Search results for "conducta"

showing 10 items of 611 documents

Projecte d'investigació-acció: Violència escolar i integració social

2006

En aquest treball es presenta el Projecte d'Investigació-Acció realitzat pel grup Lisis de la Universitat de València. Des del model ecològic, l'interès està a analitzar i prevenir la conducta violenta entre iguals a l'escola. Per a això s'ha aplicat en una mostra de 1319 adolescents d'edats compreses entre els 11 i els 16 anys una bateria d'instruments. En aquest article s'exposa, a tall d'exemple, un dels models d'equacions estructurals calculats en aquesta investigació. En concret s'analitza l'efecte directe i l'indirecte del clima familiar en la conducta violenta entre iguals i en el context escolar.

:PSICOLOGÍA [UNESCO]UNESCO::PSICOLOGÍAGrup Lisis (Universitat de València) violència escolar model ecològic model d'equacions estructurals clima familiar conducta violenta entre iguals adolescents context escolar. Lisis Group (University of Valencia) school violence ecological model structural equation model family environment violent behaviour among adolescents peers school environment. Artículo
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<title>Low-frequency excitation of double quantum dots</title>

2008

We address theoretically adiabatic regime of charge transport for a model of two tunnel-coupled quantum dots connected in series. The energy levels of the two dots are harmonically modulated by an external potential with a constant phase shift between the two. Motivated by recent experiments with surface-acoustic-wave excitation, we consider two situations: (a) pure pumping in the absence of external voltage (also at finite temperature), and (b) adiabatic modulation of the current driven by large external bias. In both cases we derive results consistent with published experimental data. For the case (b) we explicitly derive the adiabatic limit of Tien-Gordon formula for photon-assisted tunn…

PhysicsQuantum dotQuantum mechanicsConductanceLow frequencyDouble quantumAdiabatic processExcitationQuantum tunnellingVoltageSPIE Proceedings
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Low intrinsic carrier density LSMO/Alq3/AlOx/Co organic spintronic devices

2018

The understanding of spin injection and transport in organic spintronic devices is still incomplete, with some experiments showing magnetoresistance and others not detecting it. We have investigated the transport properties of a large number of tris-(8-hydroxyquinoline)aluminum-based organic spintronic devices with an electrical resistance greater than 5 MΩ that did not show magnetoresistance. Their transport properties could be described satisfactorily by known models for organic semiconductors. At high voltages (>2 V), the results followed the model of space charge limited current with a Poole-Frenkel mobility. At low voltages (∼0.1 V), that are those at which t…

Materials sciencePhysics and Astronomy (miscellaneous)MagnetoresistanceSpintronicsCondensed matter physicsVALVESSpin valve02 engineering and technology021001 nanoscience & nanotechnology01 natural sciencesSpace chargePoole–Frenkel effectTRANSPORTOrganic semiconductorINTERFACESPIN INJECTIONElectrical resistance and conductanceElectrical resistivity and conductivity0103 physical sciencesMAGNETORESISTANCEHETEROJUNCTIONfilms010306 general physics0210 nano-technologyTEMPERATURE
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Evaluación del riesgo de reincidencia en menores infractores: herramientas para la mejora de estrategias reeducativas en España

2016

El presente estudio trata de conocer las herramientas que actualmente se utilizan en el ámbito judicial en menores para evaluar el riesgo de reincidencia en España. Para abordar el trabajo se ha realizado una revisión de la literatura existente y se ha llevado a cabo un análisis comparativo de los instrumentos con mayor ascendencia, que permiten identificar dicho riesgo. Tras el análisis, y desde la perspectiva del Trabajo Social, se destaca la herramienta SAVRY puesto que es una herramienta que abarca una gran cantidad de factores y permite el desarrollo de actuaciones efectivas potenciando conductas prosociales que reduzcan el riesgo de de- lincuencia futura. El conocimiento de estas herr…

ReincidenciaConducta antisocialTreball social amb els jovesDelincuencia reincidencia menores infractores riesgo conducta antisocial Trabajo Social.DelincuenciaTrabajo socialMenores infractoresDelinqüència juvenil36MenorsRiesgo
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Growth and water relations of field-grown ‘Valencia’ orange trees under long-term partial rootzone drying

2017

Climate, soil water potential (SWP), leaf relative water content (RWC), stem water potential (WPstem), stomatal conductance (g s), trunk, shoot and fruit growth of ‘Valencia’ orange trees were monitored during five consecutive seasons (2007–2012) to study water status and growth responses to irrigation placement or volume. 48 adult trees were exposed to conventional irrigation (CI, 100% of crop evapotranspiration on both sides of the rootzone), partial rootzone drying (PRD, 50% of CI water only on one alternated side of the rootzone) and continuous deficit irrigation (DI, 50% of CI water on both sides of the rootzone). Reducing irrigation volumes by 55% (DI) over CI increased leaf water def…

0106 biological sciencesStomatal conductanceIrrigationDeficit irrigationfood and beveragesSoil Science04 agricultural and veterinary sciencesOrange (colour)Biology01 natural sciencesSettore AGR/03 - Arboricoltura Generale E Coltivazioni ArboreeHorticultureWater potentialShootBotany040103 agronomy & agriculture0401 agriculture forestry and fisheriesAgronomy and Crop ScienceWater content010606 plant biology & botanyWater Science and TechnologyTranspirationIrrigation Science
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An overview on chemical structures as ΔF508-CFTR correctors

2019

Deletion of phenylalanine at position 508 (F508del) in the CFTR protein, is the most common mutation causing cystic fibrosis (CF). F508del causes misfolding and rapid degradation of CFTR protein a defect that can be targeted with pharmacological agents termed “correctors”. Correctors belong to various chemical classes but are generally small molecules based on nitrogen sulfur or oxygen heterocycles. The mechanism of action of correctors is generally unknown but there is experimental evidence that some of them can directly act on mutant CFTR improving folding and stability. Here we overview the characteristics of the various F508del correctors described so far to obtain indications on key ch…

Protein FoldingCystic FibrosisCFTR correctorMutantCystic Fibrosis Transmembrane Conductance RegulatorPyrimidinonesmedicine.disease_cause01 natural sciencesF508del-CFTR03 medical and health sciencesMutant proteinDrug DiscoverymedicineAnimalsHumansCFTR030304 developmental biologyPharmacology0303 health sciencesMutationCFTR correctorsbiology010405 organic chemistryChemistryOrganic ChemistryCFTR; CFTR correctors; Cystic fibrosis; Cystic fibrosis transmembrane conductance regulator; F508del-CFTR; Animals; Cystic Fibrosis; Cystic Fibrosis Transmembrane Conductance Regulator; Humans; Mutation; Protein Folding; Pyrimidinones; ThiazolesGeneral MedicineSettore CHIM/08 - Chimica FarmaceuticaSmall moleculeCystic fibrosis transmembrane conductance regulator0104 chemical sciencesCell biologyThiazolesMechanism of actionCystic fibrosiMutationbiology.proteinmedicine.symptomProtein Aδf508 cftrEuropean Journal of Medicinal Chemistry
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Modelos animales de adicción a las drogas

2017

El desarrollo de modelos animales de refuerzo y adicción a las drogas es imprescindible para el avance en el conocimiento de las bases biológicas de este trastorno y la identificación de nuevas dianas terapéuticas. En función del componente del refuerzo que deseemos estudiar podemos servirnos de un tipo de modelos animales u otros. Podemos utilizar modelos de refuerzo basados en el efecto hedónico primario que produce el consumo de la sustancia adictiva, como los modelos de autoadministración (AA) y autoestimulación eléctrica intracraneal (AEIC), o modelos basados en el componente relacionado con el aprendizaje asociativo y la capacidad cognitiva de realizar predicciones sobre la obtención …

0301 basic medicinePunishment (psychology)media_common.quotation_subjectMedicine (miscellaneous)03 medical and health sciencesTratamiento médicoLucha contra la toxicomanía0302 clinical medicinemedicineReinforcementmedia_commonToxicomaníaComportamientoAddictionConductaCognitionExtinction (psychology)medicine.diseaseConditioned place preferenceAssociative learningPsychiatry and Mental health030104 developmental biologyPsychologyAddictive behaviorSocial psychology030217 neurology & neurosurgery
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A logarithmic multi-parameter model using gas sensor main and cross sensitivities to estimate gas concentrations in a gas mixture for SnO2 gas sensors

2007

Abstract In a metal-oxide semiconductor gas sensor, the sensitivity of the metal-oxide resistance to concentrations of reducing gases in the surrounding atmosphere is known to be related to adsorption and desorption of gas on the redox reactions between the gas and oxygen. Changes in the electric conductance due to these reactions were measured for tin dioxide semiconductor gas sensors. In this study, we propose a model of gas sensor responding behaviour using a relationship between sensor conductance and gas concentrations in a mixture. A least-squares method fit of measured data was applied to determining the values of coefficients. The proposed method uses main and cross sensitivities th…

Tin dioxidebusiness.industryMetals and AlloysAnalytical chemistrychemistry.chemical_elementConductanceCondensed Matter PhysicsOxygenSurfaces Coatings and FilmsElectronic Optical and Magnetic Materialschemistry.chemical_compoundAdsorptionSemiconductorchemistryDesorptionMaterials ChemistryPotentiometric sensorElectrical and Electronic EngineeringbusinessInstrumentationCarbonSensors and Actuators B: Chemical
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Adicción al juego: procesos psicológicos y conductas relacionadas

2021

La adicción a los juegos de azar supone uno de los principales problemas de conductas adictivas a nivel mundial. Por ello, es necesario conocer en profundidad cuáles son los procesos psicológicos y las conductas que pueden llevar a desarrollar o a empeorar esta problemática. La presente Tesis Doctoral, presentada en forma de compendio de investigaciones, tiene el objetivo de analizar una serie de factores implicados en los problemas de juego patológico. Estos factores son la medición de los problemas con el juego y una serie de procesos psicológicos y conductuales entre los que se encuentran la depresión, el afrontamiento del estrés, la susceptibilidad al efecto marco y las conductas prosoc…

efecto marco:PSICOLOGÍA::Psicofarmacología ::Abuso de drogas [UNESCO]motivos de juegoresilienciaapoyo socialafrontamiento del estrésdepresiónadicción al juegodistorsiones cognitivasUNESCO::PSICOLOGÍA::Psicofarmacología ::Abuso de drogasconducta prosocial
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Il miglioramento energetico nel recupero degli edifici storici. Applicazione al patrimonio architettonico palermitano

L'architettura storica può assumere un ruolo rilevante nel raggiungimento degli obiettivi europei di efficienza energetica per il settore edile, obiettivi che, tuttavia, devono essere compatibili con la conservazione del patrimonio storico e del suo valore culturale. A tal fine è necessario far riferimento ai caratteri specifici dell'architettura storica e alla sua dimensione locale. La presente tesi, sulla base di tale assunto, esamina le prestazioni energetiche degli edifici storici e il loro potenziale miglioramento, concentrandosi sul patrimonio architettonico di Palermo, caso di studio significativo per l'area mediterranea. La ricerca, condotta con riferimento sia alla scala urbana sia…

Historic architecture; energy efficiency; Palermo; calcarenite stone; thermal transmittance; thermal conductance; thermal conductivity; hygrothermal characterization; building categorization; building category; building typology; thermal simulation; WUFI Plus;thermal conductancetrasmittanza termicaSettore ICAR/10 - Architettura Tecnicaconduttanza termicaPalermothermal simulationWUFI Plucalcarenitehygrothermal characterizationArchitettura storica; efficienza energetica; Palermo; calcarenite; trasmittanza termica; conduttanza termica; conducibilità termica; caratterizzazione termica; caratterizzazione igrometrica; categorie edilizie; tipologie edilizie; simulazione termica; WUFI Plus;Historic architectureefficienza energeticathermal conductivitybuilding categoryenergy efficiencybuilding typologycategorie ediliziecaratterizzazione termicabuilding categorizationthermal transmittanceArchitettura storicacaratterizzazione igrometricatipologie edilizieconducibilità termicacalcarenite stonesimulazione termica
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