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Determining (s, S) Inventory Policy for Healthcare System: A Case Study of a Hospital in Thailand

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  • Tai Duc Pham

    (Sirindhorn International Institute of Technology, Thailand)

  • Sorachat Sahasoontaravuti

    (Sirindhorn International Institute of Technology, Thailand)

  • Jirachai Buddhakulsomsiri

    (Sirindhorn International Institute of Technology, Thailand)

Abstract

In this paper, an (s, S) policy is determined by using a simulation-optimization approach for a periodic review inventory system at a pharmacy department of a major hospital in Thailand. The simulation, which imitates the inventory system behavior, is constructed on a spreadsheet, while the cyclic coordinate method with a golden section search is adopted as the optimization algorithm. Solutions for the policy's parameters from the search algorithm are evaluated using the simulation, which features randomly generated demand and lead time data from empirical distributions of actual datasets. The objective is to minimize the total inventory cost, including ordering, holding, and shortage costs. This model is applied for 10 medicine items, selected as representatives of the entire item range in the pharmacy department. According to the simulation results, a minimal cost inventory policy for each item is obtained within a short amount of run time. This indicates the effectiveness and efficiency of the proposed approach for this type of problem.

Suggested Citation

  • Tai Duc Pham & Sorachat Sahasoontaravuti & Jirachai Buddhakulsomsiri, 2022. "Determining (s, S) Inventory Policy for Healthcare System: A Case Study of a Hospital in Thailand," International Journal of Knowledge and Systems Science (IJKSS), IGI Global, vol. 13(1), pages 1-18, January.
    • Handle: RePEc:igg:jkss00:v:13:y:2022:i:1:p:1-18
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    References listed on IDEAS

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    1. Xinhui Zhang & Doug Meiser & Yan Liu & Brett Bonner & Lebin Lin, 2014. "Kroger Uses Simulation-Optimization to Improve Pharmacy Inventory Management," Interfaces, INFORMS, vol. 44(1), pages 70-84, February.
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