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Mostrando ítems 796-815 de 823
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Understanding dust sources through remote sensing: Making a case for CubeSats
(2020-10-05)Abstract: Dust sources have been revealed through remote sensing, first regionally by ~1° resolution sensors (TOMS), then at sub-basin scale by moderate-resolution sensors (MODIS). Sensors with higher spatial resolution ... -
Understanding the apparent superiority of over-sampling through an analysis of local information for class-imbalanced data
(2019-10-14)Data plays a key role in the design of expert and intelligent systems and therefore, data preprocessing appears to be a critical step to produce high-quality data and build accurate machine learning models. Over the past ... -
Unequal binary configurations of interacting Kerr black holes
(2018-11-10)Stationary axisymmetric binary configurations of unequal Kerr sources with a massless strut among them are developed in a physical representation. In order to describe interacting black holes, the axis conditions in the ... -
Unveiling quantum superparamagnetism by interacting monodomains in multiferroic Er-doped bismuth ferrate nanostructured particles
(2021-03-15)In the last few years, the quantum superparamagnetic (QSP) phenomenon has been reported in isolated ultrasmall nanoparticles. In this work, a QSP state and superparamagnetic (SP) state in nanostructured Er-doped BiFeO3 ... -
Urban evaporative consumptive use for water‐scarce cities in the United States and Mexico
(2020-09-07)In this work, we estimate urban evaporative consumptive use (urban ECU) in three cities in a semiarid region experiencing water scarcity: El Paso, Texas, and Las Cruces, New Mexico, in the United States and Ciudad Juárez, ... -
Urban land cover type determines the sensitivity of carbon dioxide fluxes to precipitation in Phoenix, Arizona
(2020-02-12)Urbanization modifies land surface characteristics with consequent impacts on local energy, water, and carbon dioxide (CO2) fluxes. Despite the disproportionate impact of cities on CO2 emissions, few studies have directly ... -
Using Regression Models for Predicting the Product Quality in a Tubing Extrusion Process
(2019-08-01)Quality in a manufacturing process implies that the performance characteristics of the product and the process itself are designed to meet specific objectives. Thus, accurate quality prediction plays a principal role in ... -
Uso autónomo de recursos de Internet entre estudiantes de ingeniería como fuente de ayuda matemática
(2018-04)Resumen. Se presenta un estudio enfocado en analizar el uso autónomo de recursos de Internet por parte de estudiantes de ingeniería como fuente de ayuda para sus clases de matemáticas. Se utiliza un método ... -
Uso de KDSM para la Gestión de Conocimiento en el Ámbito de la TEC
(2022-03-19)Este artículo tiene como objetivo comunicar los resultados del uso de la metodología KDSM (Knowledge Management in Serial Measurements) para gestionar conocimiento proveniente de un estudio que emplea la Terapia ... -
Utilización de GPU-CUDA en el Procesamiento Digital de Imágenes
(2018-12-01)El procesamiento de imágenes es una herramienta de gran utilidad en diversas aplicaciones como video vigilancia, reconstrucción de imágenes, información geográfica y médica. Sin embargo, estas aplicaciones requieren una ... -
Validez Estadística Del Modelo De Medida De Las 4PS De Actividades Cambios Rápidos
(2020-12-01)Algunos retos de las organizaciones hoy en día es aumentar la calidad, eficiencia y flexibilidad en sus procesos productivos, con el objetivo de ampliar y diversificar la oferta de productos y servicios que brindan al ... -
Los valores egocéntricos desfavorecen el comportamiento pro-ambiental de los guías de buceo en el Parque Nacional Arrecifes de Cozumel
(2019-04-10)El buceo como actividad turística ha potencializado la economía, pero también ha impactado a las zonas arrecifales. Durante el buceo, el guía es el principal actor en la protección del ambiente marino, pues ... -
Variable structural stiffness in frictional energy dissipation with layer elements
(2022-07-01)This paper presents an experimental and numerical study that allows to evaluate the dissipation of impact energy, proposing a friction damper with the use of layers (LFD) for impact energy dissipation. The study is carried ... -
Variables estratégicas determinantes de las intenciones de comportamiento en espacios protegidos
(2021-04-27)El artículo analiza, estratégicamente, un destino turístico insular con áreas naturales protegidas (Cozumel) a partir de la observación de distintos tipos de motivación enlazados con la imagen cognitiva y afectiva de los ... -
Vibration Fatigue Life Reliability Cable Trough Assessment by Using Weibull Distribution
(2023-03-30)In this paper, the formulation to incorporate the used vibration profile, the stress generated by the product’s application, mass, and the resonance frequency is given. After that, based on the vibration output data, the ... -
Water conservation potential of modified turf grass irrigation in urban parks of Phoenix, Arizona
(2022-04-28)Large amounts of water are consumed by urban parks in arid regions such that efficient irrigation practices are needed. In Phoenix, Arizona, extensive turf grass areas are supported using flood or sprinkler irrigation that ... -
Weibull Analysis for Constant and Variant Stress Behavior Using the Alt Method for Single Stress and the Taguchi Method for Several Stress Variables
(2018-04)The article presents the advances on Weibull analysis which let practitioners to plan the data collection test, to fit the Weibull parameters directly from the applied stress values, to determine the capability indices cp ... -
Weibull analysis for normal/accelerated and fatigue random vibration test
(2019-05-16)In this paper, the formula to estimate the sample size n to perform a random vibration test is derived only from the desired reliability (R(t)). Then, the addressed n value is used to design the ISO16750‐3 random vibration ... -
Weibull S-N Fatigue Strength Curve Analysis for A572 Gr. 50 Steel, Based on the True Stress—True Strain Approach
(2020-08-18)In this paper a Weibull methodology to determine the probabilistic percentiles for the S-N curve of the A572 Gr. 50 steel is formulated. The given Weibull/S-N formulation is based on the true stress and true strain values, ... -
Weibull stress method to determine the minimum required strength to improve the actual reliability
(2023-03-21)The method to determine the minimum strength that a product must present to improve the product’s reliability from its actual R(t) to a desired R(t2) index are given. Themethod can be performed in both the normal and ...