840 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universidade Federal Rural de PernambucoBR89 papers
- Universidade Federal da ParaíbaBR67 papers
- Universidade Federal de AlagoasBR44 papers
- Universidade Federal de Santa MariaBR41 papers
- Universidade de São PauloBR37 papers
- Centre National de la Recherche ScientifiqueFR34 papers
- University of CalgaryCA31 papers
- Universidade de PernambucoBR26 papers
- University of AkronUS21 papers
- Universidade Federal do Rio Grande do NorteBR19 papers
- École de Technologie SupérieureCA17 papers
- Universidade Estadual de Campinas (UNICAMP)BR17 papers
61 papers · 1 filter
The choice of scaling technique matters for classification performance
Lucas B. V. de Amorim, George D. C. Cavalcanti, Rafael M. O. Cruz
Dataset scaling, also known as normalization, is an essential preprocessing step in a machine learning pipeline. It is aimed at adjusting attributes scales in a way that they all v…
Intensity correlations in the forward four-wave mixing driven by a single pump
A. A. C. de Almeida, M. R. L. da Motta, S. S. Vianna
We study the field intensity fluctuations of two independent four-wave mixing signals generated in a cold rubidium sample as well as the transmission signals. We employ an experime…
Observation of Spin Current Hermiticity
Wibson W. G. Silva, A. R. Rodrigues, José Holanda
The spin Hall effect is one of the most relevant effects in spintronics and the key to conversion from charge current into spin current. We report here a phenomenon, which appears…
Permittivity-asymmetric quasi-bound states in the continuum
Rodrigo Berté, Thomas Weber, Leonardo de S. Menezes +7
Broken symmetries lie at the heart of nontrivial physical phenomena. Breaking the in-plane geometrical symmetry of optical systems allows to access a set of electromagnetic states…
Fermionic spectral walls in kink collisions
João G. F. Campos, Azadeh Mohammadi, Jose M. Queiruga +2
We show that a spectral wall, i.e., an obstacle in the dynamics of a bosonic soliton, which arises due to the transition of a normal mode into the continuum spectrum, exists after…
Understanding Political Divisiveness using Online Participation data from the 2022 French and Brazilian Presidential Elections
Carlos Navarrete, Mariana Macedo, Rachael Colley +8
Digital technologies can augment civic participation by facilitating the expression of detailed political preferences. Yet, digital participation efforts often rely on methods opti…
Expansions for semiclassical conformal blocks
Bruno Carneiro da Cunha, João Paulo Cavalcante
We propose a relation the expansions of regular and irregular semiclassical conformal blocks at different branch points making use of the connection between the accessory parameter…
An experimental analysis from the magnetic interactions in nanowire arrays
Wibson W. G. Silva, Adrielson de A. Dias, Alexandre R. Rodrigues +3
We study the magnetic interactions experimentally in nanostructures of nanowire arrays. The intensity value obtained from the interactions provides information about its magnetic b…
Nonlinear flip-flop quantum walks through potential barriers
F. S. Passos, A. R. C. Buarque
The dynamics of nonlinear flip-flop quantum walk with amplitude-dependent phase shifts with pertubing potential barrier is investigated. Through the adjustment between uniform loca…
Flow structure beneath periodic waves with constant vorticity under normal electric fields
Marcelo V. Flamarion, Tao Gao, Roberto Ribeiro-Jr +1
Waves with constant vorticity and electrohydrodynamics flows are two topics in fluid dynamics that have attracted much attention from scientists for both the mathematical challenge…
Wave transmission and its universal fluctuations in one-dimensional systems with Lévy-like disorder: Schrödinger, Klein-Gordon and Dirac equations
Anderson L. R. Barbosa, Jonas R. F. Lima, Luiz Felipe C. Pereira
We investigate the propagation of waves in one-dimensional systems with Lévy-type disorder. We perform a complete analysis of non-relativistic and relativistic wave transmission su…
Soliton interactions with an external forcing: the modified Korteweg-de Vries framework
Marcelo V. Flamarion, Efim Pelinovsky
The aim of this work is to study asymptotically and numerically the interaction of solitons with an external forcing with variable speed using the forced modified Korteweg-de Vries…
A quantum cosmology approach to cosmic coincidence and inflation
S. Jalalzadeh, A. Mohammadi, D. Demir
This work studies the quantum cosmology of a closed, spatially homogeneous, and isotropic FLRW minisuperspace model with electromagnetic radiation as a matter content. We solve the…
Inflation and fractional quantum cosmology
S. M. M. Rasouli, E. W. Oliveira Costa, P. V. Moniz +1
The Wheeler--DeWitt equation for a flat and compact Friedmann--Lemaître--Robertson--Walker cosmology at the pre-inflation epoch is studied in the contexts of the standard and fract…
Controlling fluid adhesion force with electric fields
Pedro H. A. Anjos, Francisco M. Rocha, Eduardo O. Dias
Developing adhesives whose bond strength can be externally manipulated is a topic of considerable interest for practical and scientific purposes. In this work, we propose a method…
Noncompactified Kaluza--Klein Gravity
S. M. M. Rasouli, S. Jalalzadeh, P. V. Moniz
We present a brief description of noncompactified higher-dimensional theories from the perspective of general relativity. More concretely, the Space-Time-Matter theory, or Induced…
A Comparison of Spatiotemporal Visualizations for 3D Urban Analytics
Roberta Mota, Nivan Ferreira, Julio Daniel Silva +6
Recent technological innovations have led to an increase in the availability of 3D urban data, such as shadow, noise, solar potential, and earthquake simulations. These spatiotempo…
Efficient spin-to-charge interconversion in Weyl semimetal TaP at room temperature
J. B. S. Mendes, R. O. Cunha, S. O. Ferreira +5
In this paper we present spin-to-charge current conversion properties in the Weyl semimetal TaP by means of the inverse Rashba-Edelstein effect (IREE) with the integration of this…
2-D Rayleigh Autoregressive Moving Average Model for SAR Image Modeling
B. G. Palm, F. M. Bayer, R. J. Cintra
Two-dimensional (2-D) autoregressive moving average (ARMA) models are commonly applied to describe real-world image data, usually assuming Gaussian or symmetric noise. However, rea…
Improved Point Estimation for the Rayleigh Regression Model
B. G. Palm, F. M. Bayer, R. J. Cintra
The Rayleigh regression model was recently proposed for modeling amplitude values of synthetic aperture radar (SAR) image pixels. However, inferences from such model are based on t…
Resonance mediated by fermions in kink-antikink collisions
Dionisio Bazeia, João G. F. Campos, Azadeh Mohammadi
We investigate generalizations of the and sine-Gordon models, including interactions with Dirac Fermions. We observe new resonance phenomena by taking the fermion back-reacti…
A Systematic Literature Review on the Impact of Formatting Elements on Code Legibility
Delano Oliveira, Reydne Santos, Fernanda Madeiral +2
Context: Software programs can be written in different but functionally equivalent ways. Even though previous research has compared specific formatting elements to find out which a…
Enlarging the notion of additivity of resource quantifiers
L. F. Melo, Thiago Melo, Fernando Parisio
Whenever a physical quantity becomes essential to the realization of useful tasks, it is desirable to define proper measures or monotones to quantify it. In quantum mechanics, cohe…
On the role of reduced habitat in the phase transition of a stochastic model for seed dispersal
Cristian F. Coletti, Nevena Marić, Pablo M. Rodriguez
Habitat loss is one of the biggest threats facing plant species nowadays. We formulate a simple mathematical model of seed dispersal on reduced habitats to discuss survival of the…