浅议MVC设计模式在JavaWeb中的作用

随着互联网的发展,基于B/S结构的Web开发技术的不断推广和应用,MVC设计模式在Java Web开发中的应用越来越广泛和成熟,本文从宏观的角度讨论了MVC设计模式在Java Web开发三层架构和开发框架中的影响,强调了MVC通过分层设计的理念,实现了分层解耦、代码复用,更方便维护和测试软件系统的目的。     

基于JSP的MVC开发模式研究及应用

JSP是基于Java的技术,用于创建支持跨平台与跨Web服务器的动态网页。本文阐述了基于JSP的两种MVC基本开发模式和一种MVC改进型开发模式。重点从设计角度和开发结构方面进行了深入的研究,给出了一个依据MVC改进型模式实现的开发框架和主要源码。     

MVC模式在高校科研档案管理信息系统中的应用研究

介绍了高校科研管理系统的发展、系统设计目标和主要功能模块,研究了MVC的架构、设计模式及其优点和基于MVC模式的Web应用开发框架Struts,同时对基于MVC设计模式如何利用Java的多种技术开发Web应用进行了研究,最后分析使用Struts框架开发科研档案管理系统的实现方法.     

JSF的研究及其应用

JavaServer Faces（JSF）是一种用于构建Web应用程序的新标准Java框架。它提供了一种以组件为中心来开发JavaWeb用户界面的方法,从而简化了开发。JSF是真正的MVC模式,它的侧重点是web表现层,提供了丰富的页面开发控件,而且支持控件的开发方便、灵活,弥补了Java在Web开发方面的不足。     

MVC架构模式在Java开发中的应用

随着MVC架构模式逐渐被应用于Java开发与应用中,有效的提高了系统开发的水平,给系统的开发以及企业的生产、人们的生活都带来了极大的便利。因此,企业开始更加重视MVC架构模式之于Java的开发。所以本文从MVC架构模式的开发过程入手,在理解MVC架构模式的基础上,再将与Java开发有机的结合起来。再通过对于MVC加工的设计开发实例,来充分的展示MVC架构模式在Java开发中的应用与发展进步。     

MVC&MVP集成模式在RIA开发中的应用

Web开发正从基于MVC的Web架构向着被称为RIA架构发展,RIA表现出来的丰富的用户界面越来越受到吸引。针对MVC模式与MVP模式的特点与不足,作者提出了MVC&MVP集成模式,并尝试了在RIA开发中进行应用。     

基于MVC设计模式构建JSP Servlet+EJB的Web应用

简要介绍了MVC的设计模式,讨论了JSP,Servlet和EJB技术的概念,同时对基于MVC设计模式如何利用Java的多种技术开发Web应用进行了研究,最后给出一个身份认证的Web应用系统设计和开发的实例.     

Struts、Spring和JSF框架的比较与分析

随着J2EE技术的发展,产生了许多优秀的基于MVC模式的Java Web框架.如何根据实际项目的特点选择合适的Web框架进行项目开发成为系统开发人员面临的一个重要挑战.为此,本文对Struts、Spring和JSF三种框架的特点进行了深入比较分析和探讨.     

基于MVC框架的ASP.NET研究

ASP.NET支持三种模式：WebPages、MVC（ModelViewControl er）以及WebForms,MVC是较受欢迎的设计模式,在ASP.NET3.5基础之上,ASP.NETMVC提供了一个新的模型-视图-控制器框架;在Web应用开发技术中,越来越多的软件开发采用了MVC模式。本文将通过对ASP.NET MVC框架的研究来改革ASP.NET的教学内容将其从传统的ASP.NETWebForms模式转向MVC开发模式。     

在Web开发中结合MVC模式和XML应用研究

本文通过具体事例，论述了在Web应用开发中如何结合MVC模式和XML来开发Web应用程序，同时还讨论了MVC模式的技术模型和XML的特点。     

Low doses of a red wine ingredient figh diabetes in mice

Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said.     

To serve and promote science development via innovation

CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing.     

Tracing the origin and early radiation of birds——Paleornithologist ZHOU Zhonghe

With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants."     

Students' Reactions to the Introduction of Videoconferencing for Classroom Instruction

This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors.     

Molecular motor assembly of a biomimetic system

Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction.     

Cooler temperatures inductive to locust outbreaks

Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007.     

Exploring Multiplexity: Social Network Structures in a Computer-Supported Distance Learning Class

A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction.     

The Role of Intermediating Institutions in the Diffusion of Electronic Data Interchange (EDI): How Industry Associations Intervened in Denmark, Finland, and Hong Kong

Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies.     

The Information Environment and Universal Service

This essay focuses on universal service and the Internet as means to support social and political participation. The emphasis on access to telecommunications systems in conventional approaches to universal service is contrasted with access to content. A model of the information environment is described that accounts for the roles of content and conduit, both of which are necessary conditions to achieve true access. A method is outlined for employing information indicators to observe or measure the information environment.     

How Electronic Publishers are Protecting Against Piracy: Doubts About Technical Systems of Protection

The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means.