AutoCAD、凯图CADTool在制图课件制作中的有机结合

该文介绍了AutoCAD和凯图CADTool的特点,通过“组合体视图的画法“课件制作实例,论述了如何将二者有机地结合,在PowerPoint环境中,制作生动、形象的课件.     

Illustrator10中Web图形的输出

随着Internet的普及，Web页面的艺术设计也越来越重要，使用Illstlator不仅可以设计出专业化的页面，而且可以直接输出为Web文件，在Illustrator10中新增加的网页图片切割工具，在无损图像质量的前提下，可以把图形分解成相互拼接的块，从而缩小图片的大小，加快网页上图片的显示速度．在网页中，最引人入胜的是丰富的超级链接，通过点击网页上的超级链接到达网上的任何地方，获得无穷的网络资源．Illustrator10可以方便地在创作的插图中制作超级链接，并在输出的网页文件或FLASH动画文件中保持超级链接.     

科技期刊条形码亟须规范化

根据GB/T16827-1997<中国标准刊号(ISSN部分)条码>的组成和印刷格式要求,为了了解科技期刊使用条形码的现状,笔者对由交换得到的112种科技期刊进行了统计分析.结果是:条形码排印位置正确率为33.9%,期刊的条形码构成正确率只有25%.主要存在如下问题.     

基于MasterCAMX用户自定义刀具库的研究

阐述了在MasterCAM X中用户自定义刀具库的两种方法,一是在系统提供的基本刀具库的基础上进行修改,二是基于Visual C＋＋环境下开发出C-Hook应用程序。     

期刊条码使用时存在的问题及对策探析

期刊条码作为期刊的"身份证",是适应信息化管理需求而产生的自动识别技术,可以对期刊的零售、分检、计数、借阅等诸环节实行自动化管理,加快工作流程,解放劳动力.据笔者调查,学术类期刊条码使用不规范的占到九成以上,笔者列举了条码使用不规范的现状,并提出了一些对策供同行参考.     

对“多人引体向上训练架”的研制与实践

＂引体向上＂练习是《军人体能标准》中发展人体力量素质的一个主要训练科目,虽然动作简单,但是对人体上肢绝对力量要求较高,故考核中通过率较低。对传统引体向上训练器材进行分析,针对训练中一系列问题,设计制作＂多人引体向上训练架＂,以期为基层部队开展科学、有效的力量训练提供参考。     

Finite particle method for kinematically indeterminate bar assemblies

This study presents a structural analysis algorithm called the finite particle method （FPM） for kinematically indeterminate bar assemblies. Different from the traditional analysis method, FPM is based on the combination of the vector mechanics and numerical calculations. It models the analyzed domain composed of finite particles. Newton＇s second law is adopted to describe the motions of all particles. A convected material flame and explicit time integration for the solution procedure is also adopted in this method. By using the FPM, there is no need to solve any nonlinear equations, to calculate the stiffness matrix or equilibrium matrix, which is very helpful in the analysis of kinematically indeterminate structures. The basic formulations for the space bar are derived, following its solution procedures for bar assemblies. Three numerical examples are analyzed using the FPM. Results obtained from both the straight pretension cable and the suspension cable assembly show that the FPM can produce a more accurate analysis result. The motion simulation of the four-bar space assembly demonstrates the capability of this method in the analysis ofkinematically indeterminate structures.     

基于几何特征的足球机器人目标识别算法研究

提出了一种针对不同色标块形状的目标识别算法,能够在确保准确度的前提下快速地识别目标,满足实时比赛的需要。     

Effect of cluster set configurations on power clean technique

Abstract

The purpose of this investigation was to examine the effects of cluster set configurations on power clean technique. Ten male, recreational weightlifters performed three sets of six repetitions at 80% of one repetition max with 0 (P0), 20 (P20) or 40 seconds (P40) inter-repetition rest. During the first and second set of P0, the catch and first pull were in a more forward position during repetition 6 as compared to repetition 1, respectively. During the second set of P40, differences in horizontal displacement were found between repetitions 1 and 6 for the second pull and the loop. During the third set of P40, differences in horizontal displacement were found between repetitions 1 and 6 for the first pull, transition, and beginning of the second pull. No differences in horizontal displacement were found between repetitions 1 and 6 during P20. During each set of P0, vertical displacement decreased between repetitions 1 and 6 (1.02 ± 0.07 m vs. 0.94 ± 0.06 m; Mean ± s). Cluster set configurations led to the maintenance of vertical displacement throughout all sets. The results demonstrate cluster set configurations with greater than 20 seconds inter-repetition rest maintain weightlifting technique to a greater extent than a traditional set configuration.     

试论我院数控实训中心数控机床联网的方案及建设

本文介绍了我院数控实训中心实施网络化建设和管理的背景以及其必要性,重点讨论了数控实训中心数控机床联网的方案,介绍了目前机床联网系统的常用软件和实施方案,并加以比较,针对主要功能确定采用的具体方案,认为该数控机床联网和管理方案是适合数控实训中心的教学和培训需要的。