Production sharing contracts have been used in the development of China’s offshore petroleum resources since 1982, but the mechanism in which the fiscal terms impact project economics is complicated and not well unde...Production sharing contracts have been used in the development of China’s offshore petroleum resources since 1982, but the mechanism in which the fiscal terms impact project economics is complicated and not well understood. The purpose of this paper is to model China’s offshore production sharing contracts using a probabilistic approach. Cash flows and economic indicators are used for a typical offshore oilfield development, and meta-models are constructed to analyze the basic features of the fiscal system. Applications of the models in contract negotiation are discussed.展开更多
Modern secretaries need to master a lot of oldand new skills including some required skills and some modernabilities.And secretaries in modern offices also have to mastersome special skills to be supportive to their b...Modern secretaries need to master a lot of oldand new skills including some required skills and some modernabilities.And secretaries in modern offices also have to mastersome special skills to be supportive to their bosses.展开更多
现有分配机制难以对临空高超声速飞行器进行高效、稳定、实时的探测跟踪任务分配,基于此问题构建了兼有集中式全局统筹和分布式动态反馈特点的混合式任务分配体系框架;建立了基于效能、时间、任务完成率和负载率的多传感器任务分配模型...现有分配机制难以对临空高超声速飞行器进行高效、稳定、实时的探测跟踪任务分配,基于此问题构建了兼有集中式全局统筹和分布式动态反馈特点的混合式任务分配体系框架;建立了基于效能、时间、任务完成率和负载率的多传感器任务分配模型;借鉴合同网的协商签约机制,提出了具有双重定向调整机制的合同量子遗传算法(Contract Net Quantum Genetic Algorithm,CNQGA)。通过仿真验证了模型的合理性、算法的高效稳定性。对未来临空高超声速飞行器探测跟踪体系的构建具有一定的技术指导作用。展开更多
文摘Production sharing contracts have been used in the development of China’s offshore petroleum resources since 1982, but the mechanism in which the fiscal terms impact project economics is complicated and not well understood. The purpose of this paper is to model China’s offshore production sharing contracts using a probabilistic approach. Cash flows and economic indicators are used for a typical offshore oilfield development, and meta-models are constructed to analyze the basic features of the fiscal system. Applications of the models in contract negotiation are discussed.
文摘Modern secretaries need to master a lot of oldand new skills including some required skills and some modernabilities.And secretaries in modern offices also have to mastersome special skills to be supportive to their bosses.
文摘现有分配机制难以对临空高超声速飞行器进行高效、稳定、实时的探测跟踪任务分配,基于此问题构建了兼有集中式全局统筹和分布式动态反馈特点的混合式任务分配体系框架;建立了基于效能、时间、任务完成率和负载率的多传感器任务分配模型;借鉴合同网的协商签约机制,提出了具有双重定向调整机制的合同量子遗传算法(Contract Net Quantum Genetic Algorithm,CNQGA)。通过仿真验证了模型的合理性、算法的高效稳定性。对未来临空高超声速飞行器探测跟踪体系的构建具有一定的技术指导作用。