网络环境下的工程CAD实时协同研究

随着设计要求的不断提高,实现实时协同设计的条件已经成熟．ＣＳＲＣＤ技术的需求也日益迫切．介绍了网络环境下一个应用于工程ＣＡＤ的计算机实时协同系统．实践表明,提出的模型完全可行．     

基于I-DEAS的协同CAD模式研究

提出了两种基于比较流行的CAD工具软件I-DEAS的计算机支持的协同设计模式.介绍了两种模式的结构模型和关键技术,采用DCOM技术创建了CAD模型参数更新组件,使用远程屏幕复制技术实现了各设计终端的“你见即我见”.最后对比分析了两种模式,并以某发动机曲轴协同设计为例进行了说明.     

计算机支持的协同工作软件技术研究

通常计算机支持的协同工作软件,是指通过网络环境和先进的计算机技术来创造出人们可以开展深度合作的协同环境,通过深度合作来研发新产品以及开发项目,对人们的工作效率大大提高了,下文将分析计算支持的协同工作软件技术以及对协同工作软件的概述.     

ENVoice:一个支持协同工作的语音工具

语音工具是CSCW应用系统常提供的一个支撑工具。该文主要就基于ISDN企业网的语音工具原型系统ENVoice的设计为背景，详细论述了该工具的功能特点以及它的实现方法，     

产品CAD/CAM逆向工程

本文阐述了CAD／CAM逆向工程的关键技术和过程，介绍了两个应用事例，说明了该技术是CAD／CAM重要组成部分，并可大大缩短模具设计和加工的周期。     

面向CAD／CAM集成的CAPP系统

CAPP是连接CAD和CAM的纽带，本文从CAD、CAPP、CAM三层对HFCAPP系统进行结构分析，阐述了HFCAPP系统的工作原理及关键技术，实现了CAD／CAM局部集成，奠定了CIMS的基础，其结果令人满意。     

一个CAD/CAPP/CAM集成系统

CAD／CAPP／CAM集成系统是整个CIMS系统的重要信息来源，影响整个CIMS的水平。作者结合在钻井用牙轮钻头制造厂建立CIMS工程的实际，研究了CAD／CAPP／CAM系统的集成问题，本文介绍其主要功能和结构。     

基于微机局域网络上的CAD/CAE/CAM

本文介绍了微机局域网络硬、软件的种类及组成特点和共享数据库的实现，并说明了微机局域网络（WindowsNT网络）是实现CAD／CAE／CAM系统一体化最佳性能价格比的方法。     

计算机支持下的协同设计及其环境研究

在计算机的支持下进行协同设计是一种能够适应当今产品开发特点的设计方式,目前正日益受到重视。该文在对协同设计过程分析的基础上,阐述了实施协同设计的主要问题和关键技术。根据协同设计的特点,提出了建立计算机支持下的协同设计环境的方法,为进一步开展研究工作和进行支持环境的开发奠定了基础。     

基于Web Services的计算机辅助协同设计体系结构

在分析基于简单客户机／服务器和基于中间件这两种体系结构的基础上,提出了基于Web Services、松散耦合的CACD体系结构模型及原型系统。通过与其他体系结构的比较,证明基于Web Services的体系结构综合性能最好,是开发企业间大规模计算机辅助协同设计系统的新思路。     

CAD/CAM的应用与发展

本文从国内外的应用情况出发,叙述了CAD/CAM技术的发展过程,指出了我国在应用CAD技术上当前存在的主要问题。     

Development of a collaborative CAD/CAM system

This paper presents the development of a collaborative CAD/CAM system (COCADCAM). COCADCAM extends an existing single-location CAD/CAM system to a multi-location CAD/CAM application so that two geographically dispersed CAD/CAM users can work together on a three-dimensional CAD-geometry coediting and CAD-related tasks collaboratively and dynamically. COCADCAM dynamically supports CAD data communication that are not available in traditional single-location CAD/CAM. The dynamic data communication is achieved through the development of networking algorithms and CAD/CAM functions in this paper. The networking algorithms based on UNIX Interprocess Communication (IPC), the Network File System (NFS), and a connection-oriented client and server model under the Transmission Control Protocol/Internet Protocol (TCP/IP) suite. The CAD/CAM functions included surface modelling, simulation of a milling toolpath, and post-processing of an NC program following collaborative CAD-geometry coediting, which are directly or indirectly supported by the Application Programming Interface (API) of the CAD/CAM software. The networking algorithms and CAD/CAM functions together can facilitate an environment for CAD-geometry coediting and related tasks such as design, analysis and manufacture. COCADCAM has been successfully implemented through local area network (LAN) and the Internet; a remote machining cell is also linked so that the generated NC program based on a coedited free-form surface can be used for the physical machining operation. The algorithm proposed by COCADCAM can be referenced for the extension of other single-location CAD/CAM systems to multi-location applications.     

Enabling collaborative work: Work in progress

Mobile handheld and wearable computer systems to support fieldworkers (e.g. aircraft mechanics) doing a variety of tasks have been designed and studied by Carnegie Mellon University (CMU) researchers since 1991. We developed an initial research agenda and found some important results associated with the design and use of such systems. This article summarises some of the key findings from CMU's research and describes the results from one heuritic usability study about mobile handheld and wearable computer systems. Based on these research results, we put forward a new research agenda addressing important issues still to be resolved.     

基于MAS的信用评估系统建模研究

加强信用风险防范是当前企业关注的一个主要问题。信用评估涉及到财务、金融、管理、预测等定性、定量因素 ,由众多来自不同领域的专家协同工作。针对于此 ,构建了CSCW环境下多Agent的系统结构模型 ,由CSCW提供一个虚拟的协同工作空间 ,在协同机制作用下由模型库、知识库、决策Agent、系统集成Agent,以及特殊的Agent(评估专家 )组成的多Agent系统 ,实现人的“智慧”和机器的“智能”有机结合 ,保证了信用评估系统运行的高效性 (效率、效果 )。     

智能多媒体教学平台中关键技术的研究

智能多媒体教学平台是一个建立在CSCW理论基础上，旨在实现远程教学中多点间师生有效协作的系统。介绍了该平台的体系结构，提出了教学平台中的协同并发控制策略——基于创造者和角色的并发控制策略，并详细阐述了智能多媒体教学平台的实现及关谜技术：类隧道组播技术、混音技术、多个实时视频流的声控显示／隐藏技术。     

计算机支持的协同钻井工程设计系统模型研究

针对钻井工程设计具有群体性、分布性和协作性等特点,提出在计算机网络环境下,运用CSCW和Agent技术构建计算机支持的协同钻井工程设计系统。该系统可为钻井工程优化设计提供一个网上多群体协同设计的共享环境。详细描述了系统的结构模型﹑Agent的结构与通信机制以及用户管理与访问控制模型。     

The relevance of Computer Supported Cooperative Work for advanced manufacturing

Computer Integrated Manufacturing (CIM) is faced with issues which are crucial to Computer Supported Cooperative Work (CSCW). However, despite the large amount of work on Enterprise Integration and its obvious links to the CSCW field, this domain is almost totally absent in the work of the CSCW community. Therefore, this paper is intended to contribute to the discussion on the relevance of CSCW in manufacturing and to combine new concepts for cooperative work with requirements for information system design in production. Production related models, e.g., an order-driven mode of coordination, can be augmented with mechanisms of interaction for coordination, collaboration and co-decision and the design of customer/supplier chains. It is suggested, as one example, to use workflow management technology in advanced manufacturing for shop-floor production planning and control (PPC). The proposed enterprise model and support technology is especially useful for small-batch production.     

一种基于黑板的共享对象协同操纵系统

文中提出一个基于黑板的共享对象协同操纵模型，对其中的关键技术黑板结构、共享对象的分布、并发控制、协作感知进行了详细的讨论。