A grounded theory of positive youth development through sport based on results from a qualitative meta-study

The overall purpose of this study was to create a model of positive youth development (PYD) through sport grounded in the extant qualitative literature. More specifically, the first objective was to review and evaluate qualitative studies of PYD in sport. The second objective was to analyze and synthesize findings from these studies. Following record identification and screening, 63 articles were retained for analysis. Meta-method analysis revealed strengths of studies were the use of multiple data collection and validity techniques, which produced high-quality data. Weaknesses were limited use of ‘named’ methodologies and inadequate reporting of sampling procedures. Philosophical perspectives were rarely reported, and theory was used sparingly. Results of an inductive meta-data analysis produced three categories: PYD climate (adult relationships, peer relationships, and parental involvement), life skills program focus (life skill building activities and transfer activities), and PYD outcomes (in personal, social, and physical domains). A model that distinguishes between implicit and explicit processes to PYD is presented.     

西方国家体育场馆资产并购控制的分析及启示

运用经济学的理论和研究方法,对西方国家体育场馆在资产并购过程中的申报制度和并购前期的深入调查方法,以及部分国家在工作中存在的问题和采取制定并购指南的对策方法等进行了分析.研究表明,我国的体育场馆管理改革必须借鉴西方国家的成功经验,建立符合中国管理体制的并购指南,结合当前社会发展的实际情况,确定合适的经济目标和社会有效竞争标准,寻求公共机制与市场机制的有机结合,探索出符合中国特色的场馆管理新道路.     

Theory for incompressible fluid turbulence

The functional integral representation for the space-time Hopf characteristic functional associated with boundary-free incompressible fluid turbulence is evaluated accurately to order R^-2, where R is the dimensionless Reynolds number in the theory. This work extends the results obtained previously for C-dominant turbulence to the regime of experimentally accessible large Reynolds numbers. We obtain a characteristic functional of non-Gaussian form as an asymptotically exact solution to the theory for large values of R. Two-point and three-point velocity correlation tensors of physical interest are derived from the characteristic functional.