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In the process of indoor pedestrian evacuation, the game between pedestrians greatly influence evacuation efficiency. In this paper, we introduce the boycott strength into the updated game strategy coefficient in order to investigate the influence of boycott strength on the evacuation efficiency. The relations between the evacuation time and boycott strength for different pedestrian densities and exit widths are obtained by numerical simulations based on cellular automaton model. The results show that the vying behaviors are extremely easy to spread and the crowd will turn into a vying state when the boycott strength is small. When the pedestrian density is low and the exit is wide, we encourage the pedestrians to imitate the winners to update their game strategies via offering the information about standardizing roles about rapid evacuation. When the pedestrian density is high and the exit is narrow, the information about standardizing roles about avoiding to congestion is provided. Thus, the evacuation efficiency can be enhanced. Finally, the optimal boycott strength corresponding to the shortest evacuation time in different conditions is yielded. Our study provides a new perspective to enhance the efficiency of indoor pedestrian evacuation.
In the process of indoor pedestrian evacuation, the game between pedestrians greatly influence evacuation efficiency. In this paper, we introduce the boycott strength into the updated game strategy coefficient in order to investigate the influence of boycott strength on the evacuation efficiency. The relations between the evacuation time and boycott strength for different pedestrian densities and exit widths are obtained by numerical simulations based on cellular automaton model. The results show that the vying behaviors are extremely easy to spread and the crowd will turn into a vying state when the boycott strength is small. When the pedestrian density is low and the exit is wide, we encourage the pedestrians to imitate the winners to update their game strategies via offering the information about standardizing roles about rapid evacuation. When the pedestrian density is high and the exit is narrow, the information about standardizing roles about avoiding to congestion is provided. Thus, the evacuation efficiency can be enhanced. Finally, the optimal boycott strength corresponding to the shortest evacuation time in different conditions is yielded. Our study provides a new perspective to enhance the efficiency of indoor pedestrian evacuation.
The conflicts between pedestrians and vehicles at unsignalized intersections are rather dangerous. Besides the motion features, pedestrians and vehicle drivers also have behavioral features, so modelling the crossing behaviors of pedestrians and vehicles from the sociological aspect is necessary. Through an in-depth analysis of the interference mechanism between pedestrians and vehicles at unsignalized intersections, in this paper, a dirty faces game to analyze the crossing behaviors of pedestrians and vehicles as “rational man” is proposed. The formation process of common knowledge, the producing mechanism of dominant strategy and the kinetic process of dirty faces game are analyzed. Under the assumption of probability of the dominant strategy and distribution of crossing times, theoretical derivations of the benefits gained by pedestrians and vehicles as well as the conflict probability are given. Results show that a collision is more likely to occur when the theoretical time of pedestrian passing through is closer to that of the vehicle driver, and this is consistent with the actual situation. Furthermore, the influences of vehicle type, waiting time and heterogeneity of pedestrians on the conflict probability are also considered.
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