Artículo en revista de investigación: Envíos recientes
Mostrando ítems 481-500 de 823
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Geometric considerations for the 3D printing of components using fused filament fabrication
(2020-06-30)Demand in 3D printing products using fused filament fabrication (FFF) in industry has been growth a lot with 55% in development of prototypes, 43% in production, and 41% in conceptual models for testing. However, information ... -
Convolutional Neural Network in a Pseudo-Distributed Environment for Classification of Chest X-Ray Images of Patients with Pneumonia
(2020-05-01)In recent years, there has been an increase in the volume of medical data, generating hundreds of terabytes (TB)/petabytes (PB) of data from different sources. This has led to the emergence of innovative technologies such ... -
Exact analytic solution of an unsolvable class of first Lane–Emden equation for polytropic gas sphere
(2020-07-24)This article provides for thefirst time a general analytical solution to the Lane-Emden equation of thefirst kind.So far only three known analytical solutions are found in the literature, for the following values ofn: 0, ... -
Mathematical help-seeking: observing how undergraduate students use the Internet to cope with a mathematical task
(2020-01-07)We report on a study focused on identifying how undergraduate students make use of the Internet as a source of help to solve their mathematical queries. In particular, with the help of monitoring software, we observe how ... -
Environmental impact of wine fermentation in steel and concrete tanks
(2020-08-10)Wine industries commonly use concrete and stainless-steel tanks in fermentation, but the selection of a container depends on factors such as price, installation costs, requirements, maintenance costs, and monitorability. ... -
A Review of Carpal Tunnel Syndrome and Its Association with Age, Body Mass Index, Cardiovascular Risk Factors, Hand Dominance, and Sex
(2020-05-18)Carpal tunnel syndrome (CTS) is one of the most common compressive, canalicular neuropathies of the upper extremities, causing hand pain and impaired function. CTS results from compression or injury of the median nerve at ... -
Effect of ICT integration on SC flexibility, agility and company’ performance: the Mexican maquiladora experience
(2019-06-24)s article reports a structural equation model (SEM) with four latent variables to measure the relationship between information and communication technologies (ICT) integration with supply chain flexibility, supply chain ... -
Procesos de Oxidación Avanzada y Electroquímicos para Remover Edulcorantes Artificiales del Agua
(2020-01-31)El objetivo de la presente revisión es presentar investigaciones recientes sobre la remoción de algunos edulcorantes —reconocidos como contaminantes emergentes— del agua o matrices acuosas, utilizando los Procesos de ... -
Stress-Based Weibull Method to Select a Ball Bearing and Determine Its Actual Reliability
(2020-11-16)Since the designed bearing’s reliability of 90% was determined in a lab environment, it does not represent the actual used environment. In this paper, a new methodology to determine the actual reliability that corresponds ... -
Corotating dyonic binary black holes
(2020-11-12)This paper is dedicated to derive and study binary systems of identical corotating dyonic black holes separated by a massless strut—two 5-parametric corotating binary black hole models endowed with both electric and magnetic ... -
Fatigue-Life Prediction of Mechanical Element by Using the Weibull Distribution
(2020-09-13)Applying Goodman, Gerber, Soderberg and Elliptical failure theories does not make it possible to determine the span of failure times (cycles to failure-Ni) of a mechanical element, and so in this paper a fatigue-life/Weibull ... -
News Classification for Identifying Traffic Incident Points in a Spanish-Speaking Country: A Real-World Case Study of Class Imbalance Learning
(2020-09-09)‘El Diario de Juárez’ is a local newspaper in a city of 1.5 million Spanish-speaking inhabitants that publishes texts of which citizens read them on both a website and an RSS (Really Simple Syndication) service. This ... -
Effect of Ni additions and hot deformation on precipitation behavior and hardness in AleSieMg aged alloys
(2020-02-19)Additions of 1e2 Ni (wt. %) and hot deformation on the microstructure and hardness of A356 aged alloy were studied. The results show that the addition of this element generates the formation of Ni31Si12 and NiFe phases ... -
Síntesis y Caracterización de Nanopartícula s de NiS Mediante Procedimiento de Química Suave
(2020-11-05)In this research, the synthesis and characterization of nickel sulphide (NiS) semiconductor nanoparticles (Nps) in solution is reported, the effect of glycine as complexing agent at different concentration was studied. The ... -
Multi-physics continuum modelling approaches for metal powder additive manufacturing: a review
(2020-03-14)This paper aims to present a systematic approach in the literature survey related to metal additive manufacturing (AM) processes and its multi-physics continuum modelling approach for its better understanding. Design/me ... -
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, ... -
Control de balanceo de una motocicleta autónoma mediante una rueda de reacción
(2019-10-20)Uno de los prototipos más empleados para la enseñanza de estrategias de control moderno son los llamados péndulos invertidos: péndulo invertido, carro péndulo, péndulo con rueda inercial o de reacción, entre otros. En este ... -
Patrones de concentración de carbono negro y principales fuentes de emisión en Ciudad Juárez, Chihuahua, México
(2020-06-27)El carbono negro (CN) es un contaminante atmosférico producido de forma natural y como resultado de la combustión incompleta de combustibles fósiles, biocombustibles y biomasa. La región Paso del Norte (México-Estados ... -
Implementación de diagramas de tortuga para el cumplimiento de la norma ISO 9001:2015 / TL 9000:2016
(2020-06-30)La norma ISO 9001:2015 o TL 9000:2016 busca en su apartado 4.4.1 desarrollar una parte del contexto organizacional, por lo que las empresas deben desarrollar una metodología adecuada para el cumplimiento ... -
Implementación de mejoras en el proceso de pruebas de limpieza de producto automotriz
(2020-06-30)El producto bajo estudio en el presente artículo es un arnés automotriz cuya condición crítica de calidad está dada por la limpieza interna de sus componentes, dado que esto permite garantizar el buen funcionamiento del ...