Search results for "PES"
showing 10 items of 5212 documents
Carbonate stromatolites from a Messinian hypersaline setting in the Caltanissetta Basin, Sicily: petrographic evidence of microbial activity and rela…
2010
Lower Messinian stromatolites of the Calcare di Base Formation at Sutera in Sicily record periods of low sea-level, strong evaporation and elevated salinity, thought to be associated with the onset of the Messinian Salinity Crisis. Overlying aragonitic limestones were precipitated in normal to slightly evaporative conditions, occasionally influenced by an influx of meteoric water. Evidence of bacterial involvement in carbonate formation is recorded in three dolomite-rich stromatolite beds in the lower portion of the section that contain low domes with irregular crinkly millimetre-scale lamination and small fenestrae. The dominant microfabrics are: (i) peloidal and clotted dolomicrite with c…
RC Masonry infilled frames: Experimental results and development of predictive techniques for the assessment of seismic response
2014
La presenza di tamponamenti in muratura all’interno delle maglie di strutture intelaiate induce, in presenza di azioni laterali, una sostanziale modificazione della risposta globale rispetto a quella dei telai nudi in termini di rigidezza, resistenza e capacità di spostamento. La tesi presenta i risultati di una campagna sperimentale su telai tamponati con diverse tipologie di muratura soggetti a prove di carico cicliche. Successivamente viene proposto un criterio per la modellazione semplificata del comportamento ciclico attraverso un macromodello a puntone diagonale equivalente. Una ulteriore indagine numerica è eseguita per valutare l'entità degli effetti locali dovuti all'interazione fr…
Transparent and sustainable materials
2013
The search for greater transparency in buildings characterizes the current architectural scenario: the use of glass is more and more common in both the design of new buildings and for renovation. However, the design of the transparent part of the building envelope is critical to the achievement of efficiency and sustainability. There are several research companies that aim to improve the energy performance especially of the glass. Today there is a wide range of products capable of providing different solutions, depending on the aesthetic and technical requirements of the structure in question. The aim of this article is to provide a clear overview of the possibilities of the transparent mat…
La comunicazione nel progetto di Architettura
2011
The effective communication of architectural design is one of the crucial steps required by the client public or private. Rendering as the starting point for the communication of architectural design, is the process of generating an image from a three-dimensional model interpreted by algorithms that define the color of each image point. From a smooth 3D model can be realized photorealistic images and real and virtual prototypes may also be obtained.
La Città Selvatica: Paesaggi Urbani Contemporanei, a cura di Annalisa Metta e Maria Livia Olivetti
2021
Rescensione di Metta A., Olivetti M.L. (a cura di, 2019). La Città Selvatica: Paesaggi Urbani Contemporanei, Libria, Melfi
Renewed Sicilian Urban Landscapes. Transformation, Regeneration and Reuse of degraded areas
2020
In this study, through a multidisciplinary approach, some degraded Sicilian urban landscapes, today renewed thanks to urban regeneration interventions, will be ana-lyzed. Cities that look to the future and that react posi-tively to the current ecological and economic crisis. Urban centers that – through collective participation, the support of organizations, cultural associations and the sensitivity of local governments – are investing heavily in the theme of urban regeneration and re-cycling.
Renewed Sicilian Urban Landscapes.Transformation, Regeneration and Reuse of degraded areas
2020
The cities of the future must aim at improving the quality of living through processes of transformation and reuse of degraded, abandoned or underused urban areas. The cities of the future must generate renewed urban landscapes through recovery actions, creative reuse of abandonment, urban recycling, as new and powerful revitalizing forces in urban centers. The cities of the future must be more sustainable, more responsible but also more innovative capable of rethinking, reinventing, redesigning the forms of the settlement, mending relations with the environment and the landscape, reacting to scenarios "contaminated" by human hands and, from today, also from the covid-19 virus. The cities o…
Integration of a structural features-based preclassifier and a man-machine interactive classifier for a fast multi-stroke character recognition
2003
A transputer-based parallel machine for handwritten character recognition is proposed. An algorithm based on structural features and on a tree classifier was used to accomplish the pre-classification of the unknown sample in order to speed up the recognition process. The algorithm for the final classification is based on the description of the strokes through Fourier descriptors. The learning phase is accomplished through a man-machine interactive process. The proposed system can expand its knowledge base. A special representation of this knowledge base is proposed in order to record a great amount of data in a suitable way. A fast multistroke handwritten isolated character recognition syst…
TOWARDS THE DECARBONIZATION OF THE EU BUILDING STOCK: AN INTEGRATED BUILDING STOCK RENOVATION MODELING APPROACH
2020
In Europe, the residential building stock is responsible for about 40% of the energy demand and about 36% of the CO2 emission at global level. Considering that almost 70% of the existing building stock will still be used in 2050, a long-term vision is needed to align with future challenges to avoid having significant increases in carbon emissions. The European policymakers have a long-recognized potential energy saving associated with the renovation of the existing building stocks, as demonstrated by the directives on the Energy performance of buildings (EPBD), introducing also the need to developed an integrated buildings design approach with environmental analysis. The purpose of this the…
Valutazione degli impatti esercitati dalla filiera della pesca
2011
Lo studio si colloca sulla scorta dei risultati elaborati nell’ambito del Rapporto Annuale del 2009, nel quale è stata presentata una rassegna generale dello stato del settore della pesca in Sicilia, con particolare riguardo ai consumi energetici, all’impatto ambientale ed all’innovazione tecnologica nella filiera della pesca e dell’acquacoltura in Sicilia. In questo studio si analizzeranno più in dettaglio alcune situazioni di aziende della filiera ritenute emblematiche delle condizioni del settore in Sicilia, allo scopo di delinearne le esigenze ed i limiti, anche in vista della proposta di introdurre innovazioni tecnologiche mirate e puntuali. Ancora una volta, il tema dell’efficienza en…