According to the operational characteristics of the logistics networks for the third party logistics supplier （3PLS）, the forward and reverse logistics networks together for 3PLS under the uncertain environment are ...According to the operational characteristics of the logistics networks for the third party logistics supplier （3PLS）, the forward and reverse logistics networks together for 3PLS under the uncertain environment are designed. First, a fuzzy model is proposed by taking multiple customers, multiple commodities, capacitated facility location and integrated logistics facility layout into account. In the model, the fuzzy customer demands and transportation rates are illustrated by triangular fuzzy numbers. Secondly, the fuzzy model is converted into a crisp model by applying fuzzy chance constrained theory and possibility theory, and one hybrid genetic algorithm is designed for the crisp model. Finally, two different examples are designed to illustrate that the model and solution discussed are valid.展开更多
The distribution–allocation problem is known as one of the most comprehensive strategic decisions.In real-world cases,it is impossible to solve a distribution–allocation problem completely in acceptable time.This fo...The distribution–allocation problem is known as one of the most comprehensive strategic decisions.In real-world cases,it is impossible to solve a distribution–allocation problem completely in acceptable time.This forces the researchers to develop efficient heuristic techniques for the large-term operation of the whole supply chain.These techniques provide near optimal solution and are comparably fast particularly for large-scale test problems.This paper presents an integrated supply chain model which is flexible in the delivery path.As solution methodology,we apply a memetic algorithm with a novelty in population presentation.To identify the optimum operating condition of the proposed memetic algorithm,Taguchi method is adopted.In this study,four factors,namely population size,crossover rate,local search iteration and number of iteration,are considered.Determining the best level of the considered parameters is the outlook of this research.展开更多
文摘According to the operational characteristics of the logistics networks for the third party logistics supplier （3PLS）, the forward and reverse logistics networks together for 3PLS under the uncertain environment are designed. First, a fuzzy model is proposed by taking multiple customers, multiple commodities, capacitated facility location and integrated logistics facility layout into account. In the model, the fuzzy customer demands and transportation rates are illustrated by triangular fuzzy numbers. Secondly, the fuzzy model is converted into a crisp model by applying fuzzy chance constrained theory and possibility theory, and one hybrid genetic algorithm is designed for the crisp model. Finally, two different examples are designed to illustrate that the model and solution discussed are valid.
文摘The distribution–allocation problem is known as one of the most comprehensive strategic decisions.In real-world cases,it is impossible to solve a distribution–allocation problem completely in acceptable time.This forces the researchers to develop efficient heuristic techniques for the large-term operation of the whole supply chain.These techniques provide near optimal solution and are comparably fast particularly for large-scale test problems.This paper presents an integrated supply chain model which is flexible in the delivery path.As solution methodology,we apply a memetic algorithm with a novelty in population presentation.To identify the optimum operating condition of the proposed memetic algorithm,Taguchi method is adopted.In this study,four factors,namely population size,crossover rate,local search iteration and number of iteration,are considered.Determining the best level of the considered parameters is the outlook of this research.
