基于XML的测试用例复用

在研究测试用例复用和XML语言的基础上,提出了一种基于XML的测试用例复用方法.采用XML描述可复用的测试用例,然后在此基础上对测试用例在库中进行查找并复用,从而使软件测试的效率得以大幅提高.     

一个编译器的测试用例自动生成系统

本文简便地介绍了一个对JOVIAL编译器进行系统测试的测试用例自动生成系统，在设计此生成系统时，作者吸收了Purdom算法的某些思想，并通过地系统中引入多级文法及设置功能模块等途径，较好地消除了Purdom算法无法解决生成过程中前后文相关的局限性，本系统还提供了一种自动修改输入文法的功能，以便能产生一些含有典型语法错误的测试用例，程序的生成按自顶向下、逐步细化的方式进行，且能保证系统的输出是短JOVIAL程序的最小集合，此外，由于在系统内部处理上采取了一些措施，使算法的执行速度得到了提高。     

An Improved Particle Swarm Optimization Algorithm Based on Ensemble Technique

An improved particle swarm optimization （PSO） algorithm based on ensemble technique is presented. The algorithm combines some previous best positions （pbest） of the particles to get an ensemble position （Epbest）, which is used to replace the global best position （gbest）. It is compared with the standard PSO algorithm invented by Kennedy and Eberhart and some improved＇PSO algorithms based on three different benchmark functions. The simulation results show that the improved PSO based on ensemble technique can get better solutions than the standard PSO and some other improved algorithms under all test cases.     

基于EM算法的软件可靠性研究*

结合边界值和等价类的方法对输入域的提取和输入点的选取作了详细分析.在考虑软件复杂性、缺陷后果严重性和信息不足等因素的基础上,提出了基于测试用例的软件可靠性模型,并结合EM算法和数理统计知识对该模型进行了相应的理论证明.实验表明,新模型具有较好的适用性.     

基于EDPN的类测试框架及测试用例生成技术的研究

针对基于状态的面向对象软件的类测试过程中存在的不可预测、不可达状态、状态组合“爆炸”和测试用例“爆炸”等问题,提出了基于EDPN模型的类测试、类的交互测试和类的层次测试框架,设计了相应的测试模型;提出了基于EDPN的有标记的唯一输入输出(UIO)测试用例的自动生成方法,生成状态转移路径序列,测试类的状态;提出了基于扩展的EDPN的状态组合的标记关联递推法,生成扩展的正交阵列表,测试类的交互;提出了基于扩展的EMDPN的协同路径(copaths)测试用例的生成方法,生成协同路径序列,测试类的层次。     

Analyses and Solutions of Specific Cases in Spatial Angles Calculation

1 Introduction “Spatial Angles Calculations” means that all the calculations of given and unknown parameters are related to calculating angles in 3D space. The functions and relevant parameters in 3D space are much more complicated than that in 2D space, i.e. on a plane. Professor Sun, based on his research conducting for more than a decade, presented a series of new algorithms to calculate angles in space which are valuable in both theory and applications[1]. The authors found that, in g…     

基于组合混沌遗传算法的最小测试用例集生成

最小测试用例集生成是软件测试的重要研究领域之一.将具有均匀分布特性的Chebyshev和Logistic混沌映射相结合的混沌序列引入遗传算法的选择、交叉和变异操作,并在遗传测试用例选择方法中添加混沌扰动,实现全局最优,以解决遗传算法用于测试用例集约简时局部搜索能力弱、易早熟收敛等问题.在随机生成的测试用例需求对应关系及Siemens测试套件等实例上进行了实验研究,并与现有的经典方法在测试用例集生成规模和算法执行时间上进行了比较,实验结果表明,在保持算法执行时间的基础上,在遗传测试用例方法中引入混沌映射有助于生成规模更小的测试用例集.     

An integrated domain analysis approach for teleoperated systems

Teleoperated systems for ship hull maintenance (TOS) are robotic systems for ship maintenance tasks, such as cleaning or painting a ship’s hull. The product line paradigm has recently been applied to TOS, and a TOS reference architecture has thus been designed. However, TOS requirements specifications have not been developed in any rigorous way with reuse in mind. We therefore believe that an opportunity exists to increase the abstraction level at which stakeholders can reason about this product line. This paper reports an experience in which this TOS domain was analyzed, including the lessons learned in the construction and use of the TOS domain model. The experience is based on the application of extensions of well-known domain analysis techniques, together with the use of quality attribute templates traced to a feature model to deal with non-functional issues. A qualitative research method (action research) was used to carry out the experience.     

建筑工程投标报价技巧的案例分析

报价是工程投标的核心.报价过高,会失去中标机会;报价过低,即使中标,也会给企业带来亏本风险.施工企业应从宏观角度对工程总报价进行控制,力求报价适中,提高中标率,获得较好的经济效益.本文结合工程投标报价案例,分析报价技巧,说明灵活应用报价技巧在投标中的重要性.     

广东省地质构造与岩土工程基本特征

广东省自震旦纪以来,地层发育完善,构造岩浆活动强烈,不同地层岩石和土的工程特征显著。在区域地质构造基础上,结合岩土工程实例,阐述珠江三角洲等主要地区和广州等主要城市的地质构造与岩土工程基本特征。指出结合区域地质构造条件、宏观与微观相结合以正确审视历史经验教训以及更经济合理地处理具体岩土工程问题,可产生巨大的社会、经济效益。