多元组合训练法在男篮队员体能训练中的运用研究

采用文献资料、实验、数理统计等研究方法,简介多元组合训练法的要素.结果显示:实验对象实验前、后的运动素质(力量、柔韧、灵敏、耐力、速度)发生变化,各项指标均有明显提高且差异显著;体成分无明显差异,但体脂率呈下降趋势,体重上升.表明多元组合训练法有利于提高篮球运动员的体能状况;同时在体能训练中并未造成实验对象的机体过度疲劳和损伤,表明运动负荷量及强度的安排具有合理性.     

具有弹性支承的振动系统刚度系数的简化计算

利用振动模型简化了带有弹性支座的线弹性梁和刚架振动的刚度系数的计算 ,从而为此类线弹性振动的刚度系数的计算提供了简捷的方法     

Flexibility in higher professional education: A survey in business administration programmes in the Netherlands

In order to develop higher education in theEuropean Union there is a need to increase themobility of students and teachers. Improvingthe flexibility of educational programming isan educational policy in the Netherlands tosupport this development. To get a clearpicture of the operational characteristics ofcurrent educational programmes, theirflexibility and conditions for improvement, asurvey was carried out in Businessadministration programmes in higherprofessional education institutes in theNetherlands. The results indicate that theseeducational programmes are organised in ratherrigid operational formats that seem to restrictflexibility. The issue of developing newoperational models that allow for more flexibleeducational programme formats is discussed.Operations management and educationaltechnology are considered as potential domainsfor a re-engineering of educational systems.     

河南省城镇居民消费结构变动及其对策分析

利用扩展线性支出系统模型对河南城镇居民的消费结构进行实证分析。分析了恩格尔系数、各类商品的边际消费倾向和需求收入弹性的变化。在此基础上提出了促进河南城镇居民消费结构的合理化建议。     

高职院校毕业班学生心理弹性与择业焦虑的关系

研究发现,心理弹性与择业焦虑呈现显著的负相关关系,因此,高职院校毕业班学生的心理弹性水平越高,择业焦虑水平就越低。此外,通过调查,有利于让学生意识到自身的心理弹性水平及存在的择业焦虑问题,并促进学生自己能够通过多种方式来提高自身的心理弹性水平,从而利于学生在一定程度上缓解其择业焦虑现状。     

弹性学制真正具备了弹性吗--我国实施弹性学制的困境与所需条件

弹性学制的建立，以学分制及选课制为基础。但是在我国目前的社会状况下实施弹性学制，受到了来自包括社会、学校及学生本身等多方面因素的阻碍。只有这些方面得到不断的发展与完善，弹性学制才能真正建立起来。     

现代职业教育的开放性刍议

开放性是现代职业教育的重要特征。在新形势下构建开放性的现代职业教育体系，必须从加强政府政策的开放性和增强职业学校自身的灵活性两个方面着手。开放性的现代职业教育要适应市场经济发展的要求，但不可降低教育质量和缺乏规范。     

英汉句式的特点对比与英语学习

英汉是两种完全不同的语言，两者无论在句法、词法还是在语义上都有极大的区别。英语的句子结构与汉语作比较较为突出的特点是：语序的灵活性、句子结构的紧凑性、句子的“后重”性。分析这些英语句子的特征内涵，有助于使学生从宏观上对英语语言的结构与特点有总体把握。     

二元函数的导数在经济分析中的应用浅析

运用二元函数的导数及导数的意义，对经济活动分析，即边际、需求交叉价格偏弹性、经济最优等问题进行初探。     

Lumbar spinal loading during bowling in cricket: a kinetic analysis using a musculoskeletal modelling approach

The objective of the study was to evaluate two types of cricket bowling techniques by comparing the lumbar spinal loading using a musculoskeletal modelling approach. Three-dimensional kinematic data were recorded by a Vicon motion capture system under two cricket bowling conditions: (1) participants bowled at their absolute maximal speeds (max condition), and (2) participants bowled at their absolute maximal speeds while simultaneously forcing their navel down towards their thighs starting just prior to ball release (max-trunk condition). A three-dimensional musculoskeletal model comprised of the pelvis, sacrum, lumbar vertebrae and torso segments, which enabled the motion of the individual lumbar vertebrae in the sagittal, frontal and coronal planes to be actuated by 210 muscle-tendon units, was used to simulate spinal loading based on the recorded kinematic data. The maximal lumbar spine compressive force is 4.89 ± 0.88BW for the max condition and 4.58 ± 0.54BW for the max-trunk condition. Results showed that there was no significant difference between the two techniques in trunk moments and lumbar spine forces. This indicates that the max-trunk technique may not increase lower back injury risks. The method proposed in this study could be served as a tool to evaluate lower back injury risks for cricket bowling as well as other throwing activities.