• Exoplanet imaging speckle subtraction: current limitations and a path forward 

  Gerard, Benjamin Lionel (2020-05-20)

  The direct detection and detailed characterization of exoplanets using extreme adaptive optics (ExAO) is a key science case of both current and future telescopes. However, both quasi-static and residual atmospheric wavefront ...
• Cosmological constraints on sub-GeV dark vectors 

  Coffey, John (2020-04-21)

  The purpose of this thesis is to recognize the effects of electromagnetic energy injection into the early Universe from decaying sub-GeV dark vectors. Decay widths and energy spectra for the most prominent channels in ...
• A comparison of the effects of local and global environment on galaxy evolution in low redshift galaxy clusters 

  Howard, Brittany (2020-01-03)

  Using the redMaPPer catalog of 21709 galaxy clusters and photometric information for 455946 galaxies from SDSS DR8, we study the effects of local and global environment on galaxy evolution within clusters in the redshift ...
• Deep learning analyses of synthetic spectral libraries with an application to the Gaia-ESO database 

  Bialek, Spencer (2020-01-03)

  In the era of stellar spectroscopic surveys, synthetic spectral libraries will form the basis for the derivation of the stellar parameters and chemical abundances. In this thesis, four popular synthetic grids (INTRIGOSS, ...
• A study on HL-LHC beam-beam resonances using a Lie Algebraic Weak-Strong model 

  Gao, Yi Lin (Kyle) (2020-01-03)

  This thesis studies the resonances driven by beam-beam interactions in the planned High Luminosity upgrade to the Large Hadron Collider (HL-LHC) using a Lie algebraic formalism. With the suggested magnetic lattice for the ...
• 3D1D modeling of the convective-reactive mixing in rapidly accreting white dwarfs 

  Stephens, David (2019-12-23)

  1D stellar evolution and nucleosynthesis simulations have traditionally modeled the mixing within convection zones as a diffusive process. The fluids within a convection zone are advecting and do not diffuse. However the ...
• Modulation of nanoparticle uptake, intracellular distribution, and retention with docetaxel to enhance radiotherapy 

  Bannister, Aaron (2019-12-10)

  OBJECTIVE: One of the major issues in current radiotherapy (RT) is the normal tissue toxicity. A smart combination of agents within the tumor would allow lowering the RT dose required while minimizing the damage to healthy ...
• First application of CsI(Tl) pulse shape discrimination at an e^+ e^- collider to improve particle identification at the Belle II experiment 

  Longo, Savino (2019-10-31)

  This dissertation investigates CsI(Tl) pulse shape discrimination (PSD) as a novel experimental technique to improve challenging areas of particle identification at high energy $e^+ e^-$ colliders using CsI(Tl) calorimeters. ...
• Hierarchical ammonia structures in galactic molecular clouds 

  Keown, Jared (2019-10-15)

  Recent large-scale mapping of dust continuum emission from star-forming clouds has revealed their hierarchical nature, which includes web-like filamentary structures that often harbor clumpy over-densities where new stars ...
• SpaceOAR hydrogel optimization and management for rectal sparing in prostate cancer patients 

  Paetkau, D. Owen (2019-09-27)

  External beam radiation therapy for prostate cancer can result in urinary, sexual, and rectal side effects, often impairing quality of life. A polyethylene glycol-based product, SpaceOAR hydrogel (SOH), implanted into the ...
• Resolved properties of galaxy mergers from the MaNGA survey 

  Thorp, Mallory D. (2019-08-23)

  The complex and diverse populations of galaxies observed today form hierarchically through past galactic mergers. Interactions between galaxies of similar masses will drastically alter the morphology, chemical composition, ...
• Dwarf galaxy star formation histories in Local Group cosmological simulations 

  Digby, Ruth A. R. (2019-08-23)

  Dwarf galaxies are powerful tools in the study of galactic evolution. As the most numerous galaxies in the universe, they probe a diverse range of environments: some exist in near-isolation, allowing us to study how a ...
• The development of missing transverse momentum reconstruction with the ATLAS detector using the PUfit algorithm in pp collisions at 13 TeV 

  Li, Zhelun (2019-08-19)

  Many interesting physical processes produce non-interacting particles that could only be measured using the missing transverse momentum. The increase of the proton beam intensity in the Large Hadron Collider (LHC) provides ...
• The effects of sea ice on the tides in the Kitikmeot Sea: results using year–long current meter data from Dease Strait and tidal models 

  Rotermund, Lina M. (2019-08-06)

  We examine the tides in the Kitikmeot Sea using year-long time-series from moored instrumentation in Dease Strait, and a 3D barotropic numerical tidal model of the region. The in-situ data show strong tidal damping during ...
• Results of the 2018 ATLAS sTGC test beam and internal strip alignment of sTGC detectors 

  Carlson, Evan Michael (2019-07-16)

  Over the course of the next ten years, the LHC will undergo upgrades that will more than triple its current luminosity. This increase in luminosity will put greater demands on the ATLAS trigger system. To meet these demands, ...
• Design and evaluation of a Monte Carlo model of a low-cost kilovoltage x-ray arc therapy system 

  Breitkreutz, Dylan Yamabe (2019-06-28)

  There is a growing global need for proper access to radiation therapy. This need exists predominantly in low- and middle-income countries but exists in some high-income countries as well. The solution to this problem is ...
• The study and shielding of electromagnetic radiation from SuperKEKB electron and positron beam interactions 

  Beaulieu, Alexandre (2019-05-07)

  This project contributes to the research and development studies towards successful commissioning of the SuperKEKB electron-positron collider. This accelerator and storage rings complex aims at delivering the high-luminosity ...
• Microcomputed tomography dosimetry and image quality in preclinical image-guided radiation therapy 

  Johnstone, Christopher Daniel (2019-04-29)

  Motivated by the need to standardize preclinical imaging for image-guided radiation therapy (IGRT), we examine the parameters that influence microcomputed tomography (microCT) scans in the realm of image quality and absorbed ...
• Exploring energy extraction from Kerr magnetospheres 

  Taylor, Kate (2019-04-24)

  The aim of this thesis is to reconsider energy extraction from black hole magnetospheres, and more specifically the Blandford-Znajek (BZ) process from an effective field theory (EFT) perspective. Superradiant instabilities ...
• Gold nanoparticle uptake in synchronized cell populations and the effect on radiation sensitization 

  Rieck, Kristy (2019-04-16)

  To overcome the challenge in radiation therapy of delivering the prescribed dose to cancer cells while sparing normal tissue, preferential introduction of high Z material to tumour cells works as a method of radiation ...

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