应用ObjectARX工具进行二次开发的AutoCAD对话框设计

ObjectARX2000为AutoCAD最重要的开发工具。该文介绍了在Visual C＋＋6．0集成开发环境中,应用ObjectARX工具,进行二次开发设计AutoCAD2000的两种格式的对话框,一种是AutoCAD系统本身提供的可编程对话框技术PDB格式,另一种是使用Wmdows机制的对话框设计技术。探讨了其设计方法步骤及程序实现的过程。     

铁塔三维放样过程中的一种自动装配方法

为了提高放样精度和放样效率,实现铁塔的虚拟预装配,提出了适用于铁塔三维放样的面贴合-孔定位自动装配方法.针对实际工程,利用AutoCAD的二次开发包ObjectARX,在Visual C＋＋集成开发环境下编写了相应程序.     

基于MFC的ObjectARX应用程序开发

从ObjectARX和MFC的应用特点出发,介绍了基于动态链接MFC库开发ARX应用程序的基本原理.通过实例,论述了MFC与ObjectARX相结合进行AutoCAD二次开发的具体方法,说明了MFC与ObjectARX相结合是深入开发AutoCAD的有效途径.     

基于COM与ARX的曲线光顺性研究

在AutoCAD2000开发平台上,对VC＋＋6．0的MFC为编程语言,采用基于COM的ActiveX automation技术,结合ObjectARX开发环境的ARX技术,建立工程应用的基本框架,对AutoCAD图形数据库的管理及外部数据库的操作,文章给出了详细的研究方案,采用整体光顺方法,以应变能最小,曲率变化均匀为准则,以控制点为未知量,实现曲线的光顺,给出光顺算法的数学模型。     

基于ObjectARX技术的全数字地籍测量系统的设计与开发

AutoCAD是CAD工业的旗舰产品,具有强大的图形编辑功能和开放性。本文主要介绍利用AutoCAD2005提供的二次开发工具：ObjectARX2005,采用Visual C＋＋．NET2002开发的全数字地籍测量软件。作者根据实际工程的需求,采用比较先进的开发工具及技术,研制成功了全数字地籍测量软件,为工程顺利完工提供了保障。     

用ObjectARX进行基于AutoCAD平台的二次开发

介绍新一代AutoCAD二次开发工具ObjectARX的工作机制和开发原理,并围绕一个ObjectARX的简单例子,说明在V C 5.0环境下ObjectARX应用程序的开发方法。     

基于MFC的ObjectARX应用程序开发

从ObjectARX和MFC的应用特点出发，介绍了基于动态链接MFC库开发ARX应用程序的基本原理。通过实例，论述了MFC与ObjectARX相结合进行AutoCAD二次开发的具体方法，说明了MFC与ObjectARX相结合是深入开发AutoCAD的有效途径。     

基于ObjectARX的AutoCAD二次开发及应用实例

分析了ObjectARX应用程序编写的基本过程和编写要点,然后以一个六角螺母的开发实例说明ObjectARX开发技术的实际应用.进一步验证了利用ObjectARX对AutoCAD进行二次开发高效、实用、独立性强、可参数化的优点.     

基于MFC的AutoCAD对话框设计技术

在使用AutoCAD的过程中，用户既可以通过命令提示行与AutoCAD进行交互，也可以通过对话框实现与AutoCAD的信息交流。随着AutoCAD逐渐定位于单一的Windows操作系统，以及图形用户界面技术的迅速发展并广泛应用于程序设计中，在AutoCAD中开发采用对话框技术的应用程序将更加符合程序设计的发展趋势。通过对话框，用户将获得更多的信息，同时，用户对程序的整体结构也会有一个更加清晰的印象。Autodesk公司提供的用于Auto－CAD２０００二次开发的ObjectARX开发工具，以VisualC＋＋６．０为开发环境，并对原VC＋＋基础类库进行了…     

基于ObjectARX的专用件参数化设计研究*

在分析产品专用件设计特点的基础上,提出专用件参数化设计的思想。分析ObjectARX开发工具的特点及其原理,并论述AutoCAD软件的二次开发过程。建立AutoCAD开发平台上应用ObjectARX进行专用件参数化设计的系统原型,并结合摩托车刹车轮毂论述了系统开发的过程。     

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