我省散打后备人才临场中的不足与对策

主要分析探讨了我省散打后备人才在近几年省散打比赛中所存在的问题与不足，并提出相应对策，为教练员在今后的训练中提供参考与帮助。     

从第三种力量到北大西洋联盟——战后初期英国均势政策的变化

战后初期，英国外交经历了从寻求建立第三种力量，企图与美苏平起平坐，到推动建立北大西洋联盟，拉住美国保卫欧洲和英国的安全的变化过程。这一转变受英国国力衰弱、美国的欧洲政策、冷战的爆发的影响。     

The kinematic differences between off-spin and leg-spin bowling in cricket

Spin bowling is generally coached using a standard technical framework, but this practice has not been based upon a comparative biomechanical analysis of leg-spin and off-spin bowling. This study analysed the three-dimensional (3D) kinematics of 23 off-spin and 20 leg-spin bowlers using a Cortex motion analysis system to identify how aspects of the respective techniques differed. A multivariate ANOVA found that certain data tended to validate some of the stated differences in the coaching literature. Off-spin bowlers had a significantly shorter stride length (p = 0.006) and spin rate (p = 0.001), but a greater release height than leg-spinners (p = 0.007). In addition, a number of other kinematic differences were identified that were not previously documented in coaching literature. These included a larger rear knee flexion (p = 0.007), faster approach speed (p < 0.001), and flexing elbow action during the arm acceleration compared with an extension action used by most of the off-spin bowlers. Off-spin and leg-spin bowlers also deviated from the standard coaching model for the shoulder alignment, front knee angle at release, and forearm mechanics. This study suggests that off-spin and leg-spin are distinct bowling techniques, supporting the development of two different coaching models in spin bowling.     

用场效应管放大电路测量可逆电池的电动势

本文介绍应用场效应管放大电路来测量电池电动势的新原理与新方法.该测量原理与方法简单、实用,不但更新了传统的测量原理,而且也提高了测量精度和学生的学习兴趣及动手能力.     

Some results on the Induced Matching Partition Number of Product Graphs

The induced matching partition number of graph G is the minimum integer k such that there exists a k-partition (V1,V2,…Vk) of V(G) such that,for each i(1≤i≤k),G[Vi]is 1-regular.In this paper,we study the induced matching partition number of product graphs. We provide a lower bound and an upper bound for the induced matching partition number of product graphs, and exact results are given for some special product graphs.     

心理诱导在背越式跳高教学中的运用

本文对背越式跳高教学中的心理诱导进行探讨,结果显示背越式跳高教学中恰当地穿插使用各种心理诱导手段,能节省教学时间,激发学生学习兴趣,克服对横杆的恐惧心理,培养学生练习的主动性、积极性。加快学生掌握背越式跳高技术的进程,提高教学效益。     

一类捕食与被捕食系统的稳定性分析

带有疾病的捕食与被捕食系统是非常重要且不可忽视的。提出并分析了一类被捕食者带有疾病的捕食与被捕食系统。在建模中,假设捕食者具有Holling II型功能反应函数。通过对特征值的分析,给出了平衡点的稳定性。     

我国区际产业转移研究综述

区际产业转移是发达区域产业结构调整升级的重要途径,是欠发达区域经济崛起发展的良好契机,也是区域产业结构优势转换升级的有效方式。本文从区际产业转移的概念、转移动力、转移战略和路径以及转移效应等四个方面对我国区际产业转移研究进行了综述。总体上,我国区际产业转移的概念研究趋于成熟,在区域产业转移的动力机理机制、准入门槛,产业转移与产业集聚,区域发展战略,地区生态环境等方面均有较多的研究。未来有关产业转移的研究可将触角伸入企业或消费者群等微观层面,以及产业转移与区域创新体系建设的联动效应等中观层次。     

Two views from the summit

This article reviews the objectives and results of the First Phase of the World Summit on the Information Society. It includes an analysis of the discourse conducted to this point at the Summit, and of the possible outcomes.     

抓好队伍·营造环境·协调关系——《空军工程大学学报(自然科学版)》办刊体会

从刊物特色、队伍建设、营造环境、协调关系等方面介绍了《空军工程大学学报(自然科学版)》的办刊体会.认为:抓好编辑队伍、稿源队伍、特约编委队伍建设是办好期刊的"基础条件",培养"服务,团结,进取,创新"的理念是办好期刊的"内部要素",协调好内外关系是办好期刊的"外部条件".