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A two echelon location-routing model with considering Value-at-Risk measure / Nader Azad in International journal of management science and engineering management, Vol. 5 N° 3 (Juin 2010) 

Public ISBD [article]  in International journal of management science and engineering management > Vol. 5 N° 3 (Juin 2010) . - pp.235-240 Titre : A two echelon location-routing model with considering Value-at-Risk measure Type de document : texte imprimé Auteurs : Nader Azad, Auteur ; Hamid Davoudpour, Auteur Année de publication : 2011 Article en page(s) : pp.235-240 Note générale : Management Langues : Anglais (eng) Mots-clés : Supply  chain  network  Location  -routing  Value-at-risk  Tabu  search Résumé : In this paper, we present a distribution network design problem in supply chain system which optimizes location, and routing decisions. We propose a two-stage supply chain model which involves determining simultaneously the best sites for the distribution centers and determining capacity for distribution centers and the best strategy for distributing the product from the suppliers to the distribution centers and from distribution centers to the customers and the routes of the vehicles. Each customer's demand is uncertain and follows a normal distribution. For the first time in the location-routing problem, we introduce a new solution methodology that adopts from the finance literature, to optimize the Value-at-Risk (VaR) measure in our problem.A heuristic method is developed for solving the problem. The heuristic method is decomposed into two phases: distribution center location-allocation phase, and routing phase. First of all, an initial solution is determined, then a Tabu search algorithm is used to improve the initial solution for each phase separately and alternatively. DEWEY : 658 ISSN : 1750-9653 En ligne : http://www.ijmsem.org/OnlineJournal.do/?138.html [article] A two echelon location-routing model with considering Value-at-Risk measure [texte imprimé] / Nader Azad, Auteur ; Hamid Davoudpour, Auteur . - 2011 . - pp.235-240. Management Langues : Anglais (eng) in International journal of management science and engineering management > Vol. 5 N° 3 (Juin 2010) . - pp.235-240 Mots-clés : Supply  chain  network  Location  -routing  Value-at-risk  Tabu  search Résumé : In this paper, we present a distribution network design problem in supply chain system which optimizes location, and routing decisions. We propose a two-stage supply chain model which involves determining simultaneously the best sites for the distribution centers and determining capacity for distribution centers and the best strategy for distributing the product from the suppliers to the distribution centers and from distribution centers to the customers and the routes of the vehicles. Each customer's demand is uncertain and follows a normal distribution. For the first time in the location-routing problem, we introduce a new solution methodology that adopts from the finance literature, to optimize the Value-at-Risk (VaR) measure in our problem.A heuristic method is developed for solving the problem. The heuristic method is decomposed into two phases: distribution center location-allocation phase, and routing phase. First of all, an initial solution is determined, then a Tabu search algorithm is used to improve the initial solution for each phase separately and alternatively. DEWEY : 658 ISSN : 1750-9653 En ligne : http://www.ijmsem.org/OnlineJournal.do/?138.html