We consider the reorder point, order quantity inventory model where the demand, D, and the lead time, L, are independently and identically distributed (iid) randiom variables. This model is analytically intractable because of order crossover. However, we show how to resolve the intractability by...

We investigate the impact of order crossover on a periodic, order-up-to (R,S) inventory system where attaining a target service level is the focus. Order crossover, when orders arrive in a sequence different from that in which they were originally placed, is increasingly likely to occur in...

We introduce a heuristic method for finding good, feasible solutions for multiproduct lot sizing problems with general assembly structures, multiple constrained resources, and nonzero setup costs and setup times. We evaluate the performance of this heuristic by comparing its solutions to optimal...

This dissertation addresses the issue of capacity management in a professional services context; specifically a call center based support operation with contractually committed Service Level Agreements (SLAs). The focus of this research is on capacity planning in the face of uncertainty. I...

This dissertation investigates the coordination between new and used product sales using both empirical and analytical approaches.The first essay studies the potential for cannibalization of new product sales by remanufactured versions of the same product, which is a central issue in managing...