TY - JOUR ID - 30556 TI - Analyzing and Optimization a Two Echelon Supply Chain with Uncertainly Returned Product JO - Advances in Industrial Engineering JA - AIE LA - en SN - AU - Aghaei, A. AU - Zandi, F. AD - Y1 - 2012 PY - 2012 VL - 46 IS - 2 SP - 119 EP - 132 KW - Admission decision KW - closed loop supply chain KW - Inventory system KW - Manufacturing/ remanufacturing system KW - Matrix geometric method (MGM) KW - Queuing System KW - Uncertainly demand DO - 10.22059/jieng.2012.30556 N2 - High congestion of returned product at remanufacturing facility causes substantial delays and consequently remarketing value losses for time-sensitive and high-tech products with short life cycles, such as electronic equipments. At the remanufacturing site the returned product are inspected and classified according to their quality and processing time in one of the two classes: Class 1 being admitted to the remanufacturing process and class 2 jobs that are rejected. In this paper, we provide a two-echelon supply chain; including inventory system and remanufacturing system. We propose an analytical queuing model for the decisions of the acceptance of return products and the maximum capacity of inventory system. The supply chain is modeled as queuing system and analyzed with matrix geometric method. The maximum capacity of inventory system (S) and admission decision value (k) calculated as the total expected discounted profit are maximized. UR - https://aie.ut.ac.ir/article_30556.html L1 - https://aie.ut.ac.ir/article_30556_126c333157514c762e2e6b290145d291.pdf ER -