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.
Results
Showing 1 to 20 of 167 for “"Spatial Correlation"”.
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Spatial correlation tensor and query-augmented active clustering
… imaging data by incorporating the pixel correlations. Multi-dimensional tensor data has gained increasing attention recently, especially in biomedical imaging analyses. However, most existing tensor models are only based on the mean information of imaging pixels. Motivated by multimodal …
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Spatial correlation of lipid phase fluctuations in model membranes studied with two-photon fluorescence microscopy
… dynamics of lipid phase fluctuations and the spatial organization of model lipid membranes was studied using Two-photon excitation fluorescence microscopy. Lipid membranes of different composition were reconstituted in Giant Unilamellar Vesicles (GUVs) and labeled with the environment …
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Performance Analysis of Space-Time Coded Modulation Techniques using GBSB-MIMO Channel Models
… studies the sensitivity of these two schemes to spatial correlation in MIMO channels. The first part of the thesis studies the effect of spatial correlation on the performance of STBC by using Geometrically Based Single Bounce MIMO (GBSB-MIMO) channel models. Performance is analyzed for two …
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A New State Transition Model for Forecasting-Aided State Estimation for the Grid of the Future
… modeling of filtered system states and it takes spatial correlation among the states into account. Once the states with high spatial correlation are identified, the time-series models are developed to capture the dependency of voltages and angles in time and among each other. The temporal …
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APPLICATION OF CONDITIONAL SIMULATION MODEL TO RUN-OF-MINE COAL SAMPLING FREQUENCY DETERMINATION AND COAL QUALITY CONTROL AT THE POWER PLANT (BLENDING, GOAL PROGRAMMING, MICROCOMPUTER).
… the use of geostatistical techniques if there is spatial correlation in ROM coal quality, and (2) the use of classical statistics if the spatial correlation in ROM coal quality is not present. Conditions under which spatial correlation in ROM coal quality can be expected are also examined. To link …
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Generalized gamma spatial ARMA conditional model for speckled data: theoretical developments and applications
… thesis aims to advance the study of conditional spatial ARMA models for SAR image data. First, we propose a conditional spatial ARMA model based on the generalized gamma distribution, which incorporates spatial correlation and accounts for the positive and asymmetric nature of SAR data. We derive …
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Time-to-Event Modeling with Bayesian Perspectives and Applications in Reliability of Artificial Intelligence Systems
… The model considers several covariates, the spatial correlation, and the correlation among multiple types of failures. In addition, unique spatial correlation functions and a special distance function are introduced to quantify the spatial correlation inside supercomputers. The model is …
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Information theoretic approach for assessing image fidelity in photon-counting imagers
… that the PCI fidelity metric increases with spatial correlation in source image, from which we infer that the PCI method is particularly effective for source images with high spatial correlation; the metric also increases with the reduction in photon-number uncertainty. As an application to …
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Bayesian Methodology for Missing Data, Model Selection and Hierarchical Spatial Models with Application to Ecological Data
… with many problems such as Missing Data and Spatial Correlation. In this dissertation we use a data set collected by the Ohio EPA as motivation for studying techniques to address these problems. The data set is concerned with the benthic health of Ohio's waterways. A new method for …
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Semiparametric estimation with clustered right censored data via multivariate gaussian random fields
… be independent. They can also be correlated with correlation between two units induced by an unobservable frailty. In both cases, the collected data is considered pairwise to account for spatial correlation between all pair of areas. The pairwise right censored data is probit-transformed yielding …
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Short-term wind power forecasting using artificial neural networks-based ensemble model
… and using forecasting techniques like spatial correlation and ensemble for ANNs. In this research, the effect of input features, model parameters, spatial correlation and ensemble techniques on short-term wind power forecasting performance of the ANNs models was evaluated. Pearson …
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Spatial modeling, covariate measurement error and design issues in environmental epidemiology
… and area level covariates while adjusting for spatial correlation in disease rates. We also extend the indiCAR method to a semiparametric mixed model framework that allows adjustment for smooth covariate effects (smooth-indiCAR). We illustrate the applicability of both methods in a distributed …
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Characterization and mitigation of process variation in digital circuits and systems
… of the variation sources, magnitudes and spatial components at the device, circuit and architectural levels. This thesis explores the impacts of variation at each of these levels and evaluates techniques to alleviate them in the context of digital circuits and systems. At the device level, …
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Optimal Designs with Limited Resources
… optimal minimally connected block designs with spatial correlation structure. The third chapter details the discovery of the optimal incomplete designs with two blocks. The fourth chapter does the same for the optimal binary incomplete designs with three blocks. The fifth chapter summarizes the …
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Evaluating the homogeneity of preferences across resident and nonresident elk hunters in Colorado
… In order to allow for different levels of spatial correlation, two models are estimated with one model for resident applications and one with nonresident applications. Upon finding that there is spatial correlation of OLS residuals, spatial error models are fitted to the resident and …
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An experimental investigation of large-scale structures in supersonic reattaching shear flows
… planar imaging was employed to study the spatial organization of large-scale structures within the shear layers, at reattachment, and in the wake region of a supersonic base flow. Single-pulse side and end views were obtained at several streamwise locations to characterize the evolution …
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Effect of Exponential Correlation Model on Spectral and Energy Efficiency for Massive MIMO Systems
… but there is little attention so far on the spatial correlation between the channels. Most of the published work are assuming that the antennas are uncorrelated which is not the case in real-world situations. In this dissertation, the effect of channel correlation model on the Massive MIMO …
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Multiphase flow and fault poromechanics : understanding earthquake triggering and seismic hazard
… the degree of confining stress and the degree of spatial correlation of the fracture aperture.
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Spatiotemporal Dynamics and Climate-Driven Risk of Compound Flood Events in the Great Lakes Basin
… future period. In addition, flood temporal and spatial correlation analyses show that future floods are likely to occur earlier, with increasing spring floods across the region. The spatial correlation between floods in the Lake Erie and Lake Michigan Basins is stronger and projected to …
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Vibrational and mechanical properties of disordered solids
… in such depleted lattices with regard to spatial correlation local elasticity. We found that the implementation of long springs with decaying spring constant reproduced the spatial correlation observed in simulations of Lennard-Jones glasses. Finally we looked at simple freely rotating …
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