Under increased scrutiny from top management and shareholders, marketing managers feel the need to measure and communicate the impact of their actions on shareholder returns. In particular, how do customer value creation (through product innovation) and customer value communication (through marketing investments) affect stock returns? This article examines, conceptually and empirically, how pro...

In this paper we consider multi–inventory systems in presence of uncertain demand. We assume that i) demand is unknown but bounded in an assigned compact set and ii) the control inputs (controlled flows) are subject to assigned constraints. Given a long–term average demand, we select a nominal flow that feeds such a demand. In this context, we are interested in a control strategy that meets at ...

Precise fluid flow control is one of the most important aspects of many chemical processing systems, both reactive and analytical. Recent research has led to a sensor capable of very precisely measuring mass flows up to 1g/h, based on the Coriolis principle. However, applying such a measurement in a flow control system is not yet possible, as valves capable of regulating such small flows do not...