The institutionalized Buen Vivir: a new hegemonic political paradigm for Ecuador

Buen Vivir has recently emerged in Latin America as an alternative societal model to the historical liberal (or neoliberal) and Marxist ones. The article focuses on its Ecuadorian variant and, more specifically, the institutionalized version embodied in the 2008 Constitution and the policies of the Citizens’ Revolution governments. This version is the particular result of the convergence of three different currents and has become the hegemonic ideology in the country. The article describes its main thematic axes and appraises its originality, as well as the theoretical and practical contributions

Ruolo e dinamica di formazione di strati protettivi superficiali nei fenomeni di usura

This paper concentrates on the dynamics of formation of surface layers for an aluminum-silicon alloy sliding against a carburized steel disk under dry conditions. The effects of the apparent contact pressure, sliding velocity and time on the thickness and morphology of the layers are investigated, together with the influence of the accumulation of wear debris in the contact region favored by one of the pin-on-disk geometry used in the study. Emphasis is given to the aspect of subsurface deformation, since deterioration of the layer is known to be caused primarily by delamination

Ruolo e dinamica di formazione di strati protettivi superficiali nei fenomeni di usura

This paper concentrates on the dynamics of formation of surface layers for an aluminum-silicon alloy sliding against a carburized steel disk under dry conditions. The effects of the apparent contact pressure, sliding velocity and time on the thickness and morphology of the layers are investigated, together with the influence of the accumulation of wear debris in the contact region favored by one of the pin-on-disk geometry used in the study. Emphasis is given to the aspect of subsurface deformation, since deterioration of the layer is known to be caused primarily by delaminatio