@article { author = {Gholami, Mona and Honarvar, Mahboobeh}, title = {Developing a Mathematical Model for Vendor Managed Inventory Considering Deterioration and Amelioration Items in a Three-Level Supply Chain}, journal = {Advances in Industrial Engineering}, volume = {49}, number = {2}, pages = {237-256}, year = {2015}, publisher = {University of Tehran}, issn = {2783-1744}, eissn = {2783-1744}, doi = {10.22059/jieng.2015.57062}, abstract = {Todays, improving the competitiveness of companies and rapidly responding to diverse customers’ demands requires efficient management of the supply chain. Integration is one of the effective indices in a supply chain, and vendor managed inventory (VMI) is one of the innovative approaches in this field. In this paper, an integrated model based on a VMI system for deteriorating and ameliorating items in a three-level supply chain is developed. To coordinate retailers and producers in the supply chain, the common replenishment cycle is used which is a technique of a VMI system. The assumptions of this model consist of a deterministic demand rate for each retailer, certain production and deterioration rates. Furthermore, in this paper the amelioration of items is mentioned that follow the Weibull distribution. First, a mixed-integer nonlinear mathematical model is presented. Then to validate the proposed model, a numerical example is given. To solve the model, a genetic algorithm method is presented.}, keywords = {Genetic Algorithm,Three levels supply chain,Vendor managed inventory deteriorating and ameliorating items}, url = {https://aie.ut.ac.ir/article_57062.html}, eprint = {https://aie.ut.ac.ir/article_57062_54d6a4c1749ae13af35ac87155dbe2a0.pdf} }