在分布式虚拟现实的环境中数据传输的研究

分布式虚拟现实技术可以在分布式环境下满足多人实时参与虚拟环境的要求．较好地实现了信息的交互、文中从分布式虚拟现实的特征、网络模型以及数据的传输进行了分析和讨论，减少网络通讯负载一直是分布式虚拟现实致力解决的问题，本文基于分布式虚拟环境介绍了兴趣管理技术，并提出了多阈值DR技术的思想。多阈值DR技术为解决大规模分布式虚拟环境的通讯负载提供了新的思路。     

软件变更度量

运用软件度量的方法改进传统的变更管理过程,论述了在软件变更管理中应用度量的完整过程,并以实际数据为例分析了软件变更状况的相关特性,从而帮助软件开发人员改善软件变更管理策略,是软件度量方法在变更管理中的一次成功实践.     

Re-engineering the Engineering Change Management process for a drawing-less environment

Currently, 3D models and 2D drawings are the main basic elements that together form and carry the product definition throughout the product lifecycle. With the advent of the Digital Product Definition trend, industries have been interested in adopting a Model-based Definition (MBD) approach that enables the integration of drawing annotations directly onto a 3D model, thereby minimizing the need to generate engineering drawings. This drawing-less environment requires a way to adequately carry the product definition throughout a product's lifecycle while supporting all of the downstream users’ specific needs. The objective of this article is to present a solution to carry the Engineering Change Management (ECM) process in a drawing-less environment. Therefore, based on ECM process requirements from two Canadian aerospace companies, we propose an MBD dataset which consists of an MBD model and a distribution file. The proposed MBD dataset is evaluated and the MBD-driven ECM process is outlined.     

一种基于VRML—Java的分布式虚拟环境模型及其实现

以分布式虚拟环境下的协同工作为根本目的,分析了采用VRML—Java作为开发平台的可行性,并在此基础上提出了基于VRML—Java的分布式虚拟环境的一种模型,对其实现作了简要介绍。     

VBE中基于迁移工作流的VO过程研究

结合VBE中VO业务过程和迁移工作流规范的系统架构,提出以VBE为联盟组织域的迁移工作流系统模型,给出了一种基于成员组织自治管理和服务市场招标相结合的服务发现模式,并对描述了基于迁移工作流的VO管理流程。该模型在VBE中实现VO的方式具有组建速度快、通信代价低、运行效率高和业务适用范围广等优点。     

Towards user centred design (UCD) in architecture based on immersive virtual environments

This paper describes a generic concept of how to combine the experience of user centred design (UCD) in the field of Human Computer Interaction (HCI) with the traditional approach of participatory design (PD) in an architectural design process. Even if some basic requirements of this generic method are not available yet, this paper will also describe an approach, which enables planners even now to involve end users by using virtual environments (VE) as immersive and spatial prototype. It will be described and illustrated by the way of example using the building project Centre of Virtual Engineering of the Fraunhofer Institute for Industrial Engineering (IAO) in Stuttgart. It demonstrates that the transfer of the UCD approach to architectural planning combined with the provision of an adequate prototype can make a significant contribution towards an increase in quality and performance in building and construction projects.     

支持虚拟归属环境的系统框架设计与实现*

虚拟归属环境（VHE）是下一代网络的重要概念,根据虚拟归属环境的要求和特征提出了一个实现该概念的系统框架,给出各功能实体设计。介绍该系统框架下支持虚拟归属环境目的业务提供方式,讨论了身份管理等机制设计,最后给出了基于J2EE的原型系统实现。     

分布式虚拟环境设计

本文首先描述了分布式虚拟环境的基本概念和一般性问题,然后探讨了基于ＶＲＭＬ２．０的分布式虚拟环境的实现。     

Towards the development of a framework to create a virtual organisation breeding environment in the mould and die sector

The effective creation of Virtual Enterprises emerges after the development of: (i) a new working culture and (ii) a computer-enabled infrastructure supporting inter-operation of companies. These developments are facilitated if the potential partners belong to a Virtual Organisation Breeding Environment (VBE). This paper describes a framework to create and support the life cycle of Virtual Enterprises operating (relying on a VBE) in the mould and die sector. The proposed framework is called AmbianCE and it is the result of a 5-year research project in the field of Collaborative Network Organisations. The AmbianCE framework has been validated in a Brazilian VBE called Virfebras. A peculiar characteristic of Virfebras is that many of its members are competitors.     

虚拟战场环境中的声音仿真应用研究及实现

在作战实验室这样的大型人－环分布式仿真应用中,环境的逼真度以及由此产生的成员沉浸感,是仿真可信度的先决条件之一。研究虚拟战场环境中的声音合成是提高环境逼真度的重要途径。该文从应用角度对虚拟战场环境下声音的仿真有关问题作了较系统的探讨,并采用Ｍｉｃｒｏｓｏｆｔ的ＤｉｅｃｔＳｏｕｎｄ ＳＤＫ编程实现。