Ford Whitman Harris first presented the familiar economic order quantity (EOQ) model in a paper published in 1913. Even though Harris's original paper was disseminated widely, it apparently was unnoticed for many years before its rediscovery in 1988. During this period much confusion developed over the origin of the EOQ model. This paper explores the early literature on this model and traces th...

James Allen defined a calculus of time intervals in [A1183], as a representation of temporal knowledge that could be used in AI. We shall call this the Interval Culculus. In his paper, Allen investigated specification and constraint satisfaction in the Interval Calculus. Other constraintsatisfaction algorithms for intervals have considered subclasses of Boolean formulas only. The methods herein...