外员使用的外部效应及其内在化途径研究

对外员使用的管理一直是我国体育职业化改革进程中所面临的一个问题.引入经济学中外部效应的概念和理论,并借助于数学模型分析了外员使用对联赛效用的影响.并通过介绍环境污染外部效应的解决途径,分析了国外职业体育中的相应政策.最后以CBA为例,提出了总量控制与可交易外员使用许可证的建议,以使外员的使用最大化联赛的效用.     

上肢超等长肌力练习对女子铅球教学效果的影响

本文采用文献资料法、实验研究法、数理统计分析法,选用超等长肌力练习作为教学手段,通过对实验组与对照组的比较,经过七周的训练之后发现超等长肌力练习能有效地提高女子铅球的技术动作、运动成绩及其身体素质.     

我国青年阶段篮球竞赛体系现状分析及发展研究

随着高校篮球赛事的发展与繁荣,原有的青年联赛受到了冲击,我国青少年篮球人才的培养模式处在了一个转型期,并伴随着诸多问题与困惑。如何协调各联赛间的关系,加速培养目标的实现,是现阶段我国青年篮球人才培养面临的一大课题。本文在大量文献资料分析及走访专家的基础上,提出了我国青年阶段篮球竞赛体系今后发展的思路和构想。     

基于抽样和数据流算法的超点检测(英文)

为了提高超点检测的精度并控制测量资源的使用,提出了一种基于抽样和数据流算法的超点检测方法.该方法通过抽样从概率上保证发送或接收大量流的节点能被检测,同时采用数据流技术建立了IP table和流BF(BF)两个数据结构.其中IP table结构用于判断IP是否已经被创建,如果已经被创建,则将属于该IP的所有后续的流记录在流BF结构中:如果IP table结构中不存在该IP记录,则对属于该IP的流进行抽样.对提出方法的精度和内存需求从理论上进行了分析,并采用CERNET数据进行验证.理论分析和实验测试表明,提出的超点检测算法的测量误差基本控制在5%以内,而其他算法的误差在10%左右.另外,由于使用BF数据结构,提出的算法在使用空间上也优于其他算法.     

临沂方言影响下的方言语调的语音状态

节律特征在自然语言中十分突出,而节律是丰富语言表达手段的工具。不同方言区的人,用什么节律来丰富表达手段,必然要带有地域特征,这就是方言语调。实际上,这种带有方言节律特征的表达手段,除了有超音质成分音高、音强、音长所决定的语音特征以外,还体现在方言中特有的表达语气的感叹词、语气助词和方言中特有的语法结构上。     

求解非线性方程组的改进牛顿法

对传统牛顿法进行了改进,提出了求解非线性方程组的改进牛顿法。在一定的假设条件下,证明了该算法的全局收敛性和超线性收敛。     

论CBA联赛“职业体制”与“举国体制”战略的均衡抉择

2003年和2008年,两届篮球管理中心核心成员的观念冲突,引起了众多专家学者对于CBA联赛在＂职业体制＂与＂举国体制＂选取上的思考。通过分析CBA联赛中的赛制、职业与锦标、球员的＂走出去＂与＂请进来＂、赞助商、球迷等现实问题。提出：不压缩联赛,而采用＂权重加分补偿法＂来平衡国家队与俱乐部利益的构想;认为职业是锦标的基础;仿效西班牙与阿根廷,坚持＂请进来＂与＂走出去＂的开放政策;赛制的一贯性才是吸引球迷与赞助商的正确做法等。     

Basketball game-related statistics that discriminate between teams’ season-long success

Abstract

The aim of the present study was to identify the game-related statistics that discriminate between season-long successful and unsuccessful basketball teams participating in the Spanish Basketball League (LEB1). The sample included all 145 average records per season from the 870 games played between the 2000–2001 and the 2005–2006 regular seasons. The following game-related statistics were gathered from the official box scores of the Spanish Basketball Federation: 2- and 3-point field-goal attempts (both successful and unsuccessful), free-throws (both successful and unsuccessful), defensive and offensive rebounds, assists, steals, turnovers, blocks (both made and received), and fouls (both committed and received). To control for season variability, all results were normalized to minutes played each season and then converted to z-scores. The results allowed discrimination between best and worst teams’ performances through the following game-related statistics: assists (SC=0.47), steals (SC=0.34), and blocks (SC=0.30). The function obtained correctly classified 82.4% of the cases. In conclusion, season-long performance may be supported by players’ and teams’ passing skills and defensive preparation.     

Groin injuries in professional rugby league players: a prospective study

Altogether, 100 uninjured professional rugby league players were evaluated over a 2-year period. Their height, body mass, sum of skinfolds, girths and bone diameters were recorded. A Cybex 340 isokinetic dynamometer was used to determine peak torque, work, power, endurance ratios and peak torque ratios of the hip abductors and adductors (5 repetitions at 0.52 and 2.08 rad?·?s^??1; 20 repetitions at 3.66 rad?·?s^??1) and knee flexors and extensors (4 repetitions at 1.04 and 3.14 rad?·?s^??1; 30 repetitions at 5.22 rad?·?s^??1). Hip abduction and adduction were also assessed with the hip in external rotation. Discriminant function analysis was conducted on all predictor variables to develop a multivariate predictive model capable of classifying players with a high degree of accuracy into groups with and without a groin injury. The model consisted of eight variables and correctly classified 91.7% of the non-injured players and 90.5% of the injured players. The correct classification for the model as a whole was 91.4%. The aetiological factors identified as being related to injury of the groin musculotendinous unit included abduction and adduction-with-rotation peak torque, angle of adduction and abduction-with-rotation peak torque, strength ratio of hip muscle groups, bilateral difference in extension peak torque, femur diameter and body mass.     

试论提升高等教育质量的根本途径

改革开放的30多年,高等教育规模迅猛发展,但同时涌现出来的高等教育质量问题也越来越引起政府以及社会各界的关注。本文试图从高等教育体制的改革、人才培养、高校青年教师专业发展、加大教学在教学评价中的比重等几方面来说明提高高等教育质量的根本途径,进而提出促进高等教育质量的建议。