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 4 of 4 for “"Non-stationary characteristics"”.
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AM-FM Analysis of Structural and Functional Magnetic Resonance Images
… goal is to provide a framework for exploring non-stationary characteristics of structural and functional MRI (sMRI and fMRI). First, we provide a comparison framework for the most popular AM-FM methods using different filterbank configurations that includes Gabor, Equirriple and multi-scale …
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Fast order-recursive Hermitian Toeplitz eigenspace techniques for array processing
… a number of independent, structurally identical, non-linear problems is solved in parallel. The (generalized) eigenvalues are found by quadratically convergent iterative search techniques. Two different search methods, a restricted Newton approach and a rational approximation based technique are …
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Dynamic impact induced by tornadoes through simulations based on two-way wind-structure interactions
… This requires in-depth understanding of the wind characteristics of tornadoes and their wind effects on civil structures, based on which design tornadic wind loading can be properly determined. To achieve this, in this study, Computational Fluid Dynamics (CFD) simulations and Computational …
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Probabilistic optimization of vibrational systems under stochastic excitation containing extreme forcing events
… are restricted to systems with very specific characteristics (e.g. linear or weakly nonlinear systems) or to excitations with very idealized form (e.g. white noise or deterministic periodic). However, modern engineering applications require the analysis of strongly nonlinear systems excited by …