DSpace Collection:
http://repositorio.uisek.edu.ec/handle/123456789/2760
2024-03-13T11:36:37ZMaterial selection, simulation and validation for cop coils high voltage spark plug boots insulators
http://repositorio.uisek.edu.ec/handle/123456789/4203
Title: Material selection, simulation and validation for cop coils high voltage spark plug boots insulators
Authors: Martínez Gómez, Javier; Portilla, Eduardo; Espinosa Aguilar, Juan Gabriel; Moreno, Gustavo
Abstract: The following research presents the study and selection of an
alternative composite material to manufacture electrical insulation devices for
the high voltage circuit of Otto cycle internal combustion engines, better known
as gasoline engines. High voltage insulators are generally made of materials
such as rubber or silicone, whose material, when subjected to high temperatures,
suffers technical degradation, causing electric power leaks and engine power
losses. The purpose of this study is to suggest a composite material, with which
only these insulating bodies can be manufactured. To do this, multicriteria
selection techniques are used while the results are validated by virtual simulation
of thermal character and normed experimental tests.2020-11-22T00:00:00ZClustering analysis of electricity consumption of municipalities in the province of Pichincha-Ecuador using the k-means algorithm
http://repositorio.uisek.edu.ec/handle/123456789/4202
Title: Clustering analysis of electricity consumption of municipalities in the province of Pichincha-Ecuador using the k-means algorithm
Authors: Llanes Cedeño, Edilberto Antonio; Núñez Barrionuevo, Oscar F.; Martínez Gómez, Javier; Guachimboza Dávalos, Jorge I.; López Villada, Jesús
Abstract: This work shows an analysis of electricity consumption by
parishes in the province of Pichincha to define consumption affinities
between them. To do this, categorical variables are encoded to be used AQ1
with the unsupervised machine learning algorithm k-means. As relevant
results, four types of consumption are established and they are analyzed
in relation to population density while algorithm represents 100% of the
variability of the data, and municipalities with different consumption
trends are identified.2020-11-11T00:00:00ZPrediction of monthly electricity consumption by cantons in Ecuador through neural networks: a case study
http://repositorio.uisek.edu.ec/handle/123456789/4201
Title: Prediction of monthly electricity consumption by cantons in Ecuador through neural networks: a case study
Authors: Llanes Cedeño, Edilberto Antonio; Guachimboza Davalos, Jorge I.; Rubio Aguiar, Rodolfo J.; Peralta Zurita, Diana Belén; Núñez Barrionuevo, Oscar F.
Abstract: Abstract. The present work shows a multivariate regression through
deep learning related to energy consumption in the province of Pichincha-
Ecuador in relation to its cantons. This is done to establish consumption
habits in relation to the existing population. For this, a data preprocess-
ing stage was implemented and later an artificial neural network of a
hidden layer and 15 neurons. As a result, a mathematical model with an
absolute error of 2.2 % is obtained.2020-11-11T00:00:00ZLa salud ocupacional en Ecuador: una comparación con las encuestas sobre condiciones de trabajo en América Latina
http://repositorio.uisek.edu.ec/handle/123456789/4200
Title: La salud ocupacional en Ecuador: una comparación con las encuestas sobre condiciones de trabajo en América Latina
Authors: Merino Salazar, Pamela Alexandra; Silva Peñaherrera, Michael; Benavides, Fernando G.; López Ruiz, María; Gómez García, Antonio Ramón
Abstract: Introduction: Ecuador has recently implemented its First Working Conditions
Survey. Objective: to describe working and employment conditions and workers’
health status in Ecuador in a sample that allows comparison with previous
Latin American surveys. Methods: a sample of 1,713 workers was drawn
from the First Working Conditions Survey in Ecuador. Prevalence and a 95%
confidence Interval (95%CI) were calculated and compared with previous Latin
American surveys in Colombia, Argentina, Chile, Central America, and Uruguay.
Results: men were more often exposed to hazardous working conditions, with
noise (81% of men and 69% of women), and repetitive movements (56% and
48%, respectively) being the most frequently reported. About 31% of men and
19% of women worked more than 40 hours per week. Almost 11% of both
women and men reported poor self-perceived health status. The prevalence of
occupational injury was the highest in the region: 15% for men and 8.4% for
women. Conclusions: this is a first approach to the working and employment
conditions and workers’ health status in Ecuador. To harmonize and improve
Working Conditions Surveys in Latin America should be a priority goal for
enhancing regional occupational health surveillance.
Description: Introducción: Ecuador ha realizado recientemente su primera encuesta sobre
las condiciones de trabajo. Objetivo: describir las condiciones de trabajo y
empleo y el estado de salud de los trabajadores en Ecuador en una muestra
que permita la comparación con encuestas anteriores en América Latina.
Métodos: se seleccionó una muestra de 1.713 trabajadores de la Primera
Encuesta de Condiciones de Trabajo en el Ecuador. Se calculó la prevalencia
y el intervalo de confianza del 95% (IC95%) y se comparó con las encuestas
anteriores realizadas en América Latina – Colombia, Argentina, Chile, América
Central y Uruguay. Resultados: hombres se exponen con mayor frecuencia a
condiciones de trabajo peligrosas, siendo las más frecuentes el ruido (81%
de los hombres y 69% de las mujeres) y los movimientos repetitivos (56% y
48%, respectivamente). Alrededor del 31% de los hombres y el 19% de las
mujeres trabajan más de 40 horas por semana. Casi el 11% de las mujeres
y de los hombres reportaron mala salud autopercibida. La prevalencia de
lesiones ocupacionales fue la más alta de la región: el 15% para los hombres y
el 8,4% para las mujeres. Conclusiones: este es un primer acercamiento a las
condiciones de trabajo y empleo y al estado de salud de los trabajadores en
el Ecuador. Armonizar y mejorar las Encuestas de Condiciones de Trabajo en
América Latina debería ser un objetivo prioritario para mejorar la vigilancia de
la salud ocupacional en esta región.2020-08-11T00:00:00Z