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The Land of the Humming Bird: Amateur Radio Station VP4TF
(Unknown, 2011-03-09)
This postcard is a QSL card which was sent by amateur radio operators to confirm two way radio station contact. This particular card was sent from Noel Weatherhead of Carlos Street, Woodbrook and addressed to George Miller ...
Doing passive radio astronomy with a MST/ST System: a fast crosscorrelation algorithm
(1995)
There are not too many antennas in the VHF range in the world dedicated to radio astronomy. ST, and specially MST, radars require and have large antenna apertures which could also be used for radio astronomical observations. ...
Construcción aproximada de las trayectorias de las ondas cortas de radio en una ionosfera con gradientes horizontales débiles
(1984)
Se construyen las trayectorias de las ondas decamétricas en la región ecuatorial, mediante un desarrollo asintótico basado en la pequeñez relativa de los gradientes horizontales. Las trayectorias así construidas se comparan ...
Modelo de uso dos canais de comunicação do controle de trafego aéreo
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Engenharia Elétrica e Informática IndustrialUTFPR, 2015-11-06)
The knowledge about the usage of the communications resorces used by the air traffic service provider can be usefull to design the networks needed to transport voice signal between the air traffic provider and remote radio ...
Driving Influences of the Doppler Flash Observed by SuperDARN HF Radars in Response to Solar Flares
(American Geophysical Union, 2022-06)
Sudden enhancement in high-frequency absorption is a well-known impact of solar flare-driven Short-Wave Fadeout (SWF). Less understood, is a perturbation of the radio wave frequency as it traverses the ionosphere in the ...
A system for environmental monitoring of hydroelectric reservoirs in Brazil
(Instituto de Pesquisas Ambientais em Bacias Hidrográficas, 2014)
A system for environmental monitoring of hydroelectric reservoirs in BrazilSistema para monitoramento ambiental de reservatórios hidrelétricos no Brasil
(Instituto de Pesquisas Ambientais em Bacias Hidrográficas, 2014)
Sistema de control automático para el reconocimiento y clasificación de residuos reciclables (plástico, vidrio, papel y metal) para un punto ecológico
(Facultad de IngenieríaIngeniería Electrónica y Telecomunicaciones, 2018)
En el presente trabajo de grado se realiza el análisis, diseño, implementación y pruebas de un sistema de control automático para el reconocimiento y clasificación de residuos sólidos reciclables (platico, vidrio, papel y ...
A system for environmental monitoring of hydroelectric reservoirs in Brazil
(Instituto de Pesquisas Ambientais em Bacias Hidrográficas, 2013-04-01)
Environmental monitoring of aquatic systems is an important tool to support policy makers and environmental managers' decisions. Long-term, continuous collection of environmental data is fundamental to the understanding ...
Efecto de los dispositivos de emisión de microondas, radiofrecuencia no ablativa y ultrasonido microfocalizado en el tratamiento de la hiperhidrosis primaria revisión sistemática de la literatura
(Universidad del RosarioEspecialización en Medicina Estética y laserFacultad de Medicina, 2016)
Medical background and objectives: Hyperhidrosis primarily affects 2,8% of the American population. It is a condition that makes an impact on the social development of the individuals affected thus provoking a social phobia. ...