Results 1 to 10 of about 107,900 (317)

Error correction algorithm of array time-varying amplitude and phase based on autoencoder

open access: yesXibei Gongye Daxue Xuebao, 2023
As array antennas are widely used in various mobile platforms, the time-varying amplitude and phase error has become an important factor affecting the application of array signal processing technology.
ZHANG Zixuan   +3 more
doaj   +1 more source

Element Configuration Optimization of Hybrid Distributed PA-MIMO Radar System Based on Target Detection

open access: yesLeida xuebao, 2023
This paper establishes a hybrid distributed Phased-Array Multiple-Input Multiple-Output (PA-MIMO) radar system model, which combines coherent processing gain and spatial diversity gain to synergistically improve the target detection performance.
Cheng QI   +4 more
doaj   +1 more source

La importancia del vínculo en la resiliencia familiar durante el Covid-19

open access: yesDEDiCA, 2021
La pandemia global por COVID-19 incidió aún más en la urgencia de preparar a la humanidad para sobrevivir ante situaciones críticas. Los vínculos de afectividad son una fuente para la resiliencia familiar.
Lilia Benítez Corona   +2 more
doaj   +1 more source

Human Rights-Based Approach to Sanitation: An Analysis with a Particular Focus on a Lithuanian Perspective

open access: yesBaltic Journal of Law & Politics, 2023
The article analyses the human rights-based approach to sanitation from theoretical and practical perspectives. The first section of the article briefly introduces the path toward a recognition of sanitation as a human right within the international ...
Keturakienė Airė
doaj   +1 more source

¿Qué respiramos? La construcción de saberes y conciencia ambiental entre la universidad y la escuela secundaria, a través de la extensión universitaria

open access: yesUniversidad en Diálogo, 2021
El objetivo de este trabajo es abordar una problemática ambiental en relación con la salud humana, para responder a la inquietud presentada por estudiantes y docentes de dos escuelas secundarias de la ciudad de San Luis (Argentina).
Andrea Celeste Isaguirre   +1 more
doaj   +1 more source

Superfilamentation in Air [PDF]

open access: yesPhysical Review Letters, 2014
The interaction between a large number of laser filaments brought together using weak external focusing leads to the emergence of few filamentary structures reminiscent of standard filaments, but carrying a higher intensity. The resulting plasma is measured to be one order of magnitude denser than for short-scale filaments.
Point, Guillaume   +8 more
openaire   +4 more sources

Air, Air Everywhere! [PDF]

open access: yesClinical Case Reports, 2020
This chext x-ray (CXR) shows a large right sided pneumothorax with a degree mediastinal shift suggesting tensioning (The CXR you should never see!). Furthermore, features of pneumomediastinum are present including the continuous diaphragm sign, and subcutaneous emphysema around the neck and right side of the ...
Rafiq Kanji   +2 more
openaire   +4 more sources

Lecciones aprendidas en el conflicto de los Balcanes

open access: yesArbor: Ciencia, Pensamiento y Cultura, 2002
Condensado de documentos no clasificados procedentes del Mando Aéreo de Combate del Ejército del Aire El autor ha sabido aquí extraer y condensar, a partir de documentos no clasificados del Mando Aéreo de Combate, una síntesis de las eficiencias ...
Angel de Cózar López
doaj   +1 more source

Savoirs véhiculés par les manuels scolaires français et québécois à propos de l’aire. Une étude comparative

open access: yesAnnales de Didactique et de Sciences Cognitives, 2020
This article presents a comparative study of French and Quebec textbooks on the notion of area. Several research studies have raised students’ difficulties in understanding the concept of area, and recent work suggests studying these difficulties in ...
Nathalie Silvia Anwandter Cuellar   +1 more
doaj   +1 more source

El cielo único europeo, implicaciones para la defensa

open access: yesArbor: Ciencia, Pensamiento y Cultura, 2002
Su autor nos presenta un tema de gran actualidad y que posiblemente deberá ser tratado durante la Presidencia española de la Unión (primer semestre de 2002), a fin de conseguir que el llamado «Cielo Único Europeo» sea una realidad en diciembre de 2004 ...
Enrique Pina Díaz
doaj   +1 more source

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