Digital Commons Network^™

Evaluating Ramp Meter Wait Time In Utah, Tanner Jeffrey Daines

Theses and Dissertations

The purpose of this research was to develop an algorithm that could predict ramp meter wait time at metered freeway on-ramps throughout the state of Utah using existing loop detector systems on the ramps. The loop detectors provided data in 60-second increments that include volume, occupancy, and the metering rate. Using these data sources, several ramp meter queue length algorithms were applied; these predicted queue lengths were then converted into wait times by using the metering rate provided by the detector data. A conservation model and several variations of a Kalman filter model generated predicted queue lengths and wait times …

Outdoor Air Pollution And Psychological Well-Being: A Meta-Analysis, Jeremy Stanley Bekker

Theses and Dissertations

Human life takes place as part of a global ecosystem, meaning that human mental health is at least partially tied to the health of the planet. Health experts who seek to promote psychological well-being should consider how changes to the broad ecological system may impact their efforts. Given the potential impact of the environment on human well-being, we conducted a meta-analysis to assess the impact of air pollution on subjective well-being. The goal of this project was to outline the current state of the research on these constructs and provide a clear framework for what research is still needed. Nonsignificant …

A Case Study Of The History, Impact, And Political Reforms Of The Hope Scholarship In Georgia, Stephen Crawford Boyd

Theses and Dissertations

The qualitative bounded case study examined the HOPE Scholarship including the policy changes it went through since its inception and the impact HOPE has made on postsecondary education in Georgia. HOPE is the largest merit-based scholarship in the United States and is facing issues with funding for future scholars. This dissertation addressed its inception by Governor Zell Miller, the changes that it went through as issues arose, and the impact it has made on postsecondary education since 1993.

The problem addressed by this dissertation was there was a lack of longitudinal research data on the topics addressed in this dissertation. …

Mindfulness And Observational Drawing, Corinne Christopherson Sonderegger

Theses and Dissertations

Observational drawing has many benefits, yet it can be a difficult and frustrating curriculum for students and teachers alike. As I was teaching elementary and college art classes simultaneously, I noticed a significant discrepancy between my younger and older students. Students in my elementary art classes loved to draw and often expressed how excited they were to make art. However, students in my college art classes were more hesitant and self-conscious about drawing and did not believe they could progress artistically. Many of these students had abandoned drawing in elementary or middle school. This pattern evokes the U curve of …

A Survey-Based Analysis On Adult Community Esl Learners: Perceptions Of Challenges, Online Learning, Resources, And Skills, Adriana Reeve

Theses and Dissertations

"One thing cannot be disputed: immigrants from all backgrounds and levels of cultural capital are drawn to noncredit ESL programs with high hopes of a brighter future and the attainment of the American dream" (Becker 2011). Adult ESL community learners are a fast-growing and diverse group of individuals. Previous studies demonstrate the many challenges this group faces in attending English classes (Tan, Nabb, Aagard, and Kim 2010; Tucker 2007) and the need for more online learning to better meet their needs (Eyring 2014; Reynard 2003). A survey was administered to 136 adult community ESL learners enrolled at the Provo, Utah …

Psychometric Properties Of The Survey On Flourishing (Surf) In A Nationally Representative Adolescent Sample, Gus C. Salazar

Theses and Dissertations

Background: Adolescent subjective well-being is a topic that has gained significant focus over recent years. This focus is reflected in the formation of measurement tools and interventions used to better understand and improve adolescent mental health. While these are important steps, there still exist problems related to adolescent subjective well-being measurement. Notably, current measurement tools are limited in their content, applicability to various populations, and in their accessibility. Aims: The purpose of this paper is to examine the psychometric properties of the Survey on Flourishing (SURF) when used with a nationally representative adolescent sample. The SURF aims to address some …

The Role Of Bacterial Genotype In The Persistence Of The Microbiota Of Drosophila Melanogaster, Sarah J. Gottfredson

Theses and Dissertations

In this work we use the fruit fly Drosophila melanogaster as a model to identify bacterial genes that help bacteria to persist in their animal hosts. Early work on this model system established that dietary replenishment drives the composition of the D. melanogaster gut microbiota, and subsequent research has shown that some bacterial strains can colonize the fly for much longer than the flow of bulk diet through the gut. In this work we reveal that bacterial genes influence bacterial persistence by studying the correlation between bacterial genotype and persistence in the D. melanogaster gut microbiota. We performed an initial …

Witches, Victims, And Villains: #Metoo And The Political Polarization Of Sexual Violence, Hannah Shoaf

Theses and Dissertations

The MeToo movement, which sought to combat sexual violence, evolved into a partisan problem, where support for or against the movement fell across party lines. This polarization negatively impacted the progress of the MeToo movement, fitting the larger pattern of increasing polarization in the United States. My thesis seeks to understand the politicized nature of sexual violence and to explore what language and themes are drawn on to politicize conversations around sexual violence by using the MeToo movement as a case study. My thesis found that the political polarization of sexual violence increased during the MeToo movement (and especially during …

How Failures Cascade In Software Systems, Barbara W. Chamberlin

Theses and Dissertations

Cascading failures involve a failure in one system component that triggers failures in successive system components, potentially leading to system wide failures. While frequently used fault tolerant techniques can reduce the severity and the frequency of such failures, they continue to occur in practice. To better understand how failures cascade, we have conducted a qualitative analysis of 55 cascading failures, described in 26 publicly available incident reports. Through this analysis we have identified 16 types of cascading mechanisms (organized into eight categories) that capture the nature of the system interactions that contribute to cascading failures. We also discuss three themes …

Student Perspectives On Feedback In A Spanish Medical Interpreting Course, Allison Rebecca Brimhall

Theses and Dissertations

Medical interpreter education is a fast-growing field in which learners sometimes receive inadequate feedback to help them improve their interpreting skills (Sultanić, 2021). This qualitative study focused on students’ perspectives on the different types of feedback given in a university Spanish medical interpreting course. Interviews and written reflections were analyzed to investigate what students personally considered to be the outcomes of the class and how feedback given in the course was associated with their development of interpreting skills and self-efficacy. Students reported that they found the most meaningful improvement through (1) guided self-assessment to discover gaps in their abilities, (2) …

Parental Incarceration As A Predictor Of Legal Cynicism, Mackenzie Joy Heim

Theses and Dissertations

Researchers have established that legal cynicism is linked to violence, deviant behavior, and crime. In response to the potentially dangerous implications of a legally cynical society, research in recent years has attempted to identify experiences and conditions that play a role in the development of legal attitudes. Given that youths' familial and social conditions appear to be influential predictors, this study tests the relationship between parental incarceration and legal cynicism. Data from the Fragile Families and Child Wellbeing Study were used for this analysis. Results from three OLS regression models indicate that parental incarceration is not a significant predictor of …

A Permutation-Based Confidence Distribution For Rare-Event Meta-Analysis, Travis Andersen

Theses and Dissertations

Confidence distributions (CDs), which provide evidence across all levels of significance, are receiving increasing attention, especially in meta-analysis. Meta-analyses allow independent study results to be combined to produce one overall conclusion and are particularly useful in public health and medicine. For studies with binary outcomes that are rare, many traditional meta-analysis methods often fail (Sutton et al. 2002; Efthimiou 2018; Liu et al. 2018; Liu 2019; Hunter and Schmidt 2000; Kontopantelis et al. 2013). Zabriskie et al. (2021b) develop a permutation-based method to analyze such data when study treatment effects vary beyond what is expected by chance. In this work, …

Localized Heat Therapy Improves Mitochondrial Function In Human Skeletal Muscle, Erik D. Marchant

Theses and Dissertations

Physical activity results in various types of stress in skeletal muscle including energetic, oxidative, and heat stress. Acute exposure to stress impairs skeletal muscle mitochondrial function. In contrast, chronic intermittent exposure to mild stress through exercise training results in increased mitochondrial content and respiratory capacity. While oxidative and energetic stress have received much attention regarding their long-term effect on skeletal muscle mitochondria, heat stress is not well understood. The purpose of this work was to investigate the effects of localized heat therapy on human skeletal muscle mitochondria, and to compare these effects to those of high-intensity interval exercise training. To …

Inhibition Of Cell Adhesion And Actin Localization During Migration Upon Protective Antigen Mutant Ligand Binding To The Capillary Morphogenesis Gene 2, Sai Lun Lee

Theses and Dissertations

Capillary Morphogenesis Gene 2 protein (CMG2) is a type 1 transmembrane receptor known as the anthrax toxin receptor 2 (ANTXR2). While it is documented that the cell surface receptor CMG2 mediates anthrax toxin entry into the cell via endocytosis, the physiological role of CMG2 is not well understood. Others have suggested that CMG2 may have a role in mediating ECM homeostasis and angiogenesis. Additionally, both anthrax protective antigen (PA) and a furin protease-resistant mutant, PASSSR, inhibit corneal neovascularization in a mouse model, and interestingly PASSSR has a greater affinity to CMG2 receptor. PASSSRalso has a more potent antiangiogenic effect than …

Older Adults Home-Based Care In Cairo: Asset Mapping Towards Community Development, Yomna El-Taweel

Theses and Dissertations

The health and economic consequences of the rapid growth of the older adults’ population above 60 have led to new and more flexible forms of care, including home-based care. In Cairo, Egypt, there seems to be a high demand and preference for home-based care services over other care services like nursing homes. From a policy makers’ perspective, older adults’ needs are sometimes approached in a deficit-oriented way. This might contribute to the disempowerment of older adults and make them feel like people with needs that can only be met by external support. This mixed-method study aimed to contribute to the …

Settler-Author Allyship In Centering Indigenous Ecologies: Communal Will Through Collective Environmental Guilt In This Tender Land And Caleb's Crossing, Elena Marie Arana

Theses and Dissertations

The January 2021 edition of PMLA housed an entire cluster on "Indigenous Literatures and the Anthropocene," in which at least four of the eight non-Indigenous contributors directly addressed and supported a call for learning from and collaborating with Indigenous voices. The unanimity of the discussion dissolves somewhat drastically when considering exactly how this should be done, leading Melanie Taylor to voice one of the framing questions of the cluster: "If it is increasingly clear that not all members of Anthropos are equal drivers of the Anthropocene, and that not all are uniformly compromised by its havoc, how can we begin …

The Proposal For The Development Of A Minimal Viable Product (Mvp) Repository Website Containing Authentic Texts In Video Format For The Use Of Language Teachers In The Twenty-First Century, Rute Maria Baptista

Theses and Dissertations

This thesis project proposed the building of a website as a repository of authentic texts in video format for teaching foreign or second languages. The project planned the building of a minimal viable product or MVP with authentic videos both in English and Spanish, organized by the ACTFL levels with particular attention to the Intermediate level. Data were collected from a survey of 42 respondents in the United States and 89 combined from Spain and Mexico. The responses collected suggest that there is a need for this MVP. Additionally, the data indicated which features were most wanted by these teachers. …

Mutants, Sentinels, And Cerebro: Messages About Technology And Society In Science Fiction Films, Paige Marie Lee

Theses and Dissertations

Technology plays a significant role in society and in entertainment. People hold an ambivalent attitude about technology that is often illustrated in science fiction films. Much like myth telling stories to teach a lesson, science fiction films caution viewers of the effects of powerful technology usage in culture today. This thesis examines X-Men to show how relevant principles found in myth continue to be relevant to media consumption. Using media ecology to inform the reader about the technological environment (Mumford, 1944), this analysis of technology portrayed in X-Men shows the implications real world technology, such as radiation, weapons, and artificial …

Image Processing Algorithms For Detection Of Anomalies In Orthopedic Surgery Implants, Alexander William Wiese

Theses and Dissertations

Orthopedic implant procedures for hip implants are performed on 300,000 patients annually in the United States, with 22.3 million procedures worldwide. While most such operations are successfully performed to relieve pain and restore joint function for the duration of the patient's life, advances in medicine have enabled patients to outlive the life of their implant, increasing the likelihood of implant failure. There is significant advantage to the patient, the surgeon, and the medical community in early detection of implant failures.The research work presented in this thesis demonstrates a non-invasive digital image processing technique for the automated detection of specific arthroplasty …

Positive Psychology Interventions In An Sla Context: A Semester-Long Study Of The Impact Of Positive Psychology On The Well-Being And Language Development Of English Language Learners, Carolee Rogers

Theses and Dissertations

This article reports on a study investigating the effectiveness of positive psychology interventions (PPIs) in an Intensive English Program (IEP) for non-matriculated university students. Interventions based on the PERMA model for wellbeing (positive emotion, engagement, relationships, meaning, and accomplishment) were implemented through weekly 65-minute lessons and short daily activities. Each lesson introduced an aspect of the PERMA model such as positive emotion or achievement. Along with this focused instruction, students concurrently engaged in language learning activities. Teachers also provided short daily activities for reinforcement throughout the week. Six classes received these interventions, while three classes served as a control group …

Using Connections To Make Predictions On Dynamic Networks, Rebecca Dorff Jones

Theses and Dissertations

Networks are sets of objects that are connected in some way and appear abundantly in nature, sociology, and technology. For many centuries, network theory focused on static networks, which are networks that do not change. However, since all networks transform over time, static networks have limited applications. By comparison, dynamic networks model how connections between objects change over time. In this work, we will explore how connections in dynamic networks change and how we can leverage these changes to make predictions about future iterations of networks. We will do this by first considering the link prediction problem, using either Katz …

Less Of A Balancing Act And More Of A Juggling Act: How Women Who Work In Student Affairs And Have Children With Disabilities Navigate Their Dual Roles, Kellie Marie Mckinney

Theses and Dissertations

Student affairs professionals often grapple with how to attain proper work/family balance (WFB), as being a part of a helping profession can make it extremely difficult for these professionals to set limits and boundaries. In addition, successfully balancing one's work and family domains appears to be more challenging for parents that have children with disabilities than those with typically developing children. Unfortunately, there is a lack of literature examining how women who work in student affairs and have children with disabilities achieve WFB. As such, the purpose of this general qualitative study is to describe how women who work in …

Critical Incidents In Sustaining A Behavior Management Level System With Special Education Students In A Self-Contained School, Stephanie Johnson

Theses and Dissertations

Level systems provide systematic support for teachers and students who need additional behavior support. The purpose of this study was to evaluate the perspectives of faculty members from a self-contained school, for special education students with severe behavior needs, which has sustained the use of a school-wide, behavior management level system for nearly 30 years. A total of 11 faculty members were interviewed using the critical incident technique, a qualitative methodology used as an exploratory tool in early stages of research. Interviews detailed the observable behaviors and specific events, critical incidents, that helped or hindered the sustainability of their school's …

Community College Students' Sense Of Belonging And Care During Covid-19: A Grounded Theory Study, Lisa A. Dougherty

Theses and Dissertations

The purpose of this qualitative constructivist grounded theory research study was to understand and develop a theory about the experiences of community college students accessing online student support services, during the COVID-19 pandemic, when colleges were forced to close their in-person services. Interviews with seventeen students and a review of 57 email communications from the College yielded the data to construct a theory that extends the theories of sense of belonging and ethic of care to virtual student services – the Virtual Caring Campus Theory.

In the absence of a physical campus, colleges can create a virtual caring campus by …

Comparative Sequence Analysis Elucidates The Evolutionary Patterns Of Yersinia Pestis In New Mexico Over Thirty-Two Years, M. Elizabeth Warren

Theses and Dissertations

Yersinia pestis, a gram-negative bacterium, is the causative agent of plague. Y. pestis is a zoonotic pathogen that occasionally infects humans, and is endemic in the western United States. History gives evidence of three main plague pandemics. The first, originating in Egypt in 541AD, is known as the Justinian plague. The second, perhaps most well-known, is thought to have emerged in 1347AD in China, and is called the Black Death. The third, and current plague pandemic, also emerged in China in 1855. In 1899, Y. pestis was established in California, and the plague in other parts of America evolved from …

How She Sleeps At Night, Alexandra Malouf

Theses and Dissertations

How She Sleeps at Night is a collection of lyric poetry constellated around experiences of disability, trauma, and womanhood. A critical essay introduces the collection by elucidating the experiences and theoretical underpinnings that shaped the body of these poems. The introductory essay distills the principles that informed my cardinal poetic goals as I wrote: to create poems that can be read again and again over a lifetime, which connect with readers' common humanity, and which acknowledge the nuances and complexities of being alive.

Development Of Compact Phased Array Receivers On Rfsoc Prototyping Platforms, Jacob Bartschi

Theses and Dissertations

The continual increase of wireless technologies in the world has motivated the use of phased arrays to mitigate radio frequency interference (RFI). There are many methods of performing beamforming for RFI rejection, but they are traditionally physically large and complicated solutions. Phased arrays need to be shrunk and made cheaper for them to see widespread use. This work presents several compact phased array receivers for different applications. The first part of this thesis presents a software GPS processor for a digital beamforming GPS receiver. The receiver is small enough to be flown on drones and enables GPS signals to be …

The Influence Of Thc, Opioids, And Age On The Plasticity Of Excitatory Inputs To Ventral Tegmental Area Gaba Neurons, Isaac Brent Ostlund

Theses and Dissertations

Adults exhibit significant differences in drug vulnerability, learning ability, and emotive processing than adolescents. Long-lasting synaptic changes, including long-term depression (LTD), can endure many hours and are believed to be key to encoding memories and persistent cognitive changes such as addiction. The ventral tegmental area (VTA) is the primary source of midbrain dopamine (DA) and is regulated by local inhibitory GABA neurons. GABA regulation can decrease, resulting in dis-inhibition of DA neurons and increased feelings of reward, learning, or salience attachment to memories. Endocannabinoids (eCBs) are signaling molecules that often result in synaptic plasticity changes, and the eCB system has …

Effects Of Optical Configuration And Sampling Efficiency On The Response Of Low-Cost Optical Particle Counters, Brady Scott Hales

Theses and Dissertations

Hazards associated with air pollution motivate the search for technologies capable of monitoring individual exposure to gaseous pollutants and particulate matter (PM). A Low-cost Optical Particle Counter (OPC), costing less than 50 USD, is an example of such technologies. Currently, OPCs are widely used to measure the concentration of particle matter in ambient air. While these low-cost air quality sensors are widely available, the accuracy and precision of these devices is highly uncertain. Consequently, the purpose of this thesis is to present an analytical model of two generic, low-cost OPCs based on the Laws of Conservation of Mass, Momentum, and …

The Counterstories Of Black Women At Community Colleges: Understanding How Co-Curricular Involvement Helps Them To Persist, Karen A. Vaughan

Theses and Dissertations

The purpose of this qualitative research study was to add the voices and counter-stories of five Black women who attend community colleges to the discourse and literature concerning their co-curricular involvement experiences and persistence. I used critical race theory (CRT) as the theoretical framework to understand how involvement in co-curricular activities helps Black women at community colleges create support systems that allow them to overcome oppression and other forms of subordination and persist. Most studies that examine this phenomenon tend to use seminal student involvement theories that fail to account for the nuanced experiences and subordinate intersecting identities that Black …