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pro vyhledávání: '"Ferreira Ricardo"'
We address the problem of identifying functional interactions among stochastic neurons with variable-length memory from their spiking activity. The neuronal network is modeled by a stochastic system of interacting point processes with variable-length
Externí odkaz:
http://arxiv.org/abs/2411.08205
The amount of debris in orbit has increased significantly over the years. With the recent growth of interest in space exploration, conjunction assessment has become a central issue. One important metric to evaluate conjunction risk is the miss distan
Externí odkaz:
http://arxiv.org/abs/2410.24092
Autor:
Fernandes Sofia, Rodrigues Mariana, Barreiros Catarina, Côrte-Real Hugo, Ferreira Ricardo, Nobre Ângelo
Publikováno v:
The Journal of Critical Care Medicine, Vol 7, Iss 1, Pp 67-72 (2021)
Acute aortic dissection and acute pulmonary embolism are two life-threatening emergencies. The presented case is of an 81-year-old man who has been diagnosed with an acute Stanford type A aortic dissection and referred to a tertiary hospital for surg
Externí odkaz:
https://doaj.org/article/f0baca001bce459da5470e21103a8e31
Autor:
Correia, Filipe F., Ferreira, Ricardo, Queiroz, Paulo G. G, Nunes, Henrique, Barra, Matilde, Figueiredo, Duarte
Software architecture often consists of interconnected components dispersed across source code and other development artifacts, making visualization difficult without costly additional documentation. Although some tools can automatically generate arc
Externí odkaz:
http://arxiv.org/abs/2407.17990
With the increase in the number of active satellites and space debris in orbit, the problem of initial orbit determination (IOD) becomes increasingly important, demanding a high accuracy. Over the years, different approaches have been presented such
Externí odkaz:
http://arxiv.org/abs/2407.15180
Autor:
Ferreira, Ricardo Z., Muyor, Ángel Gil
In this work, we study the luminosity that results from the conversion of QCD axion particles into photons in the magnetic field of the plasma accreting onto black holes (BHs). For the luminosities to be large two conditions need to be met: i) there
Externí odkaz:
http://arxiv.org/abs/2404.12437
Magnetic tunnel junctions are nanoscale devices which have recently attracted interested in the context of frequency multiplexed spintronic neural networks, due to their interesting dynamical properties, which are defined during the fabrication proce
Externí odkaz:
http://arxiv.org/abs/2402.09114
Unstable domain wall (DW) networks in the early universe are cosmologically viable and can emit a large amount of gravitational waves (GW) before annihilating. As such, they provide an interpretation for the recent signal reported by Pulsar Timing Ar
Externí odkaz:
http://arxiv.org/abs/2401.14331
The evidence for a non-vanishing isotropic cosmic birefringence in recent analyses of the CMB data provides a tantalizing hint for new physics. Domain wall (DW) networks have recently been shown to generate an isotropic birefringence signal in the ba
Externí odkaz:
http://arxiv.org/abs/2312.14104