Janthratip Khamwarut

An optimal stock level and pricing strategy for perishable products under the VMI system - Pathum Thani : Asian Institute of Technology, 2024 - 54 leaves : ill.+ 1 online resource - Thesis ; no. ISE-24-04 . - Asian Institute of Technology. Thesis ; no. ISE-24-04 .

A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Industrial and Manufacturing Engineering

Thesis (M. Eng.) - Asian Institute of Technology, 2024

Vendor-managed inventory (VMI) is an approach used to ensure that perishable items are always available while also improving operational efficiency and compliance with quality standards. In this study, we study a new decision scenario concerning a deteriorating item, focusing on the case of a single vendor and single retailer under VMI system. We develop the mathematical model considering the base stock policy, which will be implemented with a maximum stock level (S), with adjustments made to discount prices based on shelf life to encourage a retailer to buy products. Demand rates are influenced by pricing, assuming that the rate of deterioration for a deteriorating item follows a Weibull distribution and a fully backlogged shortage. To assess the efficacy of the proposed models, we conduct numerical experiments and sensitivity analyses. These analyses aim to evaluate how changes in input variables impact experimental outcomes and shed light on the effects of alterations in input parameters on optimal solutions. Finally, we present the conclusions drawn from our study, along with recommendations for future research.


Inventory control--Mathematical models
Weibull distribution
Perishable goods--Inventory control