再论体育教学的"主导"与"主体"     

杨俊茹  陈雁飞  陈海波 《上海体育学院学报》2006,30(2):88-91

采用文献资料等研究方法,再次对体育教学中的“主导”和“主体”进行探讨。分析了体育教师的主导性、学生学习的主体性及体育学习中主导性与主体性的关系。认为:教师的主导性和学生的主体性相辅相成,在体育教学中要通过强化教师的主导性调动学生的主体性,将学生的主体性与教师的主导性有机结合。  相似文献   

传统体育对绝经女性骨密度的影响   总被引：25，自引：1，他引：24  

周勇 《北京体育大学学报》2004,27(3):354-355

为了探讨传统体育锻炼对绝经女性骨密度的影响.将60名绝经女性,随机分为非体育锻炼组和跳绳、木兰拳、太极拳套路及太极推手等4个运动组,经10个月的实验.结果表明,非锻炼组骨量丢失,骨密度下降,4个运动组的骨密度均增加,并且太极推手组所测各指标及跳绳组桡、尺骨骨密度增加得更明显;经组间比较,太极推手组优于跳绳组(P<0.05),跳绳组优于木兰拳或太极拳套路组(P<0.05).结论:传统体育跳绳、木兰拳及太极拳运动对绝经女性骨密度的影响是积极的,是绝经女性抵抗骨量丢失,促进骨密度增大的有效运动,并且太极推手对骨量增加更全面,增大骨密度更有效.  相似文献   

20世纪中国竞技体育启示录——悉尼奥运会有感   总被引：5，自引：0，他引：5  

徐本力 《成都体育学院学报》2001,27(4):51-54

回顾50年来我国竞技体育发展的历程和中国奥运兵团在悉尼奥运会上的出色表现,就优势项目的兴衰、中华体育精神、马家军现象、海外兵团、中国足球职业化等问题所引发的思考进行论述.  相似文献   

排球正面上手发球技术教法研究   总被引：3，自引：0，他引：3  

许明荣  姚小玲 《体育科技》2001,22(1):15-17

在对排球正面上手发球技术教学难点及其成因分析的基础上,对课次与阶段划分、教学顺序、教学时数与练习次数、练习手段作了全面的分析,为完善和丰富正面上手发球技术教学的理论与方法提供了一定的参考依据.  相似文献   

论综合运输体系的效率标准——兼论运价在综合运输体系中的作用     

张国发 《上海海事大学学报》1993,(1)

本文提出了衡量综合运输体系的三个效率标准,即货运弹性与货运强度标准、经济里程与平均运距标准和优势资源利用率标准;根据上述标准,作者在实证考察我国综合运输体系效率的基础上,指出应当让运价即市场在运输方式的配置中发挥主导作用,并从运价调整的依据、目标与方式几方面提出了具体建议。  相似文献   

Searching for momentum in NBA triplets of free throws     

Elia Morgulev  Ofer H. Azar  Michael Bar-Eli 《Journal of sports sciences》2020,38(4):390-398

ABSTRACT

The literature on momentum is still undecided, with mixed results whether momentum exists or is only perceived to exist (“hot hand fallacy”). We explore whether momentum exists by looking at cases in which a basketball player has three consecutive free throws. A free throw is a well-defined task executed in a stable environment, allegedly giving momentum optimal chances to occur. Taking 14 NBA seasons we collected over 4500 three-free-throw sets (triplets). We obtained the outcomes of the shots as well as some additional variables about the player and the game: the player’s average free-throw percentage, home or away, and the game score and the quarter when the free throws were attempted. We first analyse the hit rates in the three shots and then proceed to regression analysis that also controls for the abovementioned variables. We address several concerns raised in the literature. All comparisons and analyses yield the same conclusion that there is no evidence for momentum in the data.  相似文献   

"先富"带"共富"仍然是社会主义初级阶段的主导思想     

石晶莹 《绥化学院学报》2005,25(2):1-3

近期部分收入差距拉大的问题引起人们的普遍重视，有的人甚至认为邓小平同志的“先富”带共富的思想过时了甚至失误了。笔者认为，邓的这一思想并没过时，仍然社会主义初级阶段的主导思想。目前的部分收入差距过大现象的产生有其客观现实的原因，与邓小平同志的“先富”带“共富”的思想并没有直接的因果关系。  相似文献   

“Save our students”: contesting discourses of racist attacks against Indians down under     

Purba Das 《亚洲交流杂志》2016,26(1):1-13

This paper seeks to understand the dominant civic discourses of accusation of racism leveled against the Australians as expressed by the victims of racist attacks and Indian Government officials in the Times of India and Outlook India news magazines. The aim of the paper is to understand how the logics of the discourses have constituted the racially motivated attacks on the Indian diaspora in Australia, and how the nationalistic sentiments are fostered among the diasporic Indians and the Indians in India. The paper argues that there is a mutual production of diasporic and homeland nationalism in the face of a crisis that hits the Indian diaspora in Australia. This analysis also brings to fore the ideology of multiculturalism in Australia.  相似文献   

Self-reported symptoms and risk factors for digital ischaemia among international world-class beach volleyball players     

Daan Van De Pol  Sena Alaeikhanehshir  Mario Maas  P. Paul F.M. Kuijer 《Journal of sports sciences》2016,34(12):1141-1147

The prevalence of ischaemia-related symptoms is remarkably high among elite indoor volleyball players. Since the exposure to sport-specific demands may be higher in beach volleyball compared to indoor volleyball, the aim of this study was to assess the prevalence of ischaemia-related symptoms and associated risk factors among world-class beach volleyball players. Therefore, a questionnaire survey was performed among beach volleyball players active during the 2013 Grand Slam Beach Volleyball in the Netherlands. In total, 60 of the 128 beach volleyball players (47%) participated: 26 males and 34 females from 17 countries. The self-reported prevalence of cold or blue or pale digits in the dominant hand during or immediately after practice or competition was 38% (n = 23). Two risk factors were independently associated with symptoms of blue or pale digits: more than 14 years playing volleyball (odds ratio (OR) 4.42, 90% confidence interval (90% CI) 1.30–15.07) and sex (female) (OR 4.62, 90% CI 1.15–18.57). In conclusion, the prevalence of symptoms associated with digital ischaemia is high among international world-class beach volleyball players. Female sex and the length of the volleyball career were independently associated with an increased risk of ischaemia-related symptoms. The high prevalence of these seemingly innocuous symptoms and possible associated risk factors warrant regular monitoring since early detection can potentially prevent thromboembolic complications and irreversible tissue damage.  相似文献   

对角占优矩阵的正稳定性     

李小宜 《安康学院学报》2007,19(3):75-78,84

本文对对角占优矩阵的稳定性进行了研究,得到了对角占优矩阵具有稳定性的一些充分和必要条件.  相似文献