Zobrazeno 1 - 10
of 779
pro vyhledávání: '"Caldas, A. L."'
Autor:
Gabrick, Enrique C., Brugnago, Eduardo L., de Moraes, Ana L. R., Protachevicz, Paulo R., da Silva, Sidney T., Borges, Fernando S., Caldas, Iberê L., Batista, Antonio M., Kurths, Jürgen
In this work, effects of constant and time-dependent vaccination rates on the Susceptible-Exposed-Infected-Recovered-Susceptible (SEIRS) seasonal model are studied. Computing the Lyapunov exponent, we show that typical complex structures, such as shr
Externí odkaz:
http://arxiv.org/abs/2409.08293
Autor:
Leal, Bruno B., Lazarotto, Matheus J., Mugnaine, Michele, de Almeida, Alfredo M. Ozorio, Viana, Ricardo L., Caldas, Iberê L.
In nontwist systems, primary shearless curves act as barriers to chaotic transport. Surprisingly, the onset of secondary shearless curves has been reported in a few twist systems. Meanwhile, we found that, in twist systems, the onset of these seconda
Externí odkaz:
http://arxiv.org/abs/2408.10930
Autor:
Sales, Matheus Rolim, Mugnaine, Michele, Leonel, Edson Denis, Caldas, Iberê L., Szezech Jr, José Danilo
An interesting feature in dissipative nonlinear systems is the emergence of characteristic domains in parameter space that exhibit periodic temporal evolution, known as shrimp-shaped domains. We investigate the parameter space of the dissipative asym
Externí odkaz:
http://arxiv.org/abs/2408.07167
We investigate the influence of the finite Larmor radius on the dynamics of guiding-center test particles subjected to an $\mathbf{E} \times \mathbf{B}$ drift in a large aspect-ratio tokamak. For that, we adopt the drift-wave test particle transport
Externí odkaz:
http://arxiv.org/abs/2407.15963
For several decades now it has been known that systems with shearless invariant tori, nontwist Hamiltonian systems, possess barriers to chaotic transport. These barriers are resilient to breakage under perturbation and therefore regions where they oc
Externí odkaz:
http://arxiv.org/abs/2406.19947
Autor:
da Silva, Sidney T., Gabrick, Enrique C., Protachevicz, Paulo R., Iarosz, Kelly C., Caldas, Iberê L., Batista, Antonio M., Kurths, Jürgen
Dengue is a viral vector-borne infectious disease that affects many countries worldwide, infecting around 390 million people per year. The main outbreaks occur in subtropical and tropical countries. We study here the influence of climate on dengue in
Externí odkaz:
http://arxiv.org/abs/2404.05266
Autor:
Souza, Diogo L. M., Borges, Fernando S., Gabrick, Enrique C., Bentivoglio, Lucas E., Protachevicz, Paulo R., Santos, Vagner dos, Viana, Ricardo L., Caldas, Ibere L., Iarosz, Kelly C., Batista, Antonio M., Kurths, Jürgen
Spiral waves are spatial-temporal patterns that can emerge in different systems as heart tissues, chemical oscillators, ecological networks and the brain. These waves have been identified in the neocortex of turtles, rats, and humans, particularly du
Externí odkaz:
http://arxiv.org/abs/2403.00022
Autor:
Gabrick, Enrique C., Brugnago, Eduardo L., de Souza, Silvio L. T., Iarosz, Kelly C., Szezech Jr., José D., Viana, Ricardo L., Caldas, Iberê L., Batista, Antonio M., Kurths, Jürgen
We study three different strategies of vaccination in a SEIRS (Susceptible--Exposed--Infected--Recovered--Susceptible) seasonal forced model, which are: ($i$) continuous vaccination; ($ii$) periodic short time localized vaccination and ($iii$) period
Externí odkaz:
http://arxiv.org/abs/2402.16883
Autor:
Souza, Diogo L. M., Gabrick, Enrique C., Protachevicz, Paulo R., Borges, Fernando S., Trobia, José, Iarosz, Kelly C., Batista, Antonio M., Caldas, Iberê L., Lenzi, Ervin K.
Publikováno v:
Chaos 34 2024
The description of neuronal activity has been of great importance in neuroscience. In this field, mathematical models are useful to describe the electrophysical behaviour of neurons. One successful model used for this purpose is the Adaptive Exponent
Externí odkaz:
http://arxiv.org/abs/2403.00768
Autor:
Mugnaine, Michele, Leal, Bruno B., de Almeida, Alfredo M. Ozorio, Viana, Ricardo L., Caldas, Iberê L.
Isochronous islands in phase space emerge in twist Hamiltonian systems as a response to multiple resonant perturbations. According to the Poincar\'e-Birkhoff theorem, the number of islands depends on the system characteristics and the perturbation. W
Externí odkaz:
http://arxiv.org/abs/2312.12552