Digital Commons Network^™

Predictive Modeling The Impact Of Engineered Products In Dynamic Sociotechnical Systems: An Agent-Based Approach, Christopher S. Mabey

Theses and Dissertations

The impact of engineered products is a topic of increasing concern in society. The impact of a product can fall into the categories of economic, environmental, or social impact; the last category is defined as the effect of a product on the daily lives of people. Design teams lack sufficient tools to help improve the impact of products and understand the impact of products at scale in society. This dissertation aims to provide insight and methods for improving the social, environmental, and economic impact of engineered products. The majority of the research focuses on the prediction of product impacts on …

Evaluating The Feasibility Of Bioenergy Production From Single And Mixed Beverage Waste And Sewage Sludge Through An Integrated Hydrothermal Liquefaction-Anaerobic Digestion System, Oluwayinka Michael Adedeji

Theses and Dissertations

Beverage waste and sewage sludge are two of the most generated waste-based biomasses. Recent interest in the hydrothermal liquefaction (HTL) of these wastes pointed to the generation of a byproduct of high dissolved organic carbon [also called aqueous co-product (ACP)]. However, ACP is being discarded which not only increases the environmental footprints of the HTL process but also results in reduced bioenergy potential. Hence, anaerobic digestion (AD) is touted as an effective utilization process of ACP for further bioenergy recovery. This study evaluated the feasibility of producing bioenergy (biocrude and biomethane) from the combination of beverage waste and sewage sludge …

Know Better, Do Better?: Parental Financial Socialization's Indirect Association With Couple Financial Communication Through Financial Self-Efficacy, Rachel M. Okamoto

Theses and Dissertations

Emerging adults find themselves in a time of great transition, especially related to finances and relationships. This study used a sample of 1,950 U.S. emerging adults currently in romantic relationships to investigate the role that parent financial socialization plays in the financial communication for emerging adult couples. This study also investigated if financial self-efficacy, in part, explained this association. Parent financial socialization was found to be positively associated with couple financial communication. In addition, financial self-efficacy was found to partially mediate this relationship. Individuals whose parents taught them effectively regarding finances had higher levels of self-efficacy regarding finances and had …

This Too Shell Pass: Investigating The Function Of B Cells During An Immune Response In The Red-Eared Slider, Trachemys Scripta, Christen Renee Fairow

Theses and Dissertations

B cells are crucial components of the immune system during an infection that produce antibodies. It is not known how B cells function or if different cell subsets exist in reptiles. Understanding how B cells function in reptiles can help protect endangered species by clarifying how their immune system may be different from other vertebrates but may also allow for the development of new human medicines. First, we aimed to identify turtle leukocytes based on their morphological characteristics. Blood smears were made and photos were taken on a light microscope equipped with a digital camera. Using this method, we were …

Interpreting Communally: How Service Learning Impacts Interpreting Proficiency, Breanna Michele Jones

Theses and Dissertations

Experiential learning programs, such as service learning, help students in Spanish medical interpreting classes to increase their interpreting proficiency, which includes their cultural understanding, linguistic performance, and professionalization (Rudvin & Tomassini, 2011). Currently, the Spanish Medical Interpretation class at Brigham Young University uses a community service-learning project in which students volunteer six hours of their time interpreting within the community. While largely beneficial, not all community partners offer the same learning opportunities. Some include training and shadowing programs, while others do not. This thesis seeks to determine the impact that shadowing opportunities and community partnerships have on interpreting proficiency and …

The Use Of Point Cloud Data To Support Concrete Bridge Deck Condition Assessment, Issa Nidal Al Shaini

Theses and Dissertations

Bridge deck condition assessments are typically conducted through visual physical inspections, utilizing traditional contact sensors for Non-Destructive Evaluation techniques such as hammer Sounding and chain dragging which require the expertise of trained inspectors. However, the accuracy of these inspections is limited by the level of deterioration of the bridge deck, as the ability of the inspectors is proportional to the apparent level of damage. This study aims to improve the accuracy of bridge deck inspection processes by utilizing non-destructive evaluation techniques, including the analysis of point cloud data gathered via Light Detection and Ranging (LiDAR) as a geometry-capturing tool. The …

A Rhetorical Analysis Of Motivational Speeches In Sports Films, Brenna Seeman

Theses and Dissertations

This paper applies Aristotle's historic modes of persuasion, namely ethos, logos, and pathos, to the motivational speeches found in 20 popular sports films. Through this analysis, major themes concerning how coaches utilized persuasive tactics were found and used to compile a list of important characteristics of motivational speeches. This initial analysis found pathos to be the most effective form of persuasion among motivational speeches in sports films. Because of this finding, a deeper analysis took place with five of the speeches, focusing specifically on how the visual, sound and other thematic elements contributed to the overall pathos of those rhetorical …

The Effects And Reversibility Of Combination Inhaled Corticosteroids On Phonation Threshold Pressure (Ptp) And Phonation Threshold Flow (Ptf) In Ex Vivo Rabbit Larynges, Melanie Elizabeth Blauer

Theses and Dissertations

Although combination inhaled corticosteroids (ICs) are known to cause voice disorders in otherwise vocally healthy individuals, it is unknown whether those adverse effects can be reversed by the cessation of treatment. Quantitative aerodynamic measures such as phonation threshold pressure (PTP) and phonation threshold flow (PTF) can be used to identify the development of, and recovery from, vocal pathologies. We examined the effects and reversibility of ICs on laryngeal aerodynamics. This study was a mid-project investigation as part of a larger ongoing project. The 18 larynges were from rabbits that received ICs, a control condition, or no treatment. Experimental group rabbits …

Exploring Posttraumatic Growth In Aphasia: A Qualitative Investigation, Camille Williams

Theses and Dissertations

This study explored posttraumatic growth (PTG) in people with aphasia and is the qualitative arm of a larger mixed-methods study. After an initial experimental session, 23 people with aphasia (PWA; 12 females and 11 males) completed a 60-minute semi-structured interview during which participants expanded on previously-given questionnaire responses and then answered five additional open-ended questions about communication in their daily life. Interviews were transcribed orthographically and coded using reflexive codebook analysis. A stakeholder with aphasia was consulted to gain insight from an insider's perspective about whether codes and themes captured the experiences of aphasia. Reflexive codebook analysis revealed two themes. …

Understanding The Experiences Of Mothers Of Children With Stunting In Two Egyptian Communities Focusing On The First 1000 Days, Rana Abdelgawad

Theses and Dissertations

Introduction: Egypt’s stunting prevalence is 13% with multiple initiatives and programs tackling child malnutrition. While many of them are promising, not all address the child’s first 1000 days, in addition to missing the cultural aspect for the Egyptian population which affects their dietary practices and health seeking behaviors.

Goal: Determine what challenges mothers face for their child’s nutrition and what learnings from exemplars countries can help Egypt reduce the malnutrition and stunting problem

Aim: Finding insights about the factors influencing child nutrition during 1st 1000 days and what programs can be implemented based on successful past experiences in exemplar countries. …

The Reversibility Of Effects Of Combination Inhaled Corticosteroids On Sustained Phonation Pressure And Flow In Ex Vivo Rabbit Larynges, Elisabeth Barlow

Theses and Dissertations

The purpose of this thesis is to investigate the reversibility of the adverse effects of combination inhaled corticosteroids (ICs) on vocal fold health as part of a five-year study. This pilot study tested the hypothesis that the adverse effects of ICs may be induced and then reversed, using a benchtop model and rabbit larynges measuring sustained subglottic pressure and airflow. Eighteen rabbits were assigned randomly to 5 subgroups, including baseline, induction experimental, induction control, reversibility experimental, and reversibility control. Baseline rabbits did not receive any treatment. Both experimental groups, induction and reversibility, were administered Advair until visual-perceptual ratings were noted. …

Non-Tuberculous Mycobacterium Correlation With Geochemical Characteristics Of Soil And Basalt In Hawaii, Leeza Marie Wells

Theses and Dissertations

Non-tuberculous mycobacteria (NTM) cause opportunistic lung disease though environmental exposure pathways. Among the United States, Hawaii has a significantly higher infection rate. Preliminary studies have shown certain environmental factors, such as phosphorus and other select soil geochemical characteristics, to be statistically significant to NTM occurrence. However, a model to predict NTM occurrence based on soil geochemistry had yet to be attempted. A selection of 40 NTM positive and 40 NTM negative soils from Oahu were selected for a geochemical analysis to search for possible correlations to mineralogy and elemental abundances that may promote, or inhibit, NTM growth in the environment. …

Microaggressions That Students From Underrepresented Groups Experience In Communication Sciences And Disorders, Samantha Berryhill

Theses and Dissertations

This study explored microaggressions that underrepresented students in Communication Sciences and Disorders experience. Phase I included a survey that was sent out to 276 undergraduate and graduate students at one university with 14 questions. Students were asked to identify with demographic variables, rate their sense of belonging, and discuss microaggressions they had experienced. Phase II comprised of individual interviews with six participants that further explored their experience as an underrepresented student in Communication Sciences and Disorders. Interviews were transcribed and coded using a content analysis. Across the two phases, quantitative, mixed-method, and content analyses were completed. Interviews were transcribed and …

Neurodivergent College Students And Therapy Dogs In Higher Education, Georgia Jean Majka

Theses and Dissertations

The purpose of this study is to examine neurodivergent students in higher education and their experience with The Shreiber Family Pet Therapy Program at Rowan University to investigate whether therapy dogs reduce anxiety levels and provide relaxation. In addition, this study provides recommendations for The Shreiber Family Pet Therapy program at Rowan University to promote the program and its purpose on campus. These resources are important when discussing the neurodivergent student population in higher education, which this research study discusses, based on previous research and the results found from this quantitative approach. This study also makes recommendations for Rowan University …

Perceptions Of Tattoos And Piercings In Higher Education, Diane Elizabeth Duncan

Theses and Dissertations

This study attempts to examine the perceptions of faculty and staff at Rowan University towards professionals with visible body modifications (VBM), specifically tattoos and piercings, in higher education. Five main research questions were addressed: (i) What are the attitudes towards professionals with VBM at Rowan University? (ii) How might the display of VBM affect Rowan University’s values and objectives? (iii) How are professionals with VBM perceived by hiring managers at Rowan? (iv) In what ways do perceptions differ across campus units at Rowan University regarding professionals with VBM? (v) What kind of environment does staff and faculty at Rowan University …

Case Study: Reading Multicultural Literature To An Emergent Reader In The Home, Kiyna Twisdale

Theses and Dissertations

This case study was conducted to find what happens when a parent reads multicultural books to their young child at home. The qualitative data collected was used to determine the child’s reactions to the similarities and differences between them and the characters, as well as how multicultural books can be used to address sensitive topics and complex themes in the home. A caregiver, the researcher, collected data from read aloud sessions with her five-year old daughter. After reading seven multicultural books together, the research found that the child was able to make simple and concrete connections with the physical appearance …

The Rise Of Right-Wing Populism And Foreign Aid In Electoral Democracies: The Case Of Us Trump, Ahmed Hamdy

Theses and Dissertations

Populism has always been controversial in academia despite being undertheorized. The 21st century has witnessed a global trend of the rise of right-wing populism in electoral democracies that led to major consequences including regional disintegration as the case with Brexit in Europe and rising anti-multilateralism in the United States under the Trump administration. Whereas academic literature attempted to scrutinize correlation between the rise of populism and its effect on foreign policy, the literature on populism and foreign aid is quite scarce. This study aims to appraise the rise of right-wing populism on foreign aid in electoral democracies, focusing on the …

Investigating Eco-Evolutionary Interactions Between Hosts And Members Of Their Gut Microbiota, Logan A. Sauers

Theses and Dissertations

Evolutionary and ecological interactions between hosts and their associated microbial communities, their microbiota, and between members of these communities are vital to understand. Microbial communities are widespread across diverse host taxa and hosts receive a variety of well-documented benefits from their microbial communities. Despite the importance of understanding eco-evolutionary dynamics for colonization outcomes and the benefits these communities provide to their hosts, our current knowledge in this area remains incomplete. For example, we do not know the full extent of coevolution and specific relationships between hosts and microbes, and between the microbes themselves, across host taxa. Questions remain about how …

Transition Planning And The School To Prison Pipeline: A Phenomenological Study Investigating The Lived Experiences Of Alternatively Placed High School Black Males With High Incidence Disabilities, Brandon Garrett Thornton

Theses and Dissertations

The purpose of this qualitative study was to better inform researchers and practitioners on best practices to ensure that their transition planning practices are person-centered and culturally responsive. Using a phenomenological approach, purposeful sampling was used to conduct semi-structured interviews regarding the shared educational lived experiences of two alternatively placed Black high school males with high incidence disabilities with respect to their transition planning. Participants perceived their transition planning to be student-centered, and expected favorable employment outcomes. Additionally, the participants’ choice to be alternatively placed played a role in their perception of transition outcomes. School personnel also played a pivotal …

Mediators Of The Insomnia-Suicidality Association, Zach Simmons

Theses and Dissertations

Rationale: The severity of insomnia symptoms, including difficulty falling asleep and returning to sleep when awakened in the night, are major risk factors for more severe suicidality including suicidal ideation, suicide attempts, and death by suicide. As a modifiable risk factor, insomnia is a potential target for suicide prevention. There are several commonly observed gaps in the literature studying the association between insomnia and suicidality including little exploration of potential mediators, limited assessments of insomnia and suicidality, and a lack of sample diversity and representativeness. As such, the models that explain the association between insomnia and suicidality remain unclear and …

Adolescent's Perceptions Of The Parent's Marital Relationship And The Impact On Their Suicide Risk, Savannah Heaton Hurt

Theses and Dissertations

Suicide risk is rapidly increasing in children and adolescents. It is vital that research explores the causes in child and adolescent suicide risk. Research has failed to identify if the marital relationship may be correlated with this increase in suicide ideation in children. This study set out to determine if a child's perception of their parents' marital conflict impacts the child's suicidal risk. Using the Family Foundations of Youth Development project this study analyzed 1,692 parent and child participants to test if the child's perceptions of the marital conflict impacted their suicide risk and if the parent's own report of …

Proportionality V. Categorization: The Issue Of Judicial Balancing Of Rights, Akram Mohamed

Theses and Dissertations

The fact that there is a constant conflict between individual rights and state or social interests has historically provoked the question of how to balance or harmonize such conflicting interests? On what basis shall the legislator or the judge decide in favor of this or that right in his legislation or judgement? Where shall we, for example, draw the line between the right to freedom of expression and the right to protect one’s honor and reputation? How could the legislator find the compromise between the state duty to protect fetus life and its obligation not to interfere with woman’s right …

Computational Study On The Acoustic Footprint Of Stenosis In Larger Arteries, Ahmed Abdelnabi

Theses and Dissertations

We identify a new (acoustic) frequency-stenosis relations whose frequencies fall within the recommended auscultation threshold for stethoscopy (< 120 Hz) in this study. We demonstrate that these relations can be used to extend the application of phonoangiography (the measurement of the degree of stenosis from bruits) to stethoscopes that are broadly available. The First relationship is successfully identified using an analysis limited to the acoustic signature of the von Karman vortex street, which we automatically isolate using a metric based on an area-weighted average of the Q-criteria for the post-stenotic region. Specifically, we conduct LES-CFD simulations on simplified 2D internal flow geometries that represent blood vessels with varying degrees of stenosis. Then, using the Ffowcs Williams-Hawkings (FW-H) equation, we extract their emitted acoustic signals, which we subtract from a pure signal (stenosis-free) at the same heart rate. Next, we transform this differential signal to the frequency domain and meticulously classify its acoustic signatures according to six stenosis-invariant flow phases of a cardiac cycle. Using our Q-criterion-based metric, we then automatically restrict our acoustic analysis to the noises emitted by the von Karman vortex street (phase 4). Our analysis of its acoustic signature demonstrates a strong linear relationship between the degree of steno- sis and its dominant frequency, which differs significantly from the break frequency and heart rate (previously identified dominant frequencies). For the Second relationship, we develop a frequency-stenosis scaling law for particularly supravalvular aortic stenosis that falls within the preferred frequency range (30-120 Hz) for echocardiography. We expand to 3D patient specific geometry using Simulia’s Living Heart Human Model (LHHM), which has an anatomically accurate aorta geometry. This LHHM geometry is modified with stenoses ranging from 30 to 80 percent (moderate to severe). For physiologically consistent hemodynamic boundary conditions, we expand the study to employ the Windkessel model, which has been implemented on Fluent using UDF. We demonstrate that physiological boundary conditions reduce simulation time significantly compared to static boundary conditions. The FW-H model extracted the flow-generated acoustic signal of the stenotic geometries and analysed it at clinically relevant receiver locations. A preferred receiver location consistent with clinical practise is determined, and a correlation between the degree of stenosis and the prevalent acoustic frequency (within the frequency range of 70-120 Hz) is established. The obtained second scaling law is shown to be clinically reliable in assessing stenotic severity. Future research will investigate incorporating the vibroacoustic role of adjacent organs and tissue to expand the clinical applicability of our findings. Expansion of clinical and numerical datasets will be pursued in future research to enhance the reliability of our scaling law, possibly by leveraging much-needed ML-based acceleration schemes.

Enhancing Construction Safety Training Of Bridges Using Augmented Reality And Virtual Reality, Mohamed Sherif Elrifaee

Theses and Dissertations

Infrastructure development projects are widely acknowledged as some of the most complex and challenging projects to undertake. The construction of bridges, in particular, has proven to be a significant safety risk for workers, with a considerable number of accidents reported on construction sites. There is a lack of comprehensive training programs specifically designed for bridge construction safety, and only a few studies have explored the use of both AR and VR to enhance safety training in construction. As such, this research aims to improve the safety of bridge construction sites through the implementation of Augmented Reality (AR) and Virtual Reality …

Examining The Determinants Of Timeliness In Crises Policy Responses: The Case Of Covid-19 In Egypt, Abdelhalim Abdalla

Theses and Dissertations

Timely responses to crises and pandemics play a significant role in navigating and minimizing the adverse impacts of such critical periods on the public and governments worldwide. COVID-19 could show and prove how a single virus originating in a single country can rapidly spread throughout the world, transforming an epidemic in China into a global pandemic. The virus caused more than 6.5 million deaths and around 660 million confirmed cases worldwide, according to the WHO, and sparked the worst economic catastrophe globally in more than a century, as estimated by the World Bank. Evidence suggests that the extent of the …

Exploring Senior Chemical Engineering Students’ Approach To Process Safety Decision Making, Jeffrey Saunders Stransky

Theses and Dissertations

Despite investments in chemical process safety education, evidence suggests that engineers’ decision making may contribute to process safety incidents. Currently, limited educational endeavors in process safety decision making exist, raising the need for a better understanding of how to prepare chemical engineering students for industry decisions. This dissertation fortifies current process safety education through three studies involving senior chemical engineering students. Study One developed the Engineering Process Safety Research Instrument (EPSRI) through exploratory and confirmatory factor analyses. Educators may use the EPSRI to evaluate their students’ moral development. Study Two evaluated a digital process safety game, Contents Under Pressure, on …

Estimating The Impact Of Intersection Traffic On Air Quality Emissions At Camden Cooper Medical Health Intersection Through The Integration Of Vissim/Moves Models, Kourtney Nicole Arena

Theses and Dissertations

Traffic emissions near intersections can increase significantly due to idling as well as stop-and-go traffic conditions. Increased emissions of pollutants like particulate matter (PM), nitrogen oxides (NOx), carbon monoxide (CO), and polycyclic aromatic hydrocarbons (PAHs) found in traffic exhaust deteriorate the health of the population that is exposed to them. Since general traffic emissions are increased by the stop-and-go conditions produced at intersections, PAH traffic emissions should also increase from intersection driving conditions. The intersection of Dr. Martin Luther King Jr. Blvd and Haddon Ave in Camden, NJ was identified as an ideal site to study PAH traffic emissions. To …

Catecholamine System Function Of The Medial Prefrontal Cortex Following Repetitive Mild Traumatic Brain Injury And The Use Of Benzoyl Chloride To Quantify And Identify Neurotransmitters, Leah Horvat

Theses and Dissertations

Traumatic brain injury (TBI) is a serious global health burden that causes a wide range of neurocognitive symptoms. These cognitive processes are regulated by catecholamine signaling within the prefrontal cortex (PFC) region of the brain. To quantify functional deficits in catecholamine signaling after TBI, norepinephrine (NE) and dopamine (DA) levels within the PFC were quantified from microdialysate samples using high-performance liquid chromatography coupled with electrochemical detection. A method for benzoyl chloride derivatization of neurotransmitters and analysis with liquid chromatography and tandem mass spectrometry instrumentation was also developed to detect and analyze these neurotransmitters. Overall, it was found that catecholamine signaling …

How Female Bipoc Students At A Predominantly White Institution Think About Belonging: A Multiperspective Study, Delirio Juarez

Theses and Dissertations

Black, Indigenous, and People of Color (BIPOC) students at predominantly White institutions (PWIs) report decreased sense of belonging compared to White students (Hunn, 2014; Hurtado & Carter, 1997; Museus et al., 2018; Strayhorn, 2019). The study aimed to answer, "What are the daily lived experiences of BIPOC students at a PWI?" and "How do BIPOC students at a PWI describe feelings of belonging (if at all)?" The study was conducted at a private, religiously affiliated, PWI, in the Western United States. The University Belonging Questionnaire (Slaten et al., 2018) was used to sort students' feelings of belonging. Female participants who …

"I Think They're Poisoning My Mind": Understanding The Motivations Of People Who Have Voluntarily Adopted Secure Email, Warda Usman

Theses and Dissertations

Secure email systems that use end-to-end encryption are the best method we have for ensuring user privacy and security in email communication. However, the adoption of secure email remains low, with previous studies suggesting mainly that secure email is too complex or inconvenient to use. However, the perspectives of those who have, in fact, chosen to use an encrypted email system are largely overlooked. To understand these perspectives, we conducted a semi-structured interview study that aims to provide a comprehensive understanding of the mindsets underlying adoption and use of secure email services. Our participants come from a variety of countries …