Now showing items 1-20 of 13366

    • Developing Novel and Interdisciplinary Methods for DNA Detection and DNA Structure Profiling 

      Li, Jiaming (2021-11-30)
      Understanding the secondary structures of nucleic acid polymers, i.e. DNA and RNA, is fundamentally important for both biochemistry and molecular biology, as structures often influence biological function, such as the affinity of protein binding and accessibility to DNA-binding drugs. Software currently used to predict secondary structures of nucleic ...
    • Converting Plastic Waste Into Graphene and Materials for Carbon Dioxide Capture 

      Algozeeb, Wala (2021-11-30)
      Plastic waste (PW) is becoming one of the greatest environmental challenges of the 21st century. Due to the low cost of plastic production, it is extremely challenging to find an economical PW recycling method, making landfilling the least expensive way to deal with PW. Plastic, when landfilled, undergoes photochemical degradation producing microplastics, ...
    • Theoretical and Computational Investigations into the Nanomechanics and Growth of Low Dimensional Materials 

      Gupta, Nitant (2021-11-30)
      This thesis presents research that has been driven towards the exploration and exploitation of the fundamental inter-atomic interactions in low-dimensional crystalline materials like nanotubes and graphene. A special focus has been maintained on understanding their mechanical behavior which is directly related to the strength of these interactions ...
    • Construction of active sites for electrocatalysis on carbon materials 

      Wang, Zhe (2021-11-30)
      With the rapid increase of greenhouse gas emissions, there is an urgent need to produce fuels like dihydrogen (H2) and chemicals like ammonia (NH3) and hydrogen peroxide (H2O2) in a cleaner and more efficient way. Electrochemical conversions of dinitrogen (N2), dioxygen (O2), carbon dioxide (CO2) and water (H2O) can afford fuels and chemicals with ...
    • Wave function theories for finite-temperature electronic structure 

      Harsha, Gaurav (2021-11-30)
      Wave function methods have offered a robust, systematically improvable means to study the ground-state properties in quantum many-body systems. Theories like coupled cluster and their derivatives provide highly accurate approximations to the energy landscape at a reasonable computational cost. Analogs of such methods to study thermal properties, ...
    • Statistical Methods for Multivariate Outcomes with Applications to Biomedical Data 

      Ding, Maomao (2021-11-29)
      The analysis of multivariate outcomes is common practice in biomedical studies when independence between outcomes cannot be assumed. Various mechanisms can create dependence in the multivariate outcomes. In this thesis, we consider statistical tools for three settings: competing risks data, multivariate outcomes for comprehensively capturing ...
    • Development and Applications of Neuromusculoskeletal Modeling Software for Personalized Treatment Design 

      Vega, Marleny (2021-11-29)
      One in eight adults with a disability suffer from walking impairments were amputation, osteoarthritis, rheumatoid arthritis, multiple sclerosis, spinal cord injury, stroke, and traumatic brain injury are the most common conditions responsible. Along with other movement impairment conditions such as cerebral palsy, Parkinson's disease, and orthopedic ...
    • Enhancing Membrane Distillation Performance Using Carbon Nanomaterials 

      Xin, Ruikun (2021-11-22)
      Membrane distillation (MD) is a promising technology to treat high salinity wastewater, but the high operational cost, lack of comprehensive understanding in its heat and mass transfer, and limited ability in treating various wastewater (e.g., low surface tension wastewater, volatile contaminants rich wastewater, etc.) have impeded its translation ...
    • Toward Efficient and General Multi-Modal Planning 

      Kingston, Zachary (2021-11-22)
      Complex robotic systems like mobile manipulators and humanoids will soon be employed outside the highly-structured domain of factories, entering cluttered kitchens, warehouses, and even space stations (e.g., NASA's Robonaut 2). For a robot to be effective in these domains, it is essential that the robot be able to manipulate and navigate the environment ...
    • Conflicting Loyalties: Mormon Americanization, Sectarianism, and Gender Ideology in Utah’s Spanish- and Philippine-American Wars Experience 

      DeLoach, CarrieAnne Simonini (2021-11-22)
      This case study incorporates gender, class, demographic, and cultural analysis to examine a religious minority's plea for the recognition of its Americanness at a critical moment of imperial expansion. The Spanish-American War offered Latter-day Saints an opportunity to prove their loyalty to the United States because it occurred two years after Utah ...
    • Neutron scattering studies on FeSe, Ce2Zr2O7, BaNi2(AsO4)2, and Ni2Mo3O8 

      Chen, Tong (2021-11-22)
      Neutron scattering is a powerful and versatile technique to probe spin-spin cor- relations in condensed matter physics. In this thesis, we present our work using neutron scattering to investigate the interplay of magnetism and superconductivity in the iron-based superconductor FeSe, the ground state of the quantum spin liquid candidate Ce2Zr2O7, ...
    • Versatile Compressive Sensing: Extensions of Random Projections for Imaging and Machine Vision 

      Giljum, Anthony T. (2021-11-17)
      Compressive imaging is a versatile approach to sensing that offers the potential to dramatically reduce data acquisition time by multiplexing the scene with a spatial light modulator below than the Nyquist rate. The trade-off, however, is a high reconstruction time that limits real-time applications. The first half of this thesis will focus on ...
    • Constitutive Modeling of Friction in Bolted Connections 

      Porter, Justin H. (2021-11-16)
      Bolted joints are ubiquitous in mechanical engineering, requiring accurate models to optimize designs. However, the exact nature of frictional contact between components is unknown and poses a significant challenge to modeling the nonlinear vibration of assemblies. This thesis applies empirical and physics-based modeling approaches to identify ...
    • Epileptic Seizure Prediction Using Spectral Width of The Covariance Matrix 

      Esmaeilpourmoghaddam, Dorsa (2021-11-16)
      Epilepsy is a common neurological disorder in which patients suffer from sudden and unpredictable seizures. The brain dynamics that lead to seizure formation and termination are mysteries that have been studied for many years. This research introduces a simple yet accurate array-based method to study seizures and predict them. We use the CHB-MIT ...
    • "The Turbaned Heads, Each Wrapped in Twisted Folds of the Whitest Silk": Images of Muslims in Netherlandish Art, 1400-1700 

      Van Wingerden, Carolyn (2021-11-11)
      This dissertation brings together a wide variety of print images of Muslims by Netherlandish artists from the early modern period, roughly 1400 to 1700. While scholars have studied early modern Italian and German images of Muslims in some detail, no study until now specifically focuses on the woodcuts, engravings, and etchings of Muslims by Dutch and ...
    • Role of melting in mechanical ignition of the CuO/Al thermite reaction 

      Parra, Carlos (2021-11-04)
      Mechanical ignition of thermite reactions remains poorly understood due to a lack of known experimental methods to assess reaction pathways at microstructural length scales under well-defined loading conditions. The present work addresses this challenge using small-scale impact experiments and complementary hydrocode simulations to assess the Al/CuO ...
    • Cache-Efficient Graph Algorithms for Near Neighbor Search 

      Coleman, Ben (2021-11-01)
      Graph search has recently become one of the most successful algorithmic trends for near neighbor search. Several of the most popular and empirically successful algorithms are, at their core, a simple walk along a pruned near neighbor graph. Such methods consistently outperform other approaches and are a central component of industrial- scale information ...
    • Queer Subcultural Integration and the Search for Community in the Modern Metropolis 

      Turner, Katie Lane (2021-11-01)
      Using new interview data collected from transgender, nonbinary, and others across the LGBTQ+ spectrum in Atlanta, GA, this study analyzes how, upon first moving to a sprawling metropolis, queer people integrate into queer subcultures as a way to find community. Participants report that finding queer networks not only provides a sense of normalcy and ...
    • Photothermoelectric response and hot carrier tunneling in gold nanowires 

      Abbasi, Mahdiyeh (2021-10-27)
      The thermoelectric effect is the conversion of electrical to thermal energy and vice versa. In the photothermoelectric effect (PTE), photons are used as a heat source to apply a temperature distribution. Photodetectors based on PTE can be made. If we wisely choose noble metals in our PTE-based photodetectors, we can use the plasmonic characteristic ...
    • Constraining Turbulence in Protoplanetary Disks 

      Weaver, Erik Thomas (2021-10-22)
      Our understanding of the formation of planets hinges on the study of protoplanetary disks. These disks of dust and gas form alongside young stars, and are the birthplace of planetary systems. Critical to understand- ing the myriad physical mechanisms governing the formation of planets is the turbulence in protoplanetary disks, which has thus far ...