The paper presents the implementation of a MOLP model for selecting the bundle of measures that should be implemented in Greece in order to comply with the Kyoto target at minimum cost and maximum environmental and social benefits. The second objective function results from a MCDA approach including all these side effects and providing an aggregated index according to the stakeholders’ preferences. The decision variables under consideration refer to the different measures for greenhouse gas emissions reduction, while a separate decision variable is introduced for the trading of emission allowances. A sensitivity analysis is performed for examining the effect of different prices that may be established in the emission trading market, as well as of the varying preferences of the involved stakeholders.

We model in this paper a two-period electricity market with interdependent demand, where oligopolistic generators make investments in peak and base load capacities. Different prices are obtained in the two periods, and consumers transfer some of their demand from the high price period to the low price period. The rate of transfer is however exogenous, as it depends also on price awareness, education and the use of adequate technologies. A regulator influences the rate of transfer by investing in activities raising the influence of these factors. We characterize the Cournot equilibrium obtained as a function of rate of transfer and analyze the optimal strategy of the regulator in investing in activities raising the rate of transfer’s value.

L'épaisseur optique des aérosols (ÉOA) est un paramètre important des modèles de transfert radiatif de l'atmosphère. Les mesures de l'ÉOA proviennent de deux sources complémentaires: les photomètres solaires (bonne couverture temporelle, échantillonnage spatial épars) et certaines images satellites (couverture temporelle très limitée, échantillonnage spatial dense). En pondérant ces deux sources selon leur incertitude respective, nous cherchons à obtenir une interpolation spatiale et temporelle complète de l'ÉOA au-dessus de l'Amérique du Nord. Le comportement local et le haut degré de continuité de l'ÉOA nous suggèrent d'utiliser une méthode de type moindres carrés appliquée sur les fonctions B-splines bicubiques.

We introduce the pollution permit system into the multi-period transportation equilibrium model. The solution technique employs sequential nonlinear programming to calculate the intertemporal equilibrium of the transportation network system. With various pollution emission levels, the calculation results of the improved model may provide not only the optimal system cost with emission reductions but also a view of the impact of pollution emission control on the transportation sector over a certain time periods.