EDI技术在集装箱场站管理信息系统中的应用

本文在给出EDI系统的层次模型的基础上，介绍了CYMIS中EDI系统的实现、系统模型及各模块的功能实现。     

EDI技术在集装箱场站管理信息系统中的应用

本文在给出EDI系统的层次模型的基础上，介绍了CYMIS中EDI系统的实现、系统模型及各模块的功能实现。     

科研管理系统的研究与设计

采用在数据库基础上研究并设计了一个B／S模式的科研管理系统。给出了系统的设计思想和总体结构，并且详细叙述了系统的各项功能模块的设计和实现，其中包括项目管理模块、人员管理模块、经费管理模块、用户管理模块、系统设置模块和信息查询模块。     

Linux模块技术分析及应用

通过分析Linux内核中模块动态装载机制，总结了使用模块的优点和缺点，介绍了Linux模块装入、卸载的实现，并在此基础上给出了一个以模块方式存在于系统中的设备驱动程序例子。     

基于电话线传输的嵌入式JPEG图像编码系统设计

介绍了基于电话线传输的嵌入式JPEG图像编码系统的组成结构,在此基础上对系统的各个组成模块特别是实现数据压缩的DSP模块进行了详细的分析,并给出了不同模块间的接口设计电路.     

基于COM技术的串行通信动态链接库设计

为了实现PC与短信收发模块的串行通信，在分析了Q2358C无线模块与计算机串口通信实现的方法的基础上，采用基于VC平台的COM组件技术，设计了一个动态链接库（DLL）；应用程序可通过调用动态链接库接口与模块进行通信，实现短信收发功能；讨论了通信编程中几个关键技术，给出了程序设计框图和部分源程序，为应用系统的开发奠定了技术基础。     

基于Nios的数据采集系统网络接口设计

为构建网络化的数据采集系统，根据数据采集模块与处理控制模块通过以太网相连接的结构模型，设计了基于Nios软核系统的嵌入式以太网网络接口模块。给出了具体的硬件设计方案，特别对以太网接口控制芯片LAN91C111的设计进行了详细阐述；在软件的实现中介绍了Nios开发包的TCP／IP协议栈的应用和网络接口芯片的驱动编写，在通信协议的基础上给出软件流程图。该设计具有通用性好、可扩展性强以及方便易行等优点，为远程数据采集系统的网络化提供了很好的解决方案。     

基于扩展的XML实现知识与文档的转换

在研究XML及知识库系统的基础上,提出了一种新的基于扩展xml的知识-文档转换系统,并实现了核心的软件模块.针对网络和应用需求给出了KOML的定义.系统根据KOML实现文档与知识的相互转换,且引入知识的参数结构完成了知识的编译和解析.论文还在最后给出了实现的软件模块和界面.     

基于自由软件的Internet应用教学系统研究

根据Internet应用教学需要。构建统一的教学实践系统辅助教学，是提高教学质量的重要手段。文章基于B／S结构，分析了教学实践系统的三模块组成体系。即客户端系统、服务端系统和数据库系统，在此基础上较为详细的给出了自由软件集成教学实践平台的实现细节。     

基于WebService的高校应用集成

目前高校中都存在业务系统异构难于集成的问题.根据这个问题,提出了基于WebService的高校应用集成的解决方案.该方案主要是把高校中现存的业务系统通过重新改造成WebService,从而利用WebService良好的低耦合性和标准性,实现应用集成.在WebService的基础上,给出了高校应用集成的SOA架构;给出了该架构下每个模块的技术实现,其中遗留业务系统的改造是最困难的部分;最后在WSAD上实现了一个业务模块的改造.在技术上实现了基于WebService的高校应用集成,并成功实现了一个业务模块,从而证明了基于WebService的高校应用集成的可行性,并给出了下一步的改进方向.     

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