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15 papers · 1 filter
Reversible Transport of Interacting Brownian Ratchets
Rogério M. da Silva, Clécio C. de Souza Silva, Sérgio Coutinho
The transport of interacting Brownian particles in a periodic asymmetric (ratchet) substrate is studied numerically. In a zero-temperature regime, the system behaves as a reversibl…
Reverse rotations in the circularly-driven motion of a rigid body
Fernando Parisio
We study the dynamical response of a circularly-driven rigid body, focusing on the description of intrinsic rotational behavior (reverse rotations). The model system we address is…
Improved estimators for a general class of beta regression models
Alexandre B. Simas, Wagner Barreto-Souza, Andréa V. Rocha
In this paper we consider an extension of the beta regression model proposed by Ferrari and Cribari-Neto (2004). We extend their model in two different ways, first, we let the regr…
Explicit expressions for moments of the beta Weibull distribution
Gauss M. Cordeiro, Alexandre B. Simas, Borko D. Stosic
The beta Weibull distribution was introduced by Famoye et al. (2005) and studied by these authors. However, they do not give explicit expressions for the moments. We now derive exp…
A conjugate for the Bargmann representation
A. D. Ribeiro, F. Parisio, M. A. M. de Aguiar
In the Bargmann representation of quantum mechanics, physical states are mapped into entire functions of a complex variable z*, whereas the creation and annihilation operators $\ha…
Dynamics of driven vortex-antivortex matter in superconducting films with a magnetic dipole array
Cléssio L. S. Lima, Clécio C. de Souza Silva, .
We investigate theoretically vortex-antivortex (v-av) matter moving in thin superconducting films with a regular array of in-plane magnetic dipoles. Our model considers v-av pair c…