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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 20 of 35 for “"spectral decomposition"”.
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Spectral Decomposition of a Class of Operators
Made available in DSpace on 2014-12-05T21:50:24Z (GMT). No. of bitstreams: 1 6303334.pdf: 1929515 bytes, checksum: eb74cfa76d6d040ff35bcc7b753bfe1f (MD5) Previous issue date: 1962
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Automatic First Break Detection by Spectral Decomposition Using Minimum Uncertainty Wavelets
… detec- tion that is based on time-frequency spectral decomposition method and utilizes the Cn Transform and the Super-Gaussian μ wavelets. We tested our method on lab data with various signals and first arrival time was determined. The results were compared to the manual detection and our …
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Spectral Decomposition of Stochastic Processes With Parameter in a Hilbert Space
Made available in DSpace on 2014-12-11T18:23:37Z (GMT). No. of bitstreams: 1 7114754.pdf: 1117598 bytes, checksum: 6eecadb746524d93c26a95dae682da84 (MD5) Previous issue date: 1970
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High-Resolution Inversion and Spectral Decomposition: Case Studies from the Bohaiwan Basin, China
… sand packages is also enhanced. RGB blending of spectrally decomposed seismic data helps to identify more details of the stacked channel pattern of the Neogene fluvial system in the Jiyang dataset, as it varies from a braided river system to a meandering river system morphology.
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RESOLUTION OF SUB-SEISMIC RESERVOIRS BY THE APPLICATION OF SPECTRAL DECOMPOSITION AND SPECTRAL INVERSION METHODS IN BOONSVILLE FIELD, NORTH CENTRAL TEXAS.
Constrained least squares-spectral analysis (CLSSA) and high resolution spectral inversion are applied to 3D seismic dataset from Boonsville field to overcome the wavelet interference arising from complex reflection patterns created by thin layering within Atoka conglomerate that forms the …
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ENHANCEMENT OF THE GEOLOGICAL FEATURES OF THE SCOTIAN BASIN BY THE APPLICATION OF SPECTRAL INVERSION, OFFSHORE NOVA SCOTIA
… quality. Frequency information obtained from spectral decomposition is related to the temporal thickness of layers. Spectral inversion uses a priori geological information and spectral decomposition to view thin beds below seismic resolution. Spectral inversion is applied to a 3D dataset from …
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Analysis of a 1D approximation of the Boltzmann Equation: the subclass of grossly determined solutions and the asymptotic behavior of the class of general solutions
… dependent on the gas's density field. Then, via spectral decomposition, we derive the class of general solutions and show that they tend asymptotically to the class of grossly determined solutions.
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Central limit theorem for some classes of dynamical systems
… is piecewise $C\sp2$ and expanding. Using the spectral decomposition of the Frobenius-Perron operator of T, we give a proof of the Central Limit Theorem for$$\left({1\over n}\right)\sum\sbsp{i=0}{n-1}f\circ T\sp{i},$$where f is a function of bounded variation. It is also shown that the speed of …
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Auditory spectro-temporal processing in the envelope-frequency domain: experiments and models
… domain reflects a "true" limited-resolution spectral decomposition, and not a selective process tuned to different repetition rates of the envelope.
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Analysis and Control of a Class of Stiff Linear Distributed Systems
… on a small parameter (epsilon). First, the spectral decomposition of the so-called "stiff" operators (using the terminology of {24}) is investigated, including the convergence of their eigenvalue-eigenvector pairs as (epsilon) (--->) 0, with the objective of clarifying their singular …
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High precision calculation of generic extreme mass ratio inspirals
… backreaction. This approach is based on a spectral decomposition of the radiation field originally introduced by Mano, Suzuki, and Takasugi (MST), and was then adapted for numerical analysis by Fujita and Tagoshi (FT). We find that the MST-FT formalism allows us to compute various …
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Investigation of time-lapse 4D seismic tuning and spectral responses to CO₂-EOR for enhanced characterization and monitoring of a thin carbonate reservoir
… across frequency sub-bands (30-80 Hz) following spectral decomposition identified geometric features of multiple LKC shoal bodies at the reservoir interval. In corroboration with prior geologic interpretation, shoal boundaries, zones of overlap between stacked shoals, thickness variation, and …
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Utilising Reverse Hydrology to quantify and improve the spatio-temporal information content of catchment rainfall estimates for flood modelling
… of RegDer dual interpretation as a composite spectral decomposition method are analysed and discussed in the context of catchment data. Potential applications and developments of the approach include in-filling and extending rainfall records, reducing uncertainty in both gauged and ungauged …
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Advanced Bioelectronic and Microphysiological Systems for Functional Studies of Stem Cell-Derived Neural Models
… analysis, integrating spike sorting, spectral decomposition, and network mapping across longitudinal measurements. Key findings include: • Material and substrate-related effects on 2D stem-cell-derived neuronal growth. • Tau-induced hyperexcitability and synaptic disruption in …
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Theoretical Study of Laser Beam Quality and Pulse Shaping by Volume Bragg Gratings
… volume Bragg gratings (CBG) is reviewed based on spectral decomposition of short pulses and on the wavelength-dependent coupled wave equations. The analytic theory of diffraction efficiency of a CBG with constant chirp and approximate theory of time delay dispersion are presented. Based on those, …
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High-Sensitivity Nitrogen-Vacancy Center Magnetometry: from DC to GHz
… diamond samples by developing an NV-charge state spectral decomposition technique, which we use to examine the creation dynamics and diffusion of monovacancies in the diamond lattice. We also examine the behavior of the spin coherence timescales under increasing electron irradiation doses. We then …
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ΓΕΝΙΚΕΥΜΕΝΑ ΚΡΙΤΗΡΙΑ ΑΣΤΟΧΙΑΣ ΑΡΧΙΚΩΣ ΑΝΙΣΟΤΡΟΠΩΝ ΕΛΑΣΤΙΚΩΝ ΜΕΣΩΝ ΜΕ ΙΔΙΑΙΤΕΡΗ ΕΜΦΑΣΗ ΣΤΑ ΣΥΝΘΕΤΑ ΥΛΙΚΑ
… ANISOTROPIC MEDIA WAS STUDIED IN TERMS OF SPECTRAL ANALYSIS THEORY OF 4TH RANK SYMMETRIC TENSORS. BY MEANS OF THE SPECTRAL DECOMPOSITION OF THE TRANSVERSELY ISOTROPIC COMPLIANCE TENSOR, ITS EIGENVALUES AND EIGENTENSORS WERE EXPLICITY DEFINED. IT WAS SHOWN THAT THESE EIGENTENSORS DECOMPOSE …
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On Multi-component Nonlinear Schrödinger Equation with PT-Symmetry
… related to symmetric spaces. This includes: the spectral properties of the associated Lax operator, Jost solution, the scattering matrix, the minimal sets of scattering data and the fundamental analytic solutions. We also derive the completeness relations of Jost solutions which are related to …
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The functional role of the mammalian tectorial membrane in the cochlear mechanics
… that provide the mechanical tuning necessary for spectral decomposition of sound. These traveling waves of motion propagate along the basilar membrane (BM) and ultimately stimulate the mechano-sensory receptors. The tectorial membrane (TM) plays a key role in this stimulation process, but its …
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Analog Signal Processing Elements for Energy-Constrained Platforms
… field.;Most audio processing techniques utilize spectral decomposition as the first step of their algorithms, whether by a FFT/DFT in the digital domain or a bank of bandpass filters in the analog domain. The work presented here is designed to function within the parallel, array-based environment …
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