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Thermo-Mechanical Advancements For Very High Strength And Ultra High Performance Concretes, Lana Grayson Brown Sisung
Thermo-Mechanical Advancements For Very High Strength And Ultra High Performance Concretes, Lana Grayson Brown Sisung
Theses and Dissertations
Interest in the use of high-strength concrete (HSC) has increased in recent years with demand for improved concrete performance. HSCs are widely associated with high heat of hydration and elusive behavior when exposed to high temperatures commonly occurring in mass structures. The optimization of HSC mixture proportioning is difficult due to a wide variety of constituents that influence thermal and mechanical properties. Additionally, determining in-place properties of mass concrete placements is elusive, and there are currently minimal to no test methods available that are both predictive and a direct measurement of mechanical properties. The objective of this dissertation is to …
Assessing Species Status And Genetic Diversity In The Tombigbee Darter (Etheostoma Lachneri), Caroline Nicole Teal
Assessing Species Status And Genetic Diversity In The Tombigbee Darter (Etheostoma Lachneri), Caroline Nicole Teal
Theses and Dissertations
The Tombigbee Darter (Etheostoma lachneri) is the sole member of the snubnose subgenus Ulocentra endemic to the Tombigbee River Watershed of Mississippi and Alabama. Etheostoma lachneri is a species of greatest conservation need, due to suspected population decline since 1994 (Suttkus et al., 1994). To assess the persistence and genetic variability of E. lachneri, a population survey at 40 historical sites in Mississippi was performed. Results showed that 12 out of the 40 sites did not have E. lachneri present. Genomic analyses were conducted for populations across the species range using ddRADseq, revealing the possible complex of three species. To …
Estimating Reliability Of Electric Vehicle Charging Ecosystem Using Principle Of Maximum Entropy, Himanshu Tripathi
Estimating Reliability Of Electric Vehicle Charging Ecosystem Using Principle Of Maximum Entropy, Himanshu Tripathi
Theses and Dissertations
This thesis addresses the challenge of estimating electric vehicle (EV) charging system reliability against unpredictable threats like cyberattacks and extreme weather, where traditional methods fail. We utilize the Principle of Maximum Entropy (PME), a statistical tool that provides unbiased risk estimates using limited information. Applied to the EV charging ecosystem, our case study shows how PME models stress factors to predict failures and optimize maintenance. This approach extends beyond EVs to other complex systems with scarce data, such as smart grids or healthcare devices. By linking uncertainty directly to reliability, PME offers a universal method to improve decision-making under unpredictable …
Optimizing Osb Quality: Assessing The Influence Of Beta-Cyclodextrin With Essential Oil Treatments, Ethan Garrett Turo
Optimizing Osb Quality: Assessing The Influence Of Beta-Cyclodextrin With Essential Oil Treatments, Ethan Garrett Turo
Theses and Dissertations
This study evaluated the mechanical and dimensional performance of oriented strand board (OSB) panels treated with beta-cyclodextrin-essential oil compounds, including betacyclodextrin-only, beta-cyclodextrin-trans-cinnamaldehyde, beta-cyclodextrin-thymol, and betacyclodextrin-nickel. OSB panels were produced using a proprietary spraying system and Dieffenbacher press and tested according to ASTM standards for internal bond strength, modulus of elasticity (MOE), modulus of rupture (MOR), water absorption, and thickness swelling. Results showed that beta-cyclodextrin-trans-cinnamaldehyde enhanced MOE and MOR, while beta-cyclodextrin-thymol significantly improved internal bond strength. Beta-cyclodextrin-nickel demonstrated strong performance in both mechanical strength and water resistance. However, 24-hour submersion results indicated that water resistance may be surface limited. All treatments …
Non-Thermal Dbd Plasma-Induced Co₂ Capture And Conversion To Value Added Chemicals, Chinwendu Theresa Umeojiakor
Non-Thermal Dbd Plasma-Induced Co₂ Capture And Conversion To Value Added Chemicals, Chinwendu Theresa Umeojiakor
Theses and Dissertations
Electrified CO2 conversion via nonthermal dielectric-barrier discharge (DBD) plasma presents a promising pathway for integrating renewable energy into the carbon cycle, addressing the dual challenges of CO2 reduction and sustainable fuel generation. In this research, DBD plasma technology was integrated with a sorbent material and/or catalytic materials for CO2 desorption and conversion. Specifically, with Ni/Al2O3 as the catalyst, we investigated CO2 splitting (CO2 to CO and 0.5O2) and hydrogenation (CO2 and H2 to CO and H2O) under adiabatic and subcooled conditions. We find that CO2 splitting shows higher efficiency than hydrogenation, particularly at relatively lower power inputs. While CO2 hydrogenation …
Academics Vs Athletics: Prioritizing The Students In Student-Athletes And The Importance Of Their Return To The Classroom, Stephen Walker
Academics Vs Athletics: Prioritizing The Students In Student-Athletes And The Importance Of Their Return To The Classroom, Stephen Walker
Theses and Dissertations
The Mississippi High School Activities Association (MHSAA) aims to enhance student- athletes' educational experiences but Law 6.5.1 inadvertently causes students to miss 300 hours of academic instruction annually. This dilemma forces school districts to choose between robust sports programs and rigorous academic schedules, ultimately creating a disadvantage for students. While participation in sports has been linked to improved academic performance, the current structure disproportionately allocates resources to athletics over academics, with only 51% of schools offering after-school academic programs compared to 77% for sports. This paper discusses the benefits of sports, including higher attendance and graduation rates, but also highlights …
An Examination Of Potential Occupational Horizons And Site Integrity Through Site Formation Processes At Aklis, St. Croix, Jesse Weaver
An Examination Of Potential Occupational Horizons And Site Integrity Through Site Formation Processes At Aklis, St. Croix, Jesse Weaver
Theses and Dissertations
The Aklis Site, located in the Sandy Point National Wildlife Refuge on St. Croix, contains both an artifact-dense shell midden and numerous human burials actively eroding into the Caribbean Sea. Here I examine the records and collections from the site through the lens of site formation theory to ask: (1) Are there detectable occupational horizons within the midden?; (2) To what extent have cultural and non-cultural transforms affected the integrity of the midden? and; (3) If detected, are these occupational horizons of sound enough integrity to allow for future radiocarbon dating that might clarify culture chronology for the greater West …
Bridging Physics And Machine Learning: Physics-Informed Neural Networks (Pinn) For Wire-Arc Additive Manufacturing (Waam) Thermal Prediction, Haiye (Justin) Xie
Bridging Physics And Machine Learning: Physics-Informed Neural Networks (Pinn) For Wire-Arc Additive Manufacturing (Waam) Thermal Prediction, Haiye (Justin) Xie
Theses and Dissertations
Over the past decade, additive manufacturing (AM) has gained substantial use in industry and research. It is a promising alternative to traditional subtractive and casting manufacturing. AM not only saves time and materials but can also construct intricate structures within components for specific purposes. Wire-Arc Directed Energy Deposition (WA-DED) is one of the additive manufacturing technologies that offers a high extrusion rate of metal wire materials to fabricate near-net-shape metal components. Accurate temperature control is crucial for controlling the microstructure of metal components fabricated through the AM process. Machine learning has the ability to analyze real-time sensor data, such as …
Optical Trapping For The Study Of The Chemical And Physical Dynamics Of Single Particles, Yukai Ai
Optical Trapping For The Study Of The Chemical And Physical Dynamics Of Single Particles, Yukai Ai
Theses and Dissertations
This dissertation explores the combined technique of optical trapping and Raman spectroscopy (OT-RS) to study the physical and chemical properties, as well as the dynamic surface changes, of single aerosol particles in air. The study covers a wide range of aerosol types, including bioaerosols (such as pollen, bacteria, and fungi), dust particles (such as black carbon, terrestrial, and extraterrestrial materials), and liquid droplets (such as sea-spray aerosols). The optical trapping system used in this work is based on the universal optical trap (UOT), which is capable of trapping and manipulating a wide variety of particle types. These include both transparent …
Seasonal Variation In Modulus Of Cement-Treated Base Layers And Untreated Base Layers In Utah, Mason Robert Kessler Millard
Seasonal Variation In Modulus Of Cement-Treated Base Layers And Untreated Base Layers In Utah, Mason Robert Kessler Millard
Theses and Dissertations
The objective of this research was to compare the stiffness of cement-treated base (CTB) layers and untreated base course (UTBC) layers in a cold region through a typical year. The scope of work included testing of three residential pavement segments comprising CTB layers and two comparable pavement segments comprising UTBC layers in northern Utah. Design thicknesses were verified through drilling and dynamic cone penetrometer testing in September 2024. Following 3 to 15 years of service, the sites were evaluated using portable falling-weight deflectometer (PFWD) testing in May 2024, July 2024, September 2024, November 2024, January 2025, and March 2025. After …
Rotor Interaction Aerodynamics: Influence Of Phase And Spacing On Wake And Pressure Behavior, Nathan D. Welker
Rotor Interaction Aerodynamics: Influence Of Phase And Spacing On Wake And Pressure Behavior, Nathan D. Welker
Theses and Dissertations
This dissertation explores the aerodynamic behavior and interactions in the flow-fields of dual rotor systems. The experiments used Particle Image Velocimetry (PIV) combined with pressure and force measurements to characterize the flow with an emphasis on side-by-side rotor flows at small separation distances. This work is separated into six main chapters: first, the topic is introduced with a thorough literature review in Chapter 1, the methodology and details of the experiments are discussed in detail in Chapter 2; the effects of phase offset on dual-rotor rotor flows is explored in Chapter 3; the influence of separation distance on the side-by-side …
Recreation Effects On Soil Carbon, Biocrust Presence, Soil Stability, And Invasive Species In Indian Creek, Bears Ears National Monument, Elisabeth M. Currit
Recreation Effects On Soil Carbon, Biocrust Presence, Soil Stability, And Invasive Species In Indian Creek, Bears Ears National Monument, Elisabeth M. Currit
Theses and Dissertations
Desert ecosystems perform essential ecosystem services, including playing a crucial role in the global carbon cycle. Because of this, it is important to understand how recreational activities, common in desert environments, impacts dryland ecosystems' ability to perform ecosystem services. The growing popularity of outdoor recreation in Western US poses a threat to desert ecosystems, and unregulated activities can harm soil health, particularly the presence and functioning of biological soil crusts (biocrusts). This study uses the Indian Creek Special Recreation Management area in Bears Ears National Monument, Utah, USA, as a case study for recreation impacted desert ecosystems. It examines the …
Consequences Of The Double Empathy Problem Within The Clinical Environment: A New Model For Neuroinclusive Care, Sofia Jimenez
Consequences Of The Double Empathy Problem Within The Clinical Environment: A New Model For Neuroinclusive Care, Sofia Jimenez
Theses and Dissertations
As diagnoses of autism spectrum disorder (ASD) rise, the neurodiversity and autistic self-advocacy movements have challenged traditional deficit-based clinical models and called for more inclusive, affirming approaches to care. Recent research disputes the long-held belief that autistic individuals have deficits in perspective-taking, revealing that miscommunication between autistic and neurotypical individuals results from mutual misunderstanding, a concept known as the double empathy problem (DEP; Milton, 2012), with the triple empathy problem (TEP) extending this framework to healthcare settings. Our study investigates the consequences of the DEP and TEP within clinical environments, focusing on interactions between neurotypical speech-language pathologists (SLPs) and adult …
Coding For Nonstandard Channels: A Capacity-Oriented Approach, J Daniel Harman
Coding For Nonstandard Channels: A Capacity-Oriented Approach, J Daniel Harman
Theses and Dissertations
This work addresses the issue of coding for non-standard channel models with an emphasis on capacity-oriented channel analysis and system design. The first channel studied is the Wyner wiretap channel. Channel sounding results were obtained to calculate the capacity for the multi-antenna case of the Wyner wiretap channel to ascertain the potential for secure communication via secrecy coding. The second channel studied is an asymmetric binary crossover erasure channel (ABCEC) with a short-blocklength constraint. The capacity for this channel was derived, and linear codes were chosen and tested. Another study was conducted on the ABCEC within a degraded wiretap channel …
Exploring Soil-Derived Antimicrobials For Inhibiting Dairy-Associated Pathogens And Spoilage Bacteria, Michael Joseph Moran
Exploring Soil-Derived Antimicrobials For Inhibiting Dairy-Associated Pathogens And Spoilage Bacteria, Michael Joseph Moran
Theses and Dissertations
Spore-forming bacteria are among the most problematic contaminants in fluid milk. They can survive pasteurization, grow at refrigeration temperatures, and secrete heat-stable enzymes, making them a major cause of spoilage in both pasteurized and reconstituted milk products. Current nonthermal strategies for reducing spore counts, including microfiltration and bactofugation, are often costly and inconsistent. The increasing consumer demand for natural additives in food products has sparked interest in the use of bacterially-derived antimicrobial compounds, particularly those from generally recognized as safe (GRAS) organisms, as an alternative method of dairy preservation. This study explores the antimicrobial potential of ten soil-derived Bacillus and …
Perspectives On Career Advising At A Large Private Religious Institution, Lane Toshio Muranaka
Perspectives On Career Advising At A Large Private Religious Institution, Lane Toshio Muranaka
Theses and Dissertations
This study examines the role of career advising at Brigham Young University (BYU), a faith-based institution where professional guidance focuses on spiritual development and purpose-driven learning. Through qualitative interviews with career advisors across various disciplines, the research explores how advisors define student success, integrate faith into their advising practices, and support students in aligning their career aspirations with personal meaning and the university's religious mission. Grounded in the belief that holistic education fosters lifelong success, BYU emphasizes the development of the "total person," including moral and spiritual dimensions. Findings reveal that student success is not solely measured by employment outcomes …
Opposing Roles For Iron Transport Systems In Gallium Tolerance In Extraintestinal Pathogenic Escherichia Coli, Nagama Parveen
Opposing Roles For Iron Transport Systems In Gallium Tolerance In Extraintestinal Pathogenic Escherichia Coli, Nagama Parveen
Theses and Dissertations
Iron is required for bacterial growth because it serves as a co-factor for enzymes involved in DNA synthesis, cellular respiration, and other processes. Disrupting bacterial iron homeostasis is an effective strategy to prevent the growth of antibiotic-resistant bacteria, and gallium (Ga³⁺) has emerged as a promising candidate due to its ability to displace iron (Fe³⁺) and prevent essential iron-dependent pathways. However, Escherichia coli are naturally less sensitive to gallium than many other bacteria, and the mechanisms that control gallium tolerance are not completely understood. To address this, we performed a genome-wide transposon sequencing (TnSeq) screen to identify genes important for …
Feasibility Of A Novel Combined Treatment For Apraxia Of Speech, Claire Evans Jensen
Feasibility Of A Novel Combined Treatment For Apraxia Of Speech, Claire Evans Jensen
Theses and Dissertations
Apraxia of speech (AOS) is a disorder of articulation and prosody interrupting the spatial and temporal planning and/or programming of speech movements and commonly co-occurs with aphasia. Most AOS treatment research has used single case experimental designs (SCEDS) to document the effects of treatment. The strength of SCEDs is that they can demonstrate clear causal relations between intervention and behavior change. The most studied AOS treatment is an articulatory-kinematic treatment called Sound Production Treatment (SPT). This study was designed to examine the effects of a novel treatment, Sound Production Treatment in a Metrical- Paced Frame (SPTMF), on the speech production …
Enhanced Nanomechanical, Tribological And Electrical Properties Of Ni-Cr Coatings Via Max Phase Reinforcement And Metallic Interlayers, Mohammad Ashikul Alam
Enhanced Nanomechanical, Tribological And Electrical Properties Of Ni-Cr Coatings Via Max Phase Reinforcement And Metallic Interlayers, Mohammad Ashikul Alam
Theses and Dissertations
Nickel-Chromium (Ni-Cr) coatings are widely used in industrial applications due to their resistance to oxidation, thermal stability, and adjustable electrical and mechanical properties. However, achieving improved multifunctional performance across various use cases ranging from extreme tribological environments to microscale device integration remains a significant challenge. This thesis explores two complementary strategies for enhancing the performance of Ni-Cr coatings in both thick and thin film configurations, aiming to address limitations in wear resistance, durability, adhesion, and electrical conductivity. For thick coatings, Ni-Cr was reinforced with Ti3SiC2 MAX phase particles and processed using selective laser sintering (SLS) with optimized parameters. The addition …
Understanding Administrator Approaches To Trauma-Informed Care: Findings From A Mixed Methods Study, Megan Coalwell
Understanding Administrator Approaches To Trauma-Informed Care: Findings From A Mixed Methods Study, Megan Coalwell
Theses and Dissertations
Traumatic events during childhood have been termed adverse childhood experiences (ACEs). Experiencing traumatic events or ACEs is common for school-aged children. Research reports indicate that as many as two out of three children will experience at least one traumatic event by the time they are eighteen. The negative effects of experiencing trauma are well documented. Trauma can lead to long-term outcomes in adults such as chronic health problems, mental health problems, substance misuse, and even early death. During childhood, it can lead to internalizing and externalizing problems, as well as difficulties in school. Trauma-Informed Care (TIC) is an approach to …
Flowdb: A Complete Method For Extracting Queries From Functional Programs, Koby J. Lewis
Flowdb: A Complete Method For Extracting Queries From Functional Programs, Koby J. Lewis
Theses and Dissertations
Programmers working on database-backed applications frequently face trade-offs between designing maintainable software and efficient software due to the overhead of querying a database. We demonstrate FlowDB, an analysis for database-backed programs that can aid in program transformations that allow a program to be written in a maintainable style while still being performant. FlowDB employs demand-driven control flow analysis (DCFA) to produce a set of query sites that may be evaluated during the execution of a program. This set of query sites may then be used by a developer or compiler to cache needed results.
An Active Quasi-Circulator Ic And Technique For 1-255 Mhz Resonance-Based Spectroscopic Impedance Plethysmography, Sharisse Poff
An Active Quasi-Circulator Ic And Technique For 1-255 Mhz Resonance-Based Spectroscopic Impedance Plethysmography, Sharisse Poff
Theses and Dissertations
Impedance measurement is a promising avenue for noninvasive glucosemonitoring. Specifically,resonance-basedimpedancemeasurements exhibit good correlation with glucose levels at excitations from tens of MHztoover 100 MHz. Additionally, plethysmographic impedance measurements are needed to separate arterial blood signals, which contain strongerglucose information, frominterstitialfluidsignals. Weanticipate that plethysmographic measurements across a range of frequencies— spectroscopic plethysmography—at excitations from tens to over 100 MHz could enable resonance-based monitoring with higher selectivity for arterial glucose than previous work. Afour-point impedance measurement circuit is designed, and its ability to measure constant and periodically time-varying impedance is demonstrated. This circuit presents high impedance to the device-undertest (DUT), which fails …
The Automation Of Aesthetics: Artificial Intelligence And Commercial Artists In North Brooklyn, Devin Sudweeks
The Automation Of Aesthetics: Artificial Intelligence And Commercial Artists In North Brooklyn, Devin Sudweeks
Theses and Dissertations
Corporate elites expect generative AI to replace commercial artists but overlook their social and aesthetic expertise. This ethnographic study explores how Brooklyn-based commercial artists narrate their value amid automation, emphasizing embodied presence in cultural scenes, visual language, style, and authenticity, skills not easily mechanized but vital to aesthetic economies.
Learning From Adolescents’ Lived Experience: Recommendations For Suicide Prevention For Youth And Their Caregivers, Genesis Minaya
Learning From Adolescents’ Lived Experience: Recommendations For Suicide Prevention For Youth And Their Caregivers, Genesis Minaya
Theses and Dissertations
This study explored adolescents’ views on which supports are most helpful during suicidal thoughts or behaviors. Interviews revealed six themes: Communication & Disclosure, Empathic Non-Judgmental Support, Consistent Presence, Parent/Family Education, Coping Tools, Hope and Future Orientation. These findings highlight the critical role of family dynamics in adolescent suicide prevention.
In The Name Of The Mother, The Nation, And The Race: White Women, The Jim Crow South, & Moralized White Supremacist Feminism, Shayna M. Lawson
In The Name Of The Mother, The Nation, And The Race: White Women, The Jim Crow South, & Moralized White Supremacist Feminism, Shayna M. Lawson
Theses and Dissertations
This thesis introduces the concept of moralized white supremacist feminism to examine the central role white women played in constructing, legitimizing, and sustaining racial hierarchies in the Jim Crow South through a network of cultural and political organizing, particularly through the United Daughters of the Confederacy and Women’s Ku Klux Klan. Far from passive observers, white women were strategic agents of segregation, leveraging ideals of purity, motherhood, and moral virtue to enforce anti-Black violence and oppression through educational, civic, legal, and symbolic institutions, as well as extra-legal practices. Drawing from archival materials, oral histories, and critical race theory, this study …
Reverse-Chinoiserie: Qing Imperial Porcelain And The Reappropriation Of European Rococo, Yifan (Mia) Ye
Reverse-Chinoiserie: Qing Imperial Porcelain And The Reappropriation Of European Rococo, Yifan (Mia) Ye
Theses and Dissertations
This thesis introduces “reverse-chinoiserie” to describe the Qing court’s reappropriation of European Rococo aesthetics in imperial porcelain. Through case studies of 18th-century ceramic diplomacy and design, it reveals how cultural imitation was reengineered into visual sovereignty. It examines how China responded to, absorbed, and redirected European fantasies of empire.
Intergenerational Transmission Of Health: Evidence From Indonesia, Fatima Khan
Intergenerational Transmission Of Health: Evidence From Indonesia, Fatima Khan
Theses and Dissertations
This study estimates the causal transmission of health from mothers to their children. Intergenerational associations in health and other human capital outcomes are well established, but those associations may not be causal due to common unobserved factors between a mother and her child. This study employs two-stage least squares, using weather variation as an instrument, to causally identify the relationship between maternal health and child health outcomes in five dimensions: height-for-age, self-reported health, blood pressure, lung capacity, and hemoglobin levels. The data are from the Indonesian Family Life Survey (1993--2014), a longitudinal survey that provides a 21-year look into the …
Acute Exposure Of American Oyster (Crassostrea Virginica) To Selected Antidepressant Drug: Histological, Biochemical, And Immunohistochemical Assessments, Md. Faisal Amin
Acute Exposure Of American Oyster (Crassostrea Virginica) To Selected Antidepressant Drug: Histological, Biochemical, And Immunohistochemical Assessments, Md. Faisal Amin
Theses and Dissertations
The rapid increase in pharmaceutical use has brought significant health benefits to humans. Studies have shown that many pharmaceuticals, such as antidepressants, are often detected in surface waters, groundwater, and even drinking water. These pharmaceuticals in aquatic environments threaten marine life seriously. Marine bivalves are vital source of seafood for people worldwide. In this study, we examined the effects of short-term exposure to fluoxetine, an antidepressant used to treat depression, at low (0.5 μg/L) and high (5 μg/L) doses over a one-week period on American oysters (Crassostrea virginica) under controlled laboratory conditions. Histological analysis revealed atrophy in the gills and …
Reflections Of Linguistic Experiences In A Borderland: Influences On Cultural Identity And Teacher Praxis, Iliana Cantu
Reflections Of Linguistic Experiences In A Borderland: Influences On Cultural Identity And Teacher Praxis, Iliana Cantu
Theses and Dissertations
This Autoethnographic dissertation uses autohistoria-teoria to critically analyze my lived curriculum as a Mexican-born raised in the borderland of the Rio Grande Valley. This research aims to understand the influence of my linguistic experiences on my cultural identity and teaching praxis within the same context. Drawing from Anzaldua’s (1987) concept of Borderlands as a contextual lens and Raciolinguistics as a theoretical framework, I examine and reflect on key linguistic experiences that have perpetuated colonizing linguistic practices rather than fostered linguistic diversity. Additionally, Culturally Linguistic Sustaining Pedagogy serves as a framework to critically analyze my teaching praxis in relation to my …
Barriers To Hispanic Post-Secondary Education In Science Fields, Luis Slayton
Barriers To Hispanic Post-Secondary Education In Science Fields, Luis Slayton
Theses and Dissertations
The study aimed to examine whether external barriers could be identified and are present throughout a Hispanic individual's educational life. The beliefs of the Hispanic community regarding education and the nature of acquiring an education could be relevant to the factors that impede the completion of high school. A survey approach was chosen as the methodology for the study due to the confidential nature of a questionnaire. Human nature tends to be more honest when not asked personal questions face-to-face. Additionally, there is potential to generalize attributes from a small sample to a larger population, allowing inferences about the identified …