Now showing items 441-447 of 447
A comparison of transcription techniques for the optimal control of the International Space Station
The numerical solution of Optimal Control Problems has received much attention over the past few decades. In particular, direct transcription methods have been studied because of their convergence properties for even ...
A survey of discontinuous Galerkin methods for solving the time domain Maxwell's equations
The discontinuous Galerkin (DG) method with different numerical fluxes is applied to the square wave guide problem to avoid spurious modes that arise from the application of standard finite element methods. These numerical ...
Model order reduction and domain decomposition for large-scale dynamical systems
Domain decomposition and model order reduction are both very important techniques for scientific and engineering computing. Their goals are both trying to speed up computations, however by different approaches. Domain ...
Imaging in cluttered acoustic waveguides
We consider an inverse problem for the acoustic scalar wave equation in a cluttered waveguide. The problem is to find the location of sources or scatterers, given measurements of the pressure at a remote array of transducers. ...
Filtering random layering effects for imaging and velocity estimation
Imaging compactly supported reflectors in highly heterogeneous media is a challenging problem due to the significant interaction of waves with the medium which causes considerable delay spread and loss of coherence. The ...
On the parameterization of ill-posed inverse problems arising from elliptic partial differential equations
Electric impedance tomography (EIT) consists in finding the conductivity inside a body from electrical measurements taken at its surface. This is a severely ill-posed problem: any numerical inversion scheme requires some ...