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An Inventory Model for Deteriorating Drugs with Stochastic Lead Time

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  • Jian Li

    (Research Base of Beijing Modern Manufacturing Development, College of Economics and Management, Beijing University of Technology, Beijing 100124, China)

  • Lu Liu

    (School of Economics and Management, Beihang University, Beijing 100091, China
    Beijing Key Laboratory of Emergency Support Simulation Technologies for City Operations, Beihang University, Beijing 100091, China
    Beijing International Science and Technology Cooperation Base for City Safety Operation and Emergency Support, Beihang University, Beijing 100091, China)

  • Hao Hu

    (College of Information Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China)

  • Qiuhong Zhao

    (School of Economics and Management, Beihang University, Beijing 100091, China
    Beijing Key Laboratory of Emergency Support Simulation Technologies for City Operations, Beihang University, Beijing 100091, China
    Beijing International Science and Technology Cooperation Base for City Safety Operation and Emergency Support, Beihang University, Beijing 100091, China)

  • Libin Guo

    (College of Information Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China)

Abstract

Inventory management of deteriorating drugs has attracted considerable attention recently in hospitals. Drugs are a kind of special product. Two characteristics of some drugs are the shorter shelf life and high service level. This causes hospitals a great deal of difficulty in inventory management of perishable drugs. On one hand, hospitals should increase the drug inventory to achieve a higher service level. On the other hand, hospitals should decrease the drug inventory because of the short shelf life of drugs. An effective management of pharmaceuticals is required to ensure 100% product availability at the right time, at the right cost, in good conditions to the right customers. This requires a trade-off between shelf-life and service level. In addition, many uncontrollable factors can lead to random lead time of drugs. This paper focuses on deteriorating drugs with stochastic lead time. We have established a stochastic lead time inventory model for deteriorating drugs with fixed demand. The lead time obeyed a certain distribution function and shortages were allowed. This model also considered constraints on service level, stock space and drug shelf life. Through the analysis of the model, the shelf life of drugs and service level were weighted in different lead time distributions. Empirical analysis and sensitivity analysis were given to get reach important conclusions and enlightenment.

Suggested Citation

  • Jian Li & Lu Liu & Hao Hu & Qiuhong Zhao & Libin Guo, 2018. "An Inventory Model for Deteriorating Drugs with Stochastic Lead Time," IJERPH, MDPI, vol. 15(12), pages 1-20, December.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:12:p:2772-:d:188663
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    References listed on IDEAS

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