Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"inverse iteration"”.
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A Multigrid Homotopy Method For Computing Eigenfunctions of Differential Operators With Two-Dimensional Heterogeneity
… involves the combination of the well-known Inverse Iteration with a multigrid homotopy.</p>
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On Solving the Large Sparse Generalized Eigenvalue Problem
… from a constrained optimization approach and an inverse iteration is developed which requires the solution of linear algebraic systems only to the accuracy demanded by a given subspace. The convergence of the method is discussed, and the rate of convergence is improved by using shifting with the …
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Three Dimensional Pseudospectral Self -Consistent Field Approximation
… energy range selector, which amounts to tempered inverse iteration. The starting vectors for Arnoldi are enriched with new randomized components in order to decrease the iteration number and to reduce the chance of missing eigenvectors. The linear systems in the Krylov space generation are solved …
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Multilevel spectral clustering : graph partitions and image segmentation
… partitioning algorithm that incorporates the inverse powering method with greedy local refinement. The combination of the inverse powering method with greedy local refinement ensures that the partition quality of the multilevel method is as good as, if not better than, segmenting the large …
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Zur Approximation elektronischer Wellenfunktionen durch anisotrope Gauß-Funktionen
… precise analysis of the perturbed preconditioned inverse iteration which is an iteration method for the solution of eigenvalue problems. It will be shown that after a derivation of the variant of the Schrödinger equation the iteration can completely operate on Gaussian functions. The hope in doing …
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Uncertainty Quantification in Dynamic Problems With Large Uncertainties
… governing equation. First algorithm is based on inverse iteration method. A modification is suggested to calculate higher eigenvalues and eigenvectors. The above algorithm is applied to both discrete and continuous systems. In continuous systems, the uncertainties are modeled as Gaussian …
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An evaluation of component mode synthesis for modal analysis of finite element models
… of CMS to structural dynamic modification and inverse modification is also studied. These techniques use a baseline modal analysis as a reference point for the modified system dynamics. A generalized CMS formulation for the baseline system is used to derive a linear-equivalent perturbation …