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Full-Text Articles in Entire DC Network
Development Of Numerical Tools And Performance Metrics For Analysis Of Optical Particle Counters, Doug Webb
Development Of Numerical Tools And Performance Metrics For Analysis Of Optical Particle Counters, Doug Webb
Theses and Dissertations
Monitoring air quality is essential for understanding and mitigating the health impacts of airborne particulate matter (PM), which is linked to respiratory and cardiovascular disease. Optical particle counters (OPCs) are widely used for air quality monitoring, yet their precision and accuracy remain uncertain due to inconsistent performance evaluations. In this thesis, performance metrics are developed that can be used to assess the accuracy of OPCs in measuring PM concentrations and size distributions. Computational fluid dynamics (CFD) simulations are employed to analyze the behavior of particle-laden air streams through representative OPC models. The impact of design parameters is quantified using newly …
Tracing Tremor: From Upper-Limb Neuromusculoskeletal Dynamics To Movement Signatures In Essential Tremor, Landon J. Beutler
Tracing Tremor: From Upper-Limb Neuromusculoskeletal Dynamics To Movement Signatures In Essential Tremor, Landon J. Beutler
Theses and Dissertations
Tremor is a common neurological condition that significantly impairs the quality of life for millions. Despite this prevalence, the underlying mechanisms of its propagation remain poorly understood, and current treatment options often rely on trial-and-error methods. Moreover, the most common type, Essential Tremor (ET), presents a unique challenge due to its heterogeneity--patients exhibit a wide range of symptoms, severities, and responses to treatment. This thesis primarily advances tremor understanding through computational modeling, with a secondary focus on data-driven subtyping of ET via cluster analysis. These parallel paths aim to improve both mechanistic insight and clinical classification. Tremor propagation refers to …
Development Of Low-Cost Small-Batch Flibe Filtration, And A Comparison Of Uranium Tetrafluoride And Ionic Oxygen Oxidation In Flibe, Jacob D. Christensen
Development Of Low-Cost Small-Batch Flibe Filtration, And A Comparison Of Uranium Tetrafluoride And Ionic Oxygen Oxidation In Flibe, Jacob D. Christensen
Theses and Dissertations
Low-cost benchtop-scale molten fluoride salt cleaning was investigated in FLiBe (LiF-BeF2), focusing on electrochemical cleaning and filtration. FLiBe filtration was demonstrated using both pressurized and open filtration systems. Copper and 400 Monel meshes were effective and reusable. Wetting appears to be the primary obstacle to FLiBe filtration. Oxygen oxidation behavior in FLiBe was examined using cyclic voltammetry (CV) and cyclic square wave voltammetry (CSWV) techniques. Standard addition height measurement was used to determine electrode surface area. Results support a single-step 2-electron process, matching observations in literature. Pt electrodes may be prone to oxidative side reactions, although more investigation is required. …
Streamlined Technology Systems: Optimizing Technology Systems For Meridian Public School District, Latoya Atterberry
Streamlined Technology Systems: Optimizing Technology Systems For Meridian Public School District, Latoya Atterberry
Theses and Dissertations
Technology has become a cornerstone of modern education, reshaping how teachers instruct and students learn. "Technology plays a pivotal role in shaping modern learning environments, offering opportunities for enhanced engagement and personalized learning experiences" (Ascione, 2023). This project focuses on the critical role of effective professional development in equipping teachers to integrate technology into their instructional practices meaningfully. Drawing on the TPACK (Technological Pedagogical Content Knowledge) and SAMR (Substitution, Augmentation, Modification, Redefinition) frameworks, this project examines how tailored professional development programs can bridge gaps in teachers’ technological and pedagogical knowledge, guiding them toward transformative technology use. This project culminates in …
Soil Ethics In Practice: Harvesting Conservation Choices Among Puerto Rican Coffee Farmers, Patricia Marie Cordero-Irizarry
Soil Ethics In Practice: Harvesting Conservation Choices Among Puerto Rican Coffee Farmers, Patricia Marie Cordero-Irizarry
Theses and Dissertations
Coffee farming in Puerto Rico has declined over recent decades, partly due to deteriorating soil quality. However, the decision-making process behind farmers’ adoption of soil conservation practices remains unclear, particularly the overlooked role of soil ethics, which emphasizes the moral principles guiding human relationships with the soil. This mixed-methods study examined coffee farmers’ adoption of soil conservation practices by integrating the Values-Beliefs-Norms (VBN) theory and a newly developed Soil Ethics Survey (SES) instrument for the quantitative component, while using Decision-Making Theory and Social Cognitive Theory to qualitatively explore how farmers’ experiences and reflections shape their soil ethics. Quantitative findings revealed …
Improving Engagement Through Readers' Theater: A Systematic Literature Review And Teacher Process Portfolio With Program Proposal, Karen K. Crum
Improving Engagement Through Readers' Theater: A Systematic Literature Review And Teacher Process Portfolio With Program Proposal, Karen K. Crum
Theses and Dissertations
This project investigated the impact of Readers’ Theater on elementary students’ attitudes toward reading, the teacher’s perception of effectiveness of Readers’ Theater as a tool to improve reading comprehension, and students’ test-related anxiety, within the context of the Mississippi Academic Assessment Program (MAAP) mandated by the Literacy-Based Promotion Act. While existing literature has highlighted Readers’ Theater as an effective instructional strategy that engages reluctant readers and enhances both reading fluency and comprehension through repeated, performance-based readings, gaps in current research exist regarding Readers’ Theater effectiveness as an instructional strategy to mitigate reading- and test-anxiety. Through research questions focused on how …
Regulating Artificial Intelligence In The U.S.: A Historical-Innovation-Inspired Framework, Di Kevin Gao
Regulating Artificial Intelligence In The U.S.: A Historical-Innovation-Inspired Framework, Di Kevin Gao
Theses and Dissertations
The emergence of OpenAI\textquotesingle s ChatGPT has marked the dawn of a new Artificial Intelligence (AI) era, unleashing a wave of user excitement, moral panic, and apocalyptic warnings. Yet, these concerns have done little to slow the breakneck pace of AI development and deployment. Should the United States adopt the European Union\textquotesingle s top-down, legislation-first approach, or follow the United Kingdom\textquotesingle s bottom-up, court-driven model? This research draws from historical legislative parallels in the U.S. By examining past regulatory frameworks for disruptive technologies, including electricity, automobiles, the telephone, broadband internet, nuclear technology, cryptocurrency, commodity futures, modern pharmaceuticals, and social media, …
Documenting Children’S Use, Physical Activity, And Social Play In Tom Lee Park’S Playscape, Laurel Kelton
Documenting Children’S Use, Physical Activity, And Social Play In Tom Lee Park’S Playscape, Laurel Kelton
Theses and Dissertations
The benefits of nature and physical activity on children’s health and development are well documented. However, many children lack access to nature and physical activity. Researchers have found that “innovative playgrounds” —which, by definition, are more likely to include natural elements that facilitate nature immersion— are associated with increased physical activity and duration of stay. This thesis is a case study of a public innovative playground at Tom Lee Park. It sought to understand the playground’s areas and physical characteristics that have higher levels of use, physical activity, and social play and longer durations of stay. Data was collected over …
My Grandparents Raised Me: The Role Of Formative Individual And Family Experiences In Predicting Emerging Adult Substance Use, Attachment, And Mental Health Outcomes, Acacia Lopez
Theses and Dissertations
Individuals raised in a grandfamily, or family structure in which a grandparent raises their grandchildren, experience higher rates of adverse childhood experiences (ACEs), insecure attachment, and negative mental health outcomes during childhood. Literature on outcomes of these individuals across the lifespan is extremely limited, however, and it is unclear how formative individual and family experiences of being raised by grandparents carry into emerging adulthood (e.g., 18 to 25-years-old). Emerging adulthood is a developmental stage marked by significant instability and unpredictability that is linked with increased vulnerability to mental health concerns and substance use. It has been identified as an important …
Family Matters: How Caregiver Influence And Internal Locus Of Control Relate To Academics, Maia Mclin
Family Matters: How Caregiver Influence And Internal Locus Of Control Relate To Academics, Maia Mclin
Theses and Dissertations
Academics in college predicts life outcomes; students from lower socioeconomic status (SES) backgrounds often face greater challenges. One such population, consisting of many individuals from marginalized backgrounds, are those raised by nontraditional parents. This study investigated predictors of academics among 357 college students, examining authoritative parenting style, intrinsic motivation, academic locus of control (LoC), SES, and caregiver type (parental vs. non-traditional). Academics was assessed using two composite scores: 'academic knowledge' (GPA/ACT) and 'compensatory attention' (working memory via n-back task accuracy and attention/concentration via SMALSI-C). Hierarchical regressions revealed that higher authoritative parenting, higher SES, and being raised by biological parents significantly …
Expanding Access: A College Access Model For English Learners, Amanda Blackwell Mcleod
Expanding Access: A College Access Model For English Learners, Amanda Blackwell Mcleod
Theses and Dissertations
As one of the fastest-growing student populations in K -12 schools, English Learners (EL)s remain significantly underrepresented in postsecondary education. Barriers such as academic preparedness, financial constraints, and sociocultural factors hinder their access to postsecondary education. However, by developing targeted strategies to assist ELs in accessing and completing college, institutions can address these challenges and ensure a more diverse and sustainable student body in the face of declining enrollment. Effective models for helping EL students access college include family engagement, early college exposure, peer mentorship, and student-centered advising. By assisting ELs in accessing college, institutions can strengthen their enrollment efforts, …
In Good Times & Bad: Measuring Ambivalence In Custodial Grandparents, Marin Gail Olson
In Good Times & Bad: Measuring Ambivalence In Custodial Grandparents, Marin Gail Olson
Theses and Dissertations
Like other forms of caregivers, custodial grandparents experience both the joys and trials of raising their grandchildren. This culmination of positive and negative feelings is called “caregiver ambivalence." It has only recently been studied in relation to caregiver burden and wellness in the form of caregiver ambivalence theory (CAT). By collecting data from approximately 395 custodial grandparents via an online survey, the current study aimed to test if custodial grandparents’ feelings of burden influence their perceived well-being and if feelings of ambivalence mediate this relation. Implications of this research include identifying areas of strength and growth within custodial grandparents and …
Mastering Skills Together: Effects Of Video Modeling On Parent-Implemented Academic Intervention, Chelsea S. Thorpe
Mastering Skills Together: Effects Of Video Modeling On Parent-Implemented Academic Intervention, Chelsea S. Thorpe
Theses and Dissertations
Reading proficiency is a fundamental skill for academic success and long-term developmental outcomes. Yet, despite ongoing efforts to strengthen literacy education, a significant number of students continue to face reading difficulties that hinder comprehension, critical thinking, and overall academic achievement. National data demonstrate the urgency of this issue. The 2024 National Assessment of Educational Progress (NAEP) reported that 40% of fourth-grade students and 33% of eighth-grade students scored below the Basic level in reading, marking the highest rate on record for eighth graders. Early reading challenges can often lead to other academic and psychosocial challenges such as low achievement, low …
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 …
When Quitting Isn't An Option: Learner Perceptions Of Persistence Factors In A Faith-Based Online Global English As An International Language Course, Heather Porter Ugege
When Quitting Isn't An Option: Learner Perceptions Of Persistence Factors In A Faith-Based Online Global English As An International Language Course, Heather Porter Ugege
Theses and Dissertations
This paper explores the perceptions of learners in an online, global, faith-based, English as an international language (EIL) course. The course is designed to help students with limited access to educational opportunities develop English skills and prepare for enrollment in an online university. Since its launch, course enrollment, retention, engagement, and completion metrics have shown significant gains year over year. However, the number of learners in the course who have met all course completion criteria is still limited. This inquiry aims to gain a deeper understanding of the factors influencing learner persistence from the perspectives of both course completers and …
Perceptions Of Trauma-Informed Care Training For Teachers In Early Childhood Education Settings, Molly Michelle Michaels
Perceptions Of Trauma-Informed Care Training For Teachers In Early Childhood Education Settings, Molly Michelle Michaels
Theses and Dissertations
The maltreatment of children is currently a global health priority (Chamberlain et al., 2019). By the age of 16, over two-thirds of children report having experienced at least one traumatic event (Toof et al., 2020). Exposure to childhood trauma can negatively impact brain development, leading to problems functioning across community, home, and school settings (Burke Harris, 2018). In response, the Substance Abuse and Mental Health Services Administration developed a framework for trauma-informed care to address the significant impact of trauma on individuals (Loomis, 2018). However, few studies exist that explore the use of trauma-informed care practices in early childhood education …
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 …
Extracting Magnetic Exchange Interactions From Magnetic Pair Distribution Function Data Via Monte Carlo Simulations, Emma Zappala
Extracting Magnetic Exchange Interactions From Magnetic Pair Distribution Function Data Via Monte Carlo Simulations, Emma Zappala
Theses and Dissertations
The magnetic pair distribution function (mPDF) is a powerful tool used to analyze diffuse magnetic scattering data in real-space. Presently, mPDF is usually used to model real-space spin configurations of materials, offering important insights into the local magnetic structure, but not to directly probe the magnetic interactions giving rise to the magnetic structure in the first place. Using Monte Carlo simulations, a robust algorithm to simulate the magnetic structure of materials, we can connect the underlying magnetic exchange parameters to the spin configurations from experimental mPDF data. We prove this concept using a simple two-dimensional Ising model and then demonstrate …
Transcendental Formulas For The Coefficients Of Ramanujan's Mock Theta Functions, Gradin Anderson
Transcendental Formulas For The Coefficients Of Ramanujan's Mock Theta Functions, Gradin Anderson
Theses and Dissertations
Ramanujan's 1920 last letter to Hardy contains seventeen examples of mock theta functions, including the famous third order function f(q), which resemble modular forms of weight 1/2. This list has since been expanded by individuals such as Gordon and McIntosh and the McKay--Thompson series arising in moonshine theory. In 1964, Andrews---improving on a result of Dragonette---gave an asymptotic formula for the coefficients of f(q) and conjectured an exact formula: a conditionally convergent series that closely resembles the Hardy--Ramanujan--Rademacher formula for the partition function. A key breakthrough came in 2001, when Zwegers wrote f(q) as the holomorphic component of a vector-valued …
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 …
Predicting The Yield Strength Of Aluminum Alloys Based On Composition, Clinton K. Waite
Predicting The Yield Strength Of Aluminum Alloys Based On Composition, Clinton K. Waite
Theses and Dissertations
This work describes a model to predict the yield strength of aluminum alloys, in either an annealed or T6 (peak aged) state, based solely on its composition. This is accomplished through the analyses of strengthening mechanisms common to aluminum, of which a novel semi-empirical model to predict precipitation strengthening is discussed. Solid solution strengthening and grain boundary strengthening are more simplistically considered but with significant accuracy. It is shown that by combining the strength contributions of each strengthening mechanism, the overall yield strength can be predicted by its composition in any of the 1xxx-7xxx series alloys. This allows the model …
Classification And Analysis Of Families Of Graphs With Focus On Nordhaus-Gaddum Bounds, Sibi Pranav Muthuprakash
Classification And Analysis Of Families Of Graphs With Focus On Nordhaus-Gaddum Bounds, Sibi Pranav Muthuprakash
Theses and Dissertations
Nordhaus-Gaddum type problems focus on bounding characteristics of graph and its complement. There are certain families of graphs which yield optimal upper bounds on various Nordhaus-Gaddum characteristics of graph. In this paper, we will talk about bounding combinatorial algebraic connectivity, normalized algebraic connectivity, the Cheeger constant, and the isoperimetric number of a graph and its complement. We will identify some optimal or near optimal families of graphs and conduct an analysis on these families that will help to bound these characteristics. We will also prove and conjecture some bounds that can help in formulating stronger bounds on these characteristics of …
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 …