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排序方式: 共有349条查询结果,搜索用时 15 毫秒
61.
Sam Liu Dina Brooks Scott Thomas Gunther Eysenbach Robert Peter Nolan 《Journal of sports sciences》2015,33(10):1001-1006
The primary aim was to examine the criterion and construct validity and test–retest reliability of the Lifesource XL-18 pedometer (A&D Medical, Toronto, ON, Canada) for measuring steps under controlled and free-living activities. The influence of body mass index, waist size and walking speed on the criterion validity of XL-18 was also explored. Forty adults (35–74 years) performed a 6-min walk test in the controlled condition, and the criterion validity of XL-18 was assessed by comparing it to steps counted manually. Thirty-five adults participated in the free-living condition and the construct validity of XL-18 was assessed by comparing it to Yamax SW-200 (YAMAX Health & Sports, Inc., San Antonio, TX, USA). During the controlled condition, XL-18 did not significantly differ from criterion (P > 0.05) and no systematic error was found using Bland–Altman analysis. The accuracy of XL-18 decreased with slower walking speed (P = 0.001). During the free-living condition, Bland–Altman analysis revealed that XL-18 overestimated daily steps by 327 ± 118 than Yamax (P = 0.004). However, the absolute percent error (APE) (6.5 ± 0.58%) was still within an acceptable range. XL-18 did not differ statistically between pant pockets. XL-18 is suitable for measuring steps in controlled and free-living conditions. However, caution may be required when interpreting the steps recorded under slower speeds and free-living conditions. 相似文献
62.
ABSTRACTThe research focuses on the complexities associated with contemporary rural primary school leadership. The paper draws on in-depth ethnographic research undertaken in two contrasting English rural primary schools and their surrounding community over a period of three years and in particular the experiences and perspectives of the two head teachers from these schools. The paper is conceptually informed by the work of Bourdieu [1984. Distinction: A Social Critique of the Judgement of Taste. London: Routledge and Kegan Paul] and his work around field, habitus and capital as a means of understanding practice. The paper contends that as the neo-liberal economic field increasingly contaminates the field of schooling so a contextual understanding of the complex and shifting social space which a head teacher occupies, including their habitus and the capital they deploy, is of central importance to understanding practice. 相似文献
63.
Sam Gordon 《海外英语》2011,(3):43-43
给小费?这在中国似乎不必。对于小费,各国有各国的讲究。在日本,如果给小费的话,会被认为是非常不礼貌的;而在美国,如果不给小费。服务员也许会追到街上问你要。 相似文献
64.
65.
Why young elite athletes fear failure: consequences of failure 总被引:1,自引:0,他引:1
Fear of failure can have negative effects on children in achievement settings, affecting many aspects of their lives. Perceiving the consequences of failure to be aversive provides the basis for fear of failure, and the anticipation of a threatening outcome elicits fear. Problems attributed to fear of failure in achievement settings are prevalent. Sport is a popular and significant achievement domain for children and adolescents and there is a lack of research on fear of failure in sport among this age group. Therefore, the aim of the present study was to investigate fear of failure in the sport domain among young elite athletes, and to explore their perceptions of the consequences of failure. Interviews were conducted individually with nine athletes aged 14 - 17 years (5 males, 4 females). Analysis identified and organized perceived consequences of failure into themes and categories. Results revealed that the most commonly perceived aversive consequences of failure were diminished perception of self, no sense of achievement, and the emotional cost of failure. These findings are consistent with those reported in adult population, suggesting the potential for generalizing existing results to young elite athletes. 相似文献
66.
Sam Winter 《教育心理学》1982,2(3-4):185-195
The upsurge in the use of behavioural change techniques with children in education and residential settings has not always involved an equally strong commitment to behavioural measurement (by which is meant quantitative data collection relating to latency, duration or, most often, frequency of the target behaviour in question). This paper outlines several advantages, other than effectiveness evaluation, which accrue from behavioural measurement; in relation to (a) deciding whether to change behaviour, (b) deciding the type of intervention required, (c) assessment of caregiver skills and commitment, (d) therapeutic effects, (e) reinforcement, (f) analysis of critical variables and (g) analysis of caregiver attitudes and behaviour. Case examples are included throughout. 相似文献
67.
Lik Sam Chan 《Critical Studies in Media Communication》2016,33(2):139-153
The intricate connection between nation branding efforts and the emotions they evoke has been inadequately addressed in existing branding and international relations literature. I propose a heuristic account that theorizes this relationship. By tracing the branding efforts made by China and the de-branding efforts made by Shen Yun Performing Arts (a troupe established by Falun Gong practitioners), I argue that these “authentic” Chinese cultural presentations elicit certain emotions. The emotional works are different for Chinese domestic audiences and for international audiences. I propose a duplex model to account for the emotional processes in these two groups of audiences. Four operating emotions—pride, guilt, admiration, and anger—solidify into various political attitudes toward China. Finally, I discuss the contributions of this duplex model and its further complications. 相似文献
68.
Sam Sims 《British Educational Research Journal》2020,46(2):301-320
Teacher shortages are a recurring problem in publicly funded schools, in part because of poor retention. Working conditions in schools are an important predictor of teacher job satisfaction and retention, yet research has so far made limited headway in identifying the specific aspects of the working environment which matter. This research uses representative data on state secondary school teachers in England in 2013 to derive an unusually rich set of working conditions variables. Regression analysis is used to model the relationships between working conditions, teacher job satisfaction and turnover intentions. The results show strong associations with the nature of school leadership, whether teachers have received training in the specific subjects they are assigned to teach and scope for career progression within the school. These results are robust to checks for common source bias. The study identifies ways in which schools can improve retention. 相似文献
69.
70.
This study investigated whether or not an increase in secondary science teacher knowledge about evolution and the nature of
science gained from completing a graduate-level evolution course was associated with greater preference for the teaching of
evolution in schools. Forty-four precertified secondary biology teachers participated in a 14-week intervention designed to
address documented misconceptions identified by a precourse instrument. The course produced statistically significant gains
in teacher knowledge of evolution and the nature of science and a significant decrease in misconceptions about evolution and
natural selection. Nevertheless, teachers’ postcourse preference positions remained unchanged; the majority of science teachers
still preferred that antievolutionary ideas be taught in school. 相似文献