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 16 of 16 for “"eigenanalysis"”.
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Inversion of pulsed NMR data using eigenanalysis
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1993.
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Eigenanalysis solution for quasi birth and death process
… interest. Alternative techniques which employ eigenanalysis have been developed. These techniques are polynomially bounded and yield results very quickly compared to iterative routines. On the other hand, the class of systems to which the eigenanalysis based techniques apply have been somewhat …
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High performance digital signal processing: Theory, design, and applications in finance
… the optimal orthonormal transform. Specifically, eigenanalysis is utilized to determine the KLT basis functions. KLT is a widely employed signal analysis method used in applications including noise filtering of measured data and compression. However, defining KLT basis for a given signal …
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A method for the spatial dynamic simulation of reciprocating compressors using the digital computer
… oriented springs and dampers. Additionally, an eigenanalysis is performed that returns the natural frequencies and modes for the machine. The final step is an interactive postprocessor where the user may examine the results of the eigenanalysis as well as the operating orbit of the machine. A …
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Numerical methods for multiserver discrete time queues with batch Markovian arrivals
… a numerically stable methodology based on eigenanalysis and probability generating function technique has been developed for producing both occupancy and delay moments and distributions for the equilibrium process described above. Feasibility of the methodology is demonstrated through …
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Computer simulation of the Bristol compressor suspension system dynamics
… calculate these matrices are also discussed. An eigenanalysis is performed to calculate the eigenvalue frequencies and eigenvectors for the system. The force analysis is performed to calculate the forcing function in the time domain for the first 40 harmonics. The Fast Fourier Transform method is …
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The analytical force prediction and dynamic response analysis of the Bristol H25A compressor
… for performing different tasks, such as the eigenanalysis, kinematic force computation. displacement/velocity/acceleration prediction, spring-end force calculation and variable-speed motor simulation. The simulation program also features post-processor functions in order to display the …
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Denoising via Empirical Bayesian Pursuit
… the new eigenframe representation. Following the eigenanalysis of the threshold-then-average denoising filter, a hidden Gaussian mixture (GM) signal model is considered. Monte Carlo Markov-chain methods are developed for converging to optimal model parameter estimates, which are then used to …
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Spatial ecology and demography of eastern coyotes (Canis latrans) in western Virginia
… habitat selection at four scales using eigenanalysis of selection ratios. I developed a metric to classify social status of individuals as either resident or transient based on stability of home range centers over time. I found evidence for class substructure for selection of territories …
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Model-based Analysis of Myocardial Microstructure for Left Ventricular Mechanics using MRI
… signals. These methods avoid the need to perform eigenanalysis on the diffusion tensor, or, when fitting to raw diffusion signals, eliminate the need to compute diffusion tensors using least squares fitting. Cardiac mechanics simulations are sensitive to the representation of microstructural …
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Improved broadband adaptive beamformer performance
… a frequency mask that varies on a per-bin basis. Eigenanalysis of the beamformer's covariance matrix is used to explore the ability of frequency-domain excision to desensitise the beamformer to narrowband interference while bit error rate (BER) simulations demonstrate the enhanced interference …
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Actuator selection and placement for linear feedback control of compressible flows
… reduction with increase in control gain. Eigenanalysis of the controlled mean flows reveal fundamental changes in the spectrum at frequencies lower than that used by the control, with the quieter flows having unstable eigenvalues that correspond to eigenfunctions without significant …
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Subspace methods for portfolio design
… and jointly treated. First, KLT, also known as eigenanalysis or principal component analysis (PCA) of empirical correlation matrix for a random vector process that statistically represents asset returns in a basket of instruments, is investigated. Auto-regressive, order one, AR(1) discrete …
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An examination of the large-scale drivers of North Atlantic vertical wind shear and seasonal tropical cyclone variability
… Atlantic VWS remain marginal except for ENSO. Eigenanalysis applied to the CESM1-LE shows that the principal components are ill-defined and gives no distinct pattern for non-ENSO associated large-scale drivers. Thirdly, composite analyses show that despite the narrow range of VWS variability …
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Reduced Order Modeling for Efficient Stability Analysis in Structural Optimization
Design optimization involving complex structures can be a very resource-intensive task. Convex optimization problems could be solved using gradient-based approaches, whereas non-convex problems require heuristic methods. Over the past few decades, many optimization techniques have been presented in …
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Efficient Finite Element Electromagnetic Analysis for High-Frequency/High-Speed Circuits And Multiconductor Transmission Lines
This dissertation comprises the following four components. (1) Development of a robust and efficient 3-D finite element electromagnetic field solver with high-order vector elements for high-frequency and high-speed circuit simulations. The solver supports wave port and lumped port excitations as …