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Asynchronous Polymorphic Logic Locking, Kelby Haulmark
Asynchronous Polymorphic Logic Locking, Kelby Haulmark
Graduate Theses and Dissertations
This work presents Asynchronous Polymorphic Logic Locking (APLL), a logic locking methodology that integrates polymorphic logic within the Multi-Threshold NULL Convention Logic (MTNCL) paradigm. APLL achieves Boolean satisfiability-attack resilience through a fault-based logic stripping approach followed by logic restoration, while leveraging the analog, dual-functionality of polymorphic gates to impede reverse engineering and removal attacks. In contrast to comparable SAT-resistant logic locking techniques, APLL provides inherent resistance to reverse engineering, reducing the viability of a broad class of attacks that rely on access to the locked netlist. A complete automated design flow is developed, enabling the transformation of combinational circuits into …
Old-Growth Surveys And Landowner Outreach In The Cross Timbers Of Oklahoma, Jon Webb
Old-Growth Surveys And Landowner Outreach In The Cross Timbers Of Oklahoma, Jon Webb
Graduate Theses and Dissertations
The Cross Timbers ecoregion represents a critical ecologic transition zone, spanning approximately 17 million acres across Oklahoma, Texas, Kansas, and Arkansas. Situated between eastern deciduous forests and the southern Great Plains, the Cross Timbers are dominated by drought-tolerant post oak (Quercus stellata) and blackjack oak (Quercus marilandica). Despite retaining some of the most extensive old-growth forests in the eastern United States, this ecoregion remains threatened by urban expansion, agricultural conversion, altered fire regimes, and eastern red cedar (Juniperus virginiana) encroachment. This project sought to identify, survey, and document large, previously un-surveyed or unreported tracts of old-growth Cross Timbers in Oklahoma, …
The Use And Implications Of Visual Production Choices: Evidence From Presidential Debates And Political Interview, Emma Lorraine Rasmussen
The Use And Implications Of Visual Production Choices: Evidence From Presidential Debates And Political Interview, Emma Lorraine Rasmussen
Graduate Theses and Dissertations
Live television production has long been a powerful tool for broadcasting media to curate what an audience sees and understands about aired material. Production techniques used by broadcasting companies have the power to influence how audiences perceive and interpret political candidates. In Study One, the two 2024 presidential debates were analyzed for a variety of different trends including: who was on screen, the different camera shots used, and camera movement. Video formats of the 2024 CNN and ABC debates were coded using Observer XT, a content analysis software and were examined for the frequency and duration of each behavior. Patterns …
“Blessed Solace”: Playing The Stoically Vulnerable Marmee, Marjorie Joann Gast
“Blessed Solace”: Playing The Stoically Vulnerable Marmee, Marjorie Joann Gast
Graduate Theses and Dissertations
In this thesis, I will explain my journey bringing a well-known literary character, Marmee March from Little Women: The Broadway Musical, to life on stage. This thesis will also discuss the development of my original one-person show Pearl, its drafts and iterations, and the intended future expansion of the piece. Finally, I will include my statement of artistry, production programs, posters, and photographs; website link, headshot, and resume.
Integrating People And Technology: Exploring The Validation Of The King And Hughes Hrd, Technology Ethics, And Leadership Scale, Hannah King
Graduate Theses and Dissertations
People and technologies have coexisted within organizations for centuries. In the wave of the fourth and fifth industrial revolutions, however, organizations must place an emphasis on ethically integrating new technologies, like artificial intelligence, alongside people in order to sustain a competitive advantage in the marketplace. A review of the literature identified a need for more research examining ethics in the use of technology by HRD professionals. The purpose of this descriptive research study was to assess the relationship between HRD activities, ethics, and technology and examine the influence that an organization’s code of ethics has on their integration. This study …
Fugues, Their History, And Their Status In The Twenty-First Century, William Sulliban
Fugues, Their History, And Their Status In The Twenty-First Century, William Sulliban
Graduate Theses and Dissertations
This thesis examines fugues from its first inception in the Renaissance to the twentieth century in order to contextualize fugal writing seen in the twenty-first century. The evolution of fugue through the twentieth century is the primary focus for the first chapter. For this, various music scores and academic scholarship are consulted to provide a foundational understanding of fugue. The second chapter examines contemporary fugue writing and explores how composers are approaching this very old compositional technique after several hundred years. Multiple twenty-first century compositions are discussed, as well as an interview I conducted with a composer to gain firsthand …
Validation Of Rice Tissue Sampling For In-Season Nutrient Management Of Nitrogen, Phosphorus, And Potassium, Tanner Smith
Validation Of Rice Tissue Sampling For In-Season Nutrient Management Of Nitrogen, Phosphorus, And Potassium, Tanner Smith
Graduate Theses and Dissertations
Nitrogen (N), phosphorus (P), and potassium (K) are the 3 most important nutrients involved in rice (Oryza sativa L.) growth and development. Tissue sampling has been proven to be a potential tool to provide inseason information about plant nutrient concentrations at specified timings and growth stages. With increased interest in tissue sampling and improving nutrient management effectiveness, more information is needed to validate plant tissue concentrations at which additional fertilizer inputs may be warranted. Experiments were conducted in 2024 and 2025 at the Rice Research and Extension Center (RREC) near Stuttgart, Ark.; Pine Tree Research Station (PTRS) near Colt, Ark.; …
Lumbopelvic Kinematics And Muscular Co-Contractions In Walking Prior To And Immediately Following A Bout Of Prolonged Standing., Stephanie Cotariu
Lumbopelvic Kinematics And Muscular Co-Contractions In Walking Prior To And Immediately Following A Bout Of Prolonged Standing., Stephanie Cotariu
Graduate Theses and Dissertations
Background: Prolonged standing is a common daily activity in a wide array of occupations, and approximately 44% of sample populations develop low back pain (LBP) during prolonged standing. Prolonged standing-induced LBP developers (“Pain Developers”) are three times more likely to develop clinical LBP and can therefore be considered a pre-clinical LBP population. Changes in typical gait have been observed in LBP patients, and walking has been hypothesized as being protective or preventive against LBP development. However, it is unknown whether Pain Developers exhibit similar kinematic adaptations to chronic LBP patients during common daily activities, such as walking. The exact muscular …
Recovery And Evaluation Of A Germanium Infrared Camera, Michael Paszek
Recovery And Evaluation Of A Germanium Infrared Camera, Michael Paszek
Graduate Theses and Dissertations
Short-wave infrared imagers made of germanium are a promising way to extend silicon-compatible imaging beyond the visible spectrum. They also use mature CMOS fabrication and readout electronics. This thesis details the recovery, initialization, and evaluation of a germanium focal plane array (FPA) infrared camera system using both a sealed TriWave camera and a modular prototype platform. Functionality was restored to this legacy hardware, and repeatable testing workflows were established for evaluating packaged infrared imagers under controlled indoor and outdoor conditions. The prototype used a custom software interface named Merlott for evaluation, and it followed a standard sequence that included checking …
Intraday Cotton Futures Price Responses To World Agricultural Supply And Demand Estimates (Wasde) News, Owen Mclane Tyrone
Intraday Cotton Futures Price Responses To World Agricultural Supply And Demand Estimates (Wasde) News, Owen Mclane Tyrone
Graduate Theses and Dissertations
Price discovery in agricultural futures markets is augmented by information about supply and demand, leading markets to react when public reports are released. Effective price discovery in futures markets is vital to allocate physical commodities across time, synthesize information, and provide hedging tools. Price discovery in cotton markets is unique because it is less liquid than many other commodity markets. Therefore, our objective is to measure the initial price response in the cotton futures market to unanticipated ending stocks information in the WASDE report; then determine if markets continue to adjust after the initial price change. To meet our objective, …
Fret Studies On The Binding Of Fibroblast Growth Factor (Fgf) Proteins To The Hard Corona Of Cuins2-Based Quantum Dots, Colette Robinson
Fret Studies On The Binding Of Fibroblast Growth Factor (Fgf) Proteins To The Hard Corona Of Cuins2-Based Quantum Dots, Colette Robinson
Graduate Theses and Dissertations
Fibroblast Growth Factor (FGF) has been shown to be an important protein in angiogenesis, which is critical in developmental biology and wound healing but has also been implicated in cancer metastasis. FGF interacts with an FGF Receptor (FGFR) to signal the onset of angiogenesis but the detailed mechanism of angiogenesis, and particularly its regulation, is still largely unknown. Imaging the interaction of FGF with FGFR in biologically-relevant environments, such as directly in cells, is key towards furthering this understanding and may eventually aid in the development of better cancer treatments. CuInS2/ZnS quantum dots (QDs) are an attractive fluorescent probe to …
Nadh Flim Reveals Cellular Bioenergetics And Mitochondrial Morphology During Drosophila Convergent Extension, Maria Espana Pena
Nadh Flim Reveals Cellular Bioenergetics And Mitochondrial Morphology During Drosophila Convergent Extension, Maria Espana Pena
Graduate Theses and Dissertations
Mitochondria are dynamic organelles that can fragment or fuse to support different bioenergetic demands and cellular processes, although the role of mitochondrial fission and fusion during embryonic development is not well understood. Fluorescence lifetime imaging (FLIM) of the mitochondrial cofactor NADH can be used to visualize mitochondrial networks and infer aspects of cellular bioenergetics in a label-free manner. We used NADH FLIM to test whether germband cells undergo changes in cellular metabolism during Drosophila convergent extension (CE)––a process in which hundreds of epithelial cells undergo coordinated intercalation to elongate the embryo. Contrary to our expectations, we did not observe significant …
Evaluation Of The Weed Control Efficacy And Potential Economic Returns Of An Autonomous Weeder In Vegetable Production Systems, Claire Plassmeyer
Evaluation Of The Weed Control Efficacy And Potential Economic Returns Of An Autonomous Weeder In Vegetable Production Systems, Claire Plassmeyer
Graduate Theses and Dissertations
Vegetable production requires intensive weed management. Conventional producers rely on herbicide applications to manage weeds effectively at low costs; however, growers are under pressure to minimize chemical use due to environmental concerns and increased incidences of herbicide resistance. Non-conventional systems, including organic and sustainably focused small-scale production, rely primarily on cultural practices and physical weed control methods, which are labor-intensive and costly due to limited labor availability and rising wages. These concerns have prompted the development of autonomous weeding devices, such as unmanned ground vehicles (UGVs) equipped with navigation sensors and implements to provide repeated, high-precision weed control. Compact devices …
"Pockets Of Existence" The Lighting Design For "Silent Sky", Faith Noel Spencer
"Pockets Of Existence" The Lighting Design For "Silent Sky", Faith Noel Spencer
Graduate Theses and Dissertations
This thesis will explore how lighting can express wonder, isolation, and discovery through the lens of the play Silent Sky by Lauren Gunderson. Produced at the University of Arkansas in February 2025, my design utilized shifts in color, intensity, and movement to mirror Henrietta Levitt’s pursuit of understanding within both science and society. This design sought to balance the expansiveness of the never ending universe with the intimacy of humanity, using lighting to bridge the vastness with isolation. Challenges in this production included creating a sense of infinite space within the confines of a proscenium theatre, having continuity across multiple …
A Journey And A Roadmap: Lessons Learned From Co-Creating An After-School Art Program With/For Newcomer Youth From Refugee Communities., Sally Anne Ball
A Journey And A Roadmap: Lessons Learned From Co-Creating An After-School Art Program With/For Newcomer Youth From Refugee Communities., Sally Anne Ball
Graduate Theses and Dissertations
This thesis focuses on my participation in a project developed in collaboration with a non-profit organization, Canopy NWA, with a goal to design and implement an after-school art program for newcomer youth from refugee communities that Canopy serves. This research inquiry is a self- study supported by observation, reflexive practice, and the use of a critical friend for mentorship, collaborative planning, group reflection, and co-developing and co-teaching curriculum. Through investigating my current teaching practices and my lack of experience teaching students from refugee communities, I set out to answer the following two questions: How will my art teaching practices develop, …
Optimizing Indigenous Timber Short-Gap Crossing Designs By Minimizing Wood Moisture Content, Robert Greenwood
Optimizing Indigenous Timber Short-Gap Crossing Designs By Minimizing Wood Moisture Content, Robert Greenwood
Graduate Theses and Dissertations
Reducing moisture content increases wood strength and reduces the weight of timber members. An accurate and efficient method for measuring moisture content is important for the design and construction of indigenous timber short-gap crossings. This study evaluates different methods for measuring moisture content in timber, describes a methodology for developing a representative moisture content value for a timber log, and approaches for quickly drying large timber logs. The results of this thesis will support activities in developing a representative moisture content of a log for structural design purposes and reducing weight for constructability purposes. The approaches discussed were developed considering …
High Test-Retest Reliability Of Nucleus Accumbens Activity During Reward Anticipation, Nathaniel Bouton
High Test-Retest Reliability Of Nucleus Accumbens Activity During Reward Anticipation, Nathaniel Bouton
Graduate Theses and Dissertations
Recent research has questioned the reliability of Functional Magnetic Resonance Imaging (FMRI). The findings suggest poor test-retest reliability of FMRI measures across brain areas and tasks, and specifically in subcortical brain areas during reward-related tasks. Further, data from the Adolescent Brain Cognitive Development (ABCD) study showed low reliability and low stability of the fitted coefficients from whole-brain regression analyses of the Monetary Incentive Delay (MID) task. However, optimizing methods might improve reliability, for example: (1) acquiring single-band rather than multi-band FMRI sequences, (2) extracting raw activity rather than fitted coefficients, and (3) honing analyses to target brain areas during specific …
Discriminative And Generative Video Modeling, Anh Pha Nguyen
Discriminative And Generative Video Modeling, Anh Pha Nguyen
Graduate Theses and Dissertations
Video modeling stands at the core of modern computer vision, enabling progress in domains such as surveillance, autonomous driving, and instructional assistance. Yet the complexity of spatiotemporal dynamics, multimodal integration, and the need for scalable and generalizable models present significant challenges. This dissertation addresses these issues from three complementary perspectives: discriminative modeling, multimodal (vision + language) alignment, and generative approaches, contributing new methods, datasets, and paradigms for advancing video understanding. In the discriminative setting, we propose a domain-adaptive framework for crowd counting that employs entropy minimization and adversarial learning to improve cross-domain generalization, and introduce a single-stage global association method …
Evaluating A Self-Guided Cognitive Behavioral Coping Skills Workbook For Sexual Violence-Exposed College Students Using A Nonconcurrent, Multiple Baseline Design, Marley F. Fradley
Evaluating A Self-Guided Cognitive Behavioral Coping Skills Workbook For Sexual Violence-Exposed College Students Using A Nonconcurrent, Multiple Baseline Design, Marley F. Fradley
Graduate Theses and Dissertations
College students endorse high rates of sexual violence victimization and posttraumatic stress disorder (PTSD). Help-seeking behaviors in college students are low and may be impacted by limited financial resources, competing obligations, treatment-related stigma, and features of PTSD such as avoidance, fear, and shame. Novel opportunities for sexually victimized college students to engage with trauma-focused interventions are necessary to mitigate the biopsychosocial consequences of PTSD. In a nonconcurrent, multiple baseline trial of a self-guided cognitive behavioral workbook for PTSD, sexual violence-exposed college students (N = 6) completed a 3-, 4-, or 5-week baseline period and then utilized the study workbook for …
Optimizing Cobb Mx X 500 Broiler Diets Through The Investigation Of Lysine And Energy Synergies, Soybean Processing “Add-Backs” Ingredients, And Soybean Genotype Amino Acid Selection, Savannah Caroline Wells
Optimizing Cobb Mx X 500 Broiler Diets Through The Investigation Of Lysine And Energy Synergies, Soybean Processing “Add-Backs” Ingredients, And Soybean Genotype Amino Acid Selection, Savannah Caroline Wells
Graduate Theses and Dissertations
This dissertation explored strategies to optimize Cobb MX x 500 broiler chicken nutrition by investigating lysine and energy synergies, the utilization of soybean processing by-products (“add-backs”), and soybean genotype selection for enhanced amino acid composition. Three independent but complementary research objectives were pursued to improve feed efficiency, sustainability, and cost-effectiveness in modern broiler production. The first objective assessed the interactive effects of dietary lysine and metabolizable energy (ME) on the performance and carcass traits of Cobb MX × 500 broilers. Using a central composite design, nine dietary treatments were formulated across multiple feeding phases. Results demonstrated that broiler performance responded …
Free Radical Reactions Of Electron Rich Alkenes, David A. May Jr
Free Radical Reactions Of Electron Rich Alkenes, David A. May Jr
Graduate Theses and Dissertations
Radical reactions have known for over a century but have only been thought of as useful synthetic strategies for the last 70 years. During this period, much work has been done to develop theoretical explanations for their reactivity and modes of termination, resulting in them becoming a fundamental type of organic reaction in academia and industry. Previous studies by the McIntosh group have shown that a radical [1,3]-Rearrangement occurs when N-substituted pyridines are heated. Here, the scope of this new reaction is expanded to include polycyclic pyridines including neocuproine (2,9-dimethylphenanthroline) and 2-methylquinoline while also expanding the range of reactions available …
Design And Optimization Of High-Frequency Medium-Voltage Dual Active Bridge Dc/Dc Converter Using Sic Device, Hui Cao
Graduate Theses and Dissertations
High frequency Dual Active Bridge (DAB) converters have become a key enabling technology in medium- and high-power applications such as renewable energy integration, electric vehicle fast charging, and emerging DC power distribution systems. However, when operating at high power and high frequency, DAB converters face critical challenges including limited soft-switching range, uneven semiconductor loss distribution, deadtime-induced resonance, switching-frequency constraints of wide-bandgap (WBG) devices, and transformer DC bias during dynamic transitions. This dissertation addresses these challenges through advancements in modulation strategies and converter architecture. First, an enhanced triple-phase-shift (E-TPS) modulation scheme is proposed to achieve balanced switching and conduction losses across …
Elucidating Neurocognitive Mechanisms Underlying Depression-Related Differences In Executive Control Under Stress, Benjamin Swanson
Elucidating Neurocognitive Mechanisms Underlying Depression-Related Differences In Executive Control Under Stress, Benjamin Swanson
Graduate Theses and Dissertations
Executive control under stress has been shown to be a robust predictor of psychopathology, especially Major Depressive Disorder (i.e., depression). However, the underlying neural mechanisms that might explain this association have not been examined. To address this gap, both controls (n = 30) and individuals with current or past depression (n = 30) completed a modified Stroop task under fMRI. Behaviorally, we assessed both participants’ executive control performance and their subjective affect during the task. At the neural level, we examined brain regions related to both executive-related control (e.g., DLPFC) and executive-related affective processes (e.g., amygdala, striatum), as well as …
Emotion Analysis And Neural Language Models For Classification, Andrew Mackey
Emotion Analysis And Neural Language Models For Classification, Andrew Mackey
Graduate Theses and Dissertations
Emotion analysis is a branch of artificial intelligence and natural language processing focused on recognizing emotions hidden throughout various forms of digital data, including text, images, and multi-modal representations. In this dissertation, we present four published and planned works that investigate different methodologies for natural language analysis tasks using deep learning techniques. The first published work we present considers the task of identifying fake news using various text and emotion representations. We demonstrate that emotion representations combined with word embedding techniques can improve the accuracy of fake news classification. Our second published work further investigates the fake news classification task …
Design And Development Of A Multi-Port Solid State Circuit Breaker Based On Half Bridge Sic Mosfets, Yannal Nawafleh
Design And Development Of A Multi-Port Solid State Circuit Breaker Based On Half Bridge Sic Mosfets, Yannal Nawafleh
Graduate Theses and Dissertations
This thesis investigates multi-port solid-state circuit breaker (M-SSCB) architectures that reduce steady-state conduction losses while preserving microsecond-class DC fault interruption and per-port selectivity. The proposed M-SSCB consolidates protection for several node interfaces into a single assembly with shared sensing, control, and a common energy-absorption branch. In normal operation, two electrically symmetric parallel semiconductor paths are established so each port’s current divides approximately in half; because conduction loss scales with current squared, the M-SSCB achieves ≈75% reduction in on-state loss relative to a conventional anti-series SiC path without increasing device count. During fault handling, the coordinated controller detects the local over-current, …
Automation And Upgrading Of Custom Cold Wall Uhv-Cvd Reactor For Group Iv Material Development, Alexander Golden
Automation And Upgrading Of Custom Cold Wall Uhv-Cvd Reactor For Group Iv Material Development, Alexander Golden
Graduate Theses and Dissertations
Group IV alloys have shown promising results for infrared optoelectronic applications where III-V materials are currently dominant. The III-V material system has vacancies that Group IV materials can fill, most importantly complementary metal oxide semiconductor (CMOS) process compatibility making quality devices much cheaper and widely available compared to the current state of the art. Silicon, being an indirect band gap Group IV material, has poor performance in optoelectronic applications but is the dominant material for most of the electronic industry. However, when silicon is alloyed or substituted with other group IV materials, these optoelectronic properties can be enhanced and, in …
Study And Simulation Of Model-Reference Adaptive Control Via The Heffron-Philips Model For Enhanced Power System Stability, Laila Ayman Dallol
Study And Simulation Of Model-Reference Adaptive Control Via The Heffron-Philips Model For Enhanced Power System Stability, Laila Ayman Dallol
Graduate Theses and Dissertations
Improving power transmission and quality has been an area of research interest over the past decades and was improved using renewable energy resources, mainly wind, and solar generation. Renewable energy penetration into power grids aims to replace some traditional synchronous generators, affecting the overall power system with reduced gas emissions that help with climate change and pollution issues. However, renewable generation in power systems ranging from microgrids to national grids is subjected to large disturbances that affect its transient stability, which is measured by its critical clearing time. As increased amounts of renewable generation connected to power systems have resulted …
Unraveling Nucleation Mechanisms In Membrane Distillation: A Molecular Dynamics And Enhanced Sampling Approach, Nazanin Abbasi
Unraveling Nucleation Mechanisms In Membrane Distillation: A Molecular Dynamics And Enhanced Sampling Approach, Nazanin Abbasi
Graduate Theses and Dissertations
Membrane distillation offers a promising route for desalination but remains limited by salt scaling, where mineral crystals nucleate and grow in concentrated brines. To inform strategies that mitigate scaling, this thesis investigates homogeneous nucleation in supersaturated aqueous NaCl solutions using molecular dynamics and enhanced sampling techniques. Several collective variables (CVs) are tested to capture the early stages of ion aggregation and crystal formation, including ion–ion coordination number, dehydration, and bond orientational order parameters Q₄ and Q₆. Enhanced sampling techniques, such as metadynamics and umbrella sampling, are employed to overcome the high free energy barriers associated with the formation of critical …
Multiple Aspects Of Environmental Temperature Have Complex Interactions With Avian Parental Behavior To Influence Offspring Outcomes, William H. Kirkpatrick
Multiple Aspects Of Environmental Temperature Have Complex Interactions With Avian Parental Behavior To Influence Offspring Outcomes, William H. Kirkpatrick
Graduate Theses and Dissertations
Anthropogenic climate change is projected to shift not only average temperatures across the globe, but also the amount of thermal variation experienced in the natural environment. Exposure to shifts in averages and a wider range of thermal experiences will cause shifts in wildlife behavior. In avian species, behaviors exhibited during reproduction have implications for the well-being of their offspring. Here, I explore specific incubation behaviors in four species: Scaled Quail (Callipepla squamata), Northern Bobwhite Quail (Colinus virginianus), Tree Swallows (Tachycineta bicolor), and Eastern Bluebirds (Sialia sialis). I examined constancy, or the percentage of time on the nest, and off-bout duration, …
Using Color And Fluorescent Spectrometry As A New Rapid Cleaning Verification Method In Poultry Processing Plants, Clark Griscom
Using Color And Fluorescent Spectrometry As A New Rapid Cleaning Verification Method In Poultry Processing Plants, Clark Griscom
Graduate Theses and Dissertations
The poultry industry is expected to be growing at 3% in the total global market with the U.S. being the largest producer of poultry meat. Poultry processing plants are expected to produce 140 birds per minute with the potential of up to 175 birds per minute to meet the market demand. With the growing market and need for faster production, maintaining food safety needs to be a priority to ensure the safety of consumers. Over 9.9 million foodborne illness cases are reported each year in the United States. A change in food safety is needed, and one area lacking is …