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An inventory-dependent demand model with deterioration, all-units discount, and return

In this paper, we propose an inventory model with inventory-dependent demand, deterioration, all-units discount and return. Conditions considered in the model are reflected in the real life when a retailer deal with products with deterministic demand having constant deterioration rate. Also, occasionally retailer faces offer from the supplier to buy more products with all-units discount and on the other occasion can return some products to the supplier at some costs. We develop the model that will determine the optimal return time and optimal order quantity that minimize the total cost. The total cost consists of purchasing cost, ordering cost, holding cost, shortage cost and the return cost. We also assume that all shortages are backordered and one tenth of the order quantity are returned to the supplier. We provide some numerical examples to give clearer understanding of our model and find that as the deterioration rate and demand increase, the optimal return time decreases making the optimal order quantity and the total cost increase. Sensitivity analysis is also conducted to analyse the effect of changes in parameter values to the optimal return time, optimal order quantity and the total cost. We consider changes in deterioration rate, inventory-dependent demand rate, return cost and time between replenishment. It is found that changes in return cost do not significantly change the optimal return time, the optimal order quantity and the total cost, compared with changes in deterioration rate, inventory-dependent demand rate and time between replenishment.

Pernyataan Tanggungjawab Neilshan Loedy, Dharma Lesmono, Taufik Limansyah
Pengarang Loedy, Neilshan - Pengarang Utama
Lesmono, Julius Dharma - Pengarang Tambahan
Limansyah, Taufik - Pengarang Tambahan
Edisi
No. Panggil
ISBN/ISSN
Subyek
Klasifikasi
Judul Seri
GMD Computer File
Bahasa Indonesia
Penerbit Universitas Negeri Surabaya
Tahun Terbit 2018
Tempat Terbit Surabaya
Deskripsi Fisik p. 1 - 8
Info Detil Spesifik Makalah dipresentasikan pada MISEIC 2018. Universitas Negeri Surabaya. Surabaya, 21 Juli 2018.
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