Irreducibility of joint inventory positions in an assemble-to-order system under (r, nQ ) policies

Joint Inventory Replenishment and Component Allocation Optimization in an Assemble-to-Order System

T paper considers a multicomponent, multiproduct periodic-review assemble-to-order (ATO) system that uses an independent base-stock policy for inventory replenishment. Product demands in each period are integer-valued correlated random variables, with each product being assembled from multiple units of a subset of components. The system quotes a prespecified response time window for each produc...

Optimal Policies for an Assemble-to-Order N-System

We consider an assemble-to-order (ATO) N-system, in which there are two components and two products. One product requires only component-1, while the other product requires both components. The components are kept in stock and are procured from outside suppliers with fixed leadtimes. The final products are assembled only after customer orders are realized. Using a hybrid approach that combines ...

Characterizing order processes of ( s , S ) and ( r , nQ ) policies

In this paper we provide a novel approach to characterize the order process of an (s, S) and an (r, nQ) inventory policy. These inventory policies are commonly used when a fixed order cost is present. We provide two distinct perspectives. First, we analyze the time between subsequent replenishments, as well as the size of the replenishment orders, and characterize the distribution of both. Seco...

Coordinated and Joint Ordering Policies for Two Commodity Inventory System

Evaluating Echelon Stock (R, nQ) Policies in Serial Production/Inventory Systems with Stochastic Demand

T his paper studies echelon stock (R, nQ) policies in serial production/inventory systems with stochastic demand. We provide a recursive procedure to compute the steady state echelon inventory levels of the systems, which can be used to evaluate the long-run average holding and backorder costs as well as other performance measures. The procedure is based upon an observation of a relationship be...