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661.
篮球选项课技术考核评价方法标准化研究 总被引:1,自引:0,他引:1
本文运用体育测量与评价原理,结合考生在考核过程中的心理特点,选择了原地单手肩上投篮考核项目,对篮球选项课技术考核评价过程中的测试次数与评价方法进行了初步研究。 相似文献
662.
663.
Link mechanisms designed for time-dependent output on the assumption of uniform input velocity will not perform satisfactorily due to fluctuation of input velocity under the actual working conditions. Synthesis, taking the input velocity fluctuations into consideration, is very difficult. Incorporation of a flexible element between the input link and the drive-motor makes the synthesis very easy. Also, a mechanism used as a timing device, for example the one used for actuating a valve at specified timings, is subjected to pulse loading. A slider-crank mechanism subjected to such a pulse loading and flexibly coupled to a drive-motor is synthesized for position coordination in the present paper. A numerical example is included. 相似文献
664.
665.
饶银华 《阜阳师范学院学报(社会科学版)》2002,(3):61-63
科技因素促进了国际关系的形成和发展,对国家对外行为有重要影响,并导致国际格局的变化。科技因素构成了当今国际关系的新内容。 相似文献
666.
中国女子体育发展轨迹与成因探析 总被引:2,自引:0,他引:2
饶远 《上海体育学院学报》1993,17(1):1-7
中国女子体育的发展,经历了曲折缓慢的过程。新中国成立后,中国女子体育的发展突飞猛进,在国际体坛上取得了瞩目的成就。本文从中国女子体育发展的历史轨迹中,探寻其兴衰变化的制约因素及其迅猛发展的原因。 相似文献
667.
The present work identifies a high incidence of oral cancer in south Karnataka. The primary reason for this could be due to
extensive addiction to tobacco alone or tobacco and alcohol in most of these patients. The next in intensity was cancer of
the breast and cervix among the cancer patients surveyed in south Karnataka. Majority of these patients had no specific addiction
and the exact reason for this high incidence remains unclear. Only a small percentage of patients exhibited other types of
organ related cancer. It has been reported that the incidence percentage of diabetes mellitus and cancer in India, parallel
each other. However, we observed a low incidence of diabetes mellitus patients also having cancer in south Karnataka. Though
the exact reason for this remains unclear an attempt has been made here to explain this phenomenon, hypothetically using information
in literature, which suggests a suppression of cellular regenerative activity by sugar and sugar phosphates. Cellular regenerative
activity is well known to be a prerequisite for cancer. 相似文献
668.
Sharon S. N. Ng Nirmala Rao 《Early Years: An International Journal of Research and Development》2008,28(2):159-172
This paper characterizes early mathematics instruction in Hong Kong. The teaching of addition in three pre‐primary and three lower primary schools was observed and nine teachers were interviewed about their beliefs about early mathematics teaching. A child‐centered, play‐based approach was evident but teachers emphasized discipline, diligence and academic success. Observations also revealed practices reflective of both constructivist and instructivist pedagogies. Results from interviews suggest that teachers' traditional cultural beliefs about instruction were challenged by western ideologies introduced in continuing professional development courses and by notions promulgated by the educational reforms. Both consistencies and inconsistencies between teachers' beliefs and practices were identified. Implications of the findings are discussed. 相似文献
669.
P. V. S. Rao 《Resonance》2008,13(5):420-429
To be associated with an important and challenging activity that is being carried out for the first time in the country is
a truly memorable and satisfying, even if somewhat disquieting experience. I was privileged enough to have this opportunity
when I was involved in the design and implementation of India’s first computer. TIFRAC (Tata Institute of Fundamental Research
Automatic Calculator) — so was it named by Jawaharlal Nehru when it was formally commissioned in 1960 — was a truly a unique
computer. Some of the features of this machine are described later in this article. It is also my intention in this article
to convey some of the excitement, adventure and sense of accomplishment that the successful completion of this exercise brought
to the design team. 相似文献
670.
学术自由与学术责任——大学学术发展的价值协调 总被引:2,自引:0,他引:2
学术自由是大学理念中一个最基本的学术价值观,它不仅是学术研究者的一种权利,而且体现为大学内部所特有的独立品格和精神。自17世纪末期近代大学形成以来,学术自由的理念不断强化,内涵不断丰富,逐步成为大学之所以为大学的基础、动力源和基本理念。三百年来,一方面学术自由使大学保持着宽松的研究氛围,传承文明,追求真理;另一方面,在所谓“学术自由”的保护伞下,一些研究人员却暗中接受政府巨额资金,为政府不光彩的行动出谋划策,学术腐败和对学生不负责任的行为也时有发生。对曾经寄予厚望、充满理想色彩的学术圣地——“大学”,人们已颇多… 相似文献