Digital Commons Network^™

Measurement Of Wave Elevation Using Piezo-Electric Hydrophone, Ace D. Hobbs

Dissertations, Master's Theses and Master's Reports

Water surface waves exert a pressure oscillation that decreases with depth. Pressure measurements can be used to estimate wave elevation and frequency, which can then be used to (1) implement feedback for wave energy converter control strategies and (2) quantify the potential for converting waterbed pressure fluctuations into electrical energy. This report examines the use of an off-the-shelf piezo-electric hydrophone to estimate wave elevation from pressure data. Experiments were carried out in a wave tank with various wave amplitudes, frequencies, and hydrophone depths. Wave gauges, with a resolution of $\pm 0.5$ mm, measured the wave height above the hydrophone. The …

Changing Snow Hydrology In The Great Lakes And Resilience Through Adaptive Management, Aradea R. Hakim

Dissertations, Master's Theses and Master's Reports

A number of studies have found that global snow cover is generally decreasing, but a closer examination at regional scales shows greater complexity. In the Great Lakes basin, contrasting trends have been identified. While snow cover is generally decreasing basinwide, leeward (downwind) regions have experienced increases in snowfall and snow cover. Changes in snow dynamics are also associated with shifts in runoff timing and volume due to earlier snowmelt and changing precipitation patterns. Streamflow analyses at gauges across the Great Lakes basin indicate trends toward earlier peak runoff and longer runoff periods, although these patterns vary among watersheds and lake …

Application Of Reactive Power Theory To Wave Energy Converters Under Multi-Frequency Excitation: Analysis And Experimentation, Mckenna R. Collins

Dissertations, Master's Theses and Master's Reports

There is abundant energy surging in the oceans across the globe. However, there have been technological challenges in extracting that energy for use. Wave energy converter (WEC) technology is being developed to find innovative ways to convert wave kinetic energy into electricity, but there are still efficiency obstacles that inhibit large-scale use. Focusing on heave-point absorber control theory, this thesis continues the work to improve the efficiency of WECs. This is done by leveraging a superposition of linear mass-spring-damper models to analyze a WEC under multi-frequency excitation and applying proportional-derivative gains to each linear model. However, to analyze this system, …

Open Source Tools For Ecological Research, Alex P. Riebe

Dissertations, Master's Theses and Master's Reports

This thesis presents the development of an open source wireless sensor network for hibernacula manipulation with an emphasis on accessibility and reproducibility. It addresses the design of the electrical hardware, guidance on antennas and RF implementation, and design of an application-specific communication protocol, all with the explicit goal of enabling ecologists and other conservationists to be able to manufacture, deploy, operate, and maintain the system for their research. The resulting sensor network designed in this thesis is to control the temperature inside bat hibernacula during the winter to study the relationship between temperature and bat mortality rate due to White …

Public Perception Of Environmental Contamination And Its Implications For Fish And Community Health In West Bengal, India, Libia Hazra

Dissertations, Master's Theses and Master's Reports

In West Bengal, India, the highest fish-consuming state in the country, fish are woven into everyday life, including ceremonies of birth and marriage, prayers offered during harvesting and the cultural memory of communities whose identities are inseparable from aquatic life. However, the rivers, wetlands, and ponds that sustain these fish-human relationships are increasingly threatened by environmental contamination resulting from industrial discharge, agricultural runoff, and inadequate environmental management. Understanding how communities perceive these environmental changes is essential for developing effective conservation and public health strategies.

In collaboration between the Indian Institute of Technology (ITT) Kharagpur, India, and Michigan Technological University (USA), …

Bayesian Analysis Of Nominal Outcomes With Missing Values Using Multinomial And Multivariate Multinomial Probit Models, Suwash Silwal

Dissertations, Master's Theses and Master's Reports

Nominal outcomes frequently arise in health sciences, transportation, economics, market research, and related fields. These data often contain missing values, while longitudinal and panel studies generate multiple correlated nominal responses. Bayesian estimation of multinomial probit (MNP) and multivariate multinomial probit (MMNP) models provides a flexible framework for analyzing such data but remains computationally challenging due to high-dimensional likelihood integration, restrictive covariance identification constraints, and poor mixing of Markov chain Monte Carlo (MCMC) algorithms, particularly in the presence of missing data. This dissertation develops parameter-expanded data augmentation (PX-DA) methods for MNP and MMNP models with missing nominal outcomes by incorporating parameter …

Beyond Receptive Measures: Development And Validation Of The Spatial Grid Drawing Assessment (Sgda) As A Productive Measure Of Spatial Skill, Katrina L. Carlson

Dissertations, Master's Theses and Master's Reports

Spatial skills are vital in many STEM disciplines, starting at or prior to university training, and often extending throughout one’s career. The most widely used spatial ability measures (e.g., PSVT: R, MRT) rely on what I refer to as receptive skills: examining an object or design, mentally transforming it, and comparing it to given alternatives. But because work in many STEM disciplines also involves productive spatial skill such as drawing, I hypothesize that a productive measure of spatial skill may predict distinct aspects of spatial ability. This research investigates the relationship between traditional receptive Spatial Visualization (SV) assessments, such as …

Coupled Shrinking Core And Bubble Dynamics Model For Enhancement Of Metal-Water Reactions With Acoustic Cavitation, Troy Metz

Dissertations, Master's Theses and Master's Reports

Hydrogen is a valuable fuel. Hydrogen can be produced in several ways including thermochemical cycles, electrolysis, and metal-water reactions. Thermochemical cycles typically use high temperatures, often with corrosive species. Electrolysis requires high purity water. Metal-water reactions do not have these drawbacks. Activators such as lithium and gallium are often used to enhance metal-water reactions. However, these activators add to the complexity of metal-water reactions and may not work for all metals. A novel method to improve metal-water reactions is cavitation. During bubble collapse, shock waves and microjets are produced that can cause surface erosion. The objective of this work is …

Methodology Development For Evaluating Relative Heat Checking Resistance Of Open-Die Forge Tooling, Jack F. Schaller

Dissertations, Master's Theses and Master's Reports

Heat checking, characterized by biaxial networks of surface cracks induced by thermomechanical cycling, can cause premature failure of open-die forge tooling. To facilitate the evaluation of heat checking resistance of die steels, a simulation‑informed out-of-phase thermomechanical fatigue (OP-TMF) testing methodology was developed using 4330V steel as a baseline material. Temperature‑dependent material properties and flow stress data were collected and compiled into a material data file for use with finite element analysis software. Forging and cooling scenarios were simulated across a range of die preheat temperatures. Temperature and in-plane strain histories extracted from the die surface provided a foundation for laboratory …

Valuing Life And Loss: Genre Analysis Of Insurance Claims Processing In Ghana, Cornelius Fuumaale Suom-Kogle

Dissertations, Master's Theses and Master's Reports

This thesis draws on theories from rhetorical genre studies (Spinuzzi’s genre ecology and Freadman’s uptake), biopolitics, and the social justice turn in Technical and Professional Communication to examine how decisions are made in the processing of insurance claims. I adopt a qualitative, interpretive approach to analyze one hundred and twelve (112) claims processing examples from Ghana’s insurance industry. The findings indicate that insurance claims processing is a complex communicative system in which institutional power is enacted, negotiated, and, at times, contested. The findings also reveal that insurer-authored genres frequently enact forms of oppression (exploitation, marginalization, and powerlessness) through technical language …

Slip Kinematics And Structural Analysis Of The Keweenaw Fault System From Lake Linden To Hancock, Michigan, Katherine M. Langfield

Dissertations, Master's Theses and Master's Reports

The Keweenaw fault is a crustal-scale fault spatially associated with Mesoproterozoic rocks of the Midcontinent Rift System. Along the fault, older Portage Lake Volcanics have been thrust southeastward over younger Jacobsville sandstone. Ideas on the fault’s origin, from oldest to most recent, include that it is: (1) a reverse fault, (2) a normal fault formed during midcontinent rifting that was reactivated and inverted to a reverse fault during the Grenville orogeny, and (3) a detached thrust fault system initiated during the Grenville orogeny.

This thesis is based on a U.S. Geological Survey EdMap grant to remap a portion of the …

Real Time Waste Classification Using Deep Learning: Comparing Mobilenetv2 And Resnet 18 With Transfer Learning And Fine Tuning, Abdul Moaiz

ICT

Waste contamination is a major problem all over the world. The Environmental Protection Agency reports that over two thirds of waste found in general household and commercial bins could have been placed in the recycling or organic waste bins instead in Ireland, with food waste and plastics being the most common misplaced items. This project presents a deep learning solution to classify nine categories of waste from camera images in real time with the goal of helping users sort waste correctly at the source. Following the CRISP DM framework, two convolutional neural network architectures were trained and compared, MobilenetV2 and …

Bitcoin Prediction System Usind Machine Learning Techniques, Carolina Azevedo De Castro

ICT

This project investigated the use of machine learning techniques to predict short-term Bitcoin price direction using historical market data obtained from Yahoo Finance. Following the CRISP-DM methodology, the dataset was analysed, prepared, and transformed through feature engineering techniques including moving averages, volatility indicators, return measures and price position metrics. Multiple classification algorithms were evaluated, including Bayesian Classification, K-Nearest Neighbour, Decision Tree, Random Forest, Logistic Regression, Support Vector Machine and XGBoost. Several optimisation strategies were also tested, including feature selection, hyperparameter tuning, feature scaling and class weight balancing. Results showed that predicting short-term Bitcoin price movements remains challenging, with most models …

Predictive Maintenance For Manufacturing Equipment, Paloma De Andrade Batista

ICT

Unplanned equipment downtime is a significant challenge in manufacturing, resulting in substantial productivity losses and operational costs. Predictive maintenance, enabled by machine learning and big data analytics, offers an opportunity to identify potential equipment failures before they occur and improve maintenance efficiency. This report extends a previous capstone project that applied Random Forest and Logistic Regression to the AI4I 2020 Predictive Maintenance Dataset. The current study expands the analysis by incorporating XGBoost, systematic hyperparameter optimisation, cross-validation, and SHAP-based model interpretability. In addition, SWOT and PESTLE analyses, alongside a legal and ethical assessment, examine the broader strategic and responsible implementation of …

Predicting Loneliness Among Older Adults In Ireland Using Supervised Machine Learning, Ariadne Chaves Miranda

ICT

Over the last two decades, technology has grown exponentially and has facilitated communication that helps individuals remain connected. However, this has also contributed to social isolation and lack of physical interaction. One consequence of this phenomenon is loneliness, which is understood as an unpleasant subjective state of discrepancy between the desired amount of companionship or emotional support and what is available in the person’s environment (Prohaska and Burholt, 2020). In the European context, Ireland has emerged as the loneliest country in Europe with 20% of its population that have reported feeling lonely most or all the time (Schnepf et al., …

Southern Adventist University Annual Report 2025-2026, Southern Adventist University

Annual Reports

The Annual Report for Southern Adventist University for 2025 to 2026.

Transforming Lives For Eternity: 2026-2031 Strategic Plan, Southern Adventist University

Strategic Plans

Southern Adventist University's 2026-2031 Strategic Plan.

Assessing The Viability Of Speleothem Float Samples From Mammoth Cave National Park For Reconstruction Of The Laurentide Ice Sheet Position, Jackson Minton

Honors Program Theses

Speleothems are widely used as paleoclimate archives, as they preserve geochemical records of environmental change through groundwater feeding. In regions like Mammoth Cave National Park, these records could be used to determine the position of the Laurentide Ice Sheet based on hydrologic changes. This study uses detached flowstone samples, known as float, from the New Discovery flowstone within Mammoth Cave to assess calcite preservation and the feasibility of accurate age dating to record paleoclimate information. Samples were analyzed using X-ray fluorescence to determine elemental composition and were prepared as petrographic thin sections for microscopic analysis. Petrographic observations revealed a range …

“I Love What I Do, I Just Don't Love Where I Do It,”: An Exploration Of Job-Related Tension And Well-Being Of Professional Academic Advisors, Cynthia Cruger

Theses and Dissertations

This dissertation examines the intersection of job-related tension and workplace well-being among professional academic advisors through the lens of the Job Demands-Resources (JD-R) model. The purpose of the study is to address a gap in advising scholarship by exploring job demands and resources in advisors’ experiences in different advising models and institution types. A scoping literature review addresses advising as a profession, positive organizational psychology frameworks such as the PERMA model, and job-related tension concepts like role overload and ambiguity. Existing research indicates advisors have high job satisfaction despite job tension, and the JD-R theory is used to set a …

Patellofemoral Pain Syndrome: A Case Report In Post-Tibial Orif Patient, Olufemi Akinleye Akintunde, Leah Guzzardo, Kerstin Palombaro

Capstone Showcase

Background and Purpose

Patellofemoral Pain Syndrome is one of the most common causes of anterior knee pain, which can be idiopathic or insidious. Despite this, another cause of patellofemoral pain is a secondary complication from tibial fractures and surgeries. Post-Tibial Open Reduction Internal Fixation: patients undergo a period of knee immobilization, altered weight-bearing status, and quadriceps dysfunction.  This causes quadriceps atrophy, altering the knee's biomechanics. The purpose of this case report is to illustrate the rehabilitation strategy and prognosis of this set of patients.

Case Description

A 44-year-old woman who had a right tibial ORIF developed anterior knee pain one-month …

Systematics Of Disk-Winged Bats (Thyroptera), Courtney L. Klumpp

Capstone Showcase

This thesis investigates the evolutionary relationships among disk-winged bats in the genus Thyroptera, a small group of Neotropical bats known for the adhesive suction disks on their wings and feet that allow them to roost inside tightly rolled leaves. The distinctive morphology and behavior of these bats have not been extensively documented, and their phylogenetic relationships remain only partially resolved. The goal of this research is to better understand how these species are related to one another and to determine whether the five recognized species of Thyroptera form a single monophyletic group. To address this question, morphological and genetic …

Racial Disparities In Maternal Mortality: The Role Of Explicit And Implicit Bias In U.S. Healthcare, Lailah Allen

Capstone Showcase

Maternal mortality in the United States remains a critical public health crisis, with disproportionately high rates among Black and other minority women. Despite advances in obstetric medicine, racial disparities in pregnancy-related deaths persist due to structural inequities, implicit bias in healthcare delivery, unequal access to prenatal and postpartum care, and broader social determinants of health. Nationally, Black women are significantly more likely to experience severe maternal morbidity and mortality compared to White women, reflecting longstanding inequities embedded within the healthcare system. This paper examines the relationship between race, healthcare access, and maternal outcomes through a focused case study of and …

America’S Spectacle: The Business Of Female Beauty In Professional Cheerleading, Marlene Adelman

Capstone Showcase

The National Football League (NFL) is built on values that also represent the deep rooted patriarchal structures within the country it exists in. The NFL is more than a game; it’s a mirror of America’s powerful subjugation of its women. Using one of the most recognizable cheerleading teams, the Dallas Cowboys Cheerleaders, this thesis aims to illustrate how gender is constructed and commodified in professional sports media, which reinforces the male gaze, furthers racial and gender inequalities, and contributes to women’s mental health and body image issues. This paper uses several theories, including male gaze, gender, and intersectionality, along with …

Visual Aids And Numeracy In Healthcare: Leveraging The Drawing Effect, Zephyr J. Markley

Capstone Showcase

Healthcare decisions often require patients to interpret numerical risk information under stress, yet many struggle with low numeracy, which can distort comprehension and undermine informed consent. Well-designed visual aids can improve diagnostic inference, calibrate confidence, and support better choices, especially for patients with limited numeracy, but their impact depends on whether users can actually interpret the format accurately. Drawing may further enhance these tools by adding a tactile, generative layer that engages visual, semantic, and motoric processing while helping patients organize information into concrete models.

Passive visual aids appear useful but limited because they often position patients as observers rather …

Effectiveness Of A Task-Oriented Exercise Program In Managing Idiopathic Scoliosis: A Case Report, Daphne N. Olipas

Capstone Showcase

Abstract

Background and Purpose: Scoliosis is a musculoskeletal condition that commonly affects adolescents characterized by an abnormal multiplanar curvature of the spine. This condition may result in postural imbalance, trunk asymmetry, and limitations in functional activities. Exercise-based interventions are designed to enhance spinal stability, promote postural awareness, improve respiratory function, and support participation in daily activities. This case report aims to evaluate the effectiveness of a structured therapeutic exercise program for a person diagnosed with idiopathic scoliosis. The intervention program includes core stabilization exercises, postural re-education, breathing exercises, and functional training.

Case Description: A 14 year-old female was referred to …

Effect On C5 Myotome Distribution After Cervical Spinal Surgery: A Case Report On Early Neuromuscular Re-Education, Nicole Eder Asebias

Capstone Showcase

Background and Purpose: Postoperative C5 palsy is a known problem after cervical spinal surgery and is characterized by upper extremity weakness that can significantly limit the ability to perform daily tasks. Despite its clinical relevance, limited literature describes physical rehabilitation-focused interventions strategies for this condition. The purpose of this case report is to describe the presentation, physical therapy intervention, and outcomes of a patient with postoperative C5 palsy managed with neuromuscular re-education.

Case Description: The patient is an adult who developed left upper extremity weakness consistent with C5 palsy following cervical spinal surgery. Primary impairments included decreased shoulder abductor and …

Roll The Dice: Do Fostered Youth Stand A Chance In Juvenile Justice?, Marina Rios

Capstone Showcase

Foster youth remain dramatically overrepresented in the juvenile justice system, accounting for up to almost a quarter of system-involved youth despite comprising less than 5% of the general population. Prior research on this subject indicates that foster youth tend to face disproportionately punitive responses, systemic challenges linked to trauma, placement, and instability, as well as limited access to diversion programs. This project aims to examine the disparities that foster youth face that result in juvenile justice involvement, as well as focusing on how structural barriers influence detention rates, sentencing outcomes, and opportunities for rehabilitation. Through an analysis of current literature, …

Kentucky Space Futures: Defining The Driving And Limiting Factors Of Growth In The State Aerospace Industry, Ashley M. Grospitch, Isabella A. Sibold

MPA/MPP/MPFM Capstone Projects

Kentucky’s aerospace industry has quietly become one of the state’s most significant economic drivers, generating almost $19 billion in exports in 2024 and ranking third nationally in aerospace exports in 2023 (Mattingly, 2025; Babbage & Hartsough, 2024). Despite this, Kentucky remains largely invisible as an aerospace state, both to Kentuckians and national audiences. This work was conducted on behalf of our client, Kentucky Space Futures, to identify the factors shaping the growth of Kentucky’s aerospace industry, including its driving and limiting factors, and provide actionable guidance for policymakers and industry leaders.

Using a qualitative research design, this study triangulated findings …

Kentucky Is Working: An Examination Of Higher-Than-Expected Labor Force Participation Rates In Kentucky, Grace E. Coleman, Gabriel M. Kalla, Joseph S. Matthews

MPA/MPP/MPFM Capstone Projects

This client-based capstone examines the drivers of higher-than-expected labor force participation rates across five counties in Kentucky, i.e., Kenton, Pendleton, Owen, Taylor, and Monroe counties. Our client, the Kentucky Chamber of Commerce, requested a qualitative analysis of semi-structured interviews with local stakeholders to identify and contextualize factors contributing to the five counties’ overperformance. Our findings suggest that factors such as collaboration and partnership; education and career pathway initiatives; and community champions all play important roles in supporting strong labor force participation. These insights can be used by other counties seeking to strengthen their local workforce.

Federal Housing Policy Influences And Impacts On Urban Municipalities As Seen In The City Of Paterson, New Jersey, Jennifer L. Beggs

MPA/MPP/MPFM Capstone Projects

This paper examines federal affordable housing policy from the early twentieth century to the present, focusing on the City of Paterson, New Jersey. In presenting an overview of policy and decision-making in Paterson, this paper explores how federal policy has aided urban communities that lacked the opportunities afforded to suburban municipalities through FHA mortgage underwriting and single-family homeownership programs, also considering how New Jersey State housing policy has affected the city. Utilizing a case-study methodology and employing extensive archival research, this project examines how federal housing policy structured differential access to homeownership and rental housing in Paterson, and how these …