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 160 for “"spatial distributions"”.
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Areal and spatial distributions of precipitation in New England storms.
Massachusetts Institute of Technology. Dept. of Geology and Geophysics. Thesis. 1966. B.S.
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Spatial Distributions of Domestic and Non-Domestic Violence by Firearm Involvement
The present study examines whether the spatial distribution of serious violence is influenced by whether the incident was domestic or not, firearm-involved or not, and any combination of these characteristics, to determine if disaggregation of the data into subgroups may aid in policy development. …
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Temporal and spatial distributions of baleen whales in central New Zealand, based on passive acoustic monitoring
… on an understanding of their spatio-temporal distributions, and how they overlap with threats. Passive acoustic monitoring (PAM) is a non-invasive method to investigate the distribution of free-ranging species that reliably produce sound, and soundscape analysis enables an integrated approach …
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Seasonal Movements and Spatial Distributions of Common Carp in an Interconnected Glacial Lake System in Eastern South Dakota
… of common carp seasonal movement patterns and spatial distributions is essential. Therefore, the objectives of my research were to: 1) evaluate seasonal and diel movement patterns of common carp in a shallow (<5 m), interconnected glacial lake system in eastern South Dakota, and 2) examine …
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The influence of water and light on the physiology and spatial distributions of three shrubs in the Southern Appalachian Mountains
… to the observed environmental gradient. The distributions of three temperate zone shrub species which occupy different positions on the spur ridges of Brush Mountain may be influenced by their tolerances to light and moisture. Greenhouse studies indicate that <i>R. maximum</i> has a 60 % …
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SUBMERGED AQUATIC VEGETATION IN A LOW-VISIBILITY LOW-SALINITY ESTUARY IN NORTH CAROLINA: IDENTIFYING TEMPORAL AND SPATIAL DISTRIBUTIONS BY SONAR AND LOCAL ECOLOGICAL KNOWLEDGE
… of establishing these sites was to examine SAV's spatial and temporal variation at regional (sound-wide) and local (site) scales at different depths, and to examine intra-annual variation of SAV to determine the optimal SAV sampling time. I sampled the SS for two consecutive years (2015, 2016), in …
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Modelling the spatial distributions and water use of Mauritius thorn (Caesalpinia decapetala) and river red gum (Eucalyptus camal dulensis) using remote sensing and geographic information system techniques in the Vhembe Biosphere Reserve
There is a need for in-depth knowledge of the spatial distributions and water use by Mauritius thorn (Caesalpinia decapetala) and River red gum (Eucalyptus camaldulensis) in the Vhembe Biosphere Reserve (VBR). Three remote sensing imagery platforms were assessed in terms of their ability to …
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A taxonomy of situated language in natural contexts
… situated language, and is represented here as spatial distributions, or two-dimensional histograms over locations in a home. These histograms are organized in the form of a taxonomy, where one can explore, compare, and contrast various slices along several axes of interest. This dataset is …
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Identification of centers of influence for urban areas
… is developed for the identification of the spatial locations about which urban population densities tend to be distributed. The identification of these "influence centers" is based upon the use of available census data. The method is developed for application to any population characteristic …
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Learning Spatio-Temporal Correlations from Dynamic and Sparse Data
… over time, resulting in datasets with dynamic spatial distributions. Existing spatial learning approaches often fall short in capturing spatio-temporal patterns from these distributions. One of the affected environmental fields is physical oceanography, which is the second discipline, besides …
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The Star-Forming Properties of Violently Interacting Galaxies
… star formation rates, stellar contents, and spatial distributions of star forming sites are explored on both global and nuclear scales via narrow-band imaging and spectrophotometry.
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Characterization of the vocal fold lamina propria towards voice restoration
… presence; 2.) quantitative examination of the spatial distributions of collagen, elastin, and hyaluronan, and qualitative investigation of the spatial distributions of specific proteoglycan types; and 3.) assessment of total cellularity and spatial variations in extracellular matrix turnover. …
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Stress Wave Scattering in Concrete: An Investigation Through Simple Finite Element Models
… with differing inclusion parameters such as spatial distribution, concentration, size, and shape; the tests employ a range of input frequencies. Tested spatial distributions include both periodic and aperiodic arrangements of inclusions.
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Spatial modelling of small mammal distributions in relation to parasite transmission in western China
This research investigates the spatial distributions of small mammal species which actas intermediate host vectors for the parasitic tapeworm Echinococcus multilocularis, whichcauses a significant burden of human disease in western China. Small mammal distributionsare modelled in relation to …
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High Resolution Distributed Sensing Using Exposed-Core Fibres
… entire fibre length, this thesis further reveals spatial distributed information of the micro-scaled particles by using the OFDR technique. The proposed scheme offers a compact and all-in-fibre approach, which avoids bulky instruments and external collection optics. Based on both theoretical …
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Development and Characterization of Direct Formic Acid Fuel Cell for Potable Power Applications
… Resonance Imaging (MRI) is used to determine the spatial distributions of water and fuel in the membrane and GDL's of operating DFAFC. MRI images taken with a 14.7 T imaging system, show that the fuel distribution with the operating fuel cell is non-uniform. Generally, there is more fuel in the …
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Seafloor habitat characterization, classification, and maps for the lower Piscataqua River estuary
… segmentations that corresponded to known spatial distributions of seafloor sediments, but required arbitrary choices for some parameter values and, therefore, included potential bias. Supervised classification of bathymetric texture overcame bias related to arbitrarily-chosen parameters …
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Characterizing neural tissues with mass spectrometry imaging via enhanced computational approaches
… circuits in the brain. They are under tight spatial and chemical control and the dynamics of their release and catabolism directly modify neuronal network activity. Understanding neuropeptide functioning requires approaches to determine their chemical and spatial heterogeneity within neural …
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Phosphorus Incorporation During Silicon(001):phosphorus Gas-Source Molecular Beam Epitaxy: Effects on Film Growth Kinetics, Surface Morphology, and the Self-Organization of Germanium Quantum Dot Overlays
… on Ge/Si(001) island geometry, density, and spatial distributions. Ge quantum dots are deposited on three types of starting surfaces: (1) Si(001) buffer layers which serve as a reference, (2) Si(001) layers with predeposited P coverages thetaP ranging from 0 to 1 ML, and (3) P-doped Si(001) …
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Spatiotemporal Variability of CO2, Solar-Induced Fluorescence, And Precipitation Over the Tropical Rainforests
… We also identify seasonal variations in the spatial distributions of these variables across the Amazon region. Over the Congo basin, during the same timeframe (Sep 2014-Dec 2019), we find that the atmospheric CO2 is ~2 ppm higher than the regional background during the boreal summer …
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