基于Struts和Hibernate的Web应用开发

Struts框架在模型部分的实现存在JDBC连接数据库复杂、层间高耦合和难维护等问题。为此,提出一种整合Struts和Hibernate的Web应用开发方案,可实现层间的松散耦合和易维护,降低业务模型开发难度。通过学生管理系统开发实例的部分代码和运行界面说明该方案的整合应用过程,并验证其可行性。     

用Struts和Hibernate构筑Web应用开发策略

当今越来越多的Web应用是基于MVC设计模式的.此种设计模式提高了应用系统的可维护性、可扩展性和组件的可复用性.Apache开源组织提供的Struts框架充分体现了MVC架构.Hibernate实际上是一个用对象编程思维来操纵数据库的解决方案.提出了一种基于Struts和Hibernate架构的Web应用开发策略.MVC架构中,模型、视图和控制器3个部分中的模型部分（数据持久层）用Hibernate实现,视图和控制器的实现依托于Struts框架.这种策略真正实现了层间的松散耦合.     

基于Struts和Hibernate架构的应用开发及实现

分析了Struts框架和Hibernate技术的功能及优势,提出基于MVC模式将Struts和Hibernate相结合并以一个网上书店为例,用Struts构建整体框架,Hibernate技术实现持久层,完成业务层和数据库层之间的交互,给出了具体设计过程和实现细节.这两种架构相结合很好地解决了系统的开发效率低、不易于维护、低耦合及可移植性差等问题     

Struts2+Hibernate框架的整合设计和实现

目前,在Java Web开发方向,Java EE平台是面向企业级开发的首选技术。其中,Struts2框架基于MVC设计模式,实现了显示层、控制层和业务逻辑层。而基于ORM技术的Hibernate框架对JDBC提供了轻量级的对象封装,把传统的对数据库的操作转为对对象的访问。因此整合Struts2+hibernate框架的系统架构是Web应用开发的至上之选。     

基于struts框架的林政加工厂管理系统的开发

随着Internet及全球信息网应用的快速发展,WEB应用已逐步走向企业办公自动化,极大的方便了现代企业处理日常事务,B/S模式的方便性以及安全性越来越受到人们的青睐.本林政加工厂管理系统采用B/S模式,利用Struts框架和Hibernate技术的结合来开发.相对于使用JDBC和SQL来手工操作数据库,Hibernate可以大大减少操作数据库的工作量.     

基于Struts框架和Hibernate对象的WEB应用

Struts作为目前非常流行的MVC模式的WEB框架,却存在着持久层开发的问题.文中介绍了一种O/R Mapping工具Hibernate,它通过其强大的O/R映射功能将Java对象同存放于关系数据库中的数据进行映射,避免了开发人员采用JDBC的方式大量使用SQL语句对数据库进行操作,可以让Java程序员能够使用面向对象编程的思维来操作数据库,能够提供更加灵活的业务逻辑.这样结合起来节约了开发WEB站点的成本,同时也提高了工作的效率.这里提供了一个实例讨论了如何具体实现Struts框架和Hibernate对象相结合进行WEB应用的开发.     

基于Struts和Hibernate的缺陷管理及度量系统

Struts框架是基于MVC的设计模式,具有很高的可配置性.Hibernate对JDBC提供了轻量级的对象封装.把这两种框架有机结合,以Struts为表示层框架,以Hibernate为数据持久层框架,设计并实现了缺陷管理及度量系统,以部分模块为例说明这两种框架的结合在Web开发中的应用.     

基于框架的Web系统开发研究

为大幅度缩短Web系统的开发周期,同时提高系统运行可靠性,研究了当前流行的Struts及Hibernate两个框架技术.基于模型-视图-控制器(model-view-controller,MVC)设计模式进行系统开发,Struts框架用于Web应用的表示层实现,同时基于Hibernate框架完成了对象和关系之间的映射,从而实现了业务层和数据库层之间的交互.该软件开发模式大大提高了框架可复用性,降低了组件之间的耦合,构建的应用程序更易于测试.最后以实例表明了该方法的可行性.     

基于Struts和Hibernate框架的Web应用的设计与实现

基于J2EE平台的框架技术是目前开发Web应用的主流技术。其中,Struts框架基于MVC设计模式,清晰地划分了控制部分、业务逻辑和视图,实现了各层之间的解耦;而Hibernate对JDBC提供了轻量级的对象封装,降低了业务模型部分开发的难度。整合这两种框架的J2EE架构是Web应用开发的完美选择。本文以某企业办公系统E-WORK的开发为背景,重点阐述了Struts和Hibernate框架技术,并通过分析这两种框架各自的优缺点,设计了整合Struts和Hibernate框架技术的E-WORK系统的J2EE架构。最后以系统中一个模块的实现为例说明系统开发过程。     

基于MVC模式的远程评议系统的设计与实现

分析了MVC模式的特点,介绍了将Struts和Hibernate结合来实现MVC模式的框架,并以远程评议系统为例,描述了Struts和Hibemate相结合的实现方案.用Struts构建该系统的整体框架,用Hibernate实现持久层,完成业务层和数据层间的交互.给出了远程评议系统的总体设计和具体实现.这两种框架相结合很好的解决了系统开发效率低、不易维护等问题.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

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.     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

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.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

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.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。