We consider the dynamic repair allocation problem for a general multi-component system that is maintained by a limited number of repairmen. Component functioning and repair times are exponentially distributed random variables with known parameters. At most one repairman may be assigned to a...

A Markov model of sequential R&D investment, where successful firms are assumed to have an advantage in related follow-on R&D, is formulated and a solution approach is given. Under this assumption, profit maximizing firms must consider the effect of R&D investments on their future market...

This note corrects an error in van Nunen and Puterman (van Nunen, J. A. E. E., M. L. Puterman. 1983. Computing optimal control limits for GI/M/s queueing systems with controlled arrivals. Management Sci. 29 725--734.) and extends some of their results to the average reward case.

We consider a GI/M/s queuing system that is controlled by either accepting or rejecting arriving customers. Under weak conditions on the cost structure, Stidham (Stidham, S., Jr., 1978. Socially and individually optimal control of arrivals to a GI/M/1 queue. Management Sci. 24 1598--1610.)...