Search results for "wind"

showing 10 items of 846 documents

Wykorzystanie energii wiatru występującego w warstwie przygruntowej oraz architektonicznej

2016

W pracy przedstawiono wyniki analiz możliwości wykorzystania energii wiatru za pomocą mikro turbin wiatrowych. Przeanalizowano możliwość wykorzystania energii wiatru występującego w warstwie przygruntowej oraz architektonicznej. Zaproponowano zastosowanie układu mikroelektrowni wiatrowej o mocy 2 kW na potrzeby pojedynczego gospodarstwa domowego.Określono opłacalność zastosowania tego typu mikroelektrowni w warunkach wietrzności panujących w Opolu.

energia wiatruenergetic efficiencywind turbin esurface layermicro power plantarchitectural layerodnawialne ź ródła energiiturbina wiatrowamikroelektrowniawarstwa architektonicznawind energyrenewable energy sourcesefektywność energetycznawarstwa przygruntowa
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Usability in ERP (Single and Multiple Document Interface) Application Environments

2014

The usability of complex information systems, like enterprise resource planning (ERP), is the next frontier, as the trend becomes more and more adopted in the industrial working environment. In complex information systems, the traditional usability criteria of learnability, effectiveness and efficiency have never lost their importance, even though the focus of research appears to have shifted for the consumer product. This study based on 110 responses attempt to highlight the usability issues in ERP single document interface (SDI) and multiple document interface (MDI) application environments. It also investigates the effect of negative user experience, such as ‘confusion’, on learnability,…

enterprise resource planningMultiple Document Interface (MDI) WindowlearnabilitykäytettävyysefficiencytuloksellisuusSingle Document Interface (SDI) Window
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Rendita catastale e “rendita solare” degli impianti di produzione elettrica a fonti rinnovabili: perequazione fiscale energetico-immobiliare

2014

Fra i temi affrontati dalla legge 11 marzo 2011, n. 23, recante delega al governo per un sistema fiscale più equo, spiccano le questioni fondamentali della riforma catastale e della fiscalità energetico-ambientale, di cui si tratta nel presente studio. La nuova riforma del catasto dei fabbricati aspira a realizzare un sistema fiscale più perequato at-traverso la rimozione della disparità fra redditi (e valori) catastali e redditi (e valori) osservabili nei mercati immobiliari. Il tema catastale è rilevante per i molteplici effetti fiscali che ne derivano, e il divario esistente fra i valori di mercato e quelli catastali, hanno suscitato un grande interesse degli studiosi di estimo, stimolan…

equity of taxationimpianti fotovoltaici ed eolicien-ergy taxationfiscalità energeticaphotovoltaic and wind power installations.rendita catastaleSettore ICAR/22 - Estimorendita solarecadastral incomecatasto delle rendite solari.Key words: solar cadastresolar incomeParole chiave: equità fiscale
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Społeczna percepcja energetyki wiatrowej na przykładzie farmy wiatrowej Kuniów

2017

Przeprowadzono badania ankietowe wśród mieszkańców wsi Kuniów w południowo-zachodniej Polsce, dotyczące pozytywnych i negatywnych aspektów budowy oraz funkcjonowania farmy wiatrowej. Ocenie poddano farmę 2 elektrowni wiatrowych o mocy 2 MW każda, z wysokością wież 110 m, długością rotorów 45 m i odległością od zabudowy 620 i 1300 m. W ocenie ankietowanych głównymi pozytywnymi aspektami rozwoju energetyki wiatrowej są: czysta energia, tania energia oraz zwiększenie możliwości rozwoju gminy i wsi z podatków. Największe zagrożenia obejmują: degradację krajobrazu, zabijanie ptaków i nietoperzy, utratę siedlisk zwierząt, hałas, infradźwięki oraz wibracje. Postrzeganie energetyki wiatrowej po wyb…

farma wiatrowaenergetyka wiatrowapercepcja społecznawind farmsocial perceptionwind powerProceedings of ECOpole
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Badanie społecznej percepcji krajobrazu jako podstawa oceny predyspozycji przestrzeni geograficznej do lokalizacji form wiatrowych

2014

farma wiatrowaochrona krajobrazulandscape percepctionwind farmpercepcja krajobrazulandscape protectionPrace Komisji Krajobrazu Kulturowego PTG = Cultural Landscape. Krajobraz Kulturowy
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Propozycja wskaźnika oceny siły wizualnego oddziaływania farm wiatrowych

2016

farma wiatrowawind farmvisual influenceevaluation indexwskaźnik ocenyoddziaływanie wizualnePrace Komisji Krajobrazu Kulturowego PTG = Cultural Landscape. Krajobraz Kulturowy
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Elektrownie wiatrowe jako źródła konfliktów w krajobrazie

2014

farmy wiatrowewind farmskonflikty przestrzennespatial conflicts
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Persistence in complex systems

2022

Persistence is an important characteristic of many complex systems in nature, related to how long the system remains at a certain state before changing to a different one. The study of complex systems' persistence involves different definitions and uses different techniques, depending on whether short-term or long-term persistence is considered. In this paper we discuss the most important definitions, concepts, methods, literature and latest results on persistence in complex systems. Firstly, the most used definitions of persistence in short-term and long-term cases are presented. The most relevant methods to characterize persistence are then discussed in both cases. A complete literature r…

fractal dimensionFOS: Computer and information sciencesComplex systemsRenewable energyglobal solar-radiationsystems' statesComplex networksGeneral Physics and AstronomyFOS: Physical scienceslong-term and short-term methodsadaptationzero-temperature dynamicsDynamical Systems (math.DS)Physics - GeophysicsneurosciencememoryMethodology (stat.ME)PersistenceOptimization and planningMemoryMachine learningearthquake magnitude seriesFOS: MathematicsAtmosphere and climateMathematics - Dynamical SystemsAdaptationcomplex systemslow-visibility eventstime-seriesStatistics - Methodologyinflation persistenceLong-term and short-term methodsdetrended fluctuation analysislong-range correlationspersistencecomplex networksSystems’ statesEconomyneural networksrenewable energyGeophysics (physics.geo-ph)atmosphere and climateeconomymachine learningoptimization and planningNeural networkswind-speedNeuroscience
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Bearing fault detection based on time-frequency representations of vibration signals

2015

To prevent failures of a rolling bearing in the gearbox drive system, acceleration sensors are used to detect fault-related signals of the bearing. It is a big challenge to observe and identify signals caused by bearing defects in the time domain or the frequency spectrum by a conventional Fourier analysis. The time-frequency representation of the fault-related signals implemented by the windowed Fourier transform is studied in this work. It is shown that the fault characteristic frequencies can be clearly identified in the time-frequency spectrum if a fault occurs in the bearing of the gearbox at different speeds. Otherwise, the shaft frequency and its multiples are the main harmonics in t…

gearbox drive trainEngineeringaccelerometersBearing (mechanical)business.industryMechanical EngineeringAcousticswindowed Fourier transformEnergy Engineering and Power Technologyaccelerometers; bearing faults; gearbox drive train; windowed Fourier transform; Energy Engineering and Power Technology; Electrical and Electronic Engineering; Mechanical EngineeringFault (power engineering)Fault detection and isolationlaw.inventionTime–frequency analysisVibrationsymbols.namesakeFourier transformFourier analysislawsymbolsElectronic engineeringbearing faultsTime domainElectrical and Electronic Engineeringbusiness2015 18th International Conference on Electrical Machines and Systems (ICEMS)
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Wind gustiness and sulphur dioxide concentration in the urban area of Barcelona, Spain

1991

Abstract Data on aerosols and wind parameters recorded at the Barcelona Meteorological Observatory were analysed to determine their relation to wind gustiness, defined according to the criteria used at Brookhaven National Laboratory. The relation between wind gustiness and wind speed and direction was analysed, together with the annual and monthly variation. The relation between the concentration of sulphur dioxide and wind gustiness was also investigated, and proved to be a very useful indicator in this kind of analysis, especially in local studies.

geographyEnvironmental Engineeringgeography.geographical_feature_categoryMeteorologyMeteorological observatoryEnvironmental ChemistryEnvironmental scienceNational laboratoryUrban areaPollutionWaste Management and DisposalWind speedScience of The Total Environment
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