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سخنرانی کلیدی شماره 3

برگزاری سخنرانی کلیدی با موضوع "مساله مکانیابی هاب در طراحی شبکه توزیع کمک های بشر دوستانه سازمان ملل برای آوارگان سوری در سرتاسر لبنان" توسط دکتر شاهین گلاره


Multi-period Hub Location Problem with Serial Demands: A Case Study of Humanitarian Aids Distribution in Lebanon


we address the problem of humanitarian aids distribution across refugee camps in war-ridden
areas from a network design perspective. We show that the problem can be modeled as a variant of multiperiod hub location problem with a particular demand pattern resulted by the user’s behavior. The problem has been motivated by a case study of Lebanese experience in Syrian war refugee accommodation. We elaborate on the complexity and real-life constraints and,propose a compact formulation of a mathematical model of the problem. We then show that modeling the problem using a Benders paradigm drives O(n3) variables of the original compact model unnecessary in addition to the constraints that are being projected out in a typical Benders decomposition. Additionally,we identify several classes of valid inequalities together with efficient separation procedures leading to a cut-and-Benders approach. Our extensive computational experiments on the case study with real data as well as randomly generated instances proves the performance of proposed solution methods

 



بازگشت1398/11/10
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