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1.
软件重用是软件界追求的目标,人们正努力实现基于框架、体系结构和需求的重用,但具体实现技术还不够成熟。框架是可重用的特定领域应用软件的半成品,在框架上定制可以建立具体的应用系统。一个好的框架可大大节省开发时间,降低开发成本。简要介绍了软件重用和框架,提出了一个用于信息系统领域的框架设计,并给出了该框架的体系结构和开发模型。  相似文献   

2.
基于模糊重用库的容错软件开发   总被引:1,自引:0,他引:1  
容错设计是改进软件可靠性的有效途径,然而由于设计多样性的实现很困难且开销大,导致该项技术目前仅应用于一些安全关键系统之中,为此,提出了一种将重用技术引入到容错软件开发过程中的应用框架,框架以模糊重用库为核心,增强的可靠性开发模型为基础,参数化可靠性指标为相异性设计的依据,简化了容错软件的开发过程,在方法和实践上改进了软件系统的可靠性,介绍了重用库结构,增强的可靠性开发方法,基于重用的相异性设计及其容错软件开发的支持。  相似文献   

3.
实施一个面向对象框架的方法   总被引:4,自引:2,他引:4  
周警伟  罗晓沛 《计算机仿真》2002,19(3):《计算机仿真》-2002年19卷3期-107-109.页-《计算机仿真》-2002年19卷3期-107-109.页
软件重用是在软件开发中避免重复劳动的解决方案,通过软件重用,可心提高软件开发的效率和质量。然而通常的一些重用技术如使用类库等仍然不能满足对重用的要求。一个面向对象的框架是针对某些特定领域的一些组件的整合,它从更高的层次和更大的规模来软件重用。它不仅重用了代码,而且重用了分析和设计,以求更好地提高效率和质量。该文主要从方法学的角度讨论如何实施一个面向对象的框架(Object-Oriented Framework,简称为OOF)的方法,同时介绍国内外在面向对象框架领域的一些研究和实践活动,并对如何加强相关领域的研究提出一些思路。  相似文献   

4.
软件重用的实现   总被引:6,自引:0,他引:6  
李也戈  张然 《计算机工程》1995,21(4):37-40,70
软件重用是指使用已有的软件成分构造新的软件系统的过程,本文分3个层次讨论了重用的方法,实现层,设计层,体系结构层的软件重用,同时指出,抽象是实现软件重用技术的基础,面向对象技术提供了多种支持软件重用的机制,通过建立一个可重用软件对象库,和构造用于管理可重用对象的软件开发环境,形成一种新的基于软件重用的软件开发范型,必将对软件开发产生深远的影响。  相似文献   

5.
软件重用的实现   总被引:3,自引:0,他引:3  
软件重用是指在构造新的软件系统的过程中利用已有的软件成分,本文从实现,设计和体系一个层次上讨论了几种软件重用方法。文中指出,抽象是软件重用技术的基础;面向对象的一些机制可以有效地支持软件成分的重;面向对象的程序设计技术是目前最成功的软件重用技术。建立丰富的软件可重用成分库和建造用于管理可重用成分的软件开发环境,就可以形成基于软件重用的新的软件开发范型。  相似文献   

6.
基于Flex/Struts+EJB技术的报表发布框架   总被引:4,自引:0,他引:4  
软件重用是提高软件开发效率的最有效方法之一.框架是近几年出现的软件重用的方法,它与构件、设计模式在软件重用的思想上一脉相承,提倡在设计和分析层面上的重用.Flex和Struts都是目前Web应用表现层MVC模式的流行实现框架.提出了一种金融系统的报表发布框架,集成Flex/Struts框架结构实现J2EE的用户表现层,同时集成EJB处理复杂事务逻辑,并以实际应用Report Center为例,验证了这几种技术集成的可行性和优点.  相似文献   

7.
设计模式思想在构建软件框架过程中应用的探讨   总被引:2,自引:0,他引:2  
袁绍欣  葛玮 《微机发展》2003,13(12):111-112,F003
许多文章在谈及设计模式和框架的关系时,多讨论它们之间的区别。而文中在介绍它们的区别之外,更多地是从设计模式提炼出的四个思想这个角度,以框架的含义为基础,来论述它们在软件设计上的联系,并针对这四个思想,逐一探讨了在软件项目开发过程中如何应用来构建软件框架。虽然这四个思想不是构件框架的全部思想,但无疑它们也是构件框架思想中不可或缺的。很好地应用这四个思想,将会提高框架的设计水平,增强框架的重用性。  相似文献   

8.
在软件重用技术中,除了功能部件的重用之外,还应当有软件体系结构和框架的重用。文本阐述了具有类Ada风格的软件标本重用的技术,提出将标本作为重用库中的可重用单元。阐明了标本重用的基本概念,途径及实现方法。是时,本文提出了重用库中的单元组成标准的建议。  相似文献   

9.
容错软件开发框架RSDF   总被引:2,自引:0,他引:2       下载免费PDF全文
本文提出了一种将重用技术引入到容错软件开发过程的思想框架。它以重用库为核心,将增强的净室模型作为可靠性软件开发的理论基础,在方法和实践上为容错软件的开发提供了强有力的支持。本文介绍了该框架中重用库模型的结构及其对容错软件开发方法的支持。  相似文献   

10.
软件重用技术和开发管理模式研究   总被引:2,自引:0,他引:2  
孟德斌  张雪松 《计算机工程》2002,28(3):83-84,116
研究和探讨了基于可重用构件库的软件开发模式,并提出了实施软件重用技术的组织结构框架和管理过程,为软件企业实施软件重用技术提供了参考。  相似文献   

11.
Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.  相似文献   

12.
European Community policy and the market   总被引:1,自引:0,他引:1  
Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.  相似文献   

13.
融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。  相似文献   

14.
Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.  相似文献   

15.
This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.  相似文献   

16.
Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008  相似文献   

17.
Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.  相似文献   

18.
This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)SM and Team Software Process (TSP){SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.  相似文献   

19.
基于复小波噪声方差显著修正的SAR图像去噪   总被引:4,自引:1,他引:3  
提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。  相似文献   

20.
蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。  相似文献   

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