Results 11 to 20 of about 62,006 (260)

La incongruencia del sistema Dual y el sistema clásico de educación superior en los Institutos Tecnológicos

open access: yesRECIE Revista Electrónica Científica de Investigación Educativa, 2023
La presente investigación finca precedentes en sus efectos, que tal vez nadie quiere enfocar o tocar por diferentes cuestiones que no tienen ningún argumento certero o lógico para ahondar o provocar un beneficio en los estudiantes, que en realidad son ...
J. Matilde Martín Vargas Ugalde   +2 more
doaj   +1 more source

Methodology for Tool Wear Detection in CNC Machines Based on Fusion Flux Current of Motor and Image Workpieces

open access: yesMachines, 2023
In the manufacturing industry, computer numerical control (CNC) machine tools are of great importance since the processes in which they are used allow the creation of elements used in multiple sectors. Likewise, the condition of the cutting tools used is
Geovanni Díaz-Saldaña   +5 more
doaj   +1 more source

A Two-Step Strategy for System Identification of Civil Structures for Structural Health Monitoring Using Wavelet Transform and Genetic Algorithms

open access: yesApplied Sciences, 2017
Nowadays, the accurate identification of natural frequencies and damping ratios play an important role in smart civil engineering, since they can be used for seismic design, vibration control, and condition assessment, among others.
Carlos Andres Perez-Ramirez   +6 more
doaj   +1 more source

Un caso de paracoccidioidomicosis en la glándula suprarrenal bilateral

open access: yesRevista Científica Ciencias de la Salud, 2023
La paracoccidioidomicosis es una micosis profunda. La afectación de la glándula suprarrenal es una forma de presentación rara que se asocia hasta un 10 a 15% de las insuficiencias supra renales y en algunas ocasiones puede ser la primera manifestación ...
Brunno Scudeller   +3 more
doaj   +1 more source

Novel End-to-End CNN Approach for Fault Diagnosis in Electromechanical Systems Based on Relevant Heating Areas in Thermography

open access: yesTechnologies
The reliability of electromechanical systems is a critical factor in modern Industry 4.0, as unexpected failures in induction motors or gearboxes can cause costly downtime, productivity losses, and increased maintenance demands.
Gilberto Alvarado-Robles   +4 more
doaj   +1 more source

Mechanical Optimizations with Variable Mesh Size, Using Differential Evolution Algorithm

open access: yesComputers
Structural problems are a common topic among several optimization works; with the use of finite element analysis (FEA), the aim of these works is to improve the mechanical behavior of the distinct elements or bodies involved in these optimization ...
David Robledo-Jimenez   +4 more
doaj   +1 more source

Distribución y caracterización de equipos de salud capacitados a distancia por el Instituto Nacional de Epidemiologia [PDF]

open access: yesRevista Argentina de Salud Pública, 2014
En el artículo se analizan las características de los alumnos que participaron en los cursos a distancia realizados por el Instituto Nacional de Epidemiología entre 2005 y 2012. Se inscribieron 4163 alumnos y se aceptaron 2724 (65,5%).
Elvira B, Calvo   +10 more
doaj  

Enhancing Injector Performance Through CFD Optimization: Focus on Cavitation Reduction

open access: yesComputers
The use of computer-aided engineering (CAE) tools has become essential in modern design processes, significantly streamlining mechanical design tasks. The integration of optimization algorithms further enhances these processes by facilitating studies on ...
Jose Villagomez-Moreno   +4 more
doaj   +1 more source

Methodology for Flicker Estimation and Its Correlation to Environmental Factors in Photovoltaic Generation

open access: yesIEEE Access, 2018
Flicker is a very common power quality disturbance due to the inclusion of photovoltaic (PV) generation on the electric grid. This paper presents a methodology for flicker estimation in a PV generation that fuses multiple signal classification and ...
David A. Elvira-Ortiz   +5 more
doaj   +1 more source

Frequency Analysis of the Railway Track under Loads Caused by the Hunting Phenomenon

open access: yesMathematics, 2022
Hunting is a potentially dangerous phenomenon related to the lateral oscillation of the wheels that impacts the rails and causes the wear of the infrastructure’s components.
Gerardo Hurtado-Hurtado   +4 more
doaj   +1 more source

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