新疆群众体育场地设施投资问题的探究

从新疆第五次体育场地普查出发,采用文献资料法、逻辑方法、数理统计等研究方法,对新疆群众体育设施的投资状况分别从政策、行业本身的内在因素进行分析,指出目前新疆对群众体育场馆设施投资方面存在的问题,以探寻对开发群众体育场地资源投资的对策。     

基于匹配点逐层过滤的岩体点云配准方法

岩体点云配准是岩体三维重建与分析的基础。经典的点云配准方法虽然能够很好地适用于普通点云,但对于岩体点云并不能获得足够的精度。由于岩体点云表面结构复杂,且大部分区域为平面,基于岩体点云的这些特点,提出通过几何特征逐层过滤匹配点的岩体点云配准算法,引入匹配点对的协方差矩阵的特征值和特征向量矩阵,以及曲率、主方向等几何特征逐层过滤匹配点对,精确地找到匹配点对。在不同岩体点云上的实验测试与分析结果表明,该算法在准确度上有明显优势。     

Can a non-Muslim Mass Shooter be a “Terrorist”?: A Comparative Content Analysis of the Las Vegas and Orlando Shootings

ABSTRACT

This study used the 2017 Las Vegas and 2016 Orlando mass shootings as case studies to explore alleged double standards in reporting of events featuring Muslim and non-Muslim mass perpetrators of violence. The study used framing theory and content analysis to examine Los Angeles Times and New York Times coverage of the shootings during the one week immediately following each event. Findings are consistent with previous literature and the researchers’ expectations. The Orlando shooting, carried out by a Muslim, was allotted more coverage despite the fact that it produced nine fewer fatalities than the Las Vegas shooting, perpetrated by a white non-Muslim. The analysis also showed that the examined newspapers were more likely to employ a “terrorism” frame in their coverage of the Orlando shooting than in their coverage of the Las Vegas shooting; link the Orlando mass shooting with the global war on terrorism; and to humanize Stephen Paddock, the white perpetrator of the Las Vegas shooting. Framing differences found in this study may contribute to downplaying the threat of white male gun violence, and to reinforcing fears of Islam and Muslims.     

从传递信息到营造体验:体育传播产品转型初探——基于传播游戏理论的考察

传播游戏理论强调传播作为一种主观性游戏的存在，体育传播与此具有天然的契合点。该文在界定体育传播产品内涵、分析传播游戏理论观点的基础上，提出体育传播产品要从传递信息走向营造体验，要开发体育视频资源，利用VR技术增强赛事体验，借助机器人提升体育信息传播速度，采用数据可视化增强体育传播的趣味性与观赏性。     

‘Experimental’ secondary modern education in Britain, 1948–1958

Studies of mid-twentieth century education in England and Wales have conventionally hinged on the 1944 Education Act, foregrounding policy over practice. This article considers the significance of the inter-war progressive educational movement for postwar educational developments. It presents a case study of one teacher who was active in the early ‘experimental’ years of secondary modern education, suggesting that this period was important in the making of ‘modern’ education. It seeks to complicate both negative and positive readings of ‘meritocracy’ in postwar educational history. This article also highlights the paucity of available source material for the study of the secondary modern school, arguing that attention should be paid to well-documented cases, placed in context.     

Estimating fat-free mass in elite-level male rowers: a four-compartment model validation of laboratory and field methods

The purpose of this study was to investigate the accuracy of fat-free mass (FFM) estimates from two-compartment (2C) models including air displacement plethysmography (ADP), ultrasound (US), near-infrared interactance (NIR), and the Jackson and Pollock skinfold equation (SKF) against a criterion four-compartment (4C) model in elite male rowers. METHODS: Twenty-three elite-level male rowers (mean± SD; age 24.6 ± 2.2 years; stature: 191.4 ± 7.2 cm; mass: 87.2 ± 11.2 kg) participated in this investigation. All body composition assessments were performed on the same day in random order, except for hydrostatic weighing (HW), which was measured last. FFM was evaluated using a 4C model, which included total body water from bioimpedance spectroscopy, body volume from HW, and total body bone mineral via dual-energy X-ray absorptiometry. The major findings of the study were that the 2C models evaluated overestimated FFM and should be considered with caution for the assessment of FFM in elite male rowers. Future studies should use multiple-compartment models, with measurement of TBW and bone mineral content, for the estimation of FFM.     

父母教养方式对大学生子女体重指数和身体活动行为的影响研究

运用问卷调查法和数理统计法，对176名大学生及其父母的饮食、身体活动及教养方式进行调查分析。结果显示，子女同父母在体重指数（BMI）上具有显著正相关关系（r=19，P＜05），而在每周平均身体活动量上无显著相关（r=08，P=17）。回归分析表明，三类教养方式对子女BMI均无直接预测作用，然而专制型父母教养方式对父母与子女BMI的相关关系起间接调节作用（P＜01）；在子女身体活动行为方面，溺爱型父母教养方式更有可能导致子女的身体活动不足（P＜01）。研究结果表明，大学生离开家庭环境后，父母教养方式仍然对子女BMI和身体活动行为产生持续影响，父母与子女BMI方面存在相关关系。为今后在青少年肥胖干预及身体活动促进研究中纳入教养方式因素提供了实证依据。     

Body composition differences by age and playing standard in male rugby union and rugby league: A systematic review and meta-analysis

ABSTRACT

This systematic review and meta-analysis aimed to determine differences in body compositionn between playing standard and age in male rugby union and rugby league athletes. The MOOSE (Meta-analysis of Observational Studies in Epidemiology) guidelines for design, implementation, and reporting were followed. Studies were required to be in male rugby union or league and have body composition as the primary or secondary outcome. Data was required to be presented separately for positional groups and body composition presented as whole-body. A systematic search was performed in PubMed, Cochrane Library, MEDLINE, SPORTDiscus, and CINHAHL via EBSCOhost. 57 studies were included for meta-analysis. Results highlighted significantly higher fat-free mass in senior elite than senior sub-elite or junior elite athletes for all RU and RL forwards. Small and non-significant differences were found in fat mass between rugby union playing standards and age categories. Rugby league senior elite forwards had less fat mass than junior elite forwards. Practitioners should prioritise training and nutritional strategies that maximise fat-free mass development, especially in junior elite cohorts.     

我国开放式运动技能研究现状及展望

运用文献资料法对近年来我国开放式运动技能研究的相关文献进行整理分析.指出,开放式运动技能研究在我国起步晚、重视程度不高,实践研究水平跟不上理论研究水平;理论研究主要以心理学和生理学为研究角度;实验研究主要集中在篮、网、足等少数项目,研究的深度、专门性和针对性都不够,评价系统不完善.认为,未来研究将深入竞技体育、学校体育、群众体育中,针对不同训练对象、不同训练目的对具体项目的训练原则、方法、手段及评价体系进行研究.     

国外城市公共体育场馆服务大众体育发展经验及对我国的启示

摘要：采用文献和比较分析等研究方法，对国外城市公共体育场馆服务大众体育经验及对我国的借鉴进行了研究。研究认为：法国的巴黎、英国的伦敦、日本的东京、新加坡和美国的纽约城市公共体育场馆在服务大众体育发展的过程中，不断探索与创新出成功的发展模式，是国外城市公共体育场馆服务大众体育发展较为成功的典型案例。其中在注重奥运体育场馆赛后服务大众体育的发展和城市公共体育场馆基础设施生态化建设及城市公共体育场馆建设向社区方向发展的经验，对我国城市公共体育场馆服务于全民健身的开展是相当有助益的。据此，根据我国城市公共体育场馆建设的特殊国情，在借鉴国外城市公共体育场馆服务大众体育发展成功经验的基础上，探索出适合我国城市公共体育场馆服务全民健身发展的路径，即，创新大型体育赛事场馆赛后利用多功能综合运行模式，科学规划城市公共体育场馆建设的布局，加大对城市公共体育场馆建设服务全民健身开展的财政扶持力度，构建城市公共体育场馆服务全民健身开展的多功能运行模式和城市公共体育场馆服务全民健身评价指标体系发展等，为我国城市公共体育场馆建设促进全民健身公共服务体系的构建提供理论依据。