基于AXIS的Java Web Service的研究与实现

Web Service是Web上数据和信息集成的有效机制.Web Service的新型架构,Web Service的高效执行方式,Web Service与其他成熟技术的有机结合以及Web Service的集成是解决现实应用问题的重要技术.文章详细分析了AXIS体系结构,及其处理SOAP消息的流程.通过Web Service的创建、发布和调用,讨论了Web Service的具体应用.     

基于Rails的RESTful Web Service研究与实现

随着Web 服务的快速发展,基于REST(Representational State Transfer)风格的Web Service越来越受到业界的关注.在实现RESTful Web Service的众多框架中,Rails完整实现了MVC并对RESTful Web Service的开发作了极大的封装和简化,使得开发人员用Rails实现RESTful Web Service变得容易.对RESTful Web Service特征和Rails框架结构进行了概述,分析了Rails实现RESTful Web Service的原理,在此基础上结合实例给出了基于Rails的RESTful Web Service以及RESTful Web Service客户端的开发步骤和方法,并且利用Ruby进行了实现.     

基于替代和补偿的嵌套Web Service事务模型

作为一种崭新的并行计算模式,Web Service以其平台独立性、松耦合及自治性等优势,在涉及复杂业务流程的事务性服务行业具有极大潜力和需求.考虑到Web Service环境的限制和特征,传统事务模型无法适应.从Web Service事务系统体系结构出发,分析Web Service的特点及Web Service事务性应用在开放的Web环境下的特性,提出了一个基于替代和补偿的嵌套Web Service事务模型,阐述了结合替代和补偿的Web Service事务结构和处理,给出了形式化描述.     

基于Delphi的Web Service应用开发初探

本文概述了Web Service的特点和核心要素,依据Delphi对Web Service的支持,给出了基于Delphi 开发Web Service的过程,并用一个实例说明了开发Web Service应用程序的步骤和方法.     

Java与Restful Web Service

近年来Web服务领域发生着翻天覆地的变化,继传统的XML-RPC风格的Web Service之后,一种新的风格,REST被应用于Web Service.本文主要介绍了Rest构架风格,以及现在Java开发Restful Web Service的主要方式,以及如何实现Restful Web Service的Java和Ajax客户端,最后介绍了Restful Web Service的描述语言WADL.     

浅谈Web Service技术

Web Service作为一种新的分布式组件技术,实现了真正意义上的平台独立性和语言独立性.文章介绍了Web Service的概念、特点、体系结构以及Web Service的关键技术,重点讨论了Web Service的技术支持平台.     

企业级Web Service体系结构研究与部署

Web Service是基于标准的应用集成方式,是下一代Web的主流技术.介绍了WebService相关协议、标准和应用领域,分析了Web Service基本体系结构,讨论了企业级Web Service的体系结构及其部署.     

基于Web Service进行信息共享和集成的关键技术

由于Web Service是基于标准协议和规范(包括HTTP、SOAP、XML、WSDL、UDDI等),并且平台独立和语言独立的,因此Web Service已成为基于Internet网进行信息交换、信息共享、信息集成和互操作的主流技术,在电子商务和电子政务中被广泛应用.详细介绍了基于Web Service进行信息共享和集成的关键技术--Web Service异步调用技术和动态调用技术.通过Web Service异步调用技术,实现了Web Service的分布式并行执行,提高了计算的效率.通过Web Service动态调用技术,使整个软件系统具有可扩充性,并且易于维护,能满足Internet环境动态性的要求.     

Web Service同传统分布式技术的比较分析

Web Service作为一种基于XML的、新的Internet分布式应用标准,近年来得到广泛的关注和支持.对Web Service的体系结构及其各个组成部分进行了分析研究,并同传统的分布式技术DCOM,CORBA,JAVA RMI进行了比较,从而得出Web Service同传统分布式技术的一些优劣对比.在此基础上提出发展Web Service并不是要摒弃传统分布式技术,而应当在实践中整合新旧标准以求更好地使用和发展Web Service.     

基于多Agent技术的Web Service模型研究

为了适应Intemet上的信息膨胀,提高Web Service的服务效率和灵活性,把Agent技术引入到Web Service模型中.介绍Web Service的基木慨念和模型,阐述了Agent技术及其特点,提出基于多Agent技术的Web Service模型,给出了Web Service模型中三种角色的详细没计,最后说明此模型的工作过程和优点.     

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.