一种实用化J2EE模型构架的分析和研究

本文主要通过介绍J2EE模型的基本概念，以及对其核心构架的系统分析，提出了一种开发企业级Web应用服务的实用化J2EE模型构架，并结合了这些构架在实际项目中的使用经验，详细分析了这种Web应用开发模式的框架模型以及具体开发流程。     

基于J2EE的分布式计算机联锁控制系统

本文提出了不仅仅在硬件上．而且在软件上实现真正的分布式控制的基于J2EE的计算机联锁控制系统，阐述了如何用J2EE构架来架构这种计算机联锁控制系统。J2EE不仅是一种分布式的多层次的软件体系结构．而且具有高可用性、可靠性、安全性、可移植性和可伸缩性的特点，这正好满足了计算机联锁控制系统的要求。因此．采用J2EE构架来架构计算机联锁控制系统就成为了比较理想的选择。     

基于轻量级J2EE构架的高校教务管理系统的设计与实现

J2EE技术在业界内被一致认为是非常优秀的软件构架,并在许多大型项目中得到了广泛应用,本文分析了基于J2EE技术的表现层开源构架Struts,业务层开源构架Spring和数据持久层开源构架Hibernate的相关技术特点,并把这种基于Struts Spring Hibernate的轻量级J2EE构架,在高校教务管理系统的开发中得到了实现.     

EJB2.0中的JMS异步消息机制的实现及应用

从WEB应用的角度出发，详细介绍了J2EE构架中基于EJB2.0的JMS与MessageDriven Bean具有的特色和优势，举例说明了采用JMS异步消息机制的实现方法及应用，对采用J2EE构架的Web应用的研究开发人员有重要的帮助。     

J2EE架构在网上股票交易系统中的应用

主要阐述如何用J2EE构架来架构网上股票交易系统。J2EE不但具有高可用性、安全性、可靠性和可伸缩性,并且能保证与现有系统的集成性和与其它系统的互操作性,这正好满足了网上交易的要求。因此,采用J2EE构架来架构网上股票交易系统就成为了比较理想的选择。     

J2EE架构在网上股票交易系统中的应用

主要阐述如何用J2EE构架来架构网上股票交易系统.J2EE不但具有高可用性、安全性、可靠性和可伸缩性,并且能保证与现有系统的集成性和与其它系统的互操作性,这正好满足了网上交易的要求.因此,采用J2EE构架来架构网上股票交易系统就成为了比较理想的选择.     

一种基于J2EE、Spring和Hibernate的轻量级EAI构架

本文结合J2EE、Spring与Hibernate的特点,提出一种以J2EE为基本框架、以Spring作为业务方法层组件、以Hi-bernate作为持久层组件的面向中小企业的轻量级EAI构架,并对该构架主要环节的关键技术实现作了分析。     

基于J2EE的GIS与企业应用系统集成方案探讨

企业应用系统中使用地理信息越来越多,GIS与企业应用系统的集成尤显重要。本文分析了GIS数据源特征和J2EE的体系结构,提出了J2EE对GIS数据的访问模式,构架了基于J2EE的GIS与企业应用系统集成体系。     

基于J2EE的企业信息平台的设计与实现

简要地介绍了Sun公司提出的J2EE的企业平台架构，以赤峰市富龙集团企业信息平台构架为例，探讨了基于J2EE的企业信息平台架构机理，并重点分析讨论了信息平台中的消息中心和规则库的设计与实现。     

XML与XSL技术在J2EE构架中的应用

XML扩展标记语言与XSL样式表达语言的应用是一种真正的数据与表现分离的机制，由于其特有的优势，在J2EE构架中有着重要而广泛的应用，可以真正解决动态的数据处理，业务流异步消息机制，动态的界面生成等关键的应用技术问题。本文就有关的技术作了比较详细的研究并进行了实例应用，相信会对基于J2EE构架的开发应用有重要的帮助。     

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.     

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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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