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Mostrando publicaciones 151-160 de 398
Simultaneous filtering and sharpening of vector-valued images with numerical schemes
(2019)
The present work deals with the development of a novel approach to increase the quality of 3D vector-valued (4D) images. We model the problem as a coupled anisotropic convection diffusion filtering scheme based upon local ...
H2 gain-scheduled design subject to inexact measurements: performance comparison of two models for additive uncertainty
(2019)
This paper investigates the problem of H2 gain-scheduled design (control and filtering) for LPV systems where the scheduling parameters are affected by additive noises. The purpose is to analyze the impact on the H2 ...
Cambios en la propiedad agrícola del sector reformado chileno en la comuna de Curicó (Chile), período 1975-2007
(2019)
Durante el gobierno de Eduardo Frei Montalva se dicta la ley 16.640 de Reforma Agraria en 1967 que provocó cambios en la estructura predial del país. Razones políticas que son parte de la historia del país, impidieron que ...
Acciones y percepciones de la gestión educativa en escuelas con alumnado migrante
(2019)
El estudio tiene como objetivo analizar las acciones y percepciones del equipo directivo y docente en relación al alumnado migrante que se inserta en escuelas de la ciudad de Talca, Chile. El estudio es de tipo exploratorio ...
Microbiology and nitrogen cycle in the benthic sediments of a glacial oligotrophic deep andean lake as analog of ancient martian lake-beds
(2019)
Potential benthic habitats of early Mars lakes, probably oligotrophic, could range from hydrothermal to cold sediments. Dynamic processes in the water column (such as turbidity or UV penetration) as well as in the benthic ...
Effects of prolonged head-down bed rest on cardiac and vascular baroreceptor modulation and orthostatic tolerance in healthy individuals
(2019)
Orthostatic intolerance commonly occurs after prolonged bed rest, thus increasing the risk of syncope and falls. Baroreflex-mediated adjustments of heart rate and sympathetic vasomotor activity (muscle sympathetic nerve ...
Risk assessment tools and data-driven approaches for predicting and preventing suicidal behavior
(2019)
Risk assessment of suicidal behavior is a time-consuming but notoriously inaccurate activity for mental health services globally. In the last 50 years a large number of tools have been designed for suicide risk assessment, ...
Morfología y repercusiones diagnóstico-terapéuticas de las lesiones preneoplásicas gástricas
(2019)
El carcinoma gástrico (CG) de tipo intestinal se origina en un epitelio displásico, que a su vez se desarrolla en medio de una atrofia gástrica (AG) y metaplasia intestinal (MI). La infección por Helicobacter pylori (HP) ...
Uso del índice de masa corporal y porcentaje de grasa corporal en el análisis de la función pulmonar
(2019)
En la actualidad la obesidad es considerada como una pandemia, además de los cambios metabólicos ya sabidos, se producen alteraciones estructurales como las generadas en el sistema ventilatorio. Sin embargo, se ha observado ...