Professor Charlene Yauch
by Charlene Yauch, Associate Director, QRM Center           It is a long-standing tradition in manufacturing to try to get machines and people to work 100% of the available production time. If you don't, you are not getting the maximum benefit from those resources, right? To fully appreciate why 100% utilization is not a reasonable goal, we first need to understand how the Queuing Guy defines utilization. Who is the Queuing Guy? He's Rajan Suri, the founding director of the Center for Quick Response Manufacturing. His application of system dynamics to manufacturing comes from extensive study of queuing, a branch of operations research that emphasizes how systems behave when there are people or things waiting in line. Others who study queu...