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 117 for “"high temporal resolution"”.
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Apertureless Scanning Nearfield Optical Microscopy with Ultra-high Temporal Resolution
… optical microscope (ppaSNOM), that combines a temporal resolution of 1ps with a spatial resolution of 20nm. This alloptical technique far below the diffraction limit of light allows to study ultrafast processes on the nano scale. As a proof of principle system we choose the mechanical …
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MONITORING URBAN DYNAMICS USING HIGH-SPATIAL AND HIGH-TEMPORAL RESOLUTION SATELLITE IMAGES
… With the availability of satellite data at higher spatial (3-10 m) and temporal (1-3 days) resolutions, new opportunities arise to monitor and characterize urban changes. This dissertation advances the utilization of high-spatial and high-temporal resolution satellite images to identify and …
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Development of a high temporal resolution rockfall database using structure-from-motion photogrammetry and analyses of seasonal- and weather-rockfall relationships
… study rockfall processes, this thesis develops a high temporal resolution and high spatial resolution rockfall database for a section of rock slope located on the westbound lane of Interstate 70, west of Idaho Springs, Colorado. The slope is comprised of both a cut and natural portion of weathered …
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Rockslope and landslide monitoring using high temporal resolution terrestrial structure from motion photogrammetry: a case study of a landslide in Majes zone, Peru using multi-epoch photogrammetric techniques
… on monitoring data that is either limited in temporal resolution or limited in spatial resolution. Point clouds created from lidar scanning or photogrammetric techniques have seen increased use in recent years due to their potential to capture surficial slope movements at both high spatial and …
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Calcium Signaling Dynamics in RBL Cells Under Pulsed Ligand Exposure
… suspension and adherent cells with reagents at high temporal resolution and image them simultaneously is a process that could uncover many unseen signaling events. In Aim 1, we describe a microfluidic device for live cell imaging of cell signaling events after ligand activation. This …
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ADVANCING METHODS FOR APPORTIONING THE SOURCES OF SEDIMENT IN RIVERS: COMBINING SPECTROSCOPY AND STABLE ISOTOPES WITH BAYESIAN MIXING MODELS
… relating to difficulties in producing high-temporal resolution apportionment estimates, inconsistencies in mixing model uncertainty representation, and a lack of attention given to organic matter provenance. Addressing these deficiencies, a combined X-ray fluorescence spectroscopy …
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Advanced methods for the analysis of multispectral multitemporal satellite images
… observation satellites, a huge amount of multitemporal (MT) images are now available in archives. Such kind of images allows us to monitor land surface changes in wide geographical areas according to both long term (e.g., yearly) and short term (e.g., daily) observations. Evolution on the …
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Imaging räumlicher und zeitlicher Dynamik der Geruchstoffrepräsentation im Bulbus Olfactorius der Säugetiere mit einem neuen spannungsabhängigen Farbstoff
… described in the mammalian olfactory bulb. Their temporal dynamics have so far only been ex-amined in non-mammalian vertebrates and insects. Complex temporal response patterns have been described on a single cell level or with low spatial resolution using electroencephalography (EEG), however …
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The dynamics of invariant object and action recognition in the human visual system
… either use physiology recordings, which provide high spatiotemporal resolution data with limited brain coverage, or functional MRI, which provides high spatial resolution data from across the brain with limited temporal resolution. High temporal resolution data from across the brain is needed to …
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Neuromorphic control of dynamic systems
… that this pipeline offer fresh measurements at a high temporal resolution with low-latency in a computationally-cheap manner for efficient control. This desirable situation may be hard to come by for majority of the current vision-based robotic applications that rely on the traditional …
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Spectral dynamics of single quantum dots : a study using photon-correlation Fourier spectroscopy for submillisecond time resolution at low temperature and in solution
… fluorescence spectroscopy is limited in temporal resolution by the need to collect enough photons to measure a spectrum, in frequency resolution by the dispersing power of the spectrometer, and by environmental conditions by the need to immobilize the chromophore on a substrate. In this …
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Crop monitoring and yield estimation using polarimetric SAR and optical satellite data in southwestern Ontario
… to subfield-scale crop monitoring studies, both high spatial resolution and high temporal resolution of the image data are important. However, the acquisition of optical data is limited by the constant contamination of clouds in cloudy areas. This thesis explores the potential of polarimetric …
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Remote sensing assessment of rapidly changing lake areas in semi-arid closed basins : modern playa lake response to meteorological variability and implications for pluvial Lake Palomas Holocene highstands
… are dry. The ability to monitor these lakes at a high temporal resolution is critical to understanding their response to climate variability as well as improving our interpretation of their paleoenvironmental record, yet such monitoring is currently conducted on few playas. There are several …
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Image Deconvolution Techniques for Single Molecule Studies
… of many molecules. Consequently, the advent of high-resolution imaging in single molecule microscopy has enabled researchers to probe the underlying processes of gene regulatory networks and other biological systems. There is, nonetheless, a tradeoff between spatial and temporal resolution, or …
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Data Fusion and Synergy of Active and Passive Remote Sensing; An application for Freeze Thaw Detections
… different platforms with different spatial and temporal resolutions. The research dissertation aims to enhance the synergy use of active and passive microwave observations and examine the results in detection land freeze and thaw (FT) predictions. Freeze thaw cycles particularly in high-latitude …
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Deep learning for downscaling GOES-18 measurements for wildfire detection
… difficult due to limitations in the spatio-temporal resolution of current satellite imagery. For example, the Geostationary Operational Environmental Satellites (GOES-R) series containing the Advanced Baseline Imager (ABI) offers high temporal resolution for frequent observations but suffers …
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Brain segmentation using endogenous contrast mechanism using breath holding fMRI signal for tissue characterization
… brain. MRJ is a non-invasive method and gives high spatial resolution maps of the brain with soft tissue contrast. Conventional MRI technique modified to be used to image the functionality at high temporal resolution is known as fMRI. In fMRI the BOLD signal we measure is the hemodynamic …
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Pharmacological studies of C. elegans cultured in axenic media: nicotine and its effects on growth, body morphology, and reproduction
… microfluidic device was developed and used with high temporal resolution automated microscopy to quantify the morphological changes, growth rates, reproductive behavior, and lifespan in liquid axenic C. elegans Habitation and Reproduction (CeHR) media. The media was also used to quantify certain …
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Characterisation of a Cavity Ring-Down Spectrometer for measuring CO2, CH4, delta13CO2, and delta13CH4 in ambient air
… estimating the atmospheric CO2 and CH4 fluxes on high temporal resolution and for identifying their sources and sinks. The Cavity Ring-Down Spectrometer (CRDS) G2201-i measures 12CO2, 13CO2, 12CH4, 13CH4, and H2O continuously and simultaneously in a gas sample. In this thesis, the CRDS G2201-i has …
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Multimodal neuroimaging with simultaneous electroencephalogram and high-field functional magnetic resonance imaging
… mechanisms for brain function by combining the high spatial resolution of fMRI with the high temporal resolution of EEG. Applications for this technique include studies of sleep, epilepsy, and anesthesia, as well as basic sensory, perceptual, and cognitive processes. Unlike methods that combine …
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