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51.
PROSPECTS - While numerous studies have highlighted the benefits of physical activity on cognitive health, learning, and executive function, maintaining physical activity throughout one’s... 相似文献
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Dean Karnopp 《Journal of The Franklin Institute》1977,303(1):85-98
Although no truly linear physical systems exist, linearized system models are very often used in practice to study the dynamics of real systems and components. Here, the relations between the power and energy in a non-linear physical system and the analogous quantities associated with variables representing small deviations from steady-state values are studied. Sometimes a linearized system is energetically similar to the non-linear system from which it was derived, and in other cases, new types of energy elements appear which were not present in the original system. In order to show the structure of the systems, the results are presented in both equation form and in the form of bond graphs which are unique in exhibiting the power and energy structure of system models. 相似文献
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“人的全面发展”内涵新析 总被引:58,自引:0,他引:58
把握“人的全面发展”内涵的实质,应确立两个理论前提:第一,“人的全面发展”在很大程度上是一种理想、一种追求、一种社会和人生的信念;第二,“人的全面发展”是一个相对的概念,而不具有绝对的意义。同时,“人的全面发展”还应包含四个层面的内涵,即完整发展、和谐发展、多方面发展、自由发展。 相似文献
55.
The problems of response bias in longitudinal studies of college students are examined. An extensive follow-up questionnaire was sent to 1,253 college seniors who had participated in a similar survey as freshman four years earlier. Careful measure of student responsiveness in relation to various techniques designed to increase the proportion of responders (e.g., postcard, telephone contact) were kept.The less responsive groups were significantly different from their more responsive counterparts on nearly a dozen variables representing a wide variety of content areas, including academic achievement, self-concept, alcohol consumption, social deviance, and major choice preferences. Controlling for sex and socioeconomic status served to reduce, but not eliminate, these biases. Overall, the results indicate that researchers cannot account for follow-up nonresponse bias by making statistical adjustments according to data available at initial testing. The results are discussed in light of identifying the reasons for nonresponse, and attempting to develop categories of nonresponders who may be motivated to cooperate by different types of follow-up techniques. 相似文献
56.
课程改革与教学模式转变 总被引:24,自引:0,他引:24
新一轮基础教育课程改革以空前的力度和崭新的面貌令世人关注,要实现课程改革的预期目标,关键在于教学模式的转变。现行教学模式必须从教师本位向学生本位转变,从独白式教学向对话式教学转变,从封闭式向开放式转变,从传递接受式教学向以引导探究为主要特征的多样化教学转变。 相似文献
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Joenathan Dean 《The Urban Review》1984,16(3):123-143
It is argued that the plight of the dependent-poor is likely to get worse as New York City's fiscal crisis is transformed into a service crisis. Considerable emphasis is given to describing the politics of school closings. The school closure issue has profound implications for any attempts to improve the educational lot of urban schools due to the potential relationship between white flight and school closings. The common tendency to close small and old school facilities located in areas where densities are higher (which minimizes transportation costs) results in schools being closed that are predominantly attended by poor and minority students. Policymakers should be able to learn a great deal about cutback management and planning in general through a better understanding of retrenchment policies which school districts throughout the nation have adopted.Presented at the Annual Meeting of the Association of Collegiate Schools of Planning, Washington, D.C., October, 1981. 相似文献
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论自主、合作、探究学习 总被引:45,自引:0,他引:45
新课程提倡自主、合作、探究学习。自主学习的内涵包括主动性、独立性、自控性,在实践中应处理好教师主导性和学生主体性的关系;合作学习的内涵包括交往性、互动性,在实践中应处理好合作与学习、竞争、独立的关系,教师和学生的关系;探究学习的内涵包括问题性、过程性、开放性,在实践中应处理好"形"和"神"的关系。不能把自主、合作、探究学习形式化、绝对化,要学会全面辩证地看待自主、合作、探究学习。 相似文献
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