This paper combines factor demand functions and price equations derived from a Generalized Leontief cost function with the traditional input - output price model. At the first level of aggregation Generalized Leontief cost functions for the factors intermediate input and labour are set up for...

This study explores the reduction potential of greenhouse gases for major pollution emitting countries of the world using nonparametric productivity measurement methods and directional distance functions. In contrast to the existing literature we apply optimization methods to endogenously...

A bicriteria traveling salesman problem with sequence priorities / Heinz Schmitz and Sebastian Niemann -- Metaheuristics for tourist trip planning / Pieter Vansteenwegen [and others] -- Solving fuzzy multi-item economic order quantity problems via fuzzy ranking functions and particle swarm...