Parallelization of kinetic Monte Carlo algorithm to simulate AL3Sc precipitation

The present paper reports the precipitation process of Al3Sc structures in an aluminum scandium alloy, which has been simulated with a synchronous parallel kinetic Monte Carlo (spkMC) algorithm. The spkMC implementation is based on the vacancy diffusion mechanism. To filter the raw data generated by the spkMC simulations, the density-based clustering with noise (DBSCAN) method has been employed. spkMC and DBSCAN algorithms were implemented in the C language and using MPI library. The simulations were conducted in the SeARCH cluster located at the University of Minho. The Al3Sc precipitation was successfully simulated at the atomistic scale with the spkMC. DBSCAN proved to be a valuable aid to identify the precipitates by performing a cluster analysis of the simulation results. The achieved simulations results are in good agreement with those reported in the literature under sequential kinetic Monte Carlo simulations (kMC). The parallel implementation of kMC has provided a 4x speedup over the sequential version.

Assessment and management of the geomorphological heritage of Monte Pindo (NW Spain): a landscape as a symbol of identity

This study focuses on the granite mountain known as Monte Pindo (627 m above sea level) in the Autonomous Community of Galicia (NW Spain). This territory is included in the area classified as “Costa da Morte” in the “Politica de Ordenación Litoral” (POL) (Coastal Planning Policy) for the region of Galicia. This coastal unit, located between “Rías Baixas” and “Cape Fisterra” has great potential for demonstrating geological processes and its geomorphological heritage is characterized by a high degree of geodiversity of granite landforms. The main objective of our work is to assess the geomorphological heritage of the site, thus revealing its wide geodiversity. We shall analyze and highlight: its scientific value, developing an inventory of granite landforms; its educational valuel and its geotouristic potential. It must be ensured that the Administration understands that natural diversity is composed of both geodiversity and biodiversity. Only then will the sustainable management of Monte Pindo become possible by integrating natural and cultural heritage values. The goal is to ensure that Monte Pindo and its immediate surroundings become a geopark with the aim of promoting local development projects based on the conservation and valorization of its geological heritage.

O efeito da deposição salina nas características das escorrências rodoviárias em zonas costeiras

Tese de Doutoramento em Engenharia Civil.

La televisione nella vita quotidiana dei bambini. II contesto come testo

(Excerto) La ricerca sociologica si colloca sempre in un hie et nunc e lo studio di cui parlen) nel mio intervento non sfugge a questa inconveniente. Come altri studi empirici sui rapporto tra giovani e media, questa lavoro e nato, innanzitutto, dagli interrogativi suscitati dai miei figli, quando erano ancora piccoli. Non posso escludere che quest' interesse sia una sorta di tentativo inconscio di placare Ia mia coscienza di fronte ai problemi che facevo fatica a risolvere ali'interno della mia famiglia. Permettetemi anche di soffermarmi brevemente sui mio paese, il Portogalla, e sulla sua realtii culturale e politica. Vorrei sottolineare che, in una prospettiva di lungo peri ado, alia maniera di Braude!, il mio ·paese ha ritrovato Ia democrazia moho recentemente, dopa mezzo secolo di oscurantismo e di repressione del pensiero e della partecipazione attiva dei cittadini alia vita sociale.