构建数字化学习社区的一种新技术

通过课题研究,开展用Blog技术构建数字化学习社区的实践,文章对其可行性进行了分析,强调了构建的原则,阐明了构建的优势,并对系统的开发及试运行进行了说明。三年的实证研究认为Blog技术是建设数字化学习社区非常适用的一种新技术。     

Blog研究

Blog信息源和信息量迅速增长,并已通过频繁的链接和信息交互在互联网上构建了一个动态且紧密的社会网络,成为现实世界一个重要的信息来源.目前,Blog领域的研究主要集中在Blog的定义与识别、内容挖掘、社区发现、重要性分析、Blog搜索和作弊Blog识别等几个方面.大部分研究采用或借鉴了链接分析、自然语言处理等方面的技术和方法,也提出了一些针对Blog领域的特定方法.分析和比较了Blog领域的相关研究,并且讨论了研究中存在的问题,展望了未来的研究方向.     

Blog：承载我们的教育理想

2003年炒热了几个词汇，而Blog就是其中之一。也是在2003年，Blog进入我国中小学教育实践中，越来越多的教师开始使用Blog。用Blog来进行叙事研究；用Blog来记录研究性学习的过程；用Blog来进行档案袋过程性评价；用Blog来开展班集体活动；用Blog来学习和探究，做一位科研型、学习型教师;……     

数字化社区教育资源服务体系的构建探析

社区教育资源是公众终身学习得以顺利开展的重要条件,其体系构建也是一个长期的过程。计算机网络技术大范围普及后,以数字化为切点来构建社区教育资源就成为教育领域关注的重点。文章就数字化社区教育资源建设的意义和途径进行了探讨,以期为现代国民教育体系的构建提供相应的理论参考。     

数字化社区教育资源服务体系的构建探析

社区教育资源是公众终身学习得以顺利开展的重要条件,其体系构建也是一个长期的过程。计算机网络技术大范围普及后,以数字化为切点来构建社区教育资源就成为教育领域关注的重点。文章就数字化社区教育资源建设的意义和途径进行了探讨,以期为现代国民教育体系的构建提供相应的理论参考。     

基于Web GIS社区智能化与数字化系统集成平台

社区作为城市的最基本组成单元，也是城市居民最集中的区域，大多住宅社区配备有智能化与数字化系统。由于社区数字化和智能化系统集成涉及异构网集成、各类智能化与数字化设备通信协议千差万别等技术难点，因而这些资源并没纳入城市网格化管理系统。本文以构建基于Web GIS社区智能化与数字化系统集成平台关键技术进行阐述，通过集成实现社区数字化和资源重组，填补数字城市网格化管理空白。     

Web2.0环境下的高校虚拟学习社区设计

虚拟学习社区作为一种数字化的学习环境,在高校中广泛应用于正式学习和非正式学习,利用Web2.0技术进行改造,可以解决传统虚拟学习社区中寻找学习伙伴与归属感难、分享学习资源难等问题.综合分析了Web2.0具有实现个性化、明确归属感、变革信息源等技术特性,结合了学习者的需要和虚拟学习社区的基本结构.设计了虚拟学习社区的五大功能模块,提出了高校虚拟学习社区的结构模型.基于Web2.0技术构建的虚拟学习社区模型基本可以通过开发实现,并能在高校有效应用     

一个基于本体的语义Blog原型系统的设计与实现

将语义Web技术应用于Blog系统的构建，我们设计并实现了一个称为“WOW”的基于Web本体的Blog原型系统。该系统不仅实现了Blog的常用功能，而且实现了对Weblog条目的语义查询。本文介绍了WOW系统的分析、设计及实现，着重介绍了Web本体技术在语义Blog系统中所起到的作用。     

教亦多术矣,运用在乎人——专题Blog环境下小学语文的研究与实践

深入研究Blog在学校教学中的应用,为开展自主学习,合作学习、探究学习提供丰富多彩的网络环境和有力的学习工具,是目前各地进行教学研究的主流课题.我们在常州"十五"市级课题<网络环境下构建以学生为主体的自主学习模式的研究和实践>的基础上,又进一步开展了中央电教馆"十一五"专项课题((专题Blog网站在教学中的应用研究>的研究.     

Blog：信息化教育中简便有效的学习工具

随着教育信息化实践的深入，如何利用计算机和网络进行更有效的学习，是每个教育工作者和学习者都必须关注的焦点．新一代的网络工具Blog（博客）是一种理想的学习工具。文章阐述了Blog的概念，Blog在信息化教育实践中的应用以及如何创建Blog。     

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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