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Acoustic and elastic least-squares two-way wave equation migration with exact adjoint operator
DownloadSpring 2017
A major problem in exploration seismology entails estimating subsurface structures and properties via linearized inversion. The problem is often called ''least-squares migration" where seismic imaging is posed as an iterative least-squares problem. The iterative solution employs the method of...
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Fall 2015
Optical-resolution photoacoustic microscopy (OR-PAM) is a novel imaging technology providing high micron-scale lateral spatial resolution to visualize superficial structures in vivo with optical-absorption contrast. The term “optical resolution” is used since the lateral resolution of the system...
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Chronic Fatigue Mechanisms in Autoimmune Diseases: Lessons from Primary Biliary Cholangitis and Systemic Sclerosis
DownloadFall 2023
Systemic sclerosis (SSc) is an autoimmune disease affecting the body's connective tissues, resulting in progressive fibrosis and vasculopathy. In some cases, individuals with SSc may also develop primary biliary cholangitis (PBC), another autoimmune disease characterized by damage to their...
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Fall 2014
The detection and identification of biomarkers and metabolites in the low mass range has become prominent in clinical diagnoses, disease monitoring and for tracking drug interactions. Laser desorption/ionization techniques have been applied as a powerful tool in this field because of their speed...
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Data analysis for the classification of gas-liquid and liquid-solid (slurry) flows using digital signal processing
DownloadSpring 2013
The Canadian oil sand industry operates three phase gas-liquid-solid hydrotransport pipelines to transport oil sand ore from mines to processing facilities. This hydrotransport process is critical to downstream separation activities, given the conditioning steps that occur within it: (i) lump...
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Development of imaging-based techniques to examine signalling properties of channel catfish (Ictalurus punctatus) leukocyte immune-type receptors (IpLITRs)
DownloadSpring 2017
Cells of the innate immune system have the ability to rapidly detect and eliminate pathogens using surface-expressed immunoregulatory receptors that translate extracellular binding into effector functions such as degranulation, cytokine secretion, cell-mediated cytotoxicity, and phagocytosis....
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Fall 2010
Structural brain changes occur in a complex manner throughout life, and understanding healthy brain development is crucial for the study of brain abnormalities in various conditions. Diffusion tensor imaging (DTI) is an advanced magnetic resonance imaging technique that provides information about...
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Spring 2014
A wireless sensor network (WSN) consists of spatially distributed sensor nodes which are deployed to monitor some process of interest. Although WSNs are very promising, the distributed nature, attributes of wireless networks, and availability of limited resources in WSNs introduce significant...
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Efficient algorithms for least squares wave equation migration and source signature estimation
DownloadFall 2017
Estimating accurate images of the subsurface is one of the end products of seismic data processing. Numerical solutions to the wave equation allow designing linearized forward operators. The adjoint of the linearized forward operator is used to image the interior of the earth. The adjoint...