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 14 of 14 for “"Maximum correlation"”.
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Influence of low frequencies on seismic impedance inversion
… operator using color operator. At the end, the maximum correlation results between acoustic impedance inversion and well impedance demonstrate using color operator can increase the maximum correlation by around 20 percent comparing with the result without using color operator.
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Optimization for source localization and geoacoustic inversion in underwater acoustics
… and find the model parameters which provide the maximum correlation. However, when a large number of unknown parameters is involved, many modeled data need to be generated and correlated with the observed data and thus, matched-field inversion can be computationally intensive. An optimization …
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Model-Free Variable Screening, Sparse Regression Analysis and Other Applications with Optimal Transformations
… <p>In the first part of the thesis, we develop a maximum correlation-based sure independence screening (MC-SIS) procedure to screen features in an ultrahigh-dimensional setting. We show that MC-SIS possesses the sure screen property without imposing model or distributional assumptions on the …
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Localization of acoustic transients in shallow water environments
… source localization results from finding the maximum correlation between the positionally dependent, numerical modeled signals and the actual received signal. The position of the maximum cross correlations reveals an estimate of source position. Using model to model correlation, this …
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Impactos do El Niño 1997/1998 sobre a dinâmica da Corrente do Brasil
… after the onset of the phenomenon and cross-correlation between transports with MEI submitted a maximum correlation of approximately 46%.
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The Two Point Correlation Structure of a Cylinder Wake
… study the complete four dimensional space time correlation function was measured in the wake of an untripped circular cylinder at a Reynolds number of 60 000. This correlation serves as the complete inflow boundary condition for an open rotor ingesting inhomogeneous turbulence. An important …
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Magnetic Resonance Imaging Movies for Multivariate Analysis of Speech
… vector machine (SVM) analysis and canonical correlation analysis (CCA). Determination of classification accuracy through SVM analysis revealed that phoneme pairs were distinguishable from one another consistently over 90% of the time using information found from MRI movie clips of the speech. …
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Dense Optical Flow Estimation using Diffusion Distances
… neighbourhood. These features are then used in a correlational optical flow estimation algorithm to illustrate the improvement to the dense estimate of optical flow by using a richer description of features as the elementary unit in the estimation. By considering systems of correlation vectors …
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Carbon Cycle Trends Recorded By Organic Carbon Stable Isotopes In Paleocene Strata, Benton County, Mississippi: Implications For Chronostratigraphy Of The Porters Creek And Naheola Formations
The paleocene-eocene thermal maximum (petm) is one of the most studied carbon isotope excursions in earth's history. The petm occurred 55 million years ago when excess isotopically heavy carbon (c13) was added into earth's carbon cycle, resulting in ecological and environmental changes. The petm is …
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Dispersion of seabirds at sea in the Southern Ocean
… ranges of features is demonstrated, linear correlations are weak (maximum correlation coefficient (r = 0.325). Abiotic features associated with the distribution of the Snow Petrel Pagodroma nivea and the Antarctic Petrel Thalassoica antarctica were investigated in greater detail. Statistical …
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Quantum information, Bell inequalities and the no-signalling principle
… local hidden variable theories (LHVT) for the correlations obtained by measuring a pair of qubits by projections defined by randomly chosen axes separated by a given angle θ. The predictions of LHVT correspond to binary colourings of the Bloch sphere with antipodal points oppositely coloured. …
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Análise de observações do diâmetro no contexto da atividade solar
… the bias, using coefficients obtained from the correlation between the parameters and the observational measures. The series of 16.523 coherent data of the variation of the Solar Semidiameter, between 1998 and 2003, allowed the detailed comparison with series of pointers of the solar activity: …
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Impacts of ENSO on coastal South African sea surface temperatures
… among the three products concerning trends and correlation with ENSO is a cause for concern. The 4 km x 4 km AVHRR Pathfinder allows for SST to be extracted even closer to the coast but missing values are numerous and hamper the use of this dataset for ENSO composites and trend analyses. Results …
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Analysis of construction and stakeholder risks for Public Private Partnership projects in developing countries : a comparative analysis using Artificial Neural Networks to determine the effect of poor stakeholder management and construction risks on the project’s schedule (PPP vs. traditional projects)
… Kong and the UK. Based on the model´s outcomes, correlations between all input and target variables ranked in descending order based on the best model out of the ten models were calculated. The maximum correlation (0.803336) is yield between the input variable “Delay in resolving contractual …