Digital Commons Network^™

Early Life Adversity And Reward Reactivity In Humans, Maria C. Potts

Graduate Theses, Dissertations, and Problem Reports (ETD)

Both animal and human research has identified early life adversity (ELA) as a prominent risk factor for substance use disorder (SUD). However, the underlying mechanisms linking ELA to SUD development remain unclear. Animal studies point to differences in reward responsiveness as the primary explanation; specifically, that ELA could lead to individual differences in the attribution of incentive salience to reward-predictive cues, or the “sign-tracking” behavioral phenotype. Sign-tracking has been linked to addiction-related behaviors in both animal and human studies, but no human studies have examined whether sign-tracking could partially explain the link between ELA and SUD. In fact, human studies …

The Effect Of Innovative Value Proposition On Buyer Reactions: The Moderating Roles Of Price Orientation And Perceived Risk, Chad Stuttz

Graduate Theses, Dissertations, and Problem Reports (ETD)

Value propositions are essential to the success of personal selling in the Business-to-Business (B2B) context. While earlier studies have offered valuable insights into the roles of value propositions in driving B2B sales, they have often regarded value propositions as uniform. In this dissertation, I argue that value propositions vary in their levels of innovativeness. The dissertation introduces the concept of innovative value proposition (IVP) and proposes that IVP indicates greater future growth potential to buyers, leading to more favorable reactions such as responsiveness and willingness to engage than less innovative ones. Additionally, the dissertation explores the moderating effects of buyer …

Development Of Periodic Plasmonic Nano-Structures For Enhanced Labeled Bio-Sensing Systems, Kyle Zackary Smith

Graduate Theses, Dissertations, and Problem Reports (ETD)

The biomedical industry has seen sustained growth over the past half century, with a continually increasing demand for flexible, easy-to-use, and cost-effective tools. One large area of commercial interest has been point-of-use or point-of-care diagnostics, using optical based Lab-On-Chip (LOC) style systems. Label and label-free fluorescence detection systems are common benchtop modalities that have seen recent integration into these portable, cost-effective LOC applications. However, despite their maturity, there are still opportunities to improve device characteristics, specifically in reference to throughput, limit-of-detection (LOD), and hybrid integration (along with associated costs).

Optical research avenues at WVU have focused on improving these systems …

The Deposition, Prevalence, And Persistence Of Gunshot Residue In Standard And Less Lethal Ammunition, Liliana Claire Barbosa

Graduate Theses, Dissertations, and Problem Reports (ETD)

During the discharge of a firearm, gunshot residue (GSR) is released and settles into nearby surfaces, leaving traces that can provide valuable information for forensic investigations. This study aims to improve understanding of the deposition, prevalence, and persistence of standard and less-lethal ammunition through an analytical framework that examines collection and analysis protocols, revealing connections among multiple traces for effective use in investigations and courtroom proceedings.

Research into the chemical residues of less lethal ammunition (LLA) is a critical frontier in shooting investigations. While standard leaded ammunition has over a century of established literature, the chemical fingerprints of LLA residues …

Sedimentological And Geochemical Investigation Of The Origin Of Upper Pennsylvanian Black Shales, East-Central Appalachian Basin, Tyler Hickey

Graduate Theses, Dissertations, and Problem Reports (ETD)

In the east-central Allegheny foreland basin, laminated black shales overlying Upper Pennsylvanian Glenshaw Fm. coal seams record paleoenvironmental conditions associated with the termination of peat swamp deposition before, during, and after the Carboniferous Coal Forest Collapse (CCFC), a major paleobotanical evolutionary event during the Late Paleozoic Ice Age (LPIA) that contributed to extinction of lepidodendrons near the Desmoinesian-Missourian boundary (~306 Ma). Previous investigations of the CCFC commonly implicate an episode of aridification during intensification of LPIA glaciation that stressed the lepidodendrons beyond their ecological tipping point; however, the cause of this aridification is unclear. An investigation of Glenshaw Fm. black …

Survival In The Stigmatized Industry (Bitcoin Atm), Brooks Mcadam

Graduate Theses, Dissertations, and Problem Reports (ETD)

ii ABSTRACT Survival in the Stigmatized Industry (Bitcoin ATM) Brooks McAdam This paper examines how companies can survive in a stigmatized industry where the same message may attract customers while simultaneously generating skepticism. The study posed the following research question using the Bitcoin ATM industry as the context: Does the message presented on company websites influence the degree of exit risk in a market characterized by moral concerns, exposure to fraud, and unstable regulation? The answer is clear. Messaging is important; however, not every message is equally important. Fee-related messaging emerged as the most consistent predictor of exit risk. Messaging …

Deep-Learning-Based Generation Of Synthetic Contactless Fingerphotos, Christopher Harry Burton

Graduate Theses, Dissertations, and Problem Reports (ETD)

The collection of biometric data is a labor-intensive, high-resource process that presents significant logistical, privacy, and cost barriers for researchers and developers. To address these challenges, the biometrics community has increasingly turned to generative models capable of producing synthetic datasets that reflect the statistical properties of real data. While substantial progress has been made in synthetic fingerprint generation for contact-based modalities, the contactless fingerphoto domain has remained largely underserved. This work presents a deep learning-based approach to synthetic contactless fingerphoto generation using a Stable Diffusion model guided by multimodal conditions (text and image). The dataset used for training was collected …

Supply Chain Optimization For Fertilizer Production From Wastewater, Ethan Clement Robey

Graduate Theses, Dissertations, and Problem Reports (ETD)

In West Virginia, approximately 27,000 tons of wastewater solids are generated annually, with nearly 75% being landfilled or alternatively disposed of in a non-beneficial manner. Over the past two decades, the amount of these solids being taken for beneficial uses, such as agricultural application, has declined by 25%, while landfilling has increased by more than 30%. This highlights issues related to eutrophication and disposal costs. This study aims to develop a supply chain optimization framework that addresses the conversion of wastewater solids into fertilizers to match local farm requirements, while determining processing facility locations that minimize transportation costs. To determine …

Optimization Of Feed Manufacturing Productive Capacity, Feed Quality, And Feed Safety Utilizing A Variety Of Pellet Die Parameters, Feed Additives, Conditioning Specifications, And Simulated Feed Bin Storages, Lucas Edward Knarr

Graduate Theses, Dissertations, and Problem Reports (ETD)

In Chapter 2, an experiment was conducted to determine if the inclusion of 1.50% mixer-added water (MAW) and/or 0.25% Azomite^® (AZM) would be suitable in alleviating concerns regarding pellet production rate and pellet quality when manufacturing feed with low-moisture corn. Furthermore, the authors aimed to determine if these additives had varying effects when utilizing different pellet die thicknesses. A 2 (Azomite; 0.00% or 0.25%) x 2 (mixer-added water; 0.00% or 1.50%) x 3 (pellet die thickness; 32 mm, 38 mm, or 45 mm) factorial arrangement was utilized to create the twelve experimental treatments, each manufactured …

Genomic Variation, Adaptive Evolution, And Invasive And Evolutionary History Of Microstegium Vimineum, Cameron William Corbett

Graduate Theses, Dissertations, and Problem Reports (ETD)

Invasive species can cause environmental and economic damage, but can offer unique opportunities to study rapid evolution and adaptation in novel environments. Microstegium vimineum (stiltgrass) is a prolific invasive grass in the eastern United States. Historical herbaria collections were used to identify patterns of invasion history and population dynamics over a spatial and temporal scale. Analyses of plastid genomes reveal a complex invasion history, including a single introduction in the southern United States linked to Japan and multiple repeated introductions in the northern United States from various source populations. Spread of introduced populations provide evidence of admixture among previously geographically …

Preference Of Smiling Esthetics By Caucasian And Chinese Orthodontic Professionals, Tamana Spingher

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background and Objectives: Comprehensive orthodontic treatment aims to achieve optimal facial esthetics, which is guided by established norms that have shown variability across different ethnic and gender groups. There is a paucity of literature comparing the esthetic preferences of Chinese and Caucasian orthodontic professionals regarding smiling esthetics. The purpose of this study was to determine the perceived smiling attractiveness ratings between Chinese and Caucasian orthodontic professionals. Methods: One Chinese and one Caucasian lateral smiling photograph generated by artificial intelligence (AI) were used in this study. The maxillary central incisor position was digitally manipulated to simulate variations in anteroposterior (AP) position …

Bridging The Sensory Gap With Occupational Therapy: Program Development For Sensory Integration In Inpatient Rehabilitation For Adults With Central Nervous System Injuries, Callie Marie Honaker

Graduate Theses, Dissertations, and Problem Reports (ETD)

Objectives: This project aimed to identify sensory processing deficits in adults with central nervous system injuries and to inform the development of sensory-informed program components in an inpatient rehabilitation setting. Participants: A total of 76 adults admitted with diagnoses including cerebrovascular accident, brain injury, and spinal cord injury were included. Methods: A structured sensory screening and mental health questionnaire were administered and compared to prescreening admission documentation and PHQ-9 scores. Descriptive statistics and inferential analyses were conducted. Results: Sensory impairments were highly prevalent, with participants demonstrating an average of three impairments across the sensory domains. Proprioceptive, tactile, and visual deficits …

Effects Of Fluency-Based And Percentage-Based Mastery Criteria On Learning, Maintenance, Application, And Learner Experience In Behavior-Analytic Skill Acquisition, Marisela Alicia Aguilar

Graduate Theses, Dissertations, and Problem Reports (ETD)

In behavior analysis, staff are often trained to percentage-based criteria to demonstrate that they have mastered a skill. However, percentage-based mastery criteria may not result in long-term maintenance of the skill. In other areas of instruction, fluency criteria resulted in multiple positive outcomes such as maintenance, endurance, and application of the skill beyond the training context, but these outcomes have not yet been widely demonstrated in the context of teaching behavior support plan (BSP) content and implementation. Across two experiments, we attempted to evaluate the extent to which training individuals to a fluency-based or percentage-based criterion resulted in maintenance and …

Lighting The Woods When There Are No Woods, Michael M. Mcginley

Graduate Theses, Dissertations, and Problem Reports (ETD)

This thesis will document my own journey into the woods. I will discuss my role as the lighting designer, highlighting my design processes and decisions. The show’s evolution and history from the first design meeting to opening night will be documented and reflected upon. Additionally, I will expand on collaboration with the other design team members, the challenges and struggles that I encountered, and lastly my own reflection on the entire process. I will be using lighting paperwork, research photos, and production photos to illustrate key points and highlight details.

The Resilient Educator: Examining The Role Of Resilience On A First-Year Rural Music Educator’S Job Satisfaction, Isaac Price

Graduate Theses, Dissertations, and Problem Reports (ETD)

The future of music education in schools is largely determined by educators' resilience in their positions. Resilience is the process of adapting to adversity by accessing and utilizing intrinsic and extrinsic resources available (Gu & Day, 2007; Squires et al., 2023). Resilience affects various aspects of an educator’s personal and professional life, including job satisfaction (Li, 2023). Job satisfaction can affect teacher health, teacher performance, and teacher retention, which in turn may affect student performance (Huysman, 2008; Lu et al., 2024; Robison & Russell, 2022). The circumstances and events that occur during a teacher’s first year in the profession can …

Virtual Ensembles_ A Beginner's Guide For Recording Multitrack Audio Projects In Logic Pro, Joseph Walczyk

Graduate Theses, Dissertations, and Problem Reports (ETD)

During the COVID-19 pandemic, musicians worldwide were suddenly unable to rehearse and perform for live audiences. This, however, did not stop people from finding ways to continue making music and perform. The idea of a virtual ensemble was not new, but it was a mystery to many. The author’s own virtual ensemble, Cinematic Brass, is one of the many groups that found continued success in producing virtual ensemble projects post-pandemic. This research aims to demystify the process, helping beginners take their first steps towards high-quality virtual ensemble audio recordings. Included are equipment recommendations, examples of file organization and communication, recording …

Evaluation Of Brook Trout (Salvelinus Fontinalis) Thermal Tolerance And Projected Climate Change Effects On Headwater Brook Trout Population Persistence, Cory Bauerlien

Graduate Theses, Dissertations, and Problem Reports (ETD)

Climate change has been identified as one of the greatest threats to global biota in recorded human history. Consequences are expected to be more pronounced in ectotherms because most of their physiology is controlled by external temperature conditions. Predicting how ectotherms may respond to increasing global temperatures necessitates information about thermal limits of thermal sensitive species and how increasing temperatures may affect individual and population-level fitness. Therefore, the objectives of this research were aimed at gaining a better understanding of the mechanisms that underpin thermal tolerance limits of fish and how those mechanisms may affect fitness and population persistence under …

A Constraint-Based Approach To Developing Melodic Improvisational Skills In Intermediate Jazz Piano Students, Alton Xian Rong Wong

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study examines the pedagogical value of a constraint-based approach in helping students develop improvisational fluency and coherence by facilitating audiation. Although there are pedagogical texts on jazz improvisation that incorporate exercises shaped by constraint-based thinking, there is neither a systematic framework for their application with students of varying levels and musical backgrounds, nor a clear explanation of their pedagogical purpose. This research investigates how constraint-based pedagogy, through the lens of rhythmic, harmonic, and melodic parameters, can be applied independently or collectively to support the development of improvisational fluency in intermediate level jazz piano improvisers. It argues that musical constraints …

Preparing The Professional: Selected Uses Of Digital Audio Workstations In Applied Tuba Studios, Reid Timothy Cox

Graduate Theses, Dissertations, and Problem Reports (ETD)

The modern music job market calls for musicians to cultivate and engage with a diverse range of area interests and skillsets. Collegiate music programs provide opportunities to prepare students professionally, yet programs have traditionally fallen behind changes in the job market. One way that music faculty within higher education can help prepare students to succeed after graduation is by teaching students to engage with digital audio workstations, also known as DAWs. Using DAWs, students can gain new practice tools, as well as learn skills that are helpful in a number of musical careers. This is of particular use to the …

Be A Man: Hypermasculinity And Hostile Attribution Bias As Predictors Of Violence, Kaley Nicole Potter

Graduate Theses, Dissertations, and Problem Reports (ETD)

In recent years, violence has risen to record-high numbers in communities and correctional facilities, with men perpetrating the vast majority of violent crimes. Hypermasculine values (e.g., power, aggression, and domination) have been linked to aggressive and violent behavior. Hostile attribution bias, which leads individuals to attribute hostile intent to neutral or ambiguous stimuli, has also been linked to aggression.

The current study used structural equation modeling (SEM) to examine hypermasculinity and hostile attribution bias as predictors of proclivity for violence, comprised of aggression and historical violence. The model was iteratively modified to assess changes in model fit and constructs. Male …

Adventures In Black Hole Binary Waveform Modeling, Siddharth Mahesh

Graduate Theses, Dissertations, and Problem Reports (ETD)

The modeling of black hole binaries requires accurate descriptions of both their relativistic vacuum dynamics and their interaction with surrounding astrophysical environments. Although these problems are often treated separately, this dissertation develops a unified view: key observables of black hole binary systems can be understood by identifying the dynamical instabilities that control their evolution. In the vacuum problem, the relevant unstable structure is associated with the remnant spacetime and its role in shaping the merger-ringdown gravitational waveform. In the environmental problem, the relevant instability is the epicyclic instability of orbits in the binary potential, which controls the location and evolution …

Among The Remnants, Jade-Lynn B. Lewis Vance

Graduate Theses, Dissertations, and Problem Reports (ETD)

This written thesis serves as supporting documentation and research for my Master of Fine Arts thesis exhibition, Among the Remnants, at West Virginia University. This dissertation will explain how my artistic vision, influences, research, and thesis exhibition fits into larger art and cultural contexts. Drawing from art history and theory, my work explores memory, touch, and fragmentation. My fascination with artifacts and the stories they hold inspires my research and drives me to create personal connections within my own art. The figurative sculptures serve as a vessel for recalling impactful experiences and embodying personal perception and these interactions. The …

Development Of Hydrogen Emissions Quantification Systems To Expand Understanding Of Leaks And Losses Associated With The Burgeoning Hydrogen Transportation Sector, Christopher Loomis

Graduate Theses, Dissertations, and Problem Reports (ETD)

To combat global warming, alternative fuels are being investigated. Hydrogen is at the forefront of this movement, advertised as having zero emissions due to the products of the energy reaction being only water. However, studies over recent decades indicate that hydrogen in the atmosphere acts as a form of greenhouse gas (GHG) by increasing the lifespan of methane in the atmosphere. Models are attempting to estimate the possible effects of a transition to a hydrogen-fueled economy but lack empirical data to provide confidence to these estimated values. There is little data that quantifies hydrogen from anthropogenic sources.

To address this …

A Prospective Analysis Of Success And Survival Of Haptic Robotically Driven Dental Implant Placement., Samuel Clarkman Smith

Graduate Theses, Dissertations, and Problem Reports (ETD)

Purpose: The aim of this prospective study was to assess survivability of dental implants placed using robotic computer aided implant surgery via Yomi® (Neocis, Inc. Miami, FL) after at least 1 year of functional loading. Secondary analysis included additional success and marginal bone loss outcomes after at least 1 year of functional loading of the same Straumann (Basel, Switzerland) titanium dental implants that were placed with the r-CAIS workflow. Materials and Methods: Since acquisition of the Yomi® robotic system, a comprehensive list of patients who underwent dental implant therapy via r-CAIS methodology at West Virginia University Department of Graduate Periodontics …

Reducing Inorganic Phosphorus In Poultry Diets: Nutritional Constraints And Strategies For Successful Implementation, Elizabeth Ann Lynch

Graduate Theses, Dissertations, and Problem Reports (ETD)

Applied poultry nutrition and feed manufacture science can be described as a “three-legged stool” supported by pellet quality, feed hygienics, and nutrient availability, where imbalance in any one component can compromise overall bird performance. The research presented herein primarily addresses feed hygienics and nutrient availability, with pellet quality serving as an underlying theme, to better understand how processing conditions and dietary formulation influence performance and nutrient utilization.

In Chapter 2, the objective of this study was to evaluate the effects of hygienizer retention time on bacterial reduction during feed manufacture using Enterococcus faecium as a Salmonella surrogate. Pellet mill motor …

Community Resilience Drives Change, Andrew Thomas Solt

Graduate Theses, Dissertations, and Problem Reports (ETD)

The opioid crisis has impacted many Americans. From 1999 to 2023, approximately 800,000 people have died due to opioid overdose (CDC, 2025). What began as overprescriptions of painkillers has quickly evolved into a complex social health issue that is now further worsened by stronger synthetic drugs like fentanyl. Fentanyl and fentanyl analogs (synthetic opioids that are very similar chemically to fentanyl) are often found in illegal drug supplies and in counterfeit pills (CDC, 2025). Thus, individuals who might have been initially overprescribed painkillers might now be pushed towards illegally produced drugs that are significantly more potent than what they were …

Community Resilience Drives Change, Claudia Rose Dilima

Graduate Theses, Dissertations, and Problem Reports (ETD)

The opioid crisis has impacted many Americans. From 1999 to 2023, approximately 800,000 people have died due to opioid overdose (CDC, 2025). What began as overprescription of painkillers has evolved into a complex social health issue that is now worsened by stronger synthetic drugs like fentanyl. Fentanyl and fentanyl analogs (synthetic opioids that are very similar chemically to fentanyl) are often found in illegal drug supplies and in counterfeit pills (CDC, 2025). Thus, individuals who might have been initially overprescribed painkillers might now be pushed toward illegally produced drugs that are significantly more potent than what they were originally prescribed. …

Enhancing Chime Data Integrity: Utilizing An Ancillary Antenna To Detect And Mask Radio Frequency Interference, John W. Metzger

Graduate Theses, Dissertations, and Problem Reports (ETD)

The Canadian Hydrogen Intensity Mapping Experiment (CHIME) is a radio telescope array designed to map Baryon Acoustic Oscillations (BAO) and detect Fast Radio Bursts (FRBs) within the 400-800 MHz frequency range. However, man-made Radio Frequency Interference (RFI), such as television broadcasts and cellular signals, significantly degrade data integrity and mask weak astronomical signals. This thesis details the design, simulation, and implementation of a slotted waveguide antenna at the Green Bank Outrigger (GBO) to detect and mask RFI. Utilizing cross-correlation, the system identifies similarities between the telescope and the horizon- pointing antenna to isolate interference. Mathematical models were used to determine …

Graded Repertoire For Violin By Latin American Composers: Pedagogical Analysis And Categorization Of Selected Pieces, Irene Guerra Rudas

Graduate Theses, Dissertations, and Problem Reports (ETD)

Repertoire sequences have evolved from a collection of technical studies into a comprehensive educational framework. This research aims to enhance the integration of innovative pedagogical materials by identifying, analyzing, and categorizing works originally composed for violin by Latin American composers. These works are assessed for their suitability within a structured violin curriculum and organized into graded levels, ranging from elementary to advanced.

Each selected piece is evaluated according to pedagogical parameters commonly used in established violin teaching traditions. These parameters include pitch range, rhythmic complexity, bow strokes, length, stylistic diversity, musical language, and the historical and cultural relevance of both …

Machine Learning-Based Prediction Of Heavy-Duty Diesel Engine Emissions And Comparative Analysis Against Statistical Models, Abdullah Ahmad Khan

Graduate Theses, Dissertations, and Problem Reports (ETD)

The increasing stringency of emissions regulations for heavy-duty (HD) diesel engines necessitates the development of accurate, efficient, and general predictive models for engine-out emissions under steady-state operating conditions. Traditional statistical approaches, while computationally efficient, often fail to capture the inherent nonlinear relationships between the engine operating parameters and emissions formation. In contrast, machine learning (ML) techniques offer a promising alternative by learning the complex patterns directly from experimental data. The present thesis summarizes a comprehensive study on the prediction of steady-state, HD diesel engine emissions using ML models, along with a comparative analysis against conventional statistical modeling approaches.

A high-quality …