Search results for "Reference"

showing 10 items of 2491 documents

Diferencias de sexo en estrategias de aprendizaje de estudiantes online.

2018

Analizamos aquí las estrategias de aprendizaje empleadas por estudiantes universitarios, de modalidad online, en función del género. En primer lugar, se realiza una exhaustiva revisión de publicaciones que comparten el objeto de estudio, la mayoría de ellas difundidas en la última década y señalando los principales hallazgos de estas investigaciones. El objetivo del estudio es analizar tanto las estrategias empleadas como desvelar semejanzas y diferencias con respecto a modalidades presenciales. Metodológicamente optamos por realizar un diseño multimétodo, en el que el análisis cualitativo tiene como finalidad contribuir a la evaluación e interpretación de los resultados de tipo cuantitativ…

estrategia de aprendizajeControl (management)angustiamotivaciónMode (music)Qualitative analysisenseñanza a distanciaanálisis cualitativoAprenentatgeMathematics educationmedicineinteracción socialEstudi Tècniques d'Interpretation (philosophy)organizaciónmemorizaciónGeneral MedicineObject (philosophy)Preferenceestudiante universitario de primer cicloAsynchronous communicationdiferencia de sexoAnxietymedicine.symptomEducacióPsychologyplanificación
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Optimization of Delayed-State Kalman-Filter-based Algorithm via Differential Evolution for Sensorless Control of Induction Motors

2010

This paper proposes the employment of the differential evolution (DE) to offline optimize the covariance matrices of a new reduced delayed-state Kalman-filter (DSKF)-based algorithm which estimates the stator-flux linkage components, in the stationary reference frame, to realize sensorless control of induction motors (IMs). The DSKF-based algorithm uses the derivatives of the stator-flux components as mathematical model and the stator-voltage equations as observation model so that only a vector of four variables has to be offline optimized. Numerical results, carried out using a low-speed training test, show that the proposed DE-based approach is very promising and clearly outperforms a cla…

evolutionary algorithms (EAs)induction-motor (IM) drivesvelocity controlspeed sensorlessProportional controlcovariance matricesKalman filteralgorithmsSliding mode controlControl and Systems EngineeringRobustness (computer science)Control theoryAC motor drivesDifferential evolutionoptimization methodsstate estimationElectrical and Electronic EngineeringRobust controlparameter estimationAlgorithmStationary Reference FrameKalman filteringInduction motorMathematics
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El Portfolio Europeo de las Lenguas (PEL): herramienta de evaluación de la composición escrita en español como lengua extranjera

2013

Introducción Esta tesis pretende dar respuesta a uno de los desafíos que enfrentan los profesores de lenguas segundas (L2): mejorar la calidad de la evaluación de la expresión escrita. Partimos de la base del Marco Común Europeo de Referencia para las Lenguas (MCER), publicado por el Consejo de Europa con la intención de orientar la enseñanza y evaluación de lenguas, y del Portfolio Europeo de las Lenguas (PEL), cuyo propósito es aplicar en el aula los principios del MCER. Nos preguntamos si el PEL, que ha sido ampliamente experimentado en Educación Primaria y Secundaria, puede ser también útil como herramienta de evaluación de la composición escrita en niveles universitarios con estudiante…

expresión escrita:LINGÜÍSTICA [UNESCO]portfolio europeo de las lenguas (PEL)español como lengua extranjeraeuropean language portfolioenseñanza de lenguas segundasmarco común europeo de referencia para la enseñanza de las lenguasevaluacióncommon european framework of reference for languagesUNESCO::LINGÜÍSTICA
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A Curvature Based Method for Blind Mesh Visual Quality Assessment Using a General Regression Neural Network

2016

International audience; No-reference quality assessment is a challenging issue due to the non-existence of any information related to the reference and the unknown distortion type. The main goal is to design a computational method to objectively predict the human perceived quality of a distorted mesh and deal with the practical situation when the reference is not available. In this work, we design a no reference method that relies on the general regression neural network (GRNN). Our network is trained using the mean curvature which is an important perceptual feature representing the visual aspect of a 3D mesh. Relatively to the human subjective scores, the trained network successfully asses…

feature learning[ INFO.INFO-TS ] Computer Science [cs]/Signal and Image ProcessingComputer sciencemedia_common.quotation_subjectFeature extractiondistorted meshGRNNmean curvature02 engineering and technologyMachine learningcomputer.software_genreCurvaturevisual aspect representation[INFO.INFO-TS]Computer Science [cs]/Signal and Image ProcessingDistortioncomputational method0202 electrical engineering electronic engineering information engineeringFeature (machine learning)computational geometrymean opinion scoresQuality (business)Polygon meshmedia_commonArtificial neural networkbusiness.industrycompetitive scores Author Keywords Blind mesh visual quality assessmentperceptual feature020207 software engineeringregression analysis INSPEC: Non-Controlled Indexing curvature based methodblind mesh visual quality assessmentno-reference quality assessmentvisual qualityVisualizationgeneral regression neural network traininggeneral regression neural networkmesh generationneural netssubject scoreshuman perceived quality predictionhuman subjective scores020201 artificial intelligence & image processinglearning (artificial intelligence)Artificial intelligencepredicted objective scoresbusiness3D meshcomputer
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Dynamic of freshness perception in plain yoghurts temporal dominance of sensations

2013

Communication orale ; http://www.pangborn2013.com/; International audience

fermented milkGeneralLiterature_INTRODUCTORYANDSURVEY[ SDV.AEN ] Life Sciences [q-bio]/Food and Nutritionfermented milksfreshness sensation[SDV.AEN] Life Sciences [q-bio]/Food and Nutritiontemporal dominance of sensationsComputingMilieux_COMPUTERSANDEDUCATIONtemporal dominance of sensationpreferenceGeneralLiterature_REFERENCE(e.g.dictionariesencyclopediasglossaries)free sorting[SDV.AEN]Life Sciences [q-bio]/Food and NutritionComputingMilieux_MISCELLANEOUSpreferences
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Italian Consumers’ Preferences for Pasta and Consumption Trends: Tradition or Innovation?

2019

The aim of this study is to know Italian consumers’ preferences for Pasta and consumption habits. Food culture and concerns about food security and product innovation were investigated. A sample of Italian consumers was interviewed. Consumer’ profile, motivations and purchasing behavior were described. Relationships between observed variables and the latent constructs that explain the preferences were highlighted. There is asymmetric information between consumers and producers. Consumers believe Pasta is made with Italian grains, and therefore it is healthy and safe, although that’s not always the case. Intrinsic and extrinsic high quality, which derives from growing and production technolo…

food cultureMarketingConsumption (economics)0303 health sciencesFood securityconsumer preference030309 nutrition & dieteticsProduct innovation05 social sciencesSample (statistics)Food cultureBranding03 medical and health sciencesSettore AGR/01 - Economia Ed Estimo Rurale0502 economics and businesspricing050211 marketingBusinessBusiness and International ManagementMarketingsensory attributeFood ScienceJournal of International Food & Agribusiness Marketing
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Le plaisir à manger en EHPAD : point de vue du senior consommateur

2016

Revue; Le plaisir à manger en EHPAD : point de vue du senior consommateur. journée d'études ALIMS

food intake[ SDV.AEN ] Life Sciences [q-bio]/Food and Nutritionfoodagingfood selectivitymealpleasureelderlycontextolder adult[SDV.AEN] Life Sciences [q-bio]/Food and Nutritionageingattitudepreference[SDV.AEN]Life Sciences [q-bio]/Food and Nutritionenvironmentflavor enhancement
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Goût et préférences du consommateur âgé

2017

Revue; Goût et préférences du consommateur âgé. Sixième journée mondiale de la déglutition :

food intakeodor[ SDV.AEN ] Life Sciences [q-bio]/Food and Nutritionmasticationaliment[ SDV.MHEP.GEG ] Life Sciences [q-bio]/Human health and pathology/Geriatry and gerontologyperceptionelderlyolder adultolder peopletastepersonne âgéeperception du goûtmastication des alimentsflaveurchewingpreferencesenior citizensalimentationflavor[SDV.MHEP.GEG] Life Sciences [q-bio]/Human health and pathology/Geriatry and gerontology[SDV.MHEP.GEG]Life Sciences [q-bio]/Human health and pathology/Geriatry and gerontologyfooddental statusagingodeur alimentaireselectivitypréférence alimentairesalivationseniorflavourfoodstuff[SDV.AEN] Life Sciences [q-bio]/Food and Nutritionchemosensoryaromaagesanté bucco-dentaireageingoral healthtexturesensorial perceptionperception sensorielle[SDV.AEN]Life Sciences [q-bio]/Food and Nutritionsécrétion salivairefood preferences
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Have children's food preferences been under the influence of the evolution of food supply?

2022

food supply[SDV.AEN] Life Sciences [q-bio]/Food and Nutritionchildren[SDV.NEU.PC] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Psychology and behaviorfood preferencebehaviour
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Physical chemical properties and kinetics of redox processes in water/soybean oil microemulsions

2008

Microemulsoes de agua em oleo (ME w/o) constituidas de agua, oleo de soja, SDS (dodecil sulfato de sodio) e diversos alcoois de cadeia curta foram caracterizadas sob o ponto de vista fisico-quimico e de propriedades eletroanaliticas. Foram testados diferentes co-surfactantes e razoes surfactante:cosurfactante, sendo a ME com a composicao mais favoravel utilizada para estudar a cinetica de processos redox. Para tanto, realizaram-se medidas de voltametria ciclica utilizando como eletrodo de trabalho um ultramicroeletrodo de disco de Pt e, como eletrodo de referencia e auxiliar, foram usados Ag/AgCl e Pt, respectivamente, e ferroceno como uma sonda. Verificou-se que a estabilidade termodinâmic…

food.ingredientAqueous solutionChemistryStereochemistryKineticsGeneral ChemistryReference electrodeRedoxSoybean oilchemistry.chemical_compoundfoodMicroemulsionSodium dodecyl sulfateCyclic voltammetryNuclear chemistryJournal of the Brazilian Chemical Society
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