In Europe, economic evaluation of flood management projects is becoming a commonly used decision tool. At the same time, flood management policies shift towards new concepts such as giving more room to water by restoring floodplain and living with floods. Agricultural areas are particularly...

La méthode Inondabilité a été développée dans les années 1990 par le Cemagref pour disposer d'un outil d'évaluation du risque d'inondation à l'échelle du bassin versant et proposer un cadre de négociation sur la notion de risque acceptable. Elle repose sur l'idée d'exprimer aléa...

We explore the link between cyclical and smooth resource exploitation. We define an impulse control framework which can generate both cyclical solutions and steady state solutions. For the cyclical solution, we establish a link with the discrete-time model by Dawid and Kopel (1997). For the...

This paper was prepared for the First Journées d'Economie et Econométrie de l'Asssurance, in Rennes, October 22nd and 23rd, 2009. It's a melting pot of several papers that I have written with my co-authors, plus a very short summary of Graciella Chichilnisky enlightening results. But, before...

Catastrophes and risks have had a great influence on the evolution of human development. We analyze behaviors in front of risks, then we consider some basic principles that have guided private and public behaviors. Managing risks has become a specialty for finance and insurance, but they are not...

Real options models characterized by the presence of ambiguity have been recently proposed. But based on recursive multiple-priors approaches to solve ambiguity, these seminal models reduce individual preferences to extreme pessimism by considering only the worst case scenario. In contrast, by...

We explore different possible definitions for conditional Choquet integrals and their implications for updating capacities. Many recent works consider relaxing dynamic consistency within Choquet Expected Utility models, but all of them deal with models where time is not explicitly introduced. We...

This paper studies learning under multiple priors by characterizing the decision maker's attitude toward information. She is incredulous if she integrates new information with respect to only those measures that minimizes the likelihood of the new information and credulous if she uses the...

In the real investments literature, the investigated cash flow is assumed to follow some known stochastic process (e.g. Brownian motion) and the criterion to decide between investments is the discounted utility of their cash flows. However, for most new investments the investor may be ambiguous...