• QoE modelling for VP9 and H. 265 videos on mobile devices

      Song, Wei; Xiao, Yao; Tjondronegoro, Dian; Liotta, Antonio (ACM, 2015)
    • A qualitative analysis of psychological processes mediating quality of life impairments in chronic daily headache

      Tenhunen, K.; Elander, James; University of Derby (2005)
      Quality of life impairments are greater in chronic daily headache (CDH) than in episodic headache conditions like migraine. This qualitative interview study aimed to identify psychological processes associated with quality of life impairments among individuals meeting diagnostic criteria for CDH. Grounded theory analysis showed that perceived loss of control was the central experience mediating the impact of CDH on quality of life. The results provide explanations for previous quantitative findings about quality of life impairments in CDH, and could inform interventions to reduce the impact of CDH. Further research could also examine the roles played by perceived control in the onset and development of CDH, including possible links with pre-emptive analgesic use.
    • A qualitative analysis of psychological processes mediating quality of life impairments in chronic daily headache

      Tenhunen, Katri; Elander, James; University of Derby (SAGE Publications, 2005-05-01)
      Quality of life impairments are greater in chronic daily headache (CDH) than in episodic headache conditions like migraine. This qualitative interview study aimed to identify psychological processes associated with quality of life impairments among individuals meeting diagnostic criteria for CDH. Grounded theory analysis showed that perceived loss of control was the central experience mediating the impact of CDH on quality of life. The results provide explanations for previous quantitative findings about quality of life impairments in CDH and could inform interventions to reduce the impact of CDH. Further research could also examine the roles played by perceived control in the onset and development of CDH, including possible links with pre-emptive analgesic use.
    • Qualitative analysis of qualitative evaluation: an exploratory examination of investigative interviewers’ reflections on their performance

      Griffiths, Andy; Walsh, Dave; University of Derby; Department of Social Sciences, University of Derby, Derby, UK; Department of Social Sciences, University of Derby, Derby, UK (Taylor and Francis, 2017-10-12)
      Self-evaluation of interviews conducted by law enforcement professionals is a principal feature of a prescribed interview framework in England and Wales, underpinning their practice development. However, self-evaluation has been found in prior research to be neglected. Building on our recent study (which found that interviewers regularly over-rated themselves, when compared to our independent ratings), the same interviewers assessed their interview skills by way of completing an extensive reflective log. We found that those we regarded as skilled in our prior study tended to be more accurate in identifying their strengths and areas for improvement, while planning to correct such shortfalls in their future practice. On the other hand, those we had earlier rated as least skilled tended to be much less reflective, being both descriptive and inaccurate in their understanding of key interview tasks. They also remained inaccurate concerning their own interview skills, failing to be prospective in planning to improve their skills. As such, while reflective logs appear to be, for skilled interviewers, both a prompt for accurate self-assessment and a catalyst for planning further professional development, we also caution that such tools need further refinement to achieve the same goals for those either less reflective or less skilled.
    • A qualitative assessment of providing quality electronically mediated feedback for students in higher education

      Lees, Dave; Carpenter, Victoria (2013-06-24)
      Abstract: The subject of feedback for students is one of the most important contributors to the student experience and attracts one of the lowest responses within the National Union of Students survey. This paper reports on the feasibility of providing feedback on written assignments by marking electronically using the comments function on Microsoft Word and also providing verbal feedback via use of a hand held digital voice recorder. The students (post graduate part-time business students) were surveyed as to their response to this feedback. The paper reports the feedback from both the tutor and the student perspective and examines the impact on the experience of both groups. The results were positively in favour of the use of audio feedback but are different to results in other studies in that it is concluded that a combination of both typed and verbal feedback was preferred by the students. Keywords: audio-feedback; feedback; written feedback; electronically mediated feedback; recorded feedback; online submission; assessment; student experience; National Student Survey; NSS.
    • Qualitative case study methodology: Automatic design and correction of ceramic colors.

      Bagdasar, Ovidiu; Birlutiu, Adriana; Chen, Minsi; Popa, Ioan-Lucian; University of Derby; University of Alba Iulia; University of Huddersfield (IEEE, 2017-11)
      This paper is focused on two major problems within the ceramics industry. The reproduction of a desired color from pigments (which is time-intensive), and the correction of colors on the production line (which is costly) are processes which still rely heavily on numerous experiments carried out by human operators. This study presents the key aspects of these two processes and suggests some mathematical and computer sciences tools, aimed at automatizing the current procedures. Data was provided by an industrial partner, where the proposed models and solutions will be tested and validated.
    • A qualitative investigation into the experience of neuro-linguistic programming certification training among Japanese career consultants

      Kotera, Yasuhiro; University of Derby (2017-05-12)
      Although the application of neuro-linguistic programming (NLP) has been reported worldwide, its scientific investigation is limited. Career consulting is one of the fields where NLP has been increasingly applied in Japan. This study explored why career consultants undertake NLP training, and what they find most useful to their practice. Thematic analysis of semi-structured interviews with six career consultants, who had attended NLP certification training, revealed that they wanted to learn action-oriented NLP-based coaching skills in addition to their active-listening-based counselling skills. NLP provided frameworks to lead their clients’ thoughts efficiently, deepened their understanding of the human mind, and developed their attitude to understand others and themselves. The NLP skills found most useful were reframing and the Disney strategy.
    • Qualitative research in education

      Wallace, Sue; Atkins, Liz; University of Huddersfield (Sage, 01/01/2012)
      This accessible and practical book is a perfect quick guide for postgraduate researchers in education. Looking at the interdependence of teaching and research, the authors show that a critical and analytical exploration of policies and practices is a necessary part of what we mean by being a 'professional' in education. This co-authored book is structured around a range of methods applicable to educational research and appropriate for use by practitioners at all stages of their professional development. It takes recognisable, 'real life' scenarios as its starting point for each discussion of method, so that readers are able to start from the known and familiar. As well as exploring theoretical aspects of research method, each chapter provides practical tasks and points for discussion and reflection. These approaches, taken together, are designed to build confidence and encourage reader engagement and enjoyment.
    • A qualitative study of men’s behavioural changes during weight loss maintenance

      Lozano-Sufrategui, Lorena; Pringle, Andy; Carless, David; Drew, Kevin; Leeds Beckett University; University of Derby; University of Edinburgh (Sage, 2020-11-22)
      This study aims to understand the behaviour changes men who attended a weight loss programme engage in during weight maintenance. Understanding the needs of men in the context of weight loss maintenance is important, as they are underrepresented in this body of literature. Given its focus on personal experience, this study adopted a qualitative design. Semi-structured interviews supported by participant-generated photo-elicitation techniques to explore the behavioural changes 12 men engaged in 6 months after attending a men-only weight loss programme. Data analysis was undertaken through thematic analysis and Gleeson’s polytextual thematic analysis. This study suggests that the key behaviours men engaged in to maintain weight loss can be classified into four categories: (1) ‘Small’ changes, (2) Informed decisions, (3) Monitoring of behaviours, and (4) Dealing with ambivalence. This study makes an original contribution to knowledge and can have important implications for practice in the area of men’s health, particularly with regard to the long-term impact of weight loss interventions.
    • A qualitative study of the understanding and use of ‘compassion focused coping strategies’ in people who suffer from serious weight difficulties.

      Gilbert, Jean; Stubbs, James; Gale, Corinne; Gilbert, Paul; Dunk, Laura; Thomson, Louise; Derbyshire Healthcare NHS Trust; Slimming World; University of Derby; University of Nottingham (Biomed Central, 2014-11-11)
      Abstract Background The physical and psychological health problems associated with obesity are now well documented, as is the urgency for addressing them. In addition, associations between quality of life, depression, self-esteem, self-criticism, and obesity are now established indicating a need for a better understanding of the links between self-evaluation, affect-regulation and eating behaviours. Methods Compassion has now been identified as a major source of resilience, helpful self-relating and affect regulation. Thus this study used semi-structured interviews to explore the understanding and experiences of compassion in 2 overweight men and 10 women seeking help for weight problems. The interviews examined people's understandings of compassion, their recall of experiences of compassion in childhood, their current experiences of receiving compassion from others, being compassionate to others, being self-compassionate, and whether they would be compassionate or self-critical for relapses in overeating. Interviews were transcribed and analysed using thematic analysis (Qual Res Psychol, 3: 77-101, 2006). Results Participants saw compassion as related to ‘caring’ and being ‘listened to’. However, their recall of earlier experiences of compassion was of primarily practical help rather than emotional engagement. Typically their response to their own relapse and setbacks were self-criticism, self-disgust and even self-hatred rather than self-caring or understanding. Self-critical/hating responses tend to be associated with poor weight regulation. Conclusions When people with weight problems relapse, or struggle to control their eating, they can become quite self-critical, even self-hating, which may increase difficulties with emotionally coping and maintaining healthy lifestyles and eating habits. Although turning to others for support and compassion, and becoming self-compassionate are antidotes to self-criticism, and are associated with better coping and mental health, many participants did not utilise compassionate strategies – often the opposite. It is possible that interventions that include mindfulness and compassion training could be helpful for these difficulties.
    • A qualitative study on cancer care burden: experiences of Iranian family caregivers.

      Hassankhani, Hadi; Eghtedar, Samereh; Rahmani, Azad; Ebrahimi, Hossein; Whitehead, Bill; Tabriz University, Iran; University of Derby (Lippincott, Williams & Wilkins, 2019-01-01)
      The aim of this study was to explore the experiences of Iranian family caregivers with regard to the burden of caregiving. This is in the context of illuminating and identifying the experiences of family members from different contextual perspectives. In this qualitative study, purposive sampling was conducted in 2016. Data were collected using semistructured interviews and were analyzed using content analysis. Data analysis identified 4 categories and 8 subcategories: (1) burnout (physical problems and psychoemotional stress), (2) role conflict (balancing caring roles and family responsibilities; failure in professional or educational roles), (3) health system tensions (inadequate support from health professionals; ignorance of family members in health structure), and (4) social challenges of cancer (economic burden; taboo of cancer). In conclusion, nurses need to provide individualized support and counseling that address the sources of burden. This highlights the benefit of training health care professionals to provide culturally sensitive support based on family caregivers' needs and circumstances.
    • Quality Assurance Standards A synthesis of quality standards across partner countries. Summary report.

      Dodd, Vanessa; Hagaseth Haug, Erik; Hooley, Tristram; Neary, Siobhan; International Centre for Guidance Studies (iCeGS) (University of Derby, 2019-05)
      This report presents an analysis of a range of transnational and national quality assurance (QA) practices in career guidance within partner countries, 21 quality activities were assessed. The report focuses on identifying the variety of different approaches, the factors that enable these approaches and the impact of these different approaches.
    • Quality Assurance Standards : A synthesis of quality standards across partner countries.

      Dodd, Vanessa; Hooley, Tristram; Haug, E.H.; Neary, Siobhan; International Centre for Guidance Studies (iCeGS) (University of Derby, 2019-05)
      This report presents an analysis of a range of transnational and national quality assurance (QA) practices in career guidance within partner countries, 21 quality activities were assessed. The report focuses on identifying the variety of different approaches, the factors that enable these approaches and the impact of these different approaches.
    • Quality improvement projects in catheterization laboratories: a systematic literature review

      Martinez, Cecilia Rodriguez; Gonzalez Aleu, Fernando; Granda, Edgar M.A.; Nadeem, Simon Peter; University of Derby (IEOM Society, 2020-03-10)
      A catheterization laboratory (Cath lab) is a place that has high-tech equipment that mainly allows the diagnosis and treatment of cardiovascular diseases, which represents 31% of all global deaths, according to the World Health Organization. (WHO, 2019) In an attempt to minimize process inefficiencies in Cath Lab, these organizations have been using quality improvement projects such as Six Sigma, Lean Six Sigma, Kaizen events (rapid improvement events), general quality improvement projects (plan-do-check-act) and others. However, there is a lack of publications synthesizing the literature available in this research field (quality improvement project). Therefore, this paper aim is to assess the published literature relating quality improvement projects in Cath labs in three dimensions: publication characteristics, author characteristics, and content characteristics. To achieve the purpose of this research, a systematic literature review (SLR) will be conducted to obtain the most relevant papers from three platforms: EBSCOhost, ProQuest, and Scopus.
    • Quality of fingerprint radiomaps for positioning systems

      Kanaris, Loizos; Kokkinis, Akis; Liotta, Antonio; Stavrou, Stavros (IEEE, 2017)
    • Quantification of bowling workload and changes in cognitive function in elite fast bowlers in training compared with twenty20 cricket.

      Tallent, Jamie; Higgins, Matthew F.; Parker, Nick; Waldron, Mark; Bradford, Eoin; Keenan, James; O'Neill, Barry V.; St. Mary's University; University of Derby; Brighton and Hove Albion Football Club; et al. (Edizioni Minerva Medica, 2017-11-07)
      BACKGROUND:Bowling overs are the primary recorded measure for workloads in cricket for youth through to professionals. However, the validity of this measure has never been tested. Additionally, despite the cognitive component of cricket being suggested to be very high, changes in psychomotor processing speed has again not been explored. METHODS:Eight professional English county cricket bowlers participated in the study. Participants wore global positioning systems with a tri-axial accelerometer during a Twenty20 match and training. Bowling overs were expressed relative to external forces. Additionally, cognitive function (as measured by psychomotor speed) was assessed pre and post Twenty20 game and training. RESULTS:When expressed relative to high intensity running distance or external forces from the tri-axial accelerometer, the cost of each over (6 deliveries) was over 100% higher in a Twenty20 game compared to training. Psychomotor speed was unchanged although error within the cognitive task increased post Twenty20 (391 ± 82 to 547 to 104 ms) and training (414 ± 110 to 561 to 238 ms). This data suggests that reaction time is unchanged from cricket but the chance of making the correct decision is increased. CONCLUSIONS:Movements in fielding should be quantified or bowling workloads adjusted to account for the high intensity fielding associated with Twenty20 cricket. Cognitive function was impaired following bowling, suggesting practitioners may also monitor psychomotor changes when assessing fatigue and allow appropriate time to mentally recover.
    • Quantification of carbon particulates produced under open liquid pool and prevaporised flame conditions: Waste cooking oil biodiesel and diesel blends

      Chong, Cheng Tung; Tian, Bo; Jo-Han, Ng; Fan, Luming; Wong, Kang Yao; Hochgreb, Simone; Shanghai Jiao Tong University; University of Derby; University of Southampton Malaysia; University of Cambridge (Elsevier, 2020-03-13)
      The soot volume fraction (SVF) of waste cooking oil (WCO) biodiesel and blends was quantified and compared under the same total carbon flow rate via two experimental setups, namely prevaporised diffusion jet flames and pool flames using extinction calibrated laser induced-incandescence (LII). The spatial SVF distribution shows that for diesel-rich fuels, soot formation peaks near the flame and is convected downstream, whereas biodiesel flames show a more evenly distributed SVF at the flame center region. An increase in biodiesel fraction in diesel results in a reduced propensity for soot, as evident in both pool and vapour flames. Comparison of the radial profiles of SVF along the centerline shows broader SVF profiles for pool flames, reflecting the longer residence times for soot diffusion and growth compared to vapour flames, which reflected the lower mass flux for the pool burner. The total soot produced from pool flames was found to be higher than vapour flame by a factor of two for the same fuel mass consumption rate. WCO biodiesel exhibited the lowest total SVF value regardless of flame type owing to the combined effects of lack of aromatic compounds and fuel chemistry. The soot primary particle sizes produced by WCO biodiesel show lower mean diameter values by a factor of approximately 1.5 compared to diesel-produced soot. The pool flames produced carbon particulates of larger mean diameter by around 22% and 8% for diesel and WCO biodiesel, respectively, relative to the counterpart vapour flames, as a result of extended soot surface growth period.
    • Quantifying bioalbedo: a new physically based model and discussion of empirical methods for characterising biological influence on ice and snow albedo.

      Cook, J. M.; Hodson, Andrew J.; Flanner, Mark; Gardner, Alex; Tedstone, Andrew; Williamson, Christopher; Irvine-Fynn, Tristram D. L.; Nilsson, Johan; Bryant, Robert; Tranter, Martyn; et al. (Copernicus Publications, 2017-11-17)
      The darkening effects of biological impurities on ice and snow have been recognised as a control on the surface energy balance of terrestrial snow, sea ice, glaciers and ice sheets. With a heightened interest in understanding the impacts of a changing climate on snow and ice processes, quantifying the impact of biological impurities on ice and snow albedo (bioalbedo) and its evolution through time is a rapidly growing field of research. However, rigorous quantification of bioalbedo has remained elusive because of difficulties in isolating the biological contribution to ice albedo from that of inorganic impurities and the variable optical properties of the ice itself. For this reason, isolation of the biological signature in reflectance data obtained from aerial/orbital platforms has not been achieved, even when ground-based biological measurements have been available. This paper provides the cell-specific optical properties that are required to model the spectral signatures and broadband darkening of ice. Applying radiative transfer theory, these properties provide the physical basis needed to link biological and glaciological ground measurements with remotely sensed reflectance data. Using these new capabilities we confirm that biological impurities can influence ice albedo, then we identify 10 challenges to the measurement of bioalbedo in the field with the aim of improving future experimental designs to better quantify bioalbedo feedbacks. These challenges are (1) ambiguity in terminology, (2) characterising snow or ice optical properties, (3) characterising solar irradiance, (4) determining optical properties of cells, (5) measuring biomass, (6) characterising vertical distribution of cells, (7) characterising abiotic impurities, (8) surface anisotropy, (9) measuring indirect albedo feedbacks, and (10) measurement and instrument configurations. This paper aims to provide a broad audience of glaciologists and biologists with an overview of radiative transfer and albedo that could support future experimental design.
    • Quantifying individual feeding variability: implications for mollusc feeding experiments

      Hanley, M. E.; Bulling, Mark T.; Fenner, M. (2013-05-24)
      1. In order to quantify the level of variability in seedling consumption displayed by individual molluscs, we placed one snail ( Helix aspersa ) in each of 51 trays containing (7-day-old) Taraxacum officinale seedlings for 7 days. 2. Initially, individual snails displayed considerable variability in their consumption of seedlings; however, this variability declined with time. The consumption of seedlings was not related to individual snail mass. 3. A second grazing experiment, using five different snail densities in similar experi- mental conditions to the first, showed that increasing snail number reduced variability within treatment groups. 4. A computer simulation, based on data from the first experiment correctly predicted the basic form of the decline in feeding variability with increasing snail density found in the second. Post hoc changes to the model, based on empirical analysis of the second experiment to account for mutual interference, reduced discrepancies between empirical and model results. 5. This study highlights the consequences that individual feeding behaviour has on feeding trials with molluscs, and provides a simple method by which this variability can be quantified and accommodated within experimental design.
    • Quantitative analysis of qualitative information from interviews: a systematic literature review

      Fakis, Apostolos; Hilliam, Rachel; Stoneley, Helen; Townend, Michael; University of Derby (2013-07-05)
      A systematic literature review was conducted on mixed methods area. Objectives: The overall aim was to explore how qualitative information from interviews has been analyzed using quantitative methods. Methods: A contemporary review was undertaken and based on a predefined protocol. The references were identified using inclusion and exclusion criteria and specific key terms in 11 search databases. Results: Evidence was synthesized from 14 references that included the methods used for quantifying qualitative information, analyzing it statistically and the rationale behind this. Gaps in the existing literature and recommendations for future research were identified. Conclusions: This review highlights the need for a new mixed method based on advanced statistical modeling method that will explore complex relationships arising from qualitative information.