Digital Commons Network^™

Socioeconomic Disadvantage And Brain Structure In Adulthood, Alexander J. Dufford

Electronic Theses and Dissertations

Socioeconomic disadvantage in childhood has been associated with difficulties in physical and mental health later in life. A potential pathway underlying this association is through variations in brain development. While associations between concurrent socioeconomic disadvantage and brain structural development have been established, it is unclear if there are prospective associations between childhood disadvantage and brain structure later in life (adulthood). The following studies address these gaps in the knowledge by examining the prospective association between childhood socioeconomic status and brain structure in adulthood. Study One examines the association between average family income across childhood and brain structural morphometry in adulthood. …

Youth With Juvenile Justice Contact: Special Considerations In Measurement, Anne Elizabeth Biehl

Electronic Theses and Dissertations

Students who have contact with the juvenile justice system are a particularly vulnerable and unique school-aged population. The risk factors that plague the likelihood of justice-involvement are numerous and inter-connected. Early experiences of trauma and adversity, limited familial and financial capital, and challenges with mental health all contribute to increased likelihood of youth contact with juvenile justice systems. Despite said risk factors effects on young people overall, youth of color are particularly susceptible to become justice-involved. School and community discipline statistics are grossly, racially disproportionate.

Pathways from schools to the justice system have been widely investigate in the literature. There …

Pivotal Perceptions: A Phenomenological Exploration Of Trauma-Informed Practices In An Urban School, Marni Choice-Hermosillo

Electronic Theses and Dissertations

This phenomenological study sought to examine the experiences of teachers in an urban K-8 school after a system-wide whole school implementation of trauma-informed practices. The practices teachers implemented in their classrooms that aligned with their personal perceptions of trauma-informed practices and its efficacy were explored. Additionally, the personal and professional barriers to implementation were also investigated. Identified practical strategies at both the elementary and middle school levels included establishing and maintaining relational trust and classroom community, actively teaching emotional regulation skills, and teaching and reinforcing rituals, routines and expectations throughout the school year. Lack of confidence and previous personal assumptions …

The Impact Of A High School Theatre Arts Program On Students’ Academic And Non-Academic Learning Outcomes: A Case Study, Grant H. Goble

Electronic Theses and Dissertations

Research suggests that theatre arts participation benefits students’ academic and non-academic learning outcomes. The purpose of this single case study was to explore the impact of a theatre arts program on academic and non-academic for high school students by addressing the following overarching research question: How does student participation in a theatre arts program impact students’ learning outcomes? The subquestions are: (a) how do students describe the impact of a theatre arts program in relation to academic learning outcomes?, (b) how do students describe the impact of a theatre arts program in relation to non-academic learning outcomes? The study follows …

“The Gates Are Closed Here”: A Mixed Methods Study Examining The Lived Experiences Of Black South African Township Youth, Jason St. Mary

Electronic Theses and Dissertations

South African Black township youth encounter immense risks within their environment, with little opportunity for perceived success. The Langa Township, the oldest established segregated community in Cape Town, South Africa, is enveloped in massive unemployment rates, substantial poverty, and violent gangsterism. Extensive literature exists in North America on the relationship between positive youth development (PYD) and successful outcomes for young individuals, although there is limited research examining the framework in an international context. Due to historical oppression forced on South African youth, postcolonial theory provides a critical foundational component to PYD in the study. This mixed methods study examined the …

Renewable Energy Integration In Distribution System With Artificial Intelligence, Yi Gu

Electronic Theses and Dissertations

With the increasing attention of renewable energy development in distribution power system, artificial intelligence (AI) can play an indispensiable role. In this thesis, a series of artificial intelligence based methods are studied and implemented to further enhance the performance of power system operation and control.

Due to the large volume of heterogeneous data provided by both the customer and the grid side, a big data visualization platform is built to feature out the hidden useful knowledge for smart grid (SG) operation, control and situation awareness. An open source cluster calculation framework with Apache Spark is used to discover big data …

Fostering Trauma-Informed Schools By Considering The Experiences Of Teachers In Working With Trauma-Exposed Students, Allison A. Stiles

Electronic Theses and Dissertations

High rates of trauma exposure among youth in the United States and the detrimental effects of trauma on students’ psychosocial and academic outcomes are well-established. Such findings have engendered the emergence of trauma-informed schools across the nation. While research regarding trauma-informed schools has understandably focused on the needs of students, shockingly little is known about teachers’ experiences in working with trauma-exposed students. In particular, very few studies have examined the relationship between teachers’ indirect exposure to student trauma and related symptoms of secondary traumatic stress (STS), as well as factors that may predict STS levels or explain variation in the …

A Qualitative Study Of Non-Relational Foster Families Experiences Navigating The Education System, Emma Grace Topf

Electronic Theses and Dissertations

This qualitative study used a phenomenological approach to capture the lived experience of non-relational foster families navigating the Colorado public education system. While most research on children in foster care looks at all sub-populations of foster care combined, this is the first known study to focus solely on non-relational foster families navigating the education system. I explored non-relational foster parents experience navigating the education system for the school-age children in their care through a semi-structured two-interview approach. Four levels of data analysis were completed (descriptive coding, emergent coding of themes, a priori coding of research questions, and a priori coding …

Audience Segmentation Ethics In Health Promotion, Uyen Lili Le

Electronic Theses and Dissertations

Audience segmentation is a crucial component of health promotion campaigns as it is believed to support health-related campaigns to achieve greater benefits. However, there are numerous concerns about the ethicality of audience segmentation. For instance, Newton, Newton, Turk, and Ewing (2013) stated that audience segmentation can create inequalities between different groups of audiences. In addition, unintended audience and consequences are often excluded from health campaign planning and execution. These factors can negatively affect the campaign by creating adverse impacts. As a matter of fact, the prominent challenge of health promotion is sustaining the connection between ethics and effectiveness for promotional …

Climate Change And Seed Security Among Smallholder Farmers In Northern Ghana, Michael Biwalib Madin

Electronic Theses and Dissertations

Smallholder agriculture is highly susceptible to climate variability and change. According to recent projections by the Intergovernmental Panel on Climate Change, this sensitivity would likely increase in the coming decades, with more erratic rainfall, prolonged dry periods, shorter growing seasons, and seed germination failures. In the African context, the mechanisms through which these ecological stressors would affect seed security are poorly understood. Drawing upon a case study of semi-arid Ghana, this study examines climate change impacts on seed security among smallholder farmers. It adopts a mixed-methods approach with intensive fieldwork in two farming communities. Conceptually, the study uses a political …

Racially Diverse Adolescent Friendship Groups: A Phenomenological Research Study, Arielle Brooke Mottes

Electronic Theses and Dissertations

School psychologists and other school personnel are trained to engage in selfreflective and culturally humble practices to better serve an increasingly racially diverse student population. While most literature on cultural humility (CH) focuses on its development in professionals, this research study looks at its development in students experiencing the phenomenon of racially diverse friendship. Previous research has found there to be a significant relationship between Theory of Mind (ToM) and social competence. The intended purpose of this study was to explore the possible relationship between ToM and CH amongst high school students who are part of racially diverse friendship groups. …

Social Work, Social Justice, And The Causes To Which We Are Called: Attitudes, Ally Behavior, And Activism, Brittanie Atteberry Ash

Electronic Theses and Dissertations

As a profession, social work has codified within its ethical guidance and educational policies a commitment to social justice. While social justice is enumerated in several guiding documents, social work continues to lack consensus on both the meaning and merit of social justice (Abramovitz, 1993; Funge, 2011; Hong & Hodge, 2009; Specht & Courtney, 1995; Van Soest & Garcia, 2003). Due to the lack of agreement within the profession about the centrality and meaning of social justice, many educational practices, attitudes, and actions of those working within the profession may not align with socially just ideals that are codified in …

Working For A Living: A Terror Management Theory Approach To Finding Meaning In Vocation, Julian T. Frazier

Electronic Theses and Dissertations

Many individuals spend approximately a third of their lives either working, receiving training or education for work or otherwise engaged in their career. While the current literature attempts to discern the many roles that work can play in our lives, it only scantly explore the existential nature of work in relation to death and mortality. Terror Management Theory provides a framework explaining how increases in awareness of our mortality influences our behavior and beliefs. By studying work constructs from the lens of Terror Management Theory, we seek to gain insight on the potential role that work plays in bolstering psychological …

Empathy And Understanding: The Impact Of Gifted Adults In The Field Of Gifted Education, Laura N. Boroughf

Electronic Theses and Dissertations

This study examines the perceptions of gifted adults, who are educators, in order to understand the empathy and advocacy that comes with a shared childhood experience. This is a qualitative study that used narratives to voice the experience of the gifted child through the memory of eight gifted adult educators. These memories, and reflections on identification, were told through interviews. Themes emerged related to empathy, advocacy, and cognitive dissonance, as well as imposter syndrome, career readiness, gifted minorities and the positives of gifted programming. Ultimately, it was found that gifted programming is overwhelmingly a positive experience and mirrors the statement …

Performances Of An Able, Academic Mind, Caleb Green

Electronic Theses and Dissertations

Western culture individualizes issues of public health. This is especially clear in academic life, where the structures of the university disable atypical bodies and minds in order to force them to simultaneously perform the roles of scholar, teacher, and colleague. The university not only fails to accommodate afflicted minds and bodies, it also produces more precarity in the process. This project is a performance ethnography of my time in the academy, starting with my life as an undergraduate being disciplined into academic life, moving toward recruitment for graduate school, and ending with events surrounding the construction of this very project. …

Worker Cooperatives And Social Transformation: An Anti-Essentialist Marxist Perspective, Zachariah D. Thanasilangkul

Electronic Theses and Dissertations

Copyright is held by the author. User is responsible for all copyright compliance.

The Casc Framework: An Assessment Model For Students With Intellectual And Developmental Disabilities, Laurel A. Snider

Electronic Theses and Dissertations

School psychologists pay a critical role in providing assessment and intervention services within the realm of special education. Within this role, they are highly likely to interact with students with intellectual and developmental disabilities (IDD). Students with IDD are characterized by significantly lower than average cognitive and daily living skills that may be comorbid with difficulties with communication, social skills, or other domains. With these differences in mind, dominant assessment practices have been criticized as lacking social and empirical validity when applied to this population. Although students with IDD frequently undergo evaluations, they continue to face significantly poorer post-school outcomes …

Cellular And Organismal Ramifications Of De Novo Purine Synthesis Dysregulation, Randall Craig Mazzarino

Electronic Theses and Dissertations

Purines are a class of nitrogenous bases and are essential small molecules to life. Purines are used within the cell as genetic information carriers, energy currency, signaling molecules, and cofactors for multiple processes. They are formed through de novo and salvage pathways found in cells across the phylogenetic tree. The substrates of enzymes within de novo purine synthesis are known to influence other processes within the cell, such as energy homeostasis. In humans, de novo purine synthesis disorders are rare, with around 100 people identified. These patients exhibit a range of phenotypes, with varying degrees of mental retardation, seizure activity, …

How 6-12th Grade Staff Support Students With Depression: A Pilot Study To Develop Measures Of Implicit Associations, Explicit Attitudes And Helping Behavior, Paul M. Thompson

Electronic Theses and Dissertations

Students with emotional disabilities are disproportionately suspended and expelled in K-12 schools. Attribution theory suggests individuals are less likely to provide assistance to others if they believe the individuals are responsible for their own difficulties. To test attribution theory, this study created new measures of explicit attitudes and implicit associations of licensed 6-12th grade staff regarding students with depression as well as a helping behavior measure of staff toward students with depression. The survey was distributed within a single school district in the western United States. A majority of the sample (N = 52) held a mental health license (60%), …

The Effects Of Eligibility Complexity And Incentive Structure On Taxpayer Behavior, Joshua Lee Simer

Electronic Theses and Dissertations

Policymakers often use tax incentives to encourage desirable taxpayer behavior, and researchers from multiple disciplines provide evidence that these incentives lead to behavioral change. A new stream of literature focuses on the factors that affect the extent to which tax incentives achieve this goal, with specific emphasis on the factor of complexity. This study expands this literature by investigating the effect of eligibility determination complexity and tax incentive structure on the relationship between incentives and taxpayer behavior. Based on the findings from research on the take-up of social benefits, I predict and find some evidence that taxpayers are more likely …

Social Distance, Stigma, And Help-Seeking: An Exploration Of Autism Beliefs In The Southern United States, Christian Shannon Courson

Electronic Theses and Dissertations

Stigma has been associated with physical and mental health conditions and their treatment long before formal care systems. Negative perceptions within the lay community, such as stigma and social distancing, negatively impact individuals with autism and their families. The purpose of this study was to explore factors associated with autism stigma among laypeople in the Southern United States. Specifically, the study explored how demographics, knowledge, and familiarity are related to social distancing and stigma, and how these factors relate to beliefs about and intentions of help-seeking. Using a lay sample (N=108) of rural Southern towns, survey data was collected in …

Formulation Development Of Curcumin-Piperine Solid Dispersion Via Hot-Melt Extrusion To Enhance Solubility And Bioavailability Of Curcumin, Abdulmajeed Althobaiti

Electronic Theses and Dissertations

Curcumin has been known to have a variety of biological activities in different diseases, including inflammation, cancer, and diabetes. The limited bioavailability of curcumin is due to its low solubility and extensive metabolism, rendering curcumin unusable as an oral therapeutic agent. The aim of the study is to enhance the solubility and bioavailability of curcumin by preparing curcumin-piperine solid dispersion (SD) utilizing the hot-melt extrusion technique. Three physical mixtures with different ratios were prepared as following: F1 (5% w/w piperine, 15% w/w curcumin, 80% w/w Soluplus®), F2 (10% w/w piperine, 30% w/w curcumin, 60% w/w Soluplus®), and F3 (15% w/w …

Examining Communication Patterns And Identity In Families With Children Who Are Deaf Or Hard Of Hearing, Amber L. Alvey

Electronic Theses and Dissertations

“Deafness in the context of the hearing family attacks the backbone of the family structure, namely communication” (Ahlert & Greeff, 2012, p. 402). There is a link between communication and identity, specifically the role of communication on identity (Jung & Hecht, 2004). The purpose of this study is to better understand the experiences of families with children who are deaf or hard of hearing by investigating the relationship between family communication patterns and identity. In this study, I conducted in-depth interviews with the parents of children who are hard of hearing to investigate family communication patterns and identity. Using Family …

In Situ Analysis Of Line-1 Promoter Activity Using Lacz Transgenic Mice, Partha Sarathi Saha

Electronic Theses and Dissertations

Apart from an evolutionary role, transposable elements have been implicated in animal development and also in pathophysiology. Non-LTR retrotransposons– LINE-1, Alu and SVA - are responsible for over 120 cases of human genetic diseases as heritable insertions, and are emerging as an important etiological factor for cancer and neurological disorders as somatic mutations. It is estimated that among the total number of 500,000 LINE-1s presents in the human genome, 80-100 LINE-1s remain competent for retrotransposition. Retrotransposition is only possible when LINE-1 is expressed. Because LINE-1 transcription is regulated by its 5’UTR promoter, it is essential to understand the spatiotemporal control …

In-Season Crop Management Effect On Soybean Yield And Grain Quality In Eastern South Dakota, Kelsey Bergman

Electronic Theses and Dissertations

Soybean [Glycine max (L.) Merr.] yield has increased over time by introduction of newer varieties and improved agronomic practices. However, grain protein concentration has been decreasing at the same time. New field studies in 2018 and 2019 investigated inseason crop management practices effect such as use of foliar protection application, fertilizer application, different maturity length or different planting dates on grain yield and grain quality. The studies were established near Brookings, SD and Beresford, SD. In-season treatments were targeting nutrient availability or protecting soybean canopy during the grain filling period. Such treatments included the use of fungicide, insecticide, or supplying …

Mechanistic Studies To Understand The Role Of Human Gut Microbiota In Colonization Resistance And Gut Health, Sudeep Ghimire

Electronic Theses and Dissertations

Human gut microbiota is comprised of thousands of species which fall into two major categories or “enterotypes” based on dominating bacteria: “Bacteroides” and “Prevotella”. Bacteroides enterotype dominates the microbiota of the western population because of a high protein and fat diet, whereas Prevotella enterotype is dominate in the gut of the eastern population because of a high carbohydrate diet. While most of the microbiota studies focused on the Bacteroides enterotype using both metagenomics and culturomics, Prevotella enterotype is understudied, especially in the field of culturomics. The structure of the Prevotella dominated gut microbiome is revealed by …

Genomic And Culturomic Analysis Of Gut Microbiota Function And Salmonella Enterica Expansion, Gavin Fenske

Electronic Theses and Dissertations

Enteric bacteria that are resident in the hindgut of mammals are critical in immune development, digestion, and colonization resistance against pathogens. One of the major pathogens that gut commensals provide resistance against is Salmonella enterica, a major foodborne pathogen capable of infecting almost every warm-blooded animal. Given the interplay between pathogens and commensals in the gut lumen, the gut microbiota of pigs was studied by combining two disparate techniques: shotgun metagenomics and high throughput culturomics. Metagenomics readily identifies major taxa present in samples and can give an estimation to total genetic catalogue from an environment. However, many rare or …

Investigating Post-Concussion Neurocognitive Deficits Using The Immediate Post-Concussion Assessment And Cognitive Testing Tool, Megan Ekern

Electronic Theses and Dissertations

Concussions represent a serious public health concern due to their severe short and long-term consequences. Many adolescents participate in sports that involve the chance of injuries such as concussions. Concussive injuries can be difficult to describe because most symptoms involve non-physical indicators such as impaired cognition, altered behavior, or sleep disturbances. Symptoms can also be influenced by age, gender, and previous history of concussions. Current best practice is to remove the athlete from activity and perform several tests to critically evaluate and assess the injury. ImPACT is a type of neuropsychological testing that includes patient information, baseline tests, postinjury assessments, …

Using Computational Fluid Dynamics To Accurately Model Agricultural Spray Nozzles, Zachary Chapman

Electronic Theses and Dissertations

Computational fluid dynamics (CFD) is a tool used by engineers in many industries to study fluid flow. A relatively new industry to adopt the use of CFD is the agricultural industry. The present work seeks to understand whether CFD can be used to accurately model spray nozzles. A spray nozzle commonly used in agricultural spraying was simulated. First, the impact of factors such as mesh size, mesh type, and physics models have on the solution were investigated. Next, a method to pulse the spray was determined. This was required to compare simulation results with experimental data. A user-defined function was …

Semantic Segmentation Using Modified U-Net Architecture For Crack Detection, Michael Sun

Electronic Theses and Dissertations

The visual inspection of a concrete crack is essential to maintaining its good condition during the service life of the bridge. The visual inspection has been done manually by inspectors, but unfortunately, the results are subjective. On the other hand, automated visual inspection approaches are faster and less subjective. Concrete crack is an important deficiency type that is assessed by inspectors. Recently, various Convolutional Neural Networks (CNNs) have become a prominent strategy to spot concrete cracks mechanically. The CNNs outperforms the traditional image processing approaches in accuracy for the high-level recognition task. Of them, U-Net, a CNN based semantic segmentation …