Results 11 to 20 of about 7,842 (105)

Bi₂Te₃ Thin Films Deposited by the Combination of Bi and Te Plasmas in a PLD Process. [PDF]

Micromachines (Basel), 2023
Bismuth telluride thin films were grown by pulsed laser deposition by implementing a novel method that combines both Te and Bi plasmas resulting from the laser ablation of individual Bi and Te targets. Furthermore, the mean kinetic ion energy and density
Reyes-Verdugo LA, Gutiérrez-Lazos CD, Santos-Cruz J, Chávez-Chávez A, Quiñones-Galván JG.   +4 more
europepmc   +2 more sources

Optical Sensing Using Fiber-Optic Multimode Interference Devices: A Review of Nonconventional Sensing Schemes. [PDF]

Sensors (Basel), 2021
We review fiber-based multimode interference (MMI) devices with a particular focus on optical fiber-based sensing applications. The present review complements a recently published, extensive review where the sensing of conventional physical variables ...
Guzmán-Sepúlveda JR, Guzmán-Cabrera R, Castillo-Guzmán AA.   +2 more
europepmc   +2 more sources

Prevalencia de ansiedad matemática en universitarios

Nova Scientia, 2023
Los datos presentados a continuación son el resultado de una investigación orientada a describir y comparar el índice de ansiedad matemática en estudiantes universitarios de diferentes áreas de conocimiento, así como su comorbilidad con los rasgos de ...
Samuel Zamora-Lugo, Martín Cadena-Barajas, Alessio Franci, Tamara Cibrian-Llanderal   +3 more
doaj   +1 more source

Robust Flatness Tracking Control for the “DC/DC Buck Converter‐DC Motor” System: Renewable Energy‐Based Power Supply

Complexity, Volume 2021, Issue 1, 2021., 2021
The design of a robust flatness‐based tracking control for the DC/DC Buck converter‐DC motor system is developed in this paper. The design of the control considers the dynamics of a renewable energy power source that plays the role of the primary power supply associated with the system.
Ramón Silva-Ortigoza, Alfredo Roldán-Caballero, Eduardo Hernández-Márquez, José Rafael García-Sánchez, Magdalena Marciano-Melchor, Victor Manuel Hernández-Guzmán, Gilberto Silva-Ortigoza, Cutberto Romero Mel ndez   +7 more
wiley   +1 more source

FPGA Realization and Lyapunov–Krasovskii Analysis for a Master‐Slave Synchronization Scheme Involving Chaotic Systems and Time‐Delay Neural Networks

Mathematical Problems in Engineering, Volume 2021, Issue 1, 2021., 2021
In this paper, the trajectory tracking control and the field programmable gate array (FPGA) implementation between a recurrent neural network with time delay and a chaotic system are presented. The tracking error is globally asymptotically stabilized by means of a control law generated from the Lyapunov–Krasovskii and Lur’e theory. The applicability of
J. Perez-Padron, C. Posadas-Castillo, J. Paz-Perez, E. Zambrano-Serrano, M. A. Platas-Garza, Adel Ouannas   +5 more
wiley   +1 more source

Patentes como indicador de capacidades para la universidad emprendedora: el caso del IPN

Entreciencias: Diálogos en la Sociedad del Conocimiento, 2023
Objetivo: identificar la capacidad de emprendimiento del Instituto Politécnico Nacional a través del registro de patentes. Diseño metodológico: se identifican campos de conocimiento y unidades académicas involucradas en invenciones patentadas a partir
Rubén Oliver Espinoza, Diana Priscila Estrella Santiago, Rigoberto Arroyo-Cortez   +2 more
doaj   +1 more source

Evaporation From Unsaturated Soils as a Function of the Air and Soil Sides of the Land Surface

Water Resources Research, Volume 56, Issue 12, December 2020., 2020
Abstract A theoretical framework for computing the evaporation from unsaturated soils is presented and validated based on laboratory experiments that were conducted in an uncontrolled environment where forcing variables vary in time according to diurnal meteorological cycles. This theory introduces a dimensionless number that controls the ratio between
Pedro de Amesti, Alberto de la Fuente, Francisco Suárez   +2 more
wiley   +1 more source

Flavor changing neutral current decays $$t\rightarrow c X$$ t→cX ($$X=\gamma ,\,g,\, Z,\, H$$ X=γ,g,Z,H ) and $$t\rightarrow c{{\bar{\ell }}}\ell $$ t→cℓ¯ℓ ($$\ell =\mu ,\,\tau $$ ℓ=μ,τ ) via scalar leptoquarks

European Physical Journal C: Particles and Fields, 2019
The flavor changing neutral current decays $$t\rightarrow c X$$ t→cX ($$X=\gamma ,\,g,\, Z,\, H$$ X=γ,g,Z,H ) and $$t\rightarrow c{{\bar{\ell }}}\ell $$ t→cℓ¯ℓ ($$\ell =\mu ,\,\tau $$ ℓ=μ,τ ) are studied in a renormalizable scalar leptoquark (LQ) model ...
A. Bolaños, R. Sánchez-Vélez, G. Tavares-Velasco   +2 more
doaj   +1 more source

Cherenkov Emission Generated by a Modulated Source in 2D Dispersive Photonic Crystal Slabs

Advances in Materials Science and Engineering, Volume 2020, Issue 1, 2020., 2020
This work presents a systematic numerical study of Cherenkov optical radiation generated by a modulated source that moves with uniform velocity on a two‐dimensional (2D) photonic crystal (PCr) slab surface. We apply the FDTD technique with emphasis on the dispersion properties of the periodic medium to perform our numerical analysis.
Erika Martínez-Sánchez, Gennadiy Burlak, Carlos Rodríguez-Garcia, Marisol Gallardo-Heredia, Ulises Avila-López, Stefano Bellucci   +5 more
wiley   +1 more source

CdTe:Sn thin films deposited by the simultaneous laser ablation of CdTe and Sn targets

Materials Research Express, 2020
CdTe:Sn thin films were grown by pulsed laser deposition on glass substrates at room temperature. The study of the changes in the chemical, structural and optical properties of the films as a function of the density of Sn ions calculated from Langmuir ...
L P Rivera, E García, D Cardona, A Pérez-Centeno, E Camps, M A Santana-Aranda, G Gómez-Rosas, F de Moure-Flores, A Chávez-Chávez, J G Quiñones-Galván   +9 more
doaj   +1 more source