论现代体育运动人才的地理分布   总被引：12，自引：0，他引：12  

李鹏  韩佐生 《体育科学》1998,18(1):0

采用文献资料研究方法,对现代体育运动人才的地理分布进行了探讨,认为人类所处地理环境是现代体育人才分布的原始基础;遗传与环境因素是现代体育人才分布的生理基础;现代奥运会对体育人才分布和再分布起了极大的强化作用。  相似文献   

对我国沙滩排球研究文献的计量分析   总被引：1，自引：0，他引：1  

谢芳 《体育科技》2007,28(4):95-98

运用文献资料、专家访谈、数理统计、逻辑分析等研究方法,对我国沙滩排球的文献数量、刊物类别、研究内容、方法手段和存在的问题等进行了分类统计,揭示了我国沙滩排球文献的特点和发展趋势,从而更好地为开展沙滩排球的运动科研服务。  相似文献   

现行国际海运统计方案述评     

陈启宇 《上海海事大学学报》1990,(3)

本文对联合国提出的国际海运统计方案的主要内容与优缺点作了较详细的分析,并对我国目前试点本方案的组织形式提出了建议。  相似文献   

张家口教育学院图书馆读者调查分析   总被引：1，自引：0，他引：1  

马骥华 《贵图学刊》2008,(4)

张家口教育学院图书馆2008年6月进行了读者问卷调查工作，对读者服务工作中存在的问题，以及问题产生的原因进行了分析，及时调整了图书馆工作的重点和方向，并制定出应对措施。  相似文献   

对纳达尔2014年法网比赛中的技术统计分析     

沈煜 《体育科技文献通报》2015,(1)

本文运用文献法、录像观察法、数理统计法对纳达尔在2014年法网单打比赛中的技战术进行统计分析,结果表明：纳达尔在发球方面具有自己的特点,保持着高效发球得分率;在接发球方面有着快速的判断、稳定的心理素质,接发球成功率很高,说明纳达尔的接发球进攻能力强,高效的破发成功率也说明纳达尔把握机会的能力很强;在比赛时以底线作为主要阵地,发挥自身优势,发挥自己击球力量大和角度刁钻,旋转强和落点准的特点;网前进攻意识不强,得分相对较少。  相似文献   

语音文本中标点符号的检测方法简介     

储琢佳 《科教文汇》2015,(21)

本文综述了语音文本中标点符号识别的相关概念和基于句法—语义规则以及基于语料库和统计语言模型的主要识别方法,并介绍了几个典型的标点符号识别系统。最后,指出了有待进一步研究的关键性问题。  相似文献   

电子商务领域科研机构合作网络研究——基于2010-2014年核心期刊论文统计     

陆刚  安海岗 《科技管理研究》2015,(13)

对我国电子商务领域科研机构间论文合作网络进行分析,引入核心机构和权威机构的名称,对权威机构的论文发表数量进行统计,构建权威机构合作关联复杂网络。对该网络的研究表明,我国电子商务领域科研机构间论文合作规模较小,水平较低,科研合作模式单一且科研机构之间交流与合作较少。加强不同科研机构学者间的交流合作对提升我国科研水平具有重要的意义。  相似文献   

Correlation between maximum in-shoe plantar pressures and clubhead speed in amateur golfers     

Todd Colin Pataky 《Journal of sports sciences》2015,33(2):192-197

Disagreements exist in the literature regarding the manner in which weight should be dynamically shared during the golf swing, both within-feet and between the back- and target-foot, to generate maximal clubhead speed. The purpose of this study was to determine whether preferential foot-loading locations underlie weight sharing by examining the correlation between clubhead speed and maximum plantar pressure (PP) distributions. Thirty-two amateur golfers with handicap indexes ranging from 2.7 to 25 performed 10 driver swings on artificial turf following a warm-up. PP distributions were recorded at 100 Hz, and clubhead speed was recorded using a ball-tracking Doppler radar system. Maximum PPs were extracted from a 2-s window approximately centred on ball contact and were regressed against clubhead speed. Significance was assessed over the entire foot surface using statistical parametric mapping (SPM), a spatially continuous technique. SPM revealed, at relatively high anatomical resolution, significant positive correlations between clubhead speed and PPs in the lateral target-foot (P < 0.05). This suggests that not only weight transfer but also weight-transfer location may be an important determinant of clubhead speed in amateur golfers.  相似文献   

M in CoMputational thinking: How long does it take to read a book?     

Kym Fry  Katie Makar  Judith Hillman 《Teaching Statistics》2023,45(Z1):S30-S39

Even at the primary level, computational thinking (CT) can support young students to prepare for participating in futures that are immersed in data. In mathematics classrooms, there are few explanations of the ways CT can support students in formulating and solving complex problems. This paper presents an example of a primary classroom investigation (8-9 year olds) over seven lessons of the problem “How long does it take to read a book?” The aim is to illustrate ways a statistical investigation can provide context for CT and demonstrate how the two complement each other to solve problems involving mathematics. The findings highlight opportunities and challenges that students face across the elements of CT—decomposition, abstraction, pattern recognition and modelling, and generalization and algorithmic thinking, including recommendations for teaching.  相似文献   

Learning statistics with interactive pictures using R Shiny: Generally preferred,but not generally advantageous     

Fang Zhao  Lena Schützler  Oliver Christ  Robert Gaschler 《Teaching Statistics》2023,45(2):106-124

Constructing interactive web apps has become more accessible for instructors, for example, by using the R package Shiny. Here we explored learners' preferences and the efficiency of interactive simulations versus static pictures in acquiring statistics knowledge of Cohen's d and standard normal distribution. Results revealed that students' spontaneous interaction with pictures was infrequent (pilot study, N = 26). While prompts (Exp. 1, N = 152) effectively ensured the manipulation of simulations, student exposure to interactive simulations led to longer learning times though similar test performance compared with student exposure to static pictures. Multiple interactive representations led to lower test performance than single interactive and static representations (Exp. 2, N = 117). Though no advantage was gained regarding learning outcomes, participants preferred the interactive variant (Exp. 3, N = 119). Taken together, this study demonstrates that the superiority of interactive pictures cannot be assumed to hold in general. Further work should evaluate how mental model construction can be effectively scaffolded by interactive simulations.  相似文献