2024-03-29T08:59:50Zhttp://uobrep.openrepository.com/oai/requestoai:uobrep.openrepository.com:10547/1435342020-04-23T07:28:19Zcom_10547_132192com_10547_129915col_10547_132231col_10547_129931
Amusa, Ebenezer Olukayode
a9d3a9f004423ce8ec03872186c3b8a3
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2011-09-29T08:58:36Z
2011-09-29T08:58:36Z
2010-11
Amusa, E. (2010) 'An enhanced cross-layer routing protocol for wireless mesh networks based on received signal strength'. PhD Thesis. University of Bedfordshire.
http://hdl.handle.net/10547/143534
A thesis submitted to the University of Bedfordshire, in partial fulfilment of the requirements for the degree of Doctor of Philosophy (PhD)
The research work presents an enhanced cross-layer routing solution for Wireless Mesh Networks (WMN) based on Received Signal Strength. WMN is an emerging technology with varied applications due to inherent advantages ranging from self-organisation to auto-con guration. Routing in WMN is fundamen- tally achieved by hop counts which have been proven to be de cient in terms of network performance. The realistic need to enhance the link quality metric to improve network performance has been a growing concern in recent times. The cross-Layer routing approach is one of the identi ed methods of improving routing process in Wireless technology. This work presents an RSSI-aware routing metric implemented on Optimized Link-State Routing (OLSR) for WMN. The embedded Received Signal Strength Information (RSSI) from the mesh nodes on the network is extracted, processed, transformed and incorporated into the routing process. This is to estimate efficiently the link quality for network path selections to improved network performance. The measured RSSI data is filtered by an Exponentially Weighted Moving Average (EWMA) filter. This novel routing metric method is called RSSI-aware ETT (rETT). The performance of rETT is then optimised and the results compared with the fundamental hop count metric and the link quality metric by Expected Transmission Counts (ETX). The results reveal some characteristics of RSSI samples and link conditions through the analysis of the statistical data. The divergence or variability of the samples is a function of interference and multi-path e effect on the link. The implementation results show that the routing metric with rETT is more intelligent at choosing better network paths for the packets than hop count and ETX estimations. rETT improvement on network throughput is more than double (120%) compared to hop counts and 21% improvement compared to ETX. Also, an improvement of 33% was achieved in network delay compared to hop counts and 28% better than ETX. This work brings another perspective into link-quality metric solutions for WMN by using RSSI to drive the metric of the wireless routing protocol. It was carried out on test-beds and the results obtained are more realistic and practical. The proposed metric has shown improvement in performance over the classical hop counts metric and ETX link quality metric.
en
University of Bedfordshire
University of Bedfordshire
wireless networks
wireless mesh networks
wireless network performance
An enhanced cross-layer routing protocol for wireless mesh networks based on received signal strength
Thesis or dissertation
PhD
Doctoral
The research work presents an enhanced cross-layer routing solution for Wireless
Mesh Networks (WMN) based on Received Signal Strength. WMN is an emerging technology with varied applications due to inherent advantages ranging from self-organisation to auto-con guration. Routing in WMN is fundamen-
tally achieved by hop counts which have been proven to be de cient in terms of network performance. The realistic need to enhance the link quality metric to improve network performance has been a growing concern in recent times.
The cross-Layer routing approach is one of the identi ed methods of improving routing process in Wireless technology. This work presents an RSSI-aware routing metric implemented on Optimized Link-State Routing (OLSR) for WMN. The embedded Received Signal Strength Information (RSSI) from the mesh
nodes on the network is extracted, processed, transformed and incorporated into the routing process. This is to estimate efficiently the link quality for network path selections to improved network performance. The measured RSSI data is filtered by an Exponentially Weighted Moving Average (EWMA) filter. This novel routing metric method is called RSSI-aware ETT (rETT). The performance of rETT is then optimised and the results compared with the fundamental hop count metric and the link quality metric by Expected Transmission Counts (ETX).
The results reveal some characteristics of RSSI samples and link conditions through the analysis of the statistical data. The divergence or variability of the samples is a function of interference and multi-path e effect on the link. The implementation results show that the routing metric with rETT is more intelligent at choosing better network paths for the packets than hop count
and ETX estimations. rETT improvement on network throughput is more than double (120%) compared to hop counts and 21% improvement compared to ETX. Also, an improvement of 33% was achieved in network delay compared
to hop counts and 28% better than ETX.
This work brings another perspective into link-quality metric solutions for WMN by using RSSI to drive the metric of the wireless routing protocol. It was carried out on test-beds and the results obtained are more realistic and practical. The proposed metric has shown improvement in performance over the classical hop counts metric and ETX link quality metric.
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oai:uobrep.openrepository.com:10547/2160312018-06-25T13:01:47Zcom_10547_132192col_10547_132231
Sipal, Vit
Gelabert, Javier
Allen, Ben
Stevens, Christopher
Edwards, David J.
2012-03-19T16:07:02Z
2012-03-19T16:07:02Z
2011-08
Sipal, V., Gelabert, J., Allen, B., Stevens, C., Edwards, D.J. (2011) 'Frequency-selective fading of ultrawideband wireless channels in confined environments', IET Microwaves, Antennas & Propagation 5 (11):1328
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http://hdl.handle.net/10547/216031
IET Microwaves, Antennas & Propagation
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Frequency-selective fading of ultrawideband wireless channels in confined environments
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oai:uobrep.openrepository.com:10547/2166892013-03-04T14:51:57Zcom_10547_132192col_10547_132231
Hong, Xuemin
Wang, Cheng-Xiang
Thompson, John
Allen, Ben
Malik, Wasim Q.
Ge, Xiaohu
2012-03-27T07:23:40Z
2012-03-27T07:23:40Z
2010-11
Hong, X., Wang, C., Thompson, J., Allen, B., Malik, W.Q. & Ge, X. (2010) 'On Space–Frequency Correlation of UWB MIMO Channels', IEEE Transactions on Vehicular Technology, 59 (9):4201
0018-9545
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10.1109/TVT.2010.2075947
http://hdl.handle.net/10547/216689
IEEE Transactions on Vehicular Technology. Pages: 4201-4213
Scottish Funding Council
Heriot-Watt University
Research Councils U. K. for the U.K.-China
National Natural Science Foundation of China
Grant Number:60872007
National 863 High Technology Program of China
Grant Number:2009AA01Z239
International Science and Technology Collaboration Program of China
GRant Number:0903
en
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=5575454
Archived with thanks to IEEE Transactions on Vehicular Technology
On space–frequency correlation of UWB MIMO channels
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oai:uobrep.openrepository.com:10547/2245172012-07-09T11:35:17Zcom_10547_132192col_10547_132224
Liu, Qiang
Prakash, Edmond C.
Srinivasan, Mandayam A.
2012-05-18T08:12:13Z
2012-05-18T08:12:13Z
2012-05-18
Liu, Q., Prakash, E. & Srinivasan, M. (2007) Interactive deformable geometry maps, The Visual Computer, 23 (2) pp.119-131
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oai:uobrep.openrepository.com:10547/2213762019-09-23T10:26:43Zcom_10547_132192col_10547_132224
Liu, Baoquan
Clapworthy, Gordon J.
Dong, Feng
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2012-05-01T13:39:37Z
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Liu, B., Clapworthy, G., Dong, F., Kolokotroni, E. & Stamatakos, G. (2011) 'Accelerating tumour growth simulations on many-core architectures: A case study on the use of GPGPU within VPH', International Conference on Information Visualisation (IV), 2011 15th , pp.601 - 609.
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Accelerating tumour growth aimulations on many-core architectures: a case study on the use of GPGPU within VPH
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Meetings and Proceedings
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oai:uobrep.openrepository.com:10547/2213402014-12-09T13:57:36Zcom_10547_132192col_10547_132224
Testi, Debora
Clapworthy, Gordon J.
Aylward, S.
Frangi, A.
Christie, R.
University of Bedfordshire
2012-05-01T13:13:54Z
2012-05-01T13:13:54Z
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http://hdl.handle.net/10547/221340
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BioVis
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Interactive visualization of multiscale biomedical data: an integrated approach
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IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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Zhao, X., Liu, E., Clapworthy, G. (2011) 'A Two-Stage RESTful Web Service Composition Method Based on Linear Logic' Web Services (ECOWS), Ninth IEEE European Conference on. pp.39 - 46
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Web Services (ECOWS), 2011 Ninth IEEE European Conference on. pp.39 - 46
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IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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A two-stage RESTful web Service composition method based on linear logic
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University of Bedfordshire Repository
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oai:uobrep.openrepository.com:10547/2213972019-01-08T13:51:23Zcom_10547_132192col_10547_132224
Wei, Hui
Liu, Enjie
0000-0003-4617-595X
600
Zhao, Xia
McFarlane, Nigel J.B.
Clapworthy, Gordon J.
2012-05-01T15:37:29Z
2012-05-01T15:37:29Z
2011-07
Wei, H., Liu, E., Zhao, X., McFarlane, NJB., Clapworthy, GJ. (2011) 'Web-based 3D visualisation for biomedical applications' Information Visualisation (IV), 15th International Conference on, pp. 632 - 637
10.1109/IV.2011.74
http://hdl.handle.net/10547/221397
Information Visualisation (IV), 2011 15th International Conference on
en
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6004044
Web-based 3D visualisation for biomedical applications
Article
LICENSE
license.txt
license.txt
text/plain
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2019-01-08 13:51:23.333
University of Bedfordshire Repository
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oai:uobrep.openrepository.com:10547/2213992019-09-23T10:26:16Zcom_10547_132192col_10547_132224
Zhao, Youbing
0000-0003-3677-6583
600
Clapworthy, Gordon J.
Tao, Yubo
Dong, Feng
0000-0003-4122-8012
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Wei, Hui
Wang, Tao
2012-05-01T15:39:59Z
2012-05-01T15:39:59Z
2011-07
Zhao, Y., Clapworthy, GJ, Tao, Y, Dong, F., Wei, H., Wang, T. (2011) 'CCVis: a software plugin for unified visualisation in ContraCancrum based on VTK extensions' Information Visualisation (IV), 2011 15th International Conference on, pp. 610 - 615
10.1109/IV.2011.80
http://hdl.handle.net/10547/221399
Information Visualisation (IV), 2011 15th International Conference on, pp. 610 - 615
en
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6004109
DICOM
data models
isosurfaces
rendering (computer graphics)
transfer functions
tumors
tumours
data visualisation
medical image processing
ContraCancrum
DrEye plugin
VTK extensions
multi-dimensional transfer function
multi-layered isosurface
slice views
time-varying
CCVis: a software plugin for unified visualisation in ContraCancrum based on VTK extensions
Article
LICENSE
license.txt
license.txt
text/plain
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2019-09-23 10:26:16.881
University of Bedfordshire Repository
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oai:uobrep.openrepository.com:10547/2230922018-06-28T12:56:25Zcom_10547_132192col_10547_132231
Kothris, D.
Beach, Mark
Allen, Ben
Karlsson, Peter
2012-05-10T16:14:33Z
2012-05-10T16:14:33Z
2001
Kothris, D., Beach, M., Allen, B., & Karlsson, P. (2001) 'Performance assessment of terrestrial and satellite based position location systems,' 3G Mobile Communication Technologies, 2001. Second International Conference on (Conf. Publ. No. 477), pp.211-215
10.1049/cp:20010043
http://hdl.handle.net/10547/223092
3G Mobile Communication Technologies, 2001. Second International Conference on (Conf. Publ. No. 477)
en
IEE
http://link.aip.org/link/IEECPS/v2001/iCP477/p211/s1&Agg=doi
wireless
location
mobile networks
Performance assessment of terrestrial and satellite based position location systems
Meetings and Proceedings
LICENSE
license.txt
license.txt
text/plain
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oai:uobrep.openrepository.com:10547/223092
2018-06-28 12:56:25.648
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2237322020-04-23T07:28:28Zcom_10547_132192col_10547_132224
Viceconti, Marco
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Jan, Serge Van Sint
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2008-12
Viceconti, M., Clapworthy, G., Jan, S. (2008) 'The Virtual Physiological Human — A European Initiative for in silico Human Modelling' The Journal of Physiological Sciences 58 (7): 441-446
1880-6546
1880-6562
10.2170/physiolsci.RP009908
http://hdl.handle.net/10547/223732
The Journal of Physiological Sciences
The Virtual Physiological Human (VPH) is an initiative, strongly supported by the European Commission (EC), that seeks to develop an integrated model of human physiology at multiple scales from the whole body through the organ, tissue, cell and molecular levels to the genomic level. VPH had its beginnings in 2005 with informal discussions amongst like-minded scientists, which led to the STEP project, a Coordination Action funded by the EC that began in early 2006. The STEP project greatly accelerated the progress of the VPH and proved to be a catalyst for wide-ranging discussions within Europe and for outreach activities designed to develop a broad international approach to the huge scientific and technological challenges involved in this area. This paper provides an overview of the VPH and the developments it has engendered in the rapidly expanding worldwide activities associated with the physiome. It then uses one particular project, the Living Human Project, to illustrate the type of advances that are taking place to further the aims of the VPH and similar initiatives worldwide.
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Physiological Society of Japan
http://joi.jlc.jst.go.jp/JST.JSTAGE/physiolsci/RP009908?from=CrossRef
integrative research
multiscale modelling
musculoskeletal system
physiome
virtual physiological human
The virtual physiological human — a European initiative for in silico human modelling
Article
The Virtual Physiological Human (VPH) is an initiative, strongly supported by the European Commission (EC), that seeks to develop an integrated model of human physiology at multiple scales from the whole body through the organ, tissue, cell and molecular levels to the genomic level. VPH had its beginnings in 2005 with informal discussions amongst like-minded scientists, which led to the STEP project, a Coordination Action funded by the EC that began in early 2006. The STEP project greatly accelerated the progress of the VPH and proved to be a catalyst for wide-ranging discussions within Europe and for outreach activities designed to develop a broad international approach to the huge scientific and technological challenges involved in this area. This paper provides an overview of the VPH and the developments it has engendered in the rapidly expanding worldwide activities associated with the physiome. It then uses one particular project, the Living Human Project, to illustrate the type of advances that are taking place to further the aims of the VPH and similar initiatives worldwide.
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oai:uobrep.openrepository.com:10547/2237782020-04-23T07:28:28Zcom_10547_132192col_10547_132224
John, Tng C. H.
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Prakash, Edmond C.
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Chaudhari, Narendra S.
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John, T., Prakash, E. & Chaudhari, N. (2008) 'Strategic team AI path plans: Probabilistic pathfinding', International Journal of Computer Games Technology, 2008, pp.1-6.
1687-7047
10.1155/2008/834616
http://hdl.handle.net/10547/223778
International Journal of Computer Games Technology
This paper proposes a novel method to generate strategic team AI pathfinding plans for computer games and simulations using probabilistic pathfinding. This method is inspired by genetic algorithms (Russell and Norvig, 2002), in that, a fitness function is used to test the quality of the path plans. The method generates high-quality path plans by eliminating the low-quality ones. The path plans are generated by probabilistic pathfinding, and the elimination is done by a fitness test of the path plans. This path plan generation method has the ability to generate variation or different high-quality paths, which is desired for games to increase replay values. This work is an extension of our earlier work on team AI: probabilistic pathfinding (John et al., 2006). We explore ways to combine probabilistic pathfinding and genetic algorithm to create a new method to generate strategic team AI pathfinding plans.
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Hindawi
http://www.hindawi.com/journals/ijcgt/2008/834616/
Archived with thanks to International Journal of Computer Games Technology
Strategic team AI path plans: probabilistic pathfinding
Article
This paper proposes a novel method to generate strategic team AI pathfinding plans for computer games and simulations using probabilistic pathfinding. This method is inspired by genetic algorithms (Russell and Norvig, 2002), in that, a fitness function is used to test the quality of the path plans. The method generates high-quality path plans by eliminating the low-quality ones. The path plans are generated by probabilistic pathfinding, and the elimination is done by a fitness test of the path plans. This path plan generation method has the ability to generate variation or different high-quality paths, which is desired for games to increase replay values. This work is an extension of our earlier work on team AI: probabilistic pathfinding (John et al., 2006). We explore ways to combine probabilistic pathfinding and genetic algorithm to create a new method to generate strategic team AI pathfinding plans.
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oai:uobrep.openrepository.com:10547/2237922016-01-15T14:15:14Zcom_10547_132192col_10547_132224
Zhi Zheng
Prakash, Edmond C.
Chan, T.K.Y.
2012-05-15T10:47:33Z
2012-05-15T10:47:33Z
2008-05
Zhi Z., Prakash, E.C., Chan, T.K.Y. (2008) 'Interactive View-Dependent Rendering over Networks' IEEE Transactions on Visualization and Computer Graphics 14 (3):576-589
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10.1109/TVCG.2007.70626
http://hdl.handle.net/10547/223792
IEEE Transactions on Visualization and Computer Graphics
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IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=4384480
Interactive view-dependent rendering over networks
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oai:uobrep.openrepository.com:10547/2237342018-06-29T10:21:29Zcom_10547_132192col_10547_132224
Fenner, J.W
Brook, B.
Clapworthy, Gordon J.
Coveney, Peter V.
Feipel, V.
Gregersen, H.
Hose, D.R.
Kohl, Peter
Lawford, Patricia
McCormack, K.M.
Pinney, D.
Thomas, S.R.
Van Sint Jan, S.
Waters, S.
Viceconti, Marco
2012-05-15T08:04:27Z
2012-05-15T08:04:27Z
2008-09
Fenner, J.W., Brook, B., Clapworthy, G.J., Coveney, P.V., Feipel, V., Gregersen, H., Hose, D.R., Kohl, P., Lawford, P., McCormack, K.M., Pinney, D., Thomas, S.R., Van, S.J., Waters, S. & Viceconti, M. (2008) 'The EuroPhysiome, STEP and a roadmap for the virtual physiological human', Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 366 (1878), pp.2979-2999.
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http://rsta.royalsocietypublishing.org/cgi/doi/10.1098/rsta.2008.0089
The EuroPhysiome, STEP and a roadmap for the virtual physiological human
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oai:uobrep.openrepository.com:10547/2237362020-04-23T07:28:28Zcom_10547_132192col_10547_132224
Wang, Chao
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Sun, Li-Feng
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Yang, Bo
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Liu, Yi-Ming
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Yang, Shi-Qiang
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Tsinghua University
2012-05-15T08:10:34Z
2012-05-15T08:10:34Z
2008-05
Wang, C., Sun, L., Yang, B., Liu, Y., Yang, S. (2008) 'Video Enhancement Using Adaptive Spatio-Temporal Connective Filter and Piecewise Mapping' EURASIP Journal on Advances in Signal Processing (1): 1-13.
1687-6180
10.1155/2008/165792
http://hdl.handle.net/10547/223736
EURASIP Journal on Advances in Signal Processing
This paper presents a novel video enhancement system based on an adaptive spatio-temporal connective (ASTC) noise filter and an adaptive piecewise mapping function (APMF). For ill-exposed videos or those with much noise, we first introduce a novel local image statistic to identify impulse noise pixels, and then incorporate it into the classical bilateral filter to form ASTC, aiming to reduce the mixture of the most two common types of noises - Gaussian and impulse noises in spatial and temporal directions. After noise removal, we enhance the video contrast with APMF based on the statistical information of frame segmentation results. The experiment results demonstrate that, for diverse low-quality videos corrupted by mixed noise, underexposure, overexposure, or any mixture of the above, the proposed system can automatically produce satisfactory results.
en
SpringerOpen
http://asp.eurasipjournals.com/content/2008/165792
Archived with thanks to EURASIP Journal on Advances in Signal Processing
http://creativecommons.org/licenses/by-nc-nd/4.0/
video enhancement
Video enhancement using adaptive spatio-temporal connective filter and piecewise mapping
Article
This paper presents a novel video enhancement system based on an adaptive spatio-temporal connective (ASTC) noise filter and an adaptive piecewise mapping function (APMF). For ill-exposed videos or those with much noise, we first introduce a novel local image statistic to identify impulse noise pixels, and then incorporate it into the classical bilateral filter to form ASTC, aiming to reduce the mixture of the most two common types of noises - Gaussian and impulse noises in spatial and temporal directions. After noise removal, we enhance the video contrast with APMF based on the statistical information of frame segmentation results. The experiment results demonstrate that, for diverse low-quality videos corrupted by mixed noise, underexposure, overexposure, or any mixture of the above, the proposed system can automatically produce satisfactory results.
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oai:uobrep.openrepository.com:10547/2237942019-09-23T10:31:10Zcom_10547_132192col_10547_132224
Liu, Baoquan
Clapworthy, Gordon J.
Dong, Feng
0000-0003-4122-8012
600
2012-05-15T10:57:20Z
2012-05-15T10:57:20Z
2009-07-27
Liu, B., Clapworthy, G. & Dong, F. (2009) 'Accelerating volume raycasting using proxy spheres', Computer Graphics Forum, 28 (3), pp.839-846.
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10.1111/j.1467-8659.2009.01466.x
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Computer Graphics Forum
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Blackwell Publishing
http://doi.wiley.com/10.1111/j.1467-8659.2009.01466.x
Accelerating volume raycasting using proxy spheres
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oai:uobrep.openrepository.com:10547/2237792019-09-23T10:31:28Zcom_10547_132192col_10547_132224
Tao, Yubo
Lin, Hai
Bao, Hujun
Dong, Feng
0000-0003-4122-8012
600
Clapworthy, Gordon J.
2012-05-15T10:58:01Z
2012-05-15T10:58:01Z
2009-04
Feature enhancement by volumetric unsharp masking 2009, 25 (5-7):581-588 The Visual Computer
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1432-2315
10.1007/s00371-009-0328-2
http://hdl.handle.net/10547/223779
The Visual Computer
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Feature enhancement by volumetric unsharp masking
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oai:uobrep.openrepository.com:10547/2237772019-09-23T10:30:48Zcom_10547_132192col_10547_132224
Dong, Feng
0000-0003-4122-8012
600
Clapworthy, Gordon J.
Lin, Hai
2012-05-15T10:53:42Z
2012-05-15T10:53:42Z
2009-10-08
Dong, F., Clapworthy, G.J. & Lin, H. (2009) 'Contour synthesis by least-squares construction', Electronics Letters, 45 (21), pp.1072-1074
00135194
10.1049/el.2009.1871
http://hdl.handle.net/10547/223777
Electronics Letters
en
IET
http://link.aip.org/link/ELLEAK/v45/i21/p1072/s1&Agg=doi
Contour synthesis by least-squares construction
Article
LICENSE
license.txt
license.txt
text/plain
1691
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b79a1529374c8d02a5b1f30b27d2425e
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10547/223777
oai:uobrep.openrepository.com:10547/223777
2019-09-23 10:30:48.322
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2237952019-09-23T10:30:33Zcom_10547_132192col_10547_132224
Liu, Baoquan
Clapworthy, Gordon J.
Dong, Feng
0000-0003-4122-8012
600
2012-05-15T10:58:36Z
2012-05-15T10:58:36Z
2009-12
Liu, B., Clapworthy, G. & Dong, F. (2009) 'Fast isosurface rendering on a GPU by cell rasterization', Computer Graphics Forum, 28 (8), pp.2151-2164.
0167-7055
1467-8659
10.1111/j.1467-8659.2009.01422.x
http://hdl.handle.net/10547/223795
Computer Graphics Forum
en
Blackwell Publishing
http://doi.wiley.com/10.1111/j.1467-8659.2009.01422.x
Fast isosurface rendering on a GPU by cell rasterization
Article
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/223795/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
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10547/223795
oai:uobrep.openrepository.com:10547/223795
2019-09-23 10:30:33.203
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2237802019-09-23T10:29:38Zcom_10547_132192col_10547_132224
Dong, Feng
0000-0003-4122-8012
600
Clapworthy, Gordon J.
Lin, Hai
2012-05-15T11:00:31Z
2012-05-15T11:00:31Z
2009-12-03
Dong, F., Clapworthy, G.J. & Lin, H. (2009) 'Rendering of novel views from photographs using inference in markov random field', Electronics Letters, 45 (25), pp.1312-1313.
00135194
10.1049/el.2009.1872
http://hdl.handle.net/10547/223780
Electronics Letters
en
IET
http://link.aip.org/link/ELLEAK/v45/i25/p1312/s1&Agg=doi
Rendering of novel views from photographs using inference in Markov random field
Article
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/223780/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/223780
oai:uobrep.openrepository.com:10547/223780
2019-09-23 10:29:38.1
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
Tk9OLUVYQ0xVU0lWRSBESVNUUklCVVRJT04gTElDRU5TRQoKQnkgc2lnbmluZyBhbmQgc3VibWl0dGluZyB0aGlzIGxpY2Vuc2UsIHlvdSAodGhlIGF1dGhvcihzKSBvciBjb3B5cmlnaHQKb3duZXIpIGdyYW50cyB0byB0aGUgVW5pdmVyc2l0eSBvZiBCZWRmb3Jkc2hpcmUgUmVwb3NpdG9yeSAgKFVPQlJFUCkgdGhlIG5vbi1leGNsdXNpdmUgcmlnaHQgdG8gcmVwcm9kdWNlLAp0cmFuc2xhdGUgKGFzIGRlZmluZWQgYmVsb3cpLCBhbmQvb3IgZGlzdHJpYnV0ZSB5b3VyIHN1Ym1pc3Npb24gKGluY2x1ZGluZwp0aGUgYWJzdHJhY3QpIHdvcmxkd2lkZSBpbiBwcmludCBhbmQgZWxlY3Ryb25pYyBmb3JtYXQgYW5kIGluIGFueSBtZWRpdW0sCmluY2x1ZGluZyBidXQgbm90IGxpbWl0ZWQgdG8gYXVkaW8gb3IgdmlkZW8uCgpZb3UgYWdyZWUgdGhhdCBVT0JSRVAgbWF5LCB3aXRob3V0IGNoYW5naW5nIHRoZSBjb250ZW50LCB0cmFuc2xhdGUgdGhlCnN1Ym1pc3Npb24gdG8gYW55IG1lZGl1bSBvciBmb3JtYXQgZm9yIHRoZSBwdXJwb3NlIG9mIHByZXNlcnZhdGlvbi4KCllvdSBhbHNvIGFncmVlIHRoYXQgVU9CUkVQIG1heSBrZWVwIG1vcmUgdGhhbiBvbmUgY29weSBvZiB0aGlzIHN1Ym1pc3Npb24gZm9yCnB1cnBvc2VzIG9mIHNlY3VyaXR5LCBiYWNrLXVwIGFuZCBwcmVzZXJ2YXRpb24uCgpZb3UgcmVwcmVzZW50IHRoYXQgdGhlIHN1Ym1pc3Npb24gaXMgeW91ciBvcmlnaW5hbCB3b3JrLCBhbmQgdGhhdCB5b3UgaGF2ZQp0aGUgcmlnaHQgdG8gZ3JhbnQgdGhlIHJpZ2h0cyBjb250YWluZWQgaW4gdGhpcyBsaWNlbnNlLiBZb3UgYWxzbyByZXByZXNlbnQKdGhhdCB5b3VyIHN1Ym1pc3Npb24gZG9lcyBub3QsIHRvIHRoZSBiZXN0IG9mIHlvdXIga25vd2xlZGdlLCBpbmZyaW5nZSB1cG9uCmFueW9uZSdzIGNvcHlyaWdodC4KCklmIHRoZSBzdWJtaXNzaW9uIGNvbnRhaW5zIG1hdGVyaWFsIGZvciB3aGljaCB5b3UgZG8gbm90IGhvbGQgY29weXJpZ2h0LAp5b3UgcmVwcmVzZW50IHRoYXQgeW91IGhhdmUgb2J0YWluZWQgdGhlIHVucmVzdHJpY3RlZCBwZXJtaXNzaW9uIG9mIHRoZQpjb3B5cmlnaHQgb3duZXIgdG8gZ3JhbnQgVU9CUkVQIHRoZSByaWdodHMgcmVxdWlyZWQgYnkgdGhpcyBsaWNlbnNlLCBhbmQgdGhhdApzdWNoIHRoaXJkLXBhcnR5IG93bmVkIG1hdGVyaWFsIGlzIGNsZWFybHkgaWRlbnRpZmllZCBhbmQgYWNrbm93bGVkZ2VkCndpdGhpbiB0aGUgdGV4dCBvciBjb250ZW50IG9mIHRoZSBzdWJtaXNzaW9uLgoKSUYgVEhFIFNVQk1JU1NJT04gSVMgQkFTRUQgVVBPTiBXT1JLIFRIQVQgSEFTIEJFRU4gU1BPTlNPUkVEIE9SIFNVUFBPUlRFRApCWSBBTiBBR0VOQ1kgT1IgT1JHQU5JWkFUSU9OIE9USEVSIFRIQU4gVEVTVE9SLCBZT1UgUkVQUkVTRU5UIFRIQVQgWU9VIEhBVkUKRlVMRklMTEVEIEFOWSBSSUdIVCBPRiBSRVZJRVcgT1IgT1RIRVIgT0JMSUdBVElPTlMgUkVRVUlSRUQgQlkgU1VDSApDT05UUkFDVCBPUiBBR1JFRU1FTlQuCgpVT0JSRVAgd2lsbCBjbGVhcmx5IGlkZW50aWZ5IHlvdXIgbmFtZShzKSBhcyB0aGUgYXV0aG9yKHMpIG9yIG93bmVyKHMpIG9mIHRoZQpzdWJtaXNzaW9uLCBhbmQgd2lsbCBub3QgbWFrZSBhbnkgYWx0ZXJhdGlvbiwgb3RoZXIgdGhhbiBhcyBhbGxvd2VkIGJ5IHRoaXMKbGljZW5zZSwgdG8geW91ciBzdWJtaXNzaW9uLgo=
oai:uobrep.openrepository.com:10547/2237812020-04-23T07:28:30Zcom_10547_132192col_10547_132224
Loh, Peter K. K.
68b5ed9edb7939c84f5cf37047a280ec
-1
Prakash, Edmond C.
41f8c1a53020b2ee6859b1bdc7b622ee
-1
2012-05-15T11:08:44Z
2012-05-15T11:08:44Z
2009
Loh, P.K.K. & Prakash, E.C. (2009) 'Performance simulations of moving target search algorithms', International Journal of Computer Games Technology, pp.1-6
1687-7047
1687-7055
10.1155/2009/745219
http://hdl.handle.net/10547/223781
International Journal of Computer Games Technology
The design of appropriate moving target search (MTS) algorithms for computer-generated bots poses serious challenges as they have to satisfy stringent requirements that include computation and execution efficiency. In this paper, we investigate the performance and behaviour of existing moving target search algorithms when applied to search-and-capture gaming scenarios. As part of the investigation, we also introduce a novel algorithm known as abstraction MTS. We conduct performance simulations with a game bot and moving target within randomly generated mazes of increasing sizes and reveal that abstraction MTS exhibits competitive performance even with large problem spaces.
en
Hindawi
http://www.hindawi.com/journals/ijcgt/2009/745219/
Archived with thanks to International Journal of Computer Games Technology
moving target search algorithms
computer-generated bots
Performance simulations of moving target search algorithms
Article
The design of appropriate moving target search (MTS) algorithms for computer-generated bots poses serious challenges as they have to satisfy stringent requirements that include computation and execution efficiency. In this paper, we investigate the performance and behaviour of existing moving target search algorithms when applied to search-and-capture gaming scenarios. As part of the investigation, we also introduce a novel algorithm known as abstraction MTS. We conduct performance simulations with a game bot and moving target within randomly generated mazes of increasing sizes and reveal that abstraction MTS exhibits competitive performance even with large problem spaces.
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oai:uobrep.openrepository.com:10547/2237962012-07-09T11:44:55Zcom_10547_132192col_10547_132224
Loh, Peter K. K.
Prakash, Edmond C.
2012-05-15T11:08:06Z
2012-05-15T11:08:06Z
2009-06
Loh, P. & Prakash, E. (2009) 'Novel moving target search algorithms for computer gaming', Computers in Entertainment, 7 (2), pp.1-31.
15443574
10.1145/1541895.1541907
http://hdl.handle.net/10547/223796
Computers in Entertainment
en
Association for Computing Machinery (ACM)
http://portal.acm.org/citation.cfm?doid=1541895.1541907
Archived with thanks to Computers in Entertainment
Novel moving target search algorithms for computer gaming
Article
LICENSE
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2012-07-09 11:44:55.0
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oai:uobrep.openrepository.com:10547/2241522020-04-23T07:28:30Zcom_10547_132192col_10547_132224
Zhang, Yu
816b8e2d24743ee7952cffa6715c8d32
-1
Prakash, Edmond C.
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2012-05-16T11:24:02Z
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2009
Zhang, Y. (2009) 'Face to Face: Anthropometry-Based Interactive Face Shape Modeling Using Model Priors' International Journal of Computer Games Technology 2009:1
1687-7047
1687-7055
10.1155/2009/573924
http://hdl.handle.net/10547/224152
International Journal of Computer Games Technology
This paper presents a new anthropometrics-based method for generating realistic, controllable face models. Our method establishes an intuitive and efficient interface to facilitate procedures for interactive 3D face modeling and editing. It takes 3D face scans as examples in order to exploit the variations presented in the real faces of individuals. The system automatically learns a model prior from the data-sets of example meshes of facial features using principal component analysis (PCA) and uses it to regulate the naturalness of synthesized faces. For each facial feature, we compute a set of anthropometric measurements to parameterize the example meshes into a measurement space. Using PCA coefficients as a compact shape presentation, we formulate the face modeling problem in a scattered data interpolation framework which takes the user-specified nthropometric parameters as input. Solving the interpolation problem in a reduced subspace allows us to generate a natural face shape that satisfies the user-specified constraints. At runtime, the new face shape can be generated at an interactive rate. We demonstrate the utility of our method by presenting several applications, including analysis of facial features of subjects in different race groups, facial feature transfer, and adapting face models to a particular population group.
en
Hindawi
http://www.hindawi.com/journals/ijcgt/2009/573924/
Archived with thanks to International Journal of Computer Games Technology
Face to face: anthropometry-based interactive face shape modeling using model priors
Article
This paper presents a new anthropometrics-based method for generating realistic, controllable face models. Our method establishes an intuitive and efficient interface to facilitate procedures for interactive 3D face modeling and editing. It
takes 3D face scans as examples in order to exploit the variations presented in the real faces of individuals. The system automatically learns a model prior from the data-sets of example meshes of facial features using principal component analysis (PCA) and uses it to regulate the naturalness of synthesized faces. For each facial feature, we compute a set of anthropometric measurements to parameterize the
example meshes into a measurement space. Using PCA coefficients as a compact shape presentation, we formulate the face modeling problem in a scattered data interpolation framework which takes the user-specified nthropometric parameters as input. Solving the interpolation problem in a reduced subspace allows us to generate a natural face shape that satisfies the user-specified constraints. At runtime, the new face shape can be generated at an interactive rate. We demonstrate the utility of our method by presenting several applications, including analysis of facial features of subjects in different race groups, facial feature transfer,
and adapting face models to a particular population group.
ORIGINAL
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oai:uobrep.openrepository.com:10547/2241532016-01-15T13:26:04Zcom_10547_132192col_10547_132224
Prakash, Edmond C.
Brindle, G.
Jones, K.
Zhou, S.
Chaudhari, Narendra S.
Wong, K.-W.
2012-05-16T11:24:51Z
2012-05-16T11:24:51Z
2009-12
Prakash E.C. (2009) 'Advances in Games Technology: Software, Models, and Intelligence' Simulation & Gaming 40 (6):752-801
1046-8781
10.1177/1046878109335120
http://hdl.handle.net/10547/224153
Simulation & Gaming
en
Sage Publications
http://sag.sagepub.com/cgi/doi/10.1177/1046878109335120
Advances in games technology : software, models, and intelligence
Article
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University of Bedfordshire Repository
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oai:uobrep.openrepository.com:10547/2241552012-05-21T11:53:50Zcom_10547_132192col_10547_132224
Tao, Yubo
Lin, Hai
Bao, Hujun
2012-05-16T11:26:04Z
2012-05-16T11:26:04Z
2010-02
GPU-Based Shooting and Bouncing Ray Method for Fast RCS Prediction 2010, 58 (2):494-502 IEEE Transactions on Antennas and Propagation
0018-926X
1558-2221
10.1109/TAP.2009.2037694
http://hdl.handle.net/10547/224155
IEEE Transactions on Antennas and Propagation
en
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=5345750
Archived with thanks to IEEE Transactions on Antennas and Propagation
GPU-Based Shooting and Bouncing Ray Method for Fast RCS Prediction
Article
LICENSE
license.txt
license.txt
text/plain
1691
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b79a1529374c8d02a5b1f30b27d2425e
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10547/224155
oai:uobrep.openrepository.com:10547/224155
2012-05-21 11:53:50.0
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2241052019-09-23T10:29:21Zcom_10547_132192col_10547_132224
Chen, D.
Dong, Feng
0000-0003-4122-8012
600
2012-05-16T11:35:05Z
2012-05-16T11:35:05Z
2010-01-01
Chen, D. & Dong, F. (2010) 'Shape from shading using wavelets and weighted smoothness constraints', IET Computer Vision, 4 (1), pp.1-11.
17519632
10.1049/iet-cvi.2007.0043
http://hdl.handle.net/10547/224105
IET Computer Vision
en
IET
http://link.aip.org/link/ICVEBI/v4/i1/p1/s1&Agg=doi
Shape from shading using wavelets and weighted smoothness constraints
Article
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/224105/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/224105
oai:uobrep.openrepository.com:10547/224105
2019-09-23 10:29:21.286
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2241062020-04-23T07:34:46Zcom_10547_132192col_10547_132224
Wang, Chao
58f274b8ac36cd8b566804a61188c886
-1
Sun, Li-Feng
2eefd5a1101e6e9f50f80eb3e94fa59d
-1
Chen, ZhuoYuan
0833846efb5a477efda09032736e54e4
-1
Zhang, JianWei
04c4c3593823ca5f197228f06298df66
-1
Yang, ShiQiang
2b653e311e6730af8c8025ca20887e40
-1
Tsinghua University
Hamburg University
2012-05-16T11:36:17Z
2012-05-16T11:36:17Z
2010-01
Wang, C., Sun, L-F., Chen, Z., Zhang, J., Yang, S. (2010) 'Multi-scale blind motion deblurring using local minimum' Inverse Problems 26 (1):015003
0266-5611
1361-6420
10.1088/0266-5611/26/1/015003
http://hdl.handle.net/10547/224106
Inverse Problems
Blind deconvolution, a chronic inverse problem, is the recovery of the latent sharp image from a blurred one when the blur kernel is unknown. Recent algorithms based on the MAP approach encounter failures since the global minimum of the negative MAP scores really favors the blurry image. The goal of this paper is to demonstrate that the sharp image can be obtained from the local minimum by using the MAP approach. We first propose a cross-scale constraint to make the sharp image correspond to a good local minimum. Then the cross-scale initialization, iterative likelihood update and the iterative residual deconvolution are adopted to trap the MAP approach in the desired local minimum. These techniques result in our cross-scale blind deconvolution approach which constrains the solution from coarse to fine. We test our approach on the standard dataset and many other challenging images. The experimental results suggest that our approach outperforms all existing alternatives.
en
Institute of Physics
http://stacks.iop.org/0266-5611/26/i=1/a=015003?key=crossref.70ae8b5d92ab06879ed93848482958a2
Multi-scale blind motion deblurring using local minimum
Article
Blind deconvolution, a chronic inverse problem, is the recovery of the latent sharp image from a blurred one when the blur kernel is unknown. Recent algorithms based on the MAP approach encounter failures since the global minimum of the negative MAP scores really favors the blurry image. The goal of this paper is to demonstrate that the sharp image can be obtained from the local minimum by using the MAP approach. We first propose a cross-scale constraint to make the sharp image correspond to a good local minimum. Then the cross-scale initialization, iterative likelihood update and the iterative residual deconvolution are adopted to trap the MAP approach in the desired local minimum. These techniques result in our cross-scale blind deconvolution approach which constrains the solution from coarse to fine. We test our approach on the standard dataset and many other challenging images. The experimental results suggest that our approach outperforms all existing alternatives.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/224106/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/224106
oai:uobrep.openrepository.com:10547/224106
2020-04-23 07:34:46.992
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2241572012-09-12T10:35:11Zcom_10547_132192col_10547_132224
Tao, Yubo
Lin, Hai
Bao, Hu Jun
2012-05-16T11:30:24Z
2012-05-16T11:30:24Z
2011-09
Adaptive Aperture Partition in Shooting and Bouncing Ray Method 2011, 59 (9):3347-3357 IEEE Transactions on Antennas and Propagation
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10.1109/TAP.2011.2161435
http://hdl.handle.net/10547/224157
IEEE Transactions on Antennas and Propagation
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IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=5948345
Archived with thanks to IEEE Transactions on Antennas and Propagation
acceleration
acoustic beams
apertures
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geometry
ray tracing
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geometrical optics
radar cross-sections
radiowave propagation
synthetic aperture radar
RCS prediction
THz band
adaptive aperture partition algorithm
beam triangle intersection
geometric optics
irregular beams
ray tube
shooting and bouncing ray method
virtual aperture
Adaptive aperture partition in shooting and bouncing ray method
Article
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University of Bedfordshire Repository
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oai:uobrep.openrepository.com:10547/2241022019-09-23T10:29:01Zcom_10547_132192col_10547_132224
Agrawal, Anupam
Kohout, Josef
Clapworthy, Gordon J.
McFarlane, Nigel J.B.
Dong, Feng
0000-0003-4122-8012
600
Viceconti, Marco
Taddei, Fulvia
Testi, Debora
2012-05-16T11:29:51Z
2012-05-16T11:29:51Z
2010
Agrawal, A., Kohout, J., Clapworthy, G.J., McFarlane, N.J.B., Dong, F., Viceconti, M., Taddei, F. & Testi, D. (2009) 'Enabling the interactive display of large medical volume datasets by multiresolution bricking', The Journal of Supercomputing, 51 (1), pp.3-19.
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1573-0484
10.1007/s11227-009-0289-2
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The Journal of Supercomputing
en
SpringerLink
http://www.springerlink.com/index/10.1007/s11227-009-0289-2
medical visualization
large volume data sets
out-of-core processing
multiresolution bricking
VTK
Enabling the interactive display of large medical volume datasets by multiresolution bricking
Article
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University of Bedfordshire Repository
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oai:uobrep.openrepository.com:10547/2240992019-01-08T13:52:33Zcom_10547_132192col_10547_132224
Zhao, Xia
Wang, Tao
Liu, Enjie
0000-0003-4617-595X
600
Clapworthy, Gordon J.
2012-05-16T11:26:58Z
2012-05-16T11:26:58Z
2010
Zhao, X., Wang, T., Liu, E., Clapworthy, G. (2010) 'Web Services in Distributed Information Systems' International Journal of Distributed Systems and Technologies 1 (1):1-16
1947-3532
1947-3540
10.4018/jdst.2010090801
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International Journal of Distributed Systems and Technologies
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IGI Global
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Web services in distributed information systems
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University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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Liu, Baoquan
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May, C.
Bauer, S.
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oai:uobrep.openrepository.com:10547/2241582014-11-20T11:00:41Zcom_10547_132192col_10547_132224
Liu, Baoquan
Wei, Li-Yi
Yang, Xu
Ma, Chongyang
Xu, Ying-Qing
Guo, Baining
Wu, Enhua
2012-05-16T11:30:59Z
2012-05-16T11:30:59Z
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Liu, B., Wei, L., Yang, X., Ma, C., Xu, Y., Guo, B. & Wu, E. (2011) 'Non-linear beam tracing on a GPU', Computer Graphics Forum, 30 (8), pp.2156-2169.
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Computer Graphics Forum
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Blackwell Publishing
http://doi.wiley.com/10.1111/j.1467-8659.2011.01905.x
nonlinear beam tracing
real-time rendering
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reflection
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Non-linear beam tracing on a GPU
Article
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oai:uobrep.openrepository.com:10547/2241032012-09-12T10:58:14Zcom_10547_132192col_10547_132224
Wang, Chao
Sun, Lifeng
Cui, Peng
Zhang, Jianwei
Yang, Shiqiang
2012-05-16T11:32:34Z
2012-05-16T11:32:34Z
2012
Analyzing Image Deblurring Through Three Paradigms 2012, 21 (1):115-129 IEEE Transactions on Image Processing
1057-7149
1941-0042
10.1109/TIP.2011.2159985
http://hdl.handle.net/10547/224103
IEEE Transactions on Image Processing
en
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=5893941
Archived with thanks to IEEE Transactions on Image Processing
Bayesian methods
electric shock
image edge detection
image restoration
kernel
noise
tin
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estimation theory
filtering theory
image restoration
conjunctive deblurring algorithm
deterministic filter
image deblurring
limitation latent
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Analyzing image deblurring through three paradigms
Article
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license.txt
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University of Bedfordshire Repository
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oai:uobrep.openrepository.com:10547/2241072020-04-23T08:39:55Zcom_10547_132192col_10547_132224
Murgia, Alessio
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Harwin, William
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Prakoonwit, Simant
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Brownlow, Harry
a155a673ba568522e2ad1b8afe06fe75
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2011-07
Murgia, A. et al (2011) 'Preliminary observations on the presence of sustained tendon strain and eccentric contractions of the wrist extensors during a common manual task: Implications for lateral epicondylitis' Medical Engineering & Physics 33 (6):793-797
1350-4533
10.1016/j.medengphy.2011.02.002
http://hdl.handle.net/10547/224107
Medical Engineering & Physics
en
Elsevier
http://linkinghub.elsevier.com/retrieve/pii/S1350453311000439
Preliminary observations on the presence of sustained tendon strain and eccentric contractions of the wrist extensors during a common manual task: Implications for lateral epicondylitis
Article
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2020-04-23 08:39:55.805
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2241092017-02-23T10:02:22Zcom_10547_132192col_10547_132231
Cheung, Gene
Velisavljević, Vladan
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Ortega, Antonio
2012-05-16T11:42:46Z
2012-05-16T11:42:46Z
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Cheung, G., Velisavljevic, V. & Ortega, A. (2011) 'On dependent bit allocation for multiview image coding with depth-image-based rendering', IEEE Transactions on Image Processing, 20 (11), pp.3179-3194.
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1941-0042
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http://hdl.handle.net/10547/224109
IEEE Transactions on Image Processing
en
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=5782985
On dependent bit allocation for multiview image coding with depth-image-based rendering
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Waharte, Sonia
Ishibashi, Brent
Boutaba, Raouf
Meddour, Djamal-Eddine
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Waharte, S. et al (2009) 'Design and Performance Evaluation of IAR: Interference-Aware Routing Metric for Wireless Mesh Networks' Mobile Networks and Applications 14 (5):649-660
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Mobile Networks and Applications
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Design and performance evaluation of IAR: Interference-Aware Routing metric for Wireless Mesh Networks
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Sipal, Vit
Allen, Ben
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2012-05-16T11:44:16Z
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Analysis and mitigation of antenna effects on wideband wireless channel 2010, 46 (16):1159-1160 Electronics Letters
00135194
10.1049/el.2010.1106
http://hdl.handle.net/10547/224172
Electronics Letters
en
IET
http://link.aip.org/link/ELLEAK/v46/i16/p1159/s1&Agg=doi
Archived with thanks to Electronics Letters
Analysis and mitigation of antenna effects on wideband wireless channel
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2012-05-16T11:44:52Z
2011-04-14
Exploration of Nakagami fading in ultra-wideband wireless channels 2011, 47 (8):520-521 Electronics Letters
00135194
10.1049/el.2011.0088
http://hdl.handle.net/10547/224173
Electronics Letters
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Exploration of Nakagami fading in ultra-wideband wireless channels
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oai:uobrep.openrepository.com:10547/2241012020-04-23T07:28:31Zcom_10547_132192col_10547_132231
Safdar, Ghazanfar Ali
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O'Neill, M.P.
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2009-01
Safdar, G., O'Neill, M. (2009) 'Performance Analysis of Novel Randomly Shifted Certification Authority Authentication Protocol for MANETs' EURASIP Journal on Wireless Communications and Networking (1):243956 EURASIP Journal on Wireless Communications and Networking
1687-1499
10.1155/2009/243956
http://hdl.handle.net/10547/224101
EURASIP Journal on Wireless Communications and Networking
The provision of security in mobile ad hoc networks is of paramount importance due to their wireless nature. However, when conducting research into security protocols for ad hoc networks it is necessary to consider these in the context of the overall system. For example, communicational delay associated with the underlying MAC layer needs to be taken into account. Nodes in mobile ad hoc networks must strictly obey the rules of the underlying MAC when transmitting security-related messages while still maintaining a certain quality of service. In this paper a novel authentication protocol, RASCAAL, is described and its performance is analysed by investigating both the communicational-related effects of the underlying IEEE 802.11 MAC and the computational-related effects of the cryptographic algorithms employed. To the best of the authors' knowledge, RASCAAL is the first authentication protocol which proposes the concept of dynamically formed short-lived random clusters with no prior knowledge of the cluster head. The performance analysis demonstrates that the communication losses outweigh the computation losses with respect to energy and delay. MAC-related communicational effects account for 99% of the total delay and total energy consumption incurred by the RASCAAL protocol. The results also show that a saving in communicational energy of up to 12.5% can be achieved by changing the status of the wireless nodes during the course of operation.
en
Hindawi
http://jwcn.eurasipjournals.com/content/2009/243956
Archived with thanks to EURASIP Journal on Wireless Communications and Networking
http://creativecommons.org/licenses/by-nc-nd/4.0/
mobile networks
network security
authentication
Performance analysis of novel randomly shifted Certification Authority Authentication Protocol for MANETs
Article
The provision of security in mobile ad hoc networks is of paramount importance due to their wireless nature. However, when conducting research into security protocols for ad hoc networks it is necessary to consider these in the context of the overall system. For example, communicational delay associated with the underlying MAC layer needs to be taken into account. Nodes in mobile ad hoc networks must strictly obey the rules of the underlying MAC when transmitting security-related messages while still maintaining a certain quality of service. In this paper a novel authentication protocol, RASCAAL, is described and its performance is analysed by investigating both the communicational-related effects of the underlying IEEE 802.11 MAC and the computational-related effects of the cryptographic algorithms employed. To the best of the authors' knowledge, RASCAAL is the first authentication protocol which proposes the concept of dynamically formed short-lived random clusters with no prior knowledge of the cluster head. The performance analysis demonstrates that the communication losses outweigh the computation losses with respect to energy and delay. MAC-related communicational effects account for 99% of the total delay and total energy consumption incurred by the RASCAAL protocol. The results also show that a saving in communicational energy of up to 12.5% can be achieved by changing the status of the wireless nodes during the course of operation.
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oai:uobrep.openrepository.com:10547/2241602018-08-01T18:59:12Zcom_10547_132192col_10547_132231
Ajmal, Tahmina
0000-0003-2170-5248
600
Walker, Stuart D.
2012-05-16T11:37:15Z
2012-05-16T11:37:15Z
2008-10
Ajmal, T. & Walker, S. (2008) '1.562 Gb/s phase-encrypted secure communication'. IET Optoelectronics, 2008, 2 (5):201-208
17518768
10.1049/iet-opt:20070089
http://hdl.handle.net/10547/224160
IET Optoelectronics
en
IET
http://link.aip.org/link/IOEPBG/v2/i5/p201/s1&Agg=doi
1.562 Gb/s phase-encrypted secure communication
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oai:uobrep.openrepository.com:10547/2241102017-02-23T10:02:51Zcom_10547_132192col_10547_132231
Ekmekcioglu, Erhan
Velisavljević, Vladan
0000-0001-9980-9368
600
Worrall, Stewart T.
2012-05-16T11:43:17Z
2012-05-16T11:43:17Z
2011-04
Ekmekcioglu, E., Velisavljevic, V. & Worrall, S.T. (2011) 'Content adaptive enhancement of multi-view depth maps for free viewpoint video', IEEE Journal of Selected Topics in Signal Processing, 5 (2), pp.352-361.
1932-4553
1941-0484
10.1109/JSTSP.2010.2052783
http://hdl.handle.net/10547/224110
IEEE Journal of Selected Topics in Signal Processing
en
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=5508341
Archived with thanks to IEEE Journal of Selected Topics in Signal Processing
Content adaptive enhancement of multi-view depth maps for free viewpoint video
Article
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University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2241712017-02-23T10:07:46Zcom_10547_132192col_10547_132231
Velisavljević, Vladan
0000-0001-9980-9368
600
2012-05-16T11:43:52Z
2012-05-16T11:43:52Z
2009-09
Velisavljevic, V. (2009) 'Low-Complexity Iris Coding and Recognition Based on Directionlets' IEEE Transactions on Information Forensics and Security 4 (3):410-417
1556-6013
10.1109/TIFS.2009.2024025
http://hdl.handle.net/10547/224171
IEEE Transactions on Information Forensics and Security
en
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=4982663
iris recognition
directionlets
Low-complexity iris coding and recognition based on directionlets
Article
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/224171/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/224171
oai:uobrep.openrepository.com:10547/224171
2017-02-23 10:07:46.468
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2241622020-04-23T07:28:31Zcom_10547_132192col_10547_132231
Safdar, Ghazanfar Ali
1f739524cf4ea6e5418976a09d95b50d
-1
O'Neill, M.
40fb4b93f9e655cdb5792052d994fd0e
-1
2012-05-16T11:45:42Z
2012-05-16T11:45:42Z
2012
Safdar, G.A. and O'Neill, M. (2012) 'A novel Common control channel security framework for cognitive radio networks', International Journal of Autonomous and Adaptive Communications Systems, 5 (2) pp. 125-145
1754-8632
http://hdl.handle.net/10547/224162
International Journal of Autonomous and Adaptive Communications Systems (IJAACS)
Cognitive radio technology makes use of the underutilised spectrum opportunistically without causing interference to the primary users. Cooperatively communicating cognitive radio devices use the common control channel of the cognitive radio medium access control to perform free channel announcements, channel selection and channel reservation before any actual data transmission. Common control channel security is vital in order to ensure security in the subsequent communication among the cognitive radio nodes. Additional to well-known security problems in wireless networks, cognitive radio networks introduce new classes of security threats and challenges, such as misbehaviours in spectrum sensing, licensed user emulation and attacks in the common control channel transactions. This paper presents a novel common control channel security framework (protocol) for cooperatively communicating cognitive radio networks. To the best of the authors knowledge, this is the first paper to address the security requirements of the common control channel. An implementation of the proposed security protocol is discussed illustrating how two cognitive radio nodes can authenticate each other prior to any confidential common control channel negotiations. The protocol is formally validated by GNY logic and a security analysis of the protocol illustrates that it meets the principal security requirements of authentication, confidentiality, integrity and non-repudiation.
en
Inderscience
http://www.inderscience.com/search/index.php?action=record&rec_id=46281&prevQuery=&ps=10&m=or
A novel common control channel security framework for cognitive radio networks
Article
Cognitive radio technology makes use of the underutilised spectrum opportunistically without causing interference to the primary users. Cooperatively communicating cognitive radio devices use the common control channel of the cognitive radio medium access control to perform free channel announcements, channel selection and channel reservation before any actual data transmission. Common control channel security is vital in order to ensure security in the subsequent communication among the cognitive radio nodes. Additional to well-known security problems in wireless networks, cognitive radio networks introduce new classes of security threats and challenges, such as misbehaviours in spectrum sensing, licensed user emulation and attacks in the common control channel transactions. This paper presents a novel common control channel security framework (protocol) for cooperatively communicating cognitive radio networks. To the best of the authors knowledge, this is the first paper to address the security requirements of the common control channel. An implementation of the proposed security protocol is discussed illustrating how two cognitive radio nodes can authenticate each other prior to any confidential common control channel negotiations. The protocol is formally validated by GNY logic and a security analysis of the protocol illustrates that it meets the principal security requirements of authentication, confidentiality, integrity and non-repudiation.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/224162/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/224162
oai:uobrep.openrepository.com:10547/224162
2020-04-23 07:28:31.777
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2241632016-10-20T14:00:13Zcom_10547_132192col_10547_132231
Safdar, Ghazanfar Ali
0000-0001-8969-1044
-1
Scanlon, W.G.
2012-05-16T11:46:08Z
2012-05-16T11:46:08Z
2008-03
Safdar, G., Scanlon, W. (2008) 'Performance Analysis of Improved IEEE 802.11 Infrastructure Power Saving Under Time-Correlated Channel Errors' International Journal of Wireless Information Networks 15 (1):36-42
1068-9605
1572-8129
10.1007/s10776-008-0071-z
http://hdl.handle.net/10547/224163
International Journal of Wireless Information Networks
en
SpringerLink
http://www.springerlink.com/index/10.1007/s10776-008-0071-z
Performance analysis of improved IEEE 802.11 infrastructure power saving under time-correlated channel errors
Article
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/224163/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/224163
oai:uobrep.openrepository.com:10547/224163
2016-10-20 14:00:13.0
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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2012-05-16T11:46:36Z
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Cheng, H. & Yang, S. (2011) 'Joint QoS multicast routing and channel assignment in multiradio multichannel wireless mesh networks using intelligent computational methods', Applied Soft Computing, 11 (2), pp.1953-1964.
15684946
10.1016/j.asoc.2010.06.011
http://hdl.handle.net/10547/224174
Applied Soft Computing
en
Elsevier
http://linkinghub.elsevier.com/retrieve/pii/S156849461000147X
Archived with thanks to Applied Soft Computing
Joint QoS multicast routing and channel assignment in multiradio multichannel wireless mesh networks using intelligent computational methods
Article
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University of Bedfordshire Repository
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Yang, Shengxiang
Cheng, Hui
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2012-05-16T11:47:07Z
2012-05-16T11:47:07Z
2010-01
Yang, S., Cheng, H. & Wang, F. (2010) 'Genetic Algorithms With Immigrants and Memory Schemes for Dynamic Shortest Path Routing Problems in Mobile Ad Hoc Networks', IEEE Transactions on Systems, Man, and Cybernetics, Part C (Applications and Reviews) 40 (1):52-63
1094-6977
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IEEE Transactions on Systems, Man, and Cybernetics, Part C (Applications and Reviews)
en
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=5159436
Archived with thanks to IEEE Transactions on Systems, Man, and Cybernetics, Part C (Applications and Reviews)
Genetic algorithms with immigrants and memory schemes for dynamic shortest path routing problems in mobile ad hoc networks
Article
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University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2241762020-04-23T08:39:56Zcom_10547_132192col_10547_132231
Cheng, Hui
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Cheng, H. & Yang, S. (2010) 'Genetic algorithms with immigrants schemes for dynamic multicast problems in mobile ad hoc networks', Engineering Applications of Artificial Intelligence. 23 (5):806-819
09521976
10.1016/j.engappai.2010.01.021
http://hdl.handle.net/10547/224176
Engineering Applications of Artificial Intelligence
en
Elsevier
http://linkinghub.elsevier.com/retrieve/pii/S0952197610000394
Archived with thanks to Engineering Applications of Artificial Intelligence
Genetic algorithms with immigrants schemes for dynamic multicast problems in mobile ad hoc networks
Article
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2020-04-23 08:39:56.597
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2241772012-07-06T12:22:56Zcom_10547_132192col_10547_132231
Cheng, Hui
Cao, Jiannong
Fan, Xiaopeng
2012-05-16T11:47:55Z
2012-05-16T11:47:55Z
2009-04
Cheng, H., Cao, J. & Fan, X. (2009) 'GMZRP: Geography-aided multicast zone routing protocol in mobile ad hoc networks', Mobile Networks and Applications, 14 (2), pp.165-177.
1383-469X
1572-8153
10.1007/s11036-008-0135-4
http://hdl.handle.net/10547/224177
Mobile Networks and Applications
en
SpringerLink
http://www.springerlink.com/index/10.1007/s11036-008-0135-4
Archived with thanks to Mobile Networks and Applications
GMZRP: Geography-aided Multicast Zone Routing Protocol in Mobile Ad Hoc Networks
Article
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oai:uobrep.openrepository.com:10547/2241822012-07-06T12:18:16Zcom_10547_132192col_10547_132231
Cheng, Hui
Cao, Jiannong
Chen, Hsiao-Hwa
Zhang, Hongke
2012-05-16T13:33:57Z
2012-05-16T13:33:57Z
2008
Cheng, H., Cao, J., Chen, H. & Zhang, H. (2008) 'GrLS: Group-based location service in mobile ad hoc networks', IEEE Transactions on Vehicular Technology, 57 (6), pp.3693-3707.
0018-9545
1939-9359
10.1109/TVT.2008.919614
http://hdl.handle.net/10547/224182
IEEE Transactions on Vehicular Technology
en
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=4459278
Archived with thanks to IEEE Transactions on Vehicular Technology
GrLS: Group-Based Location Service in Mobile Ad Hoc Networks
Article
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marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2245182020-04-23T08:42:53Zcom_10547_132192col_10547_132230
Şenyiğit, Ercan
622253f1ea5767c348d4d3d84bb7cc38
-1
Düğenci, Muharrem
607c80e4bc90361dcfdf77767bdf5c91
-1
Aydin, Mehmet Emin
8f4fc37dc7adabfd2df193cf441be46d
-1
Zeydan, Mithat
4acd4b7803b7ccb5652f36ab14e9024a
-1
University of Bedfordshire
2012-05-18T08:13:54Z
2012-05-18T08:13:54Z
2012-05-18
Şenyiğit, E., Düğenci, M., Aydin, M.E. & Zeydan, M. (2012) 'Heuristic-based neural networks for stochastic dynamic lot sizing problem', Applied Soft Computing, .
15684946
10.1016/j.asoc.2012.02.026
http://hdl.handle.net/10547/224518
Applied Soft Computing
This is the final version of the manuscripted accepted before production by the publisher
Multi-period single-item lot sizing problem under stochastic environment has been tackled by few researchers and remains in need of further studies. It is mathematically intractable due to its complex structure. In this paper, an optimum lot-sizing policy based on minimum total relevant cost under price and demand uncertainties was studied by using various artificial neural networks trained with heuristic-based learning approaches; genetic algorithm (GA) and bee algorithm (BA). These combined approaches have been examined with three domain-specific costing heuristics comprising revised silver meal (RSM), revised least unit cost (RLUC), cost benefit (CB). It is concluded that the feed-forward neural network (FF-NN) model trained with BA outperforms the other models with better prediction results. In addition, RLUC is found the best operating domain-specific heuristic to calculate the total cost incurring of the lot-sizing problem. Hence, the best paired heuristics to help decision makers are suggested as RLUC and FF-NN trained with BA.
en
Elsevier
http://linkinghub.elsevier.com/retrieve/pii/S1568494612001196
Archived with thanks to Applied Soft Computing
http://creativecommons.org/licenses/by-nc-nd/4.0/
G400 Computer Science
heuristic-based learning approaches
genetic algorithm
bee algorithm
revised silver meal
revised least unit cost
cost benefit
feed-forward neural network model
neural networks
Heuristic-based neural networks for stochastic dynamic lot sizing problem
Article
2020-04-23T08:42:53Z
Multi-period single-item lot sizing problem under stochastic environment has been tackled by few researchers and remains in need of further studies. It is mathematically intractable due to its complex structure. In this paper, an optimum lot-sizing policy based on minimum total relevant cost under price and demand uncertainties was studied by using various artificial neural networks trained with heuristic-based learning approaches; genetic algorithm (GA) and bee algorithm (BA). These combined approaches have been examined with three domain-specific costing heuristics comprising revised silver meal (RSM), revised least unit cost (RLUC), cost benefit (CB). It is concluded that the feed-forward neural network (FF-NN) model trained with BA outperforms the other models with better prediction results. In addition, RLUC is found the best operating domain-specific heuristic to calculate the total cost incurring of the lot-sizing problem. Hence, the best paired heuristics to help decision makers are suggested as RLUC and FF-NN trained with BA.
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oai:uobrep.openrepository.com:10547/2244712020-04-23T08:42:54Zcom_10547_132192col_10547_132230
Aydin, Mehmet Emin
8f4fc37dc7adabfd2df193cf441be46d
-1
Kwan, Raymond
988cf9954db065e19e1cfd54ef91f670
-1
Leung, Cyril
b64476ab53dd63189aaf822d56a843c2
-1
Maple, Carsten
a4dc0842fb0b0b3b6d15dd203a61bd1f
-1
Zhang, Jie
5d16d787b48b3bd6bd9a152177e36bdf
-1
University of Bedfordshire
2012-05-17T16:11:37Z
2012-05-17T16:11:37Z
2012-05-17
Aydin, M.E., Kwan, R., Leung, C., Maple, C. & Zhang, J. (2012) 'A hybrid swarm intelligence algorithm for multiuser scheduling in HSDPA', Applied Soft Computing.
15684946
10.1016/j.asoc.2011.12.007
http://hdl.handle.net/10547/224471
Applied Soft Computing
Multiuser scheduling is an important aspect in the performance optimization of a wireless network since it allows multiple users to access a shared channel efficiently by exploiting multiuser diversity. To perform efficient scheduling, channel state information (CSI) for users is required, and is obtained via their respective feedback channels. In this paper, a more realistic imperfect CSI feedback, in the form of a finite set of Channel Quality Indicator (CQI) values, is assumed as specified in the HSDPA standard. A mathematical model of the problem is developed for use in the optimization process. A hybrid heuristic approach based on particle swarm optimization and simulated annealing is used to solve the problem. Simulation results indicate that the hybrid approach outperforms individual implementations of both simulated annealing and particle swarm optimisation.
en
Elsevier
http://linkinghub.elsevier.com/retrieve/pii/S1568494611004911
Archived with thanks to Applied Soft Computing
http://creativecommons.org/licenses/by-nc-nd/4.0/
multiuser scheduling
wireless networks
channel state information
channel quality indicator
HSDPA
particle swarm optimization
simulated annealing
A hybrid swarm intelligence algorithm for multiuser scheduling in HSDPA
Article
2020-04-23T08:42:53Z
Multiuser scheduling is an important aspect in the performance optimization of a wireless network since it allows multiple users to
access a shared channel efficiently by exploiting multiuser diversity. To perform efficient scheduling, channel state information (CSI) for users is required, and is obtained via their respective feedback channels. In this paper, a more realistic imperfect CSI feedback, in the form of a finite set of Channel Quality Indicator (CQI) values, is assumed as specified in the HSDPA standard. A mathematical model of the problem is developed for use in the optimization process. A hybrid heuristic approach based on particle swarm optimization and simulated annealing is used to solve the problem. Simulation results indicate that the hybrid approach outperforms individual implementations of both simulated annealing and particle swarm optimisation.
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Aydin, Mehmet Emin
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Kwan, Raymond
988cf9954db065e19e1cfd54ef91f670
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Wu, Joyce
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University of Bedfordshire
RanPlan Ltd.
2012-05-17T15:54:19Z
2012-05-17T15:54:19Z
2012-05-17
Aydin, M.E., Kwan, R. & Wu, J. (2012) 'Multiuser scheduling on the LTE downlink with meta-heuristic approaches', Physical Communication.
18744907
10.1016/j.phycom.2012.01.004
http://hdl.handle.net/10547/224451
Physical Communication
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http://linkinghub.elsevier.com/retrieve/pii/S1874490712000134
Archived with thanks to Physical Communication
Multiuser scheduling on the LTE downlink with meta-heuristic approaches
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oai:uobrep.openrepository.com:10547/2252932020-04-23T07:28:37Zcom_10547_132192col_10547_132230
Aydin, Mehmet Emin
8f4fc37dc7adabfd2df193cf441be46d
-1
University of Bedfordshire
2012-05-22T13:43:15Z
2012-05-22T13:43:15Z
2010-07
Aydin, M. (2010) 'Coordinating metaheuristic agents with swarm intelligence'. Journal of Intelligent Manufacturing
23 (4) pp 991-999
0956-5515
1572-8145
10.1007/s10845-010-0435-y
http://hdl.handle.net/10547/225293
Journal of Intelligent Manufacturing
Coordination of multi agent systems remains as a problem since there is no prominent method suggests any universal solution. Metaheuristic agents are specific implementations of multi-agent systems, which imposes working together to solve optimisation problems using metaheuristic algorithms. An idea for coordinating metaheuristic agents borrowed from swarm intelligence is introduced in this paper. This swarm intelligence-based coordination framework has been implemented as swarms of simulated annealing agents collaborated with particle swarm optimization for multidimensional knapsack problem. A comparative performance analysis is also reported highlighting that the implementation has produced much better results than the previous works.
en
SpringerLink
http://www.springerlink.com/index/10.1007/s10845-010-0435-y
metaheuristic agents
swarm intelligence
particle swarm optimization
simulated annealing
Coordinating metaheuristic agents with swarm intelligence
Animation
Coordination of multi agent systems remains as a problem since there is no prominent method suggests any universal solution. Metaheuristic agents are specific implementations of multi-agent systems, which imposes working together to solve optimisation problems using metaheuristic algorithms. An idea for coordinating metaheuristic agents borrowed from swarm intelligence is introduced in this paper. This swarm intelligence-based coordination framework has been implemented as swarms of simulated annealing agents collaborated with particle swarm optimization for multidimensional knapsack problem. A comparative performance analysis is also reported highlighting that the implementation has produced much better results than the previous works.
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oai:uobrep.openrepository.com:10547/2252952020-04-23T07:28:39Zcom_10547_132192col_10547_132230
Kwan, Raymond
988cf9954db065e19e1cfd54ef91f670
-1
Aydin, Mehmet Emin
8f4fc37dc7adabfd2df193cf441be46d
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Leung, Cyril
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Zhang, J.
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2012-05-22T13:46:07Z
2012-05-22T13:46:07Z
2009-08
Kwan, R., Aydin, M., Leung, C. & Zhang, J. (2009) 'Multiuser scheduling in high speed downlink packet access', IET Communications, 3 (8), pp.1363-70.
17518628
10.1049/iet-com.2008.0340
http://hdl.handle.net/10547/225295
IET Communications
Multiuser scheduling is an important aspect in the performance optimisation of a wireless network as it allows multiple users to efficiently access a shared channel by exploiting multiuser diversity. For example, the 3GPP cellular standard supports multiuser scheduling in the high speed downlink packet access (HSDPA) feature. To perform efficient scheduling, channel state information (CSI) for users is required, and is obtained via their respective feedback channels. Multiuser scheduling is studied assuming the availability of perfect CSI, which would require a high bandwidth overhead. A more realistic imperfect CSI feedback in the form of a finite set of channel quality indicator values is assumed, as specified in the HSDPA standard. A global optimal approach and a simulated annealing (CSA) approach are used to solve the optimisation problem. Simulation results suggest that the performances of the two approaches are very close even though the complexity of the simulated annealing (SA) approach is much lower. The performance of a simple greedy approach is found to be significantly worse.
en
IET
http://link.aip.org/link/ICEOCW/v3/i8/p1363/s1&Agg=doi
Archived with thanks to IET Communications
Multiuser scheduling in high speed downlink packet access
Article
Multiuser scheduling is an important aspect in the performance optimisation of a wireless network as it allows multiple users to efficiently access a shared channel by exploiting multiuser diversity. For example, the 3GPP cellular standard supports multiuser scheduling in the high speed downlink packet access (HSDPA) feature. To perform efficient scheduling, channel state information (CSI) for users is required, and is obtained via their respective feedback channels. Multiuser scheduling is studied assuming the availability of perfect CSI, which would require a high bandwidth overhead. A more realistic imperfect CSI feedback in the form of a finite set of channel quality indicator values is assumed, as specified in the HSDPA standard. A global optimal approach and a simulated annealing (CSA) approach are used to solve the optimisation problem. Simulation results suggest that the performances of the two approaches are very close even though the complexity of the simulated annealing (SA) approach is much lower. The performance of a simple greedy approach is found to be significantly worse.
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University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2260122020-04-23T07:37:14Zcom_10547_132192col_10547_132224
Zhou, Zhiguang
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Tao, Yubo
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Lin, Hai
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Dong, Feng
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Clapworthy, Gordon J.
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2012-05-25T13:21:32Z
2012-05-25T13:21:32Z
2011
Zhou, Z., Tao, Y., Lin, H., Dong, F. & Clapworthy, G.J. (2011) 'Shape-enhanced maximum intensity projection', The Visual Computer, 6 (8), pp.677-686.
0178-2789
1432-2315
10.1007/s00371-011-0570-2
http://hdl.handle.net/10547/226012
The Visual Computer
Maximum intensity projection (MIP) displays the voxel with the maximum intensity along the viewing ray, and this offers simplicity in usage, as it does not require a complex transfer function, the specification of which is a highly challenging and time-consuming process in direct volume rendering (DVR). However, MIP also has its inherent limitation, the loss of spatial context and shape information. This paper proposes a novel technique, shape-enhanced maximum intensity projection (SEMIP), to resolve this limitation. Inspired by lighting in DVR to emphasize surface structures, SEMIP searches a valid gradient for the maximum intensity of each viewing ray, and applies gradient-based shading to improve shape and depth perception of structures. As SEMIP may result in the pixel values over the maximum intensity of the display device, a tone reduction technique is introduced to compress the intensity range of the rendered image while preserving the original local contrast. In addition, depth-based color cues are employed to enhance the visual perception of internal structures, and a focus and context interaction is used to highlight structures of interest. We demonstrate the effectiveness of the proposed SEMIP with several volume data sets, especially from the medical field.
en
SpringerLink
http://www.springerlink.com/index/10.1007/s00371-011-0570-2
Archived with thanks to The Visual Computer
maximum intensity projection
phong shading
tone reduction
depth-based colour
shape perception
Shape-enhanced maximum intensity projection
Article
Maximum intensity projection (MIP) displays the voxel with the maximum intensity along the viewing ray, and this offers simplicity in usage, as it does not require a complex transfer function, the specification of which is a highly challenging and time-consuming process in direct volume rendering (DVR). However, MIP also has its inherent limitation, the loss of spatial context and shape information. This paper proposes a novel technique, shape-enhanced maximum intensity projection (SEMIP), to resolve this limitation. Inspired by lighting in DVR to emphasize surface structures, SEMIP searches a valid gradient for the maximum intensity of each viewing ray, and applies gradient-based shading to improve shape and depth perception of structures. As SEMIP may result in the pixel values over the maximum intensity of the display device, a tone reduction technique is introduced to compress the intensity range of the rendered image while preserving the original local contrast. In addition, depth-based color cues are employed to enhance the visual perception of internal structures, and a focus and context interaction is used to highlight structures of interest. We demonstrate the effectiveness of the proposed SEMIP with several volume data sets, especially from the medical field.
LICENSE
license.txt
license.txt
text/plain
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University of Bedfordshire Repository
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oai:uobrep.openrepository.com:10547/2280942013-07-19T13:09:45Zcom_10547_132192col_10547_132224
McFarlane, Nigel J.B.
Clapworthy, Gordon J.
Agrawal, Anupam
Viceconti, Marco
Taddei, Fulvia
Schileo, E.
Baruffaldi, F.
2012-06-08T15:01:10Z
2012-06-08T15:01:10Z
2012-06-08
McFarlane, N.J.B., Clapworthy, G.J., Agrawal, A., Viceconti, M., Taddei, F., Schileo, E. & Baruffaldi, F. (2008) '3D Multiscale Visualisation for Medical Datasets',Proc. 5th IEEE Int. Conf on Biomedical visualization, Medivis08, pp 47-52.
10.1109/MediVis.2008.14
http://hdl.handle.net/10547/228094
en
IEEE
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=4618612
datasets
data visualisation
biomedical imaging
data visualization
medical image processing
3D multiscale visualisation for medical datasets
Meetings and Proceedings
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University of Bedfordshire Repository
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oai:uobrep.openrepository.com:10547/2280772019-09-23T10:24:12Zcom_10547_132192col_10547_132224
Lin, X.
McFarlane, Nigel J.B.
Zhao, Youbing
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Clapworthy, Gordon J.
Dong, Feng
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Redaelli, A.
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2012-06-08T15:06:19Z
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Lin, X., McFarlane, N., Zhao, Y., Clapworthy, G., Dong, F. & Redaelli, A. (2010) Visualisation of Left Ventricular Dysfunction in the Virtual Pathological Heart, In Proc. 7th IEEE Int. Conf on Biomedical visualization (Medivis10), pp 635-640, July 27-29, London, UK (doi: 10.1109/IV.2010.92)
10.1109/IV.2010.92
http://hdl.handle.net/10547/228077
en
IEEE
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=5571104
G400 Computer Science
Visualisation of left ventricular dysfunction in the virtual pathological heart
Meetings and Proceedings
LICENSE
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oai:uobrep.openrepository.com:10547/2280952019-09-23T10:23:59Zcom_10547_132192col_10547_132224
Agrawal, Anupam
Testi, Debora
Taddei, Fulvia
Viceconti, Marco
Dong, Feng
0000-0003-4122-8012
600
McFarlane, Nigel J.B.
Clapworthy, Gordon J.
Kohout, Josef
2012-06-08T15:04:31Z
2012-06-08T15:04:31Z
2012-06-08
A. Agrawal, J. Kohout, G.J. Clapworthy, N.J.B. McFarlane, F. Dong, M. Viceconti, F. Taddei and D. Testi (2008) 'Interactive Out-of-Core Exploration of Large Volume Datasets in VTK-Based Visualisation Systems', Proc. EGUK TP.CG.08 - Theory and practice of computer graphics, pp 1-8, June 9-11, Manchester, UK
http://hdl.handle.net/10547/228095
en
Eurographics
https://diglib.eg.org/EG/DL/LocalChapterEvents/TPCG/TPCG08/001-008.pdf.abstract.pdf
G400 Computer Science
data visualisation
datasets
Interactive out-of-core exploration of large volume datasets in VTK-based visualisation systems
Meetings and Proceedings
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University of Bedfordshire Repository
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oai:uobrep.openrepository.com:10547/2280782020-04-23T07:28:47Zcom_10547_132192col_10547_132231
Ajmal, Tahmina
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Bain, Robert Edward Shenton
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Gundry, Stephen
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Walsh, Philip
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Wightman, Craig Ian
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2012-06-08T15:14:38Z
2010-11-04
Ajmal, T., Bain, R., Gundry, S., Walsh, p. & Wightman, C. (2010) Apparatus for testing the quality of a fluid sample. UK Intellectual Property Office Patent no. WO/2010/125404. Available at http://patentscope.wipo.int/search/en/WO2010125404
http://hdl.handle.net/10547/228078
Patent "APPARATUS FOR TESTING THE QUALITY OF A FLUID SAMPLE". Pub No: WO/2010/125404, publication date: 04.11.2010
Apparatus for testing the quality of a fluid sample comprising a body defining an interior space including a primary chamber and one or more secondary chambers, the apparatus having a first configuration in which it is arranged to hold at least some of the fluid sample in the primary chamber and a second configuration in which it is arranged to isolate a first portion of the fluid sample within the one or more secondary chambers whilst retaining a second portion of the fluid sample in the primary chamber
en
http://patentscope.wipo.int/search/en/WO2010125404
fluid sample
quality testing
Apparatus for testing the quality of a fluid sample
Patent
Apparatus for testing the quality of a fluid sample comprising a body defining an interior space including a primary chamber and one or more secondary chambers, the apparatus having a first configuration in which it is arranged to hold at least some of the fluid sample in the primary chamber and a second configuration in which it is arranged to isolate a first portion of the fluid sample within the one or more secondary chambers whilst retaining a second portion of the fluid sample in the primary chamber
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oai:uobrep.openrepository.com:10547/2509322020-04-23T07:37:04Zcom_10547_132192col_10547_132224
Liang, Ronghua
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Wu, Yunfei
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Dong, Feng
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Clapworthy, Gordon J.
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2012-11-05T09:27:52Z
2012-06
Accumulation of local maximum intensity for feature enhanced volume rendering 2012, 28 (6-8):625-633 The Visual Computer
0178-2789
1432-2315
10.1007/s00371-012-0680-5
http://hdl.handle.net/10547/250932
The Visual Computer
Maximum Intensity Difference Accumulation (MIDA) combines the advantage of Direct Volume Rendering (DVR) and Maximum Intensity Projection (MIP). However, many features with local maximum intensity are still missing in the final rendering image. This paper presents a novel approach to focus on features with local maximum intensity within the dataset. Moving Least Squares (MLS) is used to smooth each ray profile during the raycasting in order to eliminate noise in the data and to highlight significant transition points on the profile. We then adopt a local minimum-point searching method to analyze the ray profile, and identify the transition points that mark the local maximum intensity points within the dataset. At the rendering stage, we implement a novel local intensity difference accumulation (LIDA) to accumulate the colors and opacity. Surface shading is introduced to improve the spatial cues of the features. We also employ tone-reduction to preserve the original local contrast. Our approach can highlight local features in the dataset without involving the adjustment of transfer functions. The experiments demonstrate high-quality rendering results at an interactive frame rate.
en
Springer
http://www.springerlink.com/index/10.1007/s00371-012-0680-5
Archived with thanks to The Visual Computer
Accumulation of local maximum intensity for feature enhanced volume rendering
Article
Maximum Intensity Difference Accumulation (MIDA) combines the advantage of Direct Volume Rendering (DVR) and Maximum Intensity Projection (MIP). However, many features with local maximum intensity are still missing in the final rendering image. This paper presents a novel approach to focus on features with local maximum intensity within the dataset. Moving Least Squares (MLS) is used to smooth each ray profile during the raycasting in order to eliminate noise in the data and to highlight significant transition points on the profile. We then adopt a local minimum-point searching method to analyze the ray profile, and identify the transition points that mark the local maximum intensity points within the dataset. At the rendering stage, we implement a novel local intensity difference accumulation (LIDA) to accumulate the colors and opacity. Surface shading is introduced to improve the spatial cues of the features. We also employ tone-reduction to preserve the original local contrast. Our approach can highlight local features in the dataset without involving the adjustment of transfer functions. The experiments demonstrate high-quality rendering results at an interactive frame rate.
LICENSE
license.txt
license.txt
text/plain
1691
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oai:uobrep.openrepository.com:10547/250932
2020-04-23 07:37:04.169
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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
oai:uobrep.openrepository.com:10547/2509332020-04-23T07:37:25Zcom_10547_132192col_10547_132224
Ersotelos, Nikolaos
c11554a4aeece035b838470a0598ebff
600
Dong, Feng
da560021000ca4ec284164e360494062
600
2012-11-05T09:29:51Z
2012-11-05T09:29:51Z
2008
Building highly realistic facial modeling and animation: a survey 2007, 24 (1):13-30 The Visual Computer
0178-2789
1432-2315
10.1007/s00371-007-0175-y
http://hdl.handle.net/10547/250933
The Visual Computer
This paper provides a comprehensive survey on the techniques for human facial modeling and animation. The survey is carried out from two different perspectives: facial modeling, which concerns how to produce 3D face models, and facial animation, which regards how to synthesize dynamic facial expressions. To generate an individual face model, we can either perform individualization of a generic model or combine face models from an existing face collection. With respect to facial animation, we have further categorized the techniques into simulation-based, performance-driven and shape blend-based approaches. The strength and weakness of these techniques within each category are discussed, alongside with the applications of these techniques to various exploitations. In addition, a brief historical review of the technique evolution is provided. Limitations and future trend are discussed. Conclusions are drawn at the end of the paper.
en
SpringerLink
http://www.springerlink.com/index/10.1007/s00371-007-0175-y
facial modeling
facial expression and animation
generic model adaptation
morphable modeling
pseudo muscles
performance-driven animation
blend shapes
Building highly realistic facial modeling and animation: a survey
Article
This paper provides a comprehensive survey on the techniques for human facial modeling and animation. The survey is carried out from two different perspectives: facial modeling, which concerns how to produce 3D face models, and facial animation, which regards how to synthesize dynamic facial expressions. To generate an individual face model, we can either perform individualization of a generic model or combine face models from an existing face collection. With respect to facial animation, we have further categorized the techniques into simulation-based, performance-driven and shape blend-based approaches. The strength and weakness of these techniques within each category are discussed, alongside with the applications of these techniques to various exploitations. In addition, a brief historical review of the technique evolution is provided. Limitations and future trend are discussed. Conclusions are drawn at the end of the paper.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250933/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/250933
oai:uobrep.openrepository.com:10547/250933
2020-04-23 07:37:25.417
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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
oai:uobrep.openrepository.com:10547/2509342020-04-23T07:37:04Zcom_10547_132192col_10547_132224
Liu, Baoquan
075b23a9006fedc87fc3944401d7892b
-1
Clapworthy, Gordon J.
74b484147e6f0a1d5215eb20fdd3eb87
-1
Dong, Feng
da560021000ca4ec284164e360494062
600
Prakash, Edmond C.
41f8c1a53020b2ee6859b1bdc7b622ee
-1
University of Bedfordshire
2012-11-05T09:33:44Z
2012-11-05T09:33:44Z
2012-08-10
Liu, B. et al (2012) 'Octree Rasterization: Accelerating High-Quality Out-of-Core GPU Volume Rendering' 1 IEEE Transactions on Visualization and Computer Graphics Vol PP Issue 99
1077-2626
10.1109/TVCG.2012.151
http://hdl.handle.net/10547/250934
IEEE Transactions on Visualization and Computer Graphics
We present a novel approach for GPU-based high quality volume rendering of large out-of-core volume data. By focusing on the locations and costs of ray traversal, we are able to significantly reduce the rendering time over traditional algorithms. We store a volume in an octree (of bricks); in addition, every brick is further split into regular macro-cells. Our solutions move the branch-intensive accelerating structure traversal out of the GPU raycasting loop and introduce an efficient empty-space culling method by rasterizing the proxy geometry of a view-dependent cut of the octree nodes. This rasterization pass can capture all of the bricks that the ray penetrates in a per-pixel list. Since the per-pixel list is captured in a front-to-back order, our raycasting pass needs only to cast rays inside the tighter ray segments. As a result, we achieve two levels of empty space skipping: the brick level and the macro-cell level. During evaluation and testing, this technique achieved 2 to 4 times faster rendering speed than a current state-of-the-art algorithm across a variety of data sets.
en
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6231628
http://www.computer.org/portal/web/csdl/doi/10.1109/TVCG.2012.151
octrees
graphics processing unit
rendering (computer graphics)
acceleration
interpolation
cameras
casting
ray casting
GPU techniques
volume rendering
Octree rasterization: accelerating high-quality out-of-core GPU volume rendering
Article
We present a novel approach for GPU-based high quality volume rendering of large out-of-core volume data. By focusing on the locations and costs of ray traversal, we are able to significantly reduce the rendering time over traditional algorithms. We store a volume in an octree (of bricks); in addition, every brick is further split into regular macro-cells. Our solutions move the branch-intensive accelerating structure traversal out of the GPU raycasting loop and introduce an efficient empty-space culling method by rasterizing the proxy geometry of a view-dependent cut of the octree nodes. This rasterization pass can capture all of the bricks that the ray penetrates in a per-pixel list. Since the per-pixel list is captured in a front-to-back order, our raycasting pass needs only to cast rays inside the tighter ray segments. As a result, we achieve two levels of empty space skipping: the brick level and the macro-cell level. During evaluation and testing, this technique achieved 2 to 4 times faster rendering speed than a current state-of-the-art algorithm across a variety of data sets.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250934/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/250934
oai:uobrep.openrepository.com:10547/250934
2020-04-23 07:37:04.076
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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
oai:uobrep.openrepository.com:10547/2509382020-04-23T07:29:08Zcom_10547_132192col_10547_132230
Kang, Xiaoming
79d9650889f207d1d340850f96aa46ce
-1
Yue, Yong
59d04f0f8e57359fc0492dc893f8df61
-1
Li, Dayou
6295afce2b3b8447f935ff4664ecd492
-1
Maple, Carsten
a4dc0842fb0b0b3b6d15dd203a61bd1f
-1
2012-11-05T09:43:28Z
2012-11-05T09:43:28Z
2011
Genetic algorithm based solution to dead-end problems in robot navigation 2011, 41 (3/4):177-184 International Journal of Computer Applications in Technology
0952-8091
1741-5047
10.1504/IJCAT.2011.042693
http://hdl.handle.net/10547/250938
International Journal of Computer Applications in Technology
In robot navigation, mobile robots can suffer from dead-end problems, that is, they can be stuck in areas which are surrounded by obstacles. Attempts have been reported to avoid a robot entering into such a dead-end area. However, in some applications, for example, rescue work, the dead-end areas must be explored. Therefore, it is vital for the robot to come out from the dead-end areas after exploration. This paper presents an approach which enables a robot to come out from dead-end areas. There are two main parts: a dead-end detection mechanism and a genetic algorithm (GA) based online training mechanism. When the robot realises that it is stuck in a dead-end area, it will operate the online training to produce a new best chromosome that will enable the robot to escape from the area.
en
Inderscience
http://www.inderscience.com/link.php?id=42693
Archived with thanks to International Journal of Computer Applications in Technology
dead end areas
genetic algorithms
obstacle avoidance
robot navigation
mobile robots
robotic exploration
dead-end detection
escape mechanisms
dead ends
Genetic algorithm based solution to dead-end problems in robot navigation
Article
In robot navigation, mobile robots can suffer from dead-end problems, that is, they can be stuck in areas which are surrounded by obstacles. Attempts have been reported to avoid a robot entering into such a dead-end area. However, in some applications, for example, rescue work, the dead-end areas must be explored. Therefore, it is vital for the robot to come out from the dead-end areas after exploration. This paper presents an approach which enables a robot to come out from dead-end areas. There are two main parts: a dead-end detection mechanism and a genetic algorithm (GA) based online training mechanism. When the robot realises that it is stuck in a dead-end area, it will operate the online training to produce a new best chromosome that will enable the robot to escape from the area.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250938/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/250938
oai:uobrep.openrepository.com:10547/250938
2020-04-23 07:29:08.833
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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
oai:uobrep.openrepository.com:10547/2509182020-04-23T07:37:09Zcom_10547_132192col_10547_132231
Comşa, Ioan-Sorin
ead7f032284f78a5e13ff0ea7d44f630
600
Aydin, Mehmet Emin
8f4fc37dc7adabfd2df193cf441be46d
-1
Zhang, Sijing
8869599367845ea20d13dffa6e0e2388
-1
Kuonen, Pierre
47d0617f081f4c86fc3a5b08e69a1464
-1
Wagen, Jean–Frédéric
484c49dee8b0d406dc5c300c28c5a73d
-1
2012-11-05T10:46:13Z
2012-11-05T10:46:13Z
2012
Comşa, I.S., Aydin, M.E., Zhang, S., Kuonen, P., Wagen, J.F. (2012) 'Multi Objective Resource Scheduling in LTE Networks Using Reinforcement Learning' International Journal of Distributed Systems and Technologies 3 (2):39 - 57
1947-3532
1947-3540
10.4018/jdst.2012040103
http://hdl.handle.net/10547/250918
International Journal of Distributed Systems and Technologies
The use of the intelligent packet scheduling process is absolutely necessary in order to make the radio resources usage more efficient in recent high-bit-rate demanding radio access technologies such as Long Term Evolution (LTE). Packet scheduling procedure works with various dispatching rules with different behaviors. In the literature, the scheduling disciplines are applied for the entire transmission sessions and the scheduler performance strongly depends on the exploited discipline. The method proposed in this paper aims to discuss how a straightforward schedule can be provided within the transmission time interval (TTI) sub-frame using a mixture of dispatching disciplines per TTI instead of a single rule adopted across the whole transmission.
en
IGI Global
http://services.igi-global.com/resolvedoi/resolve.aspx?doi=10.4018/jdst.2012040103
Multi objective resource scheduling in LTE networks using reinforcement learning
Article
The use of the intelligent packet scheduling process is absolutely necessary in order to make the radio resources usage more efficient in recent high-bit-rate demanding radio access technologies such as Long Term Evolution (LTE). Packet scheduling procedure works with various dispatching rules with different behaviors. In the literature, the scheduling disciplines are applied for the entire transmission sessions and the scheduler performance strongly depends on the exploited discipline. The method proposed in this paper aims to discuss how a straightforward schedule can be provided within the transmission time interval (TTI) sub-frame using a mixture of dispatching disciplines per TTI instead of a single rule adopted across the whole transmission.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250918/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/250918
oai:uobrep.openrepository.com:10547/250918
2020-04-23 07:37:09.193
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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
oai:uobrep.openrepository.com:10547/2509462020-04-23T07:29:09Zcom_10547_132192col_10547_132231
Huang, Wei
79e77a152c5bf6b8d75438d4d7bfbf33
-1
Li, Ru
4ae358828d528501b28ca7b3bf1f8a6d
-1
Maple, Carsten
a4dc0842fb0b0b3b6d15dd203a61bd1f
-1
Yang, Hong-Ji
5aaceac90b75865cceaaba0198596112
-1
Foskett, David
fae82e21c50e808b25cdbd9ed81b844a
-1
Cleaver, Vince
d5ac2a8f4322c822af8a468528095bb8
-1
2012-11-05T10:47:46Z
2012-11-05T10:47:46Z
2010
Huang, W. et al (2010) 'A novel lifecycle model for Web-based application development in small and medium enterprises' International Journal of Automation and Computing 7 (3):389-398
1476-8186
1751-8520
10.1007/s11633-010-0519-3
http://hdl.handle.net/10547/250946
International Journal of Automation and Computing
From the issue entitled "Focal Theme: Digital Manufacturing Technology
Software engineering's lifecycle models have proven to be very important for traditional software development. However, can these models be applied to the development of Web-based applications as well? In recent years, Web-based applications have become more and more complicated and a lot of efforts have been placed on introducing new technologies such as J2EE, PhP, and .NET, etc., which have been universally accepted as the development technologies for Web-based applications. However, there is no universally accepted process model for the development of Web-based applications. Moreover, shaping the process model for small medium-sized enterprises (SMEs), which have limited resources, has been relatively neglected. Based on our previous work, this paper presents an expanded lifecycle process model for the development of Web-based applications in SMEs. It consists of three sets of processes, i.e., requirement processes, development processes, and evolution processes. Particularly, the post-delivery evolution processes are important to SMEs to develop and maintain quality web applications with limited resources and time.
en
Springer
http://www.springerlink.com/index/10.1007/s11633-010-0519-3
Web
Web-based applications
lifecycle models
small to medium-sized enterprises
A novel lifecycle model for Web-based application development in small and medium enterprises
Article
Software engineering's lifecycle models have proven to be very important for traditional software development. However, can these models be applied to the development of Web-based applications as well? In recent years, Web-based applications have become more and more complicated and a lot of efforts have been placed on introducing new technologies such as J2EE, PhP, and .NET, etc., which have been universally accepted as the development technologies for Web-based applications. However, there is no universally accepted process model for the development of Web-based applications. Moreover, shaping the process model for small medium-sized enterprises (SMEs), which have limited resources, has been relatively neglected. Based on our previous work, this paper presents an expanded lifecycle process model for the development of Web-based applications in SMEs. It consists of three sets of processes, i.e., requirement processes, development processes, and evolution processes. Particularly, the post-delivery evolution processes are important to SMEs to develop and maintain quality web applications with limited resources and time.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250946/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/250946
oai:uobrep.openrepository.com:10547/250946
2020-04-23 07:29:09.339
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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
oai:uobrep.openrepository.com:10547/2509472020-04-23T07:29:15Zcom_10547_132192col_10547_132231
Viduto, Valentina
daa57fcd000111bf463ee9df7c457587
600
Maple, Carsten
a4dc0842fb0b0b3b6d15dd203a61bd1f
-1
Huang, Wei
79e77a152c5bf6b8d75438d4d7bfbf33
-1
2012-11-05T10:48:50Z
2012-11-05T10:48:50Z
2011
Viduto, V., Maple, C., Huang, W. (2011) 'Managing threats by the use of visualisation techniques' International Journal of Space-Based and Situated Computing 1 (2/3):204-212
2044-4893
2044-4907
10.1504/IJSSC.2011.040347
http://hdl.handle.net/10547/250947
International Journal of Space-Based and Situated Computing
Identification of threats in networked systems is one of the important risk management processes that should be followed in order to be aware of all risks. In general, risk assessment guidelines for threat analysis propose to use historical organisation's data, thus, novel and unheard threats often are skipped from an analysis. In this paper, we propose a novel onion skin model (OSM) which consists of visualisation techniques, such as attack graphs, often applied for qualitative and quantitative risk assessment analyses. The model can be used to facilitate in threat identification and decision-making process by focusing on attack scenarios that illustrate vulnerable nodes, threats and shortest attack paths to the attacker's goal. The model can be used as part of risk management practices to improve security awareness through different attack scenarios and manage all system risks.
en
Inderscience
http://www.inderscience.com/link.php?id=40347
onion skin model
OSM
visualisation techniques
risk management
attack graphs
attack trees
network hardening
network threats
risk assessment
network attacks
threat identification
decision making
vulnerable nodes
vulnerability
network security
attack scenarios
Managing threats by the use of visualisation techniques
Article
Identification of threats in networked systems is one of the important risk management processes that should be followed in order to be aware of all risks. In general, risk assessment guidelines for threat analysis propose to use historical organisation's data, thus, novel and unheard threats often are skipped from an analysis. In this paper, we propose a novel onion skin model (OSM) which consists of visualisation techniques, such as attack graphs, often applied for qualitative and quantitative risk assessment analyses. The model can be used to facilitate in threat identification and decision-making process by focusing on attack scenarios that illustrate vulnerable nodes, threats and shortest attack paths to the attacker's goal. The model can be used as part of risk management practices to improve security awareness through different attack scenarios and manage all system risks.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250947/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/250947
oai:uobrep.openrepository.com:10547/250947
2020-04-23 07:29:15.931
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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
oai:uobrep.openrepository.com:10547/2509502020-04-23T07:29:09Zcom_10547_132192col_10547_132230
Oussena, Samia
942cb45708d9e0d19800512b16e1dcdc
-1
French, Tim
c94a03e2298573a8e2e93bd5fc65b42a
-1
2012-11-05T11:09:28Z
2012-11-05T11:09:28Z
2011
Integrating the Semiotic into UML via Enhancing and Cross-validating Use Case with an Enriched Domain Model 2009, 1 (3):15-31 International Journal of Sociotechnology and Knowledge Development
1941-6253
1941-6261
10.4018/jskd.2009070102
http://hdl.handle.net/10547/250950
International Journal of Sociotechnology and Knowledge Development
Use case models are a representation of the way in which users of the system interact with it. The UML specification driven approach to system development enable the use case model to be continuously refined and cross-validated from a number of system viewpoints. However, little has been done for validating the model against the organisational and workgroup setting in which the system will reside. This article aims to address this gap by the use of techniques derived from organisational semiotics for validating use case models against a wider aspect of organisational culture and meaning making at the organisational, workgroup and actor level of abstraction. Such approach will enhance the system development by providing “goodness of fit” between system model and organisational values and beliefs.
en
IGI Global
http://services.igi-global.com/resolvedoi/resolve.aspx?doi=10.4018/jskd.2009070102
Archived with thanks to International Journal of Sociotechnology and Knowledge Development
Integrating the semiotic into UML via enhancing and cross-validating use case with an enriched domain model
Article
Use case models are a representation of the way in which users of the system interact with it. The UML specification driven approach to system development enable the use case model to be continuously refined and cross-validated from a number of system viewpoints. However, little has been done for validating the model against the organisational and workgroup setting in which the system will reside. This article aims to address this gap by the use of techniques derived from organisational semiotics for validating use case models against a wider aspect of organisational culture and meaning making at the organisational, workgroup and actor level of abstraction. Such approach will enhance the system development by providing “goodness of fit” between system model and organisational values and beliefs.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250950/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/250950
oai:uobrep.openrepository.com:10547/250950
2020-04-23 07:29:09.746
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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
oai:uobrep.openrepository.com:10547/2509132020-04-23T07:29:08Zcom_10547_132192col_10547_132231
Sipal, Vit
442e30837d200acb41932c12ed28488e
-1
Allen, Ben
6fb4d6686017ac286ab6176df07ed95a
-1
Edwards, David J.
bc1655ac7bd76b0a8eab94daf754c55d
-1
2012-11-05T09:36:26Z
2012-11-05T09:36:26Z
2012-07-03
Sipal, V., Allen, B., Edwards, D.J. (2012) 'Multi-tone frequency shift keying for ultrawideband wireless communications' IET Communications 6 (10):1170-1178
17518628
10.1049/iet-com.2010.1080
http://hdl.handle.net/10547/250913
IET Communications
The study explores the performance of multi-tone frequency shift keying (MT-FSK) in ultrawideband (UWB) wireless communications as an alternative to the standard modulation techniques. Its advantage is its ability to provide multiple user access even within the recently tightened regulations on UWB communications. Unlike previous works that discussed MT-FSK from the information theory perspective, here the possibility of practical implementation is explored. The basic system parameters such as tone bandwidth, number of frequencies and duty cycle are studied in terms of propagation characteristics, optimum data rate and system complexity. With optimum parameters, the authors show that a system using MT-FSK is capable of data transmission at a data rate of 250 Mbps with bit-error-rate below 10-5 whereas the receiver complexity is lower than for standard methods utilising the UWB spectrum by means of impulse radio or multi-band orthogonal frequency division multiplexing (OFDM).
en
IET
http://link.aip.org/link/ICEOCW/v6/i10/p1170/s1&Agg=doi
Multi-tone frequency shift keying for ultrawideband wireless communications
Article
The study explores the performance of multi-tone frequency shift keying (MT-FSK) in ultrawideband (UWB) wireless communications as an alternative to the standard modulation techniques. Its advantage is its ability to provide multiple user access even within the recently tightened regulations on UWB communications. Unlike previous works that discussed MT-FSK from the information theory perspective, here the possibility of practical implementation is explored. The basic system parameters such as tone bandwidth, number of frequencies and duty cycle are studied in terms of propagation characteristics, optimum data rate and system complexity. With optimum parameters, the authors show that a system using MT-FSK is capable of data transmission at a data rate of 250 Mbps with bit-error-rate below 10-5 whereas the receiver complexity is lower than for standard methods utilising the UWB spectrum by means of impulse radio or multi-band orthogonal frequency division multiplexing (OFDM).
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250913/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/250913
oai:uobrep.openrepository.com:10547/250913
2020-04-23 07:29:08.531
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
Tk9OLUVYQ0xVU0lWRSBESVNUUklCVVRJT04gTElDRU5TRQoKQnkgc2lnbmluZyBhbmQgc3VibWl0dGluZyB0aGlzIGxpY2Vuc2UsIHlvdSAodGhlIGF1dGhvcihzKSBvciBjb3B5cmlnaHQKb3duZXIpIGdyYW50cyB0byB0aGUgVW5pdmVyc2l0eSBvZiBCZWRmb3Jkc2hpcmUgUmVwb3NpdG9yeSAgKFVPQlJFUCkgdGhlIG5vbi1leGNsdXNpdmUgcmlnaHQgdG8gcmVwcm9kdWNlLAp0cmFuc2xhdGUgKGFzIGRlZmluZWQgYmVsb3cpLCBhbmQvb3IgZGlzdHJpYnV0ZSB5b3VyIHN1Ym1pc3Npb24gKGluY2x1ZGluZwp0aGUgYWJzdHJhY3QpIHdvcmxkd2lkZSBpbiBwcmludCBhbmQgZWxlY3Ryb25pYyBmb3JtYXQgYW5kIGluIGFueSBtZWRpdW0sCmluY2x1ZGluZyBidXQgbm90IGxpbWl0ZWQgdG8gYXVkaW8gb3IgdmlkZW8uCgpZb3UgYWdyZWUgdGhhdCBVT0JSRVAgbWF5LCB3aXRob3V0IGNoYW5naW5nIHRoZSBjb250ZW50LCB0cmFuc2xhdGUgdGhlCnN1Ym1pc3Npb24gdG8gYW55IG1lZGl1bSBvciBmb3JtYXQgZm9yIHRoZSBwdXJwb3NlIG9mIHByZXNlcnZhdGlvbi4KCllvdSBhbHNvIGFncmVlIHRoYXQgVU9CUkVQIG1heSBrZWVwIG1vcmUgdGhhbiBvbmUgY29weSBvZiB0aGlzIHN1Ym1pc3Npb24gZm9yCnB1cnBvc2VzIG9mIHNlY3VyaXR5LCBiYWNrLXVwIGFuZCBwcmVzZXJ2YXRpb24uCgpZb3UgcmVwcmVzZW50IHRoYXQgdGhlIHN1Ym1pc3Npb24gaXMgeW91ciBvcmlnaW5hbCB3b3JrLCBhbmQgdGhhdCB5b3UgaGF2ZQp0aGUgcmlnaHQgdG8gZ3JhbnQgdGhlIHJpZ2h0cyBjb250YWluZWQgaW4gdGhpcyBsaWNlbnNlLiBZb3UgYWxzbyByZXByZXNlbnQKdGhhdCB5b3VyIHN1Ym1pc3Npb24gZG9lcyBub3QsIHRvIHRoZSBiZXN0IG9mIHlvdXIga25vd2xlZGdlLCBpbmZyaW5nZSB1cG9uCmFueW9uZSdzIGNvcHlyaWdodC4KCklmIHRoZSBzdWJtaXNzaW9uIGNvbnRhaW5zIG1hdGVyaWFsIGZvciB3aGljaCB5b3UgZG8gbm90IGhvbGQgY29weXJpZ2h0LAp5b3UgcmVwcmVzZW50IHRoYXQgeW91IGhhdmUgb2J0YWluZWQgdGhlIHVucmVzdHJpY3RlZCBwZXJtaXNzaW9uIG9mIHRoZQpjb3B5cmlnaHQgb3duZXIgdG8gZ3JhbnQgVU9CUkVQIHRoZSByaWdodHMgcmVxdWlyZWQgYnkgdGhpcyBsaWNlbnNlLCBhbmQgdGhhdApzdWNoIHRoaXJkLXBhcnR5IG93bmVkIG1hdGVyaWFsIGlzIGNsZWFybHkgaWRlbnRpZmllZCBhbmQgYWNrbm93bGVkZ2VkCndpdGhpbiB0aGUgdGV4dCBvciBjb250ZW50IG9mIHRoZSBzdWJtaXNzaW9uLgoKSUYgVEhFIFNVQk1JU1NJT04gSVMgQkFTRUQgVVBPTiBXT1JLIFRIQVQgSEFTIEJFRU4gU1BPTlNPUkVEIE9SIFNVUFBPUlRFRApCWSBBTiBBR0VOQ1kgT1IgT1JHQU5JWkFUSU9OIE9USEVSIFRIQU4gVEVTVE9SLCBZT1UgUkVQUkVTRU5UIFRIQVQgWU9VIEhBVkUKRlVMRklMTEVEIEFOWSBSSUdIVCBPRiBSRVZJRVcgT1IgT1RIRVIgT0JMSUdBVElPTlMgUkVRVUlSRUQgQlkgU1VDSApDT05UUkFDVCBPUiBBR1JFRU1FTlQuCgpVT0JSRVAgd2lsbCBjbGVhcmx5IGlkZW50aWZ5IHlvdXIgbmFtZShzKSBhcyB0aGUgYXV0aG9yKHMpIG9yIG93bmVyKHMpIG9mIHRoZQpzdWJtaXNzaW9uLCBhbmQgd2lsbCBub3QgbWFrZSBhbnkgYWx0ZXJhdGlvbiwgb3RoZXIgdGhhbiBhcyBhbGxvd2VkIGJ5IHRoaXMKbGljZW5zZSwgdG8geW91ciBzdWJtaXNzaW9uLgo=
oai:uobrep.openrepository.com:10547/2509372020-04-23T07:29:08Zcom_10547_132192col_10547_132230
Wang, Zuobin
87c8914685854b6268383b3da4ed14cc
-1
Li, Dayou
6295afce2b3b8447f935ff4664ecd492
-1
Zhang, Jin
c215d308904dbcdb2e18999b3f4811f5
-1
Ji, Ze
b2059209ce722b41966344d9a7a687ae
-1
Qiu, Renxi
c2878327e497918ac94d317d184846f2
-1
2012-11-05T09:42:36Z
2012-11-05T09:42:36Z
2011
Wang, Z. et al (2011) 'Robotic nanoassembly: current developments and challenges' International Journal of Computer Applications in Technology 41 (3/4):185-194
0952-8091
1741-5047
10.1504/IJCAT.2011.042694
http://hdl.handle.net/10547/250937
International Journal of Computer Applications in Technology
Robotic nanoassembly is an emerging field that deals with the controlled manipulation, handling and assembly of atoms, molecules and nano objects by robots for manufacturing of nano structures, devices and systems. Nanoassembly is expected to have revolutionary applications in almost all the scientific and technological areas. This paper presents a general review of nanoassembly by robots considering its current developments and challenges. It discusses scanning probe-based 2D nanomanipulation, gripper-based 3D nanohandling, object-oriented nanoassembly and hybrid nanoassembly techniques, which are the main topics of interest in the field. The challenging issues in robotic nanoassembly are outlined together with the topics.
en
Inderscience
http://www.inderscience.com/link.php?id=42694
robotic nanoassembly
robotics
nanomanipulation
nanohandling
nanometrology
nanomanufacturing
nanotechnology
robotic assembly
object-oriented nanoassembly
Robotic nanoassembly: current developments and challenges
Article
Robotic nanoassembly is an emerging field that deals with the controlled manipulation, handling and assembly of atoms, molecules and nano objects by robots for manufacturing of nano structures, devices and systems. Nanoassembly is expected to have revolutionary applications in almost all the scientific and technological areas. This paper presents a general review of nanoassembly by robots considering its current developments and challenges. It discusses scanning probe-based 2D nanomanipulation, gripper-based 3D nanohandling, object-oriented nanoassembly and hybrid nanoassembly techniques, which are the main topics of interest in the field. The challenging issues in robotic nanoassembly are outlined together with the topics.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250937/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/250937
oai:uobrep.openrepository.com:10547/250937
2020-04-23 07:29:08.958
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2509142020-04-23T08:42:53Zcom_10547_132192col_10547_132230
Chan, K.Y.
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-1
Kwong, C.K.
cd10d2ae084aca55989e88c6030736b9
-1
Jiang, H.
5fa3e9f83297e676dcdd932089ab2fa6
-1
Aydin, Mehmet Emin
8f4fc37dc7adabfd2df193cf441be46d
-1
Fogarty, T.C.
65fa9954ca50b3ec658957b022144179
-1
2012-11-05T09:50:03Z
2012-11-05T09:50:03Z
2010-05
Chan, K.Y. et al (2010) 'A new orthogonal array based crossover, with analysis of gene interactions, for evolutionary algorithms and its application to car door design' Expert Systems with Applications 37 (5):3853-3862
0957-4174
10.1016/j.eswa.2009.11.033
http://hdl.handle.net/10547/250914
Expert Systems with Applications
Recent research shows that orthogonal array based crossovers outperform standard and existing crossovers in evolutionary algorithms in solving parametrical problems with high dimensions and multi-optima. However, those crossovers employed so far, ignore the consideration of interactions between genes. In this paper, we propose a method to improve the existing orthogonal array based crossovers by integrating information of interactions between genes. It is empirically shown that the proposed orthogonal array based crossover outperforms significantly both the existing orthogonal array based crossovers and standard crossovers on solving parametrical benchmark functions that interactions exist between variables. To further compare the proposed orthogonal array based crossover with the existing crossovers in evolutionary algorithms, a validation test based on car door design is used in which the effectiveness of the proposed orthogonal array based crossover is studied.
en
Elsevier
http://linkinghub.elsevier.com/retrieve/pii/S0957417409009750
A new orthogonal array based crossover, with analysis of gene interactions, for evolutionary algorithms and its application to car door design
Article
Recent research shows that orthogonal array based crossovers outperform standard and existing crossovers in evolutionary algorithms in solving parametrical problems with high dimensions and multi-optima. However, those crossovers employed so far, ignore the consideration of interactions between genes. In this paper, we propose a method to improve the existing orthogonal array based crossovers by integrating information of interactions between genes. It is empirically shown that the proposed orthogonal array based crossover outperforms significantly both the existing orthogonal array based crossovers and standard crossovers on solving parametrical benchmark functions that interactions exist between variables. To further compare the proposed orthogonal array based crossover with the existing crossovers in evolutionary algorithms, a validation test based on car door design is used in which the effectiveness of the proposed orthogonal array based crossover is studied.
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2020-04-23 08:42:53.68
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2509422020-04-23T07:36:21Zcom_10547_132192col_10547_132231
Zhang, Yue
7e778400de5b478534ca65f047d7d1c5
600
Zhang, Chunhui
b73692fabb654ee6409ba1e9e6111351
-1
Cosmas, John
d37b74c73c1b0b91155543dfaffe08a3
600
Kok-Keong Loo
44d0cf8bed3e1e8bd4ea9b49f8612b2b
-1
Owens, T.
cde8016a75ef8b9bdf30b926f832cc6d
-1
Di Bari, R.
4df2351095946bdfc85942bb52a25d4c
-1
Lostanlen, Y.
e4c07f2b3b8d21c9065e108811033422
-1
Bard, M.
d3dc259a0f36e027bbf917de685e04c5
-1
2012-11-05T09:55:13Z
2012-11-05T09:55:13Z
2008-09
Zhang, Y. et al (2008) 'Analysis of DVB-H Network Coverage With the Application of Transmit Diversity' IEEE Transactions on Broadcasting 54 (3):568-577
0018-9316
10.1109/TBC.2008.2002165
http://hdl.handle.net/10547/250942
IEEE Transactions on Broadcasting
This paper investigates the effects of the cyclic delay diversity (CDD) transmit diversity scheme on DVB-H networks. Transmit diversity improves reception and quality of service (QoS) in areas of poor coverage such as sparsely populated or obscured locations. The technique not only provides robust reception in mobile environments thus improving QoS, but it also reduces network costs in terms of the transmit power, number of infrastructure elements, antenna height and the frequency reuse factor over indoor and outdoor environments. In this paper, the benefit and effectiveness of CDD transmit diversity is tackled through simulation results for comparison in several scenarios of coverage in DVB-H networks. The channel model used in the simulations is based on COST207 and a basic radio planning technique is used to illustrate the main principles developed in this paper. The work reported in this paper was supported by the European Commission IST project - PLUTO (physical layer DVB transmission optimization).
en
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=4604794
Analysis of DVB-H network coverage with the application of transmit diversity
Article
This paper investigates the effects of the cyclic delay diversity (CDD) transmit diversity scheme on DVB-H networks. Transmit diversity improves reception and quality of service (QoS) in areas of poor coverage such as sparsely populated or obscured locations. The technique not only provides robust reception in mobile environments thus improving QoS, but it also reduces network costs in terms of the transmit power, number of infrastructure elements, antenna height and the frequency reuse factor over indoor and outdoor environments. In this paper, the benefit and effectiveness of CDD transmit diversity is tackled through simulation results for comparison in several scenarios of coverage in DVB-H networks. The channel model used in the simulations is based on COST207 and a basic radio planning technique is used to illustrate the main principles developed in this paper. The work reported in this paper was supported by the European Commission IST project - PLUTO (physical layer DVB transmission optimization).
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250942/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
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10547/250942
oai:uobrep.openrepository.com:10547/250942
2020-04-23 07:36:21.89
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2509432020-04-23T07:36:21Zcom_10547_132192col_10547_132231
Di Bari, R.
4df2351095946bdfc85942bb52a25d4c
-1
Bard, M.
d3dc259a0f36e027bbf917de685e04c5
-1
Zhang, Yue
7e778400de5b478534ca65f047d7d1c5
600
Nasr, K.M.
78e1af82265988c9fe2a1920ca622c51
-1
Cosmas, John
d37b74c73c1b0b91155543dfaffe08a3
600
Kok-Keong Loo
44d0cf8bed3e1e8bd4ea9b49f8612b2b
-1
Nilavalan, R.
41d0dd9b22643facb40280eb23ee8331
-1
Shirazi, H.
44a3931862620daced61699c5a67bd02
-1
Krishnapillai, K.
46235509ad1e4063050d82fe9cf0e4bc
-1
2012-11-05T09:56:41Z
2012-11-05T09:56:41Z
2008-09
Di Bari, R. et al (2008) 'Laboratory Measurement Campaign of DVB-T Signal With Transmit Delay Diversity', IEEE Transactions on Broadcasting 54 (3):532-541
0018-9316
1557-9611
10.1109/TBC.2008.2000462
http://hdl.handle.net/10547/250943
IEEE Transactions on Broadcasting
The requirements for future DVB-T/H networks demand that broadcasters design and deploy networks that provide ubiquitous reception in challenging indoors and other obstructed situations. It is essential that such networks are designed cost-effectively and with minimized environmental impact. The EC funded project PLUTO has since its start in 2006 explored the use of diversity to improve coverage in these difficult situations. The purpose of this paper is to investigate the performance of Transmit Delay Diversity (DD) with two antennas to improve the reception of DVB-T/H systems operating in different realistic propagation conditions through a series of tests using a SPIRENT SR5500 dual channel emulator. The relationship between correlation coefficient between channels, receiver velocity and diversity gain is investigated. It is shown that transmit delay diversity significantly improves the quality of reception particularly in simulated fast fading mobile broadcasting applications. This paper documents research conducted by Brunel University and Broadreach Systems.
en
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=4558055
Laboratory measurement campaign of DVB-T signal with transmit delay diversity
Article
The requirements for future DVB-T/H networks demand that broadcasters design and deploy networks that provide ubiquitous reception in challenging indoors and other obstructed situations. It is essential that such networks are designed cost-effectively and with minimized environmental impact. The EC funded project PLUTO has since its start in 2006 explored the use of diversity to improve coverage in these difficult situations. The purpose of this paper is to investigate the performance of Transmit Delay Diversity (DD) with two antennas to improve the reception of DVB-T/H systems operating in different realistic propagation conditions through a series of tests using a SPIRENT SR5500 dual channel emulator. The relationship between correlation coefficient between channels, receiver velocity and diversity gain is investigated. It is shown that transmit delay diversity significantly improves the quality of reception particularly in simulated fast fading mobile broadcasting applications. This paper documents research conducted by Brunel University and Broadreach Systems.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250943/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
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10547/250943
oai:uobrep.openrepository.com:10547/250943
2020-04-23 07:36:21.757
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2509152020-04-23T07:37:12Zcom_10547_132192col_10547_132231
Dyo, Vladimir
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Yousef, Kharsim
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Ellwood, Stephen A.
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Macdonald, David W.
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Markham, Andrew
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Trigoni, Niki
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Wohlers, Ricklef
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Mascolo, Cecilia
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Pásztor, Bence
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Scellato, Salvatore
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2012-11-05T09:59:39Z
2012-11-05T09:59:39Z
2012-09
Dyo, V. et al (2012) 'WILDSENSING' ACM Transactions on Sensor Networks 8 (4):1 (article No. 29)
1550-4859
10.1145/2240116.2240118
http://hdl.handle.net/10547/250915
ACM Transactions on Sensor Networks
The increasing adoption of wireless sensor network technology in a variety of applications, from agricultural to volcanic monitoring, has demonstrated their ability to gather data with unprecedented sensing capabilities and deliver it to a remote user. However, a key issue remains how to maintain these sensor network deployments over increasingly prolonged deployments. In this article, we present the challenges that were faced in maintaining continual operation of an automated wildlife monitoring system over a one-year period. This system analyzed the social colocation patterns of European badgers (Meles meles) residing in a dense woodland environment using a hybrid RFID-WSN approach. We describe the stages of the evolutionary development, from implementation, deployment, and testing, to various iterations of software optimization, followed by hardware enhancements, which in turn triggered the need for further software optimization. We highlight the main lessons learned: the need to factor in the maintenance costs while designing the system; to consider carefully software and hardware interactions; the importance of rapid prototyping for initial deployment (this was key to our success); and the need for continuous interaction with domain scientists which allows for unexpected optimizations.
en
Association for Computing Machinery (ACM)
http://dl.acm.org/citation.cfm?doid=2240116.2240118
WILDSENSING: design and deployment of a sustainable sensor network for wildlife monitoring
Article
The increasing adoption of wireless sensor network technology in a variety of applications, from agricultural to volcanic monitoring, has demonstrated their ability to gather data with unprecedented sensing capabilities and deliver it to a remote user. However, a key issue remains how to maintain these sensor network deployments over increasingly prolonged deployments. In this article, we present the challenges that were faced in maintaining continual operation of an automated wildlife monitoring system over a one-year period. This system analyzed the social colocation patterns of European badgers (Meles meles) residing in a dense woodland environment using a hybrid RFID-WSN approach. We describe the stages of the evolutionary development, from implementation, deployment, and testing, to various iterations of software optimization, followed by hardware enhancements, which in turn triggered the need for further software optimization. We highlight the main lessons learned: the need to factor in the maintenance costs while designing the system; to consider carefully software and hardware interactions; the importance of rapid prototyping for initial deployment (this was key to our success); and the need for continuous interaction with domain scientists which allows for unexpected optimizations.
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University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2509452020-04-23T08:42:53Zcom_10547_132192col_10547_132231
Wang, Jun
afcbb6d3477ba6a914ba956bd163c586
-1
Zhang, Sijing
8869599367845ea20d13dffa6e0e2388
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Maple, Carsten
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Zhao, Zhengxu
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2012-11-05T10:27:48Z
2012-11-05T10:27:48Z
2009-03
Guaranteeing hard real-time traffic with legitimately short deadlines with the timed token protocol 2009, 31 (3):557-565 Computer Standards & Interfaces
09205489
10.1016/j.csi.2008.03.019
http://hdl.handle.net/10547/250945
Computer Standards & Interfaces
Synchronous bandwidth, defined as the maximum time a node is allowed to send its synchronous messages while holding the token, is a sensitive parameter for deadline guarantees of synchronous messages in any timed token network. In order to offer such guarantees, synchronous bandwidth has to be allocated carefully to each individual node. This paper studies the synchronous bandwidth allocated to those synchronous message streams whose deadlines are less than twice the Target Token Rotation Time (TTRT). A new approach for allocating synchronous bandwidth to such streams, which can be used with any previously published local synchronous bandwidth allocation (SBA) for guaranteeing a general synchronous message set with its minimum deadline (D"m"i"n) no less than 2.TTRT, is proposed. The proposed scheme can be applied efficiently in practice to any general synchronous message set with D"m"i"n>TTRT. Numerical examples are presented to demonstrate the enhanced performance of this new local scheme over any of the previously published local SBA schemes.
en
Elsevier
http://linkinghub.elsevier.com/retrieve/pii/S0920548908000421
Archived with thanks to Computer Standards & Interfaces
Guaranteeing hard real-time traffic with legitimately short deadlines with the timed token protocol
Article
Synchronous bandwidth, defined as the maximum time a node is allowed to send its synchronous messages while holding the token, is a sensitive parameter for deadline guarantees of synchronous messages in any timed token network. In order to offer such guarantees, synchronous bandwidth has to be allocated carefully to each individual node. This paper studies the synchronous bandwidth allocated to those synchronous message streams whose deadlines are less than twice the Target Token Rotation Time (TTRT). A new approach for allocating synchronous bandwidth to such streams, which can be used with any previously published local synchronous bandwidth allocation (SBA) for guaranteeing a general synchronous message set with its minimum deadline (D"m"i"n) no less than 2.TTRT, is proposed. The proposed scheme can be applied efficiently in practice to any general synchronous message set with D"m"i"n>TTRT. Numerical examples are presented to demonstrate the enhanced performance of this new local scheme over any of the previously published local SBA schemes.
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2020-04-23 08:42:53.473
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2509172020-04-23T07:29:09Zcom_10547_132192col_10547_132231
Wang, Jun
afcbb6d3477ba6a914ba956bd163c586
-1
Zhang, Sijing
8869599367845ea20d13dffa6e0e2388
-1
Maple, Carsten
a4dc0842fb0b0b3b6d15dd203a61bd1f
-1
2012-11-05T10:28:29Z
2012-11-05T10:28:29Z
2011-03
Guaranteeing the timely transmission of periodic messages with arbitrary deadline constraints using the timed token media access control protocol 2011, 5 (4):519-533 IET Communications
17518628
10.1049/iet-com.2010.0006
http://hdl.handle.net/10547/250917
IET Communications
Synchronous bandwidth, defined as the maximum time a node is allowed to send its synchronous messages while holding the token, is a sensitive parameter for deadline guarantees of synchronous messages in a timed token network. In order to offer such guarantees, synchronous bandwidth has to be allocated carefully. The allocation of synchronous bandwidths to a general synchronous message set with the minimum message deadline (Dmin) larger than the target token rotation time is studied. A new approach for allocating synchronous bandwidth, which can be easily implemented in practice, is proposed. It is demonstrated, through simulations and numerical examples, that the proposed approach performs better than any of previously proposed local synchronous bandwidth allocation schemes, in terms of its ability in guaranteeing hard real-time traffic.
en
IET
http://link.aip.org/link/ICEOCW/v5/i4/p519/s1&Agg=doi
Archived with thanks to IET Communications
Guaranteeing the timely transmission of periodic messages with arbitrary deadline constraints using the timed token media access control protocol
Article
Synchronous bandwidth, defined as the maximum time a node is allowed to send its synchronous messages while holding the token, is a sensitive parameter for deadline guarantees of synchronous messages in a timed token network. In order to offer such guarantees, synchronous bandwidth has to be allocated carefully. The allocation of synchronous bandwidths to a general synchronous message set with the minimum message deadline (Dmin) larger than the target token rotation time is studied. A new approach for allocating synchronous bandwidth, which can be easily implemented in practice, is proposed. It is demonstrated, through simulations and numerical examples, that the proposed approach performs better than any of previously proposed local synchronous bandwidth allocation schemes, in terms of its ability in guaranteeing hard real-time traffic.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250917/1/license.txt
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2020-04-23 07:29:09.249
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2509482020-04-23T08:42:54Zcom_10547_132192col_10547_132230
Bessis, Nik
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Huang, Ye
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Norrington, Peter
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Brown, Antony
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Kuonen, Pierre
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Hirsbrunner, Beat
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2012-11-05T10:58:14Z
2012-11-05T10:58:14Z
2011-01
Bessis, N. et al (2011) 'Modelling of a self-led critical friend topology in inter-cooperative grid communities' Simulation Modelling Practice and Theory 19 (1):5-16
1569190X
10.1016/j.simpat.2010.06.020
http://hdl.handle.net/10547/250948
Simulation Modelling Practice and Theory
For decades, much work has been done to increase the effectiveness and efficiency of job sharing amongst available computational resources. Resources can be organized into a variety of topologies, and recent work has shown that a decentralized distributed resource topology is a crucial but complicated scenario. This is because decentralized resources are normally grouped into independent virtual organizations (VOs) and isolated from each other by VO boundaries. To convey jobs across gaps between various virtual organizations, a novel resource topology called the self-led critical friend model (CFM) is proposed in this work. The CFM deals with trust credits between resources according to their historical collaboration records. This trust reveals a feasible, realistic, and transferable correlation to facilitate the resource selection process for job delegation between arbitrarily connected physical resources. Consequently, the CFM is able to overcome the constraints caused by virtual organization boundaries.
en
Elsevier
http://linkinghub.elsevier.com/retrieve/pii/S1569190X10001413
grid
grid scheduling
critical friend model
CFM
self-led critical friend
inter-cooperative grid
Modelling of a self-led critical friend topology in inter-cooperative grid communities
Article
For decades, much work has been done to increase the effectiveness and efficiency of job sharing amongst available computational resources. Resources can be organized into a variety of topologies, and recent work has shown that a decentralized distributed resource topology is a crucial but complicated scenario. This is because decentralized resources are normally grouped into independent virtual organizations (VOs) and isolated from each other by VO boundaries.
To convey jobs across gaps between various virtual organizations, a novel resource topology called the self-led critical friend model (CFM) is proposed in this work. The CFM deals with trust credits between resources according to their historical collaboration records. This trust reveals a feasible, realistic, and transferable correlation to facilitate the resource selection process for job delegation between arbitrarily connected physical resources. Consequently, the CFM is able to overcome the constraints caused by virtual organization boundaries.
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University of Bedfordshire Repository
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oai:uobrep.openrepository.com:10547/2509202020-04-23T07:29:09Zcom_10547_132192col_10547_132230
Bessis, Nik
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Brown, Antony
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Asimakopoulou, Eleana
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2012-11-05T10:59:38Z
2012-11-05T10:59:38Z
2010
A Mathematical Analysis of a Disaster Management Data-Grid Push Service 2010, 1 (3):56-70 International Journal of Distributed Systems and Technologies
1947-3532
1947-3540
10.4018/jdst.2010070104
http://hdl.handle.net/10547/250920
International Journal of Distributed Systems and Technologies
Much work is under way within the Grid technology community on issues associated with the development of services fostering the integration and exploitation of multiple autonomous, distributed data sources through a seamless and flexible virtualized interface. These developments involve fluid and dynamic, ad hoc based interactions between dispersed service providers and consumers. However, several obstacles arise in the design and implementation of such services. In this article, the authors examine a notable obstacle, namely how to keep service consumers informed of relevant changes about data committed in multiple and distributed service provider levels, and most importantly, when these changes can affect others’ well-being. To achieve this, the authors use aggregated case scenarios to demonstrate the need for a data-Grid push service in a disaster management situation. In this regard, the article describes in detail the service architecture, as well as its mathematical analysis for keeping interested stakeholders informed automatically about relevant and critical data changes.
en
IGI Global
http://services.igi-global.com/resolvedoi/resolve.aspx?doi=10.4018/jdst.2010070104
Archived with thanks to International Journal of Distributed Systems and Technologies
A mathematical analysis of a disaster management data-grid push service
Article
Much work is under way within the Grid technology community on issues associated with the development of services fostering the integration and exploitation of multiple autonomous, distributed data sources through a seamless and flexible virtualized interface. These developments involve fluid and dynamic, ad hoc based interactions between dispersed service providers and consumers. However, several obstacles arise in the design and implementation of such services. In this article, the authors examine a notable obstacle, namely how to keep service consumers informed of relevant changes about data committed in multiple and distributed service provider levels, and most importantly, when these changes can affect others’ well-being. To achieve this, the authors use aggregated case scenarios to demonstrate the need for a data-Grid push service in a disaster management situation. In this regard, the article describes in detail the service architecture, as well as its mathematical analysis for keeping interested stakeholders informed automatically about relevant and critical data changes.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250920/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
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oai:uobrep.openrepository.com:10547/250920
2020-04-23 07:29:09.429
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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Brown, Antony
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Sant, Paul
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Bessis, Nik
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French, Tim
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Maple, Carsten
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2012-11-05T11:02:25Z
2012-11-05T11:02:25Z
2010
Modelling Self-Led Trust Value Management in Grid and Service Oriented Infrastructures 2010, 1 (4):1-18 International Journal of Systems and Service-Oriented Engineering
1947-3052
1947-3060
10.4018/jssoe.2010100101
http://hdl.handle.net/10547/250921
International Journal of Systems and Service-Oriented Engineering
Current developments in grid and service oriented technologies involve fluid and dynamic, ad hoc based interactions between delegates, which in turn, serves to challenge conventional centralised structured trust and security assurance approaches. Delegates ranging from individuals to large-scale VO (Virtual Organisations) require the establishment of trust across all parties as a prerequisite for trusted and meaningful e-collaboration. In this paper, a notable obstacle, namely how such delegates (modelled as nodes) operating within complex collaborative environment spaces can best evaluate in context to optimally and dynamically select the most trustworthy ad hoc based resource/service for e-consumption. A number of aggregated service case scenarios are herein employed in order to consider the manner in which virtual consumers and provider ad hoc based communities converge. In this paper, the authors take the view that the use of graph-theoretic modelling naturally leads to a self-led trust management decision based approach in which delegates are continuously informed of relevant up-to-date trust levels. This will lead to an increased confidence level, which trustful service delegation can occur. The key notion is of a self-led trust model that is suited to an inherently low latency, decentralised trust security paradigm.
en
IGI Global
http://services.igi-global.com/resolvedoi/resolve.aspx?doi=10.4018/jssoe.2010100101
Archived with thanks to International Journal of Systems and Service-Oriented Engineering
Modelling self-led trust value management in grid and service oriented infrastructures
Article
Current developments in grid and service oriented technologies involve fluid and dynamic, ad hoc based interactions between delegates, which in turn, serves to challenge conventional centralised structured trust and security assurance approaches. Delegates ranging from individuals to large-scale VO (Virtual Organisations) require the establishment of trust across all parties as a prerequisite for trusted and meaningful e-collaboration. In this paper, a notable obstacle, namely how such delegates (modelled as nodes) operating within complex collaborative environment spaces can best evaluate in context to optimally and dynamically select the most trustworthy ad hoc based resource/service for e-consumption. A number of aggregated service case scenarios are herein employed in order to consider the manner in which virtual consumers and provider ad hoc based communities converge. In this paper, the authors take the view that the use of graph-theoretic modelling naturally leads to a self-led trust management decision based approach in which delegates are continuously informed of relevant up-to-date trust levels. This will lead to an increased confidence level, which trustful service delegation can occur. The key notion is of a self-led trust model that is suited to an inherently low latency, decentralised trust security paradigm.
LICENSE
license.txt
license.txt
text/plain
1691
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2020-04-23 07:29:09.536
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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
oai:uobrep.openrepository.com:10547/2509492020-04-23T07:29:09Zcom_10547_132192col_10547_132230
Shenoy, Aruna
44b98252f94b871d86f50f057f924c25
-1
Anthony, Sue
2efb2bdbb4270dfa18868223697723dc
-1
Frank, Ray
33a6401709e90f30f57811c6f195ef75
-1
Davey, Neil
4868cf38dfcc525e6cbaad576e0f6442
-1
2012-11-05T11:05:27Z
2012-11-05T11:05:27Z
2011-09
Categorizing facial expressions: a comparison of computational models 2011, 20 (6):815-823 Neural Computing and Applications
0941-0643
1433-3058
10.1007/s00521-010-0446-9
http://hdl.handle.net/10547/250949
Neural Computing and Applications
Recognizing expressions is a key part of human social interaction, and processing of facial expression information is largely automatic for humans, but it is a non-trivial task for a computational system. The purpose of this work is to develop computational models capable of differentiating between a range of human facial expressions. Raw face images are examples of high-dimensional data, so here we use two dimensionality reduction techniques: principal component analysis and curvilinear component analysis. We also preprocess the images with a bank of Gabor filters, so that important features in the face images may be identified. Subsequently, the faces are classified using a support vector machine. We show that it is possible to differentiate faces with a prototypical expression from the neutral expression. Moreover, we can achieve this with data that has been massively reduced in size: in the best case the original images are reduced to just 5 components. We also investigate the effect size on face images, a concept which has not been reported previously on faces. This enables us to identify those areas of the face that are involved in the production of a facial expression.
en
Springer Link
http://www.springerlink.com/index/10.1007/s00521-010-0446-9
Archived with thanks to Neural Computing and Applications
Categorizing facial expressions: a comparison of computational models
Article
Recognizing expressions is a key part of human social interaction, and processing of facial expression information is largely automatic for humans, but it is a non-trivial task for a computational system. The purpose of this work is to develop computational models capable of differentiating between a range of human facial expressions. Raw face images are examples of high-dimensional data, so here we use two dimensionality reduction techniques: principal component analysis and curvilinear component analysis. We also preprocess the images with a bank of Gabor filters, so that important features in the face images may be identified. Subsequently, the faces are classified using a support vector machine. We show that it is possible to differentiate faces with a prototypical expression from the neutral expression. Moreover, we can achieve this with data that has been massively reduced in size: in the best case the original images are reduced to just 5 components. We also investigate the effect size on face images, a concept which has not been reported previously on faces. This enables us to identify those areas of the face that are involved in the production of a facial expression.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250949/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/250949
oai:uobrep.openrepository.com:10547/250949
2020-04-23 07:29:09.68
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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
oai:uobrep.openrepository.com:10547/2509232020-04-23T07:29:09Zcom_10547_132192col_10547_132230
French, Tim
c94a03e2298573a8e2e93bd5fc65b42a
-1
2012-11-05T11:06:47Z
2012-11-05T11:06:47Z
2009
Virtual Organisational Trust Requirements 2009, 5 (2):1-16 International Journal of Intelligent Information Technologies
1548-3657
1548-3665
10.4018/jiit.2009040101
http://hdl.handle.net/10547/250923
International Journal of Intelligent Information Technologies
It is suggested that the use of the semiotic ladder, together with a supportive trust agent can be used together to better explicate “soft” trust issues in the context of Grid services. The contribution offered here is intended to fill a gap in current understanding and modelling of such issues and to support Grid service designers to better conceptualise, hence manage trust issues. The semiotic paradigm is intended to offer an integrative viewpoint within which to explicate “soft” trust issues throughout the Grid life-cycle. A computationally lightweight trust agent is described that can be used to verify high level trust of a Virtual Organisation. The potential benefits of the approach that is advocated here include the reduction of risk and potential improvements in the quality and reliability of Grid service partnerships. For these benefits to accrue, explicit “soft” as well as “hard” trust management is essential as is an integrative viewpoint.
en
IGI Global
http://services.igi-global.com/resolvedoi/resolve.aspx?doi=10.4018/jiit.2009040101
Archived with thanks to International Journal of Intelligent Information Technologies
Virtual organisational trust requirements
Article
It is suggested that the use of the semiotic ladder, together with a supportive trust agent can be used together to better explicate “soft” trust issues in the context of Grid services. The contribution offered here is intended to fill a gap in current understanding and modelling of such issues and to support Grid service designers to better conceptualise, hence manage trust issues. The semiotic paradigm is intended to offer an integrative viewpoint within which to explicate “soft” trust issues throughout the Grid life-cycle. A computationally lightweight trust agent is described that can be used to verify high level trust of a Virtual Organisation. The potential benefits of the approach that is advocated here include the reduction of risk and potential improvements in the quality and reliability of Grid service partnerships. For these benefits to accrue, explicit “soft” as well as “hard” trust management is essential as is an integrative viewpoint.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250923/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/250923
oai:uobrep.openrepository.com:10547/250923
2020-04-23 07:29:09.604
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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
oai:uobrep.openrepository.com:10547/2509252020-04-23T07:29:09Zcom_10547_132192col_10547_132230
French, Tim
c94a03e2298573a8e2e93bd5fc65b42a
-1
Bessis, Nik
c068e2871d34808e59514ab170e6bb1d
-1
Xhafa, Fatos
fe5465dc294cc7b95907e79a5d6bbdea
-1
Maple, Carsten
a4dc0842fb0b0b3b6d15dd203a61bd1f
-1
2012-11-05T11:10:15Z
2012-11-05T11:10:15Z
2011
Towards a corporate governance trust agent scoring model for collaborative virtual organisations 2011, 2 (2):98-108 International Journal of Grid and Utility Computing
1741-847X
1741-8488
10.1504/IJGUC.2011.040597
http://hdl.handle.net/10547/250925
International Journal of Grid and Utility Computing
In this 'visionary' paper, we describe how a semiotic ladder, together with a supportive trust agent, can be used to address 'soft' trust issues in the context of collaborative Virtual Organisations (VOs). The intention is to offer all parties better support for trust (as reputation) management, including the reduction of risk and improved reliability of VO e-services. The semiotic ladder is intended to support the VO e-service life cycle through the articulation of e-trust at various levels of system abstraction, including trust as a measurable confidence level. A novel trust agent is used to provide the consumer with an objective measure of the trustworthiness of the e-service at runtime, just prior to its actual consumption. Specifically, VO consumer confidence level is informed via a set of Corporate Governance (CG) scores, which are used as a trust proxy for the 'real' owner of the VO.
en
Inderscience
http://www.inderscience.com/link.php?id=40597
Archived with thanks to International Journal of Grid and Utility Computing
semiotic ladders
lightweight trust agents
scoring systems
corporate governance scores
past performance historys
grid services
cloud computing
collaborative virtual organisations
context-aware trust
grid computing
collaboration
trust management
reputation management
e-services
electronic services
online services
trustworthiness
Towards a corporate governance trust agent scoring model for collaborative virtual organisations
Article
In this 'visionary' paper, we describe how a semiotic ladder, together with a supportive trust agent, can be used to address 'soft' trust issues in the context of collaborative Virtual Organisations (VOs). The intention is to offer all parties better support for trust (as reputation) management, including the reduction of risk and improved reliability of VO e-services. The semiotic ladder is intended to support the VO e-service life cycle through the articulation of e-trust at various levels of system abstraction, including trust as a measurable confidence level. A novel trust agent is used to provide the consumer with an objective measure of the trustworthiness of the e-service at runtime, just prior to its actual consumption. Specifically, VO consumer confidence level is informed via a set of Corporate Governance (CG) scores, which are used as a trust proxy for the 'real' owner of the VO.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250925/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/250925
oai:uobrep.openrepository.com:10547/250925
2020-04-23 07:29:09.82
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2509242020-04-23T07:29:09Zcom_10547_132192col_10547_132230
French, Tim
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-1
Bessis, Nik
c068e2871d34808e59514ab170e6bb1d
-1
Maple, Carsten
a4dc0842fb0b0b3b6d15dd203a61bd1f
-1
Asimakopoulou, Eleana
06c90b1547abb919ae8d54ab4a72ac69
-1
2012-11-05T11:07:55Z
2012-11-05T11:07:55Z
2012
Trust Issues on Crowd-Sourcing Methods for Urban Environmental Monitoring 2012, 3 (1):35-48 International Journal of Distributed Systems and Technologies
1947-3532
1947-3540
10.4018/jdst.2012010103
http://hdl.handle.net/10547/250924
International Journal of Distributed Systems and Technologies
This paper explores trust related issues arising from the use of a crowd-sourcing method. Crowd-sourcing is a relatively new method that utilises modern technologies to gather, analyse and visualise specific “on-the-fly” data. The data is typically acquired through the employment of mobile technology, with each device running a bespoke application that captures the desired information. The resulting “crowd sourced” data is readily available and the corresponding maps produced can in turn, be used to support strategic planning and to facilitate overall, more informed decision-making. The purpose is to provide insights into this novel approach to data collection, aggregation and subsequent visualisation. Specifically, the focus centres upon issues of trust and security that are inherent not merely to the use of crowd sourced data capture itself, but also crucially, to the stewardship and usage of the resultant data sets within e-government settings. A novel community centric usage scenario is presented that seeks to show how issues of trust pervade the technology. Hence, both rewards and risks are revealed and we go on to outline a preliminary approach intended to support a trusted and reputable “crowdy” data architecture.
en
IGI Global
http://services.igi-global.com/resolvedoi/resolve.aspx?doi=10.4018/jdst.2012010103
Archived with thanks to International Journal of Distributed Systems and Technologies
Trust issues on crowd-sourcing methods for urban environmental monitoring
Article
This paper explores trust related issues arising from the use of a crowd-sourcing method. Crowd-sourcing is a relatively new method that utilises modern technologies to gather, analyse and visualise specific “on-the-fly” data. The data is typically acquired through the employment of mobile technology, with each device running a bespoke application that captures the desired information. The resulting “crowd sourced” data is readily available and the corresponding maps produced can in turn, be used to support strategic planning and to facilitate overall, more informed decision-making. The purpose is to provide insights into this novel approach to data collection, aggregation and subsequent visualisation. Specifically, the focus centres upon issues of trust and security that are inherent not merely to the use of crowd sourced data capture itself, but also crucially, to the stewardship and usage of the resultant data sets within e-government settings. A novel community centric usage scenario is presented that seeks to show how issues of trust pervade the technology. Hence, both rewards and risks are revealed and we go on to outline a preliminary approach intended to support a trusted and reputable “crowdy” data architecture.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250924/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
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10547/250924
oai:uobrep.openrepository.com:10547/250924
2020-04-23 07:29:09.897
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2509222020-04-23T07:29:09Zcom_10547_132192col_10547_132230
Sotiriadis, Stelios
3ca64c0b285d4587eea31a2a378a7279
-1
Bessis, Nik
c068e2871d34808e59514ab170e6bb1d
-1
Huang, Ye
93ee81c3e583818622fdf975079d822e
-1
Sant, Paul
4d523c3c21b077623d507fc78147194c
-1
Maple, Carsten
a4dc0842fb0b0b3b6d15dd203a61bd1f
-1
2012-11-05T11:03:57Z
2012-11-05T11:03:57Z
2011
Defining Minimum Requirements of Inter-Collaborated Nodes by Measuring the Weight of Node Interactions 2011, 2 (3):19-37 International Journal of Distributed Systems and Technologies
1947-3532
1947-3540
10.4018/jdst.2011070102
http://hdl.handle.net/10547/250922
International Journal of Distributed Systems and Technologies
This paper focuses on defining the minimum requirements to support the inter-cooperation between various scales, dynamically evolved Virtual Organizations (VOs). This proposed method is able to assign a weighted value to each pair-wise path that each member (node) can select in order to locate neighbouring nodes according to their preferences. The method also takes into account the communication overhead between each node interaction. The weight of each path is to be measured by the analysis of prerequisites in order to achieve a mutually agreed interaction between nodes. Requirements are defined as the least parameters or conditions that a node needs to achieve in order to determine its accessibility factor. The motivation behind this work is the vision of the Critical Friends Community model, which is a suitable topology for interoperable grid environments. The topology suggests that capturing inter-cooperated nodes interactions that can be publicly available could lead to knowledge of neighbouring VO members which, in turn, could be used for facilitating a more effective resource discovery and selection decision.
en
IGI Global
http://services.igi-global.com/resolvedoi/resolve.aspx?doi=10.4018/jdst.2011070102
Archived with thanks to International Journal of Distributed Systems and Technologies
Defining minimum requirements of inter-collaborated nodes by measuring the weight of node interactions
Article
This paper focuses on defining the minimum requirements to support the inter-cooperation between various scales, dynamically evolved Virtual Organizations (VOs). This proposed method is able to assign a weighted value to each pair-wise path that each member (node) can select in order to locate neighbouring nodes according to their preferences. The method also takes into account the communication overhead between each node interaction. The weight of each path is to be measured by the analysis of prerequisites in order to achieve a mutually agreed interaction between nodes. Requirements are defined as the least parameters or conditions that a node needs to achieve in order to determine its accessibility factor. The motivation behind this work is the vision of the Critical Friends Community model, which is a suitable topology for interoperable grid environments. The topology suggests that capturing inter-cooperated nodes interactions that can be publicly available could lead to knowledge of neighbouring VO members which, in turn, could be used for facilitating a more effective resource discovery and selection decision.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250922/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
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10547/250922
oai:uobrep.openrepository.com:10547/250922
2020-04-23 07:29:09.97
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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
oai:uobrep.openrepository.com:10547/2509162020-04-23T08:42:53Zcom_10547_132192col_10547_132230
Liu, Jiamin
c62076efe90e24d0267529aab534b41f
-1
Yue, Yong
59d04f0f8e57359fc0492dc893f8df61
-1
Dong, Zongran
b061ba2999ece90382e597cc77565e54
-1
Maple, Carsten
a4dc0842fb0b0b3b6d15dd203a61bd1f
-1
Keech, Malcolm
3e06bf1a506f8ba63715e193be0dc516
-1
2012-11-05T10:26:39Z
2012-11-05T10:26:39Z
2011-04
Liu, J. et al (2011) 'A novel hybrid tabu search approach to container loading' Computers & Operations Research 38 (4):797-807
0305-0548
10.1016/j.cor.2010.09.002
http://hdl.handle.net/10547/250916
Computers & Operations Research
The container loading problem, which is significant for a number of industrial sectors, aims to obtain a high space utilisation in the container while satisfying practical constraints. This paper presents a novel hybrid tabu search approach to the container loading problem. A loading heuristic is devised to incorporate heuristic strategies with a handling method for remaining spaces to generate optimal loading arrangements of boxes with stability considered. The tabu search technique, which covers the encoding, evaluation criteria and configuration of neighbourhood and candidate solutions, is used to improve the performance of the loading heuristic. Experimental results with benchmark data show that the hybrid approach provides a better space utilisation than the published approaches under the condition of all loaded boxes with one hundred percent support from below. Moreover, it is shown that the hybrid tabu search can solve problems with the constraints of weight limit and weight distribution with real world data.
en
Elsevier
http://linkinghub.elsevier.com/retrieve/pii/S0305054810001917
heuristic
tabu search
container loading
stability
weight distribution
A novel hybrid tabu search approach to container loading
Article
The container loading problem, which is significant for a number of industrial sectors, aims to obtain a high space utilisation in the container while satisfying practical constraints. This paper presents a novel hybrid tabu search approach to the container loading problem. A loading heuristic is devised to incorporate heuristic strategies with a handling method for remaining spaces to generate optimal loading arrangements of boxes with stability considered. The tabu search technique, which covers the encoding, evaluation criteria and configuration of neighbourhood and candidate solutions, is used to improve the performance of the loading heuristic. Experimental results with benchmark data show that the hybrid approach provides a better space utilisation than the published approaches under the condition of all loaded boxes with one hundred percent support from below. Moreover, it is shown that the hybrid tabu search can solve problems with the constraints of weight limit and weight distribution with real world data.
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LICENSE
license.txt
license.txt
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1691
https://uobrep.openrepository.com/bitstream/10547/250916/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
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10547/250916
oai:uobrep.openrepository.com:10547/250916
2020-04-23 08:42:53.875
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2509442020-04-23T07:35:29Zcom_10547_132192col_10547_132230
Ahmed, Ejaz
47d8c67840c5cbb7b3a0b93bb5b00955
600
Bessis, Nik
c068e2871d34808e59514ab170e6bb1d
-1
Norrington, Peter
7ce7c420f60a4d00ea0ea558e4950764
600
Yue, Yong
59d04f0f8e57359fc0492dc893f8df61
-1
2012-11-05T10:07:28Z
2012-11-05T10:07:28Z
2010
Managing Inconsistencies in Data Grid Environments 2010, 2 (4):51-65 International Journal of Grid and High Performance Computing
1938-0259
1938-0267
10.4018/jghpc.2010100105
http://hdl.handle.net/10547/250944
International Journal of Grid and High Performance Computing
Much work has been done in the area of data access and integration using various data mapping, matching, and loading techniques. One of the main concerns when integrating data from heterogeneous data sources is data redundancy. The concern is mainly due to the different business contexts and purposes from which the data systems were originally built. A common process for accessing data from integrated databases involves the use of each data source’s own catalogue or metadata schema. In this article, the authors take the view that there is a greater chance of data inconsistencies, such as data redundancies when integrating them within a grid environment as compared to traditional distributed paradigms. The importance of improving the data search and matching process is briefly discussed, and a partial service oriented generic strategy is adopted to consolidate distinct catalogue schemas of federated databases to access information seamlessly. To this end, a proposed matching strategy between structure objects and data values across federated databases in a grid environment is presented.
en
IGI Global
http://services.igi-global.com/resolvedoi/resolve.aspx?doi=10.4018/jghpc.2010100105
Archived with thanks to International Journal of Grid and High Performance Computing
Managing inconsistencies in data grid environments
Article
Much work has been done in the area of data access and integration using various data mapping, matching, and loading techniques. One of the main concerns when integrating data from heterogeneous data sources is data redundancy. The concern is mainly due to the different business contexts and purposes from which the data systems were originally built. A common process for accessing data from integrated databases involves the use of each data source’s own catalogue or metadata schema. In this article, the authors take the view that there is a greater chance of data inconsistencies, such as data redundancies when integrating them within a grid environment as compared to traditional distributed paradigms. The importance of improving the data search and matching process is briefly discussed, and a partial service oriented generic strategy is adopted to consolidate distinct catalogue schemas of federated databases to access information seamlessly. To this end, a proposed matching strategy between structure objects and data values across federated databases in a grid environment is presented.
LICENSE
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license.txt
text/plain
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2020-04-23 07:35:29.654
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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
oai:uobrep.openrepository.com:10547/2509412020-04-23T07:29:10Zcom_10547_132192col_10547_132230
Yong Yue
37c8663fc765fde42d94f0c6a49f43aa
-1
Clark, J.W.
d1b54a3a086769129b1a7e27e4d1d53e
-1
Khoury, D.S.
53e5c29b795a95e99044998976763856
-1
2012-11-05T09:49:10Z
2012-11-05T09:49:10Z
2008-10
Speckle Tracking in Intracardiac Echocardiography for the Assessment of Myocardial Deformation 2009, 56 (2):416-425 IEEE Transactions on Biomedical Engineering
0018-9294
1558-2531
10.1109/TBME.2008.2006036
http://hdl.handle.net/10547/250941
IEEE Transactions on Biomedical Engineering
Intracardiac echocardiography has proven to be useful for online anatomical imaging during catheterization. Our objective was to develop a speckle tracking method for myocardial motion estimation from intracardiac echocardiographic image sequences in order to provide a mean for regional functional imaging. Our approach was to solve two problems in motion estimation from two-dimensional intracardiac echocardiographic image sequences: non-rigid myocardial deformation and speckle decorrelation. To achieve robust noise resistance, we employed maximum likelihood estimation while fully exploiting ultrasound speckle statistics, and treated the maximization of motion probability as the minimization of an energy function. Non-rigid myocardial deformation was estimated by optimizing this energy function within a framework of parametric elastic registration. Evaluation of the method was carried out using a computer model that synthesized echocardiographic image sequences, and subsequently an animal model that provided continuous intracardiac echocardiographic images as well as reference measurements using sonomicrometry crystals. In conclusion, accurate estimation of regional myocardial deformation from intracardiac echocardiography by novel speckle tracking is feasible. This approach may have important clinical implications for multimodal imaging during catheterization.
en
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=4639510
Archived with thanks to IEEE Transactions on Biomedical Engineering
cardiac imaging
myocardial strain
elastic registration
non-rigid deformation
sonomicrometry
Speckle tracking in intracardiac echocardiography for the assessment of myocardial deformation
Article
Intracardiac echocardiography has proven to be useful for online anatomical imaging during catheterization. Our objective was to develop a speckle tracking method for myocardial motion estimation from intracardiac echocardiographic image sequences in order to provide a mean for regional functional imaging. Our approach was to solve two problems in motion estimation from two-dimensional intracardiac echocardiographic image sequences: non-rigid myocardial deformation and speckle decorrelation. To achieve robust noise resistance, we employed maximum likelihood estimation while fully exploiting ultrasound speckle statistics, and treated the maximization of motion probability as the minimization of an energy function. Non-rigid myocardial deformation was estimated by optimizing this energy function within a framework of parametric elastic registration. Evaluation of the method was carried out using a computer model that synthesized echocardiographic image sequences, and subsequently an animal model that provided continuous intracardiac echocardiographic images as well as reference measurements using sonomicrometry crystals. In conclusion, accurate estimation of regional myocardial deformation from intracardiac echocardiography by novel speckle tracking is feasible. This approach may have important clinical implications for multimodal imaging during catheterization.
LICENSE
license.txt
license.txt
text/plain
1691
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2020-04-23 07:29:10.116
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2509402020-04-23T08:42:53Zcom_10547_132192col_10547_132230
Viduto, Valentina
daa57fcd000111bf463ee9df7c457587
600
Maple, Carsten
a4dc0842fb0b0b3b6d15dd203a61bd1f
-1
Huang, Wei
79e77a152c5bf6b8d75438d4d7bfbf33
-1
López-Peréz, David
79fab873b7620f1856c6eb21ab2df768
-1
2012-11-05T09:47:02Z
2012-11-05T09:47:02Z
2012-06
Viduto, V. et al (2012) 'A novel risk assessment and optimisation model for a multi-objective network security countermeasure selection problem' Decision Support Systems 53 (3):599-610
0167-9236
10.1016/j.dss.2012.04.001
http://hdl.handle.net/10547/250940
Decision Support Systems
Budget cuts and the high demand in strengthening the security of computer systems and services constitute a challenge. Poor system knowledge and inappropriate selection of security measures may lead to unexpected financial and data losses. This paper proposes a novel Risk Assessment and Optimisation Model (RAOM) to solve a security countermeasure selection problem, where variables such as financial cost and risk may affect a final decision. A Multi-Objective Tabu Search (MOTS) algorithm has been developed to construct an efficient frontier of non-dominated solutions, which can satisfy organisational security needs in a cost-effective manner.
en
els
http://linkinghub.elsevier.com/retrieve/pii/S0167923612000978
financial decision support
risk assessment
countermeasure selection problem
multi-objective optimisation
tabu search
A novel risk assessment and optimisation model for a multi-objective network security countermeasure selection problem
Article
Budget cuts and the high demand in strengthening the security of computer systems and services constitute a challenge. Poor system knowledge and inappropriate selection of security measures may lead to unexpected financial and data losses. This paper proposes a novel Risk Assessment and Optimisation Model (RAOM) to solve a security countermeasure selection problem, where variables such as financial cost and risk may affect a final decision. A Multi-Objective Tabu Search (MOTS) algorithm has been developed to construct an efficient frontier of non-dominated solutions, which can satisfy organisational security needs in a cost-effective manner.
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LICENSE
license.txt
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b79a1529374c8d02a5b1f30b27d2425e
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2020-04-23 08:42:53.952
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2509192020-04-23T07:36:54Zcom_10547_132192col_10547_132230
Conrad, Marc
c6d205a5c2149a7b0af55b805ff88a6c
600
Neale, Jo
89a50b624b661d12f6befd44b75341e3
600
Charles, Alec
cf9e6d97ca7829dfe8d96224d7b45fdf
-1
University of Bedfordshire
2012-11-05T10:57:08Z
2012-11-05T10:57:08Z
2010-12
Conrad, M.,Neale, J.,Charles, A. (2010) 'This Is My Body: The Uses and Effects of the Avatar in the Virtual World', International Journal for Infonomics, 3 (4): 360-368
1742-4712
http://hdl.handle.net/10547/250919
International Journal for Infonomics
The study focuses on the relationship users of virtual worlds, such as Second Life, may or may not develop toward the avatar they use. A questionnaire was developed to collect both qualitative and quantitative data from students engaged in a university assignment that required them to use an avatar in Second Life. The findings are contextualized and discussed: The distinctions between software, hardware and self are blurred.
en
Infonomics Society
http://www.infonomics-society.org/IJI/Contents%20Page%20Volume%203%20Issue%204.pdf
This is my body: the uses and effects of the avatar in the virtual world
Article
The study focuses on the relationship users of
virtual worlds, such as Second Life, may or may not
develop toward the avatar they use. A questionnaire
was developed to collect both qualitative and
quantitative data from students engaged in a
university assignment that required them to use an
avatar in Second Life. The findings are
contextualized and discussed: The distinctions
between software, hardware and self are blurred.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250919/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
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10547/250919
oai:uobrep.openrepository.com:10547/250919
2020-04-23 07:36:54.792
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2509392020-04-23T07:30:53Zcom_10547_132192col_10547_132230
Trinitis, Carsten
6a34947dfac48fd0c1891c400a06e265
-1
Küstner, Tilman
8e84b3491bf454041c28a305a0cd9cda
-1
Weidendorfer, Josef
606e5270239bfdeb523552f3cfd92164
-1
Smajic, Jasmin
7d27bdf7bc1472c7d49600865bed79fb
-1
2012-11-05T09:45:43Z
2012-11-05T09:45:43Z
2010
Trinitis, C. et al (2010) 'Sparse matrix operations on several multi-core architectures' The Journal of Supercomputing 57 (2):132-140
0920-8542
1573-0484
10.1007/s11227-010-0428-9
http://hdl.handle.net/10547/250939
The Journal of Supercomputing
From the issue entitled "Special Issue on Parallel Computing Technologies"
This paper compares various contemporary multicore-based microprocessor architectures from different vendors with different memory interconnects regarding performance, speedup, and parallel efficiency. Sparse matrix decomposition is used as a benchmark application. The example matrix used in the experiments comes from an electrical engineering application, where numerical simulation of physical processes plays an important role in the design of industrial products. Within this context, thread-to-core pinning and cache optimization are two important aspects which are investigated in more detail.
en
SpringerLink
http://www.springerlink.com/index/10.1007/s11227-010-0428-9
multicore
pinning
cache optimization
performance optimization
sparse matrices
Sparse matrix operations on several multi-core architectures
Article
This paper compares various contemporary multicore-based microprocessor architectures from different vendors with different memory interconnects regarding performance, speedup, and parallel efficiency. Sparse matrix decomposition is used as a benchmark application. The example matrix used in the experiments comes from an electrical engineering application, where numerical simulation of physical processes plays an important role in the design of industrial products. Within this context, thread-to-core pinning and cache optimization are two important aspects which are investigated in more detail.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/250939/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
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10547/250939
oai:uobrep.openrepository.com:10547/250939
2020-04-23 07:30:53.861
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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
oai:uobrep.openrepository.com:10547/2518142020-04-23T07:29:13Zcom_10547_132192col_10547_132230
Trinitis, Carsten
6a34947dfac48fd0c1891c400a06e265
-1
Weidendorfer, Josef
606e5270239bfdeb523552f3cfd92164
-1
2012-11-12T13:29:24Z
2012-11-12T13:29:24Z
2008-11
Weidendorfer, J., Trinitis, C.
(2008) 'Off-loading application controlled data prefetching in numerical codes for multicore
processors', 4 (1): 22-28, Int. J. of Computational Science and Engineering
1742-7185
http://hdl.handle.net/10547/251814
1742-7193
International Journal of Computational Science and Engineering
An important issue when designing numerical code in High Performance Computing is cache optimisation in order to exploit the performance potential of a given target architecture. This includes techniques to improve memory access locality as well as prefetching. Inherent algorithm constrains often limit the first approach, which typically uses a blocking technique. While there exist automatic prefetching mechanisms in hardware and/or compilers, they can not complement blocking with additional prefetching. We provide an infrastructure for off-loading application controlled prefetching on a chip multiprocessor, allowing to further improve numerical code already optimised by standard cache optimisation. Clear benefits are shown for real workloads on existing hardware.
en
Inderscience
http://dl.acm.org/citation.cfm?id=1457171
Off-loading application controlled data prefetching in numerical codes for multi-core processors
Article
An important issue when designing numerical code in High Performance Computing is cache optimisation in order to exploit the performance potential of a given target architecture. This includes techniques to improve memory access locality as well as prefetching. Inherent algorithm constrains often limit the first approach, which typically uses a blocking technique. While there exist automatic prefetching mechanisms in hardware and/or compilers, they can not complement blocking with additional prefetching. We provide an infrastructure for off-loading application controlled prefetching on a chip multiprocessor, allowing to further improve numerical code already optimised by standard cache optimisation. Clear benefits are shown for real workloads on existing hardware.
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/251814/1/license.txt
b79a1529374c8d02a5b1f30b27d2425e
MD5
1
false
10547/251814
oai:uobrep.openrepository.com:10547/251814
2020-04-23 07:29:13.182
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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oai:uobrep.openrepository.com:10547/2550522018-06-19T10:34:36Zcom_10547_132192col_10547_132230
Chen, Weiru
Lu, Jing
0000-0001-9163-8795
600
Keech, Malcolm
2012-12-10T08:16:52Z
2012-12-10T08:16:52Z
2010
Chen, w. Lu, J, Keech, M (2010) Discovering exclusive patterns in frequent sequences. International Journal of Data Mining, Modelling and Management,Vol.2,(3) pp.252 - 267
1759-1163
1759-1171
http://hdl.handle.net/10547/255052
International Journal of Data Mining, Modelling and Management
en
Inderscience Publishers
http://www.inderscience.com/info/inarticle.php?artid=33536
An error occurred on the license name.
An error occurred getting the license - uri.
G560 Data Management
G510 Information Modelling
data mining
Discovering exclusive patterns in frequent sequences
Article
LICENSE
license.txt
license.txt
text/plain
1691
https://uobrep.openrepository.com/bitstream/10547/255052/4/license.txt
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MD5
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oai:uobrep.openrepository.com:10547/255052
2018-06-19 10:34:36.758
University of Bedfordshire Repository
marcus.woolley@beds.ac.uk
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