Artículos Científicos: Envíos recientes
Mostrando publicaciones 2601-2620 de 3929
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Perspectiva de la responsabilidad social empresarial de la salud pública chilena
(2020)La presente investigación examina las percepciones de usuarios del sector salud respecto de la responsabilidad social de instituciones prestadoras de este servicio. Mediante aplicación de un cuestionario de escala tipo ...
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Social responsibility of higher education students. Motivations for its development in times of COVID-19 in Chile and El Salvador
(2020)La crisis de salud producto de Covid-19 ha llevado a la reflexión sobre diversos aspectos de la vida humana desde la perspectiva de su comportamiento en la sociedad. El propósito de esta investigación es analizar la ...
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Validez de ecuaciones y propuesta de valores referenciales para estimar la masa grasa de adultos mayores
(2020)Background: Excess fat mass (FM) has a higher risk of producing sarcopenia, physical deterioration and reduced quality of life in older people. Aim: To propose regression equations based on the Body Mass Index (BMI) to ...
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Disociaciones entre discurso y prácticas lectoras en futuros profesores: pistas para la formación docente
(2020)Las creencias y representaciones operan sobre la acción, así es posible pensar que el tipo de mediaciones que realizará el profesor en el aula dependerán de su bagaje lector, sus concepciones sobre la lectura y de la ...
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Indicadores antropométricos y fisiológicos relacionados con el riesgo metabólico en adolescentes obesos con y sin actividad física
(2020)El nivel de actividad física uno de los factores que determina una mayor predisposición para el desarrollo de cambios metabólicos que alteran la salud del individuo. El objetivo del trabajo fue comparar indicadores ...
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Diseño y validación de un cuestionario para evaluar desempeño docente asociado a las prácticas evaluativas formativas
(2020)La evaluación formativa es una práctica evaluativa áulica para el mejoramiento del aprendizaje. El objetivo de este trabajo es reportar el proceso de validación de un cuestionario de evaluación formativa con base en la ...
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Longitudinal exposure to pyrethroids (3-PBA and trans-DCCA) and 2,4-D herbicide in rural schoolchildren of Maule region, Chile
(2020)Background: Several studies showed that early exposure to pesticides affects the development and health of children. In Maule, there is previous evidence of the high exposure to organophosphate pesticides (OP) of schoolchildren. ...
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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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Extreme learning machine adapted to noise based on optimization algorithms
; Mora, Marco; ; (2020)
The extreme learning machine for neural networks of feedforward of a single hidden layer randomly assigns the weights of entry and analytically determines the weights the output by means the Moore-Penrose inverse, this ...
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Conditioning of extreme learning machine for noisy data using heuristic optimization
; Mora, Marco; ; (2020)
This article provides a tool that can be used in the exact sciences to obtain good approximations to reality when noisy data is inevitable. Two heuristic optimization algorithms are implemented: Simulated Annealing and ...
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The olivocochlear refex strength in awake chinchillas is relevant for behavioural performance during visual selective attention with auditory distractors
(2020)The auditory efferent system comprises descending projections from the cerebral cortex to subcortical nuclei, reaching the cochlear receptor through olivocochlear fibres. One of the functions attributed to this corticofugal ...
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The potential role of dietary advanced glycation endproducts in the development of chronic non-infectious diseases: A narrative review
; ; ; Rojas, Armando; ; (2020)
Increasing clinical and experimental evidence accumulated during the past few decades supports an important role for dietary advanced glycation endproducts (AGE) in the pathogenesis of many chronic non-infectious diseases, ...
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A family of skew-normal distributions for modeling proportions and rates with zeros/ones excess
(2020)In this paper, we consider skew-normal distributions for constructing new a distribution which allows us to model proportions and rates with zero/one inflation as an alternative to the inflated beta distributions. The new ...
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Development and validation of a brief scale to assess attachment in adults: psychometric analysis in Latin America
; ; Lepe Martinez, Nancy Fabiola; ; ; ; (2020)
La evaluación del apego en la población adulta de Latinoamérica es una línea de investigación todavía no resuelta. En este estudio se tuvo como objetivo desarrollar y validar una escala para medir el apego en el contexto ...
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Control postural en niños con sobrepeso y obesidad: una revisión de la literatura
(2020)El sobrepeso y obesidad infantil se han convertido en un problema de salud a nivel mundial. A medida que la incidencia y la gravedad del sobrepeso y la obesidad siguen aumentando en niños, la determinación de los efectos ...
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Artisan brick kilns: State-of-the-art and future trends
(2020)A large part of the global brick manufacturing industry has evolved based on knowledge transmitted from generation to generation without developing a consistent scientific approach. The purpose of this article is to ...
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A deep learning approach to population structure inference in inbred lines of maize
(2020)Analysis of population genetic variation and structure is a common practice for genome-wide studies, including association mapping, ecology, and evolution studies in several crop species. In this study, machine learning ...
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Production of prodigiosin by a drug-resistant Serratia rubidaea HB01 isolated from sewage
(2020)Production of green pigments has drawn great attention recently in various applications like foods, cosmetics, nutraceuticals, and pharmaceuticals as it counters the harmful effects of synthetic dyes. Use of green natural ...
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Root endophytic Penicillium promotes growth of Antarctic vascular plants by enhancing nitrogen mineralization
(2020)Fungal endophyte associations have been suggested as a possible strategy of Antarctic vascular plants for surviving the extreme environmental conditions of Antarctica. However, the mechanisms by which this occurs are still ...
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A tradeoff between fitness‐related traits mask facilitation in a semiarid ecosystem
(2020)In stressful environments, a nurse plant can ameliorate harsh biotic and abiotic conditions for another plant species that grows within its canopy. This canopy can act as a barrier for herbivores, reducing damage to the ...