改善跨栏跑周期节奏的标记法教学实验研究

在跨栏跑技术教学中 ,根据优秀运动员起跨、下栏和栏间各步步长以及所占栏距的百分比值 ,确定学生不同栏距各步步长的比例分配 ,用标记法给以限定 ,并通过抓两腿配合时机掌握跨栏步技术 ,对栏间跑的节奏产生良好影响 ,建立较合理的跨栏跑周期节奏 ,并通过教学实验得以验证     

Effects of false-start disqualification rules on response-times of elite-standard sprinters

The 100 ms ruling for false start disqualification at athletic competitions governed by the International Association of Athletics Federations has been in force since the early 1990s. Throughout this period, there have been marked changes to the rules that govern the disqualification of athletes from sprint events incorporating starts from blocks. This study analysed all available World and European Championship response-time (RT) data from 1999 to 2014 to examine effects of rule changes on competition RT at major championships. The exponentially modified Gaussian distribution was used to model RT and make comparisons relative to athletes’ sex, ruling periods and competition rounds. Revised RT thresholds of 115 ms and 119 ms were identified for men and women, respectively, indicating that the current 100 ms rule could result in some false starts not being detected in competitive athletics. The study proposes that when using existing International Association of Athletics Federations approved systems, the false start detection threshold should be increased and that men and women athletes should have different thresholds because of substantial evidence of a sex-based difference in RT in elite-standard athletes.     

Social inclusivity,cultural diversity and online film consumption

It has been argued that the circulation of film online is a “democratising process”, evident in the breadth and depth of international film now available online, and in the greater ease of access to this content for audiences across the world. This is seen by some to present greater commercial opportunities for film-making from countries marginalised by previous distribution networks, and to foster a more globally diverse and inclusive film-viewing culture, with particular benefits for diasporic populations. Others, however, have pointed to the way in which audiences’ engagement with film online may be constrained by the economics and technology of online distribution and cultural competencies rooted in social stratification. These factors may limit how and what audiences watch, extending beyond issues of physical access to those of cultural access. As such, they raise questions regarding the demographic composition of the audience for online methods of film distribution and different types of international film. We lack sufficient understanding of these issues, however, due to the limited emphasis upon socio-demographic variables in existing academic research into online film consumption, and the limited consideration of particular film content in relevant market research. This article uses original audience research to interrogate the extent to which online distribution is able to connect audiences to a diversity of international film in comparison to other methods of distribution. It also considers some of the socio-demographic characteristics of the audiences for different methods of distribution and types of international film. In doing so, the article grants us a clearer understanding of the degree to which online film distribution fosters diversity and inclusivity through the connections it facilitates between audiences and content.     

云南省保山地区降水年内分配的区域差异研究

利用保山地区腾冲县、龙陵县、保山市气象站的降水资料,从降水年内分配的不均匀性、集中性等方面比较了高黎贡山两侧降水的区域特征。得出以下结论：在西南季风大气候条件控制下,受高黎贡山＂通道-阻隔＂及自身地形的影响,龙陵、腾冲、保山3地的降水年内分配特征表现出明显的地域差异。3个地区中受西南季风影响剧烈程度由高到低依次为：龙陵、腾冲、保山;从各地不同时期降水不均匀性的变化来看,保山具有龙陵、腾冲两地的综合特征,又有自身的特点。各时期3地降水集中期变化不大,龙陵、腾冲主要集中在7月下旬,而保山相比则要滞后一段时间,说明保山受西南季风影响比龙陵和腾冲迟,受到的影响相对较小。     

注意分配与动作技术完成质量的研究

通过分析技术动作的构成以及注意分配与各注意品质的关系，研究了完成体育技术动作过程中的注意分配。结果表明，注意分配是完成技术动作过程中不可缺少的一种注意品质；提高运动员的注意分配能力对完成动作的协调性、节奏性以及加快反应都有着重要的作用。     

转型期我国社会体育利益整合机制研究

转型时期我国社会体育利益分化明显,体育利益结构变化深刻,很大程度上影响了我国体育事业的和谐发展,所以现阶段应该加强对社会体育利益整合机制的研究.考虑我国社会经济发展的实际情况,体育利益整合机制应主要包括充足的主体动力、健全的体育利益保障机制、完善的体育利益表达机制、合理的体育利益分配机制、多元的体育利益补偿机制.     

浅谈竞技武术自选套路整套体力的分配

随着竞技武术套路的日趋发展,竞技武术套路规则的改革,对运动员的技、战术水平与体力分配要求越来越高,在整套的套路比赛中,体力的合理分配是取得优异成绩的保障.通过多年的训练、比赛实践,对竞技武术自选套路整套体力的分配进行探讨,进而提出训练建议,为今后科学训练提供依据.     

马尔可夫链方法在体育专业教学质量评价中的应用

利用马尔可夫链评估法,评价了体育专业教师的教学质量,其评价结果比其他评价方法更具合理性。     

十运会我国田径项目地域分布和发展态势研究

通过对第10届全运会田径比赛1~8名成绩、奖牌和项目地域分布进行统计,客观分析了各代表团男女单项优势项目地域分布特征;表明中国田径项目地域发展不平衡;短跨项目取得全面突破;长距离耐力项目属于世界高水平行列,将是中国2008年奥运金牌增长点。     

20-69周岁年龄人群体脂分布情况的研究

为了解20--69周岁年龄人群体脂分布情况,本研究随机抽取了浙江省25个县、区的城乡居民,共2775人,女性1449人,男性1326人。依据《2005年国民体质监测工作手册》的要求,10岁为一个年龄组,共分20-29周岁、30～39周岁、40～49周岁、50-59周岁和60～69周岁5个纽别,并采用日本TANITA多频身体成分分析仪（MC-180）对人体进行身体成分的测试,结果显示：①体脂量和体脂百分比女性呈持续上升,男性为先上升后下降;②体脂量的增加主要有表现在躯干部位脂肪含量的增加,躯干成为脂肪堆积主要部位;③内脏脂肪含量增加幅度最大,男性约增加73．42％,女性约增加150．91％。