http://repositorio.ufc.br/handle/riufc/170 Sat, 11 Apr 2026 13:11:11 GMT 2026-04-11T13:11:11Z http://repositorio.ufc.br/handle/riufc/49654 Título: Scaling functions for systems with finite range of interaction Autor(es): Sampaio Filho, Cesar Ivan Nunes; Moreira, Francisco George Brady Abstract: We present a numerical determination of the scaling functions of the magnetization, the susceptibility, and the Binder’s cumulant for two nonequilibrium model systems with varying range of interactions.We consider Monte Carlo simulations of the block voter model (BVM) on square lattices and of the majority-vote model (MVM) on random graphs. In both cases, the satisfactory data collapse obtained for several system sizes and interaction ranges supports the hypothesis that these functions are universal. Our analysis yields an accurate estimation of the long-range exponents, which govern the decay of the critical amplitudes with the range of interaction, and is consistent with the assumption that the static exponents are Ising-like for the BVM and classical for the MVM. Tipo: Artigo de Periódico Tue, 01 Jan 2013 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/49654 2013-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/49653 Título: An ab initio explanation of the activation and antagonism strength of an AMPA-sensitive glutamate receptor Autor(es): Martins, Ana Caroline Vieira; Lima Neto, Pedro de; Barroso Neto, Ito Liberato; Cavada, Benildo Sousa; Freire, Valder Nogueira; Caetano, Ewerton Wagner Santos Abstract: We report quantum biochemistry calculations focusing on the binding pocket of the glutamate receptor co-crystallized with agonists (full and partial) and a antagonist. The calculated electronic binding energy follows the order AMPA . glutamate. kainate . DNQX, which explains published experimental data on GluR2 activation and antagonism strength. Tipo: Artigo de Periódico Tue, 01 Jan 2013 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/49653 2013-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/49652 Título: Numerical modeling of the wind flow over a transverse dune Autor(es): Araújo, Ascânio Dias; Parteli, Eric Josef Ribeiro; Poschel, Thorsten; Andrade Júnior, José Soares de; Herrmann, Hans Jürgen Abstract: Transverse dunes, which form under unidirectional winds and have fixed profile in the direction perpendicular to the wind, occur on all celestial objects of our solar system where dunes have been detected. Here we perform a numerical study of the average turbulent wind flow over a transverse dune by means of computational fluid dynamics simulations. We find that the length of the zone of recirculating flow at the dune lee — the separation bubble — displays a surprisingly strong dependence on the wind shear velocity, u*: it is nearly independent of u* for shear velocities within the range between 0.2 m/s and 0.8 m/s but increases linearly with u* for larger shear velocities. Our calculations show that transport in the direction opposite to dune migration within the separation bubble can be sustained if u* is larger than approximately 0.39 m/s, whereas a larger value of u* (about 0.49 m/s) is required to initiate this reverse transport. Tipo: Artigo de Periódico Tue, 01 Jan 2013 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/49652 2013-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/49651 Título: Braess paradox at the mesoscopic scale Autor(es): Sousa, Ariel Adorno de; Chaves, Andrey; Farias, Gil de Aquino; Peeters, Francois Maria Leopold Abstract: We theoretically demonstrate that the transport inefficiency recently found experimentally for branched-out mesoscopic networks can also be observed in a quantum ring of finite width with an attached central horizontal branch. This is done by investigating the time evolution of an electron wave packet in such a system. Our numerical results show that the conductivity of the ring does not necessary improve if one adds an extra channel. This ensures that there exists a quantum analog of the Braess paradox, originating from quantum scattering and interference. Tipo: Artigo de Periódico Tue, 01 Jan 2013 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/49651 2013-01-01T00:00:00Z