two-echelon supply chain model for deteriorating items in an imperfect production system with advertisement and stock dependent demand under trade credit

This article presents a two-echelon supply chain model for deteriorating items, consisting of a single manufacturer and a single retailer, where the customer's demand to the retailer depends on advertisement and the displayed stock level of the retailer. due to the imperfect production system, the manufacturer produces a certain quantity of defective items with the perfect products. the manufacturer inspects all the products immediately after production and sells the ideal quality items to the retailer. to entice the retailer to purchase more products, the manufacturer offers the retailer a trade-credit policy so that the retailer can get a chance to settle his account before the payment for the products. we have developed a cost function of this model. numerical examples have been presented to clarify the applicability of this model and the sensitivity analysis with respect to different parameters involved with the model has been performed to study the effect of the parameter change on the decision variables.