Operations reversal is a process design principle that involves switching two consecutive stages of the manufacturing process to improve process performance. In this paper we investigate conditions under which operations reversal can be used to reduce the variability---as measured by the...

An important feature of emergency ambulance systems is that the probability of any given unit being busy is dependent upon which of the other units are busy. An analytical model incorporating this feature is developed and found to be reliable in predicting the entire response time distribution...