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The dynamics of fluid - saturated porous rock is a particularly interesting problem in geophysics and hydrology, nevertheless it is very important in environmental protection as well since it is able to describe, in a lot of situations, the propagation of pollutant substances dissolved in porous environmental matrices. It has been show that, for these systems, the nonlinear effects can be very important to consider. In this paper we'll discuss two novel approaches to the study of the above dynamics: one based on constitutive and conservation equations, the other considering the mass - balance equations for the solute flow and for adsorption rate of solute on the poroelastic matrix. We have shown the first model correctly describes the nonlinear behavior of the fluid pore pressure and pollutants concentration while the second gives the nonlinear term describing advection of which some numerical solutions has been calculated.

This study aims to discuss the contribution of street art projects to the place-making of villages and the effects it generates for local stakeholders.

A conceptual framework is developed based on the main characteristics of the place-making process, street art, creative place-making, as well as place identity, revitalisation and regeneration. This framework defines a set of thematic categories for the qualitative content analysis of online information, e.g. websites, media and blog posts, as well as in-depth interviews with local stakeholders.

This research presents the contribution of street art in place-making involving citizens, local businesses and international artists in a collective act to preserve local identity and revitalise and regenerate villages.

The research is focused only on villages. Cities are not considered in the research.

Street art projects provide villages with several opportunities, such as stimulating place regeneration and revitalisation, giving new shape and decoration to neighbourhoods and streets and attracting visitors and business. Moreover, street art is commonly used to communicate local history, culture, traditions and social and political facts, helping places to vehiculate their identity and their messages to the next generations. Street art is also used as a part of a place branding strategy.

The village gets the opportunity to exploit the street art value proposition to stimulate the restocking of the place, if the primary stakeholders of the place are ready to invest in the new place identity giving trust to the street art project.

Street art projects contribute to the place-making of villages. They are used to communicate place identity, fostering cooperation between local stakeholders and economic and social development.