Durağan Olmayan Talep Varsayımı Altında "Tedarik Dönemi" Politikasının Maliyet Performansı Üzerine Bir İnceleme

Bu çalışmada envanter yönetiminin temel politikalarından olan "min-max" (s,S) ve "tedarik dönemi" (R,S) politikaları durağan olmayan talep varsayımı altında maliyet performansı bakımından karşılaştırmıştır. Envanter literatüründe "min-max" politikasının optimal çözüm verdiği gösterilmiştir. Bu çerçevede çalışmanın temel katkısı "tedarik dönemi" politikasının en iyi çözüme olan yakınlığının belirlenmesi yönündedir. Durağan olmayan talep durumu için her iki politika parametrelerinin hesaplanmasına ilişkin yöntemler incelenmiş ve maliyet performansı karşılaştırması geniş bir hipotetik deney seti üzerinde gerçekleştirilmiştir. Test sonuçlan "tedarik dönemi" yaklaşımının özellikle düşük sipariş maliyeti altında "min-max" politikasına çok yakın sonuçlar verdiğini göstermiştir.

Investigation of Cost Performance of Replenishment Cycle Policy under Non-Stationary Demand Assumption

In this study, the Well-known policies of inventory management min-max (s,S) and Replenishment Cycle Policy (R,S) under non-stationary demand assumption are compared in terms of cost performance. It is known that the min-max (s,S) policy gives the optimal solution in inventory literature. The main contribution of this work is to identify the cost performance of the Replenishment Cycle Policy (R,S). The related methods of calculation for both policy parameters under the non-stationary demand assumption are investigated and compared with the cost performance over a large hypothetical experiment. Numerical tests show that Replenishment Cycle Policy (R,S) under the low ordering cost assumption has given results that are close to the min-max (s,S) policy.

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