Browsing by Author "Pasciak, Joseph E."
Now showing items 1-19 of 19
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Chiu, Pei-Chen (Texas A&M University, 2006-08-16)This thesis presents an adaptive excitation controller of power systems. The control law is derived by using model reference adaptive control (MRAC) or adaptive pole placement control (APPC) and an equilibrium tracking ...
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Gopalakrishnan, Jayadeep; Pasciak, Joseph E.; Demkowicz, Leszek F. (SIAM Journal on Numerical Analysis, 2004)
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Kim, Seungil (2010-01-14)We consider computation of resonances in open systems and acoustic scattering problems. These problems are posed on an unbounded domain and domain truncation is required for the numerical computation. In this paper, a ...
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Analysis of finite element approximation and iterative methods for time-dependent Maxwell problems Zhao, Jun (Texas A&M University, 2004-09-30)In this dissertation we are concerned with the analysis of the finite element method for the time-dependent Maxwell interface problem when Nedelec and Raviart-Thomas finite elements are employed and preconditioning ...
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Approximation and interpolation employing divergence-free radial basis functions with applications Lowitzsch, Svenja (Texas A&M University, 2004-09-30)Approximation and interpolation employing radial basis functions has found important applications since the early 1980's in areas such as signal processing, medical imaging, as well as neural networks. Several ...
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da Silva Soares, Joao Filipe (Texas A&M University, 2008-10-10)Percutaneous transluminal balloon angioplasty followed by drug-eluting stent implantation has been of great benefit in coronary applications, whereas in peripheral applications, success rates remain low. Analysis of healing ...
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Pasciak, Joseph E.; Vassilevski, Panayot S. (SIAM Journal on Scientific Computing, 2008)
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Alajo, Ayodeji Babatunde (2011-08-08)The closure of the nuclear fuel cycle is a topic of interest in the sustainability context of nuclear energy. The implication of such closure includes considerations of nuclear waste management. This originates from the ...
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Wang, Delin (2012-07-16)This dissertation addresses the accuracy of a-posteriori error estimators for finite element solutions of problems with high orthotropy especially for cases where rather coarse meshes are used, which are often encountered ...
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Gopalakrishnan, Jayadeep; Pasciak, Joseph E. (SIAM Journal on Numerical Analysis, 2000)
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Pasciak, Joseph E.; Wang, Yanqiu (SIAM Journal on Numerical Analysis, 2006)
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Kim, Chisup; Lazarov, Raytcho D.; Pasciak, Joseph E.; Vassilevski, Panayot S. (SIAM Journal on Numerical Analysis, 2001)
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Copeland, Dylan Matthew (Texas A&M University, 2006-08-16)We develop negative-norm least-squares methods to solve the three-dimensional Maxwell equations for static and time-harmonic electromagnetic fields in the case of axial symmetry. The methods compute solutions in a ...
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Zhu, Liyun (2020-11-05)A nonlinear three-dimensional finite element numerical code, called RISER3D, has been developed to perform the static, eigenvalue, and dynamic analyses for slender structures such as beams and marine risers. Distinction ...
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Lei, Wenyu (2018-05-22)The negative powers of an elliptic operator can be approximated via its Dunford-Taylor integral representation, i.e. we approximate the Dunford-Taylor integral with an exponential convergent sinc quadrature scheme and ...
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Wang, Yanqiu (Texas A&M University, 2005-11-01)In this dissertation, we study the mixed finite element method for the linear plane elasticity problem and iterative solvers for the resulting discrete system. We use the Arnold-Winther Element in the mixed finite ...
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Trenev, Dimitar Vasilev (2011-02-22)In this dissertation we describe a coordinate scaling technique for the numerical approximation of solutions to certain problems posed on unbounded domains in two and three dimensions. This technique amounts to introducing ...
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Ambartsoumian, Gaik (2009-06-02)The spherical Radon transform (SRT) integrates a function over the set of all spheres with a given set of centers. Such transforms play an important role in some newly developing types of tomography as well as in several ...
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Nam, Haewon (Texas A&M University, 2004-09-30)Ultrasound-modulated optical tomography is modeled by a linear integral equation and an inverse problem involving a diffusion equation in n spatial dimensions, n=2, 3. Based on measured data, the optical absorption ...