Early attempts to develop a modern model for the assessment of performance of portfolios of instruments belong to American teacher Harry Markowitz. He has abandoned the classical approach of the analysis of financial investment (based solely on technical and fundamental analysis), pointing...

In this article we try to determine whether there is a relation between the quantity of athmospheric methane and the number of diseases of circulatory system, at the level of the whole country.We first analyze the time series of the quantity of pollutant between 1990 and 2008 and then we predict...