Journal
APPLIED MATHEMATICAL MODELLING
Volume 36, Issue 8, Pages 3826-3835Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.apm.2011.11.025
Keywords
Supplier selection; Inventory management; Order quantity allocation; Mathematical programming
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In the literature, decision models and techniques for supplier selection do not often consider inventory management of the items being purchased as part of the analysis. In this article, two mixed integer nonlinear programming models are proposed to select the best set of suppliers and determine the proper allocation of order quantities while minimizing the annual ordering, inventory holding, and purchasing costs under suppliers' capacity and quality constraints. The first model allows independent order quantities for each supplier while the second model restricts all order quantities to be of equal size, as it would be required in a multi-stage (supply chain) inventory model. Illustrative examples are used to highlight the advantages of the proposed models over a previous model introduced in the literature. (C) 2011 Elsevier Inc. All rights reserved.
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