基于LabVIEW的PC与TPG252A串口通信研究

分析了PC与TPG252A间串行通信的通信协议,实现了PC与TPG252A的RS232串口全双工异步串行通信,编写了实现串口通信的LabVIEW程序,解决了通信中数据以ASCII码形式传输的不便,程序简单,实用性强。     

VC?NET下实现dsPIC单片机与PC机的通信

分析了在VC.NET环境下实现PC与ds PIC单片机进行串行数据交换的方法,并通过16进制数据收发的串行通信实例,从硬件设计、dsPIC单片机通讯程序编写、VC.NET环境下的通讯程序编写等方面进行了论述。     

小型水电站数据采集系统中PLC与PC的通信方法

阐述了一种在小型水电站水力监测数据采集系统中PLC与PC串行通信的实现方法,给出了PLC与PC的硬件接口方法,阐明了实现PLC与PC之间正常交换数据的通信原理,编写了基于Windows和VB环境下的通信程序,在江西洪门水电厂计算机监控系统中运行表明通信方法简单、稳定且可靠性高.     

PC机与单片机串行通信在汽油机电控系统中的应用

串行通信是发动机电控试验台实时监控软件的主要功能之一。本文重点介绍了32位VC 通信程序的编写，实现了PC机与16位单片机的串行通信，为发动机在线优化控制参数提供了一种途径。程序以类库的形式出现，提高了移植性和扩展性。     

PC机串口与多个单片机红外无线通信的实现

本文介绍了用红外线实现上位PC机和多个单片机间的无线串行通信的新方法,给出了硬件线路图、通信协议和程序流程图及用VB6.0和MCS51汇编语言编写的部分串行通信程序。     

基于MSComm控件的PC机与单片机串行通信的实现

本文介绍了如何利用通信控件MSComm设计PC机与单片机之间的串行通信。硬件部分采用MAX232AESE芯片解决了PC机与单片机之间通信连接电平不一致的问题;软件部分给出了VC＋＋6.0编写的PC机通信程序和C语言编写的单片机通信程序。     

Win32环境下微机与GPS模块的串行通信编程

文中结合实际应用对GPS全球定位系统的定位导航信息的接收和参数数据的提取进行了讨论,在Win32环境下(Windows9x/NT/2000)基于Borland C++ Builder开发平台实现微计算机与GPS接收模块的串行通信编程.详细介绍了GPS数据通信的基本概念和数据格式,以及在Windows消息机制下的多线程异步串行通信机制,采用VCL组件技术实现Win32环境下与GPS数据通信程序的快速开发.应用该方法编写的程序简单方便,可以将卫星定位导航信息从GPS接收机完整传送到微计算机中,数据通信功能稳定可靠.     

基于Visual C++6.0的PC机与DSPs的串行通信

在Visual C++6.0环境下,利用Windows 98操作系统的多线程技术和Win 32应用程序接口(API)开发串行通信程序.给出以定点DSP芯片ADSP-2181为核心的数字语音记录仪和PC机通信程序实例,编写并调试通过了所有程序.     

浅析Win32串行通信程序

在实际工程设计过程中,经常会遇到编写串行通讯程序的问题。由于编写Ｗｉｎｄｏｗｓ串行通信程序要用到大量的ＷｉｎｄｏｗｓＡＰＩ数据,再加上Ｗｉｎ３２串行通信与Ｗｉｎ１６串行通信有很大区别,所以,编写串行通讯程序的难度就比较大。本文详细介绍编写Ｗｉｎ３２串行通信程序的具体步骤。     

TMS320F28335DSP与PC机的串行通信设计

介绍了TMS320F28335DSP与PC机通过RS485接口进行的串行通信设计,详细阐述了上位机、下位机的软件设计与RS485的硬件连接。DSP通信程序采用状态位查询方式进行数据传输,可以方便地把程序融合到其他DSP程序中,保证DSP与PC机的串行通信不影响其他功能的实现。     

Call for Papers The 6^th International Conference on Grid and Cooperative Computing

Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.     

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.     

法律信息库系统

本文分析了法律数据库的结构和特点，介绍了采用面向对象设计方法和超文本数据库技术开发和实现法律信息库系统将作为重要网络资源之一为不同用户进行法律咨询服务。     

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.     

International Journal of Automation and Computing Table of Contents

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Information for authors

正SCIENCE CHINA Information Sciences(Sci China Inf Sci),cosponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China,and published by Science China Press,is committed to publishing highquality,original results of both basic and applied research in all areas of information sciences,including computer science and technology;systems science,control science and engineering(published in Issues with odd numbers);information and communication engineering;electronic science and technology(published in Issues with even numbers).Sci China Inf Sci is published monthly in both print and electronic forms.It is indexed by Academic OneFile,Astrophysics Data System(ADS),CSA,Cabells,Current Contents/Engineering,Computing and Technology,DBLP,Digital Mathematics Registry,Earthquake Engineering Abstracts,Engineering Index,Engineered Materials Abstracts,Gale,Google,INSPEC,Journal Citation Reports/Science Edition,Mathematical Reviews,OCLC,ProQuest,SCOPUS,Science Citation Index Expanded,Summon by Serial Solutions,VINITI,Zentralblatt MATH.     

Erratum to: Fast global kernel fuzzy c-means clustering algorithm for consonant/vowel segmentation of speech signal

正Erratum to:J Zhejiang Univ-Sci C(ComputElectron)2014 15(7):551-563doi:10.1631/jzus.C1300320The original version of this article unfortunately contained mistakes.Algorithm 6 should be as follows:Algorithm 6 FGKFCM-F clustering Input:(1)X={x_1,x_2,…,x_N},,x_iR~d,i=1,2,…,N,the dataset;(2)C,1C≤N,the number of clusters;(3)ε0,the stopping criterion;     

Journal of Zhejiang University-SCIENCE C (Computers & Electronics) Total contents

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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.