The definition of correlation is generalized to random vectors whose second moment may not exist. The properties of generalized correlation coefficient are investigated with respect to linear transformations and special families of distributions.

Forest fires are one of the main factors of environmental degradation, since they cause wildlife destruction, air pollution problems and consistently contribute to the threat of the hydrogeological equilibrium. For this reason, much effort is generally made to avoid their occurrence. Although a...

This work examines the main theoretical and empirical interpretations of the effects of FDI on the productivity of local firms and, in particular, the way in which productivity spillovers are related to regional differences. In studying the Italian manufacturing sector, using cross-sectional...

The Barcelona Declaration's objective of establishing a free trade area in the Mediterranean region by the year 2010 is felt as a menace by the Southern European with respect to the feasible openings to increasing imports' flows from non E.U. Mediterranean countries (MEDs). To see how much are...

We model an International Environmental Agreement as a two stages game: during the first stage each country decides whether or not to join the agreement while, in the second stage, the quantity of emissions reduction is choosen. Players determine their abatement levels in a dynamic setting,...

The present paper aims to introduce the principal definitions and proof of fundamental properties of the so called "Way Below" relation. We introduce an alternative proof, with respect to \cite{Scott}, of the strong interpolation theorem. The strong interpolation theorem is the theoretical...

We present cross and time series analysis of price fluctuations in the U.S. Treasury fixed income market. Bonds have been classified according to a suitable metric based on the correlation among them. The classification shows how the correlation among fixed income securities depends strongly on...