Routes planning is one of the most important aspects in emergency evacuation planning. A multi-objective emergency evacuation model using ant colony optimization was proposed for routes planning in complex multi-exit evacuation environment. The two objectives of the model are to minimize the total evacuation time of all evacuees and to minimize the total path crowding degree respectively. A multi-...Show More
Scientific flood operation is great significant for flood resources utilization in the flood season. In the present study, a fuzzy optimization model was proposed to choose the optimum flood dispatch scheme. Thereinto, objective weight was calculated base on entropy coefficient to collect the available data of all alternatives, and subjective weight was also considered by the combination with obje...Show More