Product Modeling in Virtual Manufacture

The competition among enterprises becomes more and more drastic. In order to win the market, so as to put itself in a stead station, the enterprise put forward many advanced manufacturing modes. Virtual manufacture is put forward by American as a wholly new concept under this situation. It is thought as advanced manufacturing technology of the 21st century. Based on the analysis to the prior, the author expatiated the concept of virtual manufacture and put forward the three demands which the product model suited for the virtual manufacture must satisfy. On the bases the author set up the product model which is composed by product function express and product definition and expatiated the product function and product definition at detail.     

Real-Time Self-Photographing Technology in the Virtual Environment

As a new technology towards 21st century, the occurs of the virtual reality technology is a result of computer graphic, human machine interface technology, sensor technology and artificial intelligence. The real time self photographing technology based on the virtual environment is a typical application of this virtual reality technique. A series of things has been discussed and studied ,such as visual reality,video intercept and so on,and the real time self photographing system based on the technology of blue background image extracting. A new arithmetic is emphasized which is produced during study and exploitation.It is image fusion technique based on the contrast appreciate characteristic.     

Study on the Application of Virtual Prototyping Experiment Simulation

The research substance and meaning of Virtual Prototyping Experiment Simulation are discussed in this paper. At the same time, the key technology of VPES is analyzed and technical project on realizing VPES system is proposed. As a example, a set of "load forecasting system of fatigue strength for light truck spare wheel" is established successfully.     

Virtual Studio System Technology

Virtual studio system (VSS), a new technology based on virtual reality, develops fast in recent years. Virtual studio concept replaces real background sets with computer generated 3D synthetic and combines real foreground action, with computer generated backgrounds. As VSS need not construct real background sets and has little limitness of time and space, it is regarded as a revolution in TV programs. This paper mainly discusses about the background, technology feature, application and future.     

X3D-a Next Generation Standard for Web3D and Its Application

With the development of Web application,virtual reality technology based on Web is popular.In Web3D field,the old standard of VRML(Virtual Reality Modeling Language)has many problems and is not fit for the development.So the Web3D Consortium provides a next generation standard for Web3DX3D(Extensible 3D specification).X3D,using multiple file encodings describing the same abstract model including XML,has a modular architecture allowing a range of levels of adoption and support for many different market types.It also has a unified application programming model and an expanded specification structure.The technology character of X3D is mainly analyzed.Also the background,development and supporting tools of X3D are introduced.And then an example of application using X3D is given.     

Modular Developing of Intelligent Controls-oriented Virtual Instrumentt

The concepts and principles of intelligent virtual controls(IVC) and virtual instruments based on them are introduced.The quintuple systematic model based on computer is discussed.By deep researching into the intelligent controls-oriented virtual instrument(ICVI) and its development system,the quintuple systematic model based on computer is introduced into ICVI systems,the uniform model of ICVI is built up and dissertated it in detail.The model builds uniform rules and methods for developing and using ICVI,and normalizes the development of ICVI.     

Collaborative Work Team Grouping Strategy in Networked Virtual Enterprise

Grouping a virtual enterprise is a key technique of agile manufacturing formation.By analyzing the elements of the enterprise's resource and requirements and making use of the concept of rescouce index and the mothed of fuzzy judgement, the model of enterprise's resource is presented. The communication structure of collaborative work team is built by using the network infrastructure of COBRA .Also, team grouping process of collaborative work is discussed.Considering the enterprise's resource demands, the strategy of selecting partners based on the optimzation of enterprises's resource is proposed.     

Analysis of the Coupling Modeling Method with CATIA-FLAC 3D and Its Application

Numerical models based on FLAC 3D are difficult to build. A new kind of method modeling and meshing in the CATIA software, named the CATIA-FLAC 3D coupled modeling method, was proposed. This method utilizes the powerful geological modeling capabilities of CATIA for three-dimensional geological body modeling and meshing. And then, the interface program of CATIA-FLAC 3D is adopted to export the information into FLAC 3D, which is coded by visual basic language based on the variance of nodes and elements between the two software. The new proposed method was used in a bias tunnel through a mountain, and the results verified the feasibility and effectiveness of the proposed method.     

虚拟物流在国际配送中的应用研究

为了有效整合社会闲散的物流资源,提高企业的国际竞争力,实现高速、安全、低成本的虚拟国际配送,运用SWOT分析法论证了虚拟物流应用于国际配送的可行性,并系统的描述了虚拟国际配送中心的运作模式、业务流程、组织结构设计和运作流程,最后提出从企业和政府两个方面来构建虚拟物流应用于国际配送中的保障措施。     

Virtual Instrument Technology and Its Application in Humidity Testing

In recent years,Virtual Instrument technology has been concerned in the arena of information technology and instrument manufacture.The authors propose the Virtual Instrument's concept,characteristics and configuration of both hardware and software.They apply Virtual Instrument to the humidity testing and brings forward the method to solute the problem,which traditional dry-humid balls humidity-testing instrument can not test several objects.By putting the emphasis on data acquisition,data processing,data storage and data display,the software design of virtual humidity test is discussed.     

基于OnyxFLOWER的虚拟花卉建模技术的应用研究

摘 要：随着信息技术和计算机技术的快速发展,以植物为对象的自然景物模拟现已成为计算机图形学领域的研究热点之一。本文重点介绍的是一种基于花卉多层次拓扑结构的三维建模软件OnyxFLOWER,并以麝香百合（Lilium longiflorum）为例对建模方法、建模特点进行分析说明,以期为后续研究提供思路和方法。     

Innovation of Construction Projects Management Based on the Five-dimension Modeling

Nowadays,the computer technology is applied more and more widely in the architecture,engineering and construction industries(AEC).This paper introduces a methodology of construction project management based on the five-dimension modeling which integrates three-dimension building models,resources and schedules by the development of virtual construction technology.The application of this method also influences several aspects of project management such as range,time,cost,resource,communication and information management.Finally,the process of 5D modeling and the management practice are presented through a real life case in Beijing which proves to be a more efficient,productive and economy project.     

A Method of Modeling with Structural Stochastic Parameters

In order to reflect the stochastic characteristic of a structure more completely and accurately,this paper presents a theory and method of modeling with structural stochastic parameters using probabilistic finite element method and perturbant finite element method,on the basis of modeling with deterministic parameters.It is applied to double decker space frame,good results are gained.     

Application Of Virtual Instrumentation in Radio Measuring System

Radio administration department permits station's building and distributes frequency used by measurement in radio electromagnetic environment. In order to improve the efficiency and accuracy of testing, the automatic measuring system software based on virtual instrumentation technology(VISA and SCPI) has developed at the VB platform, which changes the phase of outputting data just by printing spectrum chart .The system realizes functions of data sampling, transffering and processing in HP E7405A EMC analyzer. It also can establish database files for saving, inquirring, data shareing, exchanging and processing. The spectrum chart of mearsurment result is the same as that of result by manual work.     

Virtual Logistics and Its Development

The research of virtual logistics is a front task in the field of logistics management research. This paper explains the meaning of the virtual logistics and virtual logistics organization in detail based on the analysis on various existing concepts of them, introduces the actuality of the research concerning virtual logistics. Then a three dimensionality research framework and major research contents of virtual logistics are proposed. Four development directions of virtual logistics research and corresponding research emphases are pointed out.     

Enterprise Information Engineering Model and Its Integrated Support Environment

By analyzing the process of enterprise information engineering construction and intra relationship among information system requirement, business process modeling, application system constructing and project management, one of 4 meta model composed of requirement engineering, process engineering, application system engineering and support engineering is proposed for enterprise information engineering. The developments and applications of the business processes and its application systems are integrated into the same development space and application space. Basing on this, a prototype system composed of requirement modeling environment, business process modeling environment, application system modeling environment, and support engineering environment has been designed and built, which is used for supporting enterprise information engineering constructing. It is valued for the enterprise information engineering construction in our country.     

Analysis Method for Outdoor Thermal Environment of Residential Community

The physical model was simple in current outdoor thermal environment research, thus a new analysis method based on image processing was presented. With the combination of image processing and mathematical model, the new method was used to analyze the outdoor thermal environment of residential area and was validated by the comparison between the data from experiment and simulation. The results provide a new method for the simulation of outdoor thermal environment.     

感官数字化在应急演练中的应用

近年来,由于微生物及有毒有害物质污染而引起的食品安全事件频发,不仅给人们的健康带来了严重的危害,也给国民经济造成了巨大的损失。随着国家对食品安全监管力度的不断加大,以及感官数字化技术在食品检测中的日益普及,使得食品质量监测更加快捷、简便、准确。此外,结合虚拟现实技术的应急演练活动,打破了食品安全监管中时间、空间等多方面的限制,显示出感官数字化技术的极大优势。主要针对电子鼻、电子舌、电子眼、虚拟现实技术等感官数字化技术在应急演练中的应用进行详细的阐述。