The relationship between two alternative approaches, instrumental variables and control function procedures, for estimating the impact of endogenous treatment effects are examined. Although it is well known that the two approaches generate comparable estimates, the relationship between the...

The integration of product recovery into regular production processes enables new opportunities for cost savings. It also yields new challenges for inventory management because there are two sources to satisfy product requirements which need to be coordinated by additionally taking into account...

Optimization Theory and Algorithms -- On the Asymptotic Behavior of a System of Steepest Descent Equations Coupled by a Vanishing Mutual Repulsion -- Inverse Linear Programming -- Second-Order Conditions in C1,1 Vector Optimization with Inequality and Equality Constraints -- Benson Proper...