Calculating return periods and critical layers (i.e., multivariate quantile curves) in a multivariate environment is a di cult problem. A possible consistent theoretical framework for the calculation of the return period, in a multi-dimensional environment, is essentially based on the notion of...

Small to medium enterprises (SME) are frequently associated with high levels of innovation. However, it is difficult for such firms to fully assess the merits of a particular innovation. This study examined the risk-return profile of future investment in innovation by SME with respect to...

The METSTOR project offers a methodology to look for potentially interesting CO2 storage areas in France at the initial stage, before the "site selection" step. Our tool, embodied in a Geographic Information System, is based on an interactive map of CO2 storage capacities. Other relevant...

À partir de la thématique énergétique à Istanbul, ce mémoire apporte des éléments de réponse à la double interrogation suivante : comment les structures de gouvernance locale se sont-elles adaptées aux injonctions du développement urbain durable ? ; dans une métropole déjà...

World reserves of natural gas are abundant and expected to increase up to 2050. World gas production is projected to more than double between 2000 and 2050. However, regional disparities in gas reserves and production costs are expected to modify the regional gas supply pattern in 2050: about...

This paper aims to investigate the transition to a new energy system based on hydrogen in the European liberalized framework. After analyzing the literature on the hydrogen infrastructure needs in Europe, we estimate the size and scope of the transition challenge.We take the theoretical...

Russia and its main gas company Gazprom, essential suppliers for the European gas market, are today at the centre of the debate surrounding the security of the European Union's gas supply. A variety of factors have focussed interest on the question of Gazprom's industrial strategies and more...

In this article we present a continuous time model for natural gas and crude oil future prices. Its main feature is the possibility to link both energies in the long term and in the short term. For each energy, the future returns are represented as the sum of volatility functions driven by...

Ce mémoire vient questionner l'accès à l'énergie en Tunisie par le cas du développement du réseau de gaz naturel dans l'agglomération sfaxienne. À la croisée de thématiques comme les services urbains en réseau ou encore la ville durable dans les pays arabes, l'enjeu est ici d'analyser...

In this paper, we describe an analysis framework we developed in order to analyze the implementation of a simplification strategy in a Swiss Canton. This strategy is based on a participatory analysis of services and on the development of eGovernment foundations through the use of open standards...