The analysis of interactivity in a teaching and learning sequence of rugby: the transfer of control and learning responsibility     

Bernat Llobet-Martí  Víctor López-Ros  Ignasi Vila 《Physical Education & Sport Pedagogy》2018,23(1):84-102

  相似文献   

P2P数字图书馆虚拟联盟著作权侵权风险分析   总被引：1，自引：0，他引：1  

吉宇宽 《图书情报工作》2010,54(17):36-39

基于P2P技术的数字图书馆虚拟联盟的诞生,克服了数字图书馆实体联盟之间缺乏灵活的、有效的动态整合机制的难题。由于虚拟联盟没有中心节点和管理机构,作品的传播难以控制,著作权侵权责任更难以划分。在虚拟联盟中,作为实体机构的数字图书馆主要扮演着者ICP和ISP两种角色,其侵权的方式和责任的认定各不相同。  相似文献   

对我国地方政府信息公开目录分类体系的编制建议     

冯璐  陈琳 《图书情报工作》2010,54(23):133-97

以政府信息公开网站为依托,探讨当前地方政府信息公开目录分类体系应用状况。通过浙江省、南宁市政府信息公开分类体系的案例,从其指导原则、主题分类、服务分类、机构（部门）分类的角度进行分析和说明,发现信息公开分类体系存在的问题,以此为基础,对地方政府信息公开目录体系的编制提出一些有针对性、可行性的建议,从而提升政府部门服务质量和工作效率。  相似文献   

中美战略博弈下的台湾     

赵葆珉 《哈尔滨学院学报》2009,30(11):56-61

台湾问题缘起于中国内战,但其延续与持久存在,却是中美战略冲突的产物。冷战以来的美国对台政策几经变迁,但始终以美国的利益为依归。台海统一必然触动美国霸权,台海统一同时是中国复兴的战略基点。随着马英丸当选与台独势力衰落,而两岸寻求和平共存,美国的对华政策将可能被迫再度调整,退出两岸纷争。维持台海现状政策已完成历史使命,有必要重估台海形势,将统一适时提上议事日程。在中国完成统一之后,中美关系才能向正常的大国关系过渡。  相似文献   

关于高校工会促进师德建设的思考     

陈雪松 《广西广播电视大学学报》2012,(4):74-76

加强高校师德建设有很强的现实意义,高校工会作为学校的群众组织,是联系广大教职工的桥梁和纽带,在师德建设中有着自身的特点和优势,新形势下需要积极探索各种有效途径,充分发挥高校工会在师德建设中的作用。  相似文献   

工会如何贯彻企业社会责任——从维护劳动者合法权益的角度     

鞠龙克 《玉溪师范学院学报》2012,(1):40-42

企业不仅是社会财富的创造者,还是社会责任的承担者。工会是劳动者合法权益的责任保护者;工会与企业依法可以在维护劳动者合法权益上取得基本共识,进行深度合作。工会应当促进企业社会责任运动的开展,以便更好地维护劳动者的合法权益。  相似文献   

Information-governing dynamics of attacker–defender interactions in youth rugby union     

Pedro Passos  Duarte Araújo  Keith Davids  Luis Gouveia  João Milho  SidóNio Serpa 《Journal of sports sciences》2013,31(13):1421-1429

Abstract

Previous work on dynamics of interpersonal interactions in 1 vs. 1 sub-phases of basketball has identified changes in interpersonal distance between an attacker and defender as a potential control parameter for influencing organizational states of attacker–defender dyads. Other studies have reported the constraining effect of relative velocity between an attacker and defender in 1 vs. 1 dyads. To evaluate the relationship between these candidate control parameters, we compared the impact of both interpersonal distance and relative velocity on the pattern-forming dynamics of attacker–defender dyads in the sport of rugby union. Results revealed that when interpersonal distance achieved a critical value of less than 4 m, and relative velocity values increased or were maintained above 1 m · s^?1, a successful outcome (i.e. clean attempt) for an attacker was predicted. Alternatively, when values of relative velocity suddenly decreased below this threshold, at the same critical value of interpersonal distance, a successful outcome for the defender was predicted. Data demonstrated how the coupling of these two potential, nested control parameters moved the dyadic system to phase transitions, characterized as a try or a tackle. Observations suggested that relative velocity increased its influence on the organization of attacker–defender dyads in rugby union over time as spatial proximity to the try line increased.  相似文献   

Velocity and acceleration before contact in the tackle during rugby union matches     

Sharief Hendricks  David Karpul  Fred Nicolls  Michael Lambert 《Journal of sports sciences》2013,31(12):1215-1224

Abstract

The velocity and acceleration at which the ball-carrier or tackler enters the tackle may contribute to winning the contest and prevailing injury free. Velocity and acceleration have been quantified in controlled settings, whereas in match-play it has been subjectively described. The purpose of this study was to determine the velocity and acceleration of the ball-carrier and tackler before contact during match-play in three competitions (Super 14, Varsity Cup, and Under-19 Currie Cup). Using a two-dimensional scaled version of the field, the velocity and acceleration of the ball-carrier and tackler were measured at every 0.1 s to contact for 0.5 s. For front-on tackles, a significant difference (P < 0.05) between the ball-carrier (4.6 ± 1 m · s^–1) and tackler (7.1 ± 3.5 m · s^–1) was found at the 0.5 s time to contact interval in the Varsity Cup. For side-on tackles, differences between the two opposing players were found at 0.5 s (ball-carrier: 4.6 ± 1.7 m · s^–1; tackler: 3.1 ± 1.2 m · s^–1) and 0.4 s (ball-carrier: 6.3 ± 2.3 m · s^–1; tackler: 3.7 ± 1.6 m · s^–1) at Under-19 level. After 0.4 s, no significant differences (P > 0.05) were evident. Also, the ball-carrier's velocity over the 0.5 s was relatively stable compared with that of the tackler. Results suggest that tacklers adjust their velocity to reach a suitable relative velocity before making contact with the ball-carrier.  相似文献   

本质集的邻域并和无爪图的哈密尔顿性     

徐新萍 《东南大学学报》2002,18(2)

设G是一个图 ,G的独立集Y称为本质集 ,如果存在 {y1,y2 } Y ,使得dist(y1,y2 ) =2 .本文利用插点方法 ,给出了关于k或 (k + 1)连通 (k≥ 2 )无爪图G是哈密尔顿的或 1哈密尔顿的统一的证明 .2个结果的充分条件是关于 ∑ki=0N(Yi) 与n(Y)的不等式 ,这里Y是图G的任一本质集 ,对于i∈ { 0 ,1,… ,k} ,Yi={y1,yi- 1,… ,yi- (b- 1) } Y(yj 的下标将取模k + 1) ;b是一个整数 ,且 0 相似文献