为了解决MARTE(Modeling and Analysis of Real Time and Embedded systems)在建立嵌入式软件模型时不够精确的问题,结合Object-Z和PTA(Probabilistic Timed Automation)的优点,本文提出了一种集成的形式化建模方法——PTA-OZ.该方法不...为了解决MARTE(Modeling and Analysis of Real Time and Embedded systems)在建立嵌入式软件模型时不够精确的问题,结合Object-Z和PTA(Probabilistic Timed Automation)的优点,本文提出了一种集成的形式化建模方法——PTA-OZ.该方法不仅能够对嵌入式软件模型的静态语义和动态语义进行精确描述,而且通过模型转换规则,能够将MARTE模型转换为PTA-OZ模型.并对模型转换的语义一致性进行了验证,证明本文方法在转换过程能够保持结构语义和行为语义的一致性.最后通过实例模型描述从嵌入式软件建模到属性检验的过程.展开更多
In this paper,MnO2 nanorods were successfully synthesized firstly by solid-state redox reaction in the presence of a nonionic surfactant(PEG-400).The obtained samples were further characterized by XRD and TEM measurem...In this paper,MnO2 nanorods were successfully synthesized firstly by solid-state redox reaction in the presence of a nonionic surfactant(PEG-400).The obtained samples were further characterized by XRD and TEM measurements.The results showed that samples were α-MnO2,its average diameter were 8 nm and its average length were about 100 nm.The samples dispersed well and there was no obvious hard aggromeration.展开更多
文摘为了解决MARTE(Modeling and Analysis of Real Time and Embedded systems)在建立嵌入式软件模型时不够精确的问题,结合Object-Z和PTA(Probabilistic Timed Automation)的优点,本文提出了一种集成的形式化建模方法——PTA-OZ.该方法不仅能够对嵌入式软件模型的静态语义和动态语义进行精确描述,而且通过模型转换规则,能够将MARTE模型转换为PTA-OZ模型.并对模型转换的语义一致性进行了验证,证明本文方法在转换过程能够保持结构语义和行为语义的一致性.最后通过实例模型描述从嵌入式软件建模到属性检验的过程.
文摘In this paper,MnO2 nanorods were successfully synthesized firstly by solid-state redox reaction in the presence of a nonionic surfactant(PEG-400).The obtained samples were further characterized by XRD and TEM measurements.The results showed that samples were α-MnO2,its average diameter were 8 nm and its average length were about 100 nm.The samples dispersed well and there was no obvious hard aggromeration.
