VB打印技术研究

提出两种技术可提高打印开发的速度和质量.通过程序自动识别窗体上文本框、标签和图片框等控件,并按以上控件对应打印程序进行输出,实现打印的自动化;介绍一种打印预览实用技术,可实现复杂格式的输出.     

VB中高效的输入与显示控件Masked Edit

在进行MIS的程序设计过程中，输入数据的格式及其有效性奏主 下和输出数据的格式是实现系统功能的两个非常重要的部分。本文介绍VB中一个非常实用的格式输入输出控件。     

基于ActiveX和XML技术实现的B/S环境下报表打印

本文针对B/S系统中无法在客户端实现复杂报表打印的问题,利用Delphi开发了一种ActiveX报表的打印控件.该ActiveX控件采用XML文件作为中间数据交换格式,并对XML文件进行格式解析,得到从服务器中响应回客户端的数据信息和控制信息,最终在客户端的打印机上实现打印输出.     

用VB编写通用的报表预览和打印程序

VB(Visual Basic)的报表设计器(包括第三方报表控件Crystal REPORT)有许多不尽人意之处。通过调用VB中的Printer对象、PictureBox控件的属性、方法进行编程,可以在VB中实现既具有通用性又能高效率运行的报表预览和打印程序。本文主要介绍了这种编程     

调用API函数实现RTF文档的打印和预览

Rich Textbox控件是一个功能很强的字处理控件,内容存储为RTF格式,本文介绍了在VB中通过调用API函数实现RTF格式文档打印和预览的方法。     

一个基于程序变换的制表程序

本文介绍了一种报表打印程序生成系统的设计思想和实现方法。系统采用程序变换的思想,设计使用一种用来描述报表格式的报表描述语句对报表结构进行描述,由微机自动生成报表打印程序。     

基于.Net和XML模版的打印控件的设计与实现--分层与复用思想的应用

基于Web实现精确打印成了亟待解决的问题，本文介绍了基于Microsoft，net实现Web打印控件的基础知识,从这个控件的分层设计入手,分别从以前失败的实践和如何正确重组两个方面分析每一层的具体实现方法，解决了工程应用中复杂表格的套打和连续打印问题。     

一个实用的方格纸格式文稿打印程序

目前文稿的格式打印几乎成了电脑打字机的“专利”,微机上还不享有该软件产品,实在是令人遗憾。笔者曾使用过四通电脑打字机,并对其格式打印产生了兴趣,因此想到了编写一个程序在微机上也实现格式打印。(程序附后)。该程序的主要功能是对经EDLIN、WordStar     

基于ActiveX技术的打印控件

介绍了一种基于Activex技术的打印控件的设计和实现方法，并引用一个实例来说明此打印控件的应用方法，该打印控件的应用，具有较强的实用性和灵活性。     

基于VB的一种动态图表的实现方法

任何一个计算机管理信息系统都离不开统计图表功能,VB6.0中提供了报表打印控件Data Report,另外还有一些第三方打印控件CrystalReport和Active Report都可以安装在VB6.0上提供打印功能。Data Report控件制作出的报表格式不灵活,不便于移植。控件CrystalReport和Active Report需要另外购买再安装到VB6.0中才能使用,故本次在开发信息系统中实现了一种动态产生报表的方法,即在VB里建立一个W ord Application对象,通过W ORD文档进行报表打印。VB6.0中提供了统计图控件M SChart,对产生的所有费用经过统计用该控件显示出来,可以看出…     

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.