Digital Commons Network^™

Floating Signifiers: Ai, Semiotics, And The Crisis Of Meaning In Music, Kehinde Aruwajoye

Dartmouth College Master’s Theses

This thesis examines how AI-generated music disrupts traditional meaning-making processes in musical expression. Through semiotic analysis (Saussure, Peirce) and cultural theory (Hall), I demonstrate how AI produces technically proficient but culturally hollow compositions, what I term "floating signifiers." Case studies reveal AI's inability to replicate the lived experiences that give music its depth, despite accurate stylistic reproductions. The work identifies three fundamental losses: contextual grounding, authentic hybridity, and historical consciousness. I propose ethical frameworks for human-AI collaboration that preserve music's essential humanity while leveraging algorithmic capabilities. Ultimately, this research shifts the debate from technical possibility "Can AI compose?" to cultural …

Motion Planning For A Flexible Modular Raft Robot, Chun-Yi She

Dartmouth College Master’s Theses

This thesis presents a hierarchical motion planning framework for SoftRafts, a modular and deformable aquatic robot capable of performing locomotion and manipulation tasks on water surfaces. SoftRafts consist of soft and rigid components that enable structural reconfiguration, offering adaptability in unstructured aquatic environments.

To address the complexity of planning in high-dimensional, deformable systems, the proposed method uses a bounding-shape abstraction, specifically, enclosing circles and rectangular bounding boxes to simplify motion planning. These enclosures abstract the robot's overall shape, reducing the high-dimensional planning problem into a lower-dimensional problem. A global planner uses a probabilistic roadmap (PRM) to compute a collision-free path …

Toward General Purpose Llms: From Domain Alignment To Multimodal And Multi-Agent Systems, Thang Nguyen

Dartmouth College Master’s Theses

Large Language Models have shown remarkable capabilities, but their generalization across domains, modalities, and collaborative settings remains limited. This work explores how LLMs can be adapted along three dimensions: domain specialization, multimodal processing, and multi-agent reasoning. First, we introduce a reward-guided retrieval mechanism that fine-tunes the retrieval component of a language model using preference-based supervision, improving response relevance in specialized domains. Building on this, we design a multi-agent framework for complex information-seeking tasks, where distinct agents handle query clarification, evidence extraction, and answer synthesis, enabling robust reasoning without additional model training. Extending beyond language, we investigate how LLMs can operate …

Action This Day: The Mathematics And Machinations That Bested The German Enigma, Jonah Weinbaum

Dartmouth College Master’s Theses

This thesis presents a comprehensive and chronological overview of cryptographic techniques designed to break Enigma, beginning in 1932 and culminating in the creation of the Turing-Welchman Bombe. We discuss the mathematical theory and electromechanical implements used to decode one of history's greatest ciphers.

Reexamining the Bombe through the lens of modern group theory, we critique Alan Turing's estimation of the number of "stops" that the Bombe produces for various plaintext-ciphertext pairing structures. To address its limitations, we introduce a new framework for estimating the number of stops by extending John Dixon's theorem concerning the probability that uniformly distributed elements of …

Paleomagnetic Assessment Of The Appekunny And Greyson Fms., Lower Belt Supergroup, Montana, Usa., Olivia C. Moehl

Dartmouth College Master’s Theses

The Belt Supergroup of the northwestern United States is one of the most extensive Mesoproterozoic sedimentary successions in North America. Although certain stratigraphic units have been well studied, correlations across the entire outcrop region remain unresolved. This project uses magnetostratigraphy and lithostratigraphy to investigate a potential lateral equivalency between the 1.4 billion-year-old (Ga) Appekunny Formation (Fm.) in Glacier National Park, MT and the 1.4 Ga Greyson Fm. in the Helena Embayment, MT. Both formations consist predominantly of shallow-water mudstones and contain the only North American occurrences of Horodyskia moniliformis, one of the oldest known macrofossils. Paleomagnetic analyses were conducted on …

Aestheticizing And Engendering Disease: The Case Of Tuberculosis, Abigail Dollries

Dartmouth College Master’s Theses

This thesis examines how tuberculosis, known in the nineteenth century as “consumption,” was aestheticized in American cultural and medical discourse, particularly in industrial cities of the North between 1830 and 1850. It addresses the paradox at the heart of the disease’s representation: while tuberculosis was medically pathologized, it was simultaneously romanticized, especially when afflicting elite white women. The central problem explored is how this aestheticization of illness functioned to reinforce gender, class, and racial hierarchies by transforming suffering into a symbol of virtue, refinement, and social status. Using a cultural-historical methodology, this project analyzes a range of sources, including medical …

Application Of Person-Centered Therapy To Educator Preparation For Relationships With Families, James M. Mcginn

Journal of Excellence in College Teaching and Learning

This article examines the importance of preparing future educators for effective partnerships with students’ families, a priority emphasized in contemporary educator standards. Despite evidence that strong educator-parent relationships foster academic and socio-emotional growth, many educators feel ill-equipped to engage with families confidently. Drawing upon the field of school counseling, this paper explores how concepts and pedagogies from counseling— particularly Person-Centered Therapy (PCT)—can inform educator preparation. The article provides an overview of the school counseling profession, reviews the foundational principles of PCT, and discusses how these approaches can be integrated into higher education curricula. By adopting non-directive, relationship-centered strategies rooted in …

“They're Like Slash”: Multimodality And Embodied Agency In Students' Critical Engagements With Texts, María José Aragón, Meghan Corella, Nora W. Lang

Faculty Research, Scholarly, and Creative Activity

Despite recent calls to more fully incorporate multimodal perspectives into literacies research, there is still limited scholarship examining how students critically engage in reading activities by drawing on embodied practices. Racially and linguistically minoritized students are particularly disadvantaged by dominant logocentric and developmentalist approaches, which privilege oral and written discourse and often position these students as less capable of performing complex literacy practices. Drawing from three independent ethnographic studies, our multimodal interactional analysis examines how students of a range of ages and raciolinguistic backgrounds use embodied actions and other semiotic resources to agentively navigate text, task, and ideological constraints in …

Values In Academe: Examining Productivity For Faculty Of Color, Emi Kamei, Young K. Kim, David Edens

Journal of Excellence in College Teaching and Learning

Using a quantitative research design, this study examined two productivity-related outcomes, scholarly productivity and community-minded engagement practices, and how these vary for faculty of color in U.S. higher education institutions among different racial/ethnic subgroups. This study utilized data collected from the 2016-2017 Faculty Survey administered by the Higher Education Research Institute at the University of California, Los Angeles, and a sample of 26,410 faculty members nationwide. The findings suggest that scholarly productivity tends to increase when faculty have spent time writing research grants or have protected time available for research scholarship, and tends to decrease when higher teaching loads are …

All Things To All People: Identifying Factors Influencing Superintendent Salary, Kevin Hub, George Gill Hunter

Journal of Excellence in College Teaching and Learning

This research investigates the factors influencing superintendent salaries in Kentucky, focusing on the linear relationship between seven independent variables and superintendent salary. These variables include student enrollment, average teacher salary, total number of certified staff, per pupil assessment, student poverty, student disability, and student achievement. The study utilized data from 169 Kentucky public school districts during the 2022-2023 school year, collected from various public sources like the Kentucky Department of Education (KDE). The primary method of analysis was the Pearson correlation coefficient, which examined the strength and direction of the relationship between each independent variable and superintendent salary. This study …

Transforming Online Courses: Practical Strategies For Educators, Jacqueline A. Gilbert, Kelly G. Manix, Kristie A. Abston

Journal of Excellence in College Teaching and Learning

In this article, we examine strategies for enhancing student engagement in online higher education courses through targeted course restructuring. Given the increased demand for high-quality online learning, it is essential for institutions to adopt a proactive, student-focused approach to course design and delivery. The paper highlights research underscoring the critical connection between active student participation in online courses and improved academic performance. It emphasizes the fundamental need for strategic organization and consistent course design to foster engagement and optimize student learning. Our research explores the value of soliciting and implementing student feedback through multiple mechanisms, including pre-term and midterm surveys, …

Town And Country Garden Club Papers - Accession 1434, Garden Club, Town And Country

Manuscript Collection

The Town and Country Garden Club Papers includes photographs from various club events, newspaper clippings, awards and descriptions of Awards, and yearly member packets containing the names of members, monthly meetings and socials, by-laws, constitution and various information.

The Association Of Social Determinants Of Health And Type Ii Diabetes Self-Management Among Persons Living With Physical Disability (Mobility & Visual Impairments), Anita Aboagye

All ETDs from UAB

Type II Diabetes (T2D) management yield positive outcomes in glycemic control, lifestyle behaviors, knowledge enhancement, and self-care. Persons with disability (PWDs) - regardless of disability type - are faced with additional challenges in diabetes self- management. Moreover, PWDs exhibit adverse outcomes across various measures of social determinants of health (SDOH) compared to individuals without disabilities. This dissertation explored four research aims to examine the impact of adverse SDOH experiences on T2D self- management among persons with physical disability utilizing a preprint/reprint format - with each aim leading to a manuscript. Secondary data analysis using the 2022 Behavioral Risk Factor Surveillance …

Numerical Analysis And The Deal.Ii Implementation Of An Efficient And Robust Parameterized Ensemble Algorithm For Navier Stokes Flow In The Convection-Dominated Regimes, Brandiece Berry

All ETDs from UAB

Ensemble methods are widely used to approximate solutions for the Navier-Stokes Equations to account for inherent uncertainties within the system. This work goes about the numerical analysis and efficiency assessment of a fully discretized Ensemble Eddy Viscosity (EEV) model for the incompressible Stochastic Navier-Stokes Equations. The model is efficient due to the use of ensemble methods. Through a single coefficient matrix for $J$ realizations, we reduce computational cost and thereby ensure computational efficiency. It is found that the model is robust with the inclusion of the eddy viscosity term, as an additional uncertainty quantification. Finally, we verify theoretical convergence rates …

Wear Resistance Of 3d Printed Occlusal Splint Materials, Pierpont Flanders Brown

All ETDs from UAB

Statement of problem: Three-dimensional (3D) printing offers an efficient method to produce occlusal devices (splints). However, their wear resistance is poorly understood. Purpose: The purpose of this in vitro study was to compare the wear resistance of flexible and rigid 3D printed occlusal splint materials to milled and conventionally processed occlusal splint materials. By establishing such a comparison, this study will help provide clinicians with greater knowledge of which materials and methods will provide their patients with the most wear resistant and durable occlusal splint possible. Material and methods: Identical sized blocks (n=8) of 3 flexible 3D printed materials (KeySplint …

Reelin Regulation Of Striatal Physiology And Cocaine Reward, Kasey Lynn Brida

All ETDs from UAB

Drugs of abuse activate defined neuronal populations in brain reward structures such as the nucleus accumbens (NAc), which are thought to promote the enduring synaptic, circuit, and behavioral consequences of drug exposure. While the molecular and cellular effects arising from experience with drugs like cocaine are increasingly well understood, the mechanisms that sculpt NAc neuron participation are largely unknown. Here, we leveraged unbiased single-nucleus transcriptional profiling to identify expression of the secreted glycoprotein Reelin (encoded by the Reln gene) as a marker of cocaine-activated neurons within the rat NAc. Multiplexed in situ detection confirmed selective expression of the immediate early …

Food Insecurity Among Graduate Students At The University Of Alabama At Birmingham, Amy Elizabeth Callahan

All ETDs from UAB

College food insecurity (FI) has grown steadily as a field of research over the past fifteen years. Existing research primarily has demonstrated that FI is a persistent problem with various risk factors and myriad potential impacts on students, though graduate students are largely understudied in favor of undergraduate and aggregated student populations. Given the unique circumstances graduate students face, as well as expected demographic differences such as age and household characteristics, this is a serious gap in the literature. This dissertation aims to investigate graduate student food insecurity in the United States, and particularly at the University of Alabama at …

Platal Expansion Using The Invisalign Palatal Expander "Ipe", Hassan Chihab

All ETDs from UAB

Palatal expansion has been used in orthodontics to treat a narrow maxilla and to primarily correct posterior dental crossbites. In younger patients, palatal expansion can readily be achieved through opening of the mid-palatal suture, as it is not fused at that age. As the mid-palatal suture matures, expansion will gradually be difficult to achieve, and more dental expansion is obtained rather than skeletal. In addition, there is a tendency to get more dental tipping. Palatal expansion has been recommended not only to correct crossbites but also to improve breathing in patients with sleep disorders such as obstructive sleep apnea (OSA). …

Co-Creating A Social, Emotional, And Mental Health Well-Being Group For College Students With Disabilities And/Or Chronic Health Conditions And Are Registered With Disability Support Services, Consuelo A. Click Copeland

All ETDs from UAB

ABSTRACT Nearly one in four adults in the United States report living with a disability (Centers for Disease Control and Prevention, 2024). According to the National Center for Educational Statistics (2023), approximately 21 percent of undergraduate students and 11 percent of postbaccalaureate students report having a disability. Students with disabilities in college encounter considerable obstacles that can adversely affect their mental health, academic performance, and general well-being. These obstacles encompass social isolation, stigma, and insufficient personalized support services, resulting in increased levels of anxiety, depression, and dropout rates compared to students without disabilities. Despite the critical need, there is a …

Mandatory Grade Retention: A Phenomenological Study Of The Lived Experiences Of Principals During The Implementation Of The Alabama Literacy Act, Kiana Billings Coleman

All ETDs from UAB

ABSTRACT For over 40 years, the standards-based reform movement has significantly influenced educational policy in the United States (Shanahan, 2014). Educators across the country are under increasing pressure to improve student achievement as states implement policies that link test scores to accountability measures. Recently, the adoption of mandatory grade retention policies has emerged as a popular intervention for addressing low academic performance. Effective leadership is vital to the success of policy initiatives. However, there is limited research on how school principals experience mandatory retention policies. Understanding how administrators navigate retention policies is essential for identifying effective leadership strategies that facilitate …

Analysing Post-Mortem Interval By Blood Metabolomics, Nishitha Reddy Nishitha Chitla

All ETDs from UAB

Accurate estimation of the postmortem interval (PMI) is a critical aspect of forensic investigations, aiding in time-of-death determination. This study employs High-Performance Liquid Chromatography Mass Spectroscopy (HPLCMS) and Gas Chromatography-Mass Spectrometry (GC-MS) to analyze postmortem metabolic changes and identify potential biomarkers for PMI estimation analyses through metabolomics. Blood serum samples from ante mortem samples (AMS) and postmortem samples (PMS) were categorized into Control (0 hrs), Early PMI (25–58 hrs), and Late PMI (92–163 hrs) groups. Multivariate statistical analyses, including Partial Least Squares-Discriminant Analysis (PLS-DA), Variable Importance in Projection (VIP) scoring, and metabolic pathway evaluations, were conducted to assess biochemical alterations …

Elucidating The Proteolytic Determinants Of Flavivirus Infection, Lochlain C. Corliss

All ETDs from UAB

Flaviviruses, recently renamed to orthoflaviviruses, are small, enveloped viruses with positive-sense, single-stranded RNA (ssRNA) genomes of about 11 kilobases. Upon cell entry and uncoating, the viral RNA (vRNA) is directly translated at the endoplasmic reticulum (ER) as a single polyprotein that is then processed by the viral and cellular proteases into 10 functional subunits, consisting of three structural proteins and seven nonstructural (NS) proteins. Among the NS proteins are NS2B and NS3, which form the viral protease complex. NS3 consists of a serine protease domain while NS2B is anchored to the ER and contains a cytoplasmic loop that serves as …

Risk, Promotive, And Protective Factors In Adolescence For Incarceration In Adulthood: A 20 Year Longitudinal Study, Carlos Espinoza

All ETDs from UAB

The high rate of incarceration in the United States presents a public issue that affects individuals, families, and communities. Empirical research has identified several adolescent risk factors linked to an increased likelihood of incarceration in adulthood, such as individual delinquency, peer delinquency, parental antisocial behaviors, and neighborhood disorder. However, much less is known about factors that might promote or protect against incarceration specifically. Factors associated with a reduced likelihood of delinquent behavior (a precursor to incarceration) include higher empathy, prosocial peers, parental nurturance, and neighborhood connectedness. These factors may similarly reduce the risk of incarceration, just as they reduce the …

Discarded People, Amber Harris

All ETDs from UAB

ABSTRACT This is the first chapter of the novel, Discarded People, a character-driven story about a group of young Black friends navigating love, identity, and community. As they form deep connections with one another, they face personal struggles that challenge their sense of belonging and self-discovery. The narrative explores themes of family, friendship, and the search for purpose, while highlighting the complexities of building a chosen family amidst personal and societal pressures. In chapter one, the main characters are introduced; Winnie, Franklin, Jelani, Adanna, Eban and Chance. As the characters prepare for their final year in high school while navigating …

Context-Dependent Functional Connectivity During Attention Orienting And Reorienting: Comparing Individuals With Schizophrenia And Controls, Hyun Freeman

All ETDs from UAB

Attentional deficits are a well-established feature of schizophrenia, impacting various functional domains. Previous research suggested altered connectivity within attention networks may underlie these deficits, but few studies have examined how these net-works dynamically interact during different types of attention processes. In this study, we investigated functional connectivity patterns during attentional orienting and reori-enting to social and nonsocial cues in 25 individuals with schizophrenia and 25 controls. Participants completed a modified Posner spatial cueing task with both social (eyes) and nonsocial (arrows) cues during fMRI scanning. Using generalized psychophysiological interaction analysis with the left lateral occipital cortex (LOC) as a seed …

Stimulation And Quantification Of Dopamine-Associated Behaviors, Hunter Goffinett

All ETDs from UAB

Dopamine (DA) is a neurotransmitter involved in the regulation of essential behaviors, including motor control and reward processing. Alterations in DA levels can significantly modulate these behaviors: increased DA release is associated with heightened locomotion and enhanced preference for rewarding stimuli. Therefore, measuring behavioral changes in vivo provides critical insight into DA release and function. In this study, we quantified DA-associated behaviors by radiolytic stimulation of the Drosophila A-isoform of the transient receptor potential ankyrin type-1 A (dTRPA1(A)) channel and investigated how the human-immunodeficiency virus (HIV) and its secreted protein, the trans-activator of transcription regulatory protein (Tat), alter drug-induced behaviors. …

Occupational Exposure To Cooking Emissions And Evaluation Of Ventilation System In Restaurant Kitchens, Matthew Kaleb Hanvey

All ETDs from UAB

Background: In the restaurant environment, there are many harmful contaminants generated during the cooking process that kitchen workers are potentially exposed to. The purposes of this study were to evaluate the potential exposure to aldehydes and respirable particles among restaurant kitchen workers and to examine the ventilation performance of the kitchen exhaust hoods. Methods: There were three restaurants recruited for this study and they cooked seafood/poultry (Restaurant 1), farm style foods (Restaurant 2), and finger foods (Restaurant 3). The three restaurants had wall-mounted canopy hoods. Restaurant 1 had two hoods, Restaurant 2 had two hoods, and Restaurant 3 had one …

Analysis Of Gas Station Drugs Using Gas Chromatography Mass Spectrometry And Fourier Transform Infrared Spectroscopy, Megan Joos

All ETDs from UAB

Gas stations and head shops are a seemingly safe and legal marketplace for drug purchase. However, although marketed as dietary supplements or cognitive enhancers, the products sold there have been known to contain psychoactive substances which may be mislabeled or actually contain regulated substances. This study investigates the composition of such products, specifically those labeled as kratom and non-kratom Mitragyna species using gas chromatography-mass spectrometry (GC-MS) and those labeled as phenibut using GC-MS and fourier transform infrared spectroscopy (FTIR). Samples were acquired from retailers in the Birmingham, AL area. The products underwent both qualitative and quantitative analysis of their ingredients …

Unveiling The Other: Feminine And Colonial Subjugation In Mary Elizabeth Braddon's England, Kaylie Rastegar

All ETDs from UAB

Just a few years after England experienced major societal shifts, both domestically in the passage of revolutionary women’s rights legislation and internationally in the Indian Mutiny, Mary Elizabeth Braddon’s Lady Audley’s Secret (1862) offered Victorian readers a way to confront their anxieties and uncertainties about the nation’s future. The traditional power structures of British imperialism and patriarchy faced growing resistance as Indian rebels and women’s rights reformers challenged their assumed natural authority. Past scholarship contextualizes the novel within these major historical events, viewing them in relation to each other in which the struggles of Indian colonial subjects equate to those …

Mesenchymal Hippo Signaling In Lung Development And Disease, Kylie Klinkhammer

All ETDs from UAB

During both lung development and regeneration, the proper coordination of different cellular populations working in concert are vital to proper development and wound repairs. Myofibroblasts, highly contractile mesenchymal cells, are vital the organization of cells during lung development and to the remodeling of the extra cellular matrix (ECM) during regeneration. As important as myofibroblasts are, their apoptosis or differentiation to a less contractile phenotype is equally important to normal development and regenerative processes. Excessive differentiation of myofibroblasts or the improper localization of myofibroblasts are associated with pulmonary fibrosis, which is characteristic of lung disease, such as bronchopulmonary dysplasia or idiopathic …