To ensure the quality of Web applications, Web testing is one of the effective methods. The testing is a process of revealing errors that is used to give confidence that the implementation of a Web application meets i...To ensure the quality of Web applications, Web testing is one of the effective methods. The testing is a process of revealing errors that is used to give confidence that the implementation of a Web application meets its original specification. This work proposes a Web testing framework based on Stream X-Machines (SXMs), which provides a way to derive test cases for a Web application. It starts from constructing the SXM model, from which a test translator is employed to extract the test paths and then translates them into an XML-style test specification, which is the input of test engine. The test engine generates test cases and then executes them, and finally produces test report. This testing method is a significant contribution to informed research.展开更多
Nonlinear dynamic analysis of rotating machinery system has always been the hot spot of the rotational dynamics re-search. This article sets up a rotating machinery condition monitoring system to realize the measureme...Nonlinear dynamic analysis of rotating machinery system has always been the hot spot of the rotational dynamics re-search. This article sets up a rotating machinery condition monitoring system to realize the measurement of system dynamic charac-teristic parameters based on NI(National Instruments) virtual instruments technology. The measurement of vibration signal of rotating machinery system is achieved by using NI company general data acquisition module of NI Company. Meanwhile, by analyzing and processing the acquired data using LabVIEW 2012, the dynamic characteristics, such as .the speed of the rotating machinery system, the axis trajectory, spectrum parameters, are attained. The measurement results show that the rotating machinery condition monitor-ing system based on LabVIEW is easy to operate, easy to realize the function extension and maintenance, and that it can be used in the industrial engineering projects with rotation characteristics. LabVIEW as the development tools used by virtual instrument func-tion is very powerful data acquisition software products support is one of the features of it, so using LabVIEW programming and data acquisition is simple and convenient.展开更多
随着智能化时代的到来,以自动饮料售卖机、自动地铁售票机、ATM机等为代表的智能服务终端对人们的生活起到了越来越重要的作用,对智能服务终端进行全面有效的测试以防止其可能出现的各种错误,提升用户体验变得十分重要.针对目前软件版...随着智能化时代的到来,以自动饮料售卖机、自动地铁售票机、ATM机等为代表的智能服务终端对人们的生活起到了越来越重要的作用,对智能服务终端进行全面有效的测试以防止其可能出现的各种错误,提升用户体验变得十分重要.针对目前软件版本更新频繁、开发与测试难以对接、边开发边测试导致的测试工作量庞大且难以规范化等问题,根据智能服务终端状态及状态迁移特征明显的特点,提出一种在规格说明不充分、软件快速迭代需要不断回归测试情况下仍能被高效使用的测试方案——基于FSM(finite state machine)的探索性自适应测试.该方法首先通过探索性测试获得待测系统的状态及迁移信息,然后把它们建模成FSM,根据模型及已经执行过的测试用例,以状态及状态迁移覆盖为准则生成测试用例,在测试过程中不断地对测试模型及相应的测试用例进行自适应调整.基于该方法,通过集成开源软件Graphwalker,搭建了一个实验平台,选择了10种不同种类的常用智能服务终端,通过实验评估其有效性.实验结果表明,该方法生成的测试用例数量少,测试充分性程度高,可以高效地发现智能服务终端系统中存在的缺陷和问题.展开更多
文摘To ensure the quality of Web applications, Web testing is one of the effective methods. The testing is a process of revealing errors that is used to give confidence that the implementation of a Web application meets its original specification. This work proposes a Web testing framework based on Stream X-Machines (SXMs), which provides a way to derive test cases for a Web application. It starts from constructing the SXM model, from which a test translator is employed to extract the test paths and then translates them into an XML-style test specification, which is the input of test engine. The test engine generates test cases and then executes them, and finally produces test report. This testing method is a significant contribution to informed research.
文摘Nonlinear dynamic analysis of rotating machinery system has always been the hot spot of the rotational dynamics re-search. This article sets up a rotating machinery condition monitoring system to realize the measurement of system dynamic charac-teristic parameters based on NI(National Instruments) virtual instruments technology. The measurement of vibration signal of rotating machinery system is achieved by using NI company general data acquisition module of NI Company. Meanwhile, by analyzing and processing the acquired data using LabVIEW 2012, the dynamic characteristics, such as .the speed of the rotating machinery system, the axis trajectory, spectrum parameters, are attained. The measurement results show that the rotating machinery condition monitor-ing system based on LabVIEW is easy to operate, easy to realize the function extension and maintenance, and that it can be used in the industrial engineering projects with rotation characteristics. LabVIEW as the development tools used by virtual instrument func-tion is very powerful data acquisition software products support is one of the features of it, so using LabVIEW programming and data acquisition is simple and convenient.
文摘随着智能化时代的到来,以自动饮料售卖机、自动地铁售票机、ATM机等为代表的智能服务终端对人们的生活起到了越来越重要的作用,对智能服务终端进行全面有效的测试以防止其可能出现的各种错误,提升用户体验变得十分重要.针对目前软件版本更新频繁、开发与测试难以对接、边开发边测试导致的测试工作量庞大且难以规范化等问题,根据智能服务终端状态及状态迁移特征明显的特点,提出一种在规格说明不充分、软件快速迭代需要不断回归测试情况下仍能被高效使用的测试方案——基于FSM(finite state machine)的探索性自适应测试.该方法首先通过探索性测试获得待测系统的状态及迁移信息,然后把它们建模成FSM,根据模型及已经执行过的测试用例,以状态及状态迁移覆盖为准则生成测试用例,在测试过程中不断地对测试模型及相应的测试用例进行自适应调整.基于该方法,通过集成开源软件Graphwalker,搭建了一个实验平台,选择了10种不同种类的常用智能服务终端,通过实验评估其有效性.实验结果表明,该方法生成的测试用例数量少,测试充分性程度高,可以高效地发现智能服务终端系统中存在的缺陷和问题.
