Zobrazeno 1 - 10
of 365
pro vyhledávání: '"Jefferson, A. E."'
Autor:
Schrauth, Manuel, Thurn, Yanick, Goth, Florian, Portela, Jefferson S. E., Herdt, Dietmar, Dusel, Felix
HYPERTILING is a high-performance Python library for the generation and visualization of regular hyperbolic lattices embedded in the Poincar\'e disk model. Using highly optimized, efficient algorithms, hyperbolic tilings with millions of vertices can
Externí odkaz:
http://arxiv.org/abs/2309.10844
Autor:
Alfredo Gomes Neto, Jefferson Costa E. Silva, Joabson Nogueira de Carvalho, Deisy Formiga Mamedes, Mylenna Correia de Andrade, Jose Andre da Costa
Publikováno v:
IEEE Access, Vol 12, Pp 21947-21953 (2024)
In this paper, a compact matryoshka DGS using dielectric resonator (DR) is proposed. Despite the use of dielectric resonators to obtain band-stop frequency response not being a new idea, the proposed compact matryoshka DGS is an original contribution
Externí odkaz:
https://doaj.org/article/a05fc456a700416a8fa67ca326094572
Publikováno v:
Phys. Rev. E 100, 062118 (2019)
The Voronoi construction is ubiquitous across the natural sciences and engineering. In statistical mechanics, though, critical phenomena have so far been only investigated on the Delaunay triangulation, the dual of a Voronoi graph. In this paper we s
Externí odkaz:
http://arxiv.org/abs/1907.12494
Despite decades of research, the precise role of topological disorder in critical phenomena has yet to be fully understood. A major contribution has been the work by Barghathi and Vojta, which uses spatial correlations to explain puzzling earlier res
Externí odkaz:
http://arxiv.org/abs/1907.05809
Publikováno v:
Phys. Rev. Research 1, 033061 (2019)
We present a stochastic algorithm for constructing a topologically disordered (i.e., non-regular) spatial lattice with nodes of constant coordination number, the CC lattice. The construction procedure dramatically improves on an earlier proposal [Phy
Externí odkaz:
http://arxiv.org/abs/1907.05040
Autor:
Thamyris da Silva Evangelista, Deisy Formiga Mamedes, Jefferson Costa e Silva, Alexandre Jean René Serres, Alfredo Gomes Neto
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 22, Iss 1, Pp 33-46 (2023)
Abstract This work presents the development of a reconfigurable frequency selective surface (RFSS) for application in the 2400-2483.5 MHz band, standard IEEE 802.11b/g/n (Wi-Fi). The proposed RFSS is based on the four-arms star geometry and PIN diode
Externí odkaz:
https://doaj.org/article/edcf39c4b18a41ee9b9be5cb5e61fc02
Publikováno v:
Micromachines, Vol 15, Iss 4, p 469 (2024)
A review on planar printed structures that are based on Matryoshka-like geometries is presented. These structures use the well-known principle of Matryoshka dolls that are successively nested inside each other. The well-known advantages of the planar
Externí odkaz:
https://doaj.org/article/6c53ebbb35cd4cfeb30fb9f6e7909300
Publikováno v:
Phys. Rev. Lett. 121, 100601 (2018)
In 1974, Harris proposed his celebrated criterion: Continuous phase transitions in $d$-dimensional systems are stable against quenched spatial randomness whenever $d\nu>2$, where $\nu$ is the clean critical exponent of the correlation length. Forty y
Externí odkaz:
http://arxiv.org/abs/1803.08753
Autor:
Alfredo Gomes Neto, Jefferson Costa e Silva, Ianes Barbosa Grécia Coutinho, Saulo Souto Camilo Filho, Danila Araújo Santos, Bruno Lima Cavalcanti de Albuquerque
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 21, Iss 2, Pp 284-293 (2022)
Abstract A Defected Ground Structure, DGS, based on matryoshka geometry is described in this paper. The proposed DGS geometry is outlined and initial design equations are presented. Four prototypes, with resonant frequencies 2.17 GHz, 2.44 GHz, 2.99
Externí odkaz:
https://doaj.org/article/c6af8bb2998844cea119875b4c835244
Publikováno v:
Phys. Rev. E 97, 022144 (2018)
We study the two-dimensional Ising model on a network with a novel type of quenched topological (connectivity) disorder. We construct random lattices of constant coordination number and perform large scale Monte Carlo simulations in order to obtain c
Externí odkaz:
http://arxiv.org/abs/1711.07981