田径、举重运动员下肢反应力量能力探析

采用国际上通用的反应力量测试手段和方法，对191名田径、举重运动员和普通人进行了实验测试，通过对测试结果的统计分析，发现：（1）田径、举重运动员下肢反应力量测试结果未能表现出运动项目和竞技水平间的显著性差异；（2）跳深实验中，适宜的下落高度随着性别、运动项目、竞技水平等条件的不同，差异较大，因此，判定适宜的下落高度时，最好具体分析，因人而异；（3）起跳时间对于判定适宜的下落高度也有一定影响，准确的适宜下落高度的判定，对于反应力量的训练具有重要意义。     

视频图像技术的发展及在田径项目训练中的应用

通过文献资料调研、计算机视频图像处理软件的实验应用开发,对图像处理技术在田径项目训练中的主要应用进行探讨,主要内容包括图像处理技术简介;图像处理技术应用到体育科研中的几项新技术出现及发展情况;在田径项目训练中的应用方法和手段,视频图像技术反馈运动实践的主要形式和效果;进行图像处理工作所需要的软硬件基本配置情况及应用的主要目标。预测图像处理技术今后将会在体育科研攻关和服务中得到广泛的应用。     

Changes in locomotive rates during senior elite rugby league matches

Abstract

The aim of this study was to quantify the changes in locomotive rates across the duration of senior elite rugby league matches. A semi-automated image recognition system (ProZone 3, ProZone®, Leeds, England) was used to track the movements of 59 players from six teams during three competitive matches. The players were classified into one of four positional groups: props (n = 9), back row (n = 9), pivots (n = 14) or outside backs (n = 27). Players' movements were classified as low, high or very high intensity running and reported as locomotive rates (distance covered per minute played) for successive quarters of each match. Analysis of variance revealed that only the outside backs showed a significantly lower overall locomotive rate during the final quarter compared to the first (P < 0.05). However, locomotive rates for high and very high intensity running during the final quarter were significantly lower (P < 0.05) than the first quarter among outside backs, pivots and props despite no change in the rate of involvements in contact. On the basis of these findings, it is suggested that high and very high intensity running locomotive rates may be more affective methods of detecting fatigue during competitive matches than overall locomotive rate.     

基于图像处理的原生动物自动计数方法及其实现

针对一些原生动物种类在水体中不断游动难于计数的问题,采用数字图像处理技术,将连续拍摄的两幅或多幅照片,经过图像相减、增强、滤波以及二值化等图像处理技术,转换为一幅黑白图像。再使用连通区域的标号、原生动物计数和统计修正等方法,自动计算出图中的原生动物个数。该系统已被成功使用于草履虫等纤毛类原生动物的定量,得到了比人工计数更为准确和更高效的实验结果。     

输水渠道横断面设计水深测试及计算(综合性)实验

输水渠道横断面设计水深测试及计算实验结合“灌溉排水工程学”及“水力学”等学科的知识,在实验过程中,通过对实验数据的测试、分析及计算和渠道模型实物的观摩,加深了对渠道设计原理的理解,与课堂上的理论教学起到了良好的互动作用。     

"英雄"的崛起

近年来,伴随着经济快速增长,一些负面社会现象也进一步发展、恶化,人们的危机感、空虚感比任何时候都要强烈.这种亟待理想辉照的现实唤起了那些以人文关怀为己任的作家们的焦灼与忧虑,塑造英雄形象成为其创作的重要立足点,"英雄"崛起成为不争的事实.     

Registration Method for CT-MR Image Based on Mutual Information

Medical image registration is the process of finding ageometric transformation between two image-based coordi-nate systems that have the same patient-based coordinates ,i .e .the same anatomic locations .The registered multi-mo-dality images lead to impro…     

美狄亚、费德尔与蘩漪形象比较

妇女对悲剧命运的抗争在文学史上的表现是多方面的.在各种压迫面前,女性表现出相似的反抗态势.美狄亚、费德尔与繁漪所处的时代不同,地域空间相异,但她们的遭遇与不幸、反抗与斗争却十分相似,在各自的婚姻爱情体验中都存在相似的精神压抑与极大的苦闷.     

New mode of universal access and Global Memory Net

INTRODUCTION During 1998~2002, I was privileged to serve as a member of the US President’s Information Technol- ogy Advisory Committee (PITAC), and all members were deeply involved in the drafting of several PITAC Reports to the President. The one related to digital libraries was the 2001 Report of the PITAC Digital Library Panel, entitled Digital Libraries: Universal Access to Human Knowledge (PITAC, 2001). It offers an ambitious vision: “All citizens anywhere anytime c…     

近代中国在西方的“他者”形象

研究一个时期一个国家作品对另外一个国家的描述,可以看出这一时期这个国家对另一个国家的总的观点和看法。从比较文学形象学理论出发,梳理19世纪到20世纪20-30年代的中国在西方思想家、传教士和作家作品中的中国形象,可以看出,在大国主义优越感、传教需要和商业利益等现实目的作用下,中国被镀上了一层越来越晦暗的令人害怕与恐惧的色彩,渐渐成为不在场的“他者”。