Development of a plastic injection molding training system using Petri nets and virtual reality

INTRODUCTIONAt present, plastic as a substitute for metals in products is the most important mainstay in industrial raw materials. Furthermore, plastic injection molding is one of the most common and versatile methods for mass production of complex plastic parts with excel-lent dimensional tolerance. Since the technology of injection molding has been widely applied in manu-facturing, training on injection molding is of great importance. The traditional approach is to consult some technica…     

The Circumstance of Chinese Insurance Agents

Many disadvantages have existed in the system of Chinese insurance agents.     

THE DEVELOPMENT OF A COMPETENCE SCALE FOR LEARNING SCIENCE: INQUIRY AND COMMUNICATION

The objective of this study was to develop an instrument to measure school students’ competence in learning science as part of a large research project in Taiwan. The instrument consisted of 29 self-report, Likert-type items divided into 2 scales: Competence in Scientific Inquiry and Competence in Communication. The Competence in Scientific Inquiry scale contained 4 subscales: presenting questions and hypothesis, planning, experimenting and data gathering, and data analyzing, interpreting, and concluding. The Competence in Communication scale contained 4 subscales: expressing, evaluating, responding, and negotiating. Students were recruited randomly from primary, junior, and senior high schools in different regions of Taiwan to validate the instrument and establish its reliability and validity. The results of the analyses indicate that the instrument, scales, and subscales have reasonable internal consistency; that the theoretical structure was supported by empirical data; and that the subscales are homogeneous. These results indicate that it is an appropriate tool for measuring students’ competence in learning science. Implications and suggestions for further studies are included.     

利用Visual Foxpro6．0制作特效字幕

任何一个软件都需要设计若干个屏幕界面为其包装，本文介绍几个在Visual Foxpro6．0中制作特效字幕的实例。     

班级的『柔性』管理

与普通高中的学生相比，职中生具有以下明显特点： ①一部分学生入学成绩处于中等或偏下水平；②因拥有一定的专业特长，故在心理上有着强热的社会认同感；③因接受的是职业教育而存在着一定的自卑心理。生活上我行我素，情绪易大起大落；④自我管理能力较强，独立意识明显；⑤因升学压力较低且兴趣爱好广泛。故班级缺乏凝聚力；⑥与社会接触较多。拥有较强的社交能力。但也易感染一些不良社会风气。[第一段]     

我国破产制度的缺陷与完善

我国破产制度自确立至今，取和了一定的功效，但也逐渐暴露出其自身的若干缺陷，实施结果与确立该制度的初衷悖离较远，本文在对我国现阶段破产制度存在的若干缺陷进行剖析的基础上，提出了完善该制度的几点建议，以期完善破产立波，推进破产制度的实施。     

完善教学评估体系确保本科教学质量--美国的高等教育质量认证制度比较分析

通过对我国高等教育的评估历史和发展现状的分析,比较美国高等教育评估在评估主体、评估程序、评估功能方面的主要特点,提出我国高等教育评估工作应该走多元化发展之路,即多元的评估主体,多元的评估标准和方法体系,多元的评估功能。     

交际互动模式下英语写作教学之研究与实践

传统的英语写作教学常常采用教师为中心的“单向”式教学模式,注重产出的结果,忽视教学过程,难以引发学生兴趣.交际互动模式一定意义上克服了这一弊端.文章讨论了此模式在英语写作课教学中的意义及应用.     

Two ancient rounds of polyploidy in rice genome

An ancient genome duplication (PPP1) that predates divergence ofthe cereals has recently been recognized. We report here another potentially older large-scale duplication (PPP2) event that predates monocot-dicot divergence in the genome of rice(Oryza saliva L.), as inferred from the age distribution of pairs of duplicate genes based on recent genome data for rice. Our results suggest that paleopolyploidy was widespread and played an important role in the evolution of rice.     

关于援外项目成功实施的思考

援外工作既是一项严肃的政治任务,也是一项复杂的经济技术工作。援外项目的承担和建设既要服从国家利益和外交工作的需要,又要尊重经济规律,因此,必须从项目施工设计和实施计划、项目管理目标、项目经理的基本素质、各部门协调配合以及加强管理入手,以保证援外项目的成功实施,最大限度地发挥援助效益。