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 20 of 70 for “"Spatial Correlations"”.
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Non-invasive IC tomography using spatial correlations
… variations. The power (delay) variations are spatially correlated. Thus, there exists a basis in which variations are sparse. The sparse representation suggests using the L1-regularization (the compressive sensing theory). We show how to use the compressive sensing theory to improve …
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Confinement, spatial correlations and flexibility in the melting transition of DNA
La tesis estudia la fusión de ADN utilizando difracción de neutrones, difracción de rayos X y calorimetría. Las técnicas de difracción pueden acceder correlaciones estructurales en las moléculas durante la transición de fase que son definen la naturaleza de la transición pero son prácticamente …
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Exploring Temporal and Spatial Correlations on Circuit Variables for Enhancing Simulation-based Test Generation
… particular, we model and explore the following correlations: (1) temporal correlations, i.e. correlations on each primary input (PI) in different time frames, and (2) spatial correlations, i.e. correlations among different FFs in the same time frame. We employ temporal correlations in the …
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Turbulent Mass Transfer to a Wall at Large Schmidt Numbers (Convection Velocity, Simulation, Wave Number Spectra, Drag-Reducing Polimers, Spatial Correlations)
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1985.
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Investigations of quantum sensing techniques for deflection and displacement metrology
… to measure a beam deflection. We then discuss how spatial correlations emerge from spontaneous parametric downconversion and how we utilize those correlations to improve the achievable resolution of a beam displacement. Finally, we discuss a possible way to use a quantum eraser to improve the …
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Experimental Investigation of Highly Irregular Roughness Effects in Wall Turbulence
Finally, the spatial structure of flow over the RF1 surface is contrasted with that over the smooth wall, both within and outside the roughness sublayer, to further assess the possibility of structural modifications due to roughness. Hairpin vortex packets, commonly observed in smooth-wall …
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Applications of noise theory to plasma fluctuations
… Noise theory is used to study the time and space correlations of stationary Markovian fluctuations that are statistically homogeneous and isotropic. The relaxation of the fluctuations is modeled by the diffusion equation. The spatial correlations are modeled by the exponential decay. Based on …
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A Computational Neuroscience Approach to Higher-Order Texture Perception
… information characterised by higher-order spatial correlations. Neurons have limited capacities, so the visual system must filter out non-salient information, but retain that which is behaviourally relevant. Previous research has concentrated on two-point correlations; there has been less …
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A Computational Neuroscience Approach to Higher-Order Texture Perception
… information characterised by higher-order spatial correlations. Neurons have limited capacities, so the visual system must filter out non-salient information, but retain that which is behaviourally relevant. Previous research has concentrated on two-point correlations; there has been less …
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Robust object exploration and detection
… Our major contribution lies in modeling the spatial correlations between the sensor and object. Next, we develop models and algorithms used to explore the world in order to find all of the objects. We develop a model with tractable inference which reasons about the locations of all the …
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Priors in finite and infinite Bayesian convolutional neural networks
… images. We can prevent this loss by introducing spatial correlations in the weight prior of a Bayesian CNN, which still results in a GP in the infinite width limit. The second prong is an empirical methodology for identifying new priors for BNNs. Since BNNs are often considered to underfit, I …
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Calculation, utilization, and inference of spatial statistics in practical spatio-temporal data
The direct influence of spatial and structural arrangement in various length scales to the performance characteristics of materials is a core premise of materials science. Spatial correlations in the form of n-point statistics have been shown to be very effective in robustly describing the …
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Energy-efficient information inference in wireless sensor networks based on graphical modeling
… pairwise Markov Random Field (MRF) to model the spatial correlations in a sensor network. Our MRF model is first constructed through automatic learning from historical sensed data, by using Iterative Proportional Fitting (IPF). When the MRF model is constructed, Loopy Belief Propagation (LBP) is …
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Low ion dose imaging in the Helium Ion Microscope under Neyman Type A statistics
… by sparsity in the wavelet domain to account for spatial correlations inherent in real world samples.
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Microcanonical simulations in classical and quantum field theory
… decays by topological annihilation and no spatial correlations are observed at any point in the simulation.
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Structured support vector machines learning and application in computer vision
… pairwise potential functions to represent the spatial correlations among neighboring pixels. In this thesis, we propose an alternative discriminative approach to MRFs/CRFs by extending the max-margin principle to incorporate the spatial correlations. In particular, by explicitly enforcing the …
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Structured support vector machines learning and application in computer vision
… pairwise potential functions to represent the spatial correlations among neighboring pixels. In this thesis, we propose an alternative discriminative approach to MRFs/CRFs by extending the max-margin principle to incorporate the spatial correlations. In particular, by explicitly enforcing the …
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Planar Velocity Measurements in an Incompressible and a Weakly Compressible Mixing Layer
… as compared to the incompressible case. The spatial correlations of velocity fluctuations are also smaller than those for the incompressible case. The linear stochastic estimate of a roller structure in the weakly compressible mixing layer is elliptical with the major axis oriented in the …
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Fluctuating interfaces and paths in disordered and non-equilibrium systems
… Tracy-Widom and Gaussian distributions when spatial correlations are added to the random energy landscape. As a possible application, we examine the statistics of optimal paths on actual road networks as given by GPS routing, exploring connections and distinctions to directed polymers. We …
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Spatial Patterns in a 40-year-old Slash Pine (Pinus elliottii Engelm.) Forest in the Coastal Plain of South Carolina
… Site near Aiken, SC to: 1) characterize the spatial patterns of soil and forest floor variables (moisture, pH, soil phosphate, forest floor and soil carbon and nitrogen, and soil available nitrogen), 2) assess the spatial patterns of the plant community, and 3) investigate spatial …
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