J2EE平台上MVC设计模式在开发电子政务系统中的应用

在介绍了J2EE应用关键技术的基础上,将MVC设计模式引入电子政务系统开发中,结合一个具体的实例,详细讨论了MVC设计模式的思想、软件体系结构以及优异的表现性能。J2EE技术与该模式的结合,简化了软件的开发,提高了软件的性能和可维护性。     

基于J2EE的Web应用的MVC架构实现

设计模式在当前的工程应用中越来越广泛，MVC是软件开发中的一种重要的设计模式，J2EE则是开发高端企业级应用的成熟技术体系。在软件规模13益庞大的今天，这两种技术的结合为大型软件应用的开发提供了成功的保证。该文简要介绍了MVC模式的概念、模型，同时阐述了J2EE中与MVC相关的技术要点。并构建了一个简单、实用的Web应用框架，达到了视图、控制、模型的分层，成功实现了J2EE平台上的MVC架构。     

MVC模式架构的应用研究

MVC模式是制作软件的标准设计模式,也是开发J2EE应用程序最常用的开发模式,介绍了MVC模式的基本概念,设计出了一个J2EE应用程序。通过该实例总结出了利用MVC模式开发程序的优势:减少了开发时间;很高的可重用性;高可维护性。     

MVC在J2EE框架中的应用研究

基于B／S的软件开发需要一种科学的软件开发模式，MVC模式的设计思想为软件的健壮性、可维护性和可扩展性提供了有力的支持。文中将探讨J2EE框架与MVC模式相结合的开发方式，并通过介绍基于J2EE与MVC模式所开发的企业管理系统来说明该模式的优点。     

MVC在J2EE框架中的应用研究

基于B/S的软件开发需要一种科学的软件开发模式,MVC模式的设计思想为软件的健壮性、可维护性和可扩展性提供了有力的支持。文中将探讨J2EE框架与MVC模式相结合的开发方式,并通过介绍基于J2EE与MVC模式所开发的企业管理系统来说明该模式的优点。     

MVC设计模式在J2EE平台上的应用

MVC设计模式是设计模式中很重要的一种,在理论上实现了业务逻辑与界面显示的分离,它的提出对Web的应用开发具有重要意义。J2EE是美国Sun公司推出的一种全新的模型,已经成为最流行的开发平台之一。本文介绍了MVC模式的软件开发思想,着重阐述了J2EE和MVC模式的结合,提出了一种基于J2EE和MVC模式的Web应用开发方法。它为构造结构清晰,运行高效的基于J2EE的Web应用程序奠定了基础。     

基于J2EE支持多客户端的MVC设计模式研究

探讨了J2EE平台和MVC设计模式思想。在J2EE企业应用软件开发中，针对存在着多种类型客户端应用，引入了基于J2EE平台的支持多客户端的MVC设计模式，对该模型的实现机制和性能特点进行了探讨和研究。     

J2EE和MVC模式在校园管理系统开发中的应用

基于Web技术的B/S模式软件开发是一种常用的开发技术,MVC模式的设计思想为软件的健壮性,可维护性和可扩展性提供了有力的支持。本文以一个校园管理系统的设计实例来探讨了J2EE框架与MVC模式的相结合的开发方式。融合了J2EE框架和MVC模式优点的系统开发,使得该系统具有良好的健壮性、可扩展性。     

MVC设计模式在J2EE平台上的研究与实现

文中介绍了MVC设计模式的概念,讨论了JSP Servlet等J2EE技术,并结合了一个实例对如何使用基于MVC技术开发Web应用进行了研究.结果证明在J2EE平台上采用MVC模式进行开发,可以使软件结构更加清晰,缩短软件开发周期,提高软件的可维护性和代码复用率.因此,MVC设计模式是一种值得广泛推广使用的体系结构,它将有效地提高软件开发的效率与软件的质量.     

MVC设计模式在J2EE平台上的研究与实现

文中介绍了MVC设计模式的概念,讨论了JSPServlet等J2EE技术,并结合了一个实例对如何使用基于MVC技术开发Web应用进行了研究。结果证明在J2EE平台上采用MVC模式进行开发,可以使软件结构更加清晰,缩短软件开发周期,提高软件的可维护性和代码复用率。因此,MVC设计模式是一种值得广泛推广使用的体系结构,它将有效地提高软件开发的效率与软件的质量。     

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)

正~~     

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