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 1123 for “"spatiotemporal"”.
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Spatiotemporal brain imaging
… resolution. This thesis develops and applies a spatiotemporal neuroimaging method. I describe a linear estimation inverse approach, which is a method for the combination of functional magnetic resonance imaging (fMRI) with electroencephalography (EEG) and magnetoencephalography (MEG). fMRI …
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Urban Spatiotemporal Energy Flux
… dissertation, I explore the interdependencies of spatiotemporal fluctuations of human mobility as an indicator for human activities and energy use in urban areas in three main studies. First, I show that the fluctuations of intra-urban human mobility and energy use have an underlying structure …
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Video Processing Using Spatiotemporal Structure
… utilized for both video processing using local spatiotemporal structure models of motion boundaries and video coding using backward multiscale (i.e., multiresolution) motion representations. Models of local spatiotemporal structure are exploited for efficient block-based motion estimation and …
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Spatiotemporal brain imaging and modeling
… and novel analytical approaches to improve the spatiotemporal resolution of single (MRI) or combined (MRI/fMRI and MEG/EEG) imaging modalities. In addition, mathematical approaches for identifying large-scale neural networks and their correlation to behavioral measurements are investigated. Part …
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Spatiotemporal Signatures of Elastoinertial Turbulence
… state of turbulence with significantly different spatiotemporal features compared to Newtonian turbulence, commonly termed elastoinertial turbulence (EIT). We explore EIT by studying the dynamics of low-speed submerged jets of dilute aqueous polymer solutions injected through a nozzle into a tank …
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Spatiotemporal Drivers of Municipal Water Consumption
This study analyzed the individual and joint influences of social, urban, and physical landscape characteristics on patterns of municipal water consumption at the county scale for the state of Texas using a cross-sectional research design on three distinct temporal slices (1990, 2000, and 2010). …
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Spatiotemporal Indexing With the M-Tree
… in motion, and to support queries on this spatiotemporal data in real time. Because the M-Tree has been proven as an index for spatial network databases, we have selected it to be enhanced as a spatiotemporal index. We present modifications to the tree which allow trajectory reconstruction …
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Representation learning on heterogeneous spatiotemporal networks
… handle big data that can be structured into Spatiotemporal Heterogeneous Networks (SHNs), thereby making efficient analysis of these networks extremely vital. In recent years, representation learning models have proven to be quite efficient in capturing effective lower-dimensional …
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Vector Zonal Operations for Spatiotemporal Analysis
… data and lack the capability of performing spatiotemporal analysis. This research developed zonal operations for spatiotemporal analysis where spatiotemporal zones can be defined in the vector data model. The zonal operations were used to extract watershed hourly or daily precipitation for …
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Spatiotemporal Interaction Networks in Plant Development
… and checkpoints of organ development, while spatiotemporal perturbations to the regulatory network affect stem cell maintenance and organismal dynamics. Next, to elucidate the regulatory mechanisms underlying auxin transport, we examined cell polarity within a generalised theoretical …
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Egomotion estimation using binocular spatiotemporal oriented energy
… estimation based on binocularly matched spatiotemporal oriented energy distributions. Basing the estimation on oriented energy measurements makes it possible to recover egomotion without the need to establish temporal correspondences or convert disparity into 3D world coordinates. There …
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Spatiotemporal Big Data Analytics for Future Mobility
Recent years have witnessed the explosion of spatiotemporal big data (e.g. GPS trajectories, vehicle engine measurements, remote sensing imagery, and geotagged tweets) which has a potential to transform our societies. Terabytes of earth observation data are collected every day from thousands of …
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On Shape-mediated analysis of spatiotemporal distributions
… framework to automate object-based analysis of a spatiotemporal property of a study phenomenon. Raw data is smoothly interpolated to provide a temporal series of surfaces represented as digital images. From each time sample, objects of activity are automatically extracted. These objects may be …
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Spatial and Spatiotemporal Modeling of Epidemiological Data
… focuses on modeling approach for spatial and spatiotemporal data with epidemiological applications. Chapter one gives the general overview of spatial and spatiotemporal data and challenges in the statistical analysis of spatial and spatiotemporal data, and motivation and objectives of the …
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Spatiotemporal Event Graphs for Dynamic Scene Understanding
… In the first method, we present a deformable, spatiotemporal scene graph approach, consisting of three main building blocks: action tube detection, a 3D deformable RoI pooling layer designed for learning the flexible, deformable geometry of the constituent action tubes, and a scene graph …
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Vector quantization for spatiotemporal sub-band coding
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1990.
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