Browsing by Title
Now showing items 2189-2208 of 3172
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O autoconceito é um atributo interveniente no estilo de liderança de treinadores de futsal de alto rendimento?
(2019)En el escenario deportivo, el autoconcepto ha sido señalado como un atributo psicológico fundamental para el desempeño de entrenadores y atletas, incidiendo sobre el control de las emociones y las expectativas de éxito o ...
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Obesidad en lactantes: efecto protector de la lactancia materna versus fórmulas lácteas
(2020)El objetivo del trabajo fue analizar el posible efecto protector de la lactancia materna respecto a la obesidad infantil versus fórmulas lácteas. Se consultaron las bases de datos PubMed, Web of Science y Scielo, considerándose ...
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Objetos matemáticos ligados a la estadística y la probabilidad en educación infantil: un análisis desde los libros de texto
(2020)En este artículo se analiza cómo son abordados los contenidos de estadística y probabilidad en los libros de texto de Educación Infantil en Chile. Para ello, utilizamos herramientas teóricas del Enfoque Ontosemiótico del ...
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Observations on the biology and distribution of Uresiphita reversalis (Lepidoptera, Crambidae), a defoliator of the native tree Calia secundiflora in México
(2014)Observations on the biology and distribution of Uresiphita reversalis (Lepidoptera, Crambidae), a defoliator of the native tree Calia secundiflora in México. Uresiphita reversalis (Guenée, 1854) feeding on Calia secundiflora ...
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Observations on the emergence rates of Meteorus pulchricornis (Hymenoptera: Braconidae) and densities of Uresiphita polygonalis maorialis (Lepidoptera: Crambidae) larvae
(2011)Uresiphita polygonalis maorialis (the kowhai moth) is a well-known defoliator of Sophora spp. plants in New Zealand. Here data is presented from an experiment carried out between December 2007 and February 2008. The ...
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Obstaculizadores y facilitadores que enfrentan las madres-estudiantes de la carrera educación parvularia para cumplir con ambos roles durante su formación académica
(Universidad Católica del Maule, Facultad de Ciencias de la Educación, Escuela de Educación Parvularia, 2020)Se logró encontrar a varias jóvenes que ingresaron a la educación superior siendo madres o que han sido madres durante su proceso de formación académica. . Esto implica que de forma diaria deben cumplir a la vez ambos ...
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Obstáculos y errores conceptuales detectados en el proceso de aprendizaje de los números enteros y su operatoria, por parte de los estudiantes que terminan la enseñanza básica
(Universidad Católica del Maule, Facultad de Ciencias Básicas, 2014) -
Obtención y caracterización de carbones activados preparados a partir de cenizas volantes de una planta de cogeneración en Constitución, Chile
; abril, diana
(2013)
El alto costo de la producción de carbones activados (CA) ha llevado a la búsqueda de nuevas materias primas de bajo costo y alta disponibilidad, en donde las cenizas volantes (CV) surgen como una alternativa a ser ...
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Ocio, placer y (auto)movilidad en la construcción simbólica de los “alrededores de Santiago"
(2016)Partiendo del entendido de que la vida urbana puede extenderse a los territorios extraurbanos antes de que estos sean construidos e incorporados a la trama, se estudiarán los paseos de ocio a las afueras de Santiago, que ...
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Off-line writer verification based on simple graphemes
; Mora, Marco; (2018)
A method to writer verification based on handwritten stroke analysis is presented. The proposed descriptors correspond to an estimation of the pressure applied when writing using the grayscale image of the stroke. These ...
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Off-line writer verification using segments of handwritten samples and SVM
; ; Mora, Marco (2021)
This works presents a method to verify a person identity based on off-line handwritten strokes analysis. Its main contribution is that the descriptors are obtained from the constitutive segments of each grapheme, in contrast ...
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On a logistic regression model with random intercept: diagnostic analytics, simulation and biological application
(2020)This article proposes a methodology for diagnostics in a logistic regression with random intercept motivated by a biological study. The methodology includes local and global influence techniques allowing us to contrast the ...
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On a partial least squares regression model for asymmetric data with a chemical application in mining
(2019)In chemometrical applications, covariates in regression models are often correlated, causing a collinearity problem that can be solved by partial least squares (PLS) regression. In addition, high dimensionality in the space ...
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On existence of semi-wavefronts for a non-local reaction–diffusion equation with distributed delay
(2018)We study the problem of existence of semi-wavefront solutions for a non-local delayed reaction–diffusion equation with monostable nonlinearity. In difference with previous works, we consider non-local interaction which can ...
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On some goodness-of-fit tests and their connection to graphical methods with uncensored and censored data
(2020)In this work, we present goodness-of-fit tests related to the Kolmogorov-Smirnov and Michael statistics and connect them to graphical methods with uncensored and censored data. The Anderson-Darling test is often empirically ...
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On the nature of the enzyme–substrate complex and the reaction mechanism in human Arginase I. A combined molecular dynamics and QM/MM study
(2020)We present here a complete detailed theoretical analysis of l-arginine hydrolysis catalyzed by human arginase I (HARGI). Our study combines classical molecular dynamics (MD) simulations of different models for the ...
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On the tractability of shortest path problems in weighted edge-coloured graphs
(2018)A weighted edge-coloured graph is a graph for which each edge is assigned both a positive weight and a discrete colour, and can be used to model transportation and computer networks in which there are multiple transportation ...
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On the uniqueness of semi-wavefronts for non-local delayed reaction–diffusion equations
(2015)We establish the uniqueness of semi-wavefront solution for a non-local delayed reaction–diffusion equation. This result is obtained by using a generalization of the Diekmann–Kaper theory for a nonlinear convolution equation. ...
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On uniqueness of semi-wavefronts: Diekmann–Kaper theory of a nonlinear convolution equation re-visited
(2012)Motivated by the uniqueness problem for monostable semi-wave -fronts, we propose a revised version of the Diekmann and Kaper theory of a nonlinear convolution equation. Our version of the Diekmann–Kaper theory allows (1) ...