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Full-Text Articles in Entire DC Network
Transcription Fidelity In The Face Of Oxidative Damage, Eastilan Gyiwah Appiah
Transcription Fidelity In The Face Of Oxidative Damage, Eastilan Gyiwah Appiah
Theses and Dissertations
It is very important that the process of transcription is correctly carried out in the cell for the faithful expression of the genetic code. However, should mistakes happen, they can result in transcription errors which interfere with the protein-making machinery of the cell. This will result in accumulation of proteins and dysfunctional proteins that have the potential of causing diseases like Alzheimer’s. Oxidative damage caused by hydrogen peroxide is known to cause transcription errors in organisms like yeast. It is therefore important to investigate the extent to which hydrogen peroxide can damage cells.
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 …
Determining The Toxic Threshold And Other Use Characteristics For Industrial Hemp Seed Oil Used For Wood Product Protection, Daylan M. Barnes
Determining The Toxic Threshold And Other Use Characteristics For Industrial Hemp Seed Oil Used For Wood Product Protection, Daylan M. Barnes
Theses and Dissertations
Plant-based wood treatments have been utilized for many years, with varying success. Oils such as those extracted from linseed (flax), tung, and hemp plants have been used for thousands of years as finishes on wood. These are all drying oils, which dry to a film when exposed to air. Hemp seed oil has a high fatty acid content and can take a long time to dry on wood products but is valued in woodworking for being easy to use, food-safe, and having little to no odor. In this study, cold-pressed hemp seed oil, blended with a soybean carrier oil, is …
Calibration And Validation Of The Thermal Finite Element Model For Er120s-G Wire Arc Directed Energy Deposition Using Infrared Cameras And Thermocouples, Joshua Mykl Bassett
Calibration And Validation Of The Thermal Finite Element Model For Er120s-G Wire Arc Directed Energy Deposition Using Infrared Cameras And Thermocouples, Joshua Mykl Bassett
Theses and Dissertations
Wire Arc Directed Energy Deposition (WA-DED) is a promising additive manufacturing method for producing large metallic components with high deposition rates and low costs. However, its rapid heat input can lead to residual stress, microstructural changes, and dimensional inaccuracies. Accurate thermal modeling is essential to mitigate these effects. This study presents a thermal calibration of a finite element model (FEM) for ER120S-G using thermocouples and infrared (IR) imaging. Thermal data were gathered from three experiments to complete the calibration of the FEM . Calibration focused on tuning the Goldak heat source parameters, power efficiency, and heat transfer coefficients to minimize …
Tools We Use: Evaluating Uav And Photogrammetry Workflows For Early-Stage Site Documentation; Comparative Analysis For Small Landscape Architecture Firms, Bryant Baugus
Theses and Dissertations
Landscape architects utilize advanced technologies in the design process. Advancements in automation and data capture have opened up new opportunities for UAVs and photogrammetry to produce high-resolution imagery, contours, and 3D models. By leveraging UAVs early in the design process, landscape architects are able to maximize advantages: site analysis through computational software, 3D sectional information, and hydrology prediction. This research focuses specifically on the advantages UAVs offer compared to established workflow methods. It examines four unique workflows for early-stage site documentation: capturing the site with UAVs through photogrammetry, generating a site plan from publicly available GIS data, gathering information from …
Autonomous Generation Of Ids Rules From Threat Intelligence, Azim Bazarov
Autonomous Generation Of Ids Rules From Threat Intelligence, Azim Bazarov
Theses and Dissertations
Signature-based Intrusion Detection Systems (IDS) detect malicious activities by matching network or host activity against predefined rules. These rules are derived from Cyber Threat Intelligence (CTI), which includes attack signatures and behavioral patterns obtained through automated tools and manual threat analysis, such as sandboxing. The CTI is then transformed into actionable rules for the IDS engine, enabling real-time detection and prevention of threats. The constant evolution of cyber threats necessitates frequent rule updates, which delay deployment time and weaken overall security readiness. Recent advancements in autonomous agentic systems powered by Large Language Models (LLMs) offer the potential for automatic IDS …
Development And Application Of A Single Nucleotide Polymorphism Panel For Individual Identification And Population Genetic Assessment Of Swamp Rabbits, Chloe S. Beall
Theses and Dissertations
Swamp rabbits (Sylvilagus aquaticus) are a potentially useful indicator species for bottomland hardwood forest ecosystem health and can be monitored using fecal pellet surveys. Advances in genetic sequencing technology have allowed researchers to obtain genetic information about wildlife using non-invasive sampling. Genotyping-in-thousands by sequencing (GT-seq) allows researchers to target specific genetic markers selected to meet their objectives, such as differentiating individuals. We investigated the utility of GT-seq for genotyping DNA derived from swamp rabbit fecal pellets. We designed a GT-seq panel for swamp rabbits, then tested the panel on fecal samples collected in the Mississippi Delta. We developed a real …
Variables That Affect Designers’ Use Of Edible Planting In Residential Landscape Design, Emily Margaret Butler
Variables That Affect Designers’ Use Of Edible Planting In Residential Landscape Design, Emily Margaret Butler
Theses and Dissertations
Edible landscaping or “foodscaping” has had a resurgence into the mainstream. Though many trailblazers aim to encourage edible landscaping through homeowners and renters, there seems to be a lack of initiative from designers. To identify the variables that can affect a designer’s use of edible planting in the residential Southeastern United States, research and statistical methods were employed. Beyond interviewing an expert in the field of edible planting in the residential space, a survey consisting of both Likert and open-ended questions was sent to licensed landscape architects in the Southeastern U.S. The survey was conducted using Qualtrics and analyzed using …
American Officer Administration Development And Its Effects On Conduct, 1900-1970, David R. Burford
American Officer Administration Development And Its Effects On Conduct, 1900-1970, David R. Burford
Theses and Dissertations
The 1970 U.S. Army War College Study on Military Professionalism concluded that officers were so obsessed with demonstrating loyalty, deference to authority, and promotion that they seemed to sacrifice their personal integrity. The findings shocked high-ranked Army officials. The detailed legislative history of Army officer administration from roughly 1900 to 1970 presented in this dissertation shows why and how these conditions came to exist. In nine chapters, the material revealed in magazines, periodicals, student research papers, statements at congressional debates, hearings and investigations, and various official and unofficial publications narrate the development of the post-World War II American officer governance …
Winter Waterfowl Forage Production In Managed Coastal Wetlands Of The South Atlantic Region: Improving Inputs For Bioenergetics Modeling Used In Regional Conservation Planning, Stephen Andrew Clements
Winter Waterfowl Forage Production In Managed Coastal Wetlands Of The South Atlantic Region: Improving Inputs For Bioenergetics Modeling Used In Regional Conservation Planning, Stephen Andrew Clements
Theses and Dissertations
Under the assumption that food is limiting to non-breeding waterfowl, Migratory Bird Joint Ventures frequently use daily-ration bioenergetics models to inform wetland conservation objectives. Two essential components of these models include estimates of energy supply (i.e., energetic density) of wetlands used by waterfowl and accurate spatial data layers to determine wetland area. Managed impoundments are important wetland resources for migrating and wintering waterfowl in the South Atlantic Region. However, there is little understanding of the energetic density available to waterfowl in these wetlands regionally, and until recently, a database of digitized impoundments was unavailable for developing a spatial data layer. …
Edna Surveillance And Population Genomics Of The Invasive Loaches Introduced To The United States, Tobin J. Davidson
Edna Surveillance And Population Genomics Of The Invasive Loaches Introduced To The United States, Tobin J. Davidson
Theses and Dissertations
Invasive species represent a growing threat to the ecosystems and economies of the United States. The southeastern United States is an aquatic biodiversity hotspot, and the decline of multiple native species already facing extinction is attributed to a rapidly growing number of nonindigenous freshwater fishes. Next-generation sequencing was used to analyze the population genomics of several populations of Pond Loach (Misgurnus anguillicaudatus) introduced to the United States. Three evolutionarily significant units of Misgurnus loaches were found, suggesting the invasion of multiple different species in the United States. Additionally, noninvasive environmental DNA (eDNA) protocol designed for early detection of invasive freshwater …
Ex Vivo Evaluation Of Polyethylene Cable Compared To Stainless Steel Cerclage Wire In A Canine Fracture Model, Seila Natasha Day
Ex Vivo Evaluation Of Polyethylene Cable Compared To Stainless Steel Cerclage Wire In A Canine Fracture Model, Seila Natasha Day
Theses and Dissertations
A long oblique osteotomy model was created using paired canine cadaveric femurs. The osteotomies were stabilized with either three ultra-high molecular weight polyethylene (UHMWPE) cables (n=10) or three 18 gauge stainless steel loop cerclage wires (n=10). Cyclic testing was performed in four-point bending by applying increasing force at 2 Hz until construct failure, defined as ≥2mm of actuator displacement. Data analyzed included cycles to failure, load at failure, and dynamic stiffness. There was no statistically significant difference in any of the outcomes tested between constructs. Visible loosening was noted in all loop cerclage constructs. No visible loosening of the UHMWPE …
Measuring Emotional Biases In Attention And Memory In Individuals Who Fear Happiness, Michael R. Gallagher
Measuring Emotional Biases In Attention And Memory In Individuals Who Fear Happiness, Michael R. Gallagher
Theses and Dissertations
A central goal in contemporary clinical science is to measure emotionally driven factors of psychopathology through cognitive experimental methods. However, limitations in previous experimental paradigms have led to a lack of sensitivity and reliability in measuring the biased processing of positive and negative information. Additionally, these biases have not been investigated in individuals who fear happiness. Therefore, this study examined the unique relations between attention and memory biases of emotional stimuli and fear of happiness scores. A more sensitive experimental paradigm tracked eye positions while participants viewed faces over time to measure tendencies to attend to emotional content. A memory …
Towards Applying Artificial Intelligence To Solve Np-Complete Problems Using Quantum Computing, Andrew Robert Haverly
Towards Applying Artificial Intelligence To Solve Np-Complete Problems Using Quantum Computing, Andrew Robert Haverly
Theses and Dissertations
This dissertation explores the methodology for more thoroughly entangling artificial intelligence and quantum computing. This is explored through a background search of problems solved using Grover’s quantum algorithm, a new quantum protein folding and drug discovery algorithm, using Grover’s algorithm to train quantum artificial neural networks, using quantum artificial neural networks for reinforcement learning, mapping classical assembly instructions to quantum circuits to make quantum programming easier, and using prompt engineering to get a classical artificial intelligence agent to solve an NP-Complete problem using a Grover’s algorithm. This method not only simplifies the creation of algorithms but also opens new avenues …
Strategic Use Of Exogenous Feed Enzymes And Sodium Bisulfate To Optimize Broiler Production, Spencer Thomas Karn
Strategic Use Of Exogenous Feed Enzymes And Sodium Bisulfate To Optimize Broiler Production, Spencer Thomas Karn
Theses and Dissertations
Poultry producers must continually evaluate nutritional strategies to enhance broiler performance and sustainability. Chapter II assessed sodium bisulfate (SB) applied to litter, feed, and water across a 42-day grow-out. Applying SB to litter reduced pH, while 0.3% and 0.4% dietary SB improved feed conversion ratio (FCR). Water acidification with SB during the final week did not impair performance, supporting its use as a preharvest intervention. Chapter III evaluated phytase at 500, 1500, and 2000 FTU/kg, with or without protease, in reduced amino acid diets over 56 days. Birds fed a nutrient-adequate diet with 1500 FTU/kg phytase outperformed all reduced-amino acid …
From Gametes To Genes: Genetic Quality Assessment Of Anuran Cryopreserved Spermatozoa And Derived Embryos, Trinity Isabella Kassuhn
From Gametes To Genes: Genetic Quality Assessment Of Anuran Cryopreserved Spermatozoa And Derived Embryos, Trinity Isabella Kassuhn
Theses and Dissertations
Sperm cryopreservation is an important tool within the suite of assisted reproductive technologies (ART) as it enables long-term storage of genetically valuable gametes. However, knowledge of the diagnostic criteria for assessing sperm quality and the genetic consequences of using cryopreserved sperm in amphibians is limited. This gap has raised concerns in captive breeding and reintroduction programs regarding the potential impact that cryopreserved sperm and the derived embryos may have on a population. The thesis aims to investigate how sperm cryopreservation affects the genetic material in both sperm and resulting embryos, with implications for in situ and ex situ amphibian populations. …
Spray Characterization And Fuel Property Analysis Of Tier 3 Gasoline In A Gdi System Using Machine Learning, Kyungwon Lee
Spray Characterization And Fuel Property Analysis Of Tier 3 Gasoline In A Gdi System Using Machine Learning, Kyungwon Lee
Theses and Dissertations
This study investigates the spray behavior of Tier 3 gasoline in gasoline direct injection engines using experimental methods. Tier 3 gasoline, formulated with lower sulfur content, enhances aftertreatment system efficiency and supports cleaner combustion. A comparative fuel property analysis between Tier 3 gasoline and PACE-20, surrogate fuel, was conducted to understand compositional effects on spray. A constant volume spray chamber and optical diagnostics, including diffuse back-illumination extinction, Schlieren, microscopic, and 3D CT reconstruction imaging, were used to examine spray morphology under varying injection conditions. Key spray parameters such as liquid volume fraction, projected liquid volume, droplet size, and cone angle …
Finite Element Modeling Of Plasma Membrane Injury From Mechanical Stress: A Combined Finite Element And Machine Learning Approach, Eric Flynn Mabowitz
Finite Element Modeling Of Plasma Membrane Injury From Mechanical Stress: A Combined Finite Element And Machine Learning Approach, Eric Flynn Mabowitz
Theses and Dissertations
Low back pain is a leading cause of disability across a wide range of occupations and environments. Exposure to whole-body vibration (WBV) has been linked to an increased prevalence of low back pain, as well as certain neurophysiological complications. While current understanding of WBV effects is largely based on tissue- and whole-body-level studies, a significant gap remains in knowledge regarding how vibrational forces propagate through individual cells. This knowledge gap limits a comprehensive understanding of how these forces affect the human body at the microscopic level. To address this, the present study employs both two-dimensional (2D) and three-dimensional (3D) finite …
Exploring The Use Of A Random Forest In Correcting Gfs Tropical Cyclone Landfall Errors, Victoria Grace Maxwell
Exploring The Use Of A Random Forest In Correcting Gfs Tropical Cyclone Landfall Errors, Victoria Grace Maxwell
Theses and Dissertations
While Tropical Cyclone (TC) track forecasting has improved over the years it has been slow. These improvements can be attributed to increased computer capability and better model inputs. Machine learning has been used for forecasting different TC track and intensity. The study here looks to use a Random Forest to predict the TC latitude/longitude “landfall” at 72-hr and quantify improvements to the GFS forecast. Principal Component Analysis was used to reduce the dimensionality of the meteorological variables. Stepwise regression was used to determine the principal components that were important for forecasting landfall. These variables were then tested with a multivariate …
Transforming Movement Assessment In Physical Therapy Through Subaquatic Data Collection, Kaitlyn Mcdonald
Transforming Movement Assessment In Physical Therapy Through Subaquatic Data Collection, Kaitlyn Mcdonald
Theses and Dissertations
This study explored the interest and perceived barriers to integrating subaquatic diagnostic technologies (SDTs) into hydrotherapy among licensed physical therapists. Seventeen semi-structured interviews were conducted using a mixed-methods design, with 15 interviews included in the final analysis. Quantitative data were analyzed using chi-square tests, while qualitative responses were coded thematically. Results indicated no statistically significant relationships between SDT interest and career stage or hydrotherapy access, though qualitative data highlighted concerns about cost, limited access, and usability. Despite mixed interest in adoption, participants identified several potential benefits of SDTs, including improved treatment tailoring, increased patient buy-in, and enhanced outcome monitoring. Functional …
Unboxing The Black Box: Graph-Based Interpretability In Transformer Models, Ramak Nassiri
Unboxing The Black Box: Graph-Based Interpretability In Transformer Models, Ramak Nassiri
Theses and Dissertations
This thesis introduces a novel interpretability framework for transformer encoder models by hypothesizing that their internal embedding updates define a state transition system. We propose that transformers implicitly learn token-to-token influence dynamics, which can be analyzed using graph-theoretic methods. To validate this, we construct transition graphs from embedding changes and rank token importance using the PageRank algorithm. We develop two transformer models from scratch: a self-supervised model that incorporates serotype tokens to learn contextualized embeddings, and a supervised model initialized with these embeddings. Cosine similarity analysis of their token influence patterns reveals strong structural alignment, with values exceeding 93%. This …
Augmenting Healthcare Communication: Context-Aware Ai Frameworks For Clinical Decision Support And Automated Summarization, Subash Neupane
Augmenting Healthcare Communication: Context-Aware Ai Frameworks For Clinical Decision Support And Automated Summarization, Subash Neupane
Theses and Dissertations
Healthcare communication is plagued by fragmented medical knowledge, patient misunderstanding of care plans, and clinician burnout from documentation burdens. These inefficiencies cost the U.S. healthcare system over $300 billion annually due to preventable nonadherence and administrative waste [47, 19]. While Artificial Intelligence (AI) technology like Large Language Models (LLMs) offer potential solutions, existing systems fail to deliver personalized, context-aware guidance or automate documentation without sacrificing accuracy. This dissertation addresses these gaps through three novel context-aware AI frameworks such as MedInsight, ClinicSum, and ClinicDuo. MedInsight leverages a multi-source context augmentation approach to synthesize patient centric medical responses by integrating Electronic Health …
Spawning And Rearing Techniques For Improved Production Of White Crappie (Pomoxis Anularis), Matthew E. Nichols
Spawning And Rearing Techniques For Improved Production Of White Crappie (Pomoxis Anularis), Matthew E. Nichols
Theses and Dissertations
White Crappie (Pomoxis annularis) is a popular species, commonly propagated in hatcheries to support fisheries and supplement natural populations during cyclical declines. However, limited information exists regarding the effects of extended broodstock holding periods (>4 weeks), which are critical for enhancing flexibility in hatchery practices. Furthermore, rearing larval-to-juvenile crappie in outdoor ponds would greatly benefit from optimized fertilization and stocking densities to improve growth and survival rates. Additionally, dietary preferences during early life stages remain poorly understood, yet are essential for maximizing production efficiency. This study found holding broodstock for > 6 weeks can significantly reduce fertilization percentages. We also …
Decision-Making And Execution Skill Estimation In Continuous Action Space Domains, Delma I. Nieves-Rivera
Decision-Making And Execution Skill Estimation In Continuous Action Space Domains, Delma I. Nieves-Rivera
Theses and Dissertations
In many real-world domains with continuous action spaces, an agent’s performance is driven by two key factors: its decision-making skill, or ability to select high-quality actions, and its execution skill, or precision in carrying out these actions. However, accurately evaluating these skills, particularly when direct information about the agent’s intentions is unavailable, remains a challenging problem. This research addresses this need by developing a theoretical framework and proposing novel estimation methods to assess both decision-making and execution skills based solely on observable data: executed actions and their associated rewards. The work consists of six core studies focused on developing and …
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 …
Motivating Factors Leading To Job Satisfaction Of Teacher Assistants And Their Perceptions Of Such, Jon Oswalt
Motivating Factors Leading To Job Satisfaction Of Teacher Assistants And Their Perceptions Of Such, Jon Oswalt
Theses and Dissertations
This research study investigated the role perceptions, motivating factors, and perceptions of job satisfaction from the perspective of elementary teacher assistants. While key in the field of education, research focused on the position of teacher assistant is lacking, suggesting the need for a critical view of the role. A qualitative study was designed to examine the key components of the perceptions of job satisfaction, the motivating factors leading to it, and the perceptions of the position through the lens of the teacher assistant. Five elementary teacher assistants from a single school in a southern state participated in semi-structured interviews. Key …
Developing Site Index Curves And Exploring Growth Efficiency Variation In Longleaf Pine Planted On Marginal Agricultural Land In Georgia, Usa, Jabryan Pegues
Developing Site Index Curves And Exploring Growth Efficiency Variation In Longleaf Pine Planted On Marginal Agricultural Land In Georgia, Usa, Jabryan Pegues
Theses and Dissertations
With the relative success of the Conservation Reserve Program (CRP), there is a considerable amount of longleaf pine (Pinus palustris Mill.) trees planted on marginal agricultural land, with little to no guides for productivity management. This study was conducted in four distinct age classes of longleaf pine plantations at The Jones Center at Ichauway in Southwest Georgia, USA. Most of these stands were commercially thinned in 2014 and some were impacted by Hurricane Michael in 2018. I developed site index equations to represent growth trajectories of these stands while incorporating growth starting from ground level. Additionally, the concept of tree-level …
A Mathematical Theory Of Epitaxial Growth, Brock C. Price
A Mathematical Theory Of Epitaxial Growth, Brock C. Price
Theses and Dissertations
In this dissertation we investigate several PDE models of Epitaxial growth. These models are fourth-order PDE’s featuring exponential nonlinearities as well the p-Laplacian and 1-Laplacian. The presence of the exponential nonlinearity is what provides the main mathematical difficulty. Theexponent in particular does not have enough estimates to guarantee any compactness. Because of this, one has to allow the inclusion of a singular portion to the exponent in the sense of the Lebesgue decomposition theorem. In thefirst chapter weinvestigate a related epitaxial growth, with transition rates of the Metropo lis variety and a linear exponent. The metropolis rates induce an extra …
Unraveling Quantum Properties Of Novel Two-Dimensional Systems Using A First-Principles Approach, Binod Regmi
Unraveling Quantum Properties Of Novel Two-Dimensional Systems Using A First-Principles Approach, Binod Regmi
Theses and Dissertations
We used first-principles density functional theory (DFT) to investigate the structural, electronic, and magnetic properties of an oxygen crystal in a copper slab, a ferrimagnetic electride with highly tunable magnetic anisotropy energy (MAE), and the Fermi surface analysis of different kagome metal phases. The Perdew-Burke-Ernzerhof (PBE) exchange-correlation functional was used in the Vienna ab initio simulation package (VASP) for all these calculations. Because of dimensionality reduction, the electronic properties of copper change significantly at the two-dimensional (2D) scale due to whichwe observe more reconstruction in the geometry of the Fermi surface. Dimensionality reduction also influences charge transport. Moreover, we present …
Feed-Based Strategies To Improve Poultry Production Efficiency, Anna Kathryn Riggs
Feed-Based Strategies To Improve Poultry Production Efficiency, Anna Kathryn Riggs
Theses and Dissertations
The poultry industry continues to make significant strides in efficiency and innovation, particularly through advancements in nutrition. This thesis explores two key areas within broiler nutrition that are essential to supporting sustainable, cost-effective poultry production. First, the potential of a next-generation exogenous carbohydrase enzyme blend containing beta-mannanase and endo-glucanase is investigated when supplemented into reduced-energy, all-vegetable diets based on corn, soybean meal, and corn distillers dried grains with solubles in male broilers over a 42-day grow-out period, including processing (Chapter II). Second, the thesis examines the use of modeling strategies such as cubic, quadratic, kernel and smoothing spline to predict …