Search results for " sistemi"
showing 10 items of 1888 documents
Feasibility analysis and study of a grid-connected hybrid electric system: Application in the building sector
2016
This paper represents the feasibility study and analysis of a grid-connected hybrid (PV-Wind) system with battery, realized within the project DE.DU.ENER.T and installed in the research centre CRTEn located in the northern Tunisia in the city of Borj-Cedria. The main objective of this work is to exploit renewable sources of electrical energy production to electrify the desired building. So, to minimize electricity consumption costs, reduce the adverse effects of pollutants products from the diesel power systems and sometimes happen to sell the surplus of energy produced. The HOMER (Hybrid Optimization Model of Electric Renewable) software is used to estimate system size and its performance …
Lightweight Alloys Recycling and Processing through Innovative Friction Based Direct Technologies
In the last decades, the use of lightweight alloys has been spreading in almost any industrial field thanks to the relevant weight reduction allowed by the use of such materials. On the other hand, aluminium alloys are characterized by high-energy demands primary production cycles that are responsible for a relevant share of the global CO2 emissions. In order to limit and reverse such phenomenon, putting in place strategies to keep the material in the circle over multiple life cycles is mandatory and the concepts of circular economy, closed loop society and industrial symbiosis are progressively gathering more and more pace. Nevertheless, metal scraps are often mainly composed of chips resu…
Fundamental investigation on the mechanical behavior of weld seams
The solid state welding processes allow joints free from defects with reduced residual stresses and low distortion. However, such processes are generally characterized by a complex mechanical junction because of the particular material flow. Therefore, the design and optimization of the processes in which the solid bonding phenomenon occurs are difficult and requires a large number of tests. The purpose of this research is the description on the mechanical behavior of welded seams obtained through the friction stir welding (FSW) and linear friction welding (LFW) processes by analyzing the same phenomenon that occurs in both metallurgical processes, named the solid bonding phenomenon. The ai…
La gestione della qualità ambientale e gli eco-regolamenti edilizi - Environmental quality management and eco-building regulations
2012
The Italian municipalities have taken only the first steps on the road to smart cities. By 2020 thanks to the European Community and the Mayors agreement in 2008, cities aiming to be smart (for energy management,transport, digital technologies, social policy) will focus on sustainable development, by innovations and adequate partners. The general goal of resource saving and use of renewable energy has become a strategic necessity, fully involving architecture, whose environmental load in industrialized countries has become unsustainable. The national regulatory framework is constantly evolving, because the new European Directive 31/2010/CE, repealing the E.D. 91/2002/CE, obliges from Januar…
Linee guida per la redazione di Eco-Regolamenti Edilizi nella Regione Sicilia
2014
In vista degli obiettivi di Horizon2020, e all’interno del dibattito sulle Smart Cities, il tema della sostenibilità dell’ambiente costruito risulta di grande attualità, specie se coniugato con la necessità di garantire un’elevata qualità della vita e una crescita individuale e sociale della comunità, ottimizzando risorse e spazi comuni. Gli attori di questo cambiamento sono i Comuni, che attraverso i propri Regolamenti Edilizi, devono governare la trasformazione del territorio e la realizzazione di nuovi edifici, tecnologicamente all’altezza delle nuove esigenze, anche introducendo incentivi, premi volumetrici, per il perseguimento dei nuovi obiettivi energetici ed ambientali.. In tale qua…
Organizing a sonic space through vocal imitations
2016
A two-dimensional space is proposed for exploration and interactive design in the sonic space of a sound model. A number of reference items, positioned as landmarks in the space, contain both a synthetic sound and its vocal imitation, and the space is geometrically arranged based on the acoustic features of these imitations. The designer may specify new points in the space either by geometric interpolation or by direct vocalization. In order to understand how the vast and complex space of the human voice could be organized in two dimensions, we collected a database of short excerpts of vocal imitations. By clustering the sound samples on a space whose dimensionality has been reduced to the …
Combining split-and-merge and multi-seed region growing algorithms for uterine fibroid segmentation in MRgFUS treatments
2016
Uterine fibroids are benign tumors that can affect female patients during reproductive years. Magnetic resonance-guided focused ultrasound (MRgFUS) represents a noninvasive approach that uses thermal ablation principles to treat symptomatic fibroids. During traditional treatment planning, uterus, fibroids, and surrounding organs at risk must be manually marked on MR images by an operator. After treatment, an operator must segment, again manually, treated areas to evaluate the non-perfused volume (NPV) inside the fibroids. Both pre- and post-treatment procedures are time-consuming and operator-dependent. This paper presents a novel method, based on an advanced direct region detection model, …
Il processo di incubazione per la creazione di imprese vitali. Il caso del Consorzio ARCA
2013
Obiettivi . Il processo di creazione di nuove imprese risulta particolarmente complesso qualora parta da idee altamente innovative che trovano difficolta ad essere percepite come valide dai sovra sistemi. Obiettivo del presente lavoro e dimostrare che gli incubatori accademici svolgono un ruolo determinante per la vitalita di queste imprese. Metodologia . Attraverso un caso studio contraddistinto da un embedded design si analizza l’efficacia del processo di incubazione degli spin-off dell’incubatore del Consorzio Arca. Risultati . L’efficacia del processo di incubazione e dimostrata dall’elevato numero di spin-off che, al termine del periodo di incubazione, sono capaci di competere con succ…
Performance of Radiomics Features in the Quantification of Idiopathic Pulmonary Fibrosis from HRCT.
2020
Background: Our study assesses the diagnostic value of different features extracted from high resolution computed tomography (HRCT) images of patients with idiopathic pulmonary fibrosis. These features are investigated over a range of HRCT lung volume measurements (in Hounsfield Units) for which no prior study has yet been published. In particular, we provide a comparison of their diagnostic value at different Hounsfield Unit (HU) thresholds, including corresponding pulmonary functional tests. Methods: We consider thirty-two patients retrospectively for whom both HRCT examinations and spirometry tests were available. First, we analyse the HRCT histogram to extract quantitative lung fibrosis…