暑假选购指南—DVD篇

何谓ＤＶＤ？ ＤＶＤ它的全称为 ＤＩＧＩＴＡＬ ＶＥＲ－ＳＡＴＩＬＥ ＤＩＳＫ,中文意思就是数字多用途的光盘,它集计算机技术、光学记录技术以及影视技术等位一体,能够满足人们对大存储容量、高性能的存储媒体 的需求。 ＤＶＤ系列产品发展至今,已经拥有以下五大类产品： １、ＤＶＤ－ＲＯＭ──电脑软件只读光盘,用途类似于 ＣＤ－ＲＯＭ; ２、ＤＶＤ－ＶＩＥＤＥＯ──家用的影音光盘,用途类似于ＬＤ或ＶＩＤＥＯ ＣＤ; ３、ＤＶＤ－ＡＵＤＩＯ──音乐盘片,用途类似于音乐ＣＤ; ４、 ＤＶＤ－ Ｒ（或称 ＤＶＤ－ ＷＲＩＴＥ…     

基于嵌入式主板的CM-STB系统设计

本文介绍的 Ｃ Ｍ － Ｓ Ｔ Ｂ类似于 Ｗ Ｅ Ｂ－ Ｔ Ｖ,它以普通电视机或监视器为输出设备,作为 Ｖ Ｏ Ｄ系统的一部分,通过网络互联实现 Ｉｎｔｅｒｎｅｔ Ｗ Ｗ Ｗ 浏览、收发 Ｅ Ｍ Ａ Ｉ Ｌ和点播节目等功能。文中着重介绍的是 Ｃ Ｍ－ Ｓ Ｔ Ｂ的硬件系统结构。     

Internet上协同环境的虚拟现实交互技术

本文在讨论第二ＷＷＷ的核心技术－ＶＲＭＬ的基础上,分析了它对Ｉｎｔｅｒｎｅｔ上的ＣＳＣＷ应用的影响,特别是在提高Ｉｎｔｅｒｎｅｔ上同工作环境中用户交互的感知性和交互性方面的作用。     

基于VRML和JAVA的虚拟现实协同系统研究与设计

该文在讨论了基于 ＶＲＭＬ的虚拟现实协同系统是 ＣＳＣＷ未来的发展方向的基础上,分析了 ＶＲＭＬ在构造虚拟现实ＣＳＣＷ系统的局限性。接着,探讨了如何将ＶＲＭＬ与 ＪＡＶＡ等技术结合起来,提高 Ｉｎｔｅｒｎｅｔ上协同环境的可感知性和交互性。在此基础上,提出了一种基于Ｉｎｔｅｒｎｅｔ虚拟现实的协同应用结构。     

ELSA最新专业图形卡Synergy 2000测试(下)

ＶｉｅｗＰｅｒｆ测试 ＶｉｅｗＰｅｒｆ是ＳＰＥＣ公司ＯＰＣ（ＯｐｅｎＧＬ Ｐｅｒｆｏｒ－ｍａｎｃｅ Ｃｈａｒａｃｔｅｒｉｚａｔｉｏｎ）项目组的主要ＯｐｅｎＧＬ测试工具。目前ＯＰＣ项目组的主席是３Ｄｌａｂｓ公司的ＢｉｌｌＬｉｃｅａＫａｎｅ。ＶｉｅｗＰｅｒｆ是个老牌的ＯｐｅｎＧＬ测试软件包,它的最新版本是６．１２,也就是我们这次采用的版本。ＶｉｅｗＰｅｒｆ６．１２由６个项目组成,分别是ＡＷａｄｖｓ－０４、ＤＲＶ－０７、ＤＸ－０６、Ｌｉｇｈｔ－０４、ＭｅｄＭＣＡＤ０１和ＰｒｏＣＤＲＳ－０３,它们分别用来…     

A Fast Hidden-line Removal Algorithm for 3-Dimensional Buildings

ＡＦＡＳＴＨＩＤＤＥＮ－ＬＩＮＥＲＥＭＯＶＡＬＡＬＧＯＲＩＴＨＭＦＯＲ３－ＤＩＭＥＮＳＩＯＮＡＬＢＵＩＬＤＩＮＧＳＱｉｎＫａｉｈｕａｉ；ＴｏｎｇＧｅｌｉａｎｇ；ＺｈａｎｇＮａｎ；ＣｈｅｎＤａｉｌｉｎ；ＬｉＹｕｎｇｕｉ；ＳｈｅｎＷｅｎｄｕＡＦＡＳＴＨＩ...     

COMPUTING AREAS BOUNDED BYRATIONAL BEZIER CURVES

ＣＯＭＰＵＴＩＮＧＡＲＥＡＳＢＯＵＮＤＥＤＢＹＲＡＴＩＯＮＡＬＢＥＺＩＥＲＣＵＲＶＥＳＧｕｏｊｉｎＷａｎｇ；ＴｈｏｍａｓＷ．ＳｅｄｅｒｂｅｒｇＣＯＭＰＵＴＩＮＧＡＲＥＡＳＢＯＵＮＤＥＤＢＹＲＡＴＩＯＮＡＬＢＥＺＩＥＲＣＵＲＶＥＳ￥ＧｕｏｊｉｎＷａｎｇ...     

VRML虚拟空间协同生成原型系统的研究与开发

以该文作者自行开发的ＶＲＭＬ虚拟空间协同生成原型系统为基础,提出了借助ＶＲＭＬ的外部程序接口ＥＡＩ,人－机交互地生成ＶＲＭＬ虚拟空间的方法;论述了通过采用集中式系统结构,利用ＧＣＰ／ＩＰ协议下的Ｊａｖａ Ｓｏｃｋｅｔ网络通信机制以及构造相应的网络通信数据包等方法,实现异地多个用协同工作的过程。     

自已动手架设UBB讨论区

安装ＡＣＴＩＶＥ ＰＥＲＬ ｌ由于 ＵＬＴＩＭＡＴＥ ＢＨＬＬＥＴＩＮＢＯＡＲＤ ＭＭ．Ｍ＊ｕ ＣＧＩ撰写的讨论区程序,因此如果要在ＷＩＮＤＯＷＳ环境下执行,就必须安装ＰＥＲＬ执行程序。所以首先请到这里下载免费的ＡＣＴＩＶＥＰＥＲＬ程序：ＨＴＴＰ：／／ＷＷＷ．ＡＣＴＩＶＥＳＴＡＴＥ．ＣＯＭ／ＤＯＷＮ－ＬＯＡＤ／ＡＣＴＩＶＥＰＥＲＬ／ＷＩＮＤＯＷＳ／５．６／ＡＣＴＩＶＥＰＥＲＬ－５．６．０．６２３－ＭＳＷＩＮ３２－Ｘ８６－ＭＵＬＴＩ—ＴＨＲＥＡＤ．ＭＳＩ。 下载完后,请直接执行ＡＣＴＩＶＥＰＥＲＬ－５．…     

第二代WEB中的VRML实现技术研究

本文论述了虚拟现实、虚拟现实技术及基于ＶＲＭＬ的虚拟现实技术的概况,探讨了在第二代Ｗｅｂ上的ＶＲＭＬ虚拟境界的生成技术,提出了在ＭＶＲＣ系统中用Ｊａｖａ Ａｐｐｌｐｅｔ借助ＶＲＭＬ的外部程序接口ＥＡＩ访问ＶＲＭＬ虚拟境界及人－机交互地生成ＶＲＭＬ虚拟空间的方法,最后给出了ＶＲＭＬ的使用与开发条件。     

Physical and Digital Artifact-Mediated Coordination in Building Design

We conducted an ethnographic field study examining how a building design team used representational artifacts to coordinate the design of building systems, structure, and architecture. The goals of this study were to characterize the different interactions meeting participants had with design artifacts, to identify bottlenecks in the design coordination process, and to develop design considerations for CSCW technology that will support in-person design coordination meetings of building design teams. We found that gesturing, navigation, annotation, and viewing were the four primary interactions meeting participants had with design artifacts. The form of the design information (2D vs. 3D, digital vs. physical) had minimal impact on gesture interactions, although navigation varied significantly with different representations of design information. Bottlenecks in the design process were observed when meeting participants attempted to navigate digital information, interact with wall displays, and access information individually and as a group. Based on our observations, we present some possible directions for future CSCW technologies, including new mechanisms for digital bookmarking, interacting with 2D and 3D design artifacts simultaneously, and enriched pointing techniques and pen functionality.     

VRML技术在面向CSCW的母线槽布线专家系统中的应用

VRML技术是一种集成了多媒体技术和虚拟现实技术的网络3D技术,利用它可以很方便地在Web上建立一个3D虚拟协同空间,文中将这项技术应用到电气设计领域,建立了一个松散耦合的、基于Internet/Intranet的三维异地同步CSCW系统,解决了配电系统中母线槽系统设计这个三维,异地、多人的协同设计问题。     

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。     

Collaborative surgical simulation over the Internet

Co-Surgeon is an Internet-based tele-simulation surgery system. The system combines 3D surgery simulation with CSCW technology to enable surgeons to collaboratively simulate alternative treatment plans over the Internet. It enables multiple users in remote locations to manipulate 3D anatomical models and to simulate surgical operations while sharing a view of the simulation. In addition, the system can store the simulated procedure so that offline users can later replay it and participate asynchronously. Co-Surgeon can also manage the procedures, facilitating the use of the simulation capability and widening the system's application in surgical education and reference. This article describes Co-Surgeon's design and implementation, and reports results from laboratory tests of a prototype system     

可视化协同导向钻井虚拟环境

针对传统导向钻井技术中信息展示方式和工作方式的不足,基于虚拟现实、CSCW和Agent等技术构建一个可视化协同导向钻井虚拟环境,为不同地点的钻井技术人员和专家提供协同工作平台,提高了钻井效率。描述虚拟环境的体系结构及其主要技术,包括钻井对象三维可视化、服务器与客户端的通信、协作成员的管理和多用户并发控制。     

Reflexive CSCW: supporting long-term personal work

CSCW (computer-supported cooperative work) is an active research area with many promising applications and benefits. We argue that the plight of the individual user can also be viewed as a CSCW problem, for the individual frequently acts as multiple persona: performing many independent tasks, perhaps in several places. We propose reflexive CSCW to address such issues. Solutions in the reflexive case will of course be of benefit to users even if they are working in a conventional multi-user CSCW context; proposed solutions in CSCW can be re-presented for individual users.     

Blurred partitions but thicker walls

In this paper, we explore public administration as a site of use for Computer Supported Cooperative Work (CSCW) applications, and outline the particular opportunities and challenges that CSCW and public administration pose for each other. We argue that public administrations in modern democratic societies are in both their organizational structures and their activities subservient to legal and political norms in a way that is different from private organizations; therefore, public administration cannot slavishly emulate CSCW applications that have proven themselves in a private context. Public administrations have to assess forms of CSCW in the light of the normative structure that is specific for them.We argue that the introduction of CSCW will further the tendencies to bureaucratisation and skew power biases towards public administration and away from the citizen. We give evidence for this contention on the basis of a comparison of different national attempts to introduce CSCW in Social Security offices in the Netherlands, the United Kingdom and Sweden. Although each of these countries is inspired by different ideals about the relationship between state and citizen in the social security sector, the influence of CSCW in all three cases goes in the same direction.     

CSCW tools: concepts and architectures

Building efficient frameworks for computer-supported cooperative work requires different approaches. The combination of CSCW transparency and awareness produces an advanced environment adaptable to specific applications. The authors provide a CSCW taxonomy that defines and describes criteria for identifying CSCW systems and serves as a basis for defining CSCW system requirements. They consider how the psychological, social, and cultural processes active within groups of collaborators are the real keys to the acceptance and success of CSCW systems     

Mobile CSCW技术在MIS中的研究和应用

随着智能移动终端的发展,移动CSCW逐渐成为CSCW的发展趋势,人们可以在任何时间和任何地点实现协同工作.分析移动CSCW的特点,提出一个基于移动CSCW的系统模型,并且在此基础上实现一个基于移动CSCW系统模型的仓库管理系统.