Games of influence in climate change negotiations: Modelling interactions

Evaluation MOISA - Auteur hors unité au moment de la publicationInternational audienceWe present an integrated framework for structuring and evaluating dynamic climate change decision-making taking into account influential processes occurring during negotiation rounds. Imitation, persuasion and dissuasion are considered. To represent negotiation outcomes, we define a stochastic model derived from concepts of thermodynamics. We use the master equation to describe games of influence. We illustrate the model by simulating the formation and the evolution of a cooperative coalition in the course of a negotiation round. We derive conditions for the emergence and the enlargement of a cooperative agreement. © 2007 Elsevier B.V. All rights reserved

New sufficient conditions for the g-maximum inequality

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Coalitional ZP-Equilibrium in Games and its Existence

International audienceWe introduce a solution concept for games in normal form with undetermined parameters, coalitional ZP-equilibrium, based on the notions of Z-equilibrium of [Zhukovskii and Chikrii [1994] Linear quadratic differential games, Kiev, Naoukova Doumka] and ZS-equilibrium of [Larbani and Lebbah [1999] A concept of equilibrium for a game under uncertainity. Europ. J. Oper. Res. 117, 145-156]. For each coalition structure, ZP-equilibrium ensures both the stability of the partition and equilibrium of coalitional strategies (in Pareto sense). We show that under some quasiconcavity conditions on payoff functions, the coalitional ZP-equilibrium exists in compact, convex and continuous normal form games involving undetermined parameters

Equilibria in finite multicriteria Two-person non-zero-sum game

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Une approche évolutionnaire des négociations internationales en présence de problèmes environnementaux globaux

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Emission trading and international competition: The impact of labor market rigidity on technology adoption and output

International audienceEmission trading systems have been proposed in different regions to reduce polluting emissions and are in use in the European Union for carbon dioxide emissions. One of the objectives of these systems is to encourage firms to adopt advanced abatement technologies. However, permits also create an incentive to reduce output, which may be seen as negative by policy makers. We analyze the impact of a rigid labour market on these two outcomes, showing the conditions necessary to avoid reductions in production while keeping the incentives to improve abatement technologies. The analysis is done for oligopolistic firms engaged in international rivalry

Coalition stability with heterogeneous agents

International audienceWe analyze coalition formation with heterogeneous agents based on an individual stability concept. Defining exchanging and refractory agents, we give existence and enlargement conditions for coalitions with heterogeneous agents. Using the concept of exchanging agents we give necessary conditions for internal stability and show that refraction is a sufficient condition for the failure of an enlargement of the coalition