Archive pour janvier 2015

20 Dissertations d’Économie Concours d’Entrée aux Écoles de Commerce Prépas ECE

Simon Porcher et Martin Merle – 20 Dissertations d’Économie Concours d’Entrée aux Écoles de Commerce Prépas ECE Au travers de 20 dissertations entièrement rédigées, ce livre accompagne les étudiants dans leur préparation aux épreuves d’économie du concours d’entrée aux Écoles de commerce, en intégrant les dernières modifications du programme. Plus qu’une leçon, chaque dissertation montre les…

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A Conditional Markov Regime Switching Model to Study Margins: Application to the French Fuel Retail Markets

Raphaël Homayoun Boroumand, Stéphane Goutte, Simon Porcher, Thomas Porcher Abstract : This paper uses a regime-switching model that is built on mean-reverting and local volatility processes combined with two Markov regime-switching processes to understand the market structure of the French fuel retail market over the period 1990-2013. The volatil-ity structure of these models depends on a first exogenous Markov chain,…

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The Permeability of Public Contracts: Evidence from Renegotiations in the French Car Park Sector

Numéro: 2015-1 Zoé Le Squeren and John Moore – The Permeability of Public Contracts: Evidence from Renegotiations in the French Car Park Sector Abstract: Recent research suggests that public and private agreements are inherently different. Public contracts should indeed be more permeable to the external (and, more specifically, the political) environment. This paper studies empirically the intrinsic differences between these two…

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