Estimation of wind velocity over a complex terrain using the Generalized Mapping Regressor

Abstract Wind energy evaluation is an important goal in the conversion of energy systems to more environmentally friendly solutions. In this paper, we present a novel approach to wind speed spatial estimation on the isle of Sicily (Italy): an incremental self-organizing neural network (Generalized Mapping Regressor – GMR) is coupled with exploratory data analysis techniques in order to obtain a map of the spatial distribution of the average wind speed over the entire region. First, the topographic surface of the island was modelled using two different neural techniques and by exploiting the information extracted from a digital elevation model of the region. Then, GMR was used for automatic …

Un approccio combinato neurale e geostatistico per la stima dei campi di vento in Sicilia

Un approccio neural kriging per la stima spaziale dei campi di vento in Sicilia

A computational study to explore the molecular mechanisms behind the antiproliferative activity of Nortopsentin derivatives

Wind speed spatial estimation for energy planning in Sicily: introduction and statistical analysis

Abstract The exploitation of the renewable energy sources plays a key role for achieving the CO 2 emissions reduction targets established by the Kyoto Protocol, as well as for facing the shortage of world fossil fuels reserves. In countries like Italy, with an high potential in terms of wind power generation, an efficient energy planning based on renewables is a very complex task. It encompasses many aspects: the resource availability assessment, the compliance with environmental and legislative constraints and last, but not least, the technical aspects linked to the safe integration to the grid of the intermittent power generated by the wind farms. This paper is the first part of a study a…

Wind speed spatial estimation for energy planning in Sicily: A neural kriging application

Abstract One of the first steps for the exploitation of any energy source is necessarily represented by its estimation and mapping at the aim of identifying the most suitable areas in terms of energy potential. In the field of renewable energies this is often a very difficult task, because the energy source is in this case characterized by relevant variations over space and time. This implies that any temporal, but also spatial, estimation model has to be able to incorporate this spatial and temporal variability. The paper deals with the spatial estimation of the wind fields in Sicily (Italy) by following a data-driven approach. Starting from the results of a preliminary study, a novel tech…

Synthesis and antiproliferative activity of [1,2,4] triazino[4,3-a]indoles

A series of [1, 2, 4triazino[4,3-a]indoles was prepared in good yield by reacting 2-diazo-3-ethoxycarbonylindole with methylene active compounds. Derivatives of the title ring system were tested against a panel of 60 human tumor cell lines, and showed inhibitory activity against a wide range of cancer cell lines at micromolar concentration.

La valutazione di un percorso di "bilancio di risorse"

Per le loro finalità generali, le azioni di orientamento possono senza dubbio considerarsi interventi in ambito psicosociale, e come tali per esse può considerarsi imprescindibile il tema della valutazione (Fraccaroli e Vergani, 2004). Attraverso la verifica della qualità delle attività offerte e degli effetti che esse hanno sull’utenza, si può comprendere se tali interventi abbiano funzionato o meno, in che misura, in che modo e, con adeguate riflessioni a margine, perché. La valutazione di una azione di orientamento dovrebbe assumere come oggetto di analisi diverse dimensioni, non necessariamente convergenti (Ferrieux e Carayon, 1998; Tronti, 2002). Un serio problema nasce dal fatto che n…

Novel techniques for wind speed spatial estimation