Search results for "NSU"

showing 10 items of 7753 documents

Evaluating the Utilization of Innovative Electrochemical Methodologies for the Real Wastewater Treatment

2021

microfluidicwastewater treatmentreverse electrodialysisenergy consumptionelectrochemical
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Superconductivity near a magnetic domain wall

2018

We study the equilibrium properties of a ferromagnetic insulator/superconductor structure near a magnetic domain wall. We show how the domain wall size is affected by the superconductivity in such structures. Moreover, we calculate several physical quantities altered due to the magnetic domain wall, such as the spin current density and local density of states, as well as the resulting tunneling conductance into a structure with a magnetic domain wall.

---Materials sciencesuprajohtavuusMagnetic domainFOS: Physical sciencesInsulator (electricity)02 engineering and technologymagnetic fieldsSpin currentmagneettikentätsuperconductors01 natural sciencessuprajohteetSuperconductivity (cond-mat.supr-con)Physics::Fluid DynamicsCondensed Matter::Superconductivity0103 physical sciences010306 general physicsPhysical quantitySuperconductivityTunneling conductanceLocal density of statesta114Condensed matter physicsCondensed Matter - Superconductivitysuperconductivity021001 nanoscience & nanotechnologyFerromagnetism0210 nano-technologyPhysical Review B
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Motivations, engagement and adoption of e-WOM in restaurants.

2022

Resumen El objetivo del presente trabajo fue estudiar el efecto que tienen las motivaciones para consultar y escribir e-WOM sobre el compromiso con el e-WOM y la influencia de dicho compromiso en la adopción del e-WOM consultado. Para analizar estas relaciones, se realizó una investigación empírica aplicada en el contexto de los restaurantes. El ámbito geográfico fue Ecuador, con una muestra de 461 consumidores. Se utilizó un modelo de ecuaciones estructurales y se validó la cadena de relaciones. Los resultados confirmaron las relaciones entre estas variables; además, se presentaron implicaciones académicas interesantes para profundizar en el estudio sobre el compromiso con el e-WOM, así co…

//id.loc.gov/authorities/subjects/sh2001008645 [http]Restaurants//id.loc.gov/authorities/subjects/sh97007573 [http]Strategy and ManagementRestaurantesmotivaciónPublicidad boca a boca//vocabularies.unesco.org/thesaurus/concept1545 [http]PercepcióncompromisoContract lawSocial networksSocial mediaWord-of-mouth advertisingAdvertising//vocabularies.unesco.org/thesaurus/concept6382 [http]Management of Technology and Innovation//vocabularies.unesco.org/thesaurus/concept5657 [http]Servicio alimentarioMotivation (Psychology)Redes socialesMarketingCompromise (Law)//id.loc.gov/authorities/subjects/sh85099708 [http]Food servicesReferidos de negociosConsumer behaviourComercio electrónicoConsumo de alimentosExperienciaConsumo alimenticio//id.loc.gov/authorities/subjects/sh85113249 [http]e-WOMMotivaciónL81 e-Commerce//id.loc.gov/authorities/subjects/sh85029459 [http]engagementCompromisoViral marketingEconomics and EconometricsMedios socialesCompromiso (Derecho)//id.loc.gov/authorities/subjects/sh85087562 [http]Electronic commerceComportamiento del consumidor//vocabularies.unesco.org/thesaurus/concept5324 [http]PublicidadL83 Restaurants//id.loc.gov/authorities/subjects/sh2003011474 [http]motivação//vocabularies.unesco.org/thesaurus/concept1532 [http]Redes de informaciónInformation networksFood consumption//id.loc.gov/authorities/subjects/sh85046433 [http]Business and International ManagementcomprometimentoExperienceMotivación (Psicología)//vocabularies.unesco.org/thesaurus/concept390 [http]MotivationMercadeo viralDerecho de los contratosMotivacionesUNESCO::CIENCIAS ECONÓMICASBusiness referrals//vocabularies.unesco.org/thesaurus/concept17089 [http]Medios de comunicación de masasrestaurantesCommitment//vocabularies.unesco.org/thesaurus/concept15060 [http]PerceptionMotivationsFinance//id.loc.gov/authorities/subjects/sh94006574 [http]Mass media
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¿Cómo afecta la innovación en la satisfacción y la lealtad hacia el establecimiento minorista?

2021

Resumen En el presente estudio, se examinó el concepto de innovación en el sector minorista y se definieron sus relaciones con otras variables, como la satisfacción y la lealtad, tradicionalmente vinculadas con el establecimiento minorista. Para lograr los objetivos planteados, se delimitó un modelo teórico sustentado en la literatura, que se contrastó mediante un estudio empírico utilizando un cuestionario estructurado ad hoc aplicado a una muestra de 510 clientes de establecimientos de alimentación. El análisis de los datos se desarrolló mediante la técnica de regresión por mínimos cuadrados parciales. Los resultados permiten proponer un conjunto de recomendaciones para la gestión, fundam…

//id.loc.gov/authorities/subjects/sh85078691 [http]HF5001-6182Strategy and ManagementSatisfaction//vocabularies.unesco.org/thesaurus/concept1545 [http]//vocabularies.unesco.org/thesaurus/concept4566 [http]LoyaltyConsumer protectionAdvertisingManagement of Technology and InnovationCambio tecnológicosatisfaçãoBusinessInnovación de marketing//vocabularies.unesco.org/thesaurus/concept6424 [http]MarketingLealtadM30 Generalrelational innovationConductainovação de marketinginnovación de marketingInnovaciones tecnológicasmarketing innovationproduct innovationinovação de produtoInnovación en productoTime to market (New products)Viral marketingEconomics and EconometricsConductlealdade//id.loc.gov/authorities/subjects/sh2003011474 [.http]PublicidadSistema de valoresinovação relacional//vocabularies.unesco.org/thesaurus/concept1532 [http]Innovación relacionalinnovación relacionalNormas de conductainnovación en producto//vocabularies.unesco.org/thesaurus/concept403 [http]SatisfacciónMercadeoProtección del consumidorValue systemsBusiness and International ManagementlealtadMercadeo viral//id.loc.gov/authorities/subjects/sh85133143 [http]Technological changeStandards of ConductsatisfacciónTiempo en el mercado (Productos nuevos)//id.loc.gov/authorities/subjects/sh85117681 [http]//id.loc.gov/authorities/subjects/sh94006567 [http]Technological innovationsFinance
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Preparation, Characterisation and Dielectric Properties of YBa2Cu3O7-δ/ Insulator-Heterostructures

1996

YBa 2 Cu 3 O 7-δ /insulator/Au-heterostructures on SrTiO 3 or LaAlO 3 substrates were prepared to study the properties of the materials SrTiO 3 , BaTiO 3 and Ceo 2 . X-ray diffraction measurements in Bragg-Brentano geometry show c-axis-oriented growth for the superconductor and the insulators SrTiO 3 and CeO 2 . Typical values for the rocking curve width of the different insulating films are between 0.4° and 0.8°. The highest breakdown fields are measured for the insulator SrTiO 3 with +37.5 kV/mm and -8.8 kV/mm. The permittivity for CeO 2 is independent of applied field and only weakly temperature dependent. This is in contrast to the perovskite type insulators, where the permittivity depe…

010302 applied physicsDiffractionPermittivitySuperconductivityMaterials scienceCondensed matter physicsGeneral Physics and AstronomyMineralogyHeterojunctionInsulator (electricity)02 engineering and technologyDielectric021001 nanoscience & nanotechnology01 natural sciencesCapacitancechemistry.chemical_compoundchemistry[PHYS.HIST]Physics [physics]/Physics archives0103 physical sciencesStrontium titanate0210 nano-technology
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Topological insulator nanoribbon Josephson junctions: Evidence for size effects in transport properties

2020

We have used Bi$_2$Se$_3$ nanoribbons, grown by catalyst-free Physical Vapor Deposition to fabricate high quality Josephson junctions with Al superconducting electrodes. In our devices we observe a pronounced reduction of the Josephson critical current density $J_c$ by reducing the width of the junction, which in our case corresponds to the width of the nanoribbon. Because the topological surface states extend over the entire circumference of the nanoribbon, the superconducting transport associated to them is carried by modes on both the top and bottom surfaces of the nanoribbon. We show that the $J_c$ reduction as a function of the nanoribbons width can be accounted for by assuming that on…

010302 applied physicsJosephson effectSurface (mathematics)SuperconductivityMaterials scienceSettore FIS/03Condensed matter physicsCondensed Matter - SuperconductivityGeneral Physics and AstronomyFOS: Physical sciences02 engineering and technology021001 nanoscience & nanotechnology01 natural sciencesSuperconductivity (cond-mat.supr-con)Topological insulatorPhysical vapor depositionCondensed Matter::Superconductivity0103 physical sciencesElectrodePhysics::Chemical Physics0210 nano-technologyQuantumSurface states
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Partial discharge of gel insulated high voltage power modules subjected to unconventional voltage waveforms

2016

Performances and duration of the new generation of high voltage power electronic components are dependent on dielectric materials aim to insulating their internal terminals. The presence of defects, some due to faults generated during the manufacturing process, but also due to the internal design of layers and connections, can cause local enhancements of electric field and consequently possible activity of partial discharges phenomena or other effects (aging, tracking) that may result in reduction of device reliability. Furthermore, the usage of unconventional voltage waveforms, like square waves or pulse width modulated waves, additionally increases the electrical aging of the insulation s…

010302 applied physicsMaterials sciencebusiness.industryAcoustics020208 electrical & electronic engineeringElectrical engineeringHigh voltage02 engineering and technologyInsulated-gate bipolar transistor01 natural sciencesSettore ING-IND/31 - ElettrotecnicaReliability (semiconductor)Partial Discharge Gel insulation IGBTvisual_artInsulation systemPower module0103 physical sciencesElectronic componentPartial discharge0202 electrical engineering electronic engineering information engineeringvisual_art.visual_art_mediumbusinessVoltage2016 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)
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Deformation of bubbles in silicon gel insulation under an alternating electric field

2019

The behavior of silicone gel under electrical stress plays a significant role in the reliability and durability of high voltage electronic power devices due to its widespread use for the insulation of IGBT modules and other components. The charges accumulation at the bubble boundaries leads to significant displacements due to the establishment of Coulombic forces and the high deformability of colloidal system. The main purpose of this work is to validate a numerical approach useful to investigate, for a given silicone gel, the non-linear relation between the applied HVDC stress and the electric field over an air bubble within the insulation bulk. The analysis has been carried out by means o…

010302 applied physicsMaterials scienceinsulationreliabilityDeformation (mechanics)020209 energyBubbleHigh voltage02 engineering and technologyDielectric01 natural sciencesSpace chargeIGBTSilicone gelStress (mechanics)chemistry.chemical_compoundpartial dischargeSettore ING-IND/31 - ElettrotecnicaSiliconechemistryElectric field0103 physical sciences0202 electrical engineering electronic engineering information engineeringComposite material
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Critical issues in the PD testing methodology for XLPE-insulated MV cables: An experimental case

2017

This paper describes some critical issues arising during the partial discharge (PD) testing of a 500m delivery length of an XLPE-insulated MV cable. At first, conventional PD measurements were performed on the whole length by using a standard acquisition system; PDs activity was detected, but the system allowed the operator to localize the PDs only on a length of 70 m. A visual inspection of this section highlighted the presence of an excoriation in the outer sheet. Aiming at a more accurate pin-pointing of the defect, more measurements were carried out in the proximity of the outer defect using a portable PD detection system. These measurements showed PDs activity, whose source was located…

010302 applied physicsOperator (computer programming)Cables Cable testing MV cables Partial Discharges Partial Discharge Measurements Partial Discharge testing PD detection Wireless PD detection XLPE-insulated cablesSection (archaeology)Computer scienceAcoustics0103 physical sciencesExcoriationPartial discharge01 natural sciences2017 IEEE Conference on Electrical Insulation and Dielectric Phenomenon (CEIDP)
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An Energy Saving Mechanism Based on Vacation Queuing Theory in Data Center Networks

2018

To satisfy the growing need for computing resources, data centers consume a huge amount of power which raises serious concerns regarding the scale of the energy consumption and wastage. One of the important reasons for such energy wastage relates to the redundancies. Redundancies are defined as the backup routing paths and unneeded active ports implemented for the sake of load balancing and fault tolerance. The energy loss may also be caused by the random nature of incoming packets forcing nodes to stay powered on all the times to await for incoming tasks. This paper proposes a re-architecturing of network devices to address energy wastage issue by consolidating the traffic arriving from di…

010302 applied physicsQueueing theorybusiness.industryComputer scienceNetwork packet020206 networking & telecommunicationsFault tolerance02 engineering and technologyEnergy consumptionData center networksLoad balancing (computing)01 natural sciencesNetworking hardwareBackupPower consumption0103 physical sciencesVacation queuing theory0202 electrical engineering electronic engineering information engineeringData centerbusinessComputer network
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