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1.
陈章 《传感器世界》2001,7(2):33-35
本文了介绍传感器工作特点和生产传感器的工艺特点,介绍了激光焊接传感器的原理和特点,并和其他焊接工艺进行了比较,指出了传感器焊接方法的发展方向。  相似文献   

2.
首先介绍了TD-SCDMA的技术特点,在此基础上结合技术特点分析了TD-SCDMA的规划特点、网络演进策略,对TD-SCDMA无线网络规划的关键问题进行了详细的论述和探讨,并论述了与WCDMA的不同。  相似文献   

3.
数据挖掘技术及其在工业生产中的应用   总被引:12,自引:1,他引:12  
数据挖掘是一种新兴的数据处理和分析技术,生产领域的应用,文章概述了数据挖掘的主要技术特点、术的应用现状,分析了工业生产的过程特点和数据特点,处理和挖掘方法,强调了合理利用专业知识的重要性。已在许多领域发挥出可观的作用。为了促进数据挖掘在工业主要任务和一般实现方法,介绍了工业生产领域数据挖掘技并针对这些特点探讨了工业生产数据挖掘较为独特的数据预  相似文献   

4.
分布式网络监控系统的设计   总被引:8,自引:0,他引:8  
在系统地分析了三峡大坝施工现场的生产特点和设备特点的基础上,设计了一种基于组态王组态软件的分布式网络监控系统,开发了其相应的实施监控软件包,实际运行表明,该套系统具有可靠性高,实时性能好及智能化程度高的特点。  相似文献   

5.
苏德刚 《微机发展》1995,5(4):11-13
本文对客户/服务器计算的特点和协同处理的特点进行了对比,指出了各自的优缺点,在此基础上,给出了适合客户/服务器计算或协同处理的几种环境,使信息系统管理者在确定他们企业的应用和硬件环境时,能选择一个更适合本身应用特点的技术。  相似文献   

6.
孙梅  詹武 《计算机工程》2007,33(10):117-119
针对Intranet的特点提出了一种基于业务的抗毁性分析方法,方法中综合考虑了Intranet中的拓扑结构特点、业务特点。并针对依托于其它网络的网络,提出了抗毁性分析的解决方法。  相似文献   

7.
本文介绍了原木横截面图像的特点,据此特点设计了原木横截面图像模式识别的新方法,用以实现对原木材积的自动检测。  相似文献   

8.
本文论述了BIST在可信性嵌入式软件测试中的应用。先描述了软件BIST的原理,提出了可信系统的概念和特点,并着重阐述了可信模板的特点和设计方法。然后结合嵌入式软件的特点,详细介绍了怎样利用可信模板对不同类型的嵌入式程序进行测试,以及此种方法带来的优越性。  相似文献   

9.
一个军事专家系统开发环境的设计和实现   总被引:2,自引:0,他引:2  
本文提出了一种以知识库,数据库,图形库,模型库的一致化管理为特点的军事专家系统开发环境的设计和实现方案,并对其功能结构特点,使用情况进行了描述。  相似文献   

10.
QNX驱动程序的编写   总被引:1,自引:0,他引:1  
简要介绍了QNX的特点,论述了QNX下资源管理器和设备驱动程序的关系,在此基础上,详细阐述了QNX驱动程序编写的特点以及一般步骤。  相似文献   

11.
Frameworks are reusable software composed of concrete and abstract classes that implement the functionality of a domain. Applications reuse frameworks to enhance quality and development efficiency. However, frameworks are hard to learn and reuse. Application developers must understand the complex class hierarchy of the framework to instantiate it properly. In this paper, we present an approach to build a Domain-Specific Modeling Language (DSML) of a framework and use it to facilitate framework reuse during application development. The DSML of a framework is built by identifying the features of this framework and the information required to instantiate them. Application generators transform models created with the DSML into application code, hiding framework complexities. In this paper, we illustrate the use of our approach in a framework for the domain of business resource transactions and a experiment that evaluated the efficiency obtained with our approach.  相似文献   

12.
The latest Internet markup languages support the representation of structured information and vector graphics. In this paper we describe how these languages can be used to publish software engineering diagrams on the Internet. We introduce BOX, a portable, distributed and interoperable approach to browsing UML models with off‐the‐shelf technology. Our approach to browsing UML models leverages XML and related specifications, such as the Document Object Model (DOM), the XML Metadata Interchange (XMI) and the Vector Markup Language (VML). BOX translates a UML model that is represented in XMI into VML. VML can be directly displayed in Internet browsers, such as Microsoft's Internet Explorer 5. BOX enables software engineers to access and review UML models without the need to purchase licenses of tools that produced the models. BOX has been successfully evaluated in two industrial case studies. The case studies used BOX to make extensive domain and enterprise object models available to a large number of stakeholders over corporate intranets and the Internet. We show how XML and the BOX architecture can be applied to other software engineering notations. We also argue that the approach taken in BOX can be applied to other domains that have already started to adopt XML and have a need for graphic representation of XML information. These include browsing gene sequences, chemical molecule structures and conceptual knowledge representations. Copyright © 2000 John Wiley & Sons, Ltd.  相似文献   

13.
机器人三维图形仿真的实现   总被引:9,自引:0,他引:9  
机器人三维图形仿真是机器人离线控制系统开发中的重要一环。与OpenGL程序设计、0pen Inventor程序设计相比较,运用Cortonss SDK能实现较为理想的效果。该文对此作了详细的分析比较,介绍了VRML在机器人建模中的应用,以Puma560机器人手臂为例,实现了机器人三维图形仿真。  相似文献   

14.
基于COOZ对UML的类结构的形式化   总被引:3,自引:0,他引:3  
为面向对象的模型建立坚实的形式化基础是近年形式化研究的热点。一旦提供了对面向对象模型概念的精确描述后,就可以对OO模型的行为和结构进行清晰的分析。统一模型语言(UML)是为建立统一的面向对象开发方法的有益偿试,它是在已有的三大OO方法学的基础上抽象出来的模型语言。文章结合作者正在进行的对Z语言的OO扩展COOZ,对UML的类层次结构进行精确的形式化描述。  相似文献   

15.
随着Internet的发展,以虚拟现实建模语言(Virtual Reality Modeling Language,简称VRML)为代表的基于WWW的虚拟现实建模技术正在日益受到广泛的重视。本文根据VRML的繁杂性,讨论了基于VRML进行三维仿真环境建模的主要实现方法,从而提高创建三维仿真空间和实体的效率。  相似文献   

16.
Behavioral interface specification languages, such as Java Modeling Language (JML), can be used to specify the behavior of program modules. We have developed a behavioral interface specification language Moxa, an extension of JML. Moxa provides a new modularization mechanism called assertion aspect that can capture the crosscutting properties among assertions. In this paper, we briefly explain the notion of assertion aspects and the design of Moxa, and then we show an example specification. By comparing the specification to its JML counterpart, we show that the use of assertion aspects clarifies the large, complex specification and greatly simplifies each assertion in the specification.  相似文献   

17.
基于UML的企业资源计划系统建模的研究   总被引:9,自引:0,他引:9  
统一建模语言(UML)是一种定义良好、易于表达、功能强大且普遍适应的图形化建模语言,已成为事实上的工业标准。它的使用范围不仅限于支持面向对象系统的分析与设计,还支持从需求分析开始的软件开发的全过程。文章通过UML的系统建模方法的研究,阐述了UML应用于流通行业ERP系统的建模过程和建模的关键技术。实践证明:该系统建模方法技术先进,可扩展性、可重用性和适应性强。  相似文献   

18.
Automated Prototyping of User Interfaces Based on UML Scenarios   总被引:1,自引:0,他引:1  
User interface (UI) prototyping and scenario engineering have become popular techniques. Yet, the transition from scenario to formal specifications and the generation of UI code is still ill-defined and essentially a manual task, and the two techniques lack integration in the overall requirements engineering process. In this paper, we suggest an approach for requirements engineering that generates a user interface prototype from scenarios and yields a formal specification of the application. Scenarios are acquired in the form of collaboration diagrams as defined by the Unified Modeling Language (UML), and are enriched with user interface (UI) information. These diagrams are automatically transformed into UML Statechart specifications of the UI objects involved. From the set of obtained specifications, a UI prototype is generated that is embedded in a UI builder environment for further refinement. Based on end user feedback, the collaboration diagrams and the UI prototype may be iteratively refined, and the result of the overall process is a specification consisting of the Statechart diagrams of all the objects involved, together with the generated and refined prototype of the UI. The algorithms underlying this process have been implemented and exercised on a number of examples. This research was mainly conducted at University of Montreal, where the first two authors were PhD students and the third author a full-time faculty member. Funding was provided in part by FCAR (Fonds pour la formation des chercheurs et l'aide à la recherche au Québec) and by the SPOOL project organized by CSER (Consortium Software Engineering Research) which is funded by Bell Canada, NSERC (Natural Sciences and Research Council of Canada), and NRC (National Research Council Canada).  相似文献   

19.
讨论了网络中语音通信的原理,归纳了设计的方法,给出了基于Delphi的程序设计过程。  相似文献   

20.
利用合理的方法构造数据库模型是建立良好数据库的重要手段。常用的数据库建模方法有:E-R(Entity-Relation,实体-联系)方法、UML(UnifiedModelingLanguage,统一建模语言)方法和ORM(Object-RoleModeling,对象角色建模)方法。本文结合一次性医疗器械制造企业ERP系统的特点,详细介绍了采用ORM方法建立设备管理子系统概念数据模型的过程。  相似文献   

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