SAX中设计模式分析

XML作为下一代的网络数据传输标准,对其的解析显得尤为重要。文章简要介绍了XML解析中的SAX解析技术,着重讨论了SAX中的设计模式。     

基于SAX的文档解析技术的研究和实现

XML在Java应用程序中的普遍应用,使得对XML解析技术的研究更加的重视。文中讨论了SAX解析技术,对SAX的解析原理进行了分析,并通过实例展示了SAX的文档解析方法。然后通过对SAX和DOM两种解析技术的对比,指出了SAX的性能优势和适用环境。     

XML文件解析中SAX和DOM的结合应用

针对目前XML文档的两种解析方法SAX和DOM各自的特点,探讨了在哪些情况下适宜将两种解析方法结合应用对文档进行解析,并给出了SAX和DOM结合应用的一般方法,最后对单纯采用DOM和两种方法结合解析XML文档的性能进行了比较。实验结果表明,将SAX和DOM结合使用,在解析大XML文档时,可以极大地提高解析程序的性能。     

XML解析技术在电子白板保存与打开中的应用

通过介绍XML的定义,XML的历史渊源;以及2种主要的XML解析技术:DOM(Document Object Model)解析技术SAX(Simple API for XML)解析技术;重点阐述XML解析技术在电子白板保存与打开中的应用.     

在JSP中用SAX解析XML文件

本文介绍了SAX接口 ,并用实例说明了如何在JSP中用SAX来解析XML文件     

基于SAX的XML文档解析和存储技术应用

XML作为一种中间的数据接口,已经显示出其不可替代的重要性.SAX使得Web应用程序能方便地解析和利用XML文档,同时使用哈希表存储数据可以使外部程序方便地调用解析XML文档后的数据.文中首先分析了SAX编程接口,对XML文档的解析机制进行了较深入的探讨;然后提出了一种使用哈希表存储XML数据以供外部程序调用的实现技术.     

基于SAX的XML文档解析和存储技术应用

XML作为一种中间的数据接口，已经显示出其不可替代的重要性。SAX使得Web应用程序能方便地解析和利用XML文档，同时使用哈希表存储数据可以使外部程序方便地调用解析XML文档后的数据。文中首先分析了SAX编程接口，对XML文档的解析机制进行了较深入的探讨；然后提出了一种使用哈希表存储XML数据以供外部程序调用的实现技术。     

XML解析技术研究

介绍了XML解析器的研究动向,对比分析了XML的DOM和SAX解析方法,在此基础上设计和实现了一个XML集成编辑解析器,讨论了一个XML集成解析环境的实现及系统各功能模块的划分。给出了编辑解析器系统结构图。     

脚本语言PHP的XML应用支持

探讨脚本语言PHP中对XML的应用支持,分析两种XML解析的PHP实现方式,即应用基于SAX的XML解析器Expat,应用Expand DOM类完成XML解析,表现PHP对XML应用支持的灵活性.     

基于索引的高性能XML解析器研究

传统的XML解析方法只是从内存模型以及API的角度规范了解析XML文档所遵循的规则,不仅难以看到XML解析的本质,在性能上也难以满足高并发系统的要求.本论文针对XML解析过程中所出现的各种操作,以集合的语言定义了服务集元操作Metaset,从而赋予了XML解析的逻辑语义.在实现过程中沿用了VTD-XML中的索引结构,实现了高性能的XML解析方法.最后与主流的XML解析器DOM、SAX、STAX作了性能比较.证明了本文观点的正确性.     

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.