Using a cross-country analysis, this paper examines the determinants of the Italian intra-industry trade in vertically differentiated products. By considering the degree of specialization by quality within industries, we found that Italys IIT in low-quality products is higher the lower the...

The diffusion in time of a new product in a monopolistic or oligopolistic market can be described by a system of evolution equations (PDE, ODE, DDE) containing one or more control parameters (advertising, prices, plant locations, ...). The productors choose the control parameters in order to...

It is generally known that forest fires are one of the main factors of environmental degradation. Although a great deal of scientific literature on this issue exists, little progress has been made to help us understand and explain the reasons for their appearance. In this work we highlight how...

This work remarks the need to carefully evaluate the real importance of each variable used in a multivariate analysis context, with particular regard to cases when an overall performance ranking is the main final purpose. In particular, both a preliminary transformation of variables – aimed at...

The problem of resource extraction (both renewable and nonrenewable) can be studied by considering two important aspects: competition among extractors and intergenerational equity. In resource extraction activity actions of present generations influence the choices of future generation in an...

Among the several aspects concerning the concept of sustainable agriculture, a very important one is related to food security which requires maintaining constant or increasing agricultural productivity over time. Believing that the Albanian agricultural farm structure should be reorganized to...