Browsing Faculty of Engineering by OzU Authors "Önal, Mehmet"

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Economic lot sizing problem with inventory dependent demand

Önal, Mehmet; Albey, Erinç (Springer Nature, 2020-11)

We consider an economic lot sizing problem where the demand in a period is a piecewise linear and concave function of the amount of the available inventory after production in that period. We show that the problem isNPhard ...
An EOQ model with deteriorating items and self-selection constraints

Önal, Mehmet; Kundakcıoğlu, Ömer Erhun (Springer Nature, 2020-09)

In this paper, we consider a store that sells two vertically differentiated items that might substitute each other. These items do not only differ in quality and price, but they also target two different customer segments. ...