Results 41 to 50 of about 1,615,023 (235)

Inversión aproximada de matrices en sistemas Massive MIMO correlados en tiempo o frecuencia [PDF]

, 2018
Massive multiple-input multiple-output (MIMO) is expected to be one of the keys in 5G. In this technology, the base station is equipped with a big number of antennas serving multiple users simultaneously to improve spectral efficiency, coverage, and ...
Cobos Morales, Óscar, Entrambasaguas-Muñoz, José Tomás, López Martínez, Francisco Javier, Martos-Naya, Eduardo, Soldado Guerrero, Rafael   +4 more
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Assessing the evidence for treating developmental plasticity and phenotypic flexibility as different phenomena

Functional Ecology, Volume 39, Issue 11, Page 2949-2961, November 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Phenotypic plasticity has long played a central role in eco‐evolutionary theory, but it was not until 20 years ago that it was proposed that the term encompasses two distinct phenomena—developmental plasticity and phenotypic flexibility. While this terminology has since
Maria Stager, Jonathan P. Velotta, Zachary A. Cheviron, Nathan R. Senner   +3 more
wiley   +1 more source

Application of Wignner-Ville distribution to identify anomalies in GPR profiles [PDF]

, 2012
Con base en la Distribución de Wigner-Ville(WVO) se realizó un análisis en tiempo y frecuencia de datos obtenidos con el Radar de Penetración Terrestre (GPR), basado en el estudio de la descomposición de la señal espectral.
Chávez, René E., Cámara Moral, María Encarnación, Elizondo, Martha Angélica, Tejero, Andrés   +3 more
core   +1 more source

Pixelated pathologies: Camera trapping as a tool for monitoring wildlife health

Journal of Applied Ecology, Volume 62, Issue 11, Page 2894-2913, November 2025.
Given the increasing emergence of diseases, some with conservation and public health implications, improving and expanding wildlife health surveillance strategies is imperative. Camera trapping is particularly relevant for detecting new outbreaks, monitoring high‐risk zones and evaluating risk mitigation measures. Abstract Camera trapping has become an
Patricia Barroso, Pablo Palencia
wiley   +1 more source

Moth Communities Reveal High Stability Despite Ongoing Compositional Shifts Over Five Years Following Hurricane Disturbance

Ecology and Evolution, Volume 15, Issue 10, October 2025.
We examined the temporal dynamics and ecological stability of tropical forest moth communities using a unique dataset spanning 6 months before and up to 5 years after two extreme hurricanes. While abundance and richness recovered within 2 years, species composition continued to shift, indicating ongoing reassembly with a directional trajectory toward ...
Aura M. Alonso‐Rodríguez, Pablo E. Gutiérrez‐Fonseca, Scott E. Miller, Taylor H. Ricketts   +3 more
wiley   +1 more source

Modelos de Respuesta de la Frecuencia para el Sistema Nacional Interconectado Ecuatoriano

Revista Técnica Energía
En el presente trabajo se presenta una metodología, basada en modelos de repuesta de la frecuencia, para estimar el valor mínimo o máximo -nadir- que alcanza la frecuencia cuando en el sistema eléctrico de potencia se presenta un desbalance generación –
Nelson Granda, Karen Paguanquiza
doaj   +1 more source

Uso de la técnica de colocación de una cinta suburetral transobturatriz en la histerectomía vaginal como tratamiento de la incontinencia urinaria de esfuerzo femenina

Acta Médica Peruana, 2017
Objetivo. El presente estudio pretende describir la experiencia del Hospital Nacional Arzobispo Loayza (HNAL) con la técnica de colocación de una cinta suburetral transobturatriz (transobturatriz tape, tot) en la histerectomía vaginal (HV ) como ...
Segundo Tapia-Bernal
doaj   +1 more source

Validación experimental de un modelo de músculo activado de forma artificial [PDF]

, 2014
Postprint (published ...
Alonso, Francisco Javier, Cuadrado Aranda, Javier, Font Llagunes, Josep Maria, Lugrís Armesto, Urbano, Melo, P. Luzio, Romero, Francisco   +5 more
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Assessing limits of sustainable seed harvest in wild plant populations

Conservation Biology, Volume 39, Issue 5, October 2025.
Abstract Seed harvesting from wild plant populations is key for ecological restoration, but it may threaten the persistence of the source populations. Consequently, several countries have set guidelines limiting the proportions of harvestable seeds. However, these guidelines are inconsistent and lack a solid empirical basis.
Anna Bucharova, Oliver Bossdorf, J. F. Scheepens, Roberto Salguero‐Gómez   +3 more
wiley   +1 more source

Implementación digital de un doble lazo de control tensión/corriente para el control de inversores de potencia embarcables en aviones [PDF]

, 2010
En este artículo se presenta el control digital de un inversor de potencia embarcable en aviones basado en el control de un PWM con una modulación unipolar del tipo rama lenta – rama rápida. En este caso, la rama lenta tiene una frecuencia de 400Hz (
Alou Cervera, Pedro, Cobos Márquez, José Antonio, Duret, Benoit Alexandre, García Suárez, Oscar, Meneses Herrera, David, Moreno González, Félix Antonio, Oliver Ramírez, Jesús Angel   +6 more
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