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961.
962.
The Isles of Wonder, the 2012 London Olympic Games Opening Ceremony, was viewed by a record global audience either live or through a range of electronic, social, and print media. British newspaper discourses provided reflection of the mega-sporting event as a ‘second-order’ construction, which gave readers an opportunity to reflexively decide what Britishness had come to represent. Theoretical insights about British identity were drawn from Anderson’s (1983) concept of the nation as an ‘imagined community’, Tajfel and Turner’s (1986) social identity theory, and Edmunds and Turner’s (2001) juxtaposition of benign and malign nationalism. Our qualitative textual analysis revealed that although at times complex, contested, and contradictory, the narratives generally linked the internationalism of the Olympics with a progressive, benign version of Britishness that was still ‘great’. Underpinned by the aspirational New Jerusalem theme, the narratives generally acclaimed the Isles of Wonder as Britain’s first gold medal of the Games. 相似文献
963.
964.
This study examines the validity of the Marshall Sitting Questionnaire (MSQ) in people with multiple sclerosis (MS) and presents a prediction model to improve the accuracy of the MSQ estimates. Participants (n = 63 [15M and 48F], age: 56.6 ± 7.3 years) wore an accelerometer on the hip for a 7-day period and completed the MSQ. Sedentary behaviour (SB) estimates were computed as min/day for both the MSQ and accelerometer. Associations between the two methods were examined using the Pearson correlation and agreement was assessed using a Bland-Altman plot. A linear prediction model was developed to improve the accuracy of the MSQ estimates using a selection of predictor variables routinely collected in MS research. There was a moderate correlation between MSQ and accelerometer SB estimates (r = 0.34, p < 0.01). The Bland-Altman plot indicated that the MSQ overestimated SB (mean bias: 80.54 min/day, 95% limits of agreement: ?410.5 to 571.5 min/day). The prediction model improved the MSQ estimates by 39% and virtually eliminated measurement bias (mean bias:-0.21 min/day; 95% limits of agreement:-109.8 to 109.4 min/day). The results indicate preliminary evidence for the validity of the MSQ in people with MS, and support the application of an alternative prediction model to improve the accuracy of the MSQ estimates.
Abbreviations: SB = sedentary behaviour; MS = multiple sclerosis; MSQ = Marshall Sitting Questionnaire; PA = physical activity; EDSS = Expanded Disability Status Scale; LPA = light physical activity; MVPA = moderate-to-vigorous physical activity; GLTEQ = Godin Leisure Time Exercise Questionnaire; PDDS = Patient-Determined Disease Steps; RMSE = root mean square error. 相似文献
965.
Edward R. Brooks Amanda C. Benson Aaron S. Fox Lyndell M. Bruce 《Journal of sports sciences》2020,38(13):1488-1495
ABSTRACT Physical movement demands in elite netball match-play have been limited to notational analysis or accelerometer-derived measures, due in part to the indoor environment in which they are played. Commercially available local positioning systems (LPS) using ultra-wideband communication have been designed to bring similar capabilities as global positioning systems (GPS) to indoor environments. This study aims to quantify both spatiotemporal and traditional accelerometer-derived measures, to assess the movement demands of all playing positions, during Australian national netball league matches. Total distance, metreage per minute, acceleration density, acceleration density index, acceleration load, jumps, velocity bands, acceleration bands and PlayerLoad variables have been presented for each position. Mean total distance-covered in match-play differed substantially between positions. Centre position accumulated the highest mean distance (5462.1 ± 169.4 m), whilst the Goal Shooter consistently covered the lowest mean distance (2134 ± 102.6 m). Change of direction relative to movement area was highest for the two most restricted positions based on average acceleration per 10 m covered during match-play (Goal Shooter; 7.21 ± 0.88 m · s ? 2 and Goal Keeper; 6.75 ± 0.37 m · s ? 2, remaining positions; 5.71 ± 0.14 m · s ? 2). The positional profiles outlined in this study can assist skill and conditioning coaches to prescribe training sessions that will optimise the athlete’s physical preparation for the demands of competition. 相似文献
966.
Relatively little is known about the extent of marijuana use and related risk‐taking behavior by college students on historically Black colleges and universities (HBCUs). Undergraduate students (N = 212) from an HBCU in the southern region of the United States completed anonymous questionnaires that assessed their marijuana‐related behaviors and perceptions. Logistic regression analysis revealed risk factor profiles that provide college counselors with greater insight into prevention and treatment on HBCU campuses. 相似文献
967.
运用集合值分析的理论,研究了极大-极小函数的方向导数及其存在性问题;一些有关极大-极小函数方向导数存在的充分条件在文中得到了证明。 相似文献
968.
培养创新型、多层次、专业化的工程科技人才——CDIO工程教育改革的人才理念和培养模式 总被引:8,自引:0,他引:8
高等工程教育在培养工程科技人才,提高中国在工程科技领域的竞争力中发挥着重要的作用。在中国建设创新型国家和走新型工业化道路的背景下,培养大量具有创新能力、多层次和专业化的工程科技人才具有重大的战略意义。本文分析了专业人才的定义、特点和不足,总结出工程科技人才成长的多层次、专业化、社会性、长期性和流动性等培养规律,并以此为理论框架,结合美国麻省理工学院CDIO工程教育模式在知识、技能和实践方面的人才理念,提出了中国在工程科技人才的培养上需要关注的问题和相关建议。我们认为,工程科技人才的培养需要学校、政府和企业全面合作,通过丰富教育资源、优化教育环节、完善教育环境,切实提高高等工程教育的质量和水平,实现人才培养目标。 相似文献
969.
The identification and dissemination of ‘good practice’ has for years been a central part of the Government's strategy for radical change of the education system. ‘Good practice’, however, is no longer good enough, nor is ‘best practice’. The requirement now for post‐compulsory education and training (from which all our examples are taken) is nothing less than ‘excellent practice for all’. This article critically examines these highly significant shifts in the rhetoric of policy, finds them wanting and argues that we need to face up to the complexities involved in deciding not only what is ‘excellent practice’ but also in working through all the stages which would be needed to transmit it throughout the sector. In particular, recent documents from the Quality Improvement Agency and the Learning and Skills Council on the pursuit of excellence are critically appraised. The views of those practitioners who are part of the authors' project in the Economic and Social Research Council's Teaching and Learning Research Programme are also explained in relation to ‘good practice’. The authors attempt to explain the frenetic activity of politicians and policy makers in this sector, and end by moving from critique to construction by considering what can be rescued from the inherently contestable notion of ‘good practice’, and, in doing so, draw heavily on the work of Robin Alexander. 相似文献
970.
Two studies applied self-determination theory (SDT) to investigate the motivation for learning of rural Chinese children. The aim was to test whether findings from studies in western individualist cultures would hold up within a very different, eastern collectivist setting. In the first study, when students' autonomous and controlled motivation for a course were entered simultaneously in a regression analysis, autonomous motivation uniquely positively predicted students' perceptions of interest, competence, and choice in the course, whereas controlled motivation uniquely negatively predicted perceptions of interest and choice. In the second study students' perceptions of instructors' autonomy support during the course predicted changes in autonomous motivation, controlled motivation, and perceived competence. These results were discussed in terms of SDT and culture. 相似文献