Results 21 to 30 of about 1,818 (170)

Tecnología en electrónica y tecnología en redes y seguridad informática

open access: yesInventum Ingeniería, Tecnología e Investigación, 2009
Sin resumen.
César García U. Augusto García U.
doaj   +1 more source

Laboratorios virtuales y remotos en electrónica y telecomunicaciones: una revisión técnica en educación

open access: yesVisión Electrónica, 2021
La formación en análisis de circuitos eléctricos y electrónicos es un área fundamental en el proceso de aprendizaje de los futuros profesionales de áreas relacionadas con la electrónica y las telecomunicaciones, por lo tanto, la preparación en el saber ...
Néstor Javier Rodríguez-García   +2 more
doaj   +1 more source

Ars Electronica: visions de futur

open access: yes, 2007
Ars Electronica, el festival d'art, tecnologia i societat que té lloc a Linz (Àustria), va celebrar l'any 2004 el vint-i-cinquè aniversari. Sota el lema "Timeshift" ['salt temporal'], el simposi principal d'aquest esdeveniment es va centrar tant en la ...
Pau Waelder
core   +1 more source

La contratación administrativa electrónica

open access: yesCivilizar, 2015
Este artículo pretende describir la evolución de la contratación administrativa electrónica en Colombia tomando como referencia el desarrollo de una agenda transnacional que procura la implementación de la tecnología y las comunicaciones en la gestión ...
Juan Pablo Sarmiento   +2 more
doaj   +3 more sources

Editorial

open access: yesPublicaciones e Investigación, 2016
De la tecnología se afirma que es la aplicación práctica del conocimiento; partiendo de esta acepción, se puede asegurar que en casi todas las actividades diarias que realizamos está implícita la utilización de un dispositivo tecnológico y, dentro del ...
Nelly Morales Pedraza
doaj   +1 more source

Physiological and Sleep Profiles in Insomnia, OSA and COMISA: A Comparative Study in Portugal and Spain

open access: yesJournal of Sleep Research, EarlyView.
ABSTRACT Insomnia and obstructive sleep apnea (OSA) are common sleep disorders that often co‐occur as comorbid insomnia and sleep apnea (COMISA), worsening health outcomes. This study characterized and compared the physiological and sleep profiles of insomnia, OSA and COMISA in population‐based datasets from Portugal (n = 147) and Spain (n = 264 ...
Margarida Carvalho   +9 more
wiley   +1 more source

On the Feasibility of Implementing a Four-Quadrant CMOS Analog Multiplier Using Only Digital Inverter Standard-Cells as Building Blocks

open access: yesIEEE Access
This work introduces the first four-quadrant CMOS analog multiplier circuit built entirely from digital inverter standard cells, without requiring any analog transistor-sizing methodologies.
Gregorio Zamora-Mejia   +10 more
doaj   +1 more source

Photon Recycling–Driven Photodetection Enhancement in Ni(AcO)2–MAPbBr3 Nanocomposite Waveguides

open access: yesNanophotonics, Volume 15, Issue 13, 13 July 2026.
Photon recycling is demonstrated as an effective mechanism to enhance perovskite photodetector performance. A Ni(AcO)2/MAPbBr3 nanocomposite waveguide enables long‐range propagation and reabsorption of photoluminescence photons, increasing photocurrent by ∼60%. Under pulsed excitation, reabsorption of amplified spontaneous emission further enhances the
Sandra Soriano‐Díaz   +6 more
wiley   +1 more source

iSensMex-POT, a Potentiostat Platform for Human Health Applications

open access: yesIEEE Access
This work introduces the iSensMEX-POT platform, a potentiostat-based detection system for conducting cyclic voltammetry measurements. It consists of a mixed-mode application-specific integrated circuit (ASIC) and a user digital interface unit based on ...
Gregorio Zamora-Mejia   +9 more
doaj   +1 more source

Nonlinear optical properties of Au-nanoparticles conjugated with lipoic acid in water [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2014
Gold nanoparticles were chemically conjugated with lipoic acid to control their optical properties. Z-scan and other optical techniques were used to characterize the non-linear behavior of the resulting nanostructured materials. The results show that the
Trejo-Durán M.   +4 more
doaj   +1 more source

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