This paper focuses on a firm selling a make-to-stock product with a constant customer demand rate. The firm follows an exact (Q, r ) policy for raw material inventory control and faces a random eplenishment lead time. Through this research, we wish to gain a better understanding of the impact of...

The processing time of large orders is, in many industries, longer than that of small orders. This renders supply lead times in such settings to be increasing in the order size. Yet that pattern is not reflected in existing inventory control models, especially those allowing for random lead...