Search results for " Rene"

showing 10 items of 263 documents

Wind turbines to power telecommunication Systems: A case study in Sicily

2011

La cultura ci salverà? Processi di touristification a base culturale nel centro storico di Palermo

2023

Negli ultimi tre decenni la cultura ha avuto un ruolo chiave nella costruzione delle politiche urbane, divenendo uno strumento decisivo nella definizione delle strategie di sviluppo economico e nell’accesso alla competizione globale che caratterizzano l’attuale regime di neoliberismo urbano (Miles e Paddison 2005). Anche nel sud Europa la cosiddetta rigenerazione a base culturale ha rappresentato e continua ancora oggi a rappresentare una vera e propria ortodossia urbana, che trova nel turismo tanto una ragione di esistenza quanto un campo di attuazione. In particolare, negli ultimi anni i centri storici di molte città sudeuropee sono stati oggetto di trasformazioni profonde in cui pratiche…

Within this framework Palermo and its historic center are no exception. The epicenter of these processes is represented here by the Kalsa district which since the early 2000s has been placed at the center of a precise strategy of culturally-based renewal called to drive the city's tourist renaissance (Vinci 2008). The culmination of this path came in 2018 when Palermo was named the Italian capital of culture and chosen as the venue for Manifesta one of the most prestigious traveling biennales of contemporary art. However the exponential increase in tourist arrivals in the last three years came to a halt with the outbreak of the pandemic which showed with unprecedented evidence the contradictions of the development strategies pursued in the historic center and the marks they leave on the territories. While this sudden interruption seems to offer an opportunity to radically rethink urban and cultural policies and find new curbs to the conditions of overtourism in which the historic centers of South European cities and beyond find themselves it could also prove to be an accelerator of the dynamics of commodification of these spaces representing the revival of tourism an easy escape route in times of crisis. The objective of this contribution is to critically explore the urban and social transformations that have crossed the Kalsa district of Palermo from the 2000s to the present using qualitative and quantitative techniques (analysis of statistical data in-depth interviews critical discourse analysis ...) with particular reference to the role that culture has played in these processes. While it is impossible to prefigure post-pandemic scenarios we will examine documents and discourses that trace possible development directions for South European cities and their historic centers.Settore ICAR/21 - UrbanisticaSettore M-GGR/01 - Geografia

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Statistics of transitions for Markov chains with periodic forcing

2013

The influence of a time-periodic forcing on stochastic processes can essentially be emphasized in the large time behaviour of their paths. The statistics of transition in a simple Markov chain model permits to quantify this influence. In particular the first Floquet multiplier of the associated generating function can be explicitly computed and related to the equilibrium probability measure of an associated process in higher dimension. An application to the stochastic resonance is presented.

[MATH.MATH-PR] Mathematics [math]/Probability [math.PR]Markov chain mixing timeMarkov kernelMarkov chainProbability (math.PR)Markov chainlarge time asymptoticStochastic matrixcentral limit theoremMarkov process[MATH.MATH-PR]Mathematics [math]/Probability [math.PR]symbols.namesakeMarkov renewal processModeling and SimulationFloquet multipliersStatisticsFOS: MathematicssymbolsMarkov propertyExamples of Markov chainsstochastic resonance60J27 60F05 34C25[ MATH.MATH-PR ] Mathematics [math]/Probability [math.PR]Mathematics - ProbabilityMathematics

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LCA applied to an anaerobic digestion plant for biomethane and digestate production

2019

Nowadays it is paramount to promote bioenergy for climate protection, energy security and creation of income/jobs. In this perspective, Anaerobic Digestion (AD) for biogas and digestate production seems to be a viable way to simultaneously improve waste management while producing Renewable Energy Sources (RES). The main objective of this work is to assess the environmental impact associated with biomethane and digestate production from an AD plant as Global Warming Potential, expressed in CO2 equivalents. Therefore, a LCA was carried out for the production of biomethane ready for the injection into the Italian distribution natural gas grid. A mix from different waste sources (cattle manure …

bioenergy biogas environmental impact natural gas Renewable Energy Sources (RES)Settore AGR/09 - Meccanica Agraria

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Development of a High Granularity Photovoltaic Model That Considers Complex Nonuniform Shadow Conditions and Different Cell Temperatures

2012

In this paper is the development of a high granularity photovoltaic model that considers complex nonuniform shadow conditions and different cell temperatures. The model integrates the nonuniform shading characteristics such as different areas for each cell, different direct and indirect solar irradiations for each cell, and different temperatures. The area of the shadow on the PV module is found using image processing. The bond graph formalism facilitates the representation of the energy exchange between the different parts of the PV module. This complexity justifies the effort to develop a high-granularity tool. The proposed model is validated through experimental tests under shading condi…

business.industryComputer sciencePhotovoltaic systemImage processingMaximum power point trackingRenewable energyComputational scienceSettore ING-INF/04 - AutomaticaShadowGranularitybusinessRepresentation (mathematics)Bond graphHigh granularity photovoltaic model solar cells renewable energies

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Economical Incentives and Systems of Certification for the Production of Electrical Energy from Renewable Energy Resources

2007

In order to succeed in observing the international agreements undertaken in the Kyoto agreement protocol, today it is necessary to increase the electrical energy production from renewables energy resources (RERs). In this paper a complete description of the Italian incentive systems for the production of electrical energy from photovoltaic (PV) and other RERs is done. Moreover, some considerations about the effects of the incentive actions on the wide spread of RERs to produce electrical energy are reported; particular attention is paid in the economical analysis related to PY and wind systems.

business.industryElectric potential energyEnvironmental resource managementPhotovoltaic systemCertificationEnvironmental economicsSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciRenewable energyEconomical analysis renewable energy resourcesSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaIncentiveOrder (exchange)Production (economics)Kyoto ProtocolBusiness

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Impact of non-programmable renewable sources in Day-Ahead Market in Sicily. Reasons to make more flexible and smarter the national transmission grid.

2014

This article describes technical and market aspects that characterize the Sicilian electrical system, the non-programmable renewable sources impacts on the energy markets (Day-Ahead Market and ancillary services market) and on Sicilian system operation, to evaluate the grid integration of renewable energy sources in a future Sicilian smart grid.

business.industryEnvironmental economicsGridlanguage.human_languageRenewable energySettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaElectric power systemRenewable energy creditSmart gridCommercezonal price.Intermittent energy sourcelanguageEconomicsnon-programmable renewable sourceDay-Ahead Marketrenewable energy sourceFeed-in tariffbusinesssmart gridSicilian

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Life Cycle Assessment of repurposed electric vehicle batteries: an adapted method based on modelling energy flows

2018

Abstract After their first use in electric vehicles (EVs), the residual capacity of traction batteries can make them valuable in other applications. Although reusing EV batteries remains an undeveloped market, second-use applications of EV batteries are in line with circular economy principles and the waste management hierarchy. Although substantial environmental benefits are expected from reusing traction batteries, further efforts are needed in data collection, modelling the life-cycle stages and calculating impact indicators to propose a harmonized and adapted life-cycle assessment (LCA) method. To properly assess the environmental benefits and drawbacks of using repurposed EV batteries …

business.product_categoryComputer science020209 energyEnergy Engineering and Power TechnologyReuse02 engineering and technology010501 environmental sciencesReuseBattery second-use; Electric Vehicles (EVs); Environmental impact; Life Cycle Assessment (LCA); Repurposing; Reuse; Renewable Energy Sustainability and the Environment; Energy Engineering and Power Technology; Electrical and Electronic Engineering01 natural sciencesEnvironmental impactElectric vehicle0202 electrical engineering electronic engineering information engineeringBattery second-useEnvironmental impact assessmentRenewable EnergyElectrical and Electronic EngineeringLife-cycle assessmentRepurposing0105 earth and related environmental sciencesData collectionSettore ING-IND/11 - Fisica Tecnica AmbientaleSustainability and the EnvironmentRenewable Energy Sustainability and the EnvironmentCircular economyPhotovoltaic systemLife Cycle Assessment (LCA)Reliability engineeringEnvironmental impactLife Cycle Assessment (LCA)Battery second-useReuseRepurposingElectric Vehicles (EVs)businessRepurposingElectric Vehicles (EVs)

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Microbial Fuel Cell with Ni–Co Cathode Powered with Yeast Wastewater

2018

Wastewater originating from the yeast industry is characterized by high concentration of pollutants that need to be reduced before the sludge can be applied, for instance, for fertilization of croplands. As a result of the special requirements associated with the characteristics of this production, huge amounts of wastewater are generated. A microbial fuel cell (MFC) forms a device that can apply wastewater as a fuel. MFC is capable of performing two functions at the same time: wastewater treatment and electricity production. The function of MFC is the production of electricity during bacterial digestion (wastewater treatment). This paper analyzes the possibility of applying yeast wastewate…

cathodeControl and OptimizationMicrobial fuel cellyeast wastewaterEnergy Engineering and Power TechnologySewage02 engineering and technology010501 environmental scienceslcsh:Technology01 natural sciencesmicrobial fuel cell; yeast wastewater; environmental engineering; renewable energy source; cathode; Ni–Co alloyIndustrial wastewater treatmentmicrobial fuel cellElectrical and Electronic EngineeringEngineering (miscellaneous)0105 earth and related environmental sciencesenvironmental engineeringlcsh:TRenewable Energy Sustainability and the Environmentbusiness.industryChemical oxygen demand021001 nanoscience & nanotechnologyPulp and paper industryWaste treatmentWastewaterEnvironmental scienceSewage treatmentNi–Co alloyrenewable energy source0210 nano-technologyEnergy sourcebusinessEnergy (miscellaneous)Energies

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Wastewater treatment and electricity production in a microbial fuel cell with Cu–B alloy as the cathode

2019

The possibility of wastewater treatment and electricity production using a microbial fuel cell with Cu&ndash

cathodenon-precious metal catalysts; Cu–B alloy; microbial fuel cell; cathode; environmental engineering; oxygen electrode; renewable energy sourcesMicrobial fuel cellMaterials science02 engineering and technology010501 environmental scienceslcsh:Chemical technology01 natural sciencesCatalysislaw.inventionCatalysislcsh:Chemistrymicrobial fuel celllawCu–B alloylcsh:TP1-1185Physical and Theoretical Chemistryrenewable energy sources0105 earth and related environmental sciencesenvironmental engineeringChemical oxygen demand021001 nanoscience & nanotechnologyCathodeAnodeElectricity generationChemical engineeringnon-precious metal catalystslcsh:QD1-999oxygen electrodeSewage treatmentAeration0210 nano-technologyCatalysts

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