乒乓球发球训练方法探索

为更好地发挥发球与接发球技术在比赛中的重要作用,在训练实践的基础上,本文对在比赛中以及在关键时刻如何运用好发球技术进行了分析总结,并对接发球的判断等技巧进行了研究。     

对发球的理解和体会

发球是乒乓球比赛中每一分的开始,它是乒乓球技术中唯一不受对方制约、主动性很强的技术.一个高质量的发球,可以起到先发制人的作用.也正是由于发球技术在比赛中所起的独特作用,国际"乒联"才不断地对发球规则进行修改,以求最大限度地降低发球给对方造成的威胁,使比赛更具观赏性,以此推动乒乓球运动的发展.     

如何提高全队控制篮板球的能力

随着现代篮球运动的发展，攻守转换速度逐渐加快，抢篮板球已成为获得控制球权、发动反击快攻和增加进攻次数的重要手段，更是攻守转换的关键。一场比赛中篮板球控制的好与坏，对比赛的胜负起着很重要的作用。理解和认识控制篮板球在比赛中的重要作用，并结合对抗练习和实战比赛，使抢篮板球这项技术在篮球比赛中运用合理有效，把握比赛的主动权，从而赢得比赛。     

弹射技术在冰球比赛中的作用

冰球比赛的射门技术是决定比赛双方胜负的关键性技术，如何利用好每一次射门机会破门得分是众多学者探讨的问题。通过观察统计，对比赛数据进行是分析整理。得出了几组重要数据图标。就射门方法射门区域强在比赛中的作用等问题进行了分析研究，尤其是弹射教术通过实际论证，证明这个射门技术是冰球比赛中运动员最容易掌握，得分率最高的射门技术。希望对我国冰球运动的教练员在训练方法的选择上有所启示。     

对短道速滑运动员战术意识的研究

短道速滑中的每一项实际技术战术的提高都是先从意识提高开始的,主意识源自于运动员在训练和比赛中对变化着的客观事物的初级认识过程,是运动员在反复从事运动实践中逐渐形成和发展起来的一种正确的心理和生理反射活动的总和.特别在与竞争对手水平实力相当的比赛中,往往对比赛的胜负起着决定性的作用.战术意识不仅支配着技术、战术的正确发挥和运用,而且也直接影响着战术的效果与比赛的结果.因此,培养短道速滑运动员的战术意识,是战术训练的中心环节.本文作者收集大量的文献资料和比赛实况并结合自己比赛的经验,对培养短道速滑运动员的战术意识进行研究.     

论乒乓球的发球技术

发球是乒乓球比赛中每一分的开始,它是乒乓球技术中唯一不受对方制约、主动性很强的技术。一个高质量的发球,可以起到先发制人的作用。也正是由于发球技术在比赛中所起的独特作用,国际"乒联"才不断地对发球规则进行修改,以求最大限度地降低发球给对方造成的威胁,使比赛更具观赏性,以此推动乒乓球运动的发展。现就乒乓球运动各个发展时期的主要发球以及为限制发球的威胁而修改的规则进行阐述,并针对现阶段的发球训练提出相应的训练方法与要求。     

论乒乓球的发球技术

发球是乒乓球比赛中每一分的开始,它是乒乓球技术中唯一不受对方制约、主动性很强的技术.一个高质量的发球,可以起到先发制人的作用.也正是由于发球技术在比赛中所起的独特作用,国际"乒联"才不断地对发球规则进行修改,以求最大限度地降低发球给对方造成的威胁,使比赛更具观赏性,以此推动乒乓球运动的发展.现就乒乓球运动各个发展时期的主要发球以及为限制发球的威胁而修改的规则进行阐述,并针对现阶段的发球训练提出相应的训练方法与要求.     

论乒乓球的发球技术

发球是乒乓球比赛中每一分的开始,它是乒乓球技术中唯一不受对方制约、主动性很强的技术。一个高质量的发球,可以起到先发制人的作用。也正是由于发球技术在比赛中所起的独特作用,国际“乒联”才不断地对发球规则进行修改,以求最大限度地降低发球给对方造成的威胁,使比赛更具观赏性,以此推动乒乓球运动的发展。现就乒乓球运动各个发展时期的主要发球以及为限制发球的威胁而修改的规则进行阐述,并针对现阶段的发球训练提出相应的训练方法与要求。     

论散打比赛中的情绪因素及调整方法

一、前言 散打比赛是一项对抗性极强的运动，在比赛中运动员难免有时失利，引起失利的原因是多方面的。纵观国内外各级别的散打比赛，造成运动员失利的因素，除身体素质，技战术、意志品质等因素外。情绪的影响尤为突出。随着散打竞技水平的不断提高，要想取得好成绩．仅靠运动员出类拔萃的体能和技术未必能够实现，心理素质的好坏。对胜败往往起着决定性的作用。本文着重对情绪在散打比赛中的作用，影响比赛情绪的主要因素以及如何培养良好的情绪的方法进行一些初步探讨。     

“暂停”战术在男子高水平乒乓球比赛中的作用

暂停作为技战术的一部分,暂停时机运用在乒乓球比赛中的作用还是很重要的,如果教练员或者运动员在比赛中能很好的运用比赛暂停的时机,对运动员的比赛胜负还是有很大的影响。本文通过运用文献资料法、数理统计法、逻辑分析法对暂停在比赛中运用时机对比赛结果影响的分析,可以看出在男子高水平的乒乓球比赛中合理运用暂停时机对比赛结果有很大的影响。     

探讨足球运动员的抢截球意识

足球比赛是一项整体的对抗项目,需要运动员不但具备良好的身体素质和团队的紧密配合,更需要每个人都有过硬的技术本领,同时要求运动员具有优良的足球意识。文章通过对足球比赛中的抢截球技术结构和特点的分析,阐明了如何培养运动员具备抢截球意识并在比赛中合理的运用该技术,从而提高比赛的获胜几率。     

The demand for game day attendance in college football: an analysis of the 1997 Division 1‐A season

This paper develops a predictive model which includes game, team and university specific factors that are likely to influence game day demand for Division 1‐A college football. Attendance during the 1997 regular season is used as the dependent variable. Tobit estimates of two separate equations reveal that the quality of both teams, traditional rivalry and membership of specific conferences have a significant influence on demand. In addition, colleges with lower enrollments and a higher percentage of off‐campus students attract smaller crowds. The presence of a nearby professional football team also detracts from a college team's drawing power. Copyright © 2003 John Wiley & Sons, Ltd.     

NCAA conference realignment and football game day attendance

Between the 2004 and 2005 football seasons, 17% of the college football programs competing in the NCAA's Football Bowl Subdivision (FBS) changed conference affiliation. Football represents nearly half of the revenue generated by athletic departments competing at the FBS level and is thus critical to their financial success. The objective of this study is to estimate the impact a change in conference affiliation has on football game day attendance. The results indicate teams that changed conferences enjoyed an increase in attendance even after controlling for the increase in quality of competition. Copyright © 2010 John Wiley & Sons, Ltd.     

技术跨越的两个基本模式

自主-技术跨越是指跨越主体基于自身的技术积累与技术创新能力,实现技术跨越。它不仅可以改变市场需求,改变市场竞争力量的对比,还有可能改写和塑造新的行业标准,创建新的“技术-经济的游戏”规则,从而占据技术与市场的主导权。自主跨越的显著优点是率先性,技术与市场开发上具有主动性。其主要风险是技术与市场的难以判定性。引进跨越是指技术跨越主体通过有选择、有步骤地引进技术,并通过反求工程而在消化-吸收之后,在引进技术的基础上实施更高层次的技术创新,而实现的技术跨越。从产业看,自主技术跨越比较适宜新兴技术产业,引进跨越模式更适合传统产业。     

浅谈篮球中锋技术及训练方法

从篮球中锋的进攻技术和防守技术两方面来分析中锋技术。进攻技术包括投篮方式、中锋策应、篮板球和二次进攻、抢位接球、补篮点拨还有参加快攻。防守技术分防守有球队员跟无球队员两种其中又有协防、夹击、关门技术。     

The diffusion of medical technology: a "prisoner's dilemma" trap?

Medical technology diffusion and its effect on the modern hospital and on the rising costs of medical care is an issue which receives considerable attention from economists and policy analysts. In this paper a different approach is used to understand this phenomenon. We present the decision of a single hospital, whether or not to adopt an advanced technology system, using the concept of a noncooperative, nonzero sum game. Such presentation provides us with more insight on the conflict in which hospitals find themselves; the "catch" which pushes them to purchase more and more sophisticated and expensive technology in the hope that they will be able to successfully compete with other hospitals. The situation is further complicated by the existence of another "hidden" player--society, whose goals may differ from those of any individual hospital and even from the collective interests of the hospital sector. Possible conflicts that may exist and suggested solutions for each participant are presented and their policy implication are discussed.     

The Determinants of Attendance at Neutral Site College Football Games

This paper develops a predictive model of attendance at neutral site Division 1‐A college football games. From 2004–2012 seasons, 427 games were identified and split into training and holdout data sets. A Tobit model is developed using matchup‐specific, game‐specific, location‐specific, and university‐specific determinants. Results are generally consistent with the existing literature on attendance modeling, showing that these prior home team‐specific models are adaptable to neutral site locations. Results are useful as they reveal how the selection of game location and matchup of opponents – decisions made by athletic directors or bowl officials – ultimately affect game‐day attendance. Copyright © 2014 John Wiley & Sons, Ltd.     

Efficiency of football teams from an organisation management perspective

The aim of this paper is to assess the efficiency of football. Our contributions to the literature are the use of the resource-based theory and the strategy-structure-performance perspective as the study's framework, efficiency has been considered as the result of the qualities of the productive resources in football teams and efficiency is calculated in every area in the field of play. The results show that the entire team's efficiency is positively related to sporting success and the efficiency of attacking and ball recovery areas is directly related to the sport result and the efficiency of the team as a whole.     

Bankruptcy behavior in the NFL: does the overtime structure change the strategy of the game?

Companies in financial distress have an incentive to take on high-risk/high-reward projects, known as ??bankruptcy behavior.?? This paper investigates the activity of bankruptcy behavior outside of the corporate setting by analyzing the effects of the overtime structure in the NFL relative to College Football. In overtime, the first team to score in the NFL wins. In college football, however, both teams in overtime get a chance to score and the winner is decided when one team outscores the other. This structure causes different strategies for the NFL teams approaching overtime relative to college football teams. Using the variance in scoring throughout the game, I find evidence that NFL teams take on more risk late in the game to avoid overtime, or act as if they have bankruptcy behavior.     

Forecasting football results and exploiting betting markets: The case of “both teams to score”

The continuous growth of available football data presents unprecedented research opportunities for a better understanding of football dynamics. While many research works focus on predicting which team will win a match, other interesting questions, such as whether both teams will score in a game, are still unexplored and have gained momentum with the rise of betting markets. With this in mind, we investigate the following research questions in this paper: “How difficult is the ‘both teams to score’ (BTTS) prediction problem?”, “Are machine learning classifiers capable of predicting BTTS better than bookmakers?”, and “Are machine learning classifiers useful for devising profitable betting strategies in the BTTS market?”. We collected historical football data, extracted groups of features to represent the teams’ strengths, and fed these to state-of-the-art classification models. We performed a comprehensive set of experiments and showed that, although hard to predict, in some scenarios it is possible to outperform bookmakers, which are robust baselines per se. More importantly, in some cases it is possible to beat the market and devise profitable strategies based on machine learning algorithms. The results are encouraging and, besides shedding light on the problem, may provide novel insights for all kinds of football stakeholders.