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 250 for “"high spatial resolution"”.
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Massive Star Formation at High Spatial Resolution
This thesis studies the early phases of massive stars and their impact on the surrounding. The capabilities of continuum radiative transfer (RT) codes to interpret the observations are also investigated. The main results of this work are: 1) Two massive star-forming regions are observed in the …
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Identifying chromatin interactions at high spatial resolution
… for identifying chromatin interactions at high spatial resolution from ChIA-PET data. We introduce SPROUT which is a hierarchical probabilistic model that discovers high confidence interactions between binding events that it accurately locates. We apply SPROUT to CTCF ChIA-PET data from …
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High Spatial Resolution Observations of Young Stellar Binaries
… is 29.1%+-4.3% and thus only marginally higher than the value 23.5%+-4.8% derived for the given separation range for the main-sequence solar-like stars in the solar neighbourhood. The implications of these findings will be discussed. Afterwards observations with both speckle-cameras and …
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Early Stages of Massive Star Formation at High Spatial Resolution
… stars and kinematics of UCHII regions at high spatial and spectral resolution. NIR-polarimetric maps of the reflection nebula that are generally found around these objects are used to rule out the presence of deeply embedded companions of a Young Stellar Object (S106) and to identify …
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High Spatial Resolution Measurement of Tendon Reinforcement in Underground Construction Works
… effort is the application of a particular high spatial resolution Rayleigh optical frequency domain reflectometer that is able to distinguish strain along a standard optical fiber at spatial increments as low as 0.65 millimeters. In applying this technology to reinforcement elements, the …
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Exploring Hyperspectral and Very High Spatial Resolution Imagery in Vegetation Characterization
… data, with a focus on hyperspectral and very high spatial resolution imagery. The new and innovative methods developed are: 1) integration of contribution theory into a model inversion approach to obtain high accuracy in canopy biophysical parameter estimation; 2) exploration and adoption of …
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Developing High Spatial Resolution MRI Methods for Characterisation of Porous Materials
In this thesis, high-resolution, quantitative 3D magnetic resonance imaging (MRI) methods are demonstrated to study the microstructure of, and fluid transport processes in porous rocks. A particular motivation of this work is to provide pore-scale, quantitative, spatially-resolved structural and …
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A machine learning model of Manhattan air pollution at high spatial resolution
… model was created to predict air pollution at high spatial resolution in Manhattan, New York using taxi trip data. Urban air pollution increases morbidity and mortality through respiratory and cardiovascular impacts, and understanding and predicting it is a significant public health challenge. …
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Building Detection Using a Hybrid Methodology Applied to High Spatial Resolution Aerial Photographs
<p>Automatic building detection using high-spatial resolution satellite and digital aerial photography is an important aspect of geographic information science research. Accurate methodologies can provide scientists with the building information that can be broadly applied in various applications, …
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Mapping mixed and fragmented forest associations with high spatial resolution satellite imagery : capabilities and caveats
… information is desired. Recently available high spatial resolution satellite imagery may be well suited to mapping fine-scale components of ecosystems, however, this remains an area of ongoing research. The first goal of this thesis was to assess the capacity of high spatial resolution …
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Quantitative Materials Contrast at High Spatial Resolution With a Novel Near-Field Scanning Microwave Microscope
… contrast. The materials contrast is shown in spatial variations on the surface of metal thin films, Boron-doped Semiconductor and Colossal Magneto-Resistive (CMR) thin films. The height dependence of the contrast shows sensitivity to nano-meter sized features when the tip-to-sample separation …
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Simultaneous computational discovery of DNA regulatory motifs and transcription factor binding constraints at high spatial resolution
… of identifying protein-DNA interactions at high spatial resolution from noisy ChIP-Seq data. I first present the genome positioning system (GPS) algorithm which predicts protein-DNA interaction events from ChIP-Seq data using a single-base resolution generative probabilistic model. Using …
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Penalized maximum likelihood method for reducing limited-angle artifacts in image reconstructions for a dual-panel high-spatial-resolution pet system
… emission tomography (PET) system has limited spatial resolution for imaging human head and neck cancer (HNC) due to the small size of lymph nodes. We are developing a dual-panel high-spatial-resolution PET system for better imaging HNC. The PET system is designed as a dual-panel geometry to …
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A contextual classification approach for forest land cover mapping using high spatial resolution multispectral satellite imagery – a case study in Lake Tahoe, California
… they may become less accurate when applied to high spatial resolution imagery in which the pixels are smaller than the objects to be classified. At this scale, there is a higher intra-class spectral heterogeneity. Detailed forest and vegetation classification is extremely challenging at this …
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Remote Sensing of Local Warming and Its Application Over Alberta
… satellite-borne remote sensing data at 15 m spatial resolution. In doing so, firstly, 1 km spatial resolution warming map is prepared in the whole province of Alberta for 1961-2010 time period using MODIS-derived 8-days composite images at 1 km spatial resolution. Secondly, to enhance the …
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Fabrication and application of short and novel structure in-fibre Bragg gratings
… is presented. The use of fibre Bragg gratings as high spatial resolution distributed sensors is investigated. Grating sensing arrays comprising very short apodised gratings are demonstrated and Chirped Moiré gratings are implemented as distributed sensors achieving high spatial resolution with …
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Development of a laser-based automated mechanical mobility measurement system for one-dimensional experimental modal analysis
… system has been developed that can obtain a very high spatial resolution of frequency response functions (FRFs) for experimental modal analysis where one-dimensional structural motion predominates. With this system FRFs are measured and recorded in a format that is readily imported into a popular …
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Methods for time-resolved cryo-EM using pulsed infrared radiation and vapour phase deposition
… is an imaging technique for determining high spatial resolution structures of proteins. Technological advances have made it possible to attain atomic resolution and attention may now be directed towards the challenge of extending the time resolution of cryo-EM from milliseconds to …
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Elastomeric grating sensor for multifunctional optofluidic biosensing
… electrical passivity, wide dynamic range and high spatial resolution. Optical biosensors such as laser interferometers and optical fiber sensors can be incorporated for the real time measurement of biofluid parameters. Various applications in medicine such as blood monitoring in hemodialysis …
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Monitoring and Treating Neurological Conditions Through Focal Interfacing with the Brain
… tissue reactivity and suboptimal spatiotemporal resolution. Additionally, methods for treating neurological disorders predominantly rely on systemic drug administration which is hampered by inadequate targeting and off-target effects. There is a need for minimally invasive modalities to both …
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