This paper develops a two-sector overlapping generations model in which one sector produces an externality on the environmental quality and the other has no effect. We assume that environmental quality degradation results from production activity of one sector. Then, we characterize the...

Ce papier systimatise l'etude de l'existence d'un sentier de croissance optimale durable dans une economie dont les activites productives sont responsables d'emissions polluantes qui s'accumulent dans la nature et degradent le bien-etre des individus. Nous cherchons donc a identifier les...

L'objectif de cet article est de reconsiderer la theorie des irréversibilités decisionnelles dans un cadre non-Bayesien. Nous proposons tout d'abord une typologie de trois effets permettant de distinguer les roles respectifs des irreversibilites et de l'information et de pallier ainsi a une...

The attitude of future generations towards environmental assets could be different from ours, and it is necessary to take into account explicitly this possibility in the current debate about environmental policy. The question we address here is : should uncertainty about future preferences lead...

L'origine de ce travaial reside dans la question, dite teleologique, de la justification de scenarios determines par optimisation intertemporelle, pour les modeles macroeconomiques d'une economie non planifiee, mais susceptible de regulation. On aborde cette question par un approche constructive...

In this paper, we define and study a new class of optimal stochastic control problems which is closely related to the theory of Backward SDE's and forward-backward SDE's. The controlled process takes values in RXR and a given initial data for X(O). Then, the control problem is to find the...

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...

This paper presents a discrete time version of the Romer 1986 model of endogenous growth. The purpose of this work is to propose detailed and simple proofs of existence of optimal solutions and of a competitive equilibrium. The framework implemented here reduces the complexity of the proofs...

We present a new result on the asymptotic behavior of non-autonomous subgradient evolution equations.