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Lagrangian reduction of generalized nonholonomic systems
(Elsevier Science, 2008-10)
In this paper we study the Lagrangian reduction of generalized nonholonomic systems (GNHS) with symmetry. We restrict ourselves to those GNHS, defined on a configuration space Q, with kinematic constraints given by a general ...
On the local and superlinear convergence of a Secant Modified Linear-Programming-Newton Method
(Springer/Plenum Publishers, 2019-03-15)
We present a superlinearly convergent method to solve a constrained system of nonlinear equations. The proposed procedure is an adaptation of the linear-programming-Newton method replacing the first-order information with ...
An extension of the Dirac and Gotay-Nester theories of constraints for Dirac dynamical systems
(American Institute of Mathematical Sciences, 2014-06)
This paper extends the Gotay-Nester and the Dirac theories of constrained systems in order to deal with Dirac dynamical systems in the integrable case. Integrable Dirac dynamical systems are viewed as constrained systems ...
A derivative-free method for solving box-constrained underdetermined nonlinear systems of equations
(Elsevier Science Inc, 2012-11)
A derivative-free iterative method for solving bound-constrained underdetermined nonlinear systems is presented. The procedure consists of a quasi-Newton method that uses the Broyden update formula and a globalized line ...
Releasing systems for aerospace industry based upon shape memory alloys: Characterization of materials for actuators
(Universidade Federal do Rio de Janeiro, 2018-07)
Releasing and deployment maneuvers carried out during space satellites launching are usually performed by utilizing pyrotechnics loads. However, it is considered convenient to replace this technique by others not requiring ...
An optimization algorithm inspired by musical composition in constrained optimization problemsUn algoritmo de optimización inspirado en composición musical para el problema de optimización con restricciones
(Universidad de Costa Rica, Centro de Investigación en Matemática Pura y Aplicada (CIMPA), 2013)
Adjoint method for a tumor invasion PDE-constrained optimization problem in 2D using adaptive finite element method
(Elsevier Science Inc, 2015-11)
In this paper we present a method for estimating an unknown parameter that appears in a two dimensional non-linear reaction-diffusion model of cancer invasion. This model considers that tumor-induced alteration of ...