Digital Commons Network^™

Less Water, More Holy: Tools For Sustainable Ablution, Faheem Khan

Theses and Dissertations

Prayer is an important part of life for many people, whether it takes the form of meditation or talking to God. Muslims pray five times a day, and before each prayer, they first clean themselves by performing ritual ablution (wudu). The eight-step purification process of wudu cleanses the body from head to toe. The Hadiths of Sahih al-Bukhari and Sahih Muslim tell us the Prophet Muhammad ﷺ needed just one mudd of water (650ml) to complete wudu, but most people consume many times that amount—four-to-seven liters is more common today.

To visualize and better understand the nature …

Use Of Passive Immobilization During Oral Conscious Sedation: Parental Perceptions And Utilization By Pediatric Dentists In The United States, Jennifer N. Levine

Theses and Dissertations

Use of Passive Immobilization During Oral Conscious Sedation: Parental Perceptions and Utilization by Pediatric Dentists in The United States, Levine J, Caudill, C (Virginia Commonwealth University School of Dentistry, Richmond, VA)

Research supported by the Alexander Fellowship

Purpose: To assess change in parental attitudes of passive immobilization after viewing an informational video and evaluate how pediatric dentists are currently using passive immobilization during oral conscious sedations (OCS).

Methods: A survey consisting of six statements on a 5-point Likert scale was completed by parents at their child’s OCS consultation appointment before and after viewing an educational video demonstrating benefits of passive …

The Effect Of Crowding On The Accuracy Of 3d Printed Aligners, Tonya Spangler

Theses and Dissertations

Purpose: To evaluate the accuracy of three-dimensionally (3D) printed aligners compared to conventional vacuum-formed thermoplastic aligners with varying levels of dental crowding.

Methods: Digital intraoral scans of 10 different cases were assigned to their respective groups (n=10, each, 30 total) as follows: no crowding (control), moderate crowding, and severe crowding. Using 3Shape software, digital aligner samples were created in standard tessellation language (STL) file format and randomly 3D printed. The same STL files of each case were also sent to a dental laboratory for the fabrication of vacuum-formed samples, which is the current technology used for manufacturing aligners. The intaglio …

Building A School Culture Of Success For Multilingual Learners: A Multiple Case Study Of Perspectives From Secondary School Leaders, John P. Marshall

Theses and Dissertations

The present study seeks to address achievement and opportunity gaps for Multilingual Learners (MLs) by studying secondary schools who have established a school culture that prioritizes ML support and success. It draws on existing literature in the fields of ML best practices, educational leadership, and school culture research to study case schools in order to distill from their lived experiences recommendation for practitioners. The author used a multiple case study methodology to delve into four case schools identified as exemplars of cultures for ML success. The author used in-depth qualitative interviews to find out if leaders in any secondary schools …

Associations Between Years Of Teaching Experience And Classroom Management Practices, Responsivenss, And Acceptability To A Coaching Intervention, Nicole M. Peterson

Theses and Dissertations

This study aimed to bridge the research-to-practice gap related to in-service supports and professional development by identifying factors associated with teacher use of evidence-based classroom management practices and responsiveness to a coaching intervention. Years of teaching experience was identified as a teacher-level intervention determinant with a strong research base in the classroom management literature; however few studies used direct observation of behavior to report difference among teacher behavior. This study used quantitative statistical methods to analyze data from a multi-year parent study investigating the effects of a coaching intervention (BEST in CLASS-Elementary) aimed at increasing the use of evidence-based practices …

Exploring Digital Equity Through Parent Perceptions Of Students’ Use Of 1:1 Devices: A Mixed Methods Approach, Joy Washington

Theses and Dissertations

Over the last two decades, 1:1 initiatives, in which each child in a school building is provided a school-issued device, have increased dramatically around the world. However, the outcomes of such programs are not always clear and studies regarding 1:1 one programs have found mixed results. It is important to ensure that1:1 initiatives are equitable and do not perpetuate the digital divide. Many studies exist that examine use of 1:1 devices in schools from a teacher or student perspective. However, only a few studies examine the experience of 1:1 initiatives from a parent perspective and also focus on equity. The …

Improving Feature Learning Capability And Interpretability Of Unsupervised Neural Networks, Chathurika S. Wickramasinghe Brahmana

Theses and Dissertations

The motivation for this dissertation is two-prong. Firstly, the current state of machine learning imposes the need for unsupervised Machine Learning (ML). Secondly, once such models are developed, a deeper understanding of ML models is necessary for humans to adapt and use such models.

Real-world systems generate massive amounts of unlabeled data at rapid speed, limiting the usability of state-of-the-art supervised machine learning approaches. Further, the manual labeling process is expensive, time-consuming, and requires the expertise of the data. Therefore, the existing supervised learning algorithms are unable to take advantage of the abundance of real-world unlabeled data. Thus, relying on …

Temporal Disambiguation Of Relative Temporal Expressions In Clinical Texts Using Temporally Fine-Tuned Contextual Word Embeddings., Amy L. Olex

Theses and Dissertations

Temporal reasoning is the ability to extract and assimilate temporal information to reconstruct a series of events such that they can be reasoned over to answer questions involving time. Temporal reasoning in the clinical domain is challenging due to specialized medical terms and nomenclature, shorthand notation, fragmented text, a variety of writing styles used by different medical units, redundancy of information that has to be reconciled, and an increased number of temporal references as compared to general domain texts. Work in the area of clinical temporal reasoning has progressed, but the current state-of-the-art still has a ways to go before …

Graduate School's Transformative Awakening: An Arts-Based Autoethnography, Roxanne L. Brown

Theses and Dissertations

This is an autoethnographic journey of a 30-year veteran art teacher through graduate school during the 2016 presidential campaign, election, presidency, #MeToo movement, a global pandemic, Black Lives Matter (BLM), virtual teaching and grading during a pandemic. My narrative includes an account of my transformative academic, social, and personal experiences and how they have informed my teaching practice. They include a collection of visual representations I created during my graduate school journey.

The Value Of Educating Teachers, Coaches, And Athletic Trainers On The Management Of Dental Trauma., Laura Satoski

Theses and Dissertations

Purpose: The aim of this study is to investigate the baseline knowledge and assess the benefit of educating teachers, coaches, and athletic trainers about the management of sports-related dental injuries.

Methods: Teachers, coaches, and athletic trainers working in youth sports activities across the city of Richmond and the Greater Richmond Region were recruited via email. Participants answered a pre-seminar survey to evaluate their baseline knowledge and determine whether they experienced dental trauma with their athletes previously. The survey also indicated whether they participated in a public or private sports facility. The participants watched a pre-recorded virtual seminar educating them on …

The Abuse Liability Profile Of An Unflavored, Sucralose-Sweetened, Electronic Cigarette In Combustible Cigarette Smokers, Sarah F. Maloney

Theses and Dissertations

The purpose of this study was to examine the effects of sucralose and nicotine in otherwise unflavored PG/VG ECIG liquid solutions, via a 30-watt ECIG, using multiple measures predictive of abuse liability to provide a basic understanding of the effects of sweeteners and perceived sweetness on ECIG abuse liability in reference to combustible cigarettes. Fourteen dependent smokers completed five independent study sessions that were within-subject, Latin-square ordered, and were identical in regards to all aspects but the product used. In each session, participants were given either their own brand of cigarettes or one of the four ECIG conditions: 0 mg/mL …

The Civil Right To Belong: A Case Study On Immigrant Integration Of Muslim Students In Educational Institutions, Mamoona H. Siddiqui

Theses and Dissertations

Constitutional equal protection values serve as social integration policies for new Americans and generations that follow. They promise equal opportunity, fair treatment, protection from unlawful discrimination, and freedom to preserve cultural identities in their new communities. However, in times of national security crises and political polarization, the disjuncture in the way equal protection doctrines have been historically implemented often reflect deep-rooted inequities that impact underrepresented communities. American Muslims are one such community in which members have experienced anti-Muslim and anti-immigrant sentiment particularly after 9/11 and political polarization on immigration and civil rights policies. The study explores the equal protection doctrine …

Childhood Reliquary De Una Catracha/Mexi Entre Nopales, Juliana Bustillo

Theses and Dissertations

Childhood Reliquary De Una CatrachaMexi Entre Nopales is a multisensory based installation consisting of three large and six medium scale mixed media paintings with performance. It is informed by my upbringing in Boyle Heights in the projects during the 90s, followed by East LA in the mid 2000s. It is the reliquary for my discomfort in institutional spaces and why I have found comfort in dystopian-like installations. This is the landscape in which I exist, regardless of where I am now. It is where I place my work. It is the context in which I celebrate the powerful delicacy of …

Peri-Implantitis Incidence And Effect Of Supportive Periodontal Therapy On Outcomes: Retrospective Cohort Study, Michael Ha

Theses and Dissertations

Purpose: Management of peri-implantitis is becoming an increasing component of dental practice. Dental implants can develop peri-implantitis lesions which occur in a non‐linear and accelerating pattern compared to a gradual periodontitis lesion. It is crucial to diagnose and treat this disease early, or ideally prevent it. Contemporary implants have a rough surface texture which is difficult to properly decontaminate as a crucial component for treatment prognosis. Evidence on the long-term effects of Periodontal implant maintenance therapy (PIMT) on implants is limited. This study aims to investigate the effect of periodontal maintenance on peri-implant tissue health.

Methods: A retrospective chart review …

An Exploration Of Differences In Veteran Suicidality, Philip A. Weisbrod

Theses and Dissertations

Suicide is an important issue of public health, with Veteran suicide being a somewhat unique sub-populous at high risk. This research aims to explore the factors involved in Veteran suicidality that may raise or lower one’s risk. This analysis was conducted with the National Survey for Drug Use and Health (NSDUH) 2020 (N=1173) dataset through use of Binary Logistic Regression (BLR). The analysis showed that having a Major Depressive Episode (MDE) in the past year was the greatest predictor of increased suicidality, while marriage was the strongest buffer by decreasing the likelihood of suicidality increasing. Being a War on Terror …

Detailing The Genetic And Environmental Influences Shared Between Conventional And Electronic Cigarette Use Across Measures Of Initiation And Past 12-Month Use, James Clifford

Theses and Dissertations

Introduction. Tobacco use is a public health crisis with nearly 500,000 Americans suffering premature mortality attributable to tobacco use in 2014. New development efforts have created new nicotine delivery systems whose health consequences are not yet fully understood such as electronic cigarettes (ECIG). It is possible there are shared genetic and environmental factors that influence an individual’s liability to initiate cigarette (CIG) or ECIG use, as both systems are designed to deliver nicotine.

Methods. Four study designs were used to resolve the genetic and environmental influences that underlie CIG and ECIG initiation. A twin study, scoping review, genome-wide association study …

The Lived Experiences Of Higher Education Academic Advisors With Counseling Degrees In Addressing Their Role In Student Success, Shajuana Isom-Payne

Theses and Dissertations

The purpose of this research study was to examine the lived experiences of academic advisors with a counseling degree in addressing their role in student success. If student retention rates are not addressed, higher education institutions are at risk of losing students, which is costly to the institution and the student (Himes, 2014). Most college students are in a state of change and need academic advising support to achieve success during a college transition (Tinto, 2012). Academic advisors can assist students in finding the right career for students’ specific strengths. Academic advisors with counseling degrees address advising through the lens …

Estimating Weighted Panel Sizes For Primary Care Providers: An Assessment Of Clustering And Novel Methods Of Panel Size Estimation On Electronic Medical Records, Martin A. Lavallee

Theses and Dissertations

Primary Care is on the frontlines of healthcare, thus they see the most diverse set of patients. In order to achieve high functioning primary care, a practice must establish empanelment, the pairing of patients to providers. Enumeration of empanelment, or estimating panel sizes, helps ensure that the demands of the patients demand the supply of providers and optimize the balance of primary care resources to improve quality of care. Further we can adjust panel sizes by using patient-level data on healthcare utilization and complexity extracted from the electronic medial record to determine the amount of care or burden of work …

Machine Learning (Ml) - Assisted Tools For Enhancing Security And Privacy Of Edge Devices, Santosh Kumar Nukavarapu

Theses and Dissertations

The rapid growth of edge-based IoT devices, their use cases, and autonomous communication has created new challenges with privacy and security. Side-channel attacks are one of the examples of security and privacy vulnerabilities that can cause inference at Internet-Service Provider (ISP) and local Wi-Fi networks. Such an attack would leak user’s sensitive information such as home occupancy, medical activity, and daily routines. Another example is that these devices have weak authentication and low encryption standards, making them an easy target for malware-based attacks such as denial of service or launching other network attacks using these infected devices. This thesis dissertation …

Mathematical Models Of Infection Prevention Programs In Hospital Settings, Kelly A. Reagan

Theses and Dissertations

Hospitals play a vital role in providing for the healthcare needs of a community. Patients can develop hospital-acquired infections (HAIs) during their hospitalization due to exposure to foreign bacteria, viruses, and fungi. Infection prevention programs target and reduce HAIs, but implementing the infection prevention programs often comes with a cost. The goal of my research is to use mathematical models to quantify the impact of infection prevention programs on cases of HAIs and total healthcare costs. First, I use a Markov chain model to quantify how one infection prevention program reduces general HAIs in the hospital. Then, I calculate the …

A Novel Approach To Reducing Adiposity Among Young Men, Jean M. Reading

Theses and Dissertations

Background

Lifestyle intervention is the first line treatment for obesity. Yet, young men are underrepresented in lifestyle interventions, which is posited to be the result of unmet needs and overall low concern for weight management. The aims of this dissertation are to:

Papers 1 and 2: Test the preliminary efficacy, feasibility, and acceptability of a self-guided lifestyle intervention for young men.

Paper 3: Explore the behavioral and physiological factors associated with changes in adiposity among young men and women enrolled in a more intensive lifestyle intervention.

Results

Papers 1 and 2: The self-guided intervention produced modest weight …

Improving College Students’ Views And Beliefs Relative To Mathematics: A Systematic Literature Review Followed By A Multiple Case Mixed Methods Exploration Of The Experiences That Underpin Community College Students’ Attitudes, Self-Efficacy, And Values In Mathematics, Marquita H. Sea

Theses and Dissertations

Mathematics is particularly important due to its relevance in our daily lives. It is a general requirement throughout schooling. Unfortunately, many students openly declare negative views/beliefs regarding math in their personal and academic lives. These in turn, negatively influence students’ achievement related behaviors and outcomes. First, a systematic literature review was conducted to determine what types of studies/initiatives have aimed to enhance students’ views/beliefs relative to mathematics, including domain general and specific perceptions of math as well as their judgements of who is successful in mathematics and if they themselves can be successful. Specifically, the review centered on the components …

Synthesis And Modeling Of Manganese Ferrite Nanoparticles For Magnetic Hyperthermia Applications, Margaret E. Thornton

Theses and Dissertations

Biologically targeted magnetic hyperthermia (MH) is a promising cancer therapeutic that is both non-invasive and has the potential to serve as a single-modality cancer treatment. MH operates through the elevation of temperatures between 40-43 °C to induce apoptosis in malignant tumor cells, while the small size of the magnetic nanoparticles preserves the healthy surrounding tissue. At present, MH is limited by low heating efficiency and heterogenous outcomes, and treatment requires direct-injection of the nanoparticles, excluding deep-tissue and metastatic tumors from the therapy. The most popular candidates for MH are the spinel ferrites iron oxide and manganese iron oxide (MFO). These …

Processes Underlying Black American College Students’ Mental Health: Examining The Roles Of Mental Health Literacy, Ethnic-Racial Identity, And Mental Health-Related Behaviors, Chloe Walker

Theses and Dissertations

Addressing the mental health of college students is a persistent and increasing priority (Auerbach et al., 2018), especially among Black American individuals. Given prevalent mental health disparities, it is critical to understand the association between Black American emerging adults’ mental health literacy (MHL) and mental health outcomes including promotive mental health-related behaviors (MHRBs) and symptoms (i.e., anxiety and depressive symptoms), and the modifiable underlying factors that inform them. Guided by the Theory of Planned Behavior (Ajzen, 1991) and the Identity-based Motivation theory (Oyserman & Yoder, 2007), the present study aimed to examine the relation between mental health literacy and mental …

Family Relationships And Academic Performance Via Belongingness Among Cuban Medical Students: Examining Family Legacy And Sex As Moderators, Maria J. Cisneros-Elias

Theses and Dissertations

Medical diplomacy is a foundational part of Cuban domestic and foreign policy (Feinsilver, 2010). Cuba has an abundance of doctors, encouraged by the country’s free medical education program (Hand et al., 2020), and has made a significant impact with its well-established healthcare system, provision of healthcare for all of its citizens, and healthcare support internationally. The current study aims to focus on processes underlying Cuban medical students’ academic performance, as they are a critical component of this successful system, and a population that has received limited empirical attention. Thus, the current study used path analyses to examine the relations between …

Antiviral Effects Of Metalloshielding: Differential Antiviral Activity Of Polynuclear Platinum And Cobalt Compounds, Mary Zoepfl

Theses and Dissertations

The majority of antiviral drug development has focused on virus-specific discovery targeting discrete steps in the individual life cycles. Although great strides have been made for a number of clinically relevant diseases such as human immunodeficiency virus, influenza virus, and hepatitis B, broad spectrum antivirals do not exist. Broad spectrum antivirals would offer (1) treatment for viruses without specifically-targeted antivirals, (2) treatment for viruses which have developed resistance to their available treatments, and (3) a rapidly deployable treatment option in viral epidemics. Many viruses including human cytomegalovirus (HCMV), HIV, and SARS-CoV-2. rely on heparan sulfate (HS), a highly sulfated glycosaminoglycan …

Removal Of Prefabricated Zirconia Crowns From Primary Anterior Teeth With Er,Cr:Ysgg Laser Compared To A High-Speed Handpiece: An In- Vitro Study, Andrew Crowell

Theses and Dissertations

Purpose: The aim of this study was to compare the time and pulpal temperature changes associated with the removal of prefabricated zirconia crowns from primary anterior teeth using an Er,Cr:YSGG laser compared to a rotary hand-piece.

Methods: This in-vitro study was conducted using extracted primary incisors. Teeth were prepared and restored with prefabricated zirconia crowns (NuSmile^®, Houston, TX, USA) sizes 4 and 5 cemented with resin-modified glass-ionomer cement. Restored teeth were stored in a humidor for at least 48 hours prior to removing crowns from the teeth using either an air-rotary hand-piece (HG, N=17) or erbium, chromium: …

Challenges Among Latine Daca Recipients And Anxiety: A Systematic Meta-Analytic Review, Isis A. Garcia-Rodriguez

Theses and Dissertations

Immigrant-origin Latine young adults (ILYAs) face a challenge that is specific to their developmental period. As ILYAs transition from high school to beyond (e.g., workforce, college, etc.), they begin to grapple with participating in normative experiences for all young adults in the U.S. (e.g., obtaining a driver’s license, getting their first job at 16). The lives of ILYA, particularly those who are DACAmented or DACA eligible, are characterized by the legal and social contradiction that arises from growing up in the U.S. yet facing barriers to full participation in U.S. society. The nonexistent synthesis of the exponentially growing literature in …

Exploring Dynamic Navigation For Palatally Impacted Canine Uncovery Surgery., Daniel Joseph Hall

Theses and Dissertations

Purpose: The objective of this study was to compare the exposure/uncovery of palatally impacted canines via the use of dynamic navigation guidance to the traditional freehand approach. Outcomes evaluated include the time to plan and perform exposure, area/size of initial access to locate the impacted tooth and the final size of the osteotomy to completely uncover the impacted tooth.

Methods: In order to simulate various frequently encountered clinical scenarios, three different model types were used. Six plastic models of each model type were fabricated from epoxy resin. Each model contained 2 bilaterally, palatally impacted canines, that were randomly embedded in …

Empowerment In Adolescents And Young Adults With Cystic Fibrosis, Rachel Holder

Theses and Dissertations

Adolescence and young adulthood is a pivotal time for individuals with cystic fibrosis (CF) that is characterized by increased self-management, transition to adult-oriented healthcare, and often a decline in treatment adherence and health-related quality of life (HRQoL) (Abbott et al., 2015; Modi et al., 2008). The literature regarding which factors are important for readiness to transition, treatment adherence, and HRQoL is limited in this population. However, empowerment has emerged as a salient construct in other disease groups (Acuña Mora et al., 2019; Burström et al., 2019; Kaal et al., 2017). As such, this thesis determined the convergent validity of the …