Digital Commons Network^™

Impact Of Cigarette Smoke On Immune And Stromal Cells, Justin Wong

Master's Projects

Cigarette smoke is a plight on human health, being a major contributor to lung diseases. The aryl hydrocarbon receptor (AHR) directs immune regulation and metabolic adaptation in response to environmental toxins. This study investigates transcriptomic changes between wild-type and AHR knockout mouse lung tissue under smoke and air conditions. Single-cell RNA sequencing data were generated by the Butcher Lab and analyzed in Seurat for differential gene expression (DGE) analysis. A two way ANOVA framework was used with DGE analysis to classify genes as smoke induced or suppressed in an AHR dependent or independent manner, and these gene sets were analyzed …

Safe-R2r: A Safety-Aware And Budget-Optimized Retrieval Controller For Rag Systems, Mandar Sunil Gondane

Master's Projects

Retrieval-Augmented Generation (RAG) improves factual grounding in large language models by incorporating external evidence during inference. However, most RAG systems rely on fixed retrieval strategies that ignore query difficulty, computational cost, and prediction uncertainty. This project introduces SAFE-R2R (Safety-Aware and Budget-Optimized Reason-to-Retrieve), a retrieval controller that treats retrieval as a query-dependent decision problem. SAFE-R2R organizes retrieval into a multi-rung ladder ranging from no retrieval to deeper retrieval with reranking. At each rung, the system generates an answer, computes reliability signals, and combines them into a risk score used within a conformal calibration framework to decide whether to accept the answer …

Experiencing Followership: A Hermeneutic Phenomenological Study Of Executive Assistants In Higher Education, Trina R. Smith

College of Graduate Studies: Theses & Dissertations

The burgeoning study of followership needs more follower-centric qualitative research that describes follower beliefs, attitudes, perceptions, and experiences. The traditional view of leadership is that a single person is responsible for the success or failure of a project, team, or organization. However, scholars have suggested that 80% of the success of a team or organization may be attributed to followership. Followership research is rapidly expanding, and scholars are calling for more empirical follower-centric research to add to the discipline. Likewise, the executive assistant (EA) position is one of increasing responsibility, but there are few empirical studies on EAs' experiences across …

From Panels To Power: Empowering Middle Schoolers Through Comics, Ali Geigerman

College of Graduate Studies: Theses & Dissertations

This dissertation explores how craftivism, grounded in feminist theory and informed by multiliteracies, can be used to disrupt and reclaim the traditionally male-dominated genre of comics for girls and non-binary students. While the New London Group’s concept of multiliteracies expands definitions of literacy to include visual, spatial, and multimodal forms of meaning-making, it does not fully address questions of power, representation, and voice. Drawing specifically on the work of bell hooks as a theoretical anchor, this study positions comics not only as legitimate multiliterate texts but also as sites of feminist intervention. By blending multiliteracies, feminism, and craftivism, this research …

Subliminal Nature: Dialogues In Performance, Carlos A. Carvajal

College of Graduate Studies: Theses & Dissertations

I will discuss how my artwork sets for the development of various layers of experience within the same context and space, to stimulate the subconscious of the audience. This layering is a combination of stimuli of senses (the inclusion of sound and active participation) and the syntax of the dynamics of audience interaction. Sound and visuals create a performance to acknowledge and read, while also pertaining to participation by a sort of instruction for the viewer to partake in the work. These are all different layers of experience that happen simultaneously within a piece, setting up different possible outcomes from …

Statistical Quality Control: A Bayesian Framework, Jakia Jaber Tunal

College of Graduate Studies: Theses & Dissertations

In many industries, it is important to assess whether a machine or system is operating within acceptable limits or has gone out of control. This project applies Bayesian statistics to monitor a process over time and detect changes in its behavior. First, initial data are collected to understand the system’s typical performance and to form a starting prior distribution. As new observations arrive over time, the prior is updated through Bayesian inference, combining past information with incoming data. This iterative updating creates a continuous monitoring framework that adapts as more evidence becomes available. When the updated results suggest that the …

‘Prov[Ing] What You Already Know’: The Overreliance On Medical Evidence In Adjudicating Ontario Disability Support Program Applications, Alison Imrie

Journal of Law and Social Policy

The Ontario Disability Support Program (ODSP) relies heavily on medical evidence when adjudicating applications. In doing so, it positions healthcare providers as the undisputed experts on applicants’ disabilities. This poses particular challenges for applicants with under-recognized or misunderstood medical conditions like Myalgic Encelphalomyelitis/Chronic Fatigue Syndrome (ME/CFS), who may struggle to obtain adequate medical care and thus adequate medical evidence for the purpose of ODSP applications. Through qualitative interviews with five individuals with ME/CFS who applied for ODSP, this paper illuminates the particular challenges faced by those with ME/CFS and other under-recognized disabilities in the ODSP application process. Drawing on literature …

2026 Conference Program, Georgia Southern University

SoTL Commons Conference

No abstract provided.

Common Data Set, 2025-2026, Planning, Research, And Policy Analysis

Common Data Set (2001-present)

Common Data Set 2025-2026 for Illinois State University

Embarazo Prematuro Y Abandono Escolar En Jóvenes Inmigrantes Hispanas: Estudio De Caso En Una Academia De Educación En Español, Danays Carbonell Dieguez

Theses and Dissertations

Esta disertación aplicada tuvo como propósito explorar las experiencias de jóvenes inmigrantes hispanas que abandonaron sus estudios debido a embarazos prematuros mientras participaban en el programa Success Management Academy (SMA), una academia de educación en español ubicada en el contexto de Miami-Dade County Public Schools. El estudio se desarrolló desde un enfoque cualitativo mediante un diseño de estudio de caso, con el fin de comprender los factores personales, familiares, educativos, socioeconómicos y culturales que influyeron en la interrupción de sus trayectorias escolares.

La investigación incluyó cinco jóvenes inmigrantes hispanas provenientes de Centroamérica que estuvieron vinculadas al programa SMA y experimentaron …

Reading Achievement And Response To Intervention Participation Among Socially Promoted Elementary Students In Grades 3 To 5: A Comparative And Predictive Analysis, Paige Griffin

Theses and Dissertations

This applied dissertation examined reading achievement among socially promoted elementary students in Grades 3 to 5 by investigating the relationship between Response to Intervention (RTI) participation and Spring I-Ready Reading Diagnostic scaled scores. Although RTI is widely implemented as a multi-tiered framework to provide targeted instructional support for struggling readers, limited research has examined reading outcomes among socially promoted students in rural elementary schools using standardized reading assessment measures.

This quantitative, non-experimental, causal-comparative study analyzed secure, de-identified archival student data obtained following approval from the Nova Southeastern University Institutional Review Board and authorization from school district personnel. The study included …

Exploring New Poly-Anion Based Materials For Lithium – Ion Battery Cathodes, Sutapa Bhattacharya

Doctoral Dissertations

The escalating global demand for sustainable energy storage solutions has driven intensive research into novel electrode materials. Polyanion-based cathode materials have emerged as promising candidates due to their structural stability, safety, and voltage tunability enabled by the inductive effect of polyanionic groups. This research explores the synthesis, crystal structure, and electrochemical performance of new polyanion-based cathode materials featuring vanadium, molybdenum, and iron within phosphate and selenite frameworks.

Novel selenite-based materials, such as LiFe(SeO₃)₂ and Li₀.₂₅V₂O₃(SeO₃)₂, were synthesized and characterized, revealing stable electrochemical cycling associated with Fe2+/Fe3+ and V⁴⁺/V⁵⁺ transitions. Additionally, a systematic investigation was conducted on molybdenum phosphate compounds, including …

Security And Energy-Efficiency In Federated Learning, Priyesh Ranjan

Doctoral Dissertations

Federated Learning (FL), which facilitates collaborative model training and protects users' privacy, has drawn great interest from the research community. With FL, the participants train their models on local data and submit the corresponding updates for aggregation to a server. While concealing the participants' identities, FL may attract adversaries aiming to hamper the underlying model. These adversaries aim to submit malicious weight updates that corrupt the performance of the server model. Further, these models when communicated to the participating clients extend the behavior which is undesirable. Additionally, FL suffers from increased energy consumption at the edge device level due to …

Temperature-Dependent Dielectric Function Of Solids From Coupled Oscillators With Radiation Reaction: Application To Atom–Surface Interactions, Tuhin Kanti Das

Doctoral Dissertations

In this dissertation, we propose a uniform functional form of the dielectric function of solids that is applicable over a wide range of frequencies. We apply our model to describe the dielectric function of two technologically important materials: silicon and calcium fluoride. The temperature dependence of their dielectric functions is also described using simple analytic forms. We found that a generalized Sellmeier-type model with complex denominators (“damped oscillators”) does not lead to a satisfactory fit of experimental data for the dielectric function. In contrast, our model, which is analytically only slightly more involved (“complex oscillator strengths”, complex numerators), allows us …

Investigations In Hydrogen Ironmaking, Joseph William Govro

Doctoral Dissertations

The purpose of this research is to contribute to the Grid Interactive Steelmaking with Hydrogen (GISH) project. This research investigates the viability of both producing and melting Direct-Reduced Iron (DRI) utilizing hydrogen. Conventional CO reduced DRI will be referred to as “C-DRI” and DRI produced using hydrogen gas will be referred to as “H-DRI”.

An H-DRI pilot plant was constructed in Golden Colorado. The pilot plant was commissioned and successfully operated four campaigns. Process improvements were made throughout the campaigns and the process was optimized. In addition to running the pilot plant in a pure hydrogen condition, the pilot plant …

Zirconium Carbide Based Materials For Extreme Aerospace Environments, Nathaniel Hyman Blatt

Doctoral Dissertations

This research focuses on the processing and properties of zirconium carbide-based materials to promote their use in extreme environment aerospace applications, including nuclear thermal propulsion and hyper sonics. Several carbide systems including ZrC, ZrC-Mo cermets, (Zr, Nb)C, and a high entropy carbide were developed. The ZrC-Mo cermet was studied extensively to understand the effect of starting carbide grain size on the final microstructure, composition, elastic moduli, hardness, fracture toughness, room and elevated temperature flexural strength, thermal diffusivity, electrical resistivity, thermal expansion coefficient, and thermal conductivity. It was shown that heat transport in the cermets was dominated by the ZrC phase …

Essays On Accelerated Failure Time Models For Recurrent Event Data, Emmanuel Masavo Djegou

Doctoral Dissertations

Recurrent event data arise in many fields such as medicine, reliability, insurance, and economics, where the same event may occur repeatedly for a subject. Accelerated Failure Time (AFT) models provide an intuitive framework for relating covariates to event times and offer a useful alternative to proportional hazards models, allowing direct prediction of event timing under right censoring. However, existing AFT extensions for recurrent events, such as accelerated gap time (AGT) models, often fail to account for interventions between events and may not capture complex temporal patterns.

In this work, we first propose a class of semiparametric AGT models incorporating an …

Machine Learning Based Automation Of Pcb Pdn Design And Optimization, Haran Manoharan

Doctoral Dissertations

The rapid increase in power density and stringent power-integrity requirements in modern System-on-Chip (SoC) platforms have made Power Delivery Network (PDN) design an increasingly complex, multi-stage challenge. Critical decisions must be made both during pre-layout planning, such as stackup configuration, power-plane geometry, and early decoupling capacitor (decap) budgeting, and during post-layout refinements. Traditional heuristic and evolutionary optimization techniques struggle with scalability, require extensive manual iteration, leading to long runtimes and limited adaptability across varying board configurations. To address these challenges, this work proposes a unified reinforcement-learning-driven framework for automated PDN synthesis and decap optimization that spans both pre-layout and post-layout …

Incremental Cluster Validity Indices And Their Role In Interpreting Lifelong Learning Systems, Niklas Max Melton

Doctoral Dissertations

Clustering and supervised learning are often treated as distinct paradigms, yet both rely on structure in feature space. This dissertation investigates the relationship between cluster validity indices (CVIs) and supervised learning in real-time and lifelong learning settings where data arrive incrementally and cannot be revisited. Across four studies, it develops methods for online cluster validation, uses supervised learning to improve their interpretability, and applies these ideas to evaluating performance degradation in continual learning.

The first study extends incremental cluster validity indices (iCVIs), enabling widely used validation metrics to operate in streaming environments. Experiments on synthetic and real-world datasets show systematic …

Advancing Coal Rib Support Design Through The Integration Of Field Studies And Numerical Simulations, Alper Kirmaci

Doctoral Dissertations

Coal rib stability remains a major safety concern in U.S. underground coal mines, with rib failure-related injuries and fatalities still occurring. A key challenge is the lack of a standardized methodology for designing rib support systems that can address varying geological conditions. As a result, many mines rely on trial-and-error or traditional practices, leading to inconsistent designs. This research aims to develop a systematic methodology for rib support design to improve coal rib stability in U.S. mining operations.

The study consists of: i) field monitoring in active room-and-pillar coal mines, ii) in-situ pull-out tests on coal ribs, iii) numerical model …

Critical Parameters Controlling Oxide Scale Formation And Hydro-Descaling Efficiency During Steelmaking, Tochukwu Princewill Ojiako

Doctoral Dissertations

In modern steelmaking, cast slabs are exposed to high-temperature oxidizing environments during secondary cooling, reheating, and hot rolling, resulting in the formation of multilayer oxide scales on the steel surface. These scales interact with mold-flux residues originating from the casting process (CC). The morphology, chemistry, and adhesion of oxide scale strongly influence its removability during high-pressure hydraulic descaling and ultimately determine the surface quality of hot-rolled products. However, the mechanistic relationship between oxide scale evolution, scale-steel interfacial structure, and hydraulic descaling performance remains poorly understood.

This dissertation investigates oxide scale formation, modification, and removal in low-carbon thin-slab steels produced by …

Estrategias De Enseñanza, El Rol De Los Padres Y El Logro De Los Objetivos De Aprendizaje De Los Alumnos Del Cuarto Año De Una Escuela Alternativa De Puerto Rico, Marangely González Tavárez

Theses and Dissertations

Se examinaron las características de los docentes, el rol de los padres y el logro académico de los estudiantes de cuarto año en alcanzar sus metas de aprendizaje en la escuela alternativa ASPIRA de Puerto Rico. Estas instituciones buscan atender a jóvenes de 14 a 21 años que han dejado o están en riesgo de deserción en la escuela tradicional, ofreciendo un currículo flexible, atención personalizada y apoyo psicosocial. La investigación se fundamentó en la necesidad de generar evidencia sobre las competencias docentes y la percepción estudiantil en contextos educativos no tradicionales, dado que la literatura existente se ha centrado …

Variable Temperature And Moisture Requirements For Germination Within Populations Of Kochia (Bassia Scoparia) In Field Margins, Brian Schutte, Rebecca Creamer

Entomology, Plant Pathology, & Weed Science: Datasets

No abstract provided.

Global Characterization Of Stratospheric Sulfate Aerosols By The Atmospheric Chemistry Experiment (Ace), Peter Bernath, Manish Bhusal, Michael Lecours, Chris Boone

Chemistry & Biochemistry Faculty Publications

Stratospheric sulfate aerosol (SSA) is an important part of the Earth's climate system. SSA climate impact is determined in part by particle composition, which has been measured from orbit. The weight percent of sulfuric acid in SSA has been determined from atmospheric infrared transmittance spectra recorded with the Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS) in limb geometry using the Sun as a light source (solar occultation). The global average SSA composition varies from about 50 to 80 percent with lowest values during the Antarctic winter. Atmospheric extinction at a wavelength of 1 μm was included in the analysis to …

An Updated Infrared Solar Spectrum From Ace-Fts And A Ch Rovibrational Line List, Manish Bhusal, Peter F. Bernath, Léo Lavy, Chris D. Boone, Frank Hase

Chemistry & Biochemistry Faculty Publications

An updated Atmospheric Chemistry Experiment Fourier Transform Spectrometer infrared solar spectrum has been produced from low-Earth orbit covering 1829-4440 cm^-¹ (2.252-5.467 mu m). Spectroscopic constants for the v = 4 and v = 5 vibrational levels of the X²Π state of CH radical have been updated by incorporating additional vibration-rotation lines from the new solar spectrum and from an archival laboratory spectrum. New ab initio calculations of the permanent dipole moment function for the X²Π state were performed with the MOLPRO quantum chemistry package using the internally contracted multireference configuration interaction method. This dipole moment function, along with …

Leveraging Funds Of Knowledge And Funds Of Identity: Exploring Equitable Strategies For Diverse Classroom Settings, Evana Nusrat Dooty

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study explores how elementary teachers in the U.S. perceive and incorporate students’ Funds of Knowledge (FoK) and Funds of Identity (FoI) to promote equity in diverse classroom settings. A review of literature highlights the significance of culturally responsive pedagogy, FoK & FoI frameworks, and equity-oriented teaching practices. Semi-structured interviews were conducted to collect participants’ perspectives on leveraging students’ home and community knowledge in instructional planning and classroom interactions. Lesson plans were collected from all participants to get idea about how they could utilize  FoK and FoI approach in their classroom instruction. The findings highlight the need for teacher preparation …

Manipulating Unit Price During Alternative Reinforcement Schedule Thinning In A Concurrent- Schedules Arrangement, Katherine A. Cucinotta

Graduate Theses, Dissertations, and Problem Reports (ETD)

Reinforcement schedule thinning, a critical component when addressing target behavior using differential reinforcement of alternative behavior schedules, aims to decrease alternative reinforcement rates while maintaining suppression of a target response (Davis et al., 2023; Hagopian et al., 2011). When multiple response options are available, manipulating the relative unit price across options alters the relative efficiency with which reinforcement is obtained and can shift responding toward an alternative behavior. Thus, altering the relative unit price can be a beneficial tactic when reinforcement for a target behavior cannot be withheld. Using concurrent-schedule arrangements, two experiments evaluated the conditions under which target response …

Unsuccessful? Universal Human Rights And The United Nations: Russian Imperialism In Ukraine And The Post-Udhr International System, Sofiia Novytska

Graduate Theses, Dissertations, and Problem Reports (ETD)

Human universality has always stood as a controversial subject and remains politically contentious today. Following the humanitarian crisis of World War II, the international community was determined to protect the integrity and dignity of people worldwide by developing the United Nations’ Universal Declaration of Human Rights. However, universal human rights were not invented by the Declaration and were already conceptually established in global ancient thought, further evolved into Early Modern scholarship, and later paved the way for modern humanitarian frameworks. The UDHR was not universally well-received, and was criticized for its revolutionary legal character, postcolonial contestation, and practical ambiguity. The …

Differences In Dry Matter Intake In Grazing And Drylot Beef Cattle, Tylor John Yost

Graduate Theses, Dissertations, and Problem Reports (ETD)

Accurate measurement of individual dry matter intake (DMI) in grazing cattle remains a major challenge for evaluating feed efficiency traits in beef production systems. This study evaluated relationships among intake and efficiency traits measured in both pasture and drylot environments and assessed the potential for predicting pasture DMI using water intake and machine learning approaches. A total of 163 beef cattle across four experimental groups were evaluated in one of two grazing seasons (2024 or 2025). Drylot feed and water intake were measured using automated intake monitoring equipment, whereas pasture intake was determined using a long short-term memory …

Framing Addiction In The Age Of Vaping: A Journalism-Focused Reporting Toolkit, Jessica L. Riley

Graduate Theses, Dissertations, and Problem Reports (ETD)

This project addresses a critical gap in journalism practice: the lack of accessible, evidence-based guidance for reporting on addiction. Particularly as it relates to nicotine, tobacco and vaping. Journalists play a key role in shaping public understanding of substance use, yet existing resources often focus on opioids, lack specificity, or fail to keep pace with rapidly evolving nicotine products and scientific research. As a result, reporters may struggle with inconsistent terminology, unclear risk communication and the potential for unintentionally stigmatizing language.

Grounded in media effects theory, health communication and stigma research, this project examines how journalistic language and framing influence …