Results 81 to 90 of about 176,214 (202)

DIDACTIC APPLICATIONS OF MULTIMEDIA AND INTERNET SYSTEMS IN DISTANCE EDUCATION

open access: yesRIED: Revista Iberoamericana de Educación a Distancia, 2000
This article purpose is double; one face we t,y to test the New Technologies application building up significant learning through the preparation of multimedia applications using Internet and based on CDROM, and in other face offering to the students and
Manuel-Alonso Castro Gil   +3 more
doaj   +1 more source

Estimación de los Parámetros de Secuencia de un Transformador Trifásico utilizando Métodos de Optimización no Lineal

open access: yesRevista Politécnica, 2020
Resumen: En este documento se presenta la estimación de los parámetros de secuencia: positiva, negativa y cero, de un transformador trifásico de 50 kVA, 6300 - 231/133 V, a partir de mediciones de eventos de fallas monofásicas a tierra y bifásicas a ...
Oscar Cuasapaz   +4 more
doaj   +1 more source

Sistema Electrónico Inteligente para el Control de la Interconexión entre Equipamiento de Generación Distribuida y la Red Eléctrica

open access: yes, 2017
The changes that are taking place in the electricity sector are causing an evolution of grid towards a more intelligent and efficient model known as Smart Grid.
Rafael Real-Calvo   +5 more
semanticscholar   +1 more source

Identifying the exposure of taxonomic, functional, and phylogenetic diversity of steppe birds to renewable energy development

open access: yesConservation Biology, Volume 40, Issue 5, October 2026.
Abstract Biodiversity is globally threatened by human impacts, including land‐use transformation and climate change, which has prompted a rapid transition from fossil fuels to cleaner energy sources, such as photovoltaic (PV) energy. However, utility‐scale PV plants require vast areas and can lead to conflicts with biodiversity conservation, making ...
Pablo Medrano‐Vizcaíno   +10 more
wiley   +1 more source

EFECTOS CUÁNTICOS MACROSCÓPICOS: INCERTIDUMBRE DE MEDICIÓN EN EL SISTEMA JOSEPHSON DEL INTI

open access: yesAnales (Asociación Física Argentina), 2013
El ampere, una de las unidades de base del Sistema Internacional (SI) es mantenido en los Institutos Nacionales de Metrología por medio de dos efectos cuánticos macroscópicos: el efecto Josephson para la tensión eléctrica y el efecto Hall cuántico para ...
R. Iuzzolino   +3 more
doaj  

Cuantificación del ahorro de energía eléctrica en clientes residenciales mediante acciones de gestión de demanda

open access: yes, 2017
espanolColombia enfrento entre 2015 y 2016 uno de los fenomenos de El Nino mas severos de su historia quedando ad-portas de un racionamiento de energia.
F. Martinez, O. Vivas, Y. S. Rosas
semanticscholar   +1 more source

Control de demanda eléctrica aplicando algoritmos genéticos

open access: yesIngeniare : Revista Chilena de Ingeniería, 2017
espanolEl problema del control de la demanda y el consumo de energia en empresas productivas y de servicios constituye una importante oportunidad para la reduccion de los gastos asociados al uso de la energia electrica.
D. B. Vasconcellos   +2 more
semanticscholar   +1 more source

Beyond the breeding grounds: identifying post‐breeding staging areas, corridors and ecological niche of the Lesser Kestrel

open access: yesIbis, Volume 168, Issue 4, Page 1255-1276, October 2026.
The post‐breeding period is a critical yet overlooked phase in the annual cycle of migratory birds, where individuals must resolve competing bioenergetic trade‐offs between recovery from breeding, moult and migratory fuelling. Using GPS data from 54 adult Lesser Kestrels Falco naumanni tracked across Spain, we analysed 76 post‐breeding tracks to ...
Javier Hernández‐Cabello   +5 more
wiley   +1 more source

Infrared Microscopy Imaging of Index-Finger Pads

open access: yesIEEE Access, 2018
In this paper, we present the mid-wave infrared microscopic view of index finger pads of voluntary subjects, an analysis of their thermoregulation response, and a study of their thermal spatial morphology.
Laura A. Viafora   +5 more
doaj   +1 more source

Prospectiva de las energías eólica y solar fotovoltaica en la producción de energía eléctrica

open access: yes, 2017
The increase in the price of fossil fuels and the pollution problems arising from their burning has resulted in the intensification of the use of renewable energy sources to produce electricity.
Aurelio Beltrán-Telles   +3 more
semanticscholar   +1 more source

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