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National grain reserve is important in terms of responding to disasters and the unbalance between supply and demand in many countries. In China, the government supplements grain supply through online auctions. This study focuses on the auction policy of national grain reserve. We develop an agent-based simulation model of China's wheat market with detail descriptions of different agents, including...
The Aiming at the lack of an agreed and standard modelling technique of safety workflow management systems, A model of uniform Petri Net for safety workflow management is presented based on Petri Net, in which the four patterns of sub- Petri Net along with algorithms are proposed to model resource allocation and assignment decision, a set of composition rules are proposed to guarantee that the patterns...
The safety of the complex systems depends not only on all failed states of system components, but also on the sequence of occurrences of those failures. Classical methods in sequential failure analysis always starts with given sequences of the failures in the system, so the sequences of the failures should be identified and the probability of their occurrences should be determined. The method used...
Aiming at the problem of pattern recognition for the complex information systems with many dynamic fault types, a dynamic pattern classifier is constructed based on fuzzy Petri nets for the fault classification of complex information systems. fuzzy Petri net is a machine-learning algorithm that has been successfully used in pattern recognition for cluster analysis. In this paper, the dynamic recognition...
The analysis for complex information system includes both the structural system aspects and the system behavior, which can be achieved by nested Petri nets in the paper, i.e. Petri nets in which tokens can be nested relational data. Firstly, each place of a net represents a nested relation scheme, and the marking of each place is given as a nested relation of the respective type. Secondly, insert...
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