为进行有效、规范的体系结构构建,现有体系结构大多采用美国国防部体系结构框架(Department of Defense architecture framework,DoDAF)作为指导,针对采用该框架构建的体系结构的数据完备性验证问题,提出了一种基于国防部体系结构框架...为进行有效、规范的体系结构构建,现有体系结构大多采用美国国防部体系结构框架(Department of Defense architecture framework,DoDAF)作为指导,针对采用该框架构建的体系结构的数据完备性验证问题,提出了一种基于国防部体系结构框架元模型(DoDAF meta-model,DM2)的验证方法。该方法利用DM2中数据实体之间的关系,直接从DM2中提取数据的完备性规则,进而构建完备性验证矩阵,并通过验证矩阵判断体系结构数据的完备性。最后,通过一个案例进行完备性验证步骤说明和可行性分析,验证结果说明了该方法的有效性。展开更多
体系结构是系统的系统(system of systems,SoS)构成的基础,是系统可靠运行和演进的依据。传统的SoS体系结构设计方法包括面向过程的结构化设计方法和面向对象方法等。它们均缺乏对SoS中各利益相关者的目的、意图和行为等的描述与表达。...体系结构是系统的系统(system of systems,SoS)构成的基础,是系统可靠运行和演进的依据。传统的SoS体系结构设计方法包括面向过程的结构化设计方法和面向对象方法等。它们均缺乏对SoS中各利益相关者的目的、意图和行为等的描述与表达。建立了用户需求符号(user requirements notation,URN)这一目标建模语言与美国国防部体系结构框架元模型间的对应关系。基于元模型,提出了SoS目标建模的过程与思路,并以搜索救援为例阐明了所提出的过程与思路。展开更多
Thermodynamic models of calculating mass action concentrations for structural units or ion couples in RbCl-H2O binary and RbCl-RbNO3-H2O ternary strong electrolyte aqueous solutions were developed based on the ion and...Thermodynamic models of calculating mass action concentrations for structural units or ion couples in RbCl-H2O binary and RbCl-RbNO3-H2O ternary strong electrolyte aqueous solutions were developed based on the ion and molecule coexistence theory at 298.15 K.A transformation coefficient is needed to compare the calculated mass action concentration and the reported activity because they are obtained at different standard states and concentration units.The results show that the transformation coefficients between the calculated mass action concentrations and the reported activities of the same structural units or ion couples in RbCl-H2O binary and RbCl-RbNO3-H2O ternary strong electrolyte aqueous solutions change in a very narrow range.The transformed mass action concentrations of structural units or ion couples in RbCl-H2O binary system are in good agreement with the reported activities. The transformed mass action concentrations of RbCl and RbNO3 in RbCl-RbNO3-H2O ternary solution are also in good agreement with the reported activities,aRbCl and 3RbNOa,with different total ionic strengths as 0.01,0.05,0.1,0.5,1.0,1.5,2.0,3.0 and 3.5 mol/kg,respectively.All those results mean the developed thermodynamic model of strong electrolyte aqueous solutions can reflect structural characteristics of RbCl-H2O binary and RbCl-RbNO3-H2O ternary strong electrolyte aqueous solutions and the mass action concentration also strictly follows the mass action law.展开更多
文摘体系结构是系统的系统(system of systems,SoS)构成的基础,是系统可靠运行和演进的依据。传统的SoS体系结构设计方法包括面向过程的结构化设计方法和面向对象方法等。它们均缺乏对SoS中各利益相关者的目的、意图和行为等的描述与表达。建立了用户需求符号(user requirements notation,URN)这一目标建模语言与美国国防部体系结构框架元模型间的对应关系。基于元模型,提出了SoS目标建模的过程与思路,并以搜索救援为例阐明了所提出的过程与思路。
基金Project supported by Publication Foundation of National Science and Technology Academic Books of China
文摘Thermodynamic models of calculating mass action concentrations for structural units or ion couples in RbCl-H2O binary and RbCl-RbNO3-H2O ternary strong electrolyte aqueous solutions were developed based on the ion and molecule coexistence theory at 298.15 K.A transformation coefficient is needed to compare the calculated mass action concentration and the reported activity because they are obtained at different standard states and concentration units.The results show that the transformation coefficients between the calculated mass action concentrations and the reported activities of the same structural units or ion couples in RbCl-H2O binary and RbCl-RbNO3-H2O ternary strong electrolyte aqueous solutions change in a very narrow range.The transformed mass action concentrations of structural units or ion couples in RbCl-H2O binary system are in good agreement with the reported activities. The transformed mass action concentrations of RbCl and RbNO3 in RbCl-RbNO3-H2O ternary solution are also in good agreement with the reported activities,aRbCl and 3RbNOa,with different total ionic strengths as 0.01,0.05,0.1,0.5,1.0,1.5,2.0,3.0 and 3.5 mol/kg,respectively.All those results mean the developed thermodynamic model of strong electrolyte aqueous solutions can reflect structural characteristics of RbCl-H2O binary and RbCl-RbNO3-H2O ternary strong electrolyte aqueous solutions and the mass action concentration also strictly follows the mass action law.
