体力活动：ADHD儿童认知功能改善的干预选择

注意缺陷与多动症(ADHD)是儿童常见的行为障碍,患儿通常伴有自我调节障碍与学业困难,其生活品质与社会功能的发展受到极大的消极影响。体力活动对儿童的认知功能有积极影响,可以作为ADHD的干预策略予以应用。ADHD儿童的运动参与干预理论模型及相应的预防机制亟需探索与发展。     

基于证书PKI／CA的研究与仿真

基于证书的签名方案能够很好地的解决传统PKI中的密钥托管问题。基于一个基本的证书签名方案,进行了基于证书PKI／CA的研究,同时对其框架和类进行了详细的设计。最后给出了实验仿真结果,结果表明该框架能够有效的应用于基于证书公钥密码体制。并且实验结论正确。     

中国斑叶蝉族五新纪录属（半翅目：叶蝉科：小叶蝉亚科）

作者在对收集的宽叶蝉标本分类研究中发现该族中国新纪录属5个,其中每个新纪录属各含1个新纪录种。本文对每个新纪录种进行简单描述并给出部分生殖器结构图。     

案例教学法在Pro/E模具设计教学中的应用

根据高职学生的现状,提出在Pro／E模具设计课程中应用案例教学法,分析了实施案例教学法的必要性,研究了Pro／E模具设计案例教学的组织与实施,以及运用案例教学法应注意的问题。     

在《机械制图》教学中应用PRO/E的设想

针对中、高职学校学生在学习机械制图这门课时表现出的空间想象力匮乏的问题,结合PRO/E三维设计软件的建模功能和特点,阐述了将PRO/E软件适当地应用到<机械制图>课程课堂教学及习题课上,既是对该门课的传统教学资源,如挂图和模型的有利补充,又可发挥其灵活、方便、直观的优势,同时对激发学生学习机械制图的兴趣有着积极作用.     

基于C/S的多媒体远程集中控制系统

主要从如何以微处理器为核心的控制转换为以个人计算机和网络来实现多媒体设备的日常维护。其中主要涉及系统的总体概述以及该系统的主要实现方法,这对一般学校的多媒体设备改造具有参考价值。     

Effect of tapering period on plasma hormone concentrations,mood state,and performance of elite male cyclists

Abstract

In this study, we investigated the effect of 1- and 3-week tapering periods on concentrations of plasma testosterone (T), cortisol (C), T/C ratio, mood state, and performance in elite male cyclists. After 8 weeks of progressive training, cyclists were randomly assigned to a control group (n=12) who continued performing intense training for a further 3 weeks, or a taper group (n=12) who continued with a 50% reduction in training volume. Blood testosterone and cortisol concentrations were assayed and the T/C ratio calculated from analysis obtained via standard ELISA. Mood state was determined using the Profile of Mood States (POMS) questionnaire. All data were collected immediately after a 40-km time-trial performed before, during, and after the 8-week training protocol and after the 1- and 3-week tapering/training periods. In the taper group, 40-km time-trial time decreased significantly (P<0.01) and equally for both the 1- and 3-week taper periods relative to the control group. There were significant elevations in T/C ratio (P<0.001) and reductions in cortisol concentrations and POMS scores in the taper group relative to the control groups at the end of both the 1- and 3-week tapering periods. Hence, taper periods are effective in improving performance and mood state and elevating the blood T/C ratio.     

Refining and regaining skills in fixation/diversification stage performers: the Five-A Model

Technical change is one of many factors underpinning success in elite, fixation/diversification stage performers. Surprisingly, however, there is a dearth of research pertaining to this process or the most efficacious methods used to bring about such a change. In this paper we highlight the emergent processes, yet also the lack in mechanistic comprehension surrounding technical change, addressing issues within the motor control, sport psychology, coaching and choking literature. More importantly, we seek an understanding of how these changes can be made more secure to competitive pressure, and how this can be embedded within the process of technical change. Following this review, we propose the Five-A Model based on successful coaching techniques, psychosocial concomitants, the avoidance of choking and principles of effective behaviour change. Specific mechanisms for each stage are discussed, with a focus on the use of holistic rhythm-based cues as a possible way of internalising changes. Finally, we suggest the need for further research to examine these five stages, to aid a more comprehensive construction of the content and delivery of such a programme within the applied setting.     

基于B／S模式的市政设备材料价格数据库设计与实现

针对目前市政设计院价格信息整理和共享情况的不足,提出并开发了一套基于B／S模式的市政设备材料价格数据库。着重介绍了基于B／S模式的市政设备材料价格数据库的设计、开发过程及实现系统的关键技术。     

独立学院勤工助学管理系统设计

勤工助学管理信息化是教育信息化改革的工作之一。介绍了基于c／s模式的独立学院勤工助学信息管理系统的设计与实现方案。