关键词： FOOTBALL   NONFICTION  

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关键词： Team sports   Time-motion analysis   Transient reductions   Playing experience  

摘要： Objectives: The physical and technical responses of experienced (>= 5 years) and less experienced (1-4 years) elite Australian Football (AF) players were compared following the most intense passages of match play. Design: Descriptive cohort study. Methods: Time-motion analyses were performed using global positioning systems (MinimaxX S4, Catapult Innovations, Melbourne, Australia) on one elite AF team during 13 matches. The global positioning data were categorised into total distance, low-speed activity (0-2.78 m s(-1)), moderate-speed running (2.79-4.14 m s(-1)) and high-speed running (>= 4.15 m s(-1)) distances. A standardised 5-point technical coding criteria was used to rate the number and quality of skill involvements during match-play. Results: Following the most intense 3-min running period the experienced players covered greater distances at high-speeds in match quarters two (effect size, ES = 0.42 +/- 0.30) and three (ES = 0.38 +/- 0.33) than their less experienced counterparts. Compared with less experienced players, experienced players performed more skill involvements during the second quarter (ES = 0.42 +/- 0.33) and fourth quarter peak 3-min bouts of exercise intensity (ES = 0.40 +/- 0.30) and quarter one (ES = 0.49 +/- 0.29) and three subsequent periods (ES = 0.33 +/- 0.20). Conclusions: Less experienced players exhibited greater reductions in physical and technical performance following peak periods of match-play. These findings suggest that training may require a greater emphasis on developing the ability of less experienced players to maintain physical performance and gain possession of the football following intense periods of match-play. (C) 2015 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.

关键词： European Championship   Humanities computing   teams   France   football   sport   technology  

摘要： Crispin Andrews takes a look at how football teams in Europe are using technology to help them beat the opposition. Footballers need to be excellent communicators both on the pitch where players work together to deal with situations defensively and create opportunities offensively in the changing room. To be effective and purposeful communicators, footballers need sound information that supports them in making the sort of decisions that will outwit opponents and contribute to the team plan. This is where technology can actually help the communication process.

关键词： Talent development   multi-dimensionality   perceived competence   performance characteristics   motivation   soccer  

摘要： The objective of this 1-year, longitudinal study was to examine the development of perceived competence, tactical skills, motivation, technical skills, and speed and agility characteristics of young Finnish soccer players. We also examined associations between latent growth models of perceived competence and other recorded variables. Participants were 288 competitive male soccer players ranging from 12 to 14 years (12.7 +/- 0.6) from 16 soccer clubs. Players completed the self-assessments of perceived competence, tactical skills, and motivation, and participated in technical, and speed and agility tests. Results of this study showed that players' levels of perceived competence, tactical skills, motivation, technical skills, and speed and agility characteristics remained relatively high and stable across the period of 1 year. Positive relationships were found between these levels and changes in perceived competence and motivation, and levels of perceived competence and speed and agility characteristics. Together these results illustrate the multi-dimensional nature of talent development processes in soccer. Moreover, it seems crucial in coaching to support the development of perceived competence and motivation in young soccer players and that it might be even more important in later maturing players.

关键词： 世界杯足球赛   德国队   进攻   防守  

摘要： 采用文献资料法和录像观察法,对2014年世界杯决赛阶段德国队7场比赛的进攻与防守进行统计分析,结果表明:德国队主要运用控制球打法为特征的阵地渗透进攻战术打法;进攻线路灵活多变,最后完成射门的配合主要在中路,在边路进攻也获得较好的效果;直接传球及运控调整传球是德国队最有效的助攻方式;助攻传球运用最多的是传地滚球;采用中前场逼迫式防守打法。

关键词： 选项课   学校体育   学习过程   程中   学校教育   上课内容   课堂形式   个体差异   问卷调查   分班  

摘要： 足球运动是目前全世界最具影响力的体育运动,足球运动已成为学校教育中一门不可或缺的课程。但是因为足球所特有的技术特点及本身所存在的大局性、多变性、精细性和对抗性,增加了在实施过程中的难度,阻碍了足球运动在校园内的推广。

关键词： Zigbee技术   足球跑位   监控系统   设计  

摘要： 旨在做好足球场运动员跑位的监控,将系统性的训练过程实现,实现信息化的监控过程,将系统运行实时性提高。通过对Zigbee技术进行分析,结合Zigbee协议栈结构以及功能特点,对系统通信原理做了具体的分析,并结合无线定位引擎,对系统整体的设计方案进行全面的分析。通过结合足球跑位监控系统,做好系统基本结构的应用,将系统中的有效性布置实现。基于Zigbee技术下足球跑位监控系统的设计,通过进行电子技术以及无线传感器系统的应用,不仅仅实现设备精度的定位过程,结合科学电子设备的实际需求,进而满足足球跑位的系统性训练。结果表明,基于Zigbee技术下足球跑位监控系统有着稳定的运行,满足足球体育运动的需求,应用价值较高。

关键词： 违反国际法   生成技术   战场喊话   信息技术   战略布局   视频应用   政治局势   隐蔽化   人类社会   工业社会  

摘要： 新时代背景下,信息技术得到空前发展,信息技术被融入各个领域。随着人类社会逐渐由工业社会转向信息社会,政治局势和战略布局开始发生变化,心理战模式和方式及信息生成机制与途径都发生了较大改变。传统心理战形式是战场喊话或投送传单。但和平时期,要求心理战要满足＂隐蔽性＂要求,避免违反国际法相关规定,且显性心理战易被敌方防御。

关键词： PTC/Creo   行为建模   优化   足球   参数化设计  

摘要： 足球是由12个正五边形与20个正六边形皮革或其他合适的材料缝制而成,根据其空间几何结构特点,运用PTC/Creo软件的行为建模技术,优化经过正六边球曲面顶点与该曲面中心的圆弧中心角,完成正五边球曲面与足球的两曲面造型单元,通过对2次镜像的3个正六边足球单元与2个正五边足球单元的阵列,以及1个正五边足球单元的复制变换,实现足球曲面造型的参数化设计,其建模过程简单快捷、脉络清晰,为足球实体的组件设计与相关产品的加工制造,提供参考。