Research On Several Key Problems Of Logistics System

The emergency logistics system and integrated logistics system are important aspects in logistics system and have become hot topics in recent years.In this paper, for emergency logistics system, the scheduling decision is studied for multi-emergency depots in the continuous consume system. A mathematical model based on the earliest of the emergency time and the fewest retrieval depots is established, and an algorithm is proposed. The fuzzy mathematical programming model of the scheduling decision in fuzzy multi-resource emergency is established, an algorithm of the greatest satisfaction degree for time restraint is proposed.For integrated logistics system, considering the inventory cost of the demand spots and the cost of transport, the location-inventory integrated model of the minimum cost in system is established based on the customer satisfaction degree. The best ordering quantities and safety stock inventory of the demand spots are obtained by using economic ordering quantities equation. The best allocating scheme about the factory on each distribution allocation center and the distribution allocation centers on each demand spot is obtained by the heuristic algorithm.The examples illustrate that these models are rational and algorithms are effective. The research achievements have an important effect on the theory and application of the emergency logistics system and the integrated logistics system.