Search results for "Degree of similarity"

showing 3 items of 3 documents

Connected pathway relative permeability from pore-scale imaging of imbibition

2016

Abstract Pore-scale images obtained from a synchrotron-based X-ray computed micro-tomography (µCT) imbibition experiment in sandstone rock were used to conduct Navier–Stokes flow simulations on the connected pathways of water and oil phases. The resulting relative permeability was compared with steady-state Darcy-scale imbibition experiments on 5 cm large twin samples from the same outcrop sandstone material. While the relative permeability curves display a large degree of similarity, the endpoint saturations for the µCT data are 10% in saturation units higher than the experimental data. However, the two datasets match well when normalizing to the mobile saturation range. The agreement is p…

Environmental Engineering010504 meteorology & atmospheric sciencesCapillary actionImbibition0208 environmental biotechnologyMineralogy610 Medicine & health02 engineering and technology01 natural sciences0905 Civil Engineering170 EthicsPore scale2312 Water Science and TechnologyDegree of similarity10237 Institute of Biomedical Engineering0105 earth and related environmental sciencesWater Science and TechnologyPore scaleMultiphase flowRelative permeabilityMechanics020801 environmental engineering0907 Environmental EngineeringDrainageImbibitionMultiphase flowSaturation (chemistry)Relative permeabilityX-ray tomographyGeology
researchProduct

Prediction of the difficulty level in a standardized reading comprehension test : contributions from cognitive psychology and psychometrics

2013

Esta investigación busca identificar posibles variables predictoras del nivel de dificultad de los ítems de comprensión de lectura utilizados en una prueba psicométrica estandarizada para la admisión a una institución universitaria. Se propusieron varios posibles predictores del nivel de dificultad, a saber: densidad proposicional, negaciones, estructura sintáctica, dificultad del vocabulario, presencia elementos de realce (palabras resaltadas tipográficamente), abstracción del ítem y grado de similitud entre opción correcta y texto relevante para resolver el ítem. Mediante el Modelo Logístico Lineal de Rasgo Latente se encontró que la cantidad de proposiciones, la estructura sintáctica y, …

Grammatical structureVocabularycomprensión del textopsicología cognitivaItem Response Theorymedia_common.quotation_subjectItem difficulty levelItem difficultyProcesamiento del lenguajelcsh:LB5-3640Educationanálisis de ítemTeoría de Respuesta al ÍtemNegation372.47 Estrategias de comprensión de lecturaCognitive psychologyDegree of similarityLanguage processingModelo Logístico Lineal de Rasgo Latentemedia_commonlecturaReading comprehensionPsicología cognitivaTest (assessment)lcsh:Theory and practice of educationReading comprehensionComprensión de lecturaLinear Logistic Test ModelSyntactic structurePsicología cognitiva Procesamiento del lenguaje Comprensión de lectura Teoría de Respuesta al Ítem Modelo Logístico Lineal de Rasgo Latente Análisis de tareas Nivel de dificultad de los ítemsAnálisis de tareasPsychologyTask AnalysisCognitive psychology
researchProduct

SIFT Texture Description for Understanding Breast Ultrasound Images

2014

Texture is a powerful cue for describing structures that show a high degree of similarity in their image intensity patterns. This paper describes the use of Self-Invariant Feature Transform (SIFT), both as low-level and high-level descriptors, applied to differentiate the tissues present in breast US images. For the low-level texture descriptors case, SIFT descriptors are extracted from a regular grid. The high-level texture descriptor is build as a Bag-of-Features (BoF) of SIFT descriptors. Experimental results are provided showing the validity of the proposed approach for describing the tissues in breast US images.

medicine.diagnostic_testFeature transformbusiness.industryTexture DescriptorInformationSystems_INFORMATIONSTORAGEANDRETRIEVALComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONScale-invariant feature transformPattern recognitionTexture (geology)ComputingMethodologies_PATTERNRECOGNITIONmedicineDegree of similarityComputer visionArtificial intelligencebusinessBreast ultrasoundMathematics
researchProduct