Agent技术在程序设计智能教学系统中的应用

讨论了Agent的相关概念及其通信机制,并将多代理技术运用到程序设计智能计算机辅助教学系统中,该系统能根据学生的认知水平和学习兴趣确定教学过程中采用的基本教学策略,从而实现个性化学习和智能化教学。

当前CAD技术发展对策

迅速发展的Internet技术给CAD应用领域注入了新的活力。世界上许多先进的CAD软件纷纷推出支持Internet互联网络的接口 ,将计算机联成网络 ,实现资源的共享 ,建立在开放式、分布式网络上的CAD集成系统已成为CAD技术发展的主要趋势。由于现代设计越来越趋向于群体化、协作化和国际化 ,因此在信息高速公路上建立支持项目组的产品开发过程的分布式系统 ,实现远距离合作伙伴的协同工作 ,实现网上设计和网上资源共享 ,已势在必行。

特征谐波对换流变压器的影响分析

阐述12脉动整流器的原理和特征谐波产生机理。以正在建设的糯扎渡至鹤山±800 kV高压直流输电工程为研究对象,分析换流变压器绕组中的特征谐波成分及其对换流变压器可能造成的影响。利用计算机辅助设计-电磁暂态模拟程序软件搭建其系统仿真模型,仿真验证谐波因素是导致换流变压器故障主要发生在二次绕组的重要原因之一,并针对该问题提出了3种解决方案。

基于PSCAD的±800 kV特高压直流输电仿真模型分析

以糯扎渡—鹤山±800 kV特高压直流输电系统为研究对象,利用电力系统计算机辅助设计和电磁暂态模拟程序软件(power system computer aided design and electric magnetic transient in DC system,PSCAD/EMTDC),建立交流系统、换流器、换流变压器、交直流滤波器、直流平波电抗器、直流输电线路的仿真模型,并在这个仿真平台上进行单极、双极全压仿真模拟分析,仿真结果表明所建模型较准确地模拟糯扎渡—鹤山特高压直流输电系统,可以作为研究特高压直流输电系统的有效工具。

SOFTWARE SYSTEM FOR SELECTIVE LASER SINTERING

The advent of rapid prototyping & manufacturing techniques represents a major breakthrough in production engineering. This paper is concerned with the software system aspects of the selective laser sintering (SLS),i.e.the issues that deal with an external geometric CAD model to automatically control the physical layering fabrication process as directly as possible ,regardless of the source of the model. The general issues are described and some key methods are given in this paper.

Knowledge acquisition method for case-knowledge-based product family design

Knowledge acquisition has always been the bottleneck of artificial intelligence. It is the critical point in product family design. Here a knowledge acquisition method was introduced based on scenario model and repository grid and attribute ordering table technology. This method acquired knowledge through providing product design cases to expert, and recording the means and knowledge used by the expert to describe and resolve problems. It used object to express design entity, used scenario to describe the design process, used Event-Condition-Action（ECA） nile to drive design process, and with the help of repository grid and attribute ordering table technology to acquire design knowledge. It＇ s a good way to capture explicit and implicit knowledge. And its validity is proved with respective examples.

Developing Computer-Based Design Approach to Foster the Architectural Skills of Undergraduate Students in Design Studios

The paper discusses the importance of computer as a supporting approach in architecture. This approach is expected to foster the students＇ design skills in design studios. The approach is an educational tool for tutors that could guide the students and increase their creativity in their design. It considers the concepts and the practice of digital architectural design that influence architectural education. The approach is a catalyst for creativity, experimentation, critical thinking and the sustained growth of creative communities. The core of design studio is the notions, methods and skills of digital architectural design. The instruments used for this research was an investigation that made for the work of the fourth year students designs at the architectural department at University of Jordan, by testing design process and product of students＇ work： first using manual skills, and then using computer-aided programs. The results revealed that the computer-based design approach was able to foster students＇ design skills as well as to develop their creativity in design. Ninety-one percent of 44 students were found improved in design process using computer-based approach that depends on computer programs. This was done in design studio by improving students＇ way of thinking, developing their abilities to direct their own learning and pushing them for new definitions in developing their future work.

天线部件与天线系统

0016400雷达方位转台静压轴承支承的计算机辅助设计[刊]/袁海平//电子机械工程.—2000,(4).—31～34,62(B)静压轴承因其具有独特的特点,常用来作为雷达方位转台的支承形式,本文根据静压轴承的设计理论,编制了计算机辅助设计程序,实现了设计过程的智能化、程序化,并在工程设计中应用,得到良好效果。