Novel Design And Fabrication Of A High-Speed Transient Heat Flux Sensor For Application To Rotating Detonation Engines, Zachary Todd Tallman

Graduate Theses, Dissertations, and Problem Reports (ETD)

Rotating detonation engine (RDE) combustion systems have been a topic of interest in the pressure gain combustion community for their benefits over traditional gas turbine engine combustors. However, cooling requirements for these engines are significantly higher and less predictable than those of non-detonating engines. To understand and quantify the high-speed heat transfer dynamics within an RDE, a novel high-frequency heat flux sensor is presented. This study aims to design a robust, single-sided sensor that can withstand the high temperature and harsh environment of an RDE for extended durations. Screen printing is used to deposit a layered, platinum-yttria-stabilized zirconia (YSZ) film …

Imitation Learning In Robotic Manipulation Using Diffusion Models, Marlon Domingues De Oliveira

Graduate Theses, Dissertations, and Problem Reports (ETD)

This work deals with the problem of teaching robots by demonstration, also known by imitation learning. The main objective of this area of research is to enable the autonomous execution of complex robotic tasks using neural networks trained on expert-generated data, thus allowing the transfer of human knowledge to machines. To this end, this thesis describes an experimental setup especially designed for the study of imitation learning in robotic manipulation tasks and the adaptation and evaluation of a previously published technique to this setup. The experimental setup developed in this work is based on the Franka Emika Research 3 manipulator, …

In-Plane Shear Stiffness Of Stay-In-Place Forms And Bracing Effects On The Torsional Stability Of Press-Brake-Formed Tub Girders, Ethan L. Host

Graduate Theses, Dissertations, and Problem Reports (ETD)

Press-brake-formed tub girders have welded internal angle bracing that is believed to be necessary for torsional stability under eccentric loading. However, this bracing creates fatigue weld hotspots overtime, which are subject to cracking. This study was performed to assess the torsional behavior of the Valmont U12 press-brake-formed tub girder (PBFTG) under various configurations using finite element analysis (FEA) modeling and experimental laboratory testing. The primary objective was to (1) determine the necessity of various angle bracing throughout the beam, and the effects removing said braces has on the torsional stiffness of the girder and (2) investigate the use of stay-in-place …

Evolving Secure Authentication From 5g To 6g: Advancing Privacy And Resilience In Next-Generation Networks, Isabella Deanne Lutz

Graduate Theses, Dissertations, and Problem Reports (ETD)

The fifth generation (5G) of mobile networks introduced groundbreaking improvements in connectivity, latency, and reliability. As 5G continues to expand across commercial and de- fense sectors, ensuring the privacy and integrity of its authentication mechanisms remains paramount. The foundation of 5G security lies in the Authentication and Key Agreement (AKA) protocol, which enhances user identity protection and establishes mutual authenti- cation between the user equipment (UE) and the network. Despite these advances, several weaknesses persist, including replay-based desynchronization, linkability, and correlation at- tacks under realistic adversary models. This thesis provides a unified analysis of these vulnerabilities and introduces a lightweight …

This Is A War: The 1977-78 Coal Strike And The Fracturing Of The Postwar Social Compact, Christian B. Rowe

Graduate Theses, Dissertations, and Problem Reports (ETD)

The 1977–78 coal strike was a landmark moment for the American labor movement. Despite holding out for 110 days with no pay or benefits through a historically severe winter, miners were unable to advance their demands and achieve a progressive contract. By invoking the Taft–Hartley Act to end the strike, Jimmy Carter destabilized the New Deal political coalition by enraging one of its core constituencies and placing the needs of the state over the needs of unionized industrial workers. The BCOA’s immovable position in negotiations was an early sign that the labor-management accord that had governed industrial relations since World …

Characterizing Nursery Habitat For Juvenile Invasive Carp (Hypophthalmichthys Spp.) On The Ohio River, Rebecca Hiller

Graduate Theses, Dissertations, and Problem Reports (ETD)

Since their introduction to US waters, Silver Carp (Hypophthalmichthys molitrix) and Bighead Carp (H. nobilis) have rapidly spread throughout the Mississippi River basin and its major tributaries, but their invasion has stalled within the Ohio River. Recent research has suggested this slowed spread could be due to a lack of suitable nursery habitat in the Ohio River, affecting recruitment of invasive carp. This study aims to characterize the habitats juvenile carp are utilizing by investigating three main lines of inquiry: that juvenile carp habitat use is limited by (1) the flow regime of the Ohio River …

Trauma-Informed Yoga As An Adjunct To Treatment As Usual Within Inpatient Substance Use Disorder Treatment: A Feasibility Trial., Suzanne Vogler

Graduate Theses, Dissertations, and Problem Reports (ETD)

Yoga interventions have been used more frequently in recent years within health and wellness settings to address both clinical and non-clinical issues. More specifically, yoga interventions and trauma-informed yoga (TIY) interventions are being explored within the treatment of substance use disorders (SUD). Initial research suggests that yoga interventions could be beneficial to the treatment of SUDs as an adjunct to treatment or a stand-alone intervention as part of continued recovery (post-clinical treatment) (Fitzgerald et al., 2021; Mallik et al., 2019). Although initial research is promising, the current quantity and quality of studies specifically exploring the feasibility and potential benefit of …

Modeling Relativistic Fluids In Dynamical Spacetimes, Terrence Alphonse Pierre Jacques

Graduate Theses, Dissertations, and Problem Reports (ETD)

Multi-messenger astrophysics opens a new era in our understanding of the most dynamic and energetic systems in the Universe. Correlating gravitational-wave and electromagnetic signals in space and time enables stringent tests of models for core-collapse supernovae, merging supermassive black-hole binaries with accretion disks and jets, and mergers of compact object binaries such as binary neutron stars (BNS) and white dwarfs. Comparisons between models and multi-messenger observations may be used to constrain the neutron-star equation of state (EOS), formation channels for compact-object binaries, and emission mechanisms behind short gamma-ray bursts.

In modeling such astrophysical systems, great success has been achieved by …

Youth Sport Organizational Leaders’ Perceived Strengths And Challenges Working With Volunteer Coaches: A Case Study, Hannah Swartz

Graduate Theses, Dissertations, and Problem Reports (ETD)

Youth sport organizations in the United States rely heavily on volunteer coaches to deliver accessible and developmentally aligned programming, yet little research has examined how organizational leaders perceive and manage this volunteer workforce. Existing scholarship has focused primarily on volunteer coach motivations and experiences from the coach perspective, leaving a gap in understanding the views of those responsible for recruiting, training, retaining, and supporting volunteers. Guided by the youth sport social-ecological model (NYSS, 2019), the recent USOPC Commission Report, and principles of self-determination theory (Ryan. & Deci, 2000), this instrumental case study explored youth sport organizational leaders’ perceptions of working …

Motivation And Well-Being: A Study Of Wvu Extension Volunteers, Amber Renae Goff

Graduate Theses, Dissertations, and Problem Reports (ETD)

Volunteers are the heart of the land-grant outreach model. They bring education and resources to communities across West Virginia. Volunteers have been relied upon in many aspects of Extension programming and current budget conditions have reduced the level of staffing within WVU Extension. There may be an increased demand for volunteers to help with programming. The purpose of this study was to investigate the relationship between motivation and the perceived level of well-being within the WVU Extension volunteer programs. The study yielded 464 responses from a descriptive survey. Based on the results, WVU Extension volunteers are motivated based on their …

Novel Phenomena In Chiral And Disordered Crystals, Zachary Louis Romestan

Graduate Theses, Dissertations, and Problem Reports (ETD)

The concept of symmetry is central to our understanding of the physical world. Core symmetries—comprising time reversal, charge conjugation, spatial inversion, and rotation—are integral in maintaining essential conservation laws. They also play a critical role in the manifestation of new quantum phases that arise when these symmetries are disrupted. At the heart of contemporary research in condensed matter physics is the exploration of how basic symmetries interact with material imperfections. This examination delves deeply into the ways that inherent symmetrical properties and structural anomalies within materials influence each other, providing crucial insights into the field. This dissertation presents an investigation …

Multifaceted Life Skills Training And Job-Orientation Supports For Individuals In Vocational Rehabilitation Programming, Laura R. Mccray

Graduate Theses, Dissertations, and Problem Reports (ETD)

There is growing support for those with an intellectual or developmental disability (IDD) in the transition process and within the workplace, however, there are areas that need to be addressed to facilitate further inclusion and success in this domain. There are structured institutions within the community that extend support for those transitioning out of high school, focusing on aligning with life training and professional skills while promoting societal integration by delivering services directly and avoiding isolation within traditional service environments (Accardo & Whitman, 2011). Growing research highlights the necessity of providing resources that support individuals with intellectual and developmental disabilities …

Predictors Of Success In Whole-Classroom Narrative Interventions For Elementary School Children, Malia Sayavong

Graduate Theses, Dissertations, and Problem Reports (ETD)

ABSTRACT

Predictors of Success in Whole-Classroom Narrative Interventions for Elementary School Children

Malia Sayavong

Purpose:

Developmental Language Disorder (DLD) is a neurodevelopmental communication disorder that significantly affects a child’s ability to acquire and use language for speaking, listening, reading, and writing. Children with DLD often experience persistent difficulties with vocabulary, grammar, comprehension, and narrative construction, which can interfere with academic achievement and social interaction. Classroom-based narrative interventions have shown promise in supporting language growth in this population, yet not all students benefit equally. Multiple individual characteristics—including language profiles, cognitive abilities, and environmental factors—may influence intervention outcomes. Therefore, the purpose of …

Providing Health Providers Best Practice Strategies When Working With The Deaf And Hard Of Hearing Population: A Continuing Education, Noah L. Epperson

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background: Healthcare training has improved over the years. However, many healthcare providers are having a difficult time understanding the culture and the needs of the Deaf and Hard of Hearing (HOH) community. Continuing Education (CE) programs can be designed to improve cultural awareness to help close the gap by educating healthcare providers on the community’s culture, effective communication strategies, use of assistive technology, American Sign Language (ASL), and accommodations such as interpreters.

Purpose: The project aimed to develop a CE program that helped healthcare providers learn effective communication strategies, assistive devices, and accommodations for the Deaf and HOH community. Additionally, …

Effectiveness Of A Cumulative Pediatric-Based Practical Examination At Increasing Student Perceived Competence And Confidence In Working With Pediatric Populations, Nicholas J. Passarelli

Graduate Theses, Dissertations, and Problem Reports (ETD)

Current literature highlights the importance of utilizing practical examinations and actual patients and covering vast pediatric content within occupational therapy curricula. The needs assessment conducted within The West Virginia University Division of Occupational Therapy revealed that the division currently employs all three of these factors within their curriculum, however a gap presented in the combination of these three factors together. This project aimed to diminish this gap through the development, implementation, and execution of a pediatric practical examination, utilizing actual pediatric patients, to determine whether the examination is effective in increasing student perceived competence and confidence in working with pediatric …

The Personal, The Political, And The Hope For A Better Future: Disrupting The Traditional Rape Narrative In Young Adult Fiction, Melissa Roberson

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation critically examines the current state of young adult rape fiction to explore the ways in which contemporary young adult rape novels engage with different aspects of rape culture and the systems in place that sustain it. Prioritizing issues related to disclosure, hope, healing, and justice, my investigation into these novels demonstrates the importance of attending to both the framing of rape and the challenges associated with narrativizing sexual violence in the context of adolescent literature. Ultimately, I argue that in order to challenge and disrupt the further entrenchment of societal attitudes and (mis)perceptions of rape that perpetuate the …

Experimental And Finite Element Analysis Of Vacuum Infused Frp Composite Π-Joints, Jared Cameron Short

Graduate Theses, Dissertations, and Problem Reports (ETD)

Composite π-joints are valued for their potential to reduce component weight, lower manufacturing costs, and simplify assembly. In aerospace applications, these qualities become even more valuable; however, these advantages must be carefully balanced with the safety requirements. Given the complexity of the π-joint geometry, it is crucial to determine and optimize the mechanical properties to ensure quality, performance, and safety throughout the lifetime of the part.

This thesis aims to investigate the effects of various factors on the mechanical properties of a composite π-joint manufactured using vacuum-assisted resin transfer molding (VARTM) processes. The discussion focuses on the effects of fabric …

Exploring Teacher Perception And Implementation Of Sae Programming In West Virginia, Joseph Laflamme

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to describe the phenomenon of SAE implementation in West Virginia. This study utilized qualitative research methodology to describe teacher perceptions of how student, guardian, school and community factors affect SAE program implementation. Additionally, teacher backgrounds, including formative experiences, training and education, guiding philosophies, skills, and motivation were explored. This study describes contextual aspects of population, economics, state guidelines and local agriculture industries. This is done through a document review of student reported records as well as surveys and teacher interviews.

Creative Energies: Unearthing The Role Of Romantic Ecocriticism, Nicole Marie Chambers-Stahl

Graduate Theses, Dissertations, and Problem Reports (ETD)

The literary field of ecocriticism has transcended the boundaries of Academia: excited to connect to their physical environments, many of these scholars are focusing on genres like place-based writing, rhetoric of energy policy, and representations of the Earth in film and media. Interdisciplinary by nature, ecocriticism has demonstrated clear potential in its ability to intersect with concentrations like the history of science, animal studies, and environmental justice.

However, as the language around global crises is heating up —“Today it is scientists, not prophets,” writes Tobias Menely in “‘The Present Obfuscation,’” “who speak the language of apocalypse” (478)—ecocritical scholarship is at …

Biomechanics Of Teeth Alignment Using Clear Aligners With Various Attachment Shapes And Orientations, Egon Mamboleo

Graduate Theses, Dissertations, and Problem Reports (ETD)

Clear aligners have emerged as the most popular and preferred method of treatment for patients with orthodontic malocclusions. This is greatly due to the comfort and aesthetically appealing factors when compared to fixed appliances . Clear aligners are either thermoformed or 3D direct-printed plastics that apply biomechanical forces to the surface of teeth to trigger tooth movement and bone remodeling process. Common Class I malocclusions with mild or moderate crowding can be treated with clear aligners alone. However, treatment of Class II and Class III malocclusions that require extraction of permanent teeth or correction of severe rotations, and teeth extrusions …

Five-Year Analysis Of Kiko Buck Growth Rate, Carcass Muscling And Parasite Resistance In A Feedlot Setting, Garrett Thomas Vaughan

Graduate Theses, Dissertations, and Problem Reports (ETD)

Five-year analysis of Kiko buck growth rate, carcass muscling and parasite resistance in a feedlot environment

Garrett T. Vaughan

From 2018 to 2023, Kiko bucks born from January 1^st to March 15^th were performance tested at West Virginia University to evaluate growth rate, ultrasound carcass characteristics and parasite resistance under an artificial infection. Kiko bucks were submitted by producers from 17 different states and over 5 performance tests, 830 Kiko bucks were evaluated. Bucks were group housed and fed ad libitum with a 16% CP pellet containing soyhulls, serving as the dietary fiber component. Upon arrival, bucks were …

Not Everyone Believes Sports Are A Safe Space: Development Of A Toxic Sports Fandom Scale, Thomas Dean Bobbitt

Graduate Theses, Dissertations, and Problem Reports (ETD)

Dysfunctional Fan Behavior is a concept developed by Wakefield & Wann (2006), that describes fan conduct, consisting of complaining and confrontation, that ruins the experience of sporting events for others. However, there is some evidence that although the items featured in the Dysfunctional Fan Behavior Scale are perceived as negative, they are also viewed as relatively normal and appropriate of sports fans. Bobbitt et al.’s (in press) qualitative analysis suggests that these behaviors are not always considered destructive or toxic in the context of sport, but the line between benignly rude and genuinely antisocial behavior is somewhat difficult to define. …

Microwave-Assisted Reduction Of Critical Metal Oxides From E-Waste Mixture, Kurundu Shavinka Jayasekera

Graduate Theses, Dissertations, and Problem Reports (ETD)

The efficient recovery of critical metals such as tantalum (Ta), manganese (Mn), gallium (Ga), and indium (In) from electronic waste (e-waste) is essential for resource sustainability and environmental protection. This research uses microwave-assisted treatment to investigate the carbothermal reduction of these four specific metals from their oxides in a simulated e-waste mixture, with carbon black serving as both a microwave coupling and reduction agent. Microwave processing is used specifically because it offers a rapid and energy-efficient alternative to conventional thermal methods, with the benefits of intrinsic heating and selective heating of materials. The first experiments centered on understanding the effects …

The Effect Of Facial Phenotypes On Differential Performance Of Facial Recognition, Evan R. Garrett

Graduate Theses, Dissertations, and Problem Reports (ETD)

Facial recognition technology is utilized in many facets of life. As the use has become more widespread these systems have improved in reliability and performance approaching the level of human accuracy. With these improvements the problem of bias still remains as a persistent problem. Efforts have been made to minimize the bias prevalent in the systems via studies into various demographic factors, creating training datasets that have a more uniform distribution of subjects, and other methods. As facial recognition is one of the most utilized forms of biometric recognition it is vital to analyze potential causes of bias to help …

Augmentation And Hybridization Of Conventional Forms Of Process Control With Advanced Control Methods, Daniel Paul Beahr

Graduate Theses, Dissertations, and Problem Reports (ETD)

Within the last decade in the field of process control, there has developed a distinct gap between the technological advancements of today and the well-established theory that has preceded it. This is most evident where the novel developments and structures often outpace the necessary guarantees and strong foundation required to ensure the possibility of widespread adoption. Therefore, the goals of this work are to broadly integrate those novel advanced control methods into the field of process control in such a way to increase the applicability and encourage implementation.

The first portion of this work seeks to further explore the nature …

Quantitative Assessment Of Knee Joint Stability Using Inertial Measurement Units In Patients With Acl Reconstruction Performing Single-Legged Hopping Tasks, Haley Hartman-Mongold

Graduate Theses, Dissertations, and Problem Reports (ETD)

Purpose: The purpose of this study was to examine proximal tibial IMU accelerations between the involved limb and uninvolved limbs of individuals who have undergone ACL reconstruction performing the single-leg hop test battery and to correlate these results to deficits in quadriceps strength and distance hopped. Methods: Thirty-four subjects (19 male, 15 female; age = 20.5 ± 6.7 years; mass = 76.4 ± 15.8 kg; height = 1.74 ± .08 cm) who have undergone unilateral ACL reconstruction were recruited for this study. An isokinetic dynamometer was used to assess the knee extension peak torque on the involved and uninvolved limbs. …

Back To The Future Self: Parsing Age Effects In Future Self-Continuity Through Goal Orientation And Life Satisfaction, Laken A. Mooney

Graduate Theses, Dissertations, and Problem Reports (ETD)

Future self-continuity, the psychological feeling of connectedness between the current and the future self, is a relatively novel concept that is associated with and has been used to predict a variety of outcomes. Though work investigating individual differences is comparatively rare, a robust demographic difference found in previous literature is the presence of an age effect, where older adults are more likely to feel a greater connection to their future self than younger adults. This finding has been replicated a number of times, but potential mechanisms behind this observed age-related increase have yet to be fully uncovered. Limited previous work …

Chopin’S Innovation And Influence On The French Piano School: From His Predecessors To His Principal Students And Successors, Wenjun Xia

Graduate Theses, Dissertations, and Problem Reports (ETD)

Chopin’s Innovation and Influence on the French Piano School: From his Predecessors to his Principal Students and Successors

Wenjun Xia

This research explores Frédéric Chopin's (1810–1849) innovations in piano technique, pedagogy, composition, and interpretation, as well as Chopin’s subsequent influence on the French piano school. Before Chopin’s arrival in Paris, the French piano school was primarily influenced by Louis Adam (1758–1848) and Friedrich Kalkbrenner (1785–1849), whose approaches dominated piano pedagogy at the Paris Conservatoire. Early French piano pedagogy centered on finger precision, virtuosity, and clarity, but expressivity was somewhat limited. Chopin initiated Romantic trends that emphasized emotion and natural physical …

Development Of Fast And Comprehensive Approaches For Gunshot Residue Interpretation Using Ambient Ionization, Mass Spectrometry, And Microparticle Sampling Studies, Thomas Dimmey Ledergerber

Graduate Theses, Dissertations, and Problem Reports (ETD)

The information derived from the forensic examination of gunshot residue (GSR) can be critical during the investigative and trial stages in the criminal justice system. However, the complexity of the GSR deposition, transfer, and persistence mechanisms calls for meticulous handling and identification processes. Novel advances in evidence interpretation and analysis via instrumental methods are current areas of growing interest that must be pushed along the chain from research to practice in a timely manner. Therefore, this research focuses on developing both rapid and comprehensive methods for detecting gunshot residue evidence and effectively communicating its significance to the investigators or trier …

La2nio4+Δ-Based Solid Oxide Electrolysis Cell (Soecs) Electrodes Enhanced With Complex Perovskite Nanocatalyst Processed By Surfactant-Enabled Infiltration, Cole Samuel Klemstine

Graduate Theses, Dissertations, and Problem Reports (ETD)

As the world seeks to reduce its reliance on hydrocarbons, the demand for sustainable hydrogen production methods has become increasingly critical. Hydrogen is a versatile energy carrier that can be produced from various sources, including water, natural gas, and biomass. Replacing the burning of hydrocarbons with hydrogen could significantly reduce greenhouse gas emissions, contributing to global climate goals like those set by the US H2NEW program. The joint technologies of solid oxide fuel and electrolysis cells present the ability to both produce and process clean hydrogen to meet these goals. Development into solid oxide fuel cells has been met with …