共查询到20条相似文献，搜索用时 62 毫秒
1.
本文采用文献资料法、问卷调查法和数理统计法等,对遵义师范学院鞍马教学训练中出现的运动损伤情况进行了调查,结果显示鞍马教学训练中出现损伤的部位主要有院关节、肩部、腰部、前臂、踝关节五种情况;鞍马教学运动损伤产生的原因分为内部和外部因素。提出要做充分的准备活动、正确的技术指导、辅助练习及保护与帮助练习的预防措施。 相似文献
2.
体育教育专业学生在学习和掌握运动技能时与其心理定势的作用有很大的关系,提高学生的心理定势能使学生更快更好地掌握规范的动作。运用实验法就体育教育专业的学生在体操动作技术学习过程中,如何培养学生的时空知觉定势等方面进行了研究。结果表明：运用心理定向的教学,使学生在练习时减少盲目性,有利于正确掌握动作技术,从而提高练习的效果。 相似文献
3.
以学生为中心的建构主义学习理论,强调学习者的自主建构、探究和发现,并要求将这种自主学习与基于情境的合作式学习、与基于问题解决的研究性学习结合起来,因此有利于学习者创新意识、创新思维与创新能力的培养。运用建构主义教学模式,可以提高学生体操动作技术水平和发展身体素质;有助于提高学生对动作的认识分析、技术评定、保护与帮助和教学实践能力的培养;促进学生智力发展,提高发现问题和解决问题的能力;有助于培养学生学习的自主性,提高了学生学习的兴趣． 相似文献
4.
本文采用文献资料法、录像观察统计法等方法对伦敦奥运会男子跳马比赛特点进行了研究,结果表明:本次奥运会跳马比赛竞争激烈,总体水平较高:跳马比赛动作主要集中于前手翻类、侧手翻类和踺子上板类三大类,其中,又以前手翻类与侧手翻类动作为主.三类动作中,选用频次较高的6.6分以上动作主要有前手翻前团2周、前手翻前团2周转体180度、侧手翻前直转体990度、侧手翻后屈2周动作:动作难度有所下降,难度动作发展趋于停滞,但运动员要想在比赛中取得好成绩,两跳的难度必须在7分以上:动作完成质量、尤其是落地稳定性明显提高. 相似文献
5.
本文采用文献资料法、录像观察统计法等方法对伦敦奥运会体操吊环决赛技术进行了研究,结果表明:本届奥运会吊环决赛竞争激烈,是当今世界最高水平的吊环比赛;吊环成套动作难度增大,成套动作的难度一般主要由3～4个E(F)、5～6个D、1～2个C(B)组成;成套动作中D、E、F组高难动作的选用主要集中在水平十字类、倒十字类、水平支撑类、十字支撑类、悬垂摆动前屈2周及后直2周360度旋下等动作上.其中,水平十字类、十字支撑类动作选用最多;成套动作完成的质量与规格、落地稳定性普遍提高. 相似文献
6.
7.
蛙泳的关键技术是腿部技术动作,掌握了腿部技术动作就可以说学会了蛙泳;通过感知——模仿——水下练习腿部技术动作训练,以达到掌握蛙泳腿部技术。本文以蛙泳的教学实践,从腿部技术动作要领、腿部技术动作练习方法及预防和纠正错误方法三个方面总结归纳了蛙泳腿部技术动作的最优化教学法,旨在短时间内让更多的学生掌握蛙泳技术,探讨学习蛙泳的最佳途径。 相似文献
8.
搏击操是融搏击和锻炼于一唪的体育运动,在搏击课教学中恰当地利用搏击操,可以提高学生练习搏击的体能素质、提高学习兴趣、掌握正确的技术动作,还可以帮助学生锻炼身体、增进健康、复习巩固搏击技术。 相似文献
9.
表象训练法是根据体育心理学原理创建的一种教学方法.在篮球教学中对部分女生进行表象训练法的实验显示,此法有助于学生对技术动作的学习、提高和掌握,同时能培养学生学习的兴趣及热情,提高教学效果。 相似文献
10.
11.
Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors. 相似文献
12.
A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells suggesting that China's projected climate warming could decrease the pest's numbers. The study was published in Proceedings of the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007. 相似文献
13.
Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction. 相似文献
14.
《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
15.
Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies. 相似文献
16.
《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
17.
Puay Tang 《The Information Society》1998,14(1):19-31
The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means. 相似文献
18.
Milton Mueller 《The Information Society》2001,17(3):151-163
Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP. 相似文献
19.
Prof. Raymond C.K. Chen a neuropsychologist with the CAS Institute of Psychology has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.…… 《中国科学院院刊(英文版)》2008,22(1):15-15
Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology. 相似文献
20.
《中国科学院院刊(英文版)》2014,(3)
<正>In Xishuangbanna,one of China’s most biodiverse regions,landscape has changed dramatically during the past three decades due to the conversion of tropical rainforest to rubber plantations.In steep areas,terraces are often constructed before planting rubber trees,which causes two important changes in the soil:the destabilization of soil in the bench terraces and the increased vulnerability of unvegetated riser faces to erosion.Few studies have documented the nature and intensity of erosion on bench terraces.Prof.LIU Wenjie and his colleagues from the Xishuangbanna Tropical Botanical Garden(XTBG)conducted a study in Menglun County(21°5′39″N,101°15′55″E),Xishuangbanna to evaluate the influence 相似文献