多Agent技术在构建Web远程教育系统中的应用

远程教育作为伴随着计算机技术、网络技术和多媒体技术的发展而兴起的全新的教学方式日益普及,然而随着高新技术的发展,传统的远程教育方式已无法满足需要,因此研究具有智能的远程教育系统是一个趋势.文章通过对传统远程教育方式的分析,指出其不足,并在此基础上将Agent技术引入远程教育系统中,提出了一种基于Web的多Agent智能型远程教育系统框架.     

基于WWW多媒体远程教育系统的开发

计算机、网络和多媒体等技术的广泛应用,给教育界带来了前所未有的发展机遇,利用这些技术来发展远程教育已成为教育工作者的研究焦点.基于WWW多媒体远程教育系统是结合我校的实际情况,利用Web、数据库和多媒体等技术开发出来的系统.     

基于多Agent的现代远程教育系统框架研究

远程教育作为伴随着计算机技术、网络技术和多媒体技术的发展而兴起的全新的教学方式日益普及,然而随着高新技术的发展,传统的远程教育方式已无法满足需要,因此研究具有智能的远程教育系统将是一个趋势。通过对传统远程教育方式的分析,指出其不足之处,并在此基础上将Agent技术引入远程教育系统中,提出了一种基于多Agent的智能型远程教育系统框架。     

基于事务的Web日志挖掘在远程教育中的应用

远程教育的生存和发展将取决于能否提供个性化的教学服务,Web日志挖掘技术使个性化的远程教育成为可能.本文介绍了一种基于事务的Web日志挖掘方法,并对其在个性化远程教育系统中的应用和实现作了探讨和研究.     

远程教育系统及其应用

远程教育是随着当今计算机及网络技术的发展而产生、发展的。Ｉｎｔｅｒｎｅｔ的应用和普及为远程教育的发展提供了新的机遇。本文分析了远程教育系统的基本原理,提出了一个远程教育系统的工作模型,它包括一个基于Ｗｅｂ 的远程教育系统和一个基于视频会议的实时教育系统。本模型已初步实现,并在实际教学中取得了良好效果     

基于网格的现代远程教育系统模型研究

远程教育模式经过不断发展,现已经成为以互联网和多媒体为主要媒介的现代远程教育,真正突破了学习时间和地点的局限.而随着网格技术的发展,又为现代远程教育模式的构建提供了新的技术。基于网格技术,可以在不增加新资源的情况下,把现有的远程教育资源汇聚起来,为远程教育用户提供一种随处可得的、可靠的、标准的同时还是经济的远程教育能力。因此,本文建立了一种在网格技术支持下的现代远程教育系统模型。     

基于Agent的网络远程教育系统研究

利用Agent技术增强网络远程教育系统的智能性和适应性是现代远程教育的发展趋势,本文根据Agent的特性,及其对网络远程教育系统智能化的强大支持能力,建构了一个基于Agent的网络远程教育系统结构模型,期望对我国远程教育智能化的发展有所裨益。     

数据挖掘在现代远程教育中的应用

远程教育的生存和发展在很大程度上取决于能否提供个性化的教学服务,数据挖掘技术使个性化远程教育成为可能。本文就数据挖掘技术在个性化远程教育系统中的应用作了探讨和研究。     

远程教育COD系统的实现方案

远程教育是指利用网络技术实施教育的一种现代教育形式。新技术的发展和终身教育的兴起,促进了远程教育的高速发展,世界各国都非常重视远程网络教育体系的构建和远程网络教育基础设施建设。对远程教育实现方案进行研究,具有很重要的意义。文中首先介绍了远程教育的特点;然后将COD系统的运行原理应用于远程教育中,设计了远程教育COD系统的详细结构和数据库结构;最后提出了系统的实现方案。     

远程教育的发展及其相关问题的探讨

本文首先介绍了远程教育的特点,接着说明了远程教育的发展模式。然后论述了远程教育的支撑技术和典型的应用系统。最后详细介绍了国内远程教育的状况,并分析了存在的问题。     

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.     

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.     

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.     

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.     

The Distributed Time-Triggered Simulation Scheme: Core Principles and Supporting Execution Engine

Distributed real-time simulation is a young technology field but its practice is under increasing demands. In recent years the author and his collaborators have been establishing a new approach called the distributed time-triggered simulation (DTS) scheme which is conceptually simple and easy to use but widely applicable. The concept was initiated in the course of developing a new-generation object-oriented real-time programming scheme called the time-triggered message-triggered object (TMO) programming scheme. Some fundamental issues inherent in distributed real-time simulation that were learned during recent experimental studies are discussed along with some approaches for resolving the issues. An execution engine developed to support both the TMOs engaged in control computation and the TMOs engaged in DTS is also discussed along with its possible extensions that will enable significantly larger-scale DTSs.     

Software-Konfigurationsmanagement in großen Softwareprojekten

Zusammenfassung Mit zunehmender Größe der Softwaresysteme verschärfen sich die für die Software-Herstellung typischen Probleme: Beherrschen großer Objektmengen, Erhalten der Systemkonsistenz, Kontrolle der ständigen Änderungseinflüsse und Gewährleisten einer langen Lebensdauer. Die Disziplin Konfigurationsmanagement bildet den methodischen Ansatz, diese Probleme besser zu beherrschen. Software-Konfigurationsmanagement faßt die Herstellung von Softwaresystemen als eine Abfolge von kontrollierten Änderungen an gesicherten Zwischen- und Endergebnissen auf. Dargestellt werden die Objekte und Funktionen des Software-Konfigurationsmanagements sowie die hierfür in großen Software-Projekten benötigten Methoden, Instanzen und Hilfsmittel.     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and     

Editorial:Brain-machine interface(BMI) and cyborg intelligence

正Brain-machine interfaces(BMIs)aim at building a direct communication pathway between the brain and an external device,and represent an area of research where significant progress has been made during the past decade.Based on BMIs,mind information can be read out by neural signals to control     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate     

SCIENCE CHINA Information Sciences SUBJECT INDEX TO VOLUME 57(2014)

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