Výsledky vyhledávání - "Ricardo Gafeira"

Akademický článek

Autor: Andrés Asensio Ramos, Mark C. M. Cheung, Iulia Chifu, Ricardo Gafeira

Publikováno v: Living Reviews in Solar Physics, Vol 20, Iss 1, Pp 1-89 (2023)

Abstract The application of machine learning in solar physics has the potential to greatly enhance our understanding of the complex processes that take place in the atmosphere of the Sun. By using techniques such as deep learning, we are now in the p

Externí odkaz: https://doaj.org/article/97eff4c7739e4050935fbc2ef60a8aea

Zobrazit plný text záznamu

Plný text ve formátu HTML

Akademický článek

Total Electron Content PCA-NN Prediction Model for South-European Middle Latitudes

Autor: Anna Morozova, Teresa Barata, Tatiana Barlyaeva, Ricardo Gafeira

Publikováno v: Atmosphere, Vol 14, Iss 7, p 1058 (2023)

A regression-based model was previously developed to forecast total electron content (TEC) at middle latitudes. We present a more sophisticated model using neural networks (NN) instead of linear regression. This regional model prototype simulates and

Externí odkaz: https://doaj.org/article/d0f9bae0431b4d18b22845a3f1ee3143

Zobrazit plný text záznamu

Akademický článek

Payload Camera Breadboard for Space Surveillance—Part I: Breadboard Design and Implementation

Autor: Joel Filho, Paulo Gordo, Nuno Peixinho, Rui Melicio, Ricardo Gafeira

Publikováno v: Applied Sciences, Vol 13, Iss 6, p 3682 (2023)

The rapid increase of space debris poses a risk to space activities, so it is vital to develop countermeasures in terms of space surveillance to prevent possible threats. The current Space Surveillance Network is majorly composed of radar and optical

Externí odkaz: https://doaj.org/article/59ac2e421d1a4a47a539a0581148057c

Zobrazit plný text záznamu

Akademický článek

Exploring Magnetic Loops and Serpentine Fields in the Quiet Sun with the GRIS-IFU

Autor: Ryan J. Campbell, Ricardo Gafeira, Mihalis Mathioudakis, C. Quintero Noda, Manuel Collados

Publikováno v: The Astrophysical Journal, Vol 944, Iss 2, p 150 (2023)

Synthetic observations produced from radiative magnetohydrodynamic simulations have predicted that higher polarization fractions in the quiet solar photosphere would be revealed by increasing the total integration time of observations at GREGOR resol

Externí odkaz: https://doaj.org/article/672f9d1561ef4e498d1577f2d4ae6e71

Zobrazit plný text záznamu

Different types of PCA-NN model for TEC with space weather parameters as predictors: advantages and disadvantages of different NN algorithms

Autor: Anna Morozova, Ricardo Gafeira, Teresa Barata, Tatiana Barlyaeva

A PCA-NN model for the total electron content (TEC) for the midlatitudinal region (Iberian Peninsula) presented here uses the principal component analysis (PCA) to decompose TEC variations into different modes and to reconstruct/forecast amplitudes o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ef22e611f77c813649410a79daff58c3
https://doi.org/10.5194/egusphere-egu23-2719