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BackgroundDespite the well-established health benefits of physical activity (PA) for young people (aged 4–19 years), most do not meet PA guidelines. Policies that support PA in schools may be promising, but their impact on PA behavior is poorly understood. The aim of this systematic review was to ascertain the level and type of evidence reported in the international scientific literature for policies within the school setting that contribute directly or indirectly to increasing PA.MethodsThis systematic review is compliant with Preferred Reporting Items for Systematic Review and Meta-Analysis guidelines. Six databases were searched using key concepts of policy, school, evaluation, and PA. Following title and abstract screening of 2323 studies, 25 progressed to data synthesis. Methodological quality was assessed using standardized tools, and the strength of the evidence of policy impact was described based on pre-determined codes: positive, negative, inconclusive, or untested statistically.ResultsEvidence emerged for 9 policy areas that had a direct or indirect effect on PA within the school setting. These were whole school PA policy, physical education, sport/extracurricular PA, classroom-based PA, active breaks/recess, physical environment, shared use agreements, active school transport, and surveillance. The bulk of the evidence was significantly positive (54%), 27% was inconclusive, 9% was significantly negative, and 11% was untested (due to rounding, some numbers add to 99% or 101%). Frequency of evidence was highest in the primary setting (41%), 34% in the secondary setting, and 24% in primary/secondary combined school settings. By policy area, frequency of evidence was highest for sport/extracurricular PA (35%), 17% for physical education, and 12% for whole school PA policy, with evidence for shared use agreements between schools and local communities rarely reported (2%). Comparing relative strength of evidence, the evidence for shared use agreements, though sparse, was 100% positive, while 60% of the evidence for whole school PA policy, 59% of the evidence for sport/extracurricular PA, 57% of the evidence for physical education, 50% of the evidence for PA in classroom, and 50% of the evidence for active breaks/recess were positive.ConclusionThe current evidence base supports the effectiveness of PA policy actions within the school setting but cautions against a “one-size-fits-all” approach and emphasizes the need to examine policy implementation to maximize translation into practice. Greater clarity regarding terminology, measurement, and methods for evaluation of policy interventions is needed.  相似文献   
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柯布(John B.cobb,Jr.)教授是世界著名过程思想家,建构性后现代主义理论代表人物之一,现任美国过程研究中心创会主任,美国中国后现代发展研究院院长,美国克莱蒙研究生院终身教授。他1952年毕业于芝加哥大学,获哲学博士学位。柯布教授多年来一直从事过程哲学、可持续经济的研究与应用,是一位具有世界影响的学者。已发表著作数十部,代表作有《后现代公共政策》、《建构性后现代哲学的奠基者》、《后现代科学》、《后现代精神》、《为了共同的福祉——面向共同体、环境和可持续未来的经济》等。他应邀于2005年10月28至31日到我校讲学,作了题为“Constructive Postmodernism”的精彩学术报告,以西方哲学话语对建构的后现代主义作了一番梳理,其中不乏独到、精辟之论,受到广大师生的热烈欢迎。这次报告的汉语翻译是我校柏敬泽教授。应师生要求柏教授将全文译成中文并注释,以便读者准确、深入地理解柯布教授的学术报告内容。现把两位学者的共同劳动成果刊登出来,以飨读者,一为庆祝“广西师范大学后现代文化研究中心”的成立,二使更多的人了解柯布教授的学术观点,增进国际、校际之间的学术交流。  相似文献   
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Although many professions practice some type of formal peer review, similar support for increasing the quality and efficiency of instructional design products is largely informal. Most designers develop solutions in professional eommunilies-of-practice, but formal design methodologies ordained by many corporations and instructional design schools do not account for the strong influence these communities have on design decisions. This paper describes an instructional design review process that is modeled after a widely accepted practice among software developers in which peers offer feedback through “structured walkthroughs.” The instructional design review helps the practitioner develop stronger designs more quickly. provides a means to scaffold the novice designer in the vagaries of the workplace, and improves organizational memory. An artifact of a design review as well as guidelines and success factors are presented. The paper provides a summary of a formal peer review structure that has been developed and tested over the past three years at a major corporation.  相似文献   
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