基于CSCW的CAD系统协作支持技术与支持工具的研究

计算机支持的协同工作（CSCW）给CAD技术带来重大发展，但仍然存在许多问题。其中之一是缺乏将协作性能同应用功能有机结合的方法。文中在分析的现有协作支持技术，工具和系统不足的基础上，提出了用协作支持工具软件CoCADToolAgent改造商品化CAD系统来开发CSCD系统的新思路和总体技术路线，给出了通讯支持，协议，一致性维护和并发控制，协同感知，任务和脚色机制的有效的实现方法，作为本方法的一个应用实例，成功地将传统的人机交互式CAD系统AutoCAD转变为网络环境下支持人人交互的CSCD原型系统，作为专用协作支持工具，CoCADToolAgent比NetMeeting之类的通用协作支持工具具有更好的协作性能，该方法可推广到三维CAD系统。     

基于Agent的开放式协同工作系统结构模型

建立开放式智能协同工作系统是CSCW研究的重要目标之一，文中在分析已有模型局限性的基础上，提出了基于Agent的开放式CSCW系统结构模型，并就模型中的Agent结构和模型的开放性和可裁剪性进行了讨论，最后，给出了一个该模型的实例系统。     

一个基于CSCW的协同式计算机辅助设计系统

文中首先建立了一个CSCW系统的基本模型;然后详细介绍了一个基于复制式应用程序共享方式技术的协同式计算机辅助设计系统－CoopCAD的系统结构和关键技术,最后,给出了一个使用CoopCAD系统进行协同设计的例子。     

基于CSCW的文档会议系统

基于计算机支持的协同工作文档会议系统是多媒体会议系统重要的组成部分，也可独立作为共同编辑，集体决策，远程教学、共同设计ＣＡＤ系统等，本文论述文档会议系统功能，系统模型及系统设计与实现。最后对系统的性能进行了评价。     

基于WEB的CSCW系统及其相关技术浅析

介绍了计算机支持协同工作（CSCW）的内涵，特点，系统结构，实现方法和开发方法，着重介绍了基于Web的CSCW系统，从实现原理，系统结构和相关技术方面进行了较为详细的阐述，最后对CSCW的应用及其展望进行了描述。     

一个基于工作流的CSCW平台

在企业应用中，工作流管理作为一种重要的协同工作技术，为业务过程提供了从建模、分析到控制执行的完整框架．本文基于对工作流技术的研究，详细论述了一个基于工作流的CSCW平台—ECCS系统。     

基于MultiAgent和CSCW的多媒体教学模型

基于ＭｕｌｔｉＡｇｅｎｔ和ＣＳＣＷ的观点,提出一个多媒体教学模型,探讨了该模型的结构以及模型中Ａｇｅｎｔ的表示、通信等关键技术。     

CSCW系统中的并发控制机制的研究

并发控制是CSCW系统的关键技术之一,旨在解决由于多用户同时操作可能产生的冲突,它与传统分布式系统的并发控制存在很大的差别。该文首先讨论了CSCW系统的并发控制机制的特点和功能需求,接着简要介绍了CSCW系统中各种并发控制方法,评述了其优缺点,着重研究了各种并发控制方法对用户接口的影响。最后,从设计实际CSCW系统的角度出发,讨论了选择和设计合适的并发控制算法应重点考虑的要素。     

Design and implementation of a multimedia CSCW platform

In this paper, a generic four-layer framework for computer supported cooperative work (CSCW) is proposed. With clear separation of functionalities in each layer of the framework, application developers could implement their specific CSCW applications easily. Based on the four-layer framework, the architecture of a general purpose CSCW platform is designed and implemented with the necessary functionalities to help the collaborations among group members. To provide the system with more features and user friendliness, multimedia processing and transmission capabilities for audio and video are incorporated into the platform. Features like application-sharing, group decision support, multimedia mail transmission, etc., are well implemented in the platform. Moreover, an efficient network transport protocol, called VXTP, is designed and implemented to avoid the transmission overhead of conventional TCP. The performance measurements using both VXTP and TCP are given in the paper for comparison. Lastly, compared with other CSCW systems, our design achieves greater flexibility and portability by adopting the generality philosophy in the framework.     

一个CSCW系统的设计与实现

随着计算机网络技术的发展,计算机支持的协同工作（CSCW）系统正逐渐成为人们研究的热点,协同式计算机辅助设计系统是一类典型的CSCW系统。本文在介绍了CSCW的基本概念之后,从系统组成的角度出发,提出了一个典型的CSCW系统是由应用子系统、信息共享平台、协同工作平台、协作管理平台、以及网络传输平台这五大部分组成的,并对其各部分的内容进行了形式化的描述和系统的分析,最后以我们开发的协同式计算机辅助设计系统－－CoopCAD为例,介绍了如何按照该结构实现一个具有实时性的协同式计算机辅助设计系统。     

A generic approach for computer-assistance of complex decision processes

The increasing globalization of markets has raised the competitive pressure. The urge to adapt to rapidly changing conditions has forced many companies to introduce more flexible organizational forms. An adequate information management has to support these changes. One of the key success factors of a corporation will be the capability to perform high quality decision processes. The workbench TUB-MAGIC has been designed and implemented to support the development of distributed, intelligent decision support systems. They use intelligent agents to assist the decisionmaking process in complex situations. The concepts and the realization of TUB-MAGIC were tested by the development of the application MAGNIFICO. It has been implemented to support a cooperative general financial consulting process of a financial institution, e.g. banking corporations.     

基于CSCW环境下多媒体教学软件开发模型研究

为了提高多媒体教学软件的开发质量和开发效率,解决多媒体教学软件原型法开发模型中并行开发问题,对基于CSCW环境下多媒体教学软件开发的系统结构及开发效率进行了分析研究,建立了基于CSCW环境下多媒体教学软件的开发模型.     

Cova: A programming language for cooperative applications

This paper discusses Cova, a novel programming language designed to develop integra-tive cooperative applications and the issues related to the design and implementation of its runtime system.     

计算机支持同步协同工作中应用共享机制的研究

应用共享技术是计算机支持协同工作 ( CSCW)系统中支持同步协作的关键技术之一 .本文详细讨论了计算机支持协同工作中应用共享的实现机制 ,分析了混合式应用共享机制的实现方法 .最后 ,给出了在 MS Windows平台上的一个应用共享的具体实例     

KCHCI：一个CSCW系统框架

本文介绍了在异要型分布式计算环境下工发的一个ＣＳＣＷ系统框架ＫＣＨＣＩ。它为开发多用户协同应用提供了有力的支持层次结构和知识表示的方法的采用，使得在ＫＣＨＣＩ之下开发的协同应用系统具有良好的可移植性和可扩充性。     

应用于CSCW协同控制机制的分析与设计

基于因特网环境的CSCW中协同控制的研究,提出一个协同控制机制的概念模式,依此模式发展一个协同控制协议,实际应用于CSCW环境,使得在一个多用户信息共享环境中的群体合作能顺利进行,并增进了CSCW系统的协同程度和确保数据的一致性,发展成为一个可以应用于CSCW环境的协同控制协议.通过对该协同控制模式的研究结果,建立有实际应用目标的CSCW环境,推广到远程协作学习、协同设计、协同会诊、协同创作、群体决策等应用领域.     

Alleviating convergence problems in Group Support Systems

Not all Group Support Systems are identical, as is demonstrated by their software implementations. We discuss two existing implementations of group support tools and the process models underlying them. We demonstrate that fundamental to both processes is the merging or integration of individual data. Based on this and other empirical research, the Shared Context Model (SCM) of cooperative work is adopted and we show that it supports existing processes and others. We expect that groups will find merging their work easier with the SCM. This model is presented and embedded in the architecture and implementation of four group tools. Because these tools are destined to be used by dispersed groups, synchronously or asynchronously, an object-based communication and control mechanism is incorporated. Finally, as graphics and multi-tasking have been shown to be increasingly important, the tools are implemented in Microsoft Windows for personal computers attached to local area networks.     

ＣＳＣＷ系统中实时协同设计模型的研究

实时协同设计系统是CSCW级研究的热点,提出了实时协同设计一般化的五元组模型和其中具有关键性意义的同步模型,并以CoopCAD（协同式计算机辅助设计）系统为例,详细讨论了这一同步模型的具体实现。     

A Multimedia World Wide Web Based Conference Minute System for Group Collaboration

In this paper, we propose a World Wide Web based conference minute system which preserves important information in the conference as web documents and maintains hyperlinks to related minutes to accelerate the progress of the project. This system, based on our Java application sharing framework, provides capabilities to record and replay the audio/video data of the video conference and operations of the shared applications used in the meeting in a synchronous manner. Through the hyperlinks, people can quickly understand the logic flow of every meeting held in the project duration and select any part in a meeting for replay to know what has actually happened. Furthermore, when a new meeting is held, a minute template is generated by the system to inherit the hyperlinks from its predecessors. Other related minutes and the execution status of the resolutions in the project can be easily accessed through the hyperlinks between them. Through the help of the system, execution of the project and management of its organizational memory could be easily achieved to increase the productivity of the collaborative groups with geographically dispersed members.