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1、An object-oriented high-level design-based class cohesion metricClass cohesion is an important object-oriented software quality attribute. Assessing class cohesion during the object-oriented design phase is one important way to obtain more comprehensible and maintainable software. In practice, asses
2、sing and controlling cohesion in large systems implies measuring it automatically. One issue with the few existing cohesion metrics targeted at the high-level design phase is that they are not based on realistic assumptions and do not fulfill expected mathematical properties.An experimental study on
3、 the effect of mobile phone conversation on drivers reaction time in braking responseThis paper presents an experimental study in which the effect of three factors (distance between cars, mobile call duration, and time of driving (day or night) on drivers reaction time in braking response was invest
4、igated. MethodsThe experiment was performed in a real driving environment in which 27 male adults between the ages of 22 and 24years participated. Three levels of the first two factors (i.e., distance between cars and call duration) and two levels of the last factor (i.e., time of driving) were sele
5、cted to conduct the experimental study. A full factorial design of experiment with 18 treatment combinations and three replicates of each combination were used. Fifty-four trial runs were performed in a random manner and for each run drivers reaction time in braking response was measured, which serv
6、ed the data for further analysis. Analysis of variance (ANOVA), interaction effect analysis, and various model adequacy tests were carried out using Design Expert software. ResultsThe results of the study indicated that the most important factor affecting the drivers reaction time in car braking res
7、ponse was the mobile call duration followed by the time of driving, with a high level of interaction between the two factors. It was also found that the distance between cars did not seem to have a significant effect on the reaction time in braking response. It is to be noted that these response tim
8、es are expected to be higher under normal driving conditions where awareness of experimental environment is not present. Impact on IndustryThe findings of this study would help mobile phone industries in improving safety of mobile phone users in driving environment.Towards automation of control soft
9、ware: A review of challenges in mechatronic designDevelopment of mechatronic systems requires collaboration among experts from different design domains. In this paper the authors identify a set of challenges related to the design of mechatronic systems. The challenges are mostly related to integrati
10、on of design and analysis tools, and automation of current design practices. Addressing these challenges enables the adoption of a concurrent development approach in which the synergetic effects that characterize mechatronic systems are taken into account during design. The main argument is that in
11、order to deal with software development problems for complex mechatronic systems, there is a need to look at system design practices beyond concurrency, i.e., there is a need to consider the complex interdependencies among subsystems and the designers that develop them. A review on current methods a
12、nd tools is carried out to identify possible solutions proposed in previous works. The purpose is not to make an extensive review, but to show that integration, from different points of view, is a major issue and that increasing the level of abstraction in the description of systems can help to over
13、come the integration challenges. An increased level of abstraction also forms a basis for addressing other issues in mechatronic product development, which are presented in this work. With that in mind, concepts for an integration framework are proposed. The goal of the framework is to support a mul
14、ti-disciplinary design team to (almost) automatically generate and verify control software. Based on high-level architectural descriptions, the software generation and verification process can be supported by knowledge-based methods and tools. Other goals are to support communication among engineers
15、, improve reliability of designs, increase reuse of design knowledge, and reduce development time and development costs.自动化控制软件英语自学读物：机械电子学设计工程的挑战（文献与历史研究回顾）Handling communications in process algebraic architectural description languages: Modeling, verification, and implementationArchitectural descr
16、iption languages are a useful tool for modeling complex software systems at a high level of abstraction. If based on formal methods, they can also serve for enabling the early verification of various properties such as component coordination and for guiding the synthesis of code correct by construction. This is the case with process algebraic architectural description languages, which are process calculi enhanced with the main architectural concep
