Search results for "efficiency"

showing 10 items of 1430 documents

Impact Evaluation of Innovative Selective Harmonic Mitigation Algorithm for Cascaded H-Bridge Inverter on IPMSM Drive Application

2021

This paper presents a detailed analysis of the use of a novel Harmonic Mitigation algorithm for Cascaded H-Bridge Multilevel Inverter in electrical drives for the transportation field. For this purpose, an enhanced mathematical model of Interior Permanent Magnet Synchronous Motor (IPMSM), that takes into account simultaneously saturation, cross-coupling, spatial harmonics, and iron loss effects, has been used. In detail, this model allows estimating accurately the efficiency and the torque ripple of the IPMSM, crucial parameters for transportation applications. Moreover, two traditional pulse width modulation strategies, Sinusoidal Phase-Shifted and Switching Frequency Optimal Phase-Shifted…

selective harmonic mitigation algorithmComputer scienceImpact evaluationHarmonic mitigationSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciCascaded H-bridge multilevel inverter (CHBMI)torque rippleH bridge inverterTK1-9971Settore ING-IND/31 - ElettrotecnicaefficiencyElectronic engineeringCascaded H-bridge multilevel inverter (CHBMI) efficiency interior permanent magnet synchronous machine (IPMSM) selective harmonic mitigation algorithm torque rippleElectrical engineering. Electronics. Nuclear engineeringinterior permanent magnet synchronous machine (IPMSM)IEEE Open Journal of Industry Applications
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Politiche e regole per la sharing mobility

2020

INDICE GUIDO SMORTO Quali regole per la sharing mobility in Europa. Un’introduzione ........................................................... 7-15 GUIDO SMORTO Verso una disciplina giuridica della sharing mobility nell’Unione europea ........................................... 17-41 EDOARDO CARUSO Trasporto pubblico locale non di linea e mobilità condivisa tra continuità e discontinuità regolativa ....... 43-79 ROSSANA DUCATO Scritto nelle stelle. Un’analisi giuridica dei sistemi di rating nella piattaforma Uber alla luce della normativa sulla protezione dei dati personali ................................................................... 81-105 ANDRÉS BOIX PALOP Le sfide per la regolame…

sharing mobility sustainability efficiency social inclusion urban planningSettore IUS/02 - Diritto Privato Comparato
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Smart Cities and Eu growth strategy: a Comparison among European Cities

2015

The level of interest in smart cities has been growing during these last years. The academic literature (Holland, 2008; Caragliu et al., 2009, Nijkamp et al., 2011 and Lombardi et al., 2012) has identified a number of factors that characterise a city as smart, such as economic development, business-friendly, environmental sustainability, social innovation, information and knowledge process, and human and social capital. Thus, the smartness concept is strictly linked to urban efficiency in a multifaceted way as well as to citizens’ wellbeing through the use of appropriate technologies. Instead, from a “political perspective” smartness is mainly related to the ability of using ICT (Informatio…

smart cities stochastic frontier technical inefficiency
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Extraordinary Performance of Carbon‐Coated Anatase TiO 2 as Sodium‐Ion Anode

2015

The synthesis of in situ polymer‐functionalized anatase TiO2 particles using an anchoring block copolymer with hydroxamate as coordinating species is reported, which yields nanoparticles (≈11 nm) in multigram scale. Thermal annealing converts the polymer brushes into a uniform and homogeneous carbon coating as proven by high resolution transmission electron microscopy and Raman spectroscopy. The strong impact of particle size as well as carbon coating on the electrochemical performance of anatase TiO2 is demonstrated. Downsizing the particles leads to higher reversible uptake/release of sodium cations per formula unit TiO2 (e.g., 0.72 eq. Na+ (11 nm) vs only 0.56 eq. Na+ (40 nm)) while the …

sodium‐ion batteriesAnataseMaterials scienceInorganic chemistryNanoparticle02 engineering and technology010402 general chemistryElectrochemistry7. Clean energy01 natural sciencessymbols.namesakeGeneral Materials ScienceHigh-resolution transmission electron microscopyRAFT polymerizationFull PaperRenewable Energy Sustainability and the EnvironmentFull Papers021001 nanoscience & nanotechnology0104 chemical sciencesAnodeanatase TiO2carbon coatingChemical engineeringsymbolsnanoparticlesParticle size0210 nano-technologyRaman spectroscopyFaraday efficiencyAdvanced Energy Materials
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Cooperative spectrum sensing schemes for future dynamic spectrum access infrastructures

2016

spectrum sensingtehokkuusdecision/data fusioncooperative communicationsdynamic spectrum access (DSA)matemaattinen optimointitiedonsiirtononlinear optimizationlangaton tiedonsiirtoradioverkotoptimointiefficiencycognitive radio (CR)taajuusalueetkognitiivinen radiolangattomat verkot
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Edukacja językowa w zakresie języka ojczystego w czasach zmiany kulturowej

2018

Przemiany dokonujące się we współczesnej kulturze dotykają różnych sfer życia człowieka, również języka i komunikacji, skłaniając do przemyślenia zadań i priorytetów szkolnego kształcenia językowego. Szczególna uwaga należy się tym wzorcom językowego komunikowania nabywanym przez uczniów w procesie socjalizacji, które odbiegają od ideałów szkolnych. W artykule omawiam niektóre z nich, zwracam uwagę na konsekwencje w postaci niepożądanych zmian w strukturze kompetencji językowo-komunikacyjnej młodego pokolenia oraz postaw wobec języka i komunikacji werbalnej. Dochodzę do wniosku, że przeobrażenia w kontekście kulturowo-komunikacyjnym nie stawiają przed współczesną edukacją językową całkiem n…

speech culturekontekst kulturowo-komunikacyjnylinguistic efficiencycultural and communicative contextsprawność językowakultura wypowiedzikształcenie językowelinguistic instruction
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Postępy w fotowoltanice w Polsce i na świecie = Progress in photovoltaics in Poland and the world

2015

W artykule przedstawiono postęp w zakresie uzyskiwanych sprawności przez ogniwa i moduły fotowoltaiczne (PV) wykonane z różnych materiałów i za pomocą różnych technologii. Zawarto w nim szczegółowe zestawienia tabelaryczne sprawności oraz ich parametrów technicznych. Zwrócono uwagę na nowe obiecujące technologie, które jeszcze nie mają rekordowych sprawności, ale z uwagi na proces ich wytwarzania rokują nadzieje na uzyskanie bardzo dużych sprawności albo tanich wielkopowierzchniowych modułów do komercyjnego zastosowania. Ponadto, omówiono ekonomiczne skutki wdrożenia nowo zawartych zapisów w uchwalonej w lutym 2015 r. Ustawie o Odnawialnych Źródłach Energii (OZE) dla rozwoju rozproszonych i…

sprawność ogniwthe efficiency of PV cells and modulesmoduły słonecznesolar cells and modulesthe law on renewable energy sourcessprawność modułów PVogniwa słoneczneUstawa o Odnawialnych Źródłach EnergiiProceedings of ECOpole
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Production and Efficiency in 21 Industrialized Countries from 1966 to 2007 to Analyse the Italy’s Decline: Application of a Stochastic Frontier Model…

2008

This paper uses a stochastic frontier production model to estimate the technical efficiency of 21 nations among the more industrialized countries in the world for the wide period from 1966 to 2007. A Cobb-Douglas with labour and capital as inputs, GDP as output and efficiency with exponential distribution appears to work good from a statistical point of view. This model is used to estimate in a bayesian approach the efficiency score of these 21 countries. The bayesian way, applied via Gibbs sampling, is here useful to avoid problems about the small number of observations. So, each efficiency score is obtained as mean of 10,000 draws. The results underline a general and progressive efficienc…

stochastic frontierbayesian approachefficiencytechnical efficiency bayesian stochastic frontier Italy's declineitalian decline
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Straw as a contemporary biomaterial: energetic efficiency and enviromental sustanaibility

2016

Questo studio ha lo scopo di segnalare ricerche e applicazioni in ambito costruttivo europeo e non solo della paglia, con particolare attenzione all'efficienza energetica e al comfort abitativo. Il riciclo e riutilizzo dei materiali naturali sono gli obiettivi principali nella scelta di paglia come materiale da costruzione, consentendo di adottare un approccio metodologico complessivo, che potrebbe prendere in considerazione l'intero edificio del ciclo di vita. Partendo dalla storia dell'utilizzo di paglia nella costruzione edilizia, saranno riportati molti esempi di edifici che utilizzano tale materiale all'interno del loro involucro e struttura. Le caratteristiche principali della paglia …

strawefficienza energeticasostenibilità ambientaleSettore ICAR/10 - Architettura Tecnicatraditional materialpagliaenvironmental sustainabilityenergy efficiencymateriali tradizionali
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Pyöräilyn hyötysuhteiden yhteyksiä

2017

Pyöräilytyössä hyötysuhdetta (ulkoisen polkemistyön suhdetta kokonaisenergiankulutukseen)on helppo tutkia ja tällaiseen metaboliseen tehokkuuteen onkin määritelty monia erilaisia mittareita. Fysiologisten ja biomekaanisten muuttujien vaikutuksia näihin eri tavoin määritettyihin hyötysuhteisiin tunnetaan hyvinkin, mutta tätä ennen ei olla juurikaan tutkittu mitkä ovat eri tavoin määriteltyjen hyötysuhteiden keskinäiset suhteet. Tutkimukseen osallistui 14 perustervettä fyysisesti aktiivista 31 ± 6 vuotiasta mies- (n = 12)ja naistutkittavaa (n = 2). Tutkittaville laskettiin kuusi erilaista metabolisen tehokkuuden arvoa: vakioteholla (150 W) kokonais- ja nettohyötysuhde, kaksi työhyötysuhdetta …

suorituskykycyclingefficiencyenergy consumptionhyötysuhdemetaboliametabolismpyöräilyenergiankulutus (aineenvaihdunta)
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