399 research outputs found

    Att möta användarens krav vid utformningen av en applikation för en central bildhantering

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    Denna uppsats behandlade de ur mjukvarukvalitetssynpunkt viktigaste faktorerna vid utvecklandet av en bilddatabas. Syftet med uppsatsen var att identifiera vilka kriterier man som utvecklare bör beakta. Som modell för mjukvarukvalitet användes en tolkning av ISO’s standard för mjukvarukvalitet. En fokusering skedde mot tre aspekter inom begreppet mjukvarukvalitet, Bildsäkerhet, Bildåtkomst samt Bildkvalitet. Som grund för vår konceptuella del stod framförallt två personers verk: Howard Besser och Nigel Bevan. En studie genomfördes på Adera Kommunikation AB för att få ett företags tankar och idéer kring ämnet. Denna studie bestod av en intervju med en av deras tekniska projektledare. Slutsatsen visade att beroende på inom vilken typ av organisation applikationen är tänkt att användas av har kriterierna olika betydelse. Det framkom att Bildåtkomst var den mest centrala aspekten, medans Bildsäkerheten var av mindre vikt.Det framkom även att Bildkvaliteteten bör hålla en nivå som tillgodoser användarna med de högsta kraven för attapplikationen skall anses vara kvalitativ

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    F-term uplifting via consistent D-terms

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    The issue of fine-tuning necessary to achieve satisfactory degree of hierarchy between moduli masses, the gravitino mass and the scale of the cosmological constant has been revisited in the context of supergravities with consistent D-terms. We have studied (extended) racetrack models where supersymmetry breaking and moduli stabilisation cannot be separated from each other. We show that even in such cases the realistic hierarchy can be achieved on the expense of a single fine-tuning. The presence of two condensates changes the role of the constant term in the superpotential, W_0, and solutions with small vacuum energy and large gravitino mass can be found even for very small values of W_0. Models where D-terms are allowed to vanish at finite vevs of moduli fields - denoted `cancellable' D-terms - and the ones where D-terms may vanish only at infinite vevs of some moduli - denoted `non-cancellable' - differ markedly in their properties. It turns out that the tuning with respect to the Planck scale required in the case of cancellable D-terms is much weaker than in the case of non-cancellable ones. We have shown that, against intuition, a vanishing D-term can trigger F-term uplifting of the vacuum energy due to the stringent constraint it imposes on vacuum expectation values of charged fields. Finally we note that our models only rely on two dimensionful parameters: M_P and W_0.Comment: 10 pages, 2 figures, plain Latex, references adde

    Sheep Dairy Farming in Cumbria & South & West Scotland: Potential for a powder plant

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    Milking ewes is a common practice in Europe but there is not a tradition of milking sheep in the UK.The aim of this report is to look at the possibility of a powder plant as a way of increasing the dairy ewe production in the Digital Dairy Chain (DDC) area and wider UK

    Sheep Dairy Farming in Cumbria & South & West Scotland: Potential for a powder plant

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    Milking ewes is a common practice in Europe but there is not a tradition of milking sheep in the UK.The aim of this report is to look at the possibility of a powder plant as a way of increasing the dairy ewe production in the Digital Dairy Chain (DDC) area and wider UK

    Concussion injury management, perception, and knowledge in amateur field hockey

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    Background: Field hockey has a high risk for sports-related concussion (SRC) injuries due to the speed and intensity of the game, current rules, field surfaces and equipment composition. Head injuries are the second most common reported injury and up to 75% of SRCs go unreported or undetected. This increases the subsequent injury risk, long term health consequences and prolonged injury recovery. Objectives: This study aimed to examine the prevalence of SRC in hockey players within the Southern Gauteng Hockey Association (SGHA) premier league. Concussion knowledge and attitudes of hockey players, coaches, umpires, and officials were also investigated. Methods: A partially mixed sequential dominant status design (QUANT–qual) was used, divided into two phases. In Phase One hockey players, coaches, umpires, and technical officials (n=119) completed a modified RoCKAS-ST questionnaire. In Phase Two, a focus group discussion with umpires (n=3) and interviews with coaches (n=3) were conducted. Results: Injuries to the shoulder, neck, head, and face were reported from stick use (n=98); ball use (n=102) and collisions (n=187). Only 19% of hockey players were diagnosed with SRC, indicating that many of these injuries were undetected or not reported. Responses from the focus group discussion and interviews indicated that coaches, umpires, and officials felt they had insufficient knowledge of SRC. Conclusion: The recognition and management of on-field injuries require improvement to enhance the injury detection system

    Assessing the needs of coaches in developing a coach education framework

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    The establishment of a global framework recognising coaching competencies and qualifications is part of the International Council for Coaching Excellence key objectives for the period 2009-2015. It is partly for this reason that the South African Sports Confederation and Olympic Committee (SASCOC) has developed a framework for Long-Term Coach Development in order to identify, recruit, support and provide recognition to coaches (SASCOC, 2011). As part of a study exploring the impact of coach education on coaching practice, a national survey of lifesaving coaches was conducted (n = 120). This was done using the Survey Monkey® internet tool and targeted all coaches and administrators listed on the Lifesaving South Africa’s database. Survey questions focused on obtaining a demographic profile, coaching experience and the foci of athlete training. Questions also sought to gather information on the coach education process, its content and the way it was assessed. Results from the survey indicated that 81% of respondents are volunteer coaches with an age range between 18 and 60 years. 50% of sampled coaches had been coaching lifesaving for between two and five years, mostly at the club level (96%). Coaches were asked where they had learnt to coach, and the most common responses were drawing from their own sporting experiences, watching other coaches and being self-taught. The implementation of a coach education programme through Lifesaving South Africa was well received, although only 54% felt that certification should be mandatory. It was through this preliminary data that an understanding of what the coaches’ require in a coach education programme was gained

    A re-evaluation of the extraterrestrial origin of the Carolina Bays / Occasional publications of the Department of Geography, paper no. 9

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    Cover title.Bibliography: p. 44-46

    Match loads of university rugby union players between the 2016 and 2018 Varsity Cup competitions

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    Background: Rugby union is a popular and continuously growing sport globally. With the advance of technology, practices have been implemented to quantify the match running demands of rugby union players. The aim of this study was to analyse the match loads of rugby union players between the 2016 and 2018 Varsity Cup competitions. Methods: The sample consisted of 562 match observations of male university rugby union players competing in the Varsity Cup tournaments. Results: The backline players ran significantly longer total distances (5105 m; p = 0.001; ES = 0.49); have greater high- speed running (496 m; p = 0.001; ES = 1.03), very high-speed running (260 m; p = 0.001; ES = 1.50) and sprint distances (117 m; p = 0.001; ES = 1.32) than forward players. Backline players also accumulated a high number of metres per minute (238 ± 94; p = 0.001; ES = 0.46), total Player Load (488 ± 203; p = 0.001; ES = 0.31), RHIE (9 ± 8; p = 0.001; ES = 0.75) and number of accelerations (4 ± 5; p = 0.001; ES = 0.49). Conclusion: These findings may assist coaches to develop player position specific training programmes to meet the physical demands of rugby. Keywords: rugby union, match loads, physical demands, positio

    The Next-to-Minimal Supersymmetric Standard Model

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    We review the theoretical and phenomenological aspects of the Next-to-Minimal Supersymmetric Standard Model: the Higgs sector including radiative corrections and the 2-loop beta-functions for all parameters of the general NMSSM; the tadpole and domain wall problems, baryogenesis; NMSSM phenomenology at colliders, B physics and dark matter; specific scenarios as the constrained NMSSM, Gauge Mediated Supersymmetry Breaking, U(1)'-extensions, CP and R-parity violation.Comment: 144 pages, 11 figures, corrections in Eqs.(2.2), (2.21), (B.9
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