Managers always want to decrease the cost of the inventory system and increase the customers’ satisfaction. To access to the mentioned aim they should notice the different aspects of their inventory system to become successful in today competitive global marketing. In this research we model...

To access the efficient inventory system, managers should consider all the situations that have happened in reality. One of these situations is the presence of the defective items in each received lot and the other situation is being the group of customers that do not wait to fulfill their...

In this research, a joint pricing and refund optimization problem under cooperative and non-cooperative strategies in a two-stage supply chain consists of a supplier and a manufacturer who produces two types of product; green and non-green is developed. The features of both products in usage and...