Search results for "EFA"
showing 10 items of 1142 documents
Bottari Stefano
2010
voce bio-bibiografica su Bottari Stefano
Testing different ICA algorithms and connectivity analyses on MS patients.
2015
Multiple sclerosis (MS) is a progressive neurological disorder that affects the central nervous system. Functional magnetic resonance imaging (fMRI) has been employed to track the course and disease progression in patients with MS. The two main aims of this study were to apply in a data-driven approach the independent component analysis (ICA) in the spatial domain to depict the active sources and to look at the effective connectivity between the identified spatial sources. Several ICA algorithms have been proposed for fMRI data analysis. In this study, we aimed to test two well characterized algorithms, namely, the fast ICA and the complex infomax algorithms, followed by two effective conne…
Surface Characterization of Organic Films for the Conservation of Bronze Archaeological Artefacts
2009
Towards sustainable Net Zero Energy Buildings: life cycle energy performances and environmental impacts of a prefabricated building module
The impact of prefabrication in the building sector is currently undergoing significant growth. Although prefabricated buildings cannot in any situation replace conventional buildings, they have some characteristics, such as reduced construction time, higher safety during construction if compared to traditional buildings and modularity, that make them competitive in specific applications, that are undergoing substantial increase importance and market relevance. However, in a context where the transition towards a low-carbon energy system is quickly becoming an important target of scientific efforts and research, prefabricated buildings, as well as any other type of building, will have a key…
Investigation of sterols as potential biomarkers for the detection of pig (S. s. domesticus) decomposition fluid in soils
2012
This study was carried out to evaluate the potential of using cholesterol and coprostanol, as indicators for the detection of decomposition fluid of buried pigs (S. s. domesticus) in soils. In May 2007, four pig carcasses (~35. kg) were buried in shallow graves (~40. cm depth) at the University of Ontario Institute of Technology in Canada. Two pigs were exhumed after three months (Pig 1, Pig 2) and six months (Pig 3, Pig 4) post burial. Soil samples were collected beneath the pig carcasses (~40. cm depth) and from grave walls (~15-20. cm depth) as well as from a parallel control site. Coprostanol and cholesterol were extracted from soils, purified with solid phase extraction (SPE) and analy…
Validation of Teacher Self-efficacy (QAI) Questionnaire
2021
Negli ultimi anni numerose ricerche nazionali e internazionali hanno messo in evidenza l’importanza della Teacher Self Efficacy. Nonostante nel panorama nazionale esistano già alcuni strumenti che indagano tale costrutto, si notano sovrapposizioni e divergenze nei diversi fattori presi in considerazione, quali ad esempio la percezione di autoefficacia relativa alla possibilità di agire sull’engagement degli studenti e sulla colla- borazione con la famiglia e altre figure professionali. Pertanto l’obiettivo del presente contributo consiste nella costruzione e validazione di un nuovo strumento che tenga conto di entrambi quest’ultimi aspetti. Lo strumento, costituito da 25 item, è stato so…
A comparative economic analysis of torrefied pellet production based on state-of-the-art pellets
2017
Abstract Torrefied pellets have fuel properties superior to those of conventional wood pellets and potentially allow greater rates of co-firing and thus larger reductions in net CO 2 emissions. Despite the growing amount of scientific output on torrefaction, the economic feasibility of torrefied pellet production is still a topic of considerable uncertainty. This is an obstacle for decision makers looking to implement sustainable energy policies. This paper compares the economics of torrefied pellets to conventional wood pellets. Working backwards from demonstrated pellet properties, this work attempts to answer the following question: Based on state-of-the-art torrefied pellets, what would…
La committenza dei Ventimiglia a Cefalù: città e architettura. 1247 - 1398
2009
Lo studio riguarda la committenza dei Ventimiglia, un’importante famiglia aristocratica di origine ligure, protagonista di larga parte della storia siciliana medievale, con la finalità di approfondire il legame tra il casato e la città di Cefalù, posta sulla costa tirrenica della Sicilia. Il centro, di antica origine, deve la sua prosperità e notorietà alla fondazione nel 1131 della cattedrale a opera del primo re di Sicilia, il normanno Ruggero II, e alla conseguente istituzione di una nuova sede vescovile, in posizione baricentrica tra le grandi diocesi di Palermo e Messina, nello spartiacque tra la parte occidentale e orientale dell’isola. I Ventimiglia, tra i più antichi casati nobiliar…
I mille nodi irrisolti. La cattedrale di Cefalù…
2010
La cattedrale di Cefalù, elemento cardine della scena urbana e prestigioso esempio della stagione architettonica inaugurata in Sicilia dai Normanni, contiene nella sua lunga e complessa storia costruttiva, molti nodi ancora problematici; sorta all’inizio del XII secolo, non trovò riferimenti in precedenti costruzioni e il suo cantiere fu il luogo della sperimentazione per le realizzazioni future.
Cefalù, la storia scritta sulle pietre (Lo strabiliante microcosmo di Cefalù letteraria)
2009
Cefalù letteraria