Hark Hwang

TL;DR: This article deals with the problem of determining the retailer's optimal price and lot size simultaneously when the supplier permits delay in payments for an order of a product whose demand rate is represented by a constant price elasticity function.

TL;DR: In this article, a joint EOQ and EPQ model was proposed to solve the problem of the stationary demand can be satisfied by recycled products and newly purchased products, where the recovered products were regarded as perfectly new ones.

TL;DR: This paper forms two types of mathematical models from which algorithms are derived based on properties of an optimal solution of the retailer's optimal price and order size simultaneously under the condition of order-size-dependent delay in payments.

TL;DR: In this article, the problem of determining an optimal length of credit period from the perspective of a supplier was considered and two widely used demand functions were adopted for the study in which demands are decreasing functions of the retail price.

TL;DR: In this article, the problem of determining the retailer's optimal price and lot size simultaneously under conditions of permissible delay in payments is investigated, and an algorithm whose validity is illustrated through an example problem is developed.