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1.
UML在网络安全监控系统建模中的应用 总被引:4,自引:0,他引:4
本文首先介绍了UML的特性,然后运用UML对网络安全监控系统中的数据采集系统进行了可视化的建模,建立了系统的需求模型和设计模型的各种视图,最后总结了用UML进行系统需求分析和设计的优越性. 相似文献
2.
Requirements engineering in health care: the example of chemotherapy planning in paediatric oncology
Health care is characterized by highly complex processes of patient care that require unusual amount of communication between different health care professionals of different institutions. Sub-optimal processes can significantly impact on the patient’s health, increase the consumption of services and resources and in severe cases can lead to the patient death. For these reasons, requirements engineering for the development of information technology in health care is a complex process as well: without constant and rigorous evaluation, the impact of new systems on the quality of care is unknown and it is possible that badly designed systems significantly harm patients. To overcome these limitations, we present and discuss an approach to requirements engineering that we applied for the development of applications for chemotherapy planning in paediatric oncology. Chemotherapy planning in paediatric oncology is complex and time-consuming and errors must be avoided by all means. In the multi-hospital/multi-trial-centre environment of paediatric oncology, it is especially difficult and time-consuming to analyse requirements. Our approach combines a grounded theory approach with evolutionary prototyping based on the constant development and refinement of a generic domain model, in this case a domain model for chemotherapy planning in paediatric oncology. The prototypes were introduced in medical centres and final results show that the developed generic domain model is adequate. 相似文献
3.
产品数据管理系统数据库设计 总被引:1,自引:0,他引:1
工程数据库EDB(Engineering Database),是工程设计及制造领域中相互有关的数据所组成的集合,本文在详细分析工程数据库的特点及其实现方式的基础上,结合SF-PDM数据库设计,深入讨论了使用UML进行数据库概念设计和逻辑设计的方法与步骤,总结介绍了SF-PDM数据库物理设计的思路与相关实现过程。 相似文献
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校园规模在不断地扩大,校园房屋管理规划部门对日益更新和迅速增加的建筑物房屋信息的管理与维护愈感困难,而现有的系统对空间数据与属性数据没有很好集成,更不利于图文信息的相互查询、检索和更新等。针对如上现实问题,应用MapInfo平台中的WebGIS技术,即MapXtreme技术,以及UML统一建模技术和SQL Server数据库等技术,成功地实现了数字校园房屋管理系统设计与开发,解决了房管部门面临的查询搜索更新校园建筑房屋信息时效率低下、管理与维护困难等实际问题。 相似文献
6.
规约变异测试从软件功能的角度,对规约进行分析,从而揭示规约中存在的问题。本文提出一种基于UML状态图的变异测试方法,针对每种变异算子,分析其是否会引入冲突,进而有效避免不合理的变异操作;分析了每种变异算子产生等价变异体的条件,能够在生成变异体的同时检测并移除等价变异体,进而减少其对测试过程的影响;给出了杀掉每种变异体所需满足的条件,可在此基础上产生杀掉特定变异体所需的测试用例,从而提高测试用例集的质量。在此基础上,根据变异算子的实际功能,整合了功能相同的算子,减少了变异算子的数量,从而进一步降低了变异测试的开销。实验结果表明,本方法能够较好地提高测试用例的质量,进而提升测试的效率。 相似文献
7.
基于MDA方法,使用UML profile建立企业应用模型,并应用模型转换工具实现代码自动生成,通过修改PSM模型自动实现代码的修改。详细探讨了PS_.NET UML profile的构成和转换过程,通过应用实例,证明该转换方法可以很好地应用于企业应用系统开发,提高开发效率,减少开发代价和维护。 相似文献
8.
开放式计算机数控系统的构建 总被引:3,自引:0,他引:3
文章首先指出了研究多轴数控加工技术的重要现实意义和深远意义.对CNC的开放性、开放标准、系统建模、实时性进行了分析研究,在此基础上创新性地提出了一种基于WinCE和DSP的开放式CNC的构建方案. 相似文献
9.
《Information and Software Technology》2014,56(2):220-237
BackgroundSource code size in terms of SLOC (source lines of code) is the input of many parametric software effort estimation models. However, it is unavailable at the early phase of software development.ObjectiveWe investigate the accuracy of early SLOC estimation approaches for an object-oriented system using the information collected from its UML class diagram available at the early software development phase.MethodWe use different modeling techniques to build the prediction models for investigating the accuracy of six types of metrics to estimate SLOC. The used techniques include linear models, non-linear models, rule/tree-based models, and instance-based models. The investigated metrics are class diagram metrics, predictive object points, object-oriented project size metric, fast&&serious class points, objective class points, and object-oriented function points.ResultsBased on 100 open-source Java systems, we find that the prediction model built using object-oriented project size metric and ordinary least square regression with a logarithmic transformation achieves the highest accuracy (mean MMRE = 0.19 and mean Pred(25) = 0.74).ConclusionWe should use object-oriented project size metric and ordinary least square regression with a logarithmic transformation to build a simple, accurate, and comprehensible SLOC estimation model. 相似文献
10.
Alexander Knapp Markus Roggenbach Bernd-Holger Schlingloff 《International Journal of Software and Informatics》2015,9(2):153-175
We address the problem of how to select test cases for products in a controlled model-based software product line development process. CVL, the common variability language, gives a framework for materialisation of product models from a given base model, variability model and resolution model. From such product models, software products can be derived. In practise, test case development for the product line often is independent from the product development. Therefore, the problem arises which test cases can be applied to which products. In particular, the question is whether a test case for one speci c product can be also used for a "similar" product. In this paper, we show how the
expected outcome of a test case to a product in a model-based software product line development can be determined. That is, we give a procedure for assigning the outcome of a given test case on an arbitrary member of a software product line. We recall the relevant de nitions for software product line engineering, describe our approach, and demonstrate it with the example of a product line of super-automatic espresso machines. 相似文献