Digital Commons Network^™

Ear Biometrics: A Comprehensive Study Of Taxonomy, Detection, And Recognition Methods, Susan Awm El-Naggar

Graduate Theses, Dissertations, and Problem Reports (ETD)

Due to the recent challenges in access control, surveillance and security, there is an increased need for efficient human authentication solutions. Ear recognition is an appealing choice to identify individuals in controlled or challenging environments. The outer part of the ear demonstrates high discriminative information across individuals and has shown to be robust for recognition. In addition, the data acquisition procedure is contactless, non-intrusive, and covert. This work focuses on using ear images for human authentication in visible and thermal spectrums. We perform a systematic study of the ear features and propose a taxonomy for them. Also, we investigate the …

Electronic Structure Of Early Transition Metal Complexes Supported By Pyridine Polypyrrolide Ligands, Dylan Connor Leary

Graduate Theses, Dissertations, and Problem Reports (ETD)

A thorough study of photoluminescent molecules involving the pyridine polypyrrole(ide) ligand platform has been conducted. A detailed analysis on speciation of the proligand H₂(^MesPDP^Ph) (H₂^MesPDP^Ph = 2,6-bis(5-mesityl-3-phenyl-1H-pyrrol-2-yl)-pyridine) and its dilithium salt Li₂(^MesPDP^Ph) revealed temperature- and solvent-dependent effects. These molecules, along with the hydrochloric acid adduct [H₃(^MesPDP^Ph)]Cl were found to exhibit short-lived photoluminescence in both tetrahydrofuran and benzene solution. These findings confirm the hypothesis that heavy-atom involvement is crucial for the favorable photophysical properties observed for the Zr(PDP)_{2 …}

Developing An Evaluation Process For Telehealth In A Copd Clinic, Jodi H. Biller

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background: Telehealth was broadly implemented as a care modality in response to a worldwide pandemic in 2020. Before the COVID-19 pandemic, while telehealth was not new, it was not widely utilized at the project site location, and a uniform method of evaluating its effectiveness was needed. This quality assurance project developed and piloted a uniform process to evaluate telehealth in a Chronic Obstructive Pulmonary Disease (COPD) clinic, then evaluated stakeholder perceptions about the process used in developing the evaluation tool.

Methods: The telehealth evaluation tool was developed using the National Quality Forum (NQF) framework and Global Obstructive Lung Disease (GOLD) …

Covid-19: Examining Adherence Through The Health Belief Model, Leah Ashton Brown

Graduate Theses, Dissertations, and Problem Reports (ETD)

Over 6.4 million individuals have died due to COVID-19. Although the vaccine has been distributed and made more accessible, it is important for individuals to continue adhering to guidelines that prevent the spread of this deadly virus. The current study explored adherence to COVID-19-related health behaviors (wearing a mask, social distancing, properly washing hands, and receiving the COVID-19 vaccine) in a U.S. sample (recruited through Amazon MTurk) and examined the role of interactions among various identities. The study was informed by the Health Belief Model (HBM) and participants completed questionnaires that assessed COVID-19 health behaviors, constructs comprising the HBM (perceived …

The Relationship Between Oral Health And Health-Related Quality Of Life Among Hemodialysis Patients In Rural West Virginia, Kimberly A. Wallace

Graduate Theses, Dissertations, and Problem Reports (ETD)

Introduction: Approximately 786,000 Americans are currently diagnosed with end-stage renal disease, 71% of whom are undergoing hemodialysis (HD) treatment. There is a bidirectional relationship between chronic kidney disease and periodontal disease. Among HD patients, poor oral health is prominent and can negatively impact general health and health-related quality of life. Appalachian residents experience extreme health and poverty inequities and limited access to healthcare and dental providers.

Method: The study was designed based on the Andersen Behavioral Model of Health Services Use. 120 participants from 6 outpatient HD centers were enrolled. Data were collected using a 34-item questionnaire including oral health …

Love At First Profile: An Experiment Exploring If Previously Incarcerated Individuals Are Less Desirable While Online Dating, Carina L. Perrone

Graduate Theses, Dissertations, and Problem Reports (ETD)

Incarceration is a rapidly increasing occurrence in the United States with more than 1.4 million people incarcerated and more than 2 million on some form of restricted confinement. While men are incarcerated at a much higher rate than women, women are still at a steady incline of incarceration as well. Also, people of color disproportionately make up a large number of those incarcerated while accounting for a small percentage of the general population. Previous research on people who have been incarcerated focuses on it affects education, employment, and marriage. Little research has attempted to explore how incarceration effects dating, a …

Tumor-Targeted Ph-Sensitive Manganese Oxide Nanoparticle For Enhanced Detection Of Breast Cancer Using Mri, Celia Martinez De La Torre

Graduate Theses, Dissertations, and Problem Reports (ETD)

In the United States, approximately 287,850 new cases of invasive breast cancer will be diagnosed, and over 43,000 women will die because of it in 2022. Currently, mammography is the gold standard for breast cancer surveillance. Although this detection technique is relatively cheap and fast, it misses about 1 in 5 breast cancers in younger women with dense breast tissue, causing a delay in treatment. Compared to mammography, magnetic resonance imaging (MRI) has superior soft-tissue contrast that elucidates structural differences within soft tissue to detect more breast cancers. However, MRI still misses

NEMO particles were produced by synthesizing manganese oxide …

Replication Of A Nonsequential Renewal Model And Investigation Of Extinction Cues For Attenuating Renewal, Brianna G. Sarno

Graduate Theses, Dissertations, and Problem Reports (ETD)

Laboratory models of renewal are critical to inform clinical practice to reduce the occurrence of relapse and facilitate the maintenance of treatment gains. Nonsequential renewal is a modified procedure developed by Sullivan et al. (2018) that provides an alternative arrangement to study operant renewal in a manner more consistent with clinical experience. Experiment 1 replicated the procedure of Craig et al. (2019) to compare renewal of target responding in rats that were exposed to the nonsequential or sequential renewal procedure. Experiment 2 investigated the use of an olfactory extinction cue in mitigating renewal. In Experiment 1, the Nonsequential Group displayed …

Comparison Of Maintenance Cost Of Medium And Heavy-Duty Alternative Fuel And Diesel Vehicles, Isaac C. Boyce

Graduate Theses, Dissertations, and Problem Reports (ETD)

Abstract

Comparison of Maintenance Cost of Medium and Heavy-Duty Alternative Fuel and Diesel Vehicles

Isaac Boyce

This study was conducted to provide an in-depth analysis of the differences in maintenance cost with the use of alternative fuel and diesel in medium (MD) and heavy-duty (HD) vehicles. With the push toward lower emissions from transportation vehicles for a cleaner future, the United States of America (US) has incentivized the conversion from the use of conventional fossil fuel, diesel, to lower carbon alternatives. With the increased potential for the use of alternative fuels, an investigation is warranted to understand the differences. This …

The Musashi Rna Binding Proteins Are Regulators Of Alternative Splicing And Protein Expression In Photoreceptor Cells, Fatimah Kh. Matalkah

Graduate Theses, Dissertations, and Problem Reports (ETD)

The Musashi (Msi) family of RNA binding proteins consists of two paralogs, Msi1 and Msi2, that are highly conserved across species. The two paralogs have emerged as factors that promote stem cell proliferation by post-transcriptionally regulating translation. In addition to their expression in stem cells, the Musashi proteins are also expressed in postmitotic neurons, including the photoreceptor cells. The Musashi proteins have been observed to maintain high expression levels in the postmitotic photoreceptors within the eye of both invertebrates and vertebrates. These observations suggest an additional role in the maintenance of terminally differentiated neurons.

Building upon these observations, we investigated …

Decentralized Cooperative Localization For Multi-Robot Systems In Challenging Environments, Eduardo Gutierrez

Graduate Theses, Dissertations, and Problem Reports (ETD)

Multi-robot systems provide more adaptability and robustness than conventional single-robot systems. This is because they have the ability to achieve partial completion of a task in the presence of failures due to the intrinsic inclusion of non-single-point failure. In multi-robot systems, cooperative localization refers to the use of relative measurements to improve the group’s overall localization performance. While centralized architectures in the system may result in unfeasible cases due to the high cost of computation and communication, decentralized methods distribute the computation among the robots in the group, enhancing the performance and making the system more efficient. Achieving a reliable …

Elucidating The Proteasomal Regulatory Mechanism Of Proteasome Activator Pa28Γ /Regγ, Taylor Ann Thomas

Graduate Theses, Dissertations, and Problem Reports (ETD)

Virtually all cellular processes are precisely regulated by the proteasome which is the primary enzyme responsible for the degradation of misfolded, damaged, or no longer necessary soluble proteins. To prevent any untimely degradation of these target protein substrates and protect the cell, the proteasome is tightly regulated via adaptor proteins, known as proteasomal regulators. There are many classes of proteasomal regulators each with their own unique structures, functions, and effects on protein degradation through the proteasome. One such class is the 11S family of proteasomal regulators which are also referred to as PA26/28, or REG. The 11S family are ATP-independent …

Photophysics And Photochemistry Enabled By Ligand-To-Metal-Charge-Transfer: Unusual Carbon-Carbon Bond Formation At A Zirconium Center, P. Minh N. Do

Graduate Theses, Dissertations, and Problem Reports (ETD)

Six Group 4 metallocene derivatives of group 4 incorporating a redox active benzene-1,2-thiolate ligand (bdt) were prepared. These complexes were characterized using one- and two-dimensional nuclear magnetic resonance (NMR) spectroscopy. Additionally, X-ray crystallographic analyses of these complexes, with the exception of Cp₂Zrbdt (Cp = cyclopentadienyl), reveal C_2v symmetric structure in the solid-state. All species display electronic absorption bands that are ligand-to-metal charge transfer (LMCT) in character well into the visible region. Spectroscopic data combine with time dependent-density functional theory calculations showed fluctuation in solution which promotes non-radiative energy loss and leads to the absence of emission in …

Synthesis, Characterization, And Activation Of Pyridine Dipyrrolide Supported Vanadium-Nitrogen Multiple Bonds, Jordan Cruz Martinez

Graduate Theses, Dissertations, and Problem Reports (ETD)

The chemistry of coordination complexes of vanadium supported by pyridine di-pyrrolide pincer ligands was probed via the synthesis and investigation of a variety of compounds from the trivalent starting material, (^MesPDP^Ph)VCl(thf)₂. Under reducing conditions and subsequent addition of terpyridine, a redox transfer series (1-, 0, 1+) stemming from the neutral product (^MesPDP^Ph)V(terpy) was isolated and characterized by X-ray crystallography. The precise bond lengths, in conjunction with bulk magnetic susceptibility, allowed for a detailed study of the redox non-innocence of polypyridyl ligands in these systems.

Metathesis of the halide starting material …

Probabilistic Space Weather Modeling And Forecasting For The Challenge Of Orbital Drag In Space Traffic Management, Richard J. Licata Iii

Graduate Theses, Dissertations, and Problem Reports (ETD)

In the modern space age, private companies are crowding the already-congested low Earth orbit (LEO) regime with small satellite mega constellations. With over 25,000 objects larger than 10 cm already in LEO, this rapid expansion is forcing us towards the enterprise on Space Traffic Management (STM). STM is an operational effort that focuses on conjunction assessment and collision avoidance between objects. While the equations of motion for objects in orbit are well-known, there are many uncertain parameters that result in the uncertainty of an object's future position. The force that the atmosphere exerts on satellite - known as drag - …

First Responders’ Assumptions: An Exploration Of Emergency Medical Technicians’ Secondary Traumatic Stress And Perceptions Of Substance Users, Glenn Noble

Graduate Theses, Dissertations, and Problem Reports (ETD)

Emergency medical technicians (EMT) and firefighters respond to critical incidents and provide emergent care. As the opioid crisis continues and drug overdose rates increase, first responders administer first aid to substance users, including Naloxone, more frequently. This study examined the influence of repeated exposure to drug-related critical incidents and provision of care to substance users on EMTs' and firefighters' secondary traumatic stress (STS) level, world assumptions, and substance use stigma. First responders' world assumptions, STS, burnout, and exposure to drug-related overdoses were analyzed for their power in predicting substance use stigma. Results suggest that occupational burnout, rather than STS, is …

Assessment Of Electronic Cigarette User Terminology And Knowledge Using Mixed Methods, Margaret G. Childers-Kakos

Graduate Theses, Dissertations, and Problem Reports (ETD)

Electronic cigarettes (ECIGs) have evolved rapidly over the past several years, and it is unclear if terminology used when assessing ECIG knowledge and use behavior has objective and well-understood definitions between consumers, as well as between consumers and the research community. The purpose of this study was to use semi-structured interviews to obtain a better understanding of ECIGs from the perspective of regular ECIG users. One-hour interviews consisted of both open- and closed-ended questions. Questions probed the terminology used by participants to describe both individual and combination device features, as well as ECIG use behaviors. Qualitative data was used to …

“Where Did Your Christ Come From”? Exploring The Significance And Prevalence Of The White Jesus Phenomenon Among Black Baptist Women And Men, Stephanie Marshelle House-Niamke

Graduate Theses, Dissertations, and Problem Reports (ETD)

Berger's theory of religion and world construction fails to consider the critical issue of power and who is allowed to construct their own reality and thus, does not adequately capture the experience of Black Christians and the Black religious experience. I use White Jesus as a case study to analyze this process. Though the White Jesus phenomenon has been more readily explored in theological and historical fields, very little sociological research discusses this phenomenon. I argue that a Europeanized Jesus has had harmful sociocultural effects on Black Christians and Black people, in the form of cultural trauma. Yet, the White …

Influences Of Disrupted Circadian Rhythms On Stroke Outcome, Jennifer A. Liu

Graduate Theses, Dissertations, and Problem Reports (ETD)

The circadian system is composed of a subset of temporal oscillators that function through a transcriptional and post-translational molecular and functional negative feedback loop cycling approximately every 24 hours. The central clock located in the suprachiasmatic nucleus is responsible for entrainment using light as the key timekeeper (zeitgeber); it is responsible for synchronizing and optimizing physiological behavior and function to the environment. Exogenous information, such as day length and light-dark cycles, provide critical temporal cues for adjusting to environmental conditions. Proper alignment to natural light dark cycles and circadian rhythms is optimal for vital health, fitness, and survival in organisms. …

Structure-Dependent Characterizations Of Multistationarity In Mass-Action Reaction Networks, Galyna Voitiuk

Graduate Theses, Dissertations, and Problem Reports (ETD)

This project explores a topic in Chemical Reaction Network Theory. We analyze networks with one dimensional stoichiometric subspace using mass-action kinetics. For these types of networks, we study how the capacity for multiple positive equilibria and multiple positive nondegenerate equilibria can be determined using Euclidian embedded graphs. Our work adds to the catalog of the class of reaction networks with one-dimensional stoichiometric subspace answering in the affirmative a conjecture posed by Joshi and Shiu: Conjecture 0.1 (Question 6.1 [26]). A reaction network with one-dimensional stoichiometric subspace and more than one source complex has the capacity for multistationarity if and only …

“Here Is The Place, My Lord”: The Scenic Design Process For King Lear, Abigail E. Wagner

Graduate Theses, Dissertations, and Problem Reports (ETD)

Undertaking the role of Scenic Designer of West Virginia University School of Theatre & Dance’s 2021 filmed production of King Lear by William Shakespeare was a formidable challenge. A detailed description of the entire scenic design process includes script analysis, research, design meetings, scenic art techniques, and the filming process. It illustrates the journey of what began as a series of renderings and models, transforming into the finalized version of the scenic design.

Mechanistic Insight Into Chronic Stress-Induced Cerebrovascular Dysfunction, Emily Nicole Burrage

Graduate Theses, Dissertations, and Problem Reports (ETD)

Despite decades of research psychological stress remains a prevalent problem in society, often diminishing quality of life and increasing the risk of developing dementia. The brain plays a central role in the response to stress and as it is unable to store energy substrates, the brain relies heavily on dynamically regulated blood flow. Therefore, it is important that there is a tight coupling between neural activity and cerebral blood flow to meet metabolic demands and maintain critical brain function. It has been established that chronic psychological stress has detrimental effects on cerebrovascular function, potentially through increased superoxide anion production through …

Examining Development And Function Of Pretectal Visual Neural Circuits In Gs Homeobox 1 Mutant Zebrafish, Alexandra Rose Schmidt

Graduate Theses, Dissertations, and Problem Reports (ETD)

Brain development requires a coordinated genetic code to regulate initial cell identity determination, migration, and connectivity, to establish function of neural circuits. Independent neural circuits underlie our ability to produce both complex and innate behavioral responses to sensory stimuli that are often conserved across vertebrate organisms. Sensory processing disruptions are associated with several neurodevelopmental disorders (NDDs). Therefore, gene mutations altering neurodevelopment can lead to changes influencing structure and function of individual neural circuits, causing behavioral deviations in sensory responsiveness. Crucial gene networks that define functional properties of sensory domains are often explored using non-mammalian vertebrate models, such as the zebrafish. …

Aging, A Pathological Factor In Neurological Injury, Aruvi Vijikumar

Graduate Theses, Dissertations, and Problem Reports (ETD)

One of the main reasons for CNS drugs to fail in clinical development is not considering age as a risk factor while studying chronic age-related neurological/neurodegenerative diseases in preclinical studies. We first set out to gain a comprehensive understanding of the impact of age on various aspects (anatomical, immunological, and biochemical) in rodents that play a key role in determining the onset, progression, and evolution of disease severity. With advancing age, the vascular structure and function are compromised which is hypothesized to accelerate cognitive decline. The initial step toward developing novel therapeutics is to characterize the age-related vascular modifications. Utilizing …

Review Of Innovative Rehabilitation Techniques For Reinforced Concrete Buildings, Demetrius Karoubas

Graduate Theses, Dissertations, and Problem Reports (ETD)

Building rehabilitation encompasses the act of repairing damaged structural elements, as well as the upgrading of older buildings to bring them up to modern standards. In recent years, due to the extreme economic and environmental cost of new construction, building rehabilitation is gaining ground as the most viable solution to the problem posed by damaged or substandard buildings. With the constant development of new materials with favorable properties and the improvement of our understanding of earthquakes, new rehabilitation techniques are being developed, improving on the efficiency and effectiveness of older ones. Reinforced Concrete (RC) buildings are a type of building …

A Narrative Inquiry Into The Influence Of School Shooting Survival On College Transition And Experience, Jayne M. Piskorik

Graduate Theses, Dissertations, and Problem Reports (ETD)

There is an extensive body of school-related shooting research exploring causes, how to recognize a threat, and what preparedness measures are effective (Lee et al., 2020; Muchert, 2007). However, there is insufficient research on how the broader context of school-related shootings in American society has influenced college-aged students. The purpose of this study was to tell the story of how students have been influenced by their experience surviving the 2018 Marjory Stoneman Douglas High School shooting during their transition to and performance in higher education. Narrative inquiry provided a deeper understanding through narrative retelling of the perceptions, decisions, and experiences …

Validity Evidence For The Male Depression Risk Scale-22 (Mdrs-22) In Younger And Older Adult Males, Montgomery T. Owsiany

Graduate Theses, Dissertations, and Problem Reports (ETD)

Men are two times less likely to be diagnosed with major depressive disorder than women. However, suicide rates are nearly four times higher in men than women, increasing to six times when comparing older men to older women. Given that affective disorders are present in most individuals who die by suicide, investigators have begun researching the possibility that depression presents differently in individuals who adhere to traditional masculine norms, leading to the conceptualization of masculine depression. Presently, one assessment for masculine depression shows strong reliability and validity evidence: the Male Depression Risk Scale-22 (MDRS-22). Despite burgeoning validity evidence for the …

It’S A Bleed: Pediatric Hemophilia And Length Of Stay, Rural Vs Urban Hospitals, Daniel G. Liedl

Graduate Theses, Dissertations, and Problem Reports (ETD)

Hemophilia is a rare genetic disorder that requires specialty care and treatment. Pediatric patients with hemophilia have unique medical issues that may lead to permanent disability or death if not properly diagnosed and treated in a timely manner. Due to lack of resources and proper training of staff, rural hospitals are not equipped to properly treat pediatric hemophilia patients. Utilizing the Healthcare Cost and Utilization Project (HCUP) Kids´ Inpatient Database (KID) of the Agency for Healthcare Research and Quality. I have found, across all hospital types, pediatric hemophilia patients have longer lengths of stay, 2.7 days for rural hospitals, 4.6 …

An Investigation Into The Mechanism Of Proteasome Dysfunction In Neurodegenerative Disease And The Biological Impact Of Proteasome Hyperactivation In C. Elegans, Raymond T. Anderson

Graduate Theses, Dissertations, and Problem Reports (ETD)

Aging is an inevitable process that occurs as humans grow older. It is characterized by the chronological accumulation of cellular damage over time leading to functional decline as an organism grows older. Several processes are thought to contribute to the aging phenomenon, but one of the most prolific of these is the disruption of protein homeostasis (proteostasis). The collapse of proteostasis can lead to accelerated aging and the development of age-related diseases including devastating neurodegenerative diseases (NDs) like Alzheimer and Parkinson disease. Virtually all NDs are characterized by the buildup of proteins in and around neurons resulting in neuronal death …

Characterizing The Effects Of Solvent And Analyte Properties On Ionization Efficiency By Novel Field-Free And Field-Enabled Ionization Techniques, Kinkini Udara Jayasundara

Graduate Theses, Dissertations, and Problem Reports (ETD)

In recent years the mass spectrometry (MS) area of field and/or direct analysis has grown dramatically. As a result, field-portable and miniaturized mass spectrometers, introduced only a few years ago, are proliferating. A highly desired feature for field-portable MS, or in-field analysis, is the ability to use ionization techniques requiring very little sample preparation as well as an ability to generate the ions under ambient conditions. Recently, a new ambient ionization technique termed vibrating sharp-edge spray ionization (VSSI) has been introduced which overcomes the field-portable limitations of other spray-based methods including the requirements for auxiliary components (e.g., nebulizing gas and …