What can I do with the kid who …?     

Carole Mitchell 《Educational Psychology in Practice》2012,28(4)

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In Brief     

Claudia A. Mitchell  Sandra Weber 《Review of Education, Pedagogy & Cultural Studies》2013,35(3):315-318

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The influence of moment of inertia on baseball/softball bat swing speed   总被引：1，自引：1，他引：0  

Keith?KoenigEmail author  Nan?Davis?Mitchell  Thomas?E.?Hannigan  J.?Keith?Clutter 《Sports Engineering》2004,7(2):105-117

The speed at which a player can swing a bat is central to the games of baseball and softball, determining, to a large extent, the hit speed of the ball. Experimental and analytical studies of bat swing speed were conducted with particular emphasis on the influence of bat moment of inertia on swing speed. Two distinct sets of experiments measured the swing speed of colege baseball and fast-pitch softball players using weighted rods and modified bats. The swing targets included flexible targets, balls on a tee and machine pitched balls. Internal mass alterations provided a range of inertial properties. The average measured speeds, from 22 to 31 m s⁻¹, are consistent with previous studies. Bat speed approximately correlates with the moment of inertia of the bat about a vertical axis of rotation through the batter's body, the speed generally decreasing as this moment of inertia increases. The analytical model assumes pure rotation of the batter/bat system about a vertical axis through the batter's body. Aerodynamic drag of the batter's arms and the bat is included in the model. The independent variable is bat moment of inertia about the rotation axis. There is reasonable agreement between the model and the measured speeds. Detailed differences between the two suggest the importance of additional degrees of freedom in determining swing speed.  相似文献   

Distance learning in post-qualifying nurse education at Northumbria University: implications for the role of the library and library staff     

Bailey P  Cook G  Thynne E  Weatherhead E  Glenn S  Mitchell A 《Health information and libraries journal》2004,21(1):66-69

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Letter from the Editor     

J. Mitchell Miller 《Journal of Criminal Justice Education》2013,24(3):323-324

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We can speak for ourselves: community library services for mentally handicapped people. Report of a workshop at the Kings Fund Centre, 31 October 1984.     

Sally Mitchell 《Health information and libraries journal》1985,2(3):134-136

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Writing for children: A social engagement?     

Gillian Avery  Alec Lea  Joan G Robinson  Roy Brown 《Children‘s Literature in Education》1971,2(3):17-30

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青少年运动缺乏症研究的10大问题     

Avery D. Faigenbaum  Thomas M. Best  James MacDonal  Gregory D. Myer  Andrea Stracciolini 《北京体育大学学报》2015,38(11):50-58

摘要：运动缺乏症（EDD）是一种儿科疾病,特点是中高强度体力活动（MVPA）下降,低于目前的推荐量,也与积极的健康结果（health outcomes）不一致。目前,大多数儿童和青少年符合EDD的诊断标准,因为他们没有达到日常MVPA的最低要求。本文的目的是强调10个与青少年EDD有关的重要研究问题。需要进行重要的研究来更好的定义EDD的临床表现,包括评估体力活动行以确定开始出现EDD的年龄或发育阶段;包括运动技巧和体能的运动起源（kinesiogenesis）的检测;以及对影响青少年MVPA的生活方式因素的评估。关于治疗EDD的干预措施和政策的研究问题,包括评估对卫生保健从业者进行运动医学重要性的教育和训练;确定在临床上识别和治疗EDD青少年的方法的有效性;开发敏感的、特效的、经济的方法以诊断青少年EDD;以及定制方法以促进本病诊疗的医疗保险赔付。如果未来研究不能优化EDD青少年的识别、治疗和管理方案,具有重大影响的生物医学、心理、经济和政治的新的卫生保健问题将会不断出现。  相似文献   

Using a Critical Service-Learning Approach to Facilitate Civic Identity Development     

Tania D. Mitchell 《理论付诸实践》2015,54(1):20-28

This article highlights elements of civic engagement programs that have the rich potential to facilitate civic identity development. Focusing on research with alumni, the study examines 3 civic engagement programs, the approaches of which are guided by critical service-learning. It explores elements of the experiences that alumni name as influential to their learning, development, and present commitments to understand the ways that civic engagement programs based in a critical service-learning approach can encourage them to develop commitments to active citizenship as exemplified by Knefelkamp's (2008) vision of a mature sense of civic identity.  相似文献   

‘If there is a job description I don’t think I’ve read one’: a case study of programme leadership in a UK pre-1992 university     

Rafael Mitchell 《Journal of Further & Higher Education》2015,39(5):713-732

This paper reports on an exploratory study of the role of programme leaders (PLs) in a pre-1992 university, based on interviews with PLs (7) and a survey of taught Masters students (54) in a single school. The study elicits PLs’ activities, most of which might be categorised as managerial and administrative, with leadership required intermittently; the preeminent role involves managing programme quality. The study finds that institutional guidelines overlook important aspects of PLs’ work (such as organising enrichment activities and student advocacy) which affect the quality of provision, and the findings challenge the notion that PLs are engaged in a ‘disesteemed’ service.  相似文献