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 12 of 12 for “"multi-epoch"”.
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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
Monitoring the movement of landslides and rock slopes is critical when there is potential for injury of persons or damage to property or infrastructure. There has been extensive research into the processes that drive slope movements, but most have been based on monitoring data that is either …
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The dynamical state of a young stellar cluster
… are derived for 32 YSOs, with some being multi-epoch, using Markov-Chain Monte Carlo routines based upon the package <i>emcee</i>. Sources are chosen based upon their spectral index to focus on the earlier stages of star formation, in this case, Class I and Flat spectrum objects, and …
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Exploring the Environment of Young Stars: Disks, Companions and Clusters
… of star formation: Disk evolution, stellar multiplicity, FU Ori phenomenon and the formation of massive stars. The main results are the following: 1. By applying the novel method of polarimetric differential imaging and the NACO/VLT instrument we probe one of the closest circumstellar disks …
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Value centric approach to target system modularization using multi-attribute tradespace exploration and network measures of component modularity
… likely to change levels. The approach utilitizes Multi-Attribute Tradespace Exploration, Multi-Epoch Analysis, and network measures of component modularity to identify components which are most likely to need to change as well as the components ability to make a modularity change. It is found that …
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Decentralized collaborative localization in urban environments with inter-agent ranging and 3D-mapping-aided (3DMA) GNSS
… environments is prone to error sources such as multipath and signal blockage due to buildings in the environment. However, if we consider several agents, then the localization capabilities may differ among the agents due to reasons such as heterogeneity of sensors, different view of the sky, the …
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Image-based Fine-scale Infrastructure Monitoring
… existing literature. Methods for in-situ multi-camera system calibration and system stability analysis are proposed in addition to methods for deflection/displacement monitoring, and crack detection and characterization in three dimensions. The mathematical model for the system calibration …
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Discovery and Characterisation of Gravitationally Lensed Quasars in Wide-field Surveys
… is bent around the foreground galaxy to create multiple, distorted, and magnified images. When the background galaxy hosts a bright active galactic nucleus, a quasar, the system becomes a probe of accretion disk physics, quasar-host galaxy relations, the Hubble constant, the stellar IMF, smooth …
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Optical surveys of AGN and their host galaxies
… to extract variability properties of AGNs. Using multi-epoch deep photometric observations, we subtract the contribution of the host galaxy at each epoch to extract variability and estimate AGN accretion rates. This pipeline will be a powerful tool in connection with future deep surveys such as …
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The Structure and Polarization Properties of the SiO Masers in the Extended Atmosphere of R Aquarii
… This dissertation presents the results of a multi-epoch VLBI study of the v=1, J=1-0, 43-GHz SiO maser emission towards the symbiotic binary R Aquarii. Four epochs of full-polarization observations were recorded using the Very Long Baseline Array a facility the National Radio Astronomy …
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The Temporal Structure of Attention in Multi-Part Tasks
… network of frontoparietal brain regions, called “multiple-demand” regions, that serve as a hub for flexible cognition. Neurons within this network adapt to code what is relevant for the current task, across many task types. Under the attentional episodes view, prioritising immediately relevant …
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A 3-dimensional analysis of the Cassiopeia a supernova remnant.
We present a multi-wavelength study of the nearby supernova remnant Cassiopeia A (Cas A). Easily resolvable supernova remnants such as Cas A provide a unique opportunity to test supernova explosion models. Additionally, we can observe key processes in the interstellar medium as the ejecta from the …
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Exploring the nature and origins of low luminosity type IIP supernovae
… in optical and near infrared (NIR) bands across multiple epochs. This is one of very few (4) progenitor candidates to have both multi-band and multi-epochphotometric data. I fit synthetic atmosphere models to the photometric data and found that the best fitting spectral energy distribution (SED) …