RT info:eu-repo/semantics/article T1 Optimal policy for an inventory system with demand dependent on price, time and frequency of advertisement. A1 San-José Nieto, Luis Augusto A1 Sicilia Rodríguez, Joaquín A1 Abdul-Jalbar Betancor, Beatriz K1 Inventory K1 Profit maximization K1 Advertisement-dependent demand K1 Time and price-dependent demand K1 Non-linear holding cost AB This paper studies a new lot-size inventory problem for products whose demand pattern is dependent on price, advertising frequency and time. It is considered that the demand rate of an item multiplicatively combines the effects of a power function dependent on the frequency of advertisement and a function dependent on both selling price and time. This last function is additively separable in two power functions, one varies with the selling price and the other depends on the time since the last inventory replenishment. More over, it is assumed that the holding cost per unit of item is a non-linear function of time in stock. Shortages are not allowed. The aim consists of determining the frequency of advertisement, the selling price and the length of the stock period to maximize the average profit per unit time. This leads to a mixed integer non-linear inventory problem, which is solved by using an efficient algorithm previously developed. The inventory model considered here extends several inventory models previously proposed in the literature. Some numerical examples are solved to illustrate how the algorithm works to obtain optimal inventory policies. Finally, a sensitivity analysis for the optimal solution with respect to the parameters of the inventory system is presented. YR 2020 FD 2020 LK http://riull.ull.es/xmlui/handle/915/35778 UL http://riull.ull.es/xmlui/handle/915/35778 LA en DS Repositorio institucional de la Universidad de La Laguna RD 17-may-2024