Results 251 to 260 of about 523,446 (278)

Finite Element Methods for Solving Parabolic Inverse Problems

2000
In this paper, we apply the finite element method to identify physical parameters in parabolic initial-boundary value problems. The identifying problem is formulated as a constrained minimization of the L 2-norm error between the observation data and the physical solution to the original system, with the H 1-regularization or BV-regularization.
Yee Lo Keung, Jun Zou
openaire   +1 more source

Application of the finite-element method for the forward and inverse models in optical tomography

Journal of Mathematical Imaging and Vision, 1993
The authors introduce a model for the simulation of photon propagation in a biological tissue. The reconstruction problem is ill-posed because of scatter-dominated photon propagation. The iterative image recovery algorithm described in this paper uses a numerical finite element solution to the diffusion equation. The advantage of the numerical solution
Martin Schweiger, Simon R. Arridge, David T. Delpy   +2 more
openaire   +2 more sources

A hybrid finite element-boundary element method and its application to inverse scattering

Digest on Antennas and Propagation Society International Symposium, 2003
A hybrid finite-element-boundary-element (FE-BE) formulation is applied to direct and inverse electromagnetic scattering from inhomogeneous scatterers. FEM is used in the inhomogeneous region, while BEM is applied to the external unbounded region. This hybrid method has the merits of both methods, i.e.
null Taek-Kyung Lee, null Soo-Young Lee, null Jung-Woong Ra   +2 more
openaire   +1 more source

Apparent Young's modulus of human radius using inverse finite element method

Journal of Biomechanics, 2006
The ability to assess the elastic and failure properties of cortical bone at the radial diaphysis has a clinical importance. A new generation of quantitative ultrasound (QUS) devices and peripheral quantitative computed tomography (p-QCT) has been developed to assess non-invasively bone material and structural properties at the distal radius.
M R, Bosisio, M, Talmant, W, Skalli, P, Laugier, D, Mitton   +4 more
openaire   +2 more sources

Solution of 3D inverse scattering problems by combined inverse equivalent current and finite element methods

Journal of Computational Physics, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Emre Kiliç, Thomas F. Eibert
openaire   +1 more source

Estimation of Motion through Inverse Finite Element Methods with Triangular Meshes

2001
This paper presents algorithms to implement the estimation of motion, focusing on the finite element method as a framework for the development of techniques. The finite element approach has the advantages of a rigorous mathematical formulation, speed of reconstruction, conceptual simplicity and ease of implementation via well-established finite element
Joan V. Condell, Bryan W. Scotney, Philip J. Morrow   +2 more
openaire   +1 more source

Inverse and Feedback Analyses Based on the Finite Element Method

2018
To undertake a successful computation task concerning the construction and operation process of hydraulic structures, one of the mostly concerned obstacles is the limited or incomplete sets of input data. This chapter presents the study on the inverse and feedback analyses for hydraulic structures using the FEM, intended to provide another parametric ...
openaire   +1 more source

3-D resistivity inversion using the finite-element method

Geophysics, 1994
Abstract With the increased availability of faster computers, it is now practical to employ numerical modeling techniques to invert resistivity data for 3-D structure. Full and approximate 3-D inversion methods using the finite-element solution for the forward problem have been developed.
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Solving Inverse PDE by the Finite Element Method

2012
In this Master thesis project solving inverse PDE by the finite element method. An optimal control problems subjected to PDE constraint with boundary conditions is given. Construct the variational form then construct Lagrangian, which defined over whole space.
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Numerical study on the displacement reconstruction of subsea pipelines using the improved inverse finite element method

Ocean Engineering, 2022
Haiming Zhu, Zunfeng Du, You-gang Tang
semanticscholar   +1 more source