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Based on the fuzzy programming, this paper puts forward fuzzy time optimal path concerning military traffic and transportation by building fuzzy chance-constraint programming and fuzzy dependent-chance programming. The methods based on genetic algorithm are designed and the problems of necessity node and prohibition node are also dealt with. Finally, an example shows that this algorithm is simple,...
In order to solve the multiple supply chains design (MSCD) problem with two dimensional cooperation, a across-chain horizontal cooperation model with two supply chains is used in this paper. Through hybrid genetic algorithm and software tools Matlab & Lingo, the MSCD problem with two dimensional across-chain horizontal cooperation can be rationally solve. For illustration, a example test is utilized...
In this paper, the vehicle routing problem with time windows (VRPTW) was considered, and a mixed integer programming mathematic model of VRPTW was proposed in detail. Meantime, an improved genetic algorithm (IGA) was proposed to overcome the shortcomings of premature convergence and slow convergence of conventional genetic algorithm (GA). The novel crossover-operator, swapping operator and inversion...
When large scale emergency incident happens, the multi-category emergency goods distribution is a complex problem. To improve structure and efficiency of emergency goods distribution, a multi-objective non-linear optimization programming model for emergency goods distribution is established. Modeling precondition is analyzed in detail, some objectives such as minimizing the waiting time, the transportation...
The fixed charge transportation problem is an extension of the traditional transportation problem in which two kinds of costs, say direct cost and fixed charge, are taken into consideration. The direct cost is the cost associated with each source-destination pair, and the fixed charge occurs when the transportation activity takes place in the corresponding source-destination pair. In this paper, the...
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