Digital Commons Network^™

Arthroscopy And The Future Of Surgery: Personal And Public Health Benefits, Preston T. Koski

Honors Thesis

Arthroscopy focuses on operating on the body using probes and working through keyhole incisions on the skin. This rapidly evolving field has seen many innovations in its technology, aided by advances in optical and surgical capabilities. Moreover, it presents many advantages over traditional surgery that directly impact the patient. Shorter recovery time and lessened scarring, reduced postoperative pain and opioid dependence, and less risk of infection are key benefits over open surgery. These benefits can also be applied to areas of public health. Minimizing the burden on hospital resources, reducing the environmental impact of surgery, and improving cost-effectiveness in healthcare …

Sonochemically Synthesized Zno Nanowires (Nws)-Based Sensor For Non-Invasive Glucose Detection In Sweat, G. M. Mehedi Hossain, Ahmed Hasnain Jalal, Hasina Huq, Nazmul Islam, Karen Lozano, Nezih Pala, Fahmida Alam

Electrical and Computer Engineering Faculty Publications

Glucose is a crucial metabolic marker, providing critical insights into energy regulation and insulin sensitivity, making its monitoring essential for managing diabetes and overall metabolic health. In this context, flexible biosensors have gained considerable attention for their potential to enable real-time and non-invasive glucose monitoring. One promising advancement in this domain is using Zinc-Oxide (ZnO) nanostructures through sonochemical synthesis. ZnO has a wide bandgap of ∼3.37 eV and a large binding energy of 60 meV. This research focuses on ZnO-Nanowires' growth for the first time on a flexible polymer substrate. The average length and diameter of the nanowires are 2.5µm …

Improving Research Software Engineering In Mathematics, Abram Miller

Honors Theses

Research Software Engineering is critical to modern mathematical research, enabling the creation, maintenance, and dissemination of computational tools that bridge theory and practice. However, the field faces systemic challenges, including insufficient funding, lack of institutional recognition, and gaps in training and infrastructure. This thesis investigates these challenges through two approaches: (1) a comparative survey study focused on mathematicians and (2) hands-on contributions to an open-source research software project.

The Improving Research Software Engineering in Mathematics survey, conducted from September 2024 to January 2025, adapts the survey framework developed by Carver et al. in A survey of the state of the …

Reconfigurable Python Autopilot Software For Rc Aircraft, Kate Doiron

Honors Theses

No abstract provided.

Contrastive Representation Learning For Highly Imbalanced Multivariate Time Series With Extreme Instance Strategy, Onur Vural

All Graduate Theses and Dissertations, Fall 2023 to Present

Time series data refers to a sequence of data points collected or recorded at regular time intervals. In many fields including space weather, healthcare, and finance, predicting events from such data is crucial because these predictions can help protect infrastructures, improve healthcare outcomes, and forecast financial trends. However, one challenge in working with time series data is the presence of rare events, which are often underrepresented in the data. This imbalance makes it difficult for traditional prediction methods to provide accurate results, as they tend to focus more on the more frequent events and overlook the rare ones. To tackle …

Investigating Stability Of Cone-Derived Hypersonic Waverider Vehicles Via Design Space Exploration, Adam S. Weaver

All Graduate Theses and Dissertations, Fall 2023 to Present

It may come as no surprise that man-made objects flying at 5, 10, or even 25 the speed of sound (termed hypersonic) are difficult to design, inefficient in flight, and expensive to deploy. Most hypersonic vehicles are effectuated in ballistics, which simplify aerodynamic considerations owing to their fixed trajectory. However, maneuverable hypersonic vehicles can revolutionize commercial flight, national defense, and space travel. One candidate for such missions are waverider vehicles. Waverider vehicles cruise on a cushion of air generated by its own shock wave, essentially enjoying extra lift without any extra drag penalties (which are usually inherent to extra …

“I Can Run At Night!”: Using Augmented Reality To Support Nighttime Guided Running For Low-Vision Runners, Yuki Abe, Keisuke Matsushima, Kotaro Hara, Daisuke Sakamoto, Tetsuo Ono

Research Collection School Of Computing and Information Systems

Dark environment challenges low-vision (LV) individuals to engage in running by following sighted guide—a Caller-style guided running—due to insufficient illumination, because it prevents them from using their residual vision to follow the guide and be aware about their environment. We design, develop, and evaluate RunSight, an augmented reality (AR)-based assistive tool to support LV individuals to run at night. RunSight combines see-through HMD and image processing to enhance one’s visual awareness of the surrounding environment (e.g., potential hazard) and visualize the guide’s position with AR-based visualization. To demonstrate RunSight’s efficacy, we conducted a user study with 8 LV runners. The …

Assessment Of Energy Efficiency Measures Recommended For Industrial Facilities: Environmental, Economic, And Life Cycle Perspectives, Dariush Jafari

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

This study assesses the economic, environmental, and life cycle impacts of more than 800 industrial Energy Efficiency Measures (EEMs) identified in manufacturing facilities across Nebraska. These EEMs are notable for their rapid implementation and minimal disruption to the facility’s building structure or core processes.

The research evaluates the financial viability of EEMs by analyzing utility savings, implementation costs, and payback periods. It also examines their cost-effectiveness in reducing greenhouse gas (GHG) emissions, including calculations of net cost and cost of mitigated CO₂-eq.

Key findings indicate that adding insulation to hot pipes and buildings, replacing personal fans with High-Volume, Low-Speed (HVLS) …

Optimization-Based Distributed Controller For Multi-Agents System In Microgrid Secondary Control, Fahad S. Alshammari, Ayman El-Refaie, Saleh Alyahya, Sheroz Khan

Electrical and Computer Engineering Faculty Research and Publications

Micro-grids function to connect to power system power produced by the renewable energy resources. In islanded micro-grids, grid-forming units collaborate to maintain the micro-grids voltage and frequency by utilizing droop control technique that includes primary, secondary and tertiary levels. Secondary control intervenes to improve power sharing and restore voltage and frequency to their nominal levels. However, the conventional droop control applied to a grid with mismatched line parameters experiences a trade-off between reactive power sharing and voltage regulations. This paper applies real-time trajectory tracking convex optimization to ensure by communicating power sharing between units in a consensus topology. The optimization …

Understanding The Breadth And Impact Of The Ias [President’S Message], Ayman El-Refaie

Electrical and Computer Engineering Faculty Research and Publications

No abstract provided.

Tennessee Magnet Schools: Examining The Relationship Between Magnet School Designation And Student Achievement In Secondary Public Schools, Alex Turner

Electronic Theses and Dissertations

The purpose of this quantitative study was to investigate the relationship between magnet school designation and student achievement in Tennessee secondary public schools. Three years (2021-2023) of student achievement data from the Tennessee Department of Education was used to analyze student performance in 24 magnet and 287 traditional non-magnet schools. Schools were included in the study if they operated continuously throughout the study period and were categorized as either a public magnet school or a traditional non-magnet school. Excluded from the study were virtual, charter, alternative schools, and early colleges.

Four research questions were crafted to guide this study. Student …

The Food Truck: A Multi-Product Newsvendor With Trans-Shipment Cost, Samuel Ajibola

Electronic Theses and Dissertations

The Newsvendor Problem is a key model in supply chain management that focuses on determining the optimal order quantity to minimize costs under uncertain demand. This thesis introduces the Food Truck Problem, an extension of the Newsvendor model that incorporates nonlinear transshipment costs for inventory transportation. In this context, a Food Truck must determine the optimal stock levels for multiple products while minimizing costs related to stock shortages, excess inventory, and transportation. Unlike traditional Newsvendor models, our approach explicitly considers a quadratic transshipment cost, which necessitates the use of Lagrangian duality and Karush-Kuhn-Tucker (KKT) conditions for analysis. Moreover, we apply …

Learning Behaviors In Physics-Informed Deep Learning, Alex Glover

Electronic Theses and Dissertations

Physics-informed deep learning is a methodology in artificial intelligence aimed at combating the large training data requirement and the barrier of domain awareness that deep learning architectures commonly face in applications. Stochastic modeling integrated into the predictive models provides that domain knowledge. Variations of the Intelligent Driving Model impact the learning behaviors of the joint-training architecture. This thesis examines the effect of substituting the standard linear Intelligent Driving Model with a modified nonlinear version, as applied to real human driving behavior on the I-80 interstate. The experimentation also critically evaluates the complications that impede the viability of this architecture in …

Kinetic Analysis Of Hydrolysis And Hydrothermal Conversion Of Methyl Cellulose To Dodecane, Joseph Olembo Were

Electronic Theses and Dissertations

Environmental pollution due to emission of greenhouse gases and increasing global energy demand are some of the concerns associated Analysis with the use of fossil fuels. These concerns have triggered the exploration of sustainable and efficient methods for renewable energy production. One such method is the conversion of cellulosic biomass to hydrocarbon fuels using hydrogen bronze metals. Cellulose is the most abundant biomass globally, and thus its utilization can lead to more sustainable energy production. Previous studies have reported the conversion of cellulose to hydrocarbons at high temperatures and hydrogen pressure. This work focuses on the conversion of methyl cellulose …

A Kinetic Analysis On Hydrolysis And Hydrothermal Conversion Of Cellulose To Dodecane, Joel Nyangoka Onyancha

Electronic Theses and Dissertations

Cellulose, the most abundant biomass on Earth, offers a promising pathway for alternative energy through conversion into alkane hydrocarbons. Traditional methods rely on high temperatures and high-pressure hydrogen, often derived from petroleum. In this study, we investigated the conversion of Microcrystalline Cellulose using hydrogen metal oxides (bronzes) under milder conditions. Following ASTM E3417-24 hydrolysis protocols, we employed hydrogen bronzes with toluene for product extraction. This approach enabled conversion at lower temperatures without pressurized hydrogen. Products were analyzed using Gas Chromatography Mass Spectrometer for identification and Gas Chromatography Flame Ionization Detector for quantification. Our findings revealed the formation of a possible …

A Phenomenological Study On Teachers' Lived Experiences With Digital Learning And Students With Disabilities During And Post-Covid-19 Pandemic, Angie R. Tyson

Doctoral Dissertations and Projects

The purpose of this hermeneutic phenomenological study was to describe the experiences of educators with digital learning and students with disabilities during and post-pandemic in various areas in the Satellite Central Regional Area of eastern Georgia. The central research question of the study, "How do teachers describe their experiences with digital learning and students with disabilities during and post-pandemic?" was addressed by considering Bandura's perspectives on the theoretical framework of self-efficacy. Participants were 11 educators with lived experiences of self-efficacy working with students with disabilities and achievement gaps during and post-pandemic. The participants described their experiences in detail through focus …

A Phenomenological Study Examining The Experiences Of Instructors Who Teach Undergraduate Students With Disabilities, Nakiya Jones

Doctoral Dissertations and Projects

The purpose of this qualitative, phenomenological study was to investigate the experiences of instructors who teach undergraduate students with a documented disability and receive accommodations through the Office of Accessibility and Disability. The theory guiding this study was Noddings’ theory on ethical care as it details how caring is an integral part of the role that both online instructors and those who teach in traditional classrooms play in the lives of their college students. This study sought to understand the effect of caring in the retrieval of accommodations for students with disabilities. This qualitative study utilized questionnaires, interviews, and participant …

A Holistic Case Study On Leaders In The Division Of Enrollment Services’ Experiences Implementing Interdepartmental Partnerships In Higher Education, Christopher A. Almond

Doctoral Dissertations and Projects

The purpose of this holistic case study was to understand the experiences of higher education leaders in the division of enrollment services at a public research university who experienced departmental realignments or mergers because of performance-based funding initiatives. The study addresses the gap in the literature on the effect of change on interpersonal relationships in higher education. The theory guiding the study is Tierney’s theory on organizational behavior among college employees. The research methodology consisted of three phases. I conducted focus groups, individual interviews, and document analyses. The setting was a large research university in an urban city. There were …

Positive And Negative Religious Coping As A Moderator Of The Relationship Between Covid-19 Stressors And Employee Burnout Among Vocational Rehabilitation Counselors, Kristen M. Lewis

Doctoral Dissertations and Projects

During the investigation of this study, no study was located that explores the moderating effects of both positive religious coping (PRC) and negative religious coping (NRC) on the COVID-19 stressor-employee burnout relationship within the vocational rehabilitation counseling (VRCs) profession. Therefore, this study sought out to examine just that. Recruitment emails were sent out to VRCs to obtain 79 participants who were at least 18 years old, have worked at least 6 months as a VRC during the COVID-19 pandemic, and worked an average of 20 hrs/week. Each participant completed a 20-minute online survey containing CIS, PSS, MBI-HSS, Brief RCOPE scales. …

The Burden Of Care: A Phenomenological Inquiry Into The Lived Experiences Of Homeless Shelter Administrators Leading Through The Pandemic And Lasting Implications On Program Operations, Marie Adele Wilson

Doctoral Dissertations and Projects

The theories guiding this study are Maslow's Hierarchy of Needs, conflict theory, and complex systems theory, which explain the relationship between the theory and resource limitations and acquisition, systems, and nature of acquiring human needs. The purpose of this phenomenological study is to describe homeless shelter administrators'/directors' experiences delivering services during the COVID-19 pandemic on the Eastern Coast of the United States and Texas. It further seeks to unravel how the pandemic informed the delivery of services and program administration related to homeless shelters and its impacts. The research questions sought to understand the impact of COVID-19 on delivering services …

Exploring Teachers' Experiences Developing Adaptive Learning Systems With High-Stakes Testing Requirements: A Transcendental Phenomenological Study, Brian J. Le Fevre

Doctoral Dissertations and Projects

The theory that guided this study was Bandura’s self-efficacy theory, which was utilized to relate to teachers’ beliefs about engaging in behaviors influenced by high-stakes testing. A transcendental methodology was used for the study design as the study aimed to explore teachers’ shared experiences while bracketing my previous experiences. The sample population consisted of second- to sixth-grade teachers who instructed subjects who were assessed by high-stakes testing in the Southeastern United States. Data was collected using interviews, focus groups, and journal prompt responses. Following data collection, the data was coded and analyzed to develop the essence of the shared experiences …

The Effects Of Micromanagement Behavior On Employee Turnover Intention In Hybrid And Remote Work Environments, Christopher S. Mendoza

Doctoral Dissertations and Projects

The existing literature extensively documents the prevalence of micromanagement in traditional organizational structures. However, there is a notable gap in research regarding its impact on daily operations within non-traditional work environments, such as hybrid and remote settings. The purpose of this study was to examine the relationship between micromanagement and turnover intention in these evolving workplace models. A sample of 25 participants who had experienced micromanagement in hybrid and remote work environments was selected for this study, with no additional selection criteria imposed. Findings indicated that 24 participants experienced declines in morale, directly contributing to increased turnover intention. Furthermore, financial …

High School Students’ Sense Of Belonging In Math, Marie Louise Stevenson

Electronic Theses, Projects, and Dissertations

A student’s sense of belonging in math describes the extent to which a student feels that they are a member of their math community. It is important to study math sense of belonging because it is believed that when a student feels that they are a valued and respected part of their math community, they are more likely to exhibit higher participation and performance in their math class and take more math courses in high school and college. They also have an increased chance of pursuing a STEM career. In this study, we investigated the math sense of belonging of …

Evaluating Trauma-Informed Care In Higher Education For Hispanics, Latino/A/X/E, And Afro-Latinos Impacted By Adverse Childhood Experiences, Daylene A. Medina, Lilian Grijalva

Electronic Theses, Projects, and Dissertations

Background: Henshaw (2022) discusses the importance of trauma-informed approaches in higher education institutes by implementing culturally responsive policy, research, and practice to support students impacted by trauma. However, less is known about how effective trauma-informed care is and its impact on the educational outcomes of racial and ethnic minority students, specifically Hispanics, Latino/a/x/e, and Afro-Latinos students in community colleges. Past studies have excluded Hispanics, Latino/a/x/e, and Afro-Latinos from research due to insignificant participation and risk re-traumatization. Objective: This evaluative study aims to determine effectiveness of trauma-informed care for adult (18 and older) Moreno Valley College students in their last academic …

Engineering An In Vitro Hipsc-Derived Cardiac Tissue Construct For Regenerative Medicine Applications, Larry Mendoza

Electronic Theses, Projects, and Dissertations

Cardiovascular disease is the leading cause of mortality across the world with invasive surgeries and pharmaceutical intervention commonly associated with urgent care. Moreover, congenital, progressive, and hereditary heart diseases rely on many forms of medical prevention and intervention (pharmaceuticals, x-rays, bloodwork, etc.). Developing a three-dimensional (3D) cardiac tissue engineered in vitro model to study human cardiac physiology can revolutionize biomedical research. The purpose of this research is to optimize natural & synthetic biomaterials to fuse cardiac stem cells and synthesize a 3D-printed in vitro model for disease modeling, drug delivery, and regenerative medicine. Natural biopolymers needed for such innovations are …

Numalyze: Numerical Analysis Web Application, Dev Kapupara

Electronic Theses, Projects, and Dissertations

Numalyze is an online platform that allows users to run and apply different numerical methods in real time. The application is built using Python and the Flask web framework. It provides an interface where users input mathematical functions and parameters to see the results for root-finding and integration methods, and to also perform reductions on matrices. By using a light-weight web framework and self-coded algorithms which removes dependency on massive external libraries—this application connects theoretical concepts to their practical implementation. It enables students and researchers to visualize the series of steps that each algorithm takes to compute results. Moreover, the …

Exploring The Factors That Influence Telehealth Usage Among Immigrants In The United States: A Mixed Methods Study, Jose M. Garcia-Castañeda

Electronic Theses, Projects, and Dissertations

Background: Immigrants in the United States continue to face barriers in accessing healthcare services which are rooted in systemic inequities, cultural disconnects, and language-related challenges. The growing presence of telehealth services has offered new opportunities to expand access, but it has also highlighted new barriers which are language proficiency and digital literacy which could increase the gap in services for already marginalized populations. These barriers are factors that influence outcomes such as delayed care, reduced preventative care, and overall poorer health outcomes. The Andersen Behavioral Model of Health Service Use (Andersen, 1995) provides a useful framework in understanding how predisposing, …

Effectiveness Of Mental Health Interventions Amongst Parents With Child Welfare Involvement, Clarisa Grano

Electronic Theses, Projects, and Dissertations

This study explores the effectiveness of mental health interventions provided by child welfare agencies to parents involved in the child welfare system. By employing a mixed-methods approach, the research aims to assess intervention outcomes, identify barriers to service utilization, and provide qualitative insights into parents' experiences with mental health services. The quantitative component will gather data on mental health outcomes through structured surveys, while the qualitative component will explore the lived experiences of parents through semi-structured interviews. Findings from this study will contribute to the development of culturally competent interventions and inform policy changes that address systemic inequities in mental …

Time Series Deep Learning Approach For The Intermittent Operational Performance Of A Wellhead Water Treatment And Desalination System, Michael G. Clement

Electronic Theses, Projects, and Dissertations

Distributed water treatment and desalination (DWTD) systems are becoming significant for serving disadvantaged communities that are geographically segregated from centralized water distribution networks. However, given the remote nature of the communities, these systems must operate autonomously adapting to intermittent operations due to varying water use patterns and unavailability of continuous manual labor support. Machine Learning models describing and forecasting system performance are critical, allowing for model-based control, performance forecasting, fault detection, and determination of causal relationships among process attributes. Accordingly, graph convolutional neural networks with an attention mechanism (GATConv) were developed to describe the intermittent operational profiles of a wellhead …

The Hodgepodge Creation: Amalgamated Adaptation In Video Games, Tom Chen, Tom Chen

Electronic Theses, Projects, and Dissertations

Amalgamated adaptation is a concept that involves blending multiple sources into a hodgepodge creation. This practice has become commonplace among game creators in recent years, yet it is neither readily covered nor explicitly mentioned in current video game scholarship. My previous research highlights the profound application of amalgamated adaptation to older texts, particularly myths and sacred texts from various cultures or communities. This method grants creators the autonomy to reinvent these texts in bold and extreme ways, achieved by melding borrowed ideas that complement and, at times, synergize with one another. I argue that single-source adaptations of myths, when reshaped …