Zobrazeno 1 - 10
of 762
pro vyhledávání: '"Ervin, K."'
One way to study the spread of disease is through mathematical models. The most successful models compartmentalize the host population according to their infectious stage, e.g., susceptible (S), infected (I), exposed (E), and recovered (R). The compo
Externí odkaz:
http://arxiv.org/abs/2409.15333
Autor:
Voltarelli, Leonardo G. J. M., Pessa, Arthur A. B., Zunino, Luciano, Zola, Rafael S., Lenzi, Ervin K., Perc, Matjaz, Ribeiro, Haroldo V.
Publikováno v:
Chaos 34, 053130 (2024)
Permutation entropy and its associated frameworks are remarkable examples of physics-inspired techniques adept at processing complex and extensive datasets. Despite substantial progress in developing and applying these tools, their use has been predo
Externí odkaz:
http://arxiv.org/abs/2403.13122
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:
Gabrick, Enrique C., Sayari, Elaheh, de Souza, Diogo Leonai Marques, Borges, Fernando da Silva, Trobia, José, Lenzi, Ervin K., Batista, Antonio M.
This work studies the SIS model extended by fractional and fractal derivatives. We obtain explicit solutions for the standard and fractal formulations; for the fractional case, we study numerical solutions. As a real data example, we consider the Bra
Externí odkaz:
http://arxiv.org/abs/2309.06209
Autor:
Gabrick, Enrique C., Sales, Matheus R., Sayari, Elaheh, Trobia, José, Lenzi, Ervin K., Borges, Fernando da S., Szezech Jr., José D., Iarosz, Kelly C., Viana, Ricardo L., Caldas, Iberê L., Batista, Antonio M.
In this work, we analyze the effects of fractional derivatives in the chaotic dynamics of a cancer model. We begin by studying the dynamics of a standard model, {\it i.e.}, with integer derivatives. We study the dynamical behavior by means of the bif
Externí odkaz:
http://arxiv.org/abs/2309.04446
Publikováno v:
Commun. Phys. 6, 244 (2023)
Heterogeneous media diffusion is often described using position-dependent diffusion coefficients and estimated indirectly through mean squared displacement in experiments. This approach may overlook other mechanisms and their interaction with positio
Externí odkaz:
http://arxiv.org/abs/2308.07989
Autor:
Ribeiro, Haroldo V., Lopes, Diego D., Pessa, Arthur A. B., Martins, Alvaro F., da Cunha, Bruno R., Goncalves, Sebastian, Lenzi, Ervin K., Hanley, Quentin S., Perc, Matjaz
Publikováno v:
Chaos, Solitons & Fractals 172, 113579 (2023)
Recent advances in deep learning methods have enabled researchers to develop and apply algorithms for the analysis and modeling of complex networks. These advances have sparked a surge of interest at the interface between network science and machine
Externí odkaz:
http://arxiv.org/abs/2304.08457
Autor:
Lopes, Diego D., da Cunha, Bruno R., Martins, Alvaro F., Goncalves, Sebastian, Lenzi, Ervin K., Hanley, Quentin S., Perc, Matjaz, Ribeiro, Haroldo V.
Publikováno v:
Sci. Rep. 12, 15746 (2022)
Recent research has shown that criminal networks have complex organizational structures, but whether this can be used to predict static and dynamic properties of criminal networks remains little explored. Here, by combining graph representation learn
Externí odkaz:
http://arxiv.org/abs/2209.03171
Autor:
Lenzi, Ervin K.1,2 (AUTHOR) eklenzi@uepg.br, Rosseto, Michely P.1 (AUTHOR), Gryczak, Derik W.3 (AUTHOR) derikwilliam.gryczak@gmail.com, Evangelista, Luiz R.4,5,6 (AUTHOR) lre@dfi.uem.br, da Silva, Luciano R.2,7 (NURSE), Lenzi, Marcelo K.8 (AUTHOR) lenzi@ufpr.br, Zola, Rafael S.9 (AUTHOR) rzola1@kent.edu
Publikováno v:
Entropy. Aug2024, Vol. 26 Issue 8, p673. 18p.
It is well-known that the theories of semi-vector spaces and semi-algebras -- which were not much studied over time -- are utilized/applied in Fuzzy Set Theory in order to obtain extensions of the concept of fuzzy numbers as well as to provide new ma
Externí odkaz:
http://arxiv.org/abs/2111.11206