To accurately describe the resource values that agents possess in the complex supply chain system which is a result of the interaction among the agents and to make correct decisions regarding quantity, time and place ...To accurately describe the resource values that agents possess in the complex supply chain system which is a result of the interaction among the agents and to make correct decisions regarding quantity, time and place of the resources, the characteristics of the resource values in the supply chain are analyzed. ＂Chromosome＂ is used to express a resource value in the supply chain, and eight random numbers are used to integrate the resources. The if-then rules and correlation chance constrained programming in the resource supply-distribution model are set up and they are used in a three-tiered-echo model which can describe the kinds of interactive behavior of the agents in the supply chain system. Simulation is done in the platform of Swarm with a genetic algorithm. The results show that the resources in the supply chain complex adaptive system are an organic whole that cannot be separated. The three-tiered-echo model can accurately describe the interaction of resource flows of agents in the supply chain system. The system can attain optimization by utilizing the resources in the supply chain if the agents in the system cooperate, compete and distribute resources according to this model.展开更多
The power system is a classical example of complex systems. In this paper it is shown that the power industry in China is facing a tremendous challenge. The complexity in power systems is investigated as follows. Firs...The power system is a classical example of complex systems. In this paper it is shown that the power industry in China is facing a tremendous challenge. The complexity in power systems is investigated as follows. First, the cascade failure in power systems is analyzed, and compared with sand-pile model. Next, we show that the agent-based modelling is a proper way for power network. Mathematically, the geometric dynamics and differential inclusion are useful tools for the stability analysis of large scale power systems. As for power market, the game theory and generalized control system model are proposed. For a complex power system, an evolutive model may be more accurate in description and analysis. Finally, certain newly developed numerical methods in the power system computation are introduced. Overall, we are convinced that the theorem of complexity, combined with modern control theory, may be the right way to answer the challenges faced by the power industry in China.展开更多
基金The National Natural Science Foundation of China(No70471087)
文摘To accurately describe the resource values that agents possess in the complex supply chain system which is a result of the interaction among the agents and to make correct decisions regarding quantity, time and place of the resources, the characteristics of the resource values in the supply chain are analyzed. ＂Chromosome＂ is used to express a resource value in the supply chain, and eight random numbers are used to integrate the resources. The if-then rules and correlation chance constrained programming in the resource supply-distribution model are set up and they are used in a three-tiered-echo model which can describe the kinds of interactive behavior of the agents in the supply chain system. Simulation is done in the platform of Swarm with a genetic algorithm. The results show that the resources in the supply chain complex adaptive system are an organic whole that cannot be separated. The three-tiered-echo model can accurately describe the interaction of resource flows of agents in the supply chain system. The system can attain optimization by utilizing the resources in the supply chain if the agents in the system cooperate, compete and distribute resources according to this model.
基金This research is supported partly by the National Natural Science Foundation of China(G1998020308).
文摘The power system is a classical example of complex systems. In this paper it is shown that the power industry in China is facing a tremendous challenge. The complexity in power systems is investigated as follows. First, the cascade failure in power systems is analyzed, and compared with sand-pile model. Next, we show that the agent-based modelling is a proper way for power network. Mathematically, the geometric dynamics and differential inclusion are useful tools for the stability analysis of large scale power systems. As for power market, the game theory and generalized control system model are proposed. For a complex power system, an evolutive model may be more accurate in description and analysis. Finally, certain newly developed numerical methods in the power system computation are introduced. Overall, we are convinced that the theorem of complexity, combined with modern control theory, may be the right way to answer the challenges faced by the power industry in China.
