This paper studies the link between productivity, innovation and research and development investments at the firm level. We introduce three new features: (i) A structural model that explains productivity by innovation output, and innovation output by research and development investments; (ii)...

Cet article etudie l'impact du pouvoir de marche des entreprises sur le taux de chomage d'equilibre. La premiere partie expose les fondements microeconomiques du pouvoir de marche des entreprises, dans une perspective a la fois empirique et theorique. La deuxieme partie montre que les modeles...

This paper aims to study whether a simple asymetric adjustment costs model with heterogeneity can account for French aggregate job flows.

In this paper we propose two algorithms for solving both unweighted and weighted constrained two-dimensional two-staged cutting stock problems. The problem is called two-staged cutting problem because each produced (sub) optimal cutting pattern is realized by using two cut-phases.

IN this paper, we consider a two-level optimization problem (S) (weak Stackelberg problem) in which the constraints of the upper level problem depend on the set of optimal solutions of the lower level problem, supposed not necessarily a singleton. Using penalty methods, we give an approximation...