为实现互联网上异种异构的复杂信息资源有序化组织和互操作性服务与共享的目标,文章研究了语义服务的元计算问题,提出了本体元建模理论和方法.首先定义了本体UML承诺、提倡本体UML表达,给出了本体的元机制;论述了元建模中的“元”概念,...为实现互联网上异种异构的复杂信息资源有序化组织和互操作性服务与共享的目标,文章研究了语义服务的元计算问题,提出了本体元建模理论和方法.首先定义了本体UML承诺、提倡本体UML表达,给出了本体的元机制;论述了元建模中的“元”概念,给出了元层次停止准则、模型转换机制;然后提出了本体建模和 MOF元模型设施相融合的体系结构,给出了以用户为中心的复杂信息资源服务应用模式 SCDI,为本体元建模方法的体系化提供了基础.还介绍了作者在国际 ISO SC32标准MMFI for Ontology Registry研究中的应用成果.最后给出了 HL7领域本体与元模型设计的应用.本体元建模为语义服务计算的实现,提供了一条可行的路径.展开更多
Rational planning of spares configuration project is an effective approach to improve equipment availability as well as reduce life cycle cost （LCC）. With an analysis of various impacts on support system, the spares...Rational planning of spares configuration project is an effective approach to improve equipment availability as well as reduce life cycle cost （LCC）. With an analysis of various impacts on support system, the spares demand rate forecast model is constructed. According to systemic analysis method, spares support effectiveness evaluation indicators system is built, and then, initial spares configuration and optimization method is researched. To the issue of discarding and con-sumption for incomplete repairable items, its expected backorders function is approximated by Laplace demand distribution. Combining the （s-1, s） and （R, Q） inventory policy, the spares resup-ply model is established under the batch ordering policy based on inventory state, and the optimi-zation analysis flow for spares configuration is proposed. Through application on shipborne equipment spares configuration, the given scenarios are analyzed under two constraint targets：one is the support effectiveness, and the other is the spares cost. Analysis reveals that the result is consistent with practical regulation;therefore, the model＇s correctness, method＇s validity as well as optimization project＇s rationality are proved to a certain extent.展开更多
文摘为实现互联网上异种异构的复杂信息资源有序化组织和互操作性服务与共享的目标,文章研究了语义服务的元计算问题,提出了本体元建模理论和方法.首先定义了本体UML承诺、提倡本体UML表达,给出了本体的元机制;论述了元建模中的“元”概念,给出了元层次停止准则、模型转换机制;然后提出了本体建模和 MOF元模型设施相融合的体系结构,给出了以用户为中心的复杂信息资源服务应用模式 SCDI,为本体元建模方法的体系化提供了基础.还介绍了作者在国际 ISO SC32标准MMFI for Ontology Registry研究中的应用成果.最后给出了 HL7领域本体与元模型设计的应用.本体元建模为语义服务计算的实现,提供了一条可行的路径.
基金co-supported by the General Armament Department Pre-research Foundation of China (Nos. 51304010206, 51327 020105)
文摘Rational planning of spares configuration project is an effective approach to improve equipment availability as well as reduce life cycle cost （LCC）. With an analysis of various impacts on support system, the spares demand rate forecast model is constructed. According to systemic analysis method, spares support effectiveness evaluation indicators system is built, and then, initial spares configuration and optimization method is researched. To the issue of discarding and con-sumption for incomplete repairable items, its expected backorders function is approximated by Laplace demand distribution. Combining the （s-1, s） and （R, Q） inventory policy, the spares resup-ply model is established under the batch ordering policy based on inventory state, and the optimi-zation analysis flow for spares configuration is proposed. Through application on shipborne equipment spares configuration, the given scenarios are analyzed under two constraint targets：one is the support effectiveness, and the other is the spares cost. Analysis reveals that the result is consistent with practical regulation;therefore, the model＇s correctness, method＇s validity as well as optimization project＇s rationality are proved to a certain extent.
