University of Bedfordshire Repository: Recent submissions
Now showing items 41-60 of 8198
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What makes a good nursing education: meeting the needs of students and society in a free-market education system - cluster analysis of United Kingdom universitiesExamine quality of education through classification of universities providing undergraduate pre-registration nursing courses in the United Kingdom using data from university league tables. Educational quality for nursing courses can be defined in many ways. University league tables are often used, but it can be difficult to interpret these because of the diversity of measures. These include educational input and output measures, but are not patient focussed. Cluster analysis of league table data. Data were from the Complete University and Guardian University League Tables. Cluster analysis was undertaken using euclidean distance and average linkage. Data were scaled by turning each value into a percentage of the maximum possible score. Careers and graduate prospects for nurses are high. Satisfaction with teaching and feedback are closely related and while these broadly cluster with research quality but there was a weak relationship between research quality and overall student satisfaction (correlation -0.008, SE 0.049, p = 0.869, adjusted R2 = -0.014). There was no clear pattern and few universities excelled in all areas. Traditional methods of ranking universities does not fit nursing well, where employment is higher and research quality lower than other subjects. There was no clear pattern in university results. Countries considering a free-market approach to nurse education should consider how they will meet the needs of students and health and social care services, while promoting research. The quality of nursing education should include broader measures of societal value and address the theory-practice gap.
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The impact of generative AI on academic integrity of authentic assessments within a higher education contextGenerative AI (hereinafter GenAI) technology, such as ChatGPT, is already influencing the higher education sector. In this work, we focused on the impact of GenAI on the academic integrity of assessments within higher education institutions, as GenAI can be used to circumvent assessment approaches within the sector, compromising their quality. The purpose of our research was threefold: first, to determine the extent to which the use of GenAI can be detected via the marking and moderation process; second, to understand whether the presence of GenAI affects the marking process; and finally, to establish whether authentic assessments can safeguard academic integrity. We used a series of experiments in the context of two UK-based universities to examine these issues. Our findings indicate that markers, in general, are not able to distinguish assessments that have had GenAI input from assessments that did not, even though the presence of GenAI affects the way markers approach the marking process. Our findings also suggest that the level of authenticity in an assessment has no impact on the ability to safeguard against or detect GenAI usage in assessment creation. In conclusion, we suggest that current approaches to assessments in higher education are susceptible to GenAI manipulation and that the higher education sector cannot rely on authentic assessments alone to control the impact of GenAI on academic integrity. Thus, we recommend giving more critical attention to assessment design and placing more emphasis on assessments that rely on social experiential learning and are performative rather than output-based and asynchronously written. Practitioner notes What is already known about this topic GenAI has enabled students to complete higher education assessments quickly and with good quality, leading to challenges in academic integrity. GenAI has transformed the requirements and considerations in assessment design in higher education. Authentic assessments are seen as a prominent way to tackle the GenAI challenge. What this paper adds We provide quantitative and qualitative experimental evidence suggesting that GenAI can generate authentic assessments that pass the scrutiny of experienced academics. We demonstrate how the use of authentic assessments alone does not protect the academic integrity of students in higher education. Our qualitative analysis indicates that markers may generate false positive and false negative results if they suspect GenAI tampering in an assessment. Thus, students' learning is not assessed correctly. Implications for practice and/or policy When universities and national organisations design policies regarding GenAI, authentic assessments are not the panacea; the focus must remain on assessment design. Assessments of learning need to shift from assessing output to focusing on process and relevance to the workplace. That would mean a paradigmatic shift from written assessments to synchronous interpersonal assessments. The move away from written assessments has implications that are far reaching for the academy if written assessments cannot be trusted as a reliable indicator for and of learning.
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A formal framework for software development using Publish/Subscribe architectureHigh flexibility of publish/Subscribe architecture that is a common architectural style for component based systems make it to be capable of developing and supporting large software systems. But difficult aspect of Publish/Subscribe systems is their validation. Existing efforts for developing formal foundation for specifying and reasoning about these systems are hard to use by practitioners who are not familiar with formal methods. To face this challenge this paper proposes a formal framework for software development using Publish/Subscribe architecture. Modeling components by Abstract State Machines (ASMs), presentation new characteristics for parametric dispatcher and the use of modelbased testing for validation are the key features of this framework. © 2010 IEEE.
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Using ASMs and Spec# to formal modeling and analysis publish/subscribe architecturesThe Publish/Subscribe architecture has been proposed as a suitable architecture to develop highly dynamic systems. Although the structure of this architecture is easy to understand, unfortunately modeling and validating the whole system is complicated. In this paper, we present a formal approach based on Abstract State Machines (ASM) to model systems using this architecture. Then, to validate the designed models we use model-based testing. To do so, we propose a transformation from ASMs to Spec# language. The key feature of the proposed approach are new parametric dispatcher and the use of model-based testing for validation. © 2010, INSInet Publication.
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Monte-Carlo study of some robust estimators: The simple linear regression caseIn this study, Least Trimmed Squares (LTS), Theil’s Pair-wise Median (Theil) and Bayesian estimation methods (BAYES) are compared relative to the OLSE via Monte-Carlo Simulation. Variance, Bias, Mean Square Error (MSE) and Relative Mean Square Error (RMSE) were calculated to evaluate the estimators’ performance. The Simple Linear Regression model is explored for the conditions in which the error term is assumed to be drawn from three error distributions: unit normal, lognormal and Cauchy. Theil’s non-parametric estimation procedure was found to have the strongest and most reliable performance. The subsequent-best results are acquired from LTS approach Though it was observed that the Bayesian estimators are affected by deviation of the dataset from normality, yet it is established from the results that the Bayesian estimators performed optimally more than all other competitors, even under non normal situations (especially under the standard lognormal distribution) in some cases, except whenever the error is drawn from a heavy tail distribution (Lognormal and Cauchy)..OLSE is most effective reliable as long as the normality assumptions preserve
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Applying software engineering solutions to law firm management, Nigeria as a case studyLegal technology has changed the way law firms are managed worldwide. Substantial research has been undertaken on the role of legal technology in law firm management especially in developed countries. Though, most studies have only focused on the benefits and challenges, and have failed to analyse law firm management areas requiring software solutions. The principal objective of this paper was to investigate the level of technology adoption among Nigerian law firms, as well as to develop a software solution to automate work processes in identified areas. This investigation was done using systematic literature review to gather relevant data on the subject area and identify knowledge gaps. Findings from the research indicated a need for further analysis of the various areas in law practice that could require software solutions. The findings also discussed the implementation of a property management module which is an important contribution to the management of law firms in Nigeria. A speech-to-text transcription feature was also implemented to eliminate the need for lengthy typing
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A conditional GAN and dual-channel hybrid deep feature framework for robust sensor fault detection in WSNsSensor-generated data is vital to the operation of numerous systems and services in the rapidly growing field of the Internet of Things. Wireless Sensor Networks, as an essential setup for these systems, are frequently deployed in large, diverse, and often harsh environments. However, these networks are highly vulnerable to various faults, potentially leading to improper data transmission, reliability, and financial stability of the systems. To address these challenges, we propose a hybrid model for sensor fault detection that integrates a machine learning classifier with the deep learning (DL) model, specifically VGG-16 and ResNet-50. Synthetic samples are generated using a Conditional Generative Adversarial Network and common sensor faults, such as hardover, drift, spike, erratic, and stuck fault are introduced by leveraging a publicly available temperature sensor dataset. Time-series data is transformed into Gramian Angular Field images, from which deep features are extracted using VGG-16 and ResNet-50. These extracted features are then fused to form a hybrid feature pool. Our framework effectively addresses problems related to data imbalance and enhances accuracy. The proposed model outperforms the individual feature sets, VGG-16 (89.22%) and ResNet-50 (84.21%), achieving notable accuracy of 92.55% with the fused feature set, underscoring its potential for robust sensor fault detection.
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Roles of e-service in cconomic development: case study of Nigeria, a lower-middle income countryE-Government activities are still very low in Nigeria, a lower middle-income country, and this is hindering E-Service adoption. E-Service is inextricably linked to E-Government and they will not develop separately, but as one progresses the other moves forward. Having a new technology like E-service opens new opportunities for government, private and public sectors. Despite the fact that the new technology will not be without a hindrance, the overall benefits of using outweigh its lapses. Nigeria has overtaken South Africa as top Africa economy. There is still more to be done in increasing the revenue of the country, reducing the huge external debt owing the World Bank. Furthermore, there is a need to sustain the new status as top economy in Africa. There are many unresolved problems like corruption. This leads to a slow movement of files in offices, embezzlement, election irregularities, and port congestions among others. Adoption of E-Service will help to reduce these problems and increase the revenue base of the country. This study will identify e-Service roles in economic development in Nigeria, a lower middle-income country. The study is based on literature review methodology and recent online survey that shows the level of E-Service awareness and roles. We shall also examine previous conference papers related to this study and necessary recommendations will be suggested and offered to the authority in Nigeria on how best the e-service adoption will add more success to the economic development.
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E-service security: taking proactive measures to guide against theft, case study of developing countriesThe rapid diffusion of internet couple with the digitalization of most economies in the world today which have given rise to e-Government services adoption to promote good governance capability and accountability of public organisations. There are still concerns about e-Service security in developing countries as consumers and online users have become the victims of co-ordinated cybercrimes despite the fact that e-Government services are helping to boost government revenue through very fast transactions, reduce corruption through the use of modern technology and transparent operations. It is imperative to state that the security issues in the E-Service domain have been gaining more attention over past two decades. This paper discusses the general overview through the use of on-going online survey and literature review of related works in e-Service security as existing approach to combat the issues still has many setbacks. The findings show a deep understanding of what proactive measures need to be taken against e-Service theft in developing countries. A model also emerged that capture the e-Service technology security issues in developing countries and the proactive measures to reduce and eradicate these threats.
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An institutional ethnography of exclusionary processes and practices in English primary schoolsThis thesis investigates the exclusionary processes and practices in English primary schools, examining how school ethos, behaviour policies, and institutional frameworks contribute to the exclusion of vulnerable children. Grounded in Institutional Ethnography (IE), this study uncovers the often-hidden mechanisms that lead to formal and informal exclusions. IE provides a methodological lens that traces how ruling relations, such as behaviour policies, shape local practices, often without regard for the developmental needs of younger children (Smith, 2005). By focusing on primary schools, this research addresses a significant gap in the literature. While much research has been dedicated to exclusions in secondary schools, primary schools remain under-explored, despite growing evidence that exclusionary practices can have long-lasting effects on children’s educational trajectories. Exclusion rates disproportionately affect children with Special Educational Needs and Disabilities (SEND), those from minority ethnic backgrounds, and socio-economically disadvantaged children (Gazeley et al., 2020). The study adopts a multi-method approach, combining interviews, observations, and policy analysis. A key finding is that exclusion is not only the result of overt policy decisions but also stems from the informal, everyday practices that reinforce institutional norms. These hidden exclusions, such as the use of isolation rooms or unofficial removals, often escape scrutiny and disproportionately impact vulnerable children (Done & Knowler, 2020). Moreover, this research highlights the tension between national accountability frameworks, which emphasise discipline ii and performance, and the need for flexible, child-centred approaches that can better accommodate the needs of primary-aged children. The findings challenge the notion that exclusion is a necessary response to challenging behaviour, arguing instead that it is often a systemic failure to address the root causes of that behaviour. The research calls for more inclusive, trauma-informed approaches to behaviour management that move away from punitive measures and towards supportive interventions. These approaches not only reduce the risk of exclusion but also foster a more inclusive learning environment, promoting equity and improving outcomes for all children. In conclusion, this thesis makes a significant contribution to the understanding of exclusionary processes and practices in primary schools. It advocates for urgent reforms in national and local policy, promoting inclusive practices that are developmentally appropriate and responsive to the unique needs of vulnerable children. By shifting the focus from punishment to support, schools can become environments where all children, regardless of background or challenges, are given the opportunity to thrive.
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How to do things without wordsFor this thesis there are two backgrounds: 1 systemic practice in social work, family therapy, training, coaching and consultancy, and 2 physical theatre, martial arts and other physical practices. As a starting point there is a suspicion or hunch from my own practice that systemic practice overly relies and focusses on verbal communication, missing out on the potential for change that non-verbal communication offers. This was suspected to be particularly the case after the linguistic turn that could be summarised in the sentence: Reality is created in language. Three research questions were developed that build on each other: 1 Is there now a tendency to focus on the spoken and written word or verbal communication in the field of systemic practice? 2 If so, what are the consequences for practitioners of a focus on verbal aspects of communication? 3 Are there ways the practitioner can include non-verbal aspects of communication in a useful way? Methodologically there are two main strands: 1 A review of the literature examines introductions to systemic practice and philosophical, sociological and linguistic trends that underpin and influence developments in systemic practice on the level of approach, to map the terrain of systemic practice. Ideas from communication theory are used to further investigate what is focussed on and what is meant by language. This review offers a new distinction of symbolic and dynamic action instead of verbal and non-verbal communication. Using ideas from process philosophy and affect theory alongside ideas from physical theatre in a framework of metaphors, a new theoretical frame for both practice and the research of it is developed. 2 A series of workshops with systemic practitioners and practitioners from physical practices investigated how (social) reality is also created in dynamic action. These workshops were video recorded and followed up with verbal discussions with the practitioners. Earlier workshops were analysed within a social constructionist framework and later workshops were analysed to incorporate the arguments made when developing a new theoretical frame for both practice and the research of it. Both the practical and theoretical investigations lead to answer the research questions: While practitioners might attend to dynamic action and are certainly influenced by it, this is not theorised much. The literature as well as practitioner interviews (as part of the workshops) indicate that after the linguistic turn in the field the central metaphor has changed from systems and feedback loops to language and meaning. If practitioners respond to dynamic action they do this mostly in symbolic action. But language in form of symbolic action can only ever approximate what it describes and there is a lot of potential for change in using dynamic action. Beyond developing a theoretical frame for attending to and using dynamic action in systemic practice and systemic practitioner research, techniques for use in practice are developed. These ideas, by no means an exhaustive list, are offered as a catalogue of ‘cards’, brief descriptions with some thoughts in which circumstances these ideas might be useful and video examples.
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Understanding transnational online child sexual exploitation and abuse by British men against Filipino childrenOnline child sexual exploitation and abuse (CSEA) causes significant harm to victims, with governments and organisations around the world seeking to prevent and tackle it. To support these efforts, the factors that facilitate this crime must be understood. Research shows that online CSEA offending is facilitated by a range of sexual, psychological, and non-sexual factors, but there is no consideration within the existing literature of the factors that facilitate online CSEA that occurs across national borders. This research helps to address this gap. Specifically, this study explores the factors within Britain that facilitate transnational online CSEA of children in the Philippines by British men. Through semi-structured interviews with 30 CSEA professionals based in the Philippines and Britain, this research explores the range of factors that these professionals perceive as facilitating transnational online CSEA. Many of the factors that apply for online CSEA offending in general apply for transnational online CSEA, including sexual motivations, offenders’ desire for power, and permission-giving thoughts that excuse or normalise abuse. This study uniquely surfaces and examines facilitating factors that may be present in transnational online CSEA offending. A key finding discussed throughout this study is the role of racism, with geographical distance and cultural and physical differences between themselves and their victims providing a means for offenders to dehumanise their victims and justify the abuse. This study also finds that the media, pornography, and online communities can play a significant role in shaping social attitudes about race and sex that can act to facilitate or excuse transnational online CSEA. These factors are explored through the Technology Conscious Socio-ecological Model, developed for this research to enable an exploration of the range of factors that exist within an offender’s whole environment, including the role of the internet and technologies in facilitating this abuse. The findings from this research are used to develop a set of recommendations for government, technology companies and for further research. These should be considered and taken forward to support the development of effective evidence-based solutions that will help to prevent transnational online CSEA from occurring in the first place.
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Navigating the personal and professional: insights from global majority family systemic psychotherapistsThis thesis explores the journeys of Global Majority (GM) Family Systemic Psychotherapists as they navigate the interplay of personal and professional identities in the UK. By centring and co-constructing knowledge through their personal stories and lived experiences, this research asks: What can we learn from the journeys of Global Majority family systemic psychotherapists as they navigate their personal and professional identities within predominantly white contexts? Employing a multi-methodological approach grounded in narrative inquiry, critical autoethnography, critical race theory, intersectionality, and storytelling, the study critically engages with participants’ narratives. One paired interview and individual narrative interviews with six therapists, three of whom further contributed reflections on their interview transcripts, highlight systemic challenges such as racism, cultural marginalisation, and identity negotiation. While all participants were from the UK, limiting generalisability, the combination of narrative, autoethnographic, and storytelling methods provides rich, in-depth insights into their journeys, thereby illuminating an intricate tapestry of personal and professional identities that broadens the discourse on diversity and inclusivity in mental health practice. Findings reveal the complex interplay between personal and professional selves, shaped by systemic biases, cultural heritage, and prevailing professional norms. Some themes that emerged include dual identity navigation, resilience afforded by cultural heritage, and ethical positioning, underscore the ways in which GM therapists adapt to institutional inequalities. Participants identified gaps in training and institutional support, calling for inclusive reforms that acknowledge and integrate the diverse lived realities of therapists from GM backgrounds. This thesis provides original insights into how systemic therapy training and professional practice can evolve to become more inclusive, reflective, and responsive to previously underacknowledged experiences. It emphasises the importance of integrating therapists’ cultural identities into training and practice as assets that enhance therapeutic relationships and foster authenticity. Tailored supervision and peer networks emerge as strategies. Through the transformative power of storytelling and the co-construction of knowledge, this thesis contributes meaningfully to Family Systemic Psychotherapy. It advocates for structural changes, encouraging professionals and institutions to incorporate the nuanced, culturally informed perspectives of GM therapists, enabling more equitable and inclusive therapeutic spaces, ultimately enriching the field of systemic practice.
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The impact of the ProELT training program on Malaysian English teachers' self-efficacyRecognizing the importance of mastering the English language and its potential to enhance the country's socioeconomic status, Malaysia has dedicated efforts to improve the language proficiency of its citizens through the Malaysian Roadmap for English Language Education 2015–2025. One of the main efforts is bolstering the English language proficiency of school teachers via professional development, which has resulted in the implementation of the year-long Professional Up-skilling for English Language Teachers (ProELT) training program for in-service teachers. Since not much is known about how teachers' professional development affects their self-efficacy, particularly in the context of language teaching, this study aims to examine how ProELT affects language teachers' self-efficacy. The training impact of the ProELT course and its relationship to different elements of self-efficacy were also examined in relation to teachers' improvement in CEFR bands. An online questionnaire, TESOL Instructors’ Self-Efficacy Index (TISI), was administered to both primary and secondary school English teachers who had attended the ProELT training program. Generally, the findings indicate that professional development programs can potentially enhance teachers' self-efficacy in terms of student engagement and instructional strategies. It also highlights the relevance of teacher training programs in elevating teachers' self-efficacy and professional practice.
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The association between female partner dyadic adjustment and stress following IVF: the moderating effects of romantic attachmentConsidered a deeply personal and challenging experience, infertility affects numerous individuals and couples worldwide. Previous research has suggested a relationship between dyadic adjustment, romantic attachment, and levels of infertilityrelated and general stress among couples undergoing IVF procedures. The present prospective longitudinal study aimed to investigate whether women’s subjective perception of their couple’s dyadic adjustment prior to undergoing IVF procedures is associated with infertility-related stress and general stress. Furthermore, the study explores the moderating effects of dyadic adjustment and romantic attachment style on the impact of IVF outcome, infertility-related stress, and general stress. A total of 42 Romanian women diagnosed with infertility in committed relationships completed the ECR-short version, DAS-32, FertyQal, and GHQ-12 at two time points, before and after their IVF cycles. The results suggest a statistically non-significant negative correlation between dyadic adjustment and infertility-related stress (r = -.14, p = .18) and a statistically significant weak positive correlation with general stress (r = .27, p = .04). The results of the multiple regression analysis reported that anxious attachment style at T1 is significantly associated with general stress at T2 (β =.82, p <.001), controlling for pregnancy status. Non-statistically significant correlations were found between infertility-related stress, general stress, and IVF outcome. Clinicians should consider clients’ attachment style and relational dynamics when adopting personalised interventions to meet individual needs effectively.
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The experience of diaspora as the substance of the researcher’s artwork: an autoethnographic explorationThis practice-based research project focuses on the subjective experience of the author as a photographic artist living and working in the Bangladeshi community in the United Kingdom. It uses visual autoethnographic methodologies and self-reflexive methods to review photographs taken by the author in and through her own diasporic experience. The project reviews the work made by the author in the context of other artists/photographers working in the same discipline or similar work process and makes comparisons between creative methods and approaches. The project focuses on key emotional experiences that are often common to persons within a diasporic experience, for example, displacement, alienation, nostalgia, homesickness, and liminality. These ideas are explored visually using photographic image-making in the ongoing style of the author as an artist, using photographic cameras—Holga—that produce unpredictable outcomes and analogue film exposure and processing that affect the image in different ways. For the author, this method has a metaphoric similarity to the lived and felt diasporic experience. This research intends to fill an identified gap in the scope of diasporic research and the Bangladeshi community, specifically, visual research that captures such experiences.
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Virtual escapes and real-world struggles: a qualitative inquiry into Internet Gaming Disorder, stress and psychoemotional statesInternet Gaming Disorder (IGD) poses significant concerns for mental health. While quantitative research has advanced our understanding, the lived experiences of those affected remain underexplored. This qualitative study addresses this gap by interviewing individuals with IGD symptoms, focusing on the interplay between gaming behaviour, stress, cognition, and emotions. Research spanning over three decades links excessive and problematic gaming (EPG) with negative mental health outcomes, including depression, anxiety, and suicidal ideation. This led to the introduction of IGD as the dominant concept of what is considered gaming addiction. However, various scholars have proposed theories suggesting that IGD is rather a maladaptive stress response than addiction, yet there is a lack of qualitative insights into this area. This study interviewed individuals exhibiting IGD symptoms to uncover personal experiences and identify common themes. 11 (10 Male) participants exhibiting symptoms of IGD were recruited from online gaming communities, with the use of purposive, criterion, and snowball sampling. Data was gathered through semi-structured interviews conducted online with questions related to personal life, psychoemotional states and gaming behaviour and analyzed with Reflexive Thematic Analysis (RTA). Six key themes have been identified: 1) The double-edged sword of stress and gaming as a coping mechanism, 2) Escaping reality: Real vs. Virtual world and emotional difficulties, 3) Online gaming as social compensation, 4) Achievement Hunter: the obsession with progress, 5) From hobby to ‘addiction’, and 6) Inner battles: trauma, mental schemas, and gaming. The findings enhance understanding of behaviours and psychoemotional states related to IGD and its implications. The study partially supports existing models linking IGD to maladaptive coping and underlying mental health problems. However, it also highlights their limitations and the need for further research with more comprehensive frameworks. Finally, in the context of practical implications, it is suggested to adopt multifaceted approaches to support individuals with IGD.
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Challenging journeys: stress, coping and expeditionsThis thesis examined stress and coping situated in an expedition context which thus far is under-represented in research literature. The three studies draw extensively upon transactional stress models and contemporary derivatives to generate a holistic understanding of expedition coping. Adopting a qualitative methodology to capture expedition narratives, the main aim of the research was to explore the stress and coping processes using a range of transactional approaches as adventurers participate in demanding journeys. The three studies employed both ethnographic and pluralistic case studies to provide a naturalistic perspective of the lived expedition experience. Study one focused on the exploits of a solo adventurer travelling in the High Pyrenees. The findings illustrated the emotional intensity of solo journeys, recognising the centrality of emotions in the coping process. It became apparent that both emotional regulation and self-regulation are integral to the appraisal process, resulting in a clear sense of significance and meaning for the participant. The second study considered the challenges of leading youth expeditions in wilderness settings. This identified the prominence of commitment and coping resources when leading expeditions. Further, study two established the importance of personal values, beliefs and motivation in the coping process as an essential quality when taking responsibility for young explorers. The final study analysed the experiences of two elite runners in their quest to complete a record breaking “fast” expedition. Using broader, integrated transactional models to provide temporal congruity, the findings reinforced the importance of dyadic relationships in fostering robust collective coping. This was one of a number of resources which were found to contribute towards preventative, reactive and proactive coping. Additionally, social support in various guises was found to be an important factor to all three journeys. Collectively, by using micro-analytical, naturalistic inquiry the three studies revealed that most participants recognised that expedition coping has a profound meaning, potentially leading to a sense of growth and purpose. Detailed analysis using integrated perspectives highlighted a number of significant patterns revealing a range of important coping considerations. These included: self-regulation, dyadic coping, coping flexibility, conservation of resources, meaning making and stress-related growth. The findings will have an applied efficacy for the expedition community who can benefit from the detailed insights into expedition stress and coping.
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The ingestion of 39 or 64 g· hr− 1 of carbohydrate is equally effective at improving endurance exercise performance in cyclistsIn an investigator-blind, randomized cross-over design, male cyclists (mean± SD) age 34.0 (± 10.2) years, body mass 74.6 (±7.9) kg, stature 178.3 (±8.0) cm, peak power output (PPO) 393 (±36) W, and VO2max 62 (±9) ml·kg−1min−1 training for more than 6 hr/wk for more than 3y (n = 20) completed four experimental trials. Each trial consisted of a 2-hr constant load ride at 95% of lactate threshold (185 ± 25W) then a work-matched time trial task (~30min at 70% of PPO). Three commercially available carbohydrate (CHO) beverages, plus a control (water), were administered during the 2-hr ride providing 0, 20, 39, or 64g·hr−1 of CHO at a fluid intake rate of 1L·hr−1. Performance was assessed by time to complete the time trial task, mean power output sustained, and pacing strategy used. Mean task completion time (min:sec ± SD) for 39g·hr−1 (34:19.5 ± 03:07.1, p = .006) and 64g·hr−1 (34:11.3 ± 03:08.5 p = .004) of CHO were significantly faster than control (37:01.9 ± 05:35.0). The mean percentage improvement from control was −6.1% (95% CI: −11.3 to −1.0) and −6.5% (95% CI: −11.7 to −1.4) in the 39 and 64g·hr−1 trials respectively. The 20g·hr−1 (35:17.6 ± 04:16.3) treatment did not reach statistical significance compared with control (p = .126) despite a mean improvement of −3.7% (95% CI −8.8−1.5%). No further differences between CHO trials were reported. No interaction between CHO dose and pacing strategy occurred. 39 and 64g·hr−1 of CHO were similarly effective at improving endurance cycling performance compared with a 0g·hr−1 control in our trained cyclists.
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Current research development on food contaminants, future risks, regulatory regime and detection technologies: a systematic literature reviewFood contaminants pose serious threats to public health, with profound negative impacts on the economy, society, and environment. However, there is a lack of timely and comprehensive reviews on the latest developments in food contaminants and effective measures to prevent contamination, particularly through novel intelligent detection technologies and regulatory regimes. This study addresses this knowledge gap by presenting a timely review of the literature, focusing on current types of food contaminants, advances in detection technologies, emerging risks, and the latest developments in regulatory frameworks. The study reviewed 116 relevant articles published between 2019 and 2024 and conducted a thematic analysis. The food contaminants were classified into three categories: biological, chemical, and physical. The study identified six key drivers of current and future food safety risks: demographic change, economic factors, environmental conditions, geopolitical shifts, consumer priorities, and technological advancements. Findings reveal the uneven understanding of contaminants of emerging concern, future drivers of contaminants of emerging concern, and their impact on the food system, the environment, and human health. These findings highlight the need for future research on systematically identifying and validating the regional differences in food contamination prevention measures and assessing the extent to which these differences impact the effectiveness of prevention, mitigation, and control efforts. The findings also call for more international cooperation in food contamination research and the active involvement of technology partners to facilitate the application of cutting-edge technologies in food contamination detection and control.