软件复用开发模式的意义及关键技术探析

软件复用开发模式对于提高软件工程开发效率以及降低软件工程开发成本而言具有着重要意义。本文以推动软件复用开发模式在软件工程开展中的应用为出发点,在对软件复用做出概述的基础上,对软件复用开发模式中的关键技术以及推广过程中面临的主要问题进行了研究与探讨。     

Delphi开发中的复用技巧

在软件开发的过程中,软件复用是提高软件开发效率和质量的一个重要手段。软件复用的方法和技巧很多,介绍一种在Delphi数据库应用开发中有效复用的方法和技巧,通过该方法能大大提高Delphi数据库应用的开发效率。     

基于构件的指控软件复用

当前军用指控软件开发效率仍然较低,软件设计和代码开发重复性开发仍然普遍,由此导致软件系统的可靠性得不到保证,开发周期也较长。软件复用是指控软件开发中避免重复开发的重要解决方案,通过软件复用明显可以提高软件开发的效率和可靠性,改善军用软件的维护性和保障性。结合军工科研院所软件开发中流行的构件技术,介绍了软件复用的基本概念和关键技术,就基于构件的指控软件复用技术在指挥与控制软件系统做出应用研究,这些对指控软件复用的工程普及做出了实践贡献。     

星载软件复用技术探讨

星载软件的开发效率是制约卫星研制能力的因素之一,研究星载软件复用技术就是为了提高星载软件的开发效率和软件的质量;文中对星载软件复用的现状进行了分析,指出了影响星载软件复用的技术因素,探讨了实施星载软件复用的方法,并以举例的方式重点阐述了如何以领域工程的方式对星载软件进行领域分析、构造可复用构件和建立软件复用库;最后,介绍了软件沿用这一特殊的星载软件复用形式,这些方法都已进人实践阶段,具有一定的应用前景.     

基于构件的指控软件复用

当前军用指控软件开发效率仍然较低,软件设计和代码开发重复性开发仍然普遍,由此导致软件系统的可靠性得不到保证,开发周期也较长.软件复用是指控软件开发中避免重复开发的重要解决方案,通过软件复用明显可以提高软件开发的效率和可靠性,改善军用软件的维护性和保障性.结合军工科研院所软件开发中流行的构件技术,介绍了软件复用的基本概念和关键技术,就基于构件的指控软件复用技术在指挥与控制软件系统做出应用研究,这些对指控软件复用的工程普及做出了实践贡献.     

软件复用技术的探讨

软件复用是指利用现有的软件成分(资源)来构造新的软件系统。通过软件复用,在应用系统开发中可以充分地利用已有的开发成果,消除了包括分析、设计、编码、测试等在内的许多重复劳动,从而提高了软件开发的效率,同时,通过复用高质量的已有开发成果,避免了重新开发可能引入的错误,从而提高了软件的质量。该文将对软件复用技术的基本概念及关键技术进行全面的介绍。     

VB环境下基于类的软件复用技术研究

为提高VB环境下软件开发的效率,研究了软件复用技术,提出了以代码组件为核心的软件复用工程化思想.结合具体应用,详细介绍了VB中类的创建、复用方法,以及基于类的ActiveXDLL代码组件复用技术,同时还对VB中常用的其它代码组件的复用方法进行了简单介绍.研究结果表明,合理利用相关的软件复用技术,可以缩短软件的开发周期,提高软件的开发质量.     

基于J2EE的软件支撑平台构件技术研究

为提高软件复用程度、系统开发效率和可维护性,提出了基于平台化、构件化的系统开发思想.应用结构化,模块化和面向对象方法,在J2EE支撑平台的基础上,研究了软件构件定义、属性、表现和模型,构件分类与管理技术.阐述了基于平台和构件的开发过程.在多个项目中应用表明,系统的开发效率被提高了20%左右,软件复用性显著提高,可维护性明显增强.     

基于构件的银行综合业务系统的研究和实现

软件复用通过设计构件来搭建新的系统,构件是软件复用的基础元素。通过软件复用可以大大减少软件开发中的重复劳动,提高开发效率和保证软件质量。本文主要是通过研究和探讨基于构件的银行综合业务系统开发的相关技术和方案,对基于构件技术的开发过程进行分析,并指出了在实现中遇到的技术问题和解决方法,从而为信息系统的设计与实现提出了参考模型和方案。     

基于复用的军用软件构件化与生产线技术探讨

软件复用是避免重复开发的重要解决方案,软件构件化与生产线技术可以明显提高软件开发效率及复用水平。论文介绍了软件复用、构件化、生产线的基本概念和关键技术,并就其在军用软件的应用方法进行研究。     

Only connect: teaching, technology and telesis

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.     

European Community policy and the market

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.     

一种自适应子融合集成多分类器方法

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。     

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.     

Avoiding semantic and temporal gaps in developing software intensive systems

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.     

Designing economic np control charts: A programmed simulation approach

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.     

The development of robot art

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     

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.     

Explanation and prediction: an architecture for default and abductive reasoning

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.     

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.