TY - JOUR ID - 72548 TI - A Congested Double Path Approach for a Hub Location-allocation Problem with Service Level at Hubs JO - International Journal of Engineering JA - IJE LA - en SN - 1025-2495 AU - Karimi, Hossein AU - Rezazad, Ata AD - Industrial Engineering, University of Bojnord AD - Department of Industrial Engineering and Managemen, Amirkabir University of Technology (Polytechnic) Y1 - 2015 PY - 2015 VL - 28 IS - 7 SP - 1049 EP - 1058 KW - Hub location allocation KW - inventory service level KW - Congestion KW - double path approach DO - N2 - In this paper an uncapacitated multiple allocation p-hub median problem is discussed. The model minimizes the transportation cost based on inventory service level at hubs through double paths between hubs. Inventory service level is defined as the percent of inventory shortage of vehicles at hubs according to passengers demand and replenishment time of vehicles. A real data from 25 nodes of municipality district 14 of Tehran is used to evaluate the performance of inventory service level in hub networks.  UR - https://www.ije.ir/article_72548.html L1 - https://www.ije.ir/article_72548_8865b1eda7a885dbed044b6d6e7d2cab.pdf ER -