This paper analyzes the special features of electricity spot prices derived from the physics of this commodity and from the economics of supply and demand in a market pool. Besides mean-reversion, a property they share with other commodities, power prices exhibit the unique feature of spikes in...

Portfolio theories are meant to provide a method for managing assets and constructing portfolios. Meanwhile, the mean-variance technique has been heavily criticized by some academics, and its application to real estate portfolio is questionable (Cheng and Liang, 2000). Indeed, the mean-variance...

This article proposes a new empirical methodology for computing a cross-market volatility index - coined CMIX - based on the Factor-Dynamic Conditional Correlation (DCC) model, implemented on volatility surprises. This approach solves problems in treating high-dimensional data and estimating...

In this article, we propose to revisit the concept of strategic alignment in a practice-based perspective. We propose new insights on this concept which has mostly been studied in the literature through Henderson and Venkatraman’s strategic alignment model (1993). In a grounded approach, we...

This article is centred on the volatility of commodity prices. It presents the instruments offering a protection against volatility and shows how they can be employed. The first section exposes these derivative instruments. It distinguishes them in step with the need they respond and the way...

Ce chapitre s'intéresse à la construction d'un modèle comme représentation simplifiée des structures d'un phénomène réel, capable d'en expliquer ou d'en reproduire dynamiquement le fonctionnement. L'activité de construction d'un modèle se conçoit alors comme l'identification des...

Dans une société très inégalitaire, comme la société péruvienne, l’éducation supérieure est perçue comme le principal canal d’ascension sociale. Une égalité d’opportunité dans l’accès à l’éducation supérieure est un enjeu essentiel aussi bien en terme d’efficacité...

L’objet de la communication est de produire de la connaissance praticable sur l’organisation du travail, en construisant de nouveaux indicateurs de mesure de l’organisation du travail, quantitatifs et qualitatifs. Nous testons leur validité et leur fiabilité sur la base des données...

“Why are so many models designed and so few used” is a question often discussed within the Operational Research (OR) community. The formulation of the question seems simple, but the concepts and theories that must be mobilised to give it an answer are far more sophisticated. Would there be a...