虚拟现实技术在实验教学中的应用

虚拟现实技术是实验教学中最具有优势和发展潜力的一项技术，其深度应用将推动实验教学模式的改变。本文总结了虚拟现实技术的基本特征并根据高枝实验教学的现状，探讨了虚拟现实技术在工科和文科方面的应用，对如何利用虚拟现实技术加强、促进实验教学进行了分析和展望。     

电子商务中虚拟现实技术的研究

首先分析了虚拟现实技术在电子商务中应用的必然性以及在电子商务中应用的两种虚拟现实技术，并对这两种技术做了详细的介绍与分析，最后说明了每种技术所适用的领域，从而使得虚拟现实技术在电子商务领域中得以更充分的发展。     

工程三维实时漫游系统技术研究

虚拟现实技术已在许多领域有了广泛的文中应用，取得了很好的效果，但其应用系统的开发比较困难。为了利用虚拟现实技术实现工程的三维实时交互查看，分析了虚拟现实技术的基本原理，研究了当前比较可行的技术，利用3D Studio作为建模工具，利用Microaoft DirectX技术进行软件开发，实现了基于桌面系统虚拟现实技术的工程三维形象实时漫游系统，给出了模型的建立、转换及调用方法。实现的应用系统可在微机运行，达到了要求。     

虚拟现实技术及其应用研究

虚拟现实技术是二十世纪末才兴起的一门崭新的综合性信息技术，本文总结了虚拟现实技术的发展和应用．介绍了虚拟现实技术的分类，并结合具体工程实例重点介绍了桌面虚拟现实技术。     

虚拟现实技术在机器人技术中的应用与展望

本文综述了虚拟现实技术在机器人领域应用的最新进 展．分析了虚拟现实技术的研究背景和状况．重点介绍了作为遥操作界面、机器视觉三维表 示、系统仿真方面的应用实力和发展状况．分析了相应的发展前景，并对当前虚拟现实技术 应用中出现的问题提出了建议．     

虚拟现实技术及其在教学中的应用

由于虚拟现实技术能够解决学习媒体的情景化及自然交互性的要求，从而在教育领域内有着极其巨大的应用前景。本文阐述了虚拟现实技术的基本特征、分类及其在教学中的应用，希望能对今后的教学模式产生一定的影响，并促进虚拟现实系统的开发和应用。     

虚拟现实及其在网络中的实现

虚拟现实是一种新型信息技术，它在许多领域得到了广泛的应用。该文介绍了虚拟现实的特征，系统基本构成和分类，以及实现虚拟现实的关键技术，并对虚拟现实在网络中的应用技术WEB3D进行了探讨，介绍了它的代表技术，并提出了实现WEB3D的方法和工具，最后介绍了一种基于VRML-JAVA的网络虚拟现实系统。     

基于Visual C#.NET与3DSTATE实现虚拟现实

虚拟现实技术在军事、航空航天、数字博物馆、虚拟人等领域得到了广泛的应用。但是，由于虚拟现实技术本身的复杂性，使得实现虚拟现实一直以来都是一项较为困难的工作。3DSTATE引擎是一种较新的虚拟现实开发工具，能快速和简便的实现基本的虚拟现实功能，在介绍3DSTATE引擎及3DWoddBuilder的基础上，着重讨论了Visual C#．NET与3DSTATE引擎相结合实现虚拟现实的方法和步骤。     

虚拟现实技术在视景仿真系统中的应用

利用虚拟现实技术可以在仿真系统中构建出逼真的三维虚拟环境。讨论了虚拟现实技术的涵义和特征，重点研究了在实现一个视景仿真系统时所用到的关键虚拟现实技术，并给出了虚拟现实技术在一个军事模拟训练系统的三维战场视景仿真中的具体应用。     

虚拟现实技术在微机电系统中的应用

该文根据虚拟现实技术的内涵、主要特征和相关技术，按照微机电系统的特点和发展目标，研究微机电系统对虚拟现实技术的需求及其应用，研究虚拟现实技术与微机电系统的交叉融合及互动发展，提出将虚拟现实技术应用于微机电系统的研究、设计、教学、培训；提出将微机电系统应用于虚拟现实系统中。     

Call for Papers The 6^th International Conference on Grid and Cooperative Computing

Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

法律信息库系统

本文分析了法律数据库的结构和特点，介绍了采用面向对象设计方法和超文本数据库技术开发和实现法律信息库系统将作为重要网络资源之一为不同用户进行法律咨询服务。     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

International Journal of Automation and Computing Table of Contents

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Information for authors

正SCIENCE CHINA Information Sciences(Sci China Inf Sci),cosponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China,and published by Science China Press,is committed to publishing highquality,original results of both basic and applied research in all areas of information sciences,including computer science and technology;systems science,control science and engineering(published in Issues with odd numbers);information and communication engineering;electronic science and technology(published in Issues with even numbers).Sci China Inf Sci is published monthly in both print and electronic forms.It is indexed by Academic OneFile,Astrophysics Data System(ADS),CSA,Cabells,Current Contents/Engineering,Computing and Technology,DBLP,Digital Mathematics Registry,Earthquake Engineering Abstracts,Engineering Index,Engineered Materials Abstracts,Gale,Google,INSPEC,Journal Citation Reports/Science Edition,Mathematical Reviews,OCLC,ProQuest,SCOPUS,Science Citation Index Expanded,Summon by Serial Solutions,VINITI,Zentralblatt MATH.     

Erratum to: Fast global kernel fuzzy c-means clustering algorithm for consonant/vowel segmentation of speech signal

正Erratum to:J Zhejiang Univ-Sci C(ComputElectron)2014 15(7):551-563doi:10.1631/jzus.C1300320The original version of this article unfortunately contained mistakes.Algorithm 6 should be as follows:Algorithm 6 FGKFCM-F clustering Input:(1)X={x_1,x_2,…,x_N},,x_iR~d,i=1,2,…,N,the dataset;(2)C,1C≤N,the number of clusters;(3)ε0,the stopping criterion;     

Journal of Zhejiang University-SCIENCE C (Computers & Electronics) Total contents

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A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.