Pervasive computing has many new features, such as: the wideness related area, mobility of tasks and het-erogeneity of devices. How to support user's tasks in the pervasive computing environment is a challenge for...Pervasive computing has many new features, such as: the wideness related area, mobility of tasks and het-erogeneity of devices. How to support user's tasks in the pervasive computing environment is a challenge for engineer-s. The main idea in the article is that using middleware to mask the heterogeneity of devices and support user's tasksin a uniform platform. The goal of the middleware is to support mobility of task, to make the better use of resources,and to reduce user's intervene. The detail way is as follow: first, decompose application into several components,then represent user's tasks into abstract tasks and encapsulate physical service into virtual service; at last, abstracttask is completed by cooperation of several virtual services. A virtual service is mapped into different physical servicein different environment. In different environment, the same task could be completed by composing different services.Furthermore, the framework of the middleware has some features, such as: hierarchy of architecture, extensibility offunctions.展开更多
针对舰船功效评价体系完备性、合理性不足以及与实战化需求匹配度不高等问题,建立了基于国防部体系结构框架(Department of Defense Architecture Framework,DoDAF)的舰船功效评价体系构建方法。定义舰船实战化需求的概念内涵,围绕舰船...针对舰船功效评价体系完备性、合理性不足以及与实战化需求匹配度不高等问题,建立了基于国防部体系结构框架(Department of Defense Architecture Framework,DoDAF)的舰船功效评价体系构建方法。定义舰船实战化需求的概念内涵,围绕舰船功效评价体系构建目的对DoDAF进行了适应性剪裁,建立基于DoDAF的舰船实战化需求建模分析方法;定义舰船功效评价指标体系框架,建立基于DoDAF的舰船功效评价指标提取方法。以航母舰载机调运作业为例验证了方法的可行性。该方法能够改善舰船功效评价体系的完备性和合理性,对于提高舰船设计方案对实战化需求的满足度具有重要意义。展开更多
文摘Pervasive computing has many new features, such as: the wideness related area, mobility of tasks and het-erogeneity of devices. How to support user's tasks in the pervasive computing environment is a challenge for engineer-s. The main idea in the article is that using middleware to mask the heterogeneity of devices and support user's tasksin a uniform platform. The goal of the middleware is to support mobility of task, to make the better use of resources,and to reduce user's intervene. The detail way is as follow: first, decompose application into several components,then represent user's tasks into abstract tasks and encapsulate physical service into virtual service; at last, abstracttask is completed by cooperation of several virtual services. A virtual service is mapped into different physical servicein different environment. In different environment, the same task could be completed by composing different services.Furthermore, the framework of the middleware has some features, such as: hierarchy of architecture, extensibility offunctions.
文摘针对舰船功效评价体系完备性、合理性不足以及与实战化需求匹配度不高等问题,建立了基于国防部体系结构框架(Department of Defense Architecture Framework,DoDAF)的舰船功效评价体系构建方法。定义舰船实战化需求的概念内涵,围绕舰船功效评价体系构建目的对DoDAF进行了适应性剪裁,建立基于DoDAF的舰船实战化需求建模分析方法;定义舰船功效评价指标体系框架,建立基于DoDAF的舰船功效评价指标提取方法。以航母舰载机调运作业为例验证了方法的可行性。该方法能够改善舰船功效评价体系的完备性和合理性,对于提高舰船设计方案对实战化需求的满足度具有重要意义。
