Digital Commons Network^™

Incorporating Ontological Information In Biomedical Entity Linking Of Phrases In Clinical Text, Evan French

Theses and Dissertations

Biomedical Entity Linking (BEL) is the task of mapping spans of text within biomedical documents to normalized, unique identifiers within an ontology. Translational application of BEL on clinical notes has enormous potential for augmenting discretely captured data in electronic health records, but the existing paradigm for evaluating BEL systems developed in academia is not well aligned with real-world use cases. In this work, we demonstrate a proof of concept for incorporating ontological similarity into the training and evaluation of BEL systems to begin to rectify this misalignment. This thesis has two primary components: 1) a comprehensive literature review and 2) …

Modification Of Culture Medium And Identification Of Microbial Contaminants For Improved In Vitro Propagation Of Freshwater Mussels, Raquel M. Wetzell

Theses and Dissertations

In vitro propagation efforts play an essential role in conserving and restoring threatened freshwater mussel populations by circumventing the need for a fish host. Across a broad range of taxa, transformation is induced with an artificial M199 medium and rabbit serum. However, such formulation may not be sufficient in culturing critical species with more specific physiological requirements. In this study, multiple serum mixtures were tested to improve in vitro transformation of two freshwater mussel species: yellow lampmussel (Lampsilis cariosa) and tidewater mucket (Atlantaconcha ochracea). These species were selected because they parasitize similar fish host species but …

Biotic Characteristics Of Managed And Unmanaged Coastal Dunes In The Outer Banks, North Carolina, Andrew E. White

Theses and Dissertations

Under future climate change and sea level rise scenarios, Natural and Nature-Based Features (e.g., dunes) that protect coastal habitat and infrastructure will be exposed to increased wave energy and storm surge. Understanding how these forces will impact coastal dunes is necessary for their continued use as protective features. Coastal dunes develop through feedback between vegetation and sediment deposition, a process complicated by species-specific growth rates and responses to burial. Wave flume studies have tested the effects of dune vegetation on erosion and found multiple plant organs across several functional types to be important for resisting erosion. Although dune building and …

Using Individual Determinants To Predict Behavioral Health Service Use In Integrated Pediatric Primary Care, Alfonso L. Floyd Jr.

Theses and Dissertations

Mental health problems (e.g., attention, externalizing, internalizing) are commonly observed in youth and are often associated with significant impairment and an increased need for mental health services. Conceptual frameworks, such as Andersen’s Behavioral Model of Health Service Utilization, have proposed that several individual determinants (e.g., predisposing, enabling, and need factors) may influence service use for mental health problems among youth. Despite the glaring need for mental health treatment among youth with mental health problems, studies indicate that many affected youths do not receive mental health care. Integrated pediatric primary care (IPPC) settings provide an ideal setting for youth and families …

Do Coverage Expansion And Patient-Centeredness Care Delivery Improve Patient Health Outcomes And Care Quality?, Shiva Salehian

Theses and Dissertations

Although correlated, improvement of patient health outcomes and quality of care is a result of health care delivery, performance, and healthcare policies that intend to impact health outcomes (Porter, 2010; AHRQ, 2015). This dissertation focuses on a special model of care delivery (Patient-Centered Medical Homes (PCMH)) and two programs (Addiction and Recovery Treatment Services (ARTS) and Medicaid expansion) to examine the correlation and impact of these programs on cardiovascular-related preventive care, healthcare expenditures, and health behavior hospitalizations as patient outcomes.

Artificial Intelligence-Powered Chronic Wound Management System: Towards Human Digital Twins, Salih Sarp

Theses and Dissertations

Artificial Intelligence (AI) has witnessed increased application and widespread adoption over the past decade. AI applications to medical images have the potential to assist caregivers in deciding on a proper chronic wound treatment plan by helping them to understand wound and tissue classification and border segmentation, as well as visual image synthesis.

This dissertation explores chronic wound management using AI methods, such as Generative Adversarial Networks (GAN) and Explainable AI (XAI) techniques. The wound images are collected, grouped, and processed. One primary objective of this research is to develop a series of AI models, not only to present the potential …

Structure-Based Drug Discovery And Development Of Protein Structure Prediction Tools Using An Empirical Force Field, Noah B. Herrington

Theses and Dissertations

Traditional drug discovery has rapidly accelerated thanks to development of computational molecular modeling. The crucial component that these computational studies hinge upon is having a well-defined, and energetically favorable structure. Structures of proteins and ligands that meet these criteria are important for accurately simulating models used to study drug binding. To demonstrate the role of accurate structure simulation in the study of these events, this thesis presents, first, a story examining the problem of accurate structure modeling of ionizable residues within protein structures, specifically aspartic acid, glutamic acid, and histidine. I present our method, which uses the HINT force field …

Secondary English Teachers’ Experiences Of Agency: Connections To Shifting Educational Contexts During Covid-19, Kristina Lee

Theses and Dissertations

The COVID-19 pandemic caused schools around the world to enter uncharted territory. Due to the unprecedented nature of the educational crisis, it was important to examine how teacher agency may have been affected. Teacher agency can have important implications for school climate, policy, and the experience of stakeholders. The main focus of this study was to cultivate an understanding of secondary English teachers’ perceptions of agency as they navigated teaching throughout the COVID-19 pandemic. An ecological framework was used to examine teachers’ experiences of agency in the context of COVID-19. The study utilized a basic qualitative design with in-depth interviews …

Assessing Medical Discrimination, Mistrust, And Healthcare Engagement As Predictors Of Covid-19 Vaccination Among Transgender And Gender Diverse Individuals, Shelby A. Smout

Theses and Dissertations

As of March 11^th 2020, the World Health Organization (WHO) declared COVID-19 a global pandemic. Early studies conducted among LGBT+ communities indicated that individuals of color and transgender individuals were more likely to express hesitation towards a possible COVID-19 vaccine. Such hesitation can be explained by historical medical mistreatment of people of color and LGBT+ communities which contributes to higher medical mistrust within these populations. The present study assessed vaccination behaviors among a sample of transgender and gender diverse individuals (N=385) and results indicated an association amongst experiences of discrimination in healthcare, medical mistrust, COVID-19 mistrust, barriers to vaccination, …

“There Was Some Sort Of Missing Middle”: Lived Experiences Of Jewish Youth With Intellectual And Developmental Disabilities, Aliza Lambert

Theses and Dissertations

Though religion and spirituality contribute to overall well-being (Koenig, 2012; Koenig & Cohen, 2002), social support (Biggs & Carter, 2016; Koenig & Cohen, 2002; Taub & Werner, 2016), quality of life (QOL; Myers & Sweeney, 2000), coping strategies (Krok, 2008), and lower rates of depression and anxiety (Brown et al., 2013; Young et al., 2000), religion and spirituality are seldom included in curriculum in counselor education and supervision doctoral programs (Adams et al., 2015; Henriksen et al., 2015). In the present study, the researcher uses a multiple-case study design to describe the lived experiences of Jewish youth with intellectual and …

Self- And Socially-Regulated Learning In Middle School Science Classrooms: A Multiple Case Study, Lauren Cabrera

Theses and Dissertations

Students must employ self-regulated learning (SRL) and socially-regulated learning (soRL) in the science classroom, which includes a wide array of independent and collaborative learning activities. However, little is known about how student SRL and soRL co-occur in students’ learning and how the classroom teacher influences that regulation in situ (Cabrera et al., in preparation; Panadero et al., 2015). This explanatory, sequential case study analyzes classroom video data from six middle school science classrooms. The study uses an integrated coding scheme that captures SRL and soRL behaviors, soRL modes, and targets of regulation (Greene & Azevedo, 2009; Hadwin et al., 2018; …

Development And Optimization Of A Low Volume Air-Jet Dry Powder Inhaler (Dpi) Platform For The Delivery Of High Dose Aerosolized Powder To Infants, Connor Howe

Theses and Dissertations

The goal of this research project was to develop an infant air-jet dry powder inhaler (DPI) platform for high-efficiency nose-to-lung (N2L) aerosol administration to infants through optimization of individual system components followed by expansion of the system to higher doses and different formulations using a new approach. Primary challenges associated with aerosol delivery to infants using the N2L route include the extremely narrow extrathoracic airways, short inspiratory times (~0.2 sec), low safe airway pressure (H₂O), and very low volumes of air (~10 mL) available to form the aerosol. The infant air-jet DPI system was comprised of three main …

Special Education Teacher Retention: The Importance Of Teacher Working Conditions, Erica Ross

Theses and Dissertations

Teacher retention, or why teachers stay, is an important area of study considering the impact teacher attrition and turnover can have on student outcomes (Hirsch & Emerick, 2006). Teacher attrition and turnover are even more concerning for those that are special education teachers (SETs), and it is noted as a priority to address in the state of Virginia (Solenson et al., 2018). Through an adapted organizational theory lens, this study addresses the following aims: 1) Determine if there are differences in perceptions of teacher working conditions (TWCs) between special education teachers (SETs) and teachers of other content areas and 2) …

Authenticity, Care, And Relationships: Ethical Decision-Making In Criminal Justice Education, Robert B. Lehmann

Theses and Dissertations

Many events in recent history have demonstrated the need for addressing the training of law enforcement and other public servants commonly referred to as criminal justice professionals in the United States. Reckoning with the imperfect history of the criminal justice system, specifically the history of problematic relations with marginalized people, and developing a system that is better equipped to meet the needs of an equitable and just society is at the forefront of many discussions of criminal justice reform. Improving ethical decision-making training in criminal justice education is one avenue to addressing these needs for current and future professionals. Conceptually, …

An Analysis Of The Special Focus Facility Program And Nursing Home Quality, Annie S. Rhodes

Theses and Dissertations

The Special Focus Facility Program is an intensive program meant to rapidly support 88 of the lowest quality nursing homes in the United States, as determined by the Five-Star Quality Ranking system. There are also 435 facility candidates which are similarly low performing but not enrolled in the program. Academic literature has largely ignored this program, and the existing grey literature is more than a decade old and does not include COVID-19 data. Applying a political economy of aging framework and using a case matching methodology, Special Focus Facilities (SFF), Special Focus Facility Candidate (SFFc) nursing homes, and 5-star nursing …

Behavioral Screening And Chiral Bioanalysis Of Emerging Stimulant-Type Drugs In Rats, Tyson R. Baird

Theses and Dissertations

The epidemic of drug use in the United States and elsewhere in the world has resulted in tragic loss of life and substantial economic costs. Novel psychoactive substances (NPS) are one of the contributors to this problem, and the lack of information about many of these drugs compounds their risk. This dissertation proposes a strategy to use intracranial self-stimulation (ICSS) as a behavioral screening tool to assess emerging drugs of abuse for their abuse potential in order to generate a proactive threat assessment. A series of stimulant-type drugs including methcathinone, α-pyrrolidinohexanophenone (α-PHP), cocaine, and the phenyltropane analogs of cocaine WIN35428 …

Sleep Self-Efficacy, Loneliness, And Physical Activity: Assessing The Pathways Between Sleep Quality And Mental Health Using Structural Equation Modeling, Amber M. Fox

Theses and Dissertations

Although there is robust empirical support that poor sleep contributes to declines in mental health, explanations of this relationship remain unclear. The purpose of the present study was to examine the pattern of associations between sleep quality, sleep self-efficacy, loneliness, physical activity, and mental health among U.S. adults across the lifespan, and whether they differed by gender or age group. A structural equation model with invariance analysis was developed and examined data from 2,300 adults (M_age = 44.1, SD = 16.78) participating in the online study Investigating Sleep Longitudinally Across Normal Development (ISLAND). Sleep quality was measured by …

Examination Of Common And Rare Variant Genetic Architecture Of Psychiatric Disorders, Mohammad Ahangari

Theses and Dissertations

Psychiatric disorders are often heterogenous in their manifestation and genome-wide association studies have identified many common risk variants involved in their polygenic architectures with varying degrees of pleiotropy. In recent years, large-scale biobanks have also begun sequencing the genome of their participants to elucidate the role of rare risk variation in the genetic architecture of complex phenotypes, including psychiatric traits. This dissertation sought to better understand the role of both common and rare risk variation in the genetic architecture of psychiatric disorders with a particular focus on schizophrenia and alcohol problems. In the first three analyses, we focused on characterizing …

Smart City Management Using Machine Learning Techniques, Mostafa Zaman

Theses and Dissertations

In response to the growing urban population, "smart cities" are designed to improve people's quality of life by implementing cutting-edge technologies. The concept of a "smart city" refers to an effort to enhance a city's residents' economic and environmental well-being via implementing a centralized management system. With the use of sensors and actuators, smart cities can collect massive amounts of data, which can improve people's quality of life and design cities' services. Although smart cities contain vast amounts of data, only a percentage is used due to the noise and variety of the data sources. Information and communication technology (ICT) …

Training Needs And Challenges In Supporting Young Adults With Autism To Access Integrated Employment, Whitney A. Ham

Theses and Dissertations

The purpose of this study was to conduct a needs assessment identifying the current level of training, training needs, and challenges to supporting adults with autism and significant support needs, such as challenging behavior, to access integrated employment. Foundational literature in employment indicates that employment service providers must possess an expansive skillset in order to perform the expectations of their profession. Research on supporting adults with autism to access employment indicates that skills above the traditional employment skills may be needed in order to obtain and maintain employment. This was one of the first studies to assess the needs of …

Effects Of A Video Based Intervention On Job Interview Skills Of Youth With Autism, Kelsey T. Dunn

Theses and Dissertations

In this dissertation, I conducted a multiple-probe-across-participants design to examine the impact of a video-based intervention on interview skills of youth with autism. First, I conducted a systematic literature review of interview interventions. Results were used to guide the development of this study’s measure and procedures. Finding that previous literature relied on rubric measures to rate interview skill behaviors, I developed and piloted a primary measure for examining direct speech production. Using transcripts and video analysis, this study captures the construct of interview skills using both quantity (frequency of relevant/irrelevant c-units) and quality (interview skills rubric score). The intervention consisted …

Disparities Between Native Americans And Whites In Trajectories Of Functional Independence And Life Satisfaction Over The 5 Years After Traumatic Brain Injury, Jack Watson

Theses and Dissertations

A traumatic brain injury (TBI) can have a host of negative consequences including impairments to motor and cognitive function and can result in a decrease in quality of life (i.e., life satisfaction). TBI is one of the leading causes of death and disability worldwide and disproportionately affects Native Americans, who have the highest rates of TBI among all races in the U.S. and elevated likelihood for fatality and severe complications. The current study used a subsample of the national TBI Model Systems Database of 80 demographically and injury severity matched Native American and White individuals (total n = 160) to …

Reds For Ed: Class Struggle In The Classroom, Patrick E. Korte

Theses and Dissertations

Utilizing the methodology of participant observation combined with semi-structured interviews, this ethnographic study aims to analyze the socio-historical development of the Richmond chapter of the Virginia Caucus of Rank-and-file Educators (VCORE), a left-wing opposition group inside the Virginia Education Association (VEA). This study aims to assess VCORE’s politics, origins, growth, transformation, organizational structure, and cultural practices, focusing upon the role VCORE members played in the lead-up to and aftermath of the 2020-2022 campaign to reinstate collective bargaining rights of public education employees in Richmond.

Role Of Inhibition And Spiking Variability In Ortho- And Retronasal Olfactory Processing, Michelle F. Craft

Theses and Dissertations

Odor perception is the impetus for important animal behaviors, most pertinently for feeding, but also for mating and communication. There are two predominate modes of odor processing: odors pass through the front of nose (ortho) while inhaling and sniffing, or through the rear (retro) during exhalation and while eating and drinking. Despite the importance of olfaction for an animal’s well-being and specifically that ortho and retro naturally occur, it is unknown whether the modality (ortho versus retro) is transmitted to cortical brain regions, which could significantly instruct how odors are processed. Prior imaging studies show different …

Computational Analysis Of Drug Targets And Prediction Of Protein-Compound Interactions, Sina Ghadermarzi

Theses and Dissertations

Computational prediction of compound-protein interactions generated a substantial amount of interest in the recent years owing to the importance of the knowledge of these interaction for drug discovery and drug repurposing efforts. Research suggests that the currently known drug targets constitute only a fraction of a complete set of drug targets, limiting our ability to identify suitable targets to develop new drugs or to repurpose current drugs for new diseases. These efforts are further thwarted by our limited knowledge of protein-drug (and more generally protein-compound) interactions, where only a subset of drug targets is typically known for the currently used …

Putting The "Video" Back In Video Games: Opportunities And Challenges For Visual Studies Approaches To Video Game Analysis, Francis A. Longaker

Theses and Dissertations

I argue for the application of visual studies in video game analysis. This approach presents opportunities for the intersectional analysis of video game visuals as games are brought into dialogue with other visual media like film and painting. This approach also presents challenges due to ontological distinctions between different media as well as due to academic divisions regarding the study of different art and media objects. Despite the challenges presented, a visual studies approach is particularly useful as a critical window into contemporary visual culture at large.

I outline the fields of game studies and visual studies, marking their distinctions …

Family History Of Substance Problems Among African Americans: Associations With Drug Use, Drug Use Disorder, And Prescription Drug Misuse, Rebecca Mahrs-Gould

Theses and Dissertations

Background: Understanding individual risk for substance use and substance use disorders is important in the efforts of reducing risk and prevention of these problems. A family history of alcohol and/or drug problems often increases the risk for these problems, however the majority of research in this area is conducted in samples that are predominantly White. African Americans face disparate outcomes from substance use and substance use disorders, and the risks for substance problems may not be the same as for Whites. A systematic review of the literature identified nine studies that examined a family history of either substance problems or …

Black Hearts Matter: A Comparative Study Of Sociodemographic, Clinical, And Psychosocial Characteristics In Black And White Persons With Heart Failure, Hannah M Anderson Hughes

Theses and Dissertations

Heart failure (HF) is a chronic, progressive, debilitating illness that disproportionately affects Black individuals, often leading to poor quality of life (QOL). Various sociodemographic, clinical, and psychological characteristics are related to QOL in patients with HF. Because most studies do not include representative Black samples or report findings from racial subgroup analyses, these relationships and any existing racial differences are not well understood. The purpose of this descriptive, comparative study was to explore the relationships among sociodemographic, clinical, and psychological characteristics and QOL in patients with HF and to determine if there were racial differences between Black and White individuals. …

Pharmacists' Role In Opioid Use Disorder And Overdose Prevention And Treatment And Their Attitudes And Perceptions Towards Distributing Naloxone Under A Standing Order, Stephen C. Ijioma

Theses and Dissertations

Background: Opioids are a class of drugs that bind to opioid receptors (mu, delta, and kappa), located in the central and peripheral nervous systems, to exert responses such as analgesia, respiratory depression, euphoria, and miosis. The opioid epidemic is characterized in large part by an increase in opioid overdose deaths. Community pharmacists are one of the most accessible healthcare professionals who frequently interact with patients and can implement OUD and opioid overdose prevention strategies. Treatment for opioid overdose and OUD include naloxone for overdose deaths as well as medication-assisted treatment for OUD.

Objective: The specific aims of this thesis include …

What Motivates Saudi Females' Intentions To Get Mammography? A Randomized Control Trial To Evaluate Effective Preventative Messages, Saleh Bin Khulayf

Theses and Dissertations

Background. In Saudi Arabia, breast cancer mortality is a public health concern where females often discover breast cancer at an advanced stage due to ignoring preventative testing such as mammography. While increasing mammography awareness is essential in Saudi Arabia, almost nothing is known about the effectiveness of health communication messages in mammography's context. This research tested whether exposure to Entertainment-Education (E-E) message or educational infographic messages would influence Saudi females' intentions to get mammography.

Method. This research relied on a randomized control trial among n=240 Saudi females older than 40. Respondents were randomly assigned to watch YouTube E-E message or …