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Elevated Sulfate Concentrations In Groundwaters Of Glaciated Terrains—Natural Or Anthropogenic?, Christabel Obi, Eric W. Peterson

Faculty Publications - Geography, Geology, and the Environment

Increasing sulfate (SO₄²⁻) concentrations in groundwater systems are a growing environmental concern due to their implications for drinking-water quality and biogeochemical cycling. While sulfate is commonly of geogenic origin, its behavior in agriculturally influenced glacial aquifers remains poorly constrained. This study investigates the distribution, depth dependence, and seasonal variability of sulfate concentrations in groundwater within a riparian system comprised of sediments deposited by glaciers in central Illinois, USA. The study specifically evaluates whether sulfate concentrations 1) vary with groundwater depth, 2) exhibit seasonal trends, and 3) reflect contributions from agricultural tile drainage waters. Groundwater samples collected from …

A Quantitative Analysis Of Barriers To College Students’ Seasonal Vaccination Intentions And Behaviors, Kelly S. Clemens, John Matkovic

Faculty Publications – Health Sciences

Objective
Vaccination is crucial to college student health, but quantitative analyses of barriers in this population are limited. The present study expands the work of Su and Chen to determine the relative influence of structural, psychological, and social vaccination barriers.

Participants
Participants were 650 students from a large, midwestern university during the 2024 vaccination season.

Methods
Participants were recruited from a college campus and randomized to respond to items assessing their barriers to, intentions to receive, and uptake of the COVID-19 or influenza vaccination.

Results
Structural, psychological, and social barriers were differentially important to vaccinations and to intentions vs. uptake …

Exponentially Many Correspondence Colourings Of Planar And Locally Planar Graphs, Luke Postle, Evelyne Smith-Roberge

Faculty Publications – Mathematics

We show that there exists a constant c>0 such that if G is a planar graph with a 5-correspondence assignment (L,M), then G has at least 2c⋅v(G) distinct (L,M)-colourings. This confirms a conjecture of Langhede and Thomassen. More broadly, we introduce a general method showing how hyperbolicity theorems for certain families of critical graphs can be used to derive lower bounds on the number of colourings of the associated class of planar graphs. Hence our main result follows from this method plus a technical theorem (that we proved in a previous paper) involving the hyperbolicity …

Shades Of Stress: Colorism As Minority Stress For Women Of Color, Caitlin M. Mercier, Brea M. Banks, Lourdes D. Concepción Cabán, Michelle Duong

Faculty Publications – Psychology

Women of color often endure indignities shaped by colorism and skin tone discrimination, pressuring them to adhere to racialized beauty ideals (i.e., lighter skin). In response, some women of color may internalize these standards (i.e., through internalized coping and racial self-hatred) which can foster psychological distress. Yet, these associations remain underexplored. Using minority stress theory, in our cross-sectional study we collected online survey data to examine whether internalization and racial self-hatred explained the indirect link between colorist microaggressions and psychological distress among 121 women of color at a Midwestern US historically white institution. Using path analysis, we found support for …

2024 Annual Operations And Maintenance Report 2024 Bres Annual Summary Report For Work Completed In Quadrant 4, Butte-Silver Bow Department Of Reclamation And Environmental Services

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Impact Of Tactical Breathing On Marksmanship And Cognitive Function After Anaerobic Fatigue In Law Enforcement Personnel, Jackson D. Gilleland

College of Graduate Studies: Theses & Dissertations

Background: Tactical breathing is commonly used in law enforcement training to regulate stress, yet limited evidence exists regarding its acute effectiveness following physical fatigue. Purpose: To examine whether a brief tactical breathing intervention improves shooting performance and heart rate variability (HRV) following anaerobic fatigue in law enforcement officers. Methods: Thirty-eight officers completed baseline HR/HRV and a shoot/no-shoot scenario, followed by a maximal 500-m row and post-fatigue shooting. Participants were assigned to either a control group or a tactical breathing group, which received brief instruction and coaching before post-testing. Results: No significant between-group differences were observed for A-zone accuracy, shot time, …

Ai-Driven Penetration Testing For Arm Systems: A Comprehensive Framework With Experimental Validation, Matthew Ragsdale

College of Graduate Studies: Theses & Dissertations

The convergence of artificial intelligence and cybersecurity presents new opportunities for automated penetration testing capable of discovering, prioritizing, and remediating vulnerabilities at machine speed. However, deployment on resource-constrained ARM platforms remains unexplored despite ARM’s dominance in mobile, IoT, and edge computing with over 280 billion chips deployed globally. This thesis presents systematic experimental evaluation of AI-driven penetration testing across four paradigms—traditional machine learning, deep learning, large language models, and reinforcement learning—on three ARM platform tiers: Raspberry Pi 5 (8GB, Cortex-A76), Radxa ROCK 5B Plus (16GB LPDDR5 with NPU), and NVIDIA Jetson Nano (4GB with Maxwell GPU). The experimental framework generates …

Network-Aware Airline-Specific Flight Delay Prediction Using Tree-Based Ensemble Models, Mary Dufie Afrane

College of Graduate Studies: Theses & Dissertations

Flight delays pose persistent challenges to the efficiency and reliability of air transportation systems, affecting airlines, airports, regulators, and passengers alike. As traffic demand grows and operational environments become increasingly interconnected, accurately predicting both departure and arrival delays has become crucial for effective planning and mitigation. This study presents a network-aware, airline-specific framework for predicting flight delays in U.S. domestic air transportation systems using tree-based ensemble machine learning models. A large-scale dataset of 1.98 million flights, enriched with weather information, is used to develop predictive models for both departure and arrival delays. To capture the structural and operational complexity of …

Comparison Of 2000-Meter Row Prediction To Measured Vo2peak During Gxt, Andrew S. Ashley

College of Graduate Studies: Theses & Dissertations

BACKGROUND: Aerobic capacity is essential for the performance of military personnel and first responders. Traditionally, graded exercise tests (GXTs) with metabolic gas analysis have been the criterion-referenced method for assessing aerobic fitness. However, treadmill running and cycle ergometers may not fully reflect the whole-body demands required in tactical environments. Rowing-based assessments and the currently commercially available VO2max prediction formula are widely used across tactical organizations as practical field measures, and most tactical operators are considered inexperienced rowers, which has been minimally examined. PURPOSE: The purpose of this study is to compare measured VO2peak from a rowing GXT with estimated VO2max …

Pixel-To-World Mapping For Multi-Camera Warehouse Robot Localization, Mariam Faruque Sharif

College of Graduate Studies: Theses & Dissertations

This thesis presents a comprehensive framework for camera calibration and pixel-to-world coordinate mapping for multi-camera robot localization in a structured warehouse environment. The study is conducted in the APRN-ROWS laboratory, where four overhead cameras observe a planar grid of known barcode locations used as the reference coordinate system.

The proposed approach combines geometric modeling and optimization-based techniques to estimate camera parameters. Initially, camera extrinsic parameters, including position and orientation, are derived using physical measurements and geometric relationships. Principal point locations are estimated through a zoom-based alignment method, ensuring accurate correspondence between the optical axis and the world coordinate system. Intrinsic …

Holding Space For Teachers: A Phenomenological Exploration Of Social-Emotional Competence And School Climate In Title I Schools, Zsa Zsa B. Davis

College of Graduate Studies: Theses & Dissertations

Teacher retention remains a critical concern in education, particularly within Title I schools, where educators face elevated stress levels, emotional exhaustion, and burnout due to the complex needs of students and limited institutional resources. Addressing teachers’ social-emotional competence (SEC) can mitigate the adverse effects of stress by enhancing emotional regulation, well-being, and relational trust which in turn promote job satisfaction and professional fulfillment. Likewise, a positive school climate plays a crucial role in sustaining teachers’ long-term commitment to the profession. This qualitative study employed a descriptive phenomenological design to explore the lived experiences of Title I elementary teachers as they …

Enhancing Military Health System Organizational Efficiency And Quality Of Care Through A Social-Ecological Framework, Eric L. Peipelman

College of Graduate Studies: Theses & Dissertations

Timely and fair adjudication of incivility-related actions within the Department of Defense (DoD) and Military Health System (MHS) is increasingly crucial for maintaining accountability, mission readiness, and quality of care. Ongoing delays in resolving workplace complaints and inefficiencies in resource-heavy adjudications highlight the need to shift from reactive complaint handling toward proactive civility promotion and transparent decision-making. This Integrated Learning Experience (ILE) introduces the Peipelman Civility Discussion and Assessment Toolkit (PCDAT)—a comprehensive, evidence-based framework designed to improve civility, optimize resources, and enhance communication, even in the MHS. Based on the Social-Ecological Model (SEM) and adapted from the Workplace Power and …

Community Care During Austerity: Mutual Aid And Online Connection Among Disabled Americans, Maeve J. King

College of Graduate Studies: Theses & Dissertations

Amidst a mental health epidemic and rising inequality, online communities offer a medium for peer support networks for disabled Americans. Community care, especially in the form of mutual aid, has increased in popularity since the beginning of the COVID-19 pandemic. Considering troubling increases in eugenics-based messaging and disproportionate economic inequality, disabled Americans in particular have leaned into community care. Previous research establishes social media as a hub for resource mobilization and safe space for members of marginalized communities to connect. This research aims to explore the impacts of social, political, and economic unrest on the development of community care and …

Exploring Psychological Safety And Workforce Experiences Among Employees In Recovery Community Organizations In The Southern United States: A Qualitative Study, Claire-Lorentz Ugo-Ike

College of Graduate Studies: Theses & Dissertations

This qualitative study explored how employees in Recovery Community Organizations (RCOs) in the Southern United States experience psychological safety and how these experiences shape employee well-being and their intentions to stay or leave their organizations. Guided by Edmondson’s Psychological Safety Theory and the Job Demands-Resources (JD-R) model, the study examined how leadership practices, workplace culture, and the emotional demands of recovery support work shape employees’ perception of safety, support, and sustainability in the workforce. Semi-structured interviews were conducted with 19 RCO employees working in various peer support roles. Thematic analysis identified five major themes: (1) leadership behaviors shape psychological safety …

Trends Among Suspected Opioid Overdose Emergency Medical Service (Ems) Incidents In Georgia From 2019-2023, Ashton Harris

College of Graduate Studies: Theses & Dissertations

Opioid overdoses remain a problem in the United States, underscoring the need for additional surveillance tools to monitor trends in opioid overdoses. Emergency Medical Services (EMS) data is a timely surveillance method that captures more potential overdoses than hospitals by representing the pre-hospital setting. Research questions in the study assess EMS responses to suspect opioid overdose incidents from 2019-2023 in Georgia to encompass the following characteristics: timeframe (pre, during, post-pandemic), urban versus rural counties, race/ethnicity, categorical type of first responder, mean dosage of naloxone in milligrams administered, and death. 84,359 records meeting the inclusion criteria were initially retrieved from the …

Roadway Runoff Impacts To Trout Streams Studies For Ms4 Permit, Jobayed Hossain Badhan

College of Graduate Studies: Theses & Dissertations

Roadway runoff from Georgia Department of Transportation (GDOT) highway infrastructure poses measurable, but temporally constrained threats to cold-water trout ecosystems in northern Georgia. This study investigates temperature and dissolved oxygen (DO) dynamics in three secondary trout streams receiving GDOT roadway discharges, with the primary objective of evaluating compliance with Georgia Rule 391-3-6-.03(6)(ii),(v) under the Municipal Separate Storm Sewer System (MS4) permit framework. Field monitoring was conducted from April 2024 through October 2025 across two consecutive summer seasons using a tiered, multi-instrument approach: YSI ProDSS handheld grab sampling provided regulatory-grade reference measurements; HOBO MX-801 optical DO dataloggers recorded continuous 5-minute-interval temperature …

Effects Of Composition, Nodularity, Pouring Temperature, Inoculation, And Mold Strength On Wall-Movement In Sgi Castings During Solidification And Cooling, Noah Brack

College of Graduate Studies: Theses & Dissertations

The iron-carbon casting alloy known as spheroidal graphite iron (SGI), nodular graphite iron, or ductile iron (DI) experiences complex volume changes during its solidification and cooling as graphite nodules and austenite form. These volume changes result in forces on the mold cavity walls and can deform the mold walls in cases when mold walls lack the strength to resist the deformation. This wall movement can cause the formation of casting defects such as swell, warped part geometry, and shrinkage porosity. Though this phenomenon has been studied in the past, it remains difficult to predict casting wall movement with existing data. …

Fur-Ever In Memory: College Student Grief And Coping After Pet Loss, Rohit Paruchuri

College of Graduate Studies: Theses & Dissertations

Pet loss is a significant yet often overlooked form of bereavement, particularly among college students who are navigating emerging adulthood. Pets play an important role serving as a source of emotional support and are often viewed as family members; however, grief following pet loss is a type of disenfranchised grief, meaning it is not accepted by the society as something significant and often overlooked when compared to grief following human loss (Spain et al., 2019). Research suggests that grief following pet loss can mirror responses to human loss including sadness, guilt, loneliness, and disruption of daily routines (Eckerd et al., …

Effects Of A Context-Based Intervention On Sidelining Teacher Bias Toward Students With Attention-Deficit/Hyperactivity Disorder, Marisa Kortright

College of Graduate Studies: Theses & Dissertations

Students with Attention-Deficit/Hyperactivity Disorder (ADHD) often display behaviors such as inattention, impulsivity, and hyperactivity that may be perceived as disruptive in classroom settings. These behaviors can influence teachers’ responses and disciplinary decisions, which may be shaped by stereotypes or biases associated with ADHD diagnoses. This study examined whether a context-based intervention could reduce bias in teachers’ disciplinary decisions. Participants were 112 current or former elementary school teachers living in the United States who were recruited through the online recruitment platform Cloud Research. Using an experimental design, participants were randomly assigned to a neutral or empathetic intervention condition and evaluated student …

Investigation Of Dirac‑Like Cones Induced Topologically Protected Wave Propagation (Tpwp) In Solid-Fluid Acoustic Metamaterials: A Combined Numerical And Experimental Study, Humza Khan

College of Graduate Studies: Theses & Dissertations

Topologically protected wave propagation (TPWP) is a unique phenomenon in acoustic metamaterial, where tailored geometries and material properties enable controlled energy absorption and localizations. This study investigates TPWP through the systematic variation of unit cell geometry to capture multiple Dirac-like cone interactions within the Brillouin zone. While prior research had emphasized solid-solid interactions, the present work extends the framework by incorporating a solid-fluid configuration.

The primary objective of this study is to determine the influence of unit cell volume and material selection on  the formation of Dirac-like cones in the Brillouin zone, as well as on the corresponding bandgap characteristics. …

Mirroring Memory: Material, Reflection, And Becoming, Nila Mojaveri

College of Graduate Studies: Theses & Dissertations

ABSTRACT

This thesis explores how memory shapes identity through material, reflection, and tactile processes. Drawing from my personal experience of migration from Iran and the emotional distance from home, the work examines memory as a shifting, layered, and embodied phenomenon rather than a fixed narrative. Through the use of mirror, clay, fabric, and paint, I investigate how materials can hold, reflect, and transform lived experience. Each material carries specific meaning: mirrors introduce fragmentation and reflection, clay records touch and grounding, fabric evokes softness and domestic memory, and paint creates atmosphere through layering and tone. Together, these materials form a visual …

Food Access Disparities In Fulton County, Georgia: Examining Structural Barriers And Community-Level Determinants, Paige J. Perry

College of Graduate Studies: Theses & Dissertations

Food insecurity remains a significant public health issue affecting communities at global, national, and local levels, including Atlanta, GA. Despite being an affluent and rapidly growing urban area, disparities in food access persist across Fulton County. This study examines the structural, demographic, and socioeconomic factors associated with food access at the census tract level. Using quantitative analysis, the study evaluates how geographic location, population characteristics, transportation access, and economic conditions influence the likelihood of low food access. Findings highlight significant disparities linked to transportation availability, demographic composition, and geographic variation within the county. These results underscore the importance of addressing …

Body Image Perception In African American Women, Ages 20-55 Years, Trina Suttles

College of Graduate Studies: Theses & Dissertations

This qualitative study explored the factors that influence body image perception among African American women in the metropolitan Atlanta, Georgia area and examined how these perceptions shape physical activity and dietary behaviors. Body image perception is a critical psychocultural factor influencing obesity-related behaviors, particularly among African American women who navigate culturally specific beauty standards and health beliefs. Guided by the Socioecological Model, this study addressed three research questions: (1) how African American women perceive their body image, (2) how these perceptions influence health behaviors, and (3) what multilevel factors shape body image perceptions. This study employed consensual qualitative research (CQR) …

"Spectrum", Mackinzey H. Critzer

College of Graduate Studies: Theses & Dissertations

These body of works explores themes centered around ASD/Autism Spectrum Disorder, including symptoms involved, my personal views/experiences of it, social issues, and other related topics. My work consists of various mediums, digital pieces/prints and physical installations that involve bright color tones, human/humanoid figures, and various symbols.

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 …

Sociodemographic Differences In Sepsis-Related Medicare Hospitalizations: A State-Level Analysis Of Diagnosis-Related Groups For Severe Sepsis In 2019 And 2022, Alba Kuqi

College of Graduate Studies: Theses & Dissertations

Introduction: This state-level ecological repeated cross-sectional study examined sociodemographic differences in sepsis-related Medicare hospitalizations assigned to Medicare Severity Diagnosis-Related Groups (MS-DRGs) 871 and 872 in 2019 and 2022.

Objective: The study focused on three outcomes: changes in sepsis-related Medicare discharge volume, changes in average Medicare payment per sepsis discharge, and changes in the proportion of MS-DRG 871 discharges relative to MS-DRG 872 discharges.

Methods: Publicly available Medicare inpatient hospital data and state-level demographic data were used to evaluate whether age, race, gender composition, and median household income were associated with these changes across the 50 U.S. states and …

Cytonuclear Incompatibilities In Hybrid Systems: Oxidative Phosphorylation Capacity And Nuclear Marker Transmission Ratio Distortion In Hybrids Of An Introgressed Strain Of Parasitoid Wasp, Julie Kessler

College of Graduate Studies: Theses & Dissertations

Speciation is an evolutionary process resulting in the divergence of populations into reproductively isolated species, a key concept that supplies our planet with an abundance of biodiversity. Mechanisms for speciation center on obstacles to fertilization and include post-zygotic barriers, such as intrinsic deleterious interactions, that arise in hybrid systems where genetic variants are combined. Genes from separate parent lineages are often incompatible due to the co-evolution of paired genes within a singular species not matching their complement genes in another species, and the result is a reduction in fitness of the hybrid when these genes come together. The mitochondrial OXPHOS …

Validity Of The Polar Verity Sense Optical Armband And Iphone Accelerometer For Heart Rate Variability Assessment, Chinelo C. Chukwuma

College of Graduate Studies: Theses & Dissertations

The purpose of this study was to test the validity of the Polar Verity Sense optical armband and iPhone accelerometer (Kubois seismocardiography, SCG) against the Polar H10 across different body positions (for both devices) and measurement durations (for Verity Sense only) while accounting for skin pigmentation. Healthy young adults (n = 46) participated in simultaneous recordings in the supine, seated, and standing positions using the Kubios mobile application on separate devices. Verity Sense measurements were collected for both 1‑ and 5‑min durations, whereas accelerometer measures were 1 min. Skin pigmentation was quantified with the melanin index (M-index). For resting heart …

Faculty Handbook, Georgia Southern University

Faculty Handbooks

Faculty Handbook for Georgia Southern University for the 2025-2026 academic year. The Faculty Handbook is published online by the Office of the Vice President for Academic Affairs and archived in Digital Commons@Georgia Southern.

2025-2026 Georgia Southern University Women's Swimming And Diving Roster, Georgia Southern University

Women's Swimming Records

No abstract provided.