Title: Medical supplies lot-sizing with supplier selection in Thailand healthcare supply chain sector

Authors: Rachanida Rod-iw; Thanakorn Naenna

Addresses: Faculty of Graduate Studies, Mahidol University, Thailand ' Department of Industrial Engineering, Faculty of Engineering, Mahidol University, Thailand

Abstract: The purpose of this paper is to address lot sizing problems assessed with supplier selection for procurement planning in hospital inventories, with specific attention to medical supplies. This situation is considered multi-product, multi-supplier and multi-discount, in particular for fulfilling hospital (medical staff) demands where conditions of space capacity and budget are limited. A mathematical model is presented for a multi-objective, mixed integer nonlinear program using MATLAB and Lingo to create a generic algorithm that proposes to minimise total costs and maximise quality and commercial service by purchasing period. The mathematical model proposed was tested in a hospital and was successfully applied to provide a solution for lot-sizing supplier selection problems in procurement. This model is validated by sensitivity analysis.

Keywords: inventory lot-sizing; supplier selection; space capacity; multi-product; multi-discount; Thailand.

DOI: 10.1504/IJSOM.2022.123103

International Journal of Services and Operations Management, 2022 Vol.42 No.1, pp.129 - 150

Received: 25 Sep 2019
Accepted: 01 Dec 2019
Published online: 26 May 2022 *

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