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651.
652.
采用数理统计等方法对伦敦奥运会女子跆拳道赛事的76场比赛录像进行统计分析。研究表明:世界优秀跆拳道运动员在比赛中主要采用4种技术动作,其中横踢仍然是核心技术和比赛得分的主要手段,其使用率占80%;运动员在能力均衡的情况下,正确的分配体能、合理运用技术就显得至关重要;跆拳道运动员防守意识有待提高。分析结果有利于了解国际赛事中跆拳道运动技战术发展趋势,使我国跆拳道有效性的训练更具有针对性。 相似文献
653.
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
654.
655.
饶尚宽 《新疆师范大学学报(哲学社会科学版)》2002,23(3):96-101
文章就《(?)梁传》对词义的训释进行了初步探讨,指出其中分为“借释词以阐发经义”“释名物以解说经义”和“解词义以贯通经义”三种类型,并就其内容特点进行分析,从而为汉语史和训诂学史的研究提供重要的资料。 相似文献
656.
Photon Rao 《Resonance》1997,2(5):69-72
Reichardt’s dye A, shows spectacular solvatochromism having solutions coloured red in methanol, violet in ethanol, blue in
isopropyl alcohol, green in acetone and greenish-yellow in anisole. 相似文献
657.
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
658.
659.
Data from two bibliographic databases i.e. COMPENDEX and INSPEC have been collected on the broad subject software and related topics. The titles of the journals were extracted from the database. The impact factors of the titles were also collected in order to study the distribution of impact factors. An attempt has been made to identify a suitable model to describe a distribution of impact factors. It has been observed that a Gamma distribution fits the observed data very well with one of the parameters as mean of the distribution and other parameter as 1. Further it has been observed that the researchers are now publishing their articles in high impact factor journals. 相似文献
660.
A. Madhusudhana Rao A. R. Bitla E. P. Reddy V. Sivakumar P. V. L. N. Srinivasa Rao 《Indian journal of clinical biochemistry : IJCB》2010,25(1):47-50
The present study was carried out to explore the altered lipid, lipoprotein and apoprotein abnormalities along with lipoprotein
(a) in chronic kidney disease patients with stage I to V which were further divided into group 1 (stage I and II), group 2
(stage III and IV) and group 3 (stage V). 50 chronic kidney disease patients with stage I to V and 20 healthy normal subjects
as controls were recruited for this study. Among the various parameters tested triglyceride levels were high in group 1 and
2, whereas VLDL cholesterol, Lp (a) and apo B levels were significantly high in all the groups when compared to controls (P<0.05).
However, LDL cholesterol level was significantly low in group 3 only as compared to control group (P<0.05). Apoprotein AI
values also showed significant decrease in all groups as compared to controls (P<0.05). Though total cholesterol levels in
group 1 and LDL levels in group 1 and 2 were higher than controls, but the values attained not statistically significant (P>0.05).
In conclusion high levels of VLDL cholesterol, Lp (a), apo B and low levels of apoprotein AI as reported in this study are
the major lipid disorders in the development of cardiovascular complications at all the stages in these patients. 相似文献