排序方式： 共有102条查询结果，搜索用时 15 毫秒
71.
针对中国女运动员在奥运会的优势现象,从项群角度对第27-31届夏季奥运会我国女子冠军比赛成绩比较分析,发现这连续5届奥运会中不同项群的女运动员运动寿命有所不同,技能主导项群的运动员运动寿命长于体能主导项群运动员,且技能主导项群中隔网对抗类运动员运动寿命最长。而在体能主导项群中,速度性项目运动员的运动寿命长于耐力性和快速力量性项目运动员的运动寿命。同时也发现技能主导项群是我国女运动员夺金的主要项群,体能主导项群是我国女运动员夺金的弱势项群;技能主导项群运动员的运动寿命与运动成绩有可能存在正比的关系。 相似文献
72.
通过在石家庄进行的全国田径暨奥运会选拔赛之机，搜集了我国大部分现役优秀女子跳高运动员的专项素质指标，通过文献资料、调查问卷和数理统计法找出对其专项成绩影响较大的几项身体素质指标并进行相关性分析研究。建立运动员专项成绩的预测模型，从而为教练员、运动员控制监督训练效果提供帮助和指导。 相似文献
73.
孙光 《首都体育学院学报》2005,17(2):103-104,125
采用教学实验法，对田径跳跃项目进行技术教学信息反馈实验研究。研究结果表明，在常规的教学条件下应用信息反馈理论进行田径跳跃项目技术教学的效果优于传统教学法。 相似文献
74.
《明史·本纪》中存在月份记录缺失、重要事件被漏记、对自然灾害等一些实情记述过于简略等诸多问题,本文试以《明实录》等档案史料为参照,来探讨《明史·本纪》中的这些不足之处。 相似文献
75.
Sara Hayden 《传播与批判/文化研究》2013,10(2):111-131
The contemporary U.S. debate over abortion has been waged as a battle between <life> and <choice>. The author traces the development of these ideographs, arguing that through their verbal and visual strategies, advocates on both sides of the issue have rendered ideographic meaning concrete. Whereas the fixed definitions have served the cause of <life> well, they have been detrimental for <choice>, leading advocates to seek out ways to revitalize the debate. The 2004 March for Women's Lives was a key event in this larger effort; through it, participants revitalized the abortion debate, bringing renewed flexibility to the ideograph <choice> at the same time it challenged the fixed status, and the veracity, of the ideograph <life>. 相似文献
76.
Alan M. Nevill Greg Atkinson Mike D. Hughes Stephen-Mark Cooper 《Journal of sports sciences》2013,31(10):829-844
In this paper, we identify appropriate statistical methods for analysing categorical differences in discrete variables or 'performance indicators' resulting from performance analysis. The random mechanisms associated with discrete events do not follow a normal distribution; that is, the normal distribution is a continuous not a discrete probability distribution. We propose appropriate statistical methods based on two key discrete probability distributions, the Poisson and binomial distributions. Two approaches are proposed and compared using examples from notational analysis. The first approach is based on the classic chi-square test of significance (both the goodness-of-fit test and the test of independence). The second approach adopts a more contemporary method based on log-linear and logit models fitted using the statistical software GLIM. Provided relatively simple one-way and two-way comparisons in categorical data are required, both of these approaches result in very similar conclusions. However, as soon as more complex models or higher-order comparisons are required, the approach based on log-linear and logit models is shown to be more effective. Indeed, when investigating those factors and categorical differences associated with binomial or binary response variables, such as the proportion of winners when attempting decisive shots in squash or the proportion of goals scored from all shots in association football, logit models become the only realistic method available. By applying log-linear and logit models to discrete events resulting from notational analysis, greater insight into the underlying mechanisms associated with sport performance can be achieved. 相似文献
77.
美国佛罗里达大学体育旅游课程之研究 总被引：3，自引：0，他引：3
赵金岭 《首都体育学院学报》2004,16(4):69-70,76
通过对以美国佛罗里达大学为代表的体育旅游教学与研究比较成熟的数十个大学的体育旅游相关院系的课程设置、教学模式、研究热点等问题进行分析、总结，作者提出了自己的对策建议，旨在为发展中的我国高等院校体育旅游教育专业提供一些有益的参考依据。 相似文献
78.
世界与中国长跑项群最新发展特征之研究 总被引：1，自引：0，他引：1
通过对８０年代世界与中国长跑项群的分析和研究，发现世界长跑运动在这一时期继续保持发展的趋势，但发展速度降低，其动态特征是以奥运会周期规律发展；中国的长跑运动以高于世界数倍的速度发展，其总体水平向世界水平趋近，其动态特征呈现无周期性规律。 相似文献
79.
Blair Thompson Joseph P. Mazer Holly J. Payne Angela M. Jerome E. Gail Kirby William Pfohl 《Qualitative Research Reports in Communication》2017,18(1):8-17
In recent years, the need to study the communication challenges schools face during crises has become essential. The current study included semi-structured interviews with 56 crisis team members from 21 P–12 districts. Participants identified the social media challenges and strategies districts employ during crisis events. Implications for scholars and P–12 administrators are discussed. 相似文献
80.
廖燕玲 《柳州职业技术学院学报》2002,2(1):51-55
本设计制作的软件封面均有动态观感，但又风格各异，算法简明。在教学实践中，利用多媒体演示教学，可以达到变静为动，充分调动学生学习积极性的课堂效果。 相似文献