面向21世纪的龙舟竞技运动   总被引：9，自引：0，他引：9  

刘靖南  许博 《北京体育大学学报》2001,24(4):458-459,484

龙舟作为中华民族传统体育进入现代社会 ,必然会融入现代体育文化的纷围 ,使其传统的民族文体活动 ,具有现代竞技体育与健身的内涵。以全国第六届少数民族传统体育运动会与全国第四届农民运动会龙舟赛的成绩情况、龙舟质量、浆手状况、单浆划水技术、赛段与浆频等要素的比较分析 ,探讨龙舟竞技的发展动态。  相似文献   

集装箱生成量可拓聚类预测   总被引：1，自引：1，他引：0  

沈家骅 《上海海事大学学报》2002,23(2):63-65

分析了集装箱生成量可拓聚类预测的建模机制 ,构建出可拓聚类预测的物元模型 ,并用该模型对集装箱生成量进行了区间预测。  相似文献   

关于体育赛事风险管理要素的研究   总被引：10，自引：0，他引：10  

李国胜  张文鹏 《广州体育学院学报》2005,25(2):39-41

运用献资料法分析了我国当前举办体育赛事亟需加强风险管理的需要，并系统地分析了体育赛事风险的特征、效应及类型，通过对体育赛事风险管理的主体、客体、目标和对策等要素的研究，探讨了举办体育赛事加强风险管理的对策。  相似文献   

100m跨栏跑教学方法的单因素方差分析     

孙红敏 《河北体育学院学报》2003,17(4):36-37

通过100m跨栏跑的单元教学,施以不同的教学方法,观察学生完成技术动作的情况。运用单因素方差分析,经SAS软件检验,认为栏间四步技术是普通高校女生100m跨栏跑的合理技术。  相似文献   

力竭运动对小鼠骨骼肌6种元素含量的影响   总被引：3，自引：0，他引：3  

赵光  肖德生 《浙江体育科学》2003,25(4):10-11,27

利用高频电感耦合等离子体原子发射光谱法(ICP-PES)测定了小鼠一次性力竭游泳运动后，骨骼肌内铁(Fe)、锌(Zn)、铜(Cu)、硒(Se)、钙(Ca)、镁(Mg)6种元素含量的变化。结果表明，力竭运动后可使小鼠骨骼肌内Ca、Se含量明显上升，Cu元素含量基本不变，Fe、Zn、Mg含量则明显下降。为进一步研究运动员大运动量训练后合理补充微量元素提供科学的依据。  相似文献   

步兵分队敌火下运动的呼吸方法初探   总被引：1，自引：1，他引：0  

司世明 《军事体育进修学院学报》2002,21(4):53-55

步兵分队敌火下运动，体力消耗明显增大。运用合理的呼吸方法是降低体力消耗，充分发挥人体机能能力，保持旺盛体力，提高攻击分队战斗力的一个十分重要因素。只要将合理的呼吸方法应用于步兵分队敌火下 运动中，就能使战斗人员摄取最大氧量，提高有机体最大摄氧量的利用率，降低我分队的体力消耗，充分发挥体能优势，夺取进攻战斗的胜利。  相似文献   

政府网站信息资源知识元模型与可视化表征研究     

王萍  王美月  王益成  黄新平 《图书情报工作》2018,62(23):14-21

[目的/意义]利用知识元模型理论研究政府网站知识服务效果的优化路径,辅以可视化表征技术,以降低大数据环境下政务用户信息获取的操作负载和知识加工的认知负荷。[方法/过程]依据相关知识元模型研究推理出符合政府网站信息资源属性特征的六元组知识元表示方法和四元组知识元本体结构,采用TextRank与HDP算法分别抽取政府网站信息资源关键词和主题词,并由领域专家根据抽取结果确定知识元,构建包含知识元本体库生成和可视化知识服务的政府网站信息资源领域知识元可视化表征模型。[结果/结论]通过政府网站发布的共享单车实例检验知识元可视化表征模型的有效性和可行性,为实现政府网站粗粒度信息服务转向以知识元为单位的细粒度知识服务范式开辟了新的研究思路,可视化知识服务模式增强了政务信息导航的结构化和用户解读领域文本语义的效果。  相似文献   

Spatial Discovery of Linked Research Datasets and Documents at a Spatially Enabled Research Library     

Sara Lafia  Werner Kuhn 《Journal of Map & Geography Libraries》2018,14(1):21-39

Current publishing practices in academia tend to result in datasets that are difficult to discover. This is because datasets are not well-integrated across academic domains and they are often not linked to the documents that reference them. For these reasons, discovering datasets across domains can be challenging; for example, discovering archeological observations and biological specimens using the same search is not widely supported, even if both datasets share a similar spatial extent, like Mesoamerica. It is also challenging to retrieve relevant documents that reference datasets; for example, retrieving a series of field reports that reference archeological observations is typically not supported. Our work develops an extensible method for: (1) geographically integrating collections across disciplinary repositories and (2) connecting datasets to related documents. We describe a collection of spatially-referenced researcher datasets, capturing their metadata elements and encoding them as linked open data. We then leverage existing library services to formalize links from datasets to documents. The system described in this work has been deployed, resulting in an experimental open data site for the UCSB campus. Results indicate that this system can be scaled-up with support from an institutional repository in the near future.  相似文献   

Guiding Low Spatial Ability Individuals through Visual Cueing: The Dual Importance of Where and When to Look     

Victoria A. Roach  Graham M. Fraser  James H. Kryklywy  Derek G.V. Mitchell  Timothy D. Wilson 《Anatomical sciences education》2019,12(1):32-42

Research suggests that spatial ability may predict success in complex disciplines including anatomy, where mastery requires a firm understanding of the intricate relationships occurring along the course of veins, arteries, and nerves, as they traverse through and around bones, muscles, and organs. Debate exists on the malleability of spatial ability, and some suggest that spatial ability can be enhanced through training. It is hypothesized that spatial ability can be trained in low-performing individuals through visual guidance. To address this, training was completed through a visual guidance protocol. This protocol was based on eye-movement patterns of high-performing individuals, collected via eye-tracking as they completed an Electronic Mental Rotations Test (EMRT). The effects of guidance were evaluated using 33 individuals with low mental rotation ability, in a counterbalanced crossover design. Individuals were placed in one of two treatment groups (late or early guidance) and completed both a guided, and an unguided EMRT. A third group (no guidance/control) completed two unguided EMRTs. All groups demonstrated an increase in EMRT scores on their second test (P < 0.001); however, an interaction was observed between treatment and test iteration (P = 0.024). The effect of guidance on scores was contingent on when the guidance was applied. When guidance was applied early, scores were significantly greater than expected (P = 0.028). These findings suggest that by guiding individuals with low mental rotation ability “where” to look early in training, better search approaches may be adopted, yielding improvements in spatial reasoning scores. It is proposed that visual guidance may be applied in spatial fields, such as STEMM (science, technology, engineering, mathematics and medicine), surgery, and anatomy to improve student's interpretation of visual content. Anat Sci Educ. © 2018 American Association of Anatomists.  相似文献   

Libraries and Spatial Literacy: Toward Next-Generation Education     

Benjamin D. Branch 《College & Undergraduate Libraries》2014,21(1):109-114

The role of the library is to assist citizens in skills development critical to national interest and empowerment as literacy ambassadors, in general. Specifically, the work by the Federal Geographic Data Committee (1994) indicates that spatial literacy is for every citizen and not just a set of workforce specialists. Hence, the use of maps in decision making and problem solving will become fundamental to all professions, including library professionals. Thus, a spatial literacy awareness and rationale for such as standard job ability is discussed as a future librarian workforce proficiency and knowledge transfer medium.  相似文献