Now showing items 1-20 of 13342

    • "How American Am I?": Comparing American Identity among US Black Muslims 

      Ferguson, Jauhara (2021-10-21)
      Much sociological attention has focused on Black identity within the United States. Less attention, however, has been given to understanding how immigrant and native-born streams of US Black Muslims articulate American identity, a particularly important empirical gap given the connections among race, religion, and national identity. In this study I ...
    • Structural and functional studies of the envelope protein and viral polymerase in Hepatitis B Virus 

      Lin, Zihan (2021-10-18)
      Hepatitis B Virus (HBV), a member of the Hepadnaviridae family, is a serious pathogen that causes chronic Hepatitis B and affects over 350 million people globally. Though a vaccine has been available since 1982, it cannot cure established infections and their effectiveness in preventing blood-borne transmission from an infected mother to her infant ...
    • Drivers and consequences of animal foraging behavior on seed dispersal and plant community composition 

      Tonos Luciano, Jadelys M (2021-10-11)
      Dispersal is essential to coexistence and community assembly. Animal dispersal is particularly important in hyper-diverse tropical communities. However, dispersal is generally represented simplistically, ignoring its behavioral basis and the resulting variation among species and individuals. Though the importance of behavior is increasingly ...
    • Compressed Sensing Spectroscopy and Dynamic-Rate Neural Network Classification 

      Liu, Weidi (2021-10-07)
      Compressive sensing (CS) is an approach for efficient signal acquisition based on the compressibility of the data and allowing the reconstruction signals below the Shannon-Nyquist sampling rate. Besides imaging, compressive sensing can be exploited in spectrometer design. Here we have constructed and compared a broadband, high resolution Echelle ...
    • Spatiotemporal Extreme Value Modeling with Environmental Applications 

      Fagnant, Carlynn (2021-10-06)
      Extreme value analysis (EVA) is essential to evaluate the extreme events brought on by natural hazards in the environment. Particularly, EVA informs risk assessment for communities, which is crucial to protecting people and property. This work focuses on an application to extreme rainfall in the Houston, TX region and Harris County, and performs ...
    • Implementing Next Generation of Wireless Communications with Multi-Tier Millimeter-Wave Networks: Performance Analysis and Design Insights 

      Jia, Shuqiao (2021-10-05)
      Future communication systems operating in millimeter wave (mmWave) are heralded as a promising solution for the ever-increasing network throughput demand. Motivated by feasibility results, recent research has considered a network connecting user terminals, access points (APs), and backhaul with a single frequency. Such a novel unified access-backhaul ...
    • Ultrafast Transient Absorption Measurements on Plasmonic and Plasmon-Mediated Systems 

      Chapkin, Kyle David (2021-10-04)
      The interaction between light and plasmonic nanoparticles has been a long studied and ever-expanding area of research due to the unique ability of plasmons to focus light at the nanoscale as a result of their collective electron resonances. This property has resulted in many applications including photocatalysis, chemical sensing, and surface-enhanced ...
    • Kinetics of BaSO4-BaxSr1-xSO4-SrSO4 mineral crystallization: Prediction and control 

      Zhao, Yue (2021-09-29)
      Mineral crystallization is ubiquitous in various industrial processes. Among all the mineral scales, sulfate minerals, such as barite (BaSO4) and celestite (SrSO4), are commonly discovered during the production. Due to the wide coexistence of Ba2+ and Sr2+, BaxSr1-xSO4 solid solution is also frequently discovered in industrial processes. Scale ...
    • Studies of Cu-catalyzed installation and photochemical removal of peptide N-H modifications 

      Wang, Haopei (2021-09-17)
      Methods for selective modification of peptides are important for chemical biology and pharmaceutical industries. Among many reagents for modification, boronic acids have become a popular reaction partner for peptide under mild conditions. On the other hand, nitro aryl compounds have various roles in nature and industries. Its photosensitive properties ...
    • Multi-scale hydrogel stereolithography for vascular tissue engineering & microphysiologic systems 

      Sazer, Daniel Warren (2021-09-17)
      Throughout all the known kingdoms of life, organisms must fight against entropy to build and maintain unique structural features that drive biological function. The field of tissue engineering seeks to recreate these structure-function relationships with carefully constructed assemblies of specialized cells and extracellular matrix components like ...
    • How to Group: From Time Series to Manifold 

      Cosentino, Romain (2021-09-17)
      This thesis addresses the problem of data representation for pattern recognition by focusing on three fundamental properties: the efficiency, adaptivity, and interpretability of the representation. The century of progress in harmonic analysis led to the development of theoretically sounded and interpretable tools to decompose, analyze, and process ...
    • Thermodynamic Modeling of Patchy Colloid Self-Assembly and Phase Behavior 

      Zhu, Yiwei (2021-09-15)
      Patchy colloids are colloids with functional patches on its surface. Research on patchy colloids has attracted ongoing interest since the fabrication of patchy colloids with different number, size, shape, and relative location of attractive surface patches makes patchy colloids a good candidate as building blocks to form much more complex advanced ...
    • A computational mechanics framework for modeling tribology experiments with friction and wear 

      Lawal, Iyabo G (2021-09-01)
      An interface is formed when a minimum of two parts are in contact. Loading of the interface occursat the contact patch, which ranges in dimension depending on the contact geometry. The contact patch is the apparent area of contact of the two surfaces; multiple contact patches may exist on a given interface. The input load on the interface can be ...
    • Chemistry Mediated Mechanical Behavior of Inorganic Nanostructures 

      Rehn, Sarah M (2021-08-31)
      Unique and fascinating chemistry transpires at surfaces that cannot take place in bulk materials due to the presence of dangling bonds as well as strained or otherwise unusual coordination environments. As the size of an object becomes smaller, the fraction of surface atoms to bulk atoms increases. Ultimately, for nanometer-sized particles, surface ...
    • Large contribution of light-dependent oxygen uptake to global O2 cycling 

      Valerio, David Armando (2021-08-31)
      The oxygen triple-isotope composition (Δ′17O = δ′17O - θ × δ′18O) of tropospheric O2 is an important parameter used in mass-balance proxy estimates of gross oxygen productivity in the modern ocean and the global biosphere. We created a chemical reaction network box model of the Δ′17O budget of tropospheric O2 to examine the key controls on the oxygen ...
    • Automata Linear Dynamic Logic on Finite Traces 

      Smith, Kevin Wayne (2021-08-27)
      Temporal logics are widely used by the Formal Methods and AI communities. Linear Temporal Logic is a popular temporal logic and is valued for its ease of use as well as its balance between expressiveness and complexity. LTL is equivalent in expressiveness to Monadic First-Order Logic and satisfiability for LTL is PSPACE-complete. Linear Dynamic Logic ...
    • A Comprehensive Data Set of CFRP Impact Damage Accumulation Through a Novel Impact Experimental Setup 

      Pasupuleti, Shashank (2021-08-25)
      In the following work, a low-velocity impact pendulum inspired by the Charpy and Izod testing impact pendulum was designed and manufactured to examine the in-plane strain response of IM7/8552-1 carbon fiber/epoxy composite specimens under the CFCF plate condition. The pendulum itself covers an impact energy range similar to the Charpy and Izod ...
    • Direct visualization of ultrafast lattice ordering via resonant electron-phonon coupling in 2D hybrid perovskites 

      Zhang, Hao (2021-08-25)
      Understanding and tracing the dynamic interactions between charge carriers and crystal lattice has remained a challenge in photo-excited semiconductors. Specifically, a direct visualization of carrier-lattice interactions (electron-phonon coupling) provides crucial insights in such as hot-carrier lifetime and recombination rates, which are key factors ...
    • Biophysically Plausible Learning in the Brain via Eligibility Traces: Cortical Sequences, Hippocampal Place Cells, and Dopaminergic Reward Prediction Error 

      Cone, Ian (2021-08-25)
      The brain’s ability to learn and associate temporally distal stimuli is one of its most fundamental (and puzzling) functions. The behaviorally relevant time scales (hundreds of milliseconds to seconds) at which the brain must link actions to reward are largely incompatible with Hebbian or STDP-like correlative learning rules. To solve this conundrum, ...
    • Understanding the structural properties in two-dimensional halide perovskites under external stimuli 

      Li, Wenbin (2021-08-23)
      Understanding the structural and electrical behaviors of organic-inorganic (hybrid) halide perovskites under practical environments is critical for building an efficient and stable optoelectronic device. In this thesis, we report a light-activated interlayer contraction in 2D hybrid halide perovskite. This effect is reversible and is strongly dependent ...