Digital Commons Network^™

The Relationship Between Adverse Childhood Experiences And Juvenile Offender Typology, Aliza Beth Lipman

Dissertations and Theses

Approximately 1 in 5 girls and in 20 boys in the United States are victims of child sexual assault every year. Child sexual assault can lead to multiple negative short term and long-term impacts affecting general health, mental health, interpersonal relationships, socio-economic status, criminal behavior and more. Prevention research focuses on a thorough understanding of the perpetrators of assault and the context surrounding offenses in order to reduce and prevent assault. Within this research, juvenile offenders are perceived as a single homogenous group whereas adult offenders are consistently specified based on offender and offense characteristics. The exploration of the relationship …

Corporatizing Violence: Targeted Repression Of Indigenous Dissent In Democratic States, Laikaika Layne Rivera

Dissertations and Theses

This thesis explores state repression of disruptive protests against private development projects in democracies. Using a mixed methods approach, including logistic regression and case studies, the research identifies key factors influencing repression. Indigenous leadership, fragmented public opposition, and private elite influence increase the likelihood of violent repression. The findings suggest that when public resistance is insufficient against powerful private interests, coercive institutions resort to violent strategies to quell disruptions and signal increased costs for future dissent. State repression is more likely when the protest movement is comprised of Indigenous groups than compared to those of the general public. The study …

A Survey Of North American Electric Bicycle Owners, Cameron Steven Bennett

Dissertations and Theses

Rapid recent growth in the popularity of electric bicycles (e-bikes) has captured the attention of transportation researchers and policymakers seeking safe, sustainable, and active alternatives to conventional transportation modes. This thesis presents an investigation of e-bike owners in North America, complementing previous efforts in 2013 and 2017, and suggests implications for North American transportation planning.

An online survey was distributed to e-bike owners in the United States and Canada through email outreach, purchase incentive programs, and social media. The survey included questions on the respondents’ demographics, e-bikes, purchase decisions, travel behavior, perceptions of e-bikes, crash experience, maintenance needs, and receipt …

Comparison Of Conventional And Adaptive Acoustic Beamforming Algorithms Using A Tetrahedral Microphone Array In Noisy Environments, Megan Brittany Ewers

Dissertations and Theses

In situ acoustic measurements are often plagued by interfering sound sources that occur within the measurement environment. Both adaptive and conventional beamforming algorithms, when applied to the outputs of a microphone array arranged in a tetrahedral geometry, are able to capture sound sources in desired directions and reject sound from unwanted directions. Adaptive algorithms may be able to measure a desired sound source with greater spatial precision, but require more calculations and, therefore, computational power. A conventional frequency-domain phase-shift algorithm and a modified adaptive frequency-domain Minimum Variance Distortionless Response (MVDR) algorithm were applied to simulated and recorded signals from a …

Teaching In A Kenyan Refugee Camp: A Critical Ethnography Of The Impact Of Teacher Preparation And Cultural Experience On Pedagogy, James Adiok Mayik

Dissertations and Theses

This research involved an investigation of the classroom experiences of formally unprepared refugee teachers in Kakuma Refugee camp. The purpose was to understand how refugee teachers with no preservice preparation in accordance with the standards of Kenya Teacher Service Commission (TSC) perceive and interact with pedagogical content knowledge (PCK) and cultural relevancy in their daily classroom experiences with students in a refugee camp-based school in Kenya. What informed this study was the view that refugee teachers bring with them their respective and diverse cultural knowledge--ontology, epistemology, and axiology. To gain better understanding of the experiences and perspectives of these educators, …

Understanding The Other: Mentor Ethnocultural Empathy And Relationship Quality And Duration In Youth Mentoring, Miriam Miranda-Diaz

Dissertations and Theses

Given the positive youth outcomes associated with participation in mentoring programs, there is growing interest to explore factors associated with mentoring relationship quality and duration in formal youth mentoring programs. In comparison to the majority of volunteer mentors, many young people participating in formal mentoring programs are of a racial-ethnic minority group and tend to be economically disadvantaged. This study investigates factors associated with these socio-cultural background differences between mentors and mentees. More specifically, this study investigates the association between a mentor's level of ethnocultural empathy, as reflected in empathic perspective-taking and acceptance of cultural differences, and the quality and …

Queer Rural Youth Online: A Digital Ethnography, Joseph Robert Burns

Dissertations and Theses

This thesis is based on digital ethnographic fieldwork conducted in 2023 within Queer subcommunities on the social media sites Reddit and Twitter (now known as X) and data collected from interviews with Queer rural youth members of these communities. The data reveal that social media use directly influences the lives and actions of Queer rural youth, who use the space to build social connections, shape their personal identities, and seek advice pertaining to their in-person lives and decisions. By using these spaces, Queer rural youth build both bonding and bridging social capital, learn to subvert restrictions to their Internet access, …

It Takes A Village: An Examination Of Social Relationships And Mental Health, Em Francis Trubits

Dissertations and Theses

Social relationships are impactful to mental health and well-being, both positively and negatively. Different sources of support vary in their ability to meet our needs and ultimately influence our well-being. While research has examined aspects of supportive and harmful social relationships and mental health, much of this work is cross-sectional or limited to a single source of support. This dissertation aimed to better elucidate the relationship between social relationships and mental health by integrating multiple theoretical perspectives and multiple sources of support, in a series of three empirical studies in order to inform theory and interventions targeting mental health of …

A Qualitative Study On The Persistence Of Seasoned Student Affairs Professionals, Russell Taylor Jones

Dissertations and Theses

The attrition of student affairs professionals has plagued higher education for decades and continues to negatively impact the profession. Over 40% of new student affairs professionals leave the field and leading contributors to this departure include unsustainable working norms, outdated and deficient job-related incentives, and burnout. Prior research focused primarily on why staff intend to leave and do leave student affairs, but little research has explored why professionals persist and successfully cultivate a long-term, sustainable career in student affairs. The purpose of this study was to explore the experiences of seasoned student affairs professionals who have persisted in the field …

The Mirror Project: Reflections On The Experiences Of African-American Female Adolescents Experiencing Foster Care, Bahia Anise-Cross Degruy Overton

Dissertations and Theses

As the author Zora Neale Hurston says, "If you're silent about your pain, they'll kill you and say you enjoyed it." The Mirror Project (MP) aims to break this silence by giving voice to Black women who have experienced foster care in Portland, Oregon during their adolescence. In focus groups and interviews, participants shared their stories. Racial identity development theory, phenomenology and Afrocentric feminist epistemology provided lenses for gaining insight into their experiences in a predominantly white city. The MP revealed six themes: lack of youth engagement in foster care decisions, the need for a cultural lens in social work, …

The Arab Spring Uprisings In Geopolitical Context, Jake Alan Rutledge

Dissertations and Theses

The question of why revolts, civil wars, and social unrest occur is central in the field of political science. This paper asks that question in the specific context of the 2011 Arab Spring uprisings as a revolutionary wave. Many theories of revolution and social unrest locate their causes in the internal characteristics of the country where they take place, such as the country's demographics or level of economic development. This paper examines the external situation of a country: its relationships with other states and the international community. This paper examines eighteen Arab countries in the Middle East and North Africa …

Mmwave Rat Optimization: Mac Layer Initial Access Design And Transport Layer Integration, Suresh Srinivasan

Dissertations and Theses

MmWave Radio Access Technology (RAT) is a promising technology for wireless communication due its large bandwidth and is already being deployed in 5G cellular and emerging WiFi technologies. MmWave systems use highly directional beams with narrow beamwidths to overcome the high path loss associated with their frequency bands. A mmWave radio can be used either in a standalone mode (where all radios use the same technology) or simultaneously with other technologies such as LTE and low frequency WiFi in a communication mode commonly referred to as integrated mode. This thesis proposes two methods to optimize mmWave RAT performance in both …

Understanding Quadrature Modulation By Designing A 7mhz Iq Test Bench To Encode The Polybius Square, William Lee Bradley

Dissertations and Theses

This thesis outlines the design of an IQ Test Bench that allows for experimentation of quadrature modulation techniques. Quadrature modulation utilizes two signals I and Q, 90° out of phase from each other, to greatly increase communication data rates. Using Desmos, a thorough mathematical analysis of waveform mixing is presented, and constellation diagrams are plotted from the results. From this an ancient fire signaling technique known as the Polybius Square is encoded into the system. The IQ Test Bench is built from fundamental components that would be contained within an RFFE: a local oscillator and two frequency mixers. The LO …

2020 Racial Justice Protests In Portland, Or: An Analysis Of Radical Place-Making And Police Tactics In A Neighborhood Context, Claire Brumbaugh-Smith

Dissertations and Theses

During the George Floyd protests, police used tactics infrequently seen until now, including the use of tear gas and sonic weapons in contested spaces. Police tactics are presumably sanctioned by policing directives, but little is known about how these tactics may vary across space at a granular spatial level, or how they might be normalized over time. To address this knowledge gap, I used the concept of repertoires of protest control to characterize and quantify the tactics of the Portland Police Bureau (PPB) deployed on racial justice protesters during the 2020 racial justice protests and describe the role of these …

Individual And Structural Contributors To Implicit And Explicit Anti-Muslim Bias In The United States, Aeleah M. Granger

Dissertations and Theses

This dissertation consists of two manuscripts addressing the multifaceted nature of Islamophobia in the United States by examining explicit and implicit anti-Muslim bias on individual and structural levels. The first manuscript tests an ideology-threat-attitude-behavior model by estimating the simultaneous mediating effects of threat perceptions on the relationships between individual differences in ideology, Islamophobia (fear of Muslims), and support for an anti-Muslim police surveillance policy. This study (N = 603) finds that individuals who are higher in Social Dominance Orientation (SDO), Right-wing Authoritarianism (RWA), and Nationalism are more likely to perceive Muslims as realistic (power), symbolic (value), and terroristic (safety) …

Pcl And Dmso2 Composites As Biomaterials For Additive Manufacturing, Jae-Won Jang

Dissertations and Theses

Tissue engineering provides a viable solution to address the shortage of organ donors for allograft transplants. Its primary objective is the replacement or regeneration of damaged tissues which is developed by combining living cells, a scaffold, and a bioreactor. Among these components, the scaffold serves as an artificial extracellular matrix (ECM), which plays a pivotal role in supporting cell adhesion, proliferation, differentiation, and overall tissue development. Additive manufacturing (AM), commonly referred to as three-dimensional (3D) printing, emerges as a promising method for scaffold fabrication due to its capability to create complex and repeatable geometries.

Polycaprolactone (PCL) has been one of …

Co-Opting Alliance With Efficient Grease Theory: An Observational Descriptive Study Of Corruption And Trust Nexus In Political Institutions In West Africa, Yarh Komolo

Dissertations and Theses

This dissertation presents an analysis of the impact of corruption as related to trust in political institutions in select West African nations. Corruption and some of its implicative hues are highlighted, considering such practice is generally an entrenched part of Africa in its economic, political, social, and cultural fabric and lifeline. In respect to the specific region of interest, robust Afrobarometer observational surveys convey data covering 14 of the 16 countries that comprise West Africa, with the exclusion of Guinea-Bissau and Mauritania which lack survey data. The study covers a seven-year period that runs from 2014 to 2021, excluding 2016 …

Shame And Social Interaction Quantity And Quality In Daily Life: The Moderating Effect Of Social Anxiety, Rachel C Bock

Dissertations and Theses

Frequent and fulfilling engagement in social interaction is paramount to human success and wellbeing. Yet, many individuals do not engage in social interactions of sufficient quantity and/or quality. Though some research indicates shame influences social behavior, the nature of this effect is unclear. Some research suggests shame is associated with effective engagement in social interaction, whereas other work indicates shame is associated with maladaptive avoidance of social interaction. One potential explanation for equivocal results may be a lack of accounting for mental health concerns, such as social anxiety. Social anxiety is positively associated with social impairments and shame, yet research …

A Field-Based Study Of Dust Emissivity In The Northern Chihuahuan Desert, U.S.: Testing The Preferential Dust Source Scheme, Gwenn L Harsha

Dissertations and Theses

We characterized spatiotemporal dust emissivity in the Northern Chihuahuan Desert (New Mexico, Texas, and Arizona, U.S.) using the Portable In-Situ Wind Erosion Lab (PI-SWERL) and measurements of soil crust strength, soil texture and soil moisture. Field-based measurements of emissivity were compared to the results of the Preferential Dust Source (PDS) scheme (Bullard et al., 2011) in the Chihuahuan Desert (Baddock et al., 2011) where 48% of satellite-observed plumes were sourced from ephemeral and dry lakes. Six landforms were tested: 1) ephemeral and 2) dry lake, 3) high and 4) low relief alluvial, and aeolian 5) sand sheet and 6) dunes. …

Critical Thinking Skills In Pre-Service Teachers And Their Coursework: Investigating The Preparation Of Teachers In The Rural Midwest With Humans, Ai, And Cyborg Researchers, Tiffany Ellen Rose Shonerd

Dissertations and Theses

Despite the plethora of research and literature regarding the relationship of critical thinking and its key role in promoting learning, little research investigated the teaching of critical thinking to pre-service teachers in their coursework along with how they facilitate it in their students. As future teachers worked towards completing their teaching degrees, student teaching permitted them to work in live classroom settings with veteran teachers as mentors. Markedly, scholars argued that future teacher programs needed to understand the importance of critical thinking and utilize facilitation strategies in classroom settings. In this way, the live classroom setting could then create students …

Childhood Betrayal Trauma And Intimate Partner Violence Perpetration And Victimization: The Role Of Attachment Insecurity And Affective Instability, Emma Shaughnessy

Dissertations and Theses

The present study examined the joint roles of attachment (anxiety and avoidance) and affective instability in the association between childhood betrayal trauma and intimate partner violence (IPV) perpetration and victimization severity. Two major societal concerns are IPV and childhood maltreatment. Childhood betrayal trauma is a particularly damaging trauma perpetrated by someone the child trusts and depends upon (e.g., parents). Childhood betrayal trauma has been associated with an increased risk of later IPV, both victimization (e.g., Babcock & DePrince, 2013) and perpetration (e.g., Linder & Collins, 2005; Zurbriggen et al., 2010). Childhood betrayal trauma also impairs the development of a secure …

The Parentification Of Eldest Daughters, Isabella Loraina Ciarico

Dissertations and Theses

The purpose of this study was to understand the experience of eldest daughters and to research if parentification in childhood impacts eldest daughter identities. The goal was to dive deeper into what it means to be the eldest daughter and how being the eldest daughter aligns with parentification. Two research questions guided this study: (a) what is the experience of the eldest daughter, and (b) How does parentification in childhood impact eldest daughter identities? Findings showed the experiences of eldest daughters with parentification.

Impulsive Behavior In The Context Of A Substance Use Treatment Seeking Sample: A Conditional Process Analysis Of Childhood Maltreatment, Experiential Avoidance, And Cognitive Fusion, Emily Kalantar

Dissertations and Theses

Substance misuse is associated with high impulsive behavior and may represent one behavioral manifestation of impulsive behavior. One predictor of substance misuse is childhood maltreatment, which is, in turn, associated with difficulty regulating unwanted emotion. Accordingly, impulsive behavior is high among individuals exposed to maltreatment and likely functions as one behavioral strategy for coping with unwanted internal experiences. Consequently, identification of behavioral processes that may account for the childhood maltreatment and impulsive behavior relation in substance misusers appears warranted. One process-based behavioral model that may be useful in this endeavor is psychological flexibility, which includes the inflexible processes of experiential …

More Than A Stop On The Way To Yellowstone: The Parks Of The Black Hills And Their Impact On Wilderness Preservation, Arianna Lynn Van Kley

Dissertations and Theses

This thesis examines the ideologies that contributed to the establishment of public parks in the Black Hills of South Dakota as a microcosm for nationwide conversations about preservation, tourism, nationalism, colonialism, and commerce. Wind Cave National Park, Custer State Park, and Mount Rushmore National Memorial each complicate and enhance understandings of how public preservation projects emerged out of debates that included ideas outside environmental protection efforts. The people who supported the establishment of these parks, such as the McDonald and Stabler families, South Dakota Senator Peter Norbeck, state historian Doane Robinson, and sculptor Gutzon Borglum, implemented their own ideas across …

The Impact Of Fluorination On The Volatility Of A Series Of Lanthanide Complexes, Kh Mahfuzul Alam

Dissertations and Theses

Volatile lanthanides have been proposed for applications such as chemical vapor deposition precursors and facilitating f-element separations. The latter is motivated by their broad use in technological applications. In collaboration with synthetic chemists, we studied Ln-complexes with functionalized forms of the bulky tris[(4-hydroxy-pentenylidene-2-imino)ethyl]amine (TRAC) ligand. Five ligands, labeled Yb(CH3,CH3TRAC), Yb(CH3,CF3TRAC), Yb(CF3,CF3TRAC), Yb(CF3,C3F7TRAC) and Nd(tbu,C3F7TRAC) were synthesized and volatile Ln complexes were obtained. However, the temperature at which they sublime was not sufficiently low for industrial applications. Therefore, this work examined the experimentally characterized Yb(CH3,CH3TRAC), Yb(CH3,CF3TRAC), Yb(CF3,CF3TRAC), Yb(CF3,C3F7TRAC) and Nd(tbu,C3F7TRAC) in detail. The importance of interactions between two neighboring molecules in …

The Effects Of Bilateral Stimulation On Motor Learning, Shania Rehmudin

Dissertations and Theses

Motor learning is a set of complex processes aimed at learning and refining new skills by practicing them. There are three proposed stages of motor learning: cognitive, associative, and autonomous. While all stages are crucial, research suggests that the cognitive stage holds particular significance, laying the foundational groundwork for effective skill acquisition. Although research has explored many innovative ways to facilitate motor memory, to our knowledge, none has explored the optimization of motor skill learning through manipulating the focus of attention using bilateral stimulation. Therefore, this study explored the effects of bilateral stimulation on squat skill acquisition. Nineteen (19) subjects, …

Financial Accessibility And External Environmental Forces: A Case Study Of Public, Four-Year Degree Granting Institutions’ Tuition Strategies, Julie Barnett

Dissertations and Theses

Shrinking federal funds and increased accountability expectations rendered a competitive environment for higher education institutions. To compete for enrollment, institutions needed to employ strategic decision-making within the bounds of tuition models imposed by their boards. However, there was a gap in the literature as to how institutions worked within their tuition models to respond to environmental threats. This case study addressed this gap by exploring the decision-making process of administrators in charge of financial and strategic decisions for their institutions, who considered the external educational marketplace. Collectively, there were four emergent themes: (a) marketing the student experience; (b) affordability as …

Critical Thinking Skills In Pre-Service Teachers And Their Coursework: Investigating The Preparation Of Teachers In The Rural Midwest With Humans, Ai, And Cyborg Researchers, Tiffany Shonerd

Dissertations and Theses

Despite the plethora of research and literature regarding the relationship of critical thinking and its key role in promoting learning, little research investigated the teaching of critical thinking to pre-service teachers in their coursework along with how they facilitate it in their students. As future teachers worked towards completing their teaching degrees, student teaching permitted them to work in live classroom settings with veteran teachers as mentors. Markedly, scholars argued that future teacher programs needed to understand the importance of critical thinking and utilize facilitation strategies in classroom settings. In this way, the live classroom setting could then create students …

Differences In Personality Pathology Among Non-Suicidal Self- Injury And Suicidal Behavior Patterns: A Latent Class Analysis, Rachel Chavin

Dissertations and Theses

Nonsuicidal self-injury (NSSI) is present among a range of personality disorders (PDs) and, though distinct from suicide (Whitlock et al., 2015). Individuals who engage in NSSI and/or suicidal behavior, tend to have similar symptomology consistent with PDs, like rumination (Bowen et al., 2019), impulsivity (Hamza et al., 2015), and greater sensitivity and emotional reactivity within social situations (Selby et al., 2012). Similarly, maladaptive personality traits have shown to positively relate to NSSI and suicide (Jimenez-Treviño et al., 2011; Turner et al., 2018). Yet, research also indicates that NSSI is a heterogenous behavior that varies in severity related to frequency, age …

Characterizing Sex Differences In Hpv Negative Head And Neck Squamous Cell Carcinoma, Sarah Barclay

Dissertations and Theses

It is now widely accepted that peripheral solid tumors are infiltrated by nerves. This infiltration of malignancies by nerves is referred to as tumor innervation. The Vermeer laboratory studies tumor innervation primarily in head and neck squamous cell carcinoma using a syngeneic cell line representing a mutationally-induced form of the disease; these cells are called MOC2-7 cells. In addition to defining the molecular consequences of tumor-infiltrating nerves on disease, the lab also focuses on their influence on behavior. This is important as cancer patients have a significantly higher incidence of depression and anxiety as compared to the population at large. …