Zobrazeno 1 - 10
of 6 468
pro vyhledávání: '"A, Vilarinho"'
In this paper, we introduce generalized dichotomies for nonautonomous random linear dynamical systems acting on arbitrary Banach spaces, and obtain their complete characterization in terms of an appropriate admissibility property. These generalized d
Externí odkaz:
http://arxiv.org/abs/2410.13697
For small perturbations of linear Random Dynamical Systems evolving on a Banach space and exhibiting a generalized form of trichotomy, we prove the existence of invariant center manifolds, both in continuous and discrete-time. Furthermore, we provide
Externí odkaz:
http://arxiv.org/abs/2408.01204
Autor:
Bessa, Mario, Vilarinho, Helder
Our main goal is to understand the stability of second order linear homogeneous differential equations $\ddot x(t)+\alpha(t)\dot x(t)+\beta(t)x(t)=0$ for $C^0$-generic values of the variable parameters $\alpha(t)$ and $\beta(t)$. For that we embed th
Externí odkaz:
http://arxiv.org/abs/2404.02066
Autor:
Ullah, Asad, Vilarinho, Helder
We extend the results of [Ullah, A., Vilarinho, H,.: Statistical properties of dynamical systems via induced weak Gibbs Markov maps. arXiv:2311.17531 (2023)] by considering larger classes of observables. More precisely, we obtain estimates on the dec
Externí odkaz:
http://arxiv.org/abs/2403.09528
Two Displacive Ferroelectric Phase Transitions in Multiferroic Quadruple Perovskite $BiMn_{7}O_{12}$
Autor:
Maia, A., Kempa, M., Bovtun, V., Vilarinho, R., Kadlec, C., Moreira, J. Agostinho, Belik, A. A., Proschek, P., Kamba, S.
We report on the microwave, terahertz (THz), infrared and Raman spectroscopic studies of $BiMn_{7}O_{12}$ ceramics, shedding more light into the nature of two structural phase transitions and their possible relation with ferroelectricity in this comp
Externí odkaz:
http://arxiv.org/abs/2401.02808
Autor:
Maia, A., Vilarinho, R., Proschek, P., Lebeda, M., Mihalik jr., M., Mihalik, M., Manuel, P., Khalyavin, D. D., Kamba, S., Moreira, J. Agostinho
The correlation between static magnetoelectric coupling and magnetic structure was investigated in $TbMn_{0.98}Fe_{0.02}O_{3}$ with magnetic field up to 8 T and down to 2 K. Single-crystal neutron diffraction experiments reveal a substantial increase
Externí odkaz:
http://arxiv.org/abs/2401.02802
Autor:
Maia, A., Vilarinho, R., Kadlec, C., Lebeda, M., Mihalik, Jr., M., Zentková, M., Mihalik, M., Moreira, J. Agostinho, Kamba, S.
Publikováno v:
Phys. Rev. B 107, 104410 (2023)
We report a comprehensive study of the low-level substitution of Mn$^{3+}$ by Fe$^{3+}$ effect on the static and dynamic magnetoelectric coupling in TbMn$_{1-x}$Fe$_x$O$_3$ ($x=0$, 0.02 and 0.04). The cationic substitution has a large impact on the b
Externí odkaz:
http://arxiv.org/abs/2303.07029
Autor:
Ana Caroline Freitas Caetano de Sousa, João Augusto Rodrigues Alves Diniz, Igor Renno Guimarães Lopes, Carlos Eduardo Vale Rebouças, Jael Soares Batista, Juliana Fortes Vilarinho Braga, Moacir Franco de Oliveira
Publikováno v:
Medicina Veterinária, Vol 18, Iss 4 (2024)
Considered the largest wild bird in South America, the Greater Rhea is a ratite endowed with great zootechnical value and scientific importance. Understanding the pathologies that may affect these animals is necessary since they are kept in captivity
Externí odkaz:
https://doaj.org/article/fc54f45a04ea47c8a8b7ec7748b1e76c
Autor:
Arthur Pinheiro de Araújo Costa, Ricardo Choren, Daniel Augusto de Moura Pereira, Adilson Vilarinho Terra, Igor Pinheiro de Araújo Costa, Claudio de Souza Rocha Junior, Marcos dos Santos, Carlos Francisco Simões Gomes, Miguel Ângelo Lellis Moreira
Publikováno v:
Cogent Engineering, Vol 11, Iss 1 (2024)
Decision-support methods are crucial for analyzing complex alternatives and criteria in today’s data-driven world. This Systematic Literature Review (SLR) explores and synthesizes knowledge about decision support methodologies that integrate Multic
Externí odkaz:
https://doaj.org/article/120556b59f504cf0bd95fe2a08ac8c32
Publikováno v:
Conimbriga, Vol 63 (2024)
Following a complementary non-invasive analysis including satellite and aerial imagery, as well as UAV-based photogrammetric and LiDAR surveys, this paper presents and discusses the Roman military evidence identified at Alto do Golado (São Pedro do
Externí odkaz:
https://doaj.org/article/0a9cfd6d73d9431a8149e4f2dfa3ebbc