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优秀男子三级跳远运动员助跑速度的研究 总被引：2，自引：0，他引：2
本文研究结果表明 :三级跳远运动员的助跑速度与成绩呈高度相关关系 ,助跑速度越快则成绩越好 ;助跑速度的利用率和水平速度的损失率是衡量优秀三级跳远运动员技术水平的重要指标 ;高速助跑、低水平速度的损失率是“跑跳型”技术风格的主要特征 ,也是现代三级跳远运动技术发展的趋势。 相似文献
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杨玉敏 《鞍山师范学院学报》2007,9(2):60-63
三重积分的计算是数学分析中的难点,结合教学本文较全面地给出了三重积分计算中的若干处理方法,对学习者有一定的指导意义. 相似文献
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为提高企业间团队知识转化效率以及提升供应链整体竞争力,厘清供应链企业间合作团队知识转化的内涵和演化机理,基于供应链跨企业合作团队实际特点,改进、补充SECI模型和三螺旋模型,建立供应链企业间团队知识转化概念模型,分析供应链企业间团队知识转化过程的交互机制;根据复杂适应系统理论思想,运用多主体建模与仿真方法建立起供应链企业间团队知识转化演化模型,借助NetLogo仿真平台对知识转化的演化过程进行仿真实验。仿真实验结果表明,所建立的模型能有效反映供应链企业间团队知识转化的作用过程和演化机理,其中知识共享能力、知识吸收能力以及企业重视程度对知识转化效果具有显著影响;此外,改变各参与主体的属性水平会对仿真结果产生不同程度的影响。… 相似文献
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通过对体育系女生三级跳远的一些技术阶段的成绩的测试，结合有关文献资料，初步探讨了体育系女生三级跳远技术的特点及其形成原因，为女子三级跳远的教学和训练提供了理论依据和统计学参数。 相似文献
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对我国男子三级跳远优秀运动员专项素质的比较分析 总被引：1，自引：0，他引：1
张良力 《首都体育学院学报》2006,18(6):84-86,100
通过文献资料法、问卷调查法、访谈法以及训练跟踪法等科研方法，对我国老一代和新一代三级跳远运动员身体素质进行了比较分析，通过对比我们发现，老一代运动员的身体素质明显高于新一代运动员，尤其在力量素质和速度素质方面有较大的差距。通过对老一代运动员和新一代运动员有关问题进行调查研究、比较分析，找出不足，为提高我国男子三级跳远的运动水平服务。 相似文献
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通过对三级跳远运动员１３项指标与专项成绩的相关分析，建立了三级跳远运动员专项与１３项指标的数学模式。教练员可根据这些数学模式进行专项成绩预测，运动技术诊断和指导科学化训练，同时可使运动员了解自身的体能状况以及增长变化情况，提高运动员训练的针对性。 相似文献
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Privatization in higher education is usually understood either as the surge of private institutions or as universities’ growing reliance on private sources of funding or otherwise operating more like firms. Joining the growing literature on university entrepreneurship, this is a case study on the less examined problem of entrepreneurial universities in developing countries. In a period of roughly 15 years, the Pontificia Universidad Católica of Chile, founded in 1888, turned itself from a mostly teaching institution to a research-oriented university, responsible for one-fourth of the Chile’s mainstream scientific output and 40% of all Ph.D.s awarded nationally. Yet, public funding represents today only 17% of its revenues, down from almost 90% in 1972. How such academic development could have occurred as the State withdrew and the market took hold of Chilean higher education after the reforms introduced by the military rule of Augusto Pinochet (1973–1990) is the theme of this work. Universidad Católica’s policies and strategies are described, and the factors contributing to its success, together with their limitations, identified. The case suggests that orientation to the market can be more a means for survival and growth under the pressure of privatization, than a result of a ‘Triple Helix’ strategy of universities, government and industry to generate innovation out of academic knowledge. Secondly, while in the industrialized world, higher education entrepreneurship is associated with knowledge production for economic development (‘Mode 2’), entrepreneurial universities in the context of developing countries may just be finding their way to the academic, disciplinary mode of research. 相似文献
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Longitudinal trends in networks of university-industry-government relations in South Korea: The role of programmatic incentives 总被引：1，自引：0，他引：1
This study examines the longitudinal trend of systemness in networked research relations in South Korea using a triple helix (TH) indicator of university-industry-government (UIG) relations. The data were harvested from the Science Citation Index (SCI) and its counterparts in the social sciences (SSCI) and the arts and humanities (A&HCI). The total number of Korean SCI publications has grown rapidly since 1965. However, the TH indicator shows that the network dynamics have varied considerably according to the research policies of the national government. The collaboration patterns, as measured by co-authorship relations in the SCI noticeably increased, with some variation, from the mid-1970s to the mid-1990s. However, inter-institutional collaboration in the first decade of the 21st century was negatively influenced by the new national science and technology (S&T) research policies that evaluated domestic scientists and research groups based on their international publication numbers rather than on the level of cooperation among academic, private, and public domains. The results reveal that Korea has failed to boost its national research capacity by neglecting the network effects in science, technology, and industry. 相似文献
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陈克瀛 《温州大学学报(社会科学版)》2009,(6):1-7
设{a,b,c}是一组b为偶数的本原商高数．证明了：当a是形如16（3k＋1）＋1的素数时,Terai猜想对于几乎所有这样的素数都成立,特别地,当a=17（b=144,c=145）时,Terai猜想成立;当a是形如16（8kl＋5（k＋l）＋3）＋1的素数时,Terai猜想成立． 相似文献