基于.NET2.0串行端口资源的PC机与FCS实验系统串口通信的设计

.NET2.0新增Serial Port类为串口通信提供了强大的工具。该文重点阐述将DCS改造为FCS实验装置后,上位机是如何利用这一工具实现与控制系统之间的数据通信,从而证明采用C#串行通信类可以使串行通信程序的设计具有更强的实用性和灵活性,使串口数据传输变得更方便和可靠。     

基于B/S模式和J2EE架构的工商网站研究与设计

本文介绍了B/S结构的设计与实现以及J2EE架构的体系结构和优势,并结合实际经验,设计开发了基于B/S模式和J2EE架构的工商网站,降低了办公成本,提高了工作效率。     

基于JXTA的课程辅助教学系统的研究与实现

本文叙述了P2P网络的概念、发展历史以及它与传统网络模式的区别,探讨和分析了JXTA技术,阐述了基于JXTA技术对分布式课程辅助教学应用系统JBCAT的研究、设计与实现。     

基于J2EE的电力市场交易运营系统——发布和申报子系统的设计与开发

电力市场运营系统是为了适应我国电力市场化改革的需要,部署在电力调度(交易)中心的一套自动化系统,本文介绍该系统的信息发布与数据申报子系统的设计开发与运用到的关键技术。     

一种基于拦截器的J2EE容忍入侵框架的研究与设计

本文给出了一种基于拦截器的容忍入侵框架的设计,该框架设计包括容侵服务提供者设计和容忍入侵服务管理者的设计,目的是将服务提供与服务管理分离,实现了容忍入侵服务的可集成性、可扩展性。     

基于NS2的IEEE802.15.4协议的研究与仿真

本文在分析IEEE802.15.4协议的基础上,重点研究了星型网络拓扑中在信标使能模式下信标级数的改变、节点数的增加以及发送数据方式的改变对能量剩余、端到端延时、平均分组递交率这三个性能参数的影响,并在NS2仿真环境下进行了仿真。为今后在应用中更好的配置协议和信标级数、以期在开发应用中达到更可靠、节能的效果提供了理论基础。     

Study on E-commerce system architecture based on MVC model and J2EE platform

The paper discusses the concept and basic theory of MVC design pattern in detail. And J2EE technique system which is often used in the advance enterprise application is also introduced. Based on electronic commerce traditional application architecture, the MVC design pattern and J2EE technique are combined and a new electronic commerce application system architecture is put forward. The architecture improves the maintainability and reliability of system, and capability of repeat use in increased. Therefore the architecture will influence today＇s system technology of E-commerce strongly.     

Safe design of high-performance embedded systems in an MDE framework

In this paper, we use the UML MARTE profile to model high-performance embedded systems (HPES) in the GASPARD2 framework. We address the design correctness issue on the UML model by using the formal validation tools associated with synchronous languages, i.e., the SIGALI model checker, etc. This modeling and validation approach benefits from the advantages of UML as a standard, and from the number of validation tools built around synchronous languages. In our context, model transformations act as a bridge between UML and the chosen validation technologies. They are implemented according to a model-driven engineering approach. The modeling and validation are illustrated using the multimedia functionality of a new-generation cellular phone.