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Uso da Transformada de Kirchhoff e Funções de Green para solução analítica de problemas inversos não lineares em condução de calorUse of Kirchhoff's Transform and Green's Functions for analytical solution of nonlinear inverse heat conduction problems
(Universidade Federal de UberlândiaBrasilPrograma de Pós-graduação em Engenharia Mecânica, 2020)
Simultaneous source and attenuation reconstruction in SPECT using ballistic and single scattering data
(IOS Press, 2015)
In medical single-photon emission computed tomography (SPECT) imaging, we seek to simultaneously obtain the internal radioactive sources and the attenuation map using not only ballistic measurements but also first-order ...
Optimization of non-linear gravity models through generalized simulated annealing
(1998)
In this paper we apply the generalized simulated annealing (GSA) approach to the inversion of gravity data for 2-D and 3-D density distributions. We consider a modeling process where the input is the vector of model ...
Estimación en parámetros en problemas inversos
(2014-05)
En esta tesis se estudian problemas de optimización cuyas restricciones son ecuaciones en derivadas parciales parabólicas. En el primer caso se estima el coeficiente de difusión, correspondiente a un problema de difusión ...
The Calderon problem for quasilinear elliptic equations
(Elsevier, 2020)
In this paper we show uniqueness of the conductivity for the quasilinear Calderon's inverse problem. The nonlinear conductivity depends, in a nonlinear fashion, of the potential itself and its gradient. Under some structural ...
Non linear second order partial differential equations as generalized inverse moment problems
(Taylor & Francis, 2018-03)
General forms for non linear elliptic, hyperbolic and parabolic partial differential equations are considered. For all these we present a general procedure that transforms they into a Fredholm integral equation of the first ...
A hybrid Particle Swarm Optimization - Simplex algorithm (PSOS) for structural damage identification
(ELSEVIER SCI LTD, 2009)
This study proposes a new PSOS-model based damage identification procedure using frequency domain data. The formulation of the objective function for the minimization problem is based on the Frequency Response Functions ...
Source time reversal (STR) method for linear elasticity
(Elsevier Ltd, 2019)
© 2018 Elsevier Ltd We study the problem of source reconstruction for a linear elasticity problem applied to seismicity induced by mining. We assume the source is written as a variable separable function f(x)g(t). We first ...
Inverse Modeling of Moving Average Isotropic Kernels for Non-parametric Three-Dimensional Gaussian Simulation
(Springer, 2016)
Moving average simulation can be summarized as a convolution between a spatial kernel and a white noise random field. The kernel can be calculated once the variogram model is known. An inverse approach to moving average ...