Digital Commons Network^™

A Comparative Study Of Urban And Natural Nesting Gray Hawks In The Lower Rio Grande Valley Of South Texas, Evan Farese

Theses and Dissertations

Urbanization can negatively impact birds of prey, which occupy higher trophic levels. The Gray Hawk (Buteo plagiatus) is a neotropical raptor inhabiting the Lower Rio Grande Valley (LRGV) of Texas, where it is threatened. The species’ ecology has been little studied and it is unclear how urbanization may affect population viability. I studied Gray Hawk reproductive success, diet, and thermal ecology at nests in urban and natural habitats in the LRGV. Camera trap data showed adults at urban nests delivered mostly avian prey, while mammalian prey was most frequently brought to natural nests. Data from temperature loggers showed …

Developing A Small Molecule To Inhibit Hsf1 Expression In Cancer And Evaluating Natural Genetic Variation In Small Molecule Toxicity., Michaela Kendal Foley

Theses and Dissertations

Each year cancer affects nearly 20 million people worldwide and genetic differences across populations can impact cancer onset and progression. Specifically, tumors with high levels of HSF1, the master regulator of the cytoprotective heat shock response (HSR), are correlated with poor patient outcomes in multiple cancers such as prostate, breast, and melanoma. Subsequently, the development of pharmacological inhibitors of HSF1 represents a promising strategy for anticancer therapeutics. Using a luciferase-based transcriptional reporter, two small molecule libraries were screened for inhibitors of HSF1 expression in human embryonic kidney cells, yielding ten compounds that decrease HSF1 expression. To identify if cancer lines …

Matrix Training Of Verb Tenses With Autistic Children, Alexandra Lynn Ewald

Theses and Dissertations

The purpose of this study was to extend the research on matrix training by evaluating its efficacy for producing recombinative generalization of regular verb tense endings. Three autistic children were shown videos of people known to the participants acting out behaviors associated with an action about to take place, currently taking place, or that took place. The targets (actors, actions, and verb tenses) were arranged in a matrix, and the targets appearing along the diagonal of the matrix were directly trained, while the remaining targets were probed to determine if the participant was able to emit correct responses without any …

Blink-Related Brainwaves As Digital Biomarkers For Cognition Assessment During Complex Tasks, Lexine Carmlixa Sibert-Jolissaint

Theses and Dissertations

Blink-related oscillations (BROs) are neurophysiological responses observed in electroencephalography (EEG) following spontaneous blinking, reflecting the brain processing of new visual information. Prior research has demonstrated BRO responses across various cognitive states, such as resting, cognitive loading, and sensory stimulation, highlighting their potential as a non-invasive biomarker of brain function. We conducted the first investigation of BRO responses during a verbal fluency (VF) task, which is a complex, dynamic task state combining memory, visual perception, executive function, and language processing. Using publicly available EEG data from 22 healthy adults, we measured BRO responses over the left anterior frontal region corresponding to …

Art And Effort, Saul Gabriel Dominguez Ii

Theses and Dissertations

Since childhood I questioned living and my life itself. I wondered the extent of our own free will since people live to cry, to hate, to think they’ve been born simply to die. I use philosophers and some contemporary fiction to portray a lens of living where we must romanticize the present, rather than an uncertain future, and remove the idea that there is a reason for our living. This method of present thinking is a characteristic of a life-well lived. The manuscript will largely be told from my point of view, a young aspiring author with limited experience, through …

Selecting Green Wall Adoption Best Solutions Using Optimization: Addressing Barriers And Maximizing Benefits, Samar Nadeem

Theses and Dissertations

This research explores the potential of green walls as a sustainable solution to mitigate urban challenges and align with global climate change objectives. Despite their ecological and social benefits, green wall implementation faces significant barriers, hindering their adoption. Consequently, this study aims to develop a comprehensive framework to identify the obstacles, propose feasible solutions, and provide actionable strategies for promoting green walls. This framework incorporates an optimization model specifically designed for government-led solutions, evaluating their feasibility based on administrative feasibility, community acceptance, technical feasibility, industrial acceptance, and long-term adoption potential. By quantifying and prioritizing solutions based on their cost, feasibility, …

An Analysis Of The Effects Of Embedded Instruction And Item Quality On Activity Selection, Julianne Isabella Fernandez

Theses and Dissertations

Naturalistic teaching strategies, such as embedded instruction, have been used to effectively teach a variety of skills to individuals diagnosed with ASD and other developmental disabilities. However, the effect of embedding instructions on a child’s play preferences is unknown. The goal of this study is to evaluate whether response allocation is dependent on frequency of demands or quality of items available during preferred activities. We used a concurrent operants arrangement in which a room was divided into two sides and various toys were placed in each with embedded demands available in one side. In Experiment 1, researchers evaluated the time …

Early Breast Cancer Detection With Ultrasound Data Using Nmf, Rutvi Khamar

Theses and Dissertations

Early detection of breast cancer significantly influences patient outcomes. Dynamic Contrast-Enhanced Ultrasound (DCE-US) has shown promise in early detection by visualizing tumor vascularity and perfusion dynamics in real-time. This study evaluates the efficacy of DCE-US in distinguishing four stages of cancer progression: normal, hyperplasia, ductal carcinoma in situ (DCIS), and invasive cancer, using a transgenic mouse model that mimics human breast cancer. Ultrasound burst pulses, while commonly used to remove unbound contrast agents, can potentially damage human tissues. Using the pre-pulse data helps mitigate this risk, ensuring safer and more reliable measurements. A VEGFR2-targeted microbubble contrast agent was injected, and …

Evaluating A Video Modeling Approach To Teach Shelter Volunteers How To Interact With Dogs In The Shelter, Sean Michael Will

Theses and Dissertations

Well-trained volunteers are required to help meet the daily needs of dogs waiting to be adopted in animal shelters and to find new homes for them. Inadequate volunteer training leads to mismanagement and attrition of volunteers who are essential to helping shelter dogs get adopted. However, animal shelters often lack access to the resources and funds required to provide adequate training for volunteers. Using a nonconcurrent multiple baseline design, this study evaluated a cost-effective program consisting of video modeling with voiceover instruction, on-screen text, examples, and non-examples that instructed volunteers to interact with the dogs in a specific manner to …

Analysis And Derivation Of The Compressible Euler System With Nonlinear Velocity Alignment: An Investigation Into Collective Behavior, Mckenzie Meredith Black

Theses and Dissertations

Collective behavior refers to the observable patterns, actions, or movements that emerge within a group of entities, such as individuals, animals, or particles, when they interact with each other. In this study, we concentrate on the pressureless compressible Euler system, expanding it to incorporate a family of nonlinear velocity alignment. This extension represents a nonlinear iteration of the Euler-alignment system within collective dynamics, revealing intriguing asymptotic emergent phenomena such as alignment and flocking. Our investigation explores different types of nonlinearity and nonlocal communication protocols, unveiling a diverse spectrum of asymptotic behaviors within the system.

In focusing on the derivation, we …

Bridging The Gap Between Science And Technology: A Descriptive Study Identifying Factors Influencing 6-8th Grade Science Teachers’ Implementation Of Virtual Laboratory Simulations, Coral Nicole Hoesli

Theses and Dissertations

Teachers at a South Carolina middle school in the United States were not implementing virtual laboratory simulations at the same rate as other middle schools in the district. This descriptive research examined 6th-8th grade middle school science teacher perceptions and influencing factors behind the choice to implement virtual laboratory simulations. The study examined two research questions: (1) what are the personal and social factors influencing science teachers’ decisions to implement a virtual laboratory simulation, and (2) what are the structural factors influencing science teachers’ decisions to implement a virtual laboratory simulation?

The National Educational Technology Plan (NETP) and the International …

Assessing Relationships Between Water Quality, Precipitation, Land Cover And Stormwater Conveyance Type Across A Range Of Sub-Watersheds In The Southeastern Coastal Zone, Kevencia Sabine Gabriel Faton

Theses and Dissertations

The expansion of urban land use/cover along the coast may degrade water quality by introducing a plethora of pollutants and pathogens that negatively impact human and ecological health. It is hypothesized that anthropogenic contaminants associated with stormwater runoff increase with increasing urban density and vary with the timing and magnitude of rainfall. In this study, we examined land use/cover change and relationships between Escherichia coli (E. coli), turbidity, nutrients, and the timing and magnitude of rainfall in two different types of stormwater conveyances (ditches and ponds) within Murrells Inlet, SC during the summer of 2023. Our results indicate …

The Influence Of Instruction On Underrepresented Stem Leaders On Elementary Students’ Stem Identity And Perceptions Of Stem, Megan Elizabeth Willson

Theses and Dissertations

This action research study explored the influence of exposure to underrepresented STEM leaders on third-grade students’ STEM identity and their interest in STEM careers. Using an integrative STEM approach and guided by both Constructivist Learning Theory and Social Cognitive Career Theory, this convergent mixed methods study consisted of an eight-week intervention with lessons based on different STEM leaders and related activities each week. This eight-week period collected data through weekly researcher field notes, exit tickets and was prefaced and followed by a pre- and post-survey and pre- and post-interviews. Findings from the quantitative data, the Role Identity Survey in STEM …

Narratives In Motion: The New Era Of Dam Building In East Africa, Andrew Nicholas Selassie Prado-Alipui

Theses and Dissertations

Narratives of energy insecurity, underdevelopment, and resource conflict influence how African hydropower projects are justified within the broader context of climate change and demands for sustainable development. The challenge of meeting energy demands provides the overarching motivation for ambitious large-scale hydropower projects in East Africa, especially in Tanzania and Ethiopia. As development projects, the Julius Nyerere Hydropower Project (JNHPP) and the Grand Ethiopian Renaissance Dam (GERD) can be understood as vehicles of political discourse, framed as the technopolitical solution to questions of national identity that both countries face in the midst of sociopolitical and economic transformation periods. This research shows …

Bayesian Joint Modeling Of Longitudinal Data And Interval-Censored Failure Time Data, Yuchen Mao

Theses and Dissertations

Longitudinal data are a collection of repeated observations of the same subjects at different points in time. Interval-censored data arise when the time to the event of interest for each subject is never exactly observed but known to fall between two consecutive points in time. Joint analysis of longitudinal data and interval-censored failure time data can lead to more accurate estimates compared to separate modeling when the correlation among events of interest or intracluster correlation is present. The aim of this dissertation is to develop efficient and reliable joint analyses of longitudinal and interval-censored failure time data using Bayesian methods. …

Targeting The Country: Exploring The Technology Integration Practices Of World Language Teachers In Rural Georgia, Shannon Borum

Theses and Dissertations

Technology integration affords World Language teachers opportunities to engage with the target language and cultures in a way previously unknown, yet world language teachers in Georgia’s rural high schools have inconsistent integration of technology into their teaching practices. The study was guided by two research questions regarding (1) the current technology integration practices of world language teachers in rural Georgia high schools for communicative language teaching, and (2) the influences the decisions of world language teachers in rural Georgia high schools to integrate technology in their communicative language teaching. The purpose of this action research was to describe how high …

Insights Into Cortical Organization And Executive Dysfunction In Pediatric Traumatic Brain Injury, Madeleine Reading

Theses and Dissertations

Cortical gyrification is essential for cognitive development, yet its relationship with executive functioning (EF) in pediatric traumatic brain injury (TBI) remains unclear. This study examined whether children with TBI exhibit atypical cortical folding in EF-related regions and whether these differences relate to EF performance. Using FreeSurfer 7.1.1, we analyzed local gyrification index (LGI) in 206 participants (ages 5-18) from 14 sites within the ENIGMA Pediatric msTBI Working Group. Vertex-wise regression revealed that longer time since injury (TSI) was associated with increased gyrification in the right fusiform gyrus and multiple left-hemisphere regions, suggesting region-specific neuroplasticity. Contrary to expectations, higher GCS scores …

Fremont Human Remains In Sevier County, Alexis Maughan

Theses and Dissertations

This study examines Fremont mortuary practices in Sevier County, Utah, through a systematic analysis of 50 individuals, recovered mainly from Late period sites. While Fremont burials are typically described as highly variable, the Sevier County sample reveals a striking pattern: approximately half of the individuals exhibit evidence of processing and were left scattered on structure floors rather than being intentionally buried. This pattern stands in contrast to the widely accepted description of Fremont burials as consisting mainly of individuals buried separately in expedient pits with minimal grave goods. The analysis draws on previously published reports, compiling the available data on …

Assessing The Impact Of Internal Flow Dynamics On Detection Region Concentrations Of Low-Cost Optical Particle Counters, Livingstone Quarshie

Theses and Dissertations

Particulate matter (PM) poses significant risks to human health and the environment, making accurate measurement essential for exposure assessment and regulatory decisions. While traditional reference methods provide reliable data, they are often bulky, expensive, and difficult to maintain. Optical Particle Counters (OPCs) offer a cost-effective alternative, commonly used in clean rooms, residential spaces, and personal exposure monitoring. These devices rely on light scattering to measure PM concentrations. However, low cost OPCs face challenges related to calibration and measurement accuracy, requiring careful performance evaluation. This study used computational fluid dynamics (CFD) tools, CONVERGE Studio and ANSYS Fluent, to simulate a simplified …

Testing The Feasibility, Acceptability, And Preliminary Impact Of A Brief Behavioral Sleep Intervention To Improve School-Aged Childhood Sleep Behaviors, Isabella Delores Wright

Theses and Dissertations

Objectives: Parent knowledge of what healthy sleep looks like in their children has scarcely been evaluated, and little is known as to whether improving child sleep through a brief behavioral intervention that emphasizes mastery, personalization, motivation, and modeling will enhance sleep outcomes in children. As a result, we designed this study with the following aims in mind: 1) determine existing parental knowledge of healthy child sleep practices of parents; 2) test the impact of a personalized, brief parental sleep intervention aimed at increasing parental self-efficacy and parent behaviors; and 3) determine preliminary feasibility, acceptability, and impact of this personalized intervention …

Assessing Innovations In Wildlife Monitoring: Estimating Abundance And Inferring Parturition Of Ungulates With Technology, Elicia Cotcher

Theses and Dissertations

Enhancements in technology are creating opportunities for novel methods of wildlife monitoring. Traditional methods of wildlife monitoring are often costly or time-consuming, and new technological advancements such as remote cameras and GPS collars are creating opportunities for exploration as these technologies become more accessible and reliable. We sought to assess the efficacy of two novel methods of ungulate monitoring. The first is an abundance estimation method using remote cameras termed Instantaneous Sampling (IS). IS seeks to estimate abundance using time lapsed remote cameras on a population of unmarked individuals. Our goal was to compare IS estimations against the true observed …

Effects Of Novel Fire Regimes On Plant And Animal Communities, Ryan Pienaar

Theses and Dissertations

Human actions are threatening global biodiversity through changes to ecosystems to which species are not well adapted. One of the main pathways by which humans affect change is through altered disturbance regimes. This includes changes in the size, frequency, and severity of wildfires. The impact of wildfires on native plant and animal communities varies across ecosystems as species in a community have adapted relatively predictable fire patterns over time. Changing fire patterns alters successional dynamics that can favor certain species over others and thus have a negative impact on biodiversity. This dissertation evaluates responses of different plant and animal species …

Methamphetamine Effects On The Striatal Neuroimmune System, Hillary Adelaide Wadsworth

Theses and Dissertations

Dopamine is thought of as the reward molecule of the brain, and while it does deal with reward, it is also associated with motivation and crucial for controlled movement. There are two main dopaminergic systems in the brain, the nigrostriatal system, which originates in the substantia nigra compacta and projects dopamine into the dorsal striatum; and the mesolimbic system, which originates in the ventral tegmental area and projects dopamine into the nucleus accumbens. While the mesolimbic dopamine system deals with motivation and reward, the nigrostriatal pathway underlies movement. Microglia are the immune cells of the brain and are incredibly dynamic. …

Maximizing Germination Of Three Native Plants For Rangeland Restoration And Urban Landscapes Through Seed Enhancements, Janetta Teichert

Theses and Dissertations

Native plants offer numerous ecological benefits and opportunities for both rangeland restoration and urban landscaping, making their integration essential for building sustainable ecosystems. They enhance soil health, promote pollinator activity, increase microbial diversity, and support both wildlife and livestock, all of which contribute to overall ecosystem resilience. A promising strategy to improve the use of native plants is the application of seed enhancement technologies, which can optimize seed germination, improve seedling establishment, and enhance overall plant success in challenging environments. These post-harvest seed treatments incorporate materials that improve seed performance, often through coatings composed of binders, fillers, and active ingredients. …

Inquiry-Style Planetarium Activities, Emma Rasmussen Groberg

Theses and Dissertations

Introductory astronomy students often face challenges in exploring their own ideas and investigating astronomical phenomena due to the limitations of nighttime observation and weather conditions. Planetariums overcome these barriers by simulating the night sky, making it accessible during class sessions regardless of external conditions. This provides an opportunity to engage students in inquiry-based activities, where they are presented with a scenario and encouraged to use their own reasoning to reach conclusions. In this study, we implemented inquiry-based activities in PHSCS 127 using the planetarium as an investigative tool. We developed four activities designed to help students explore their ideas and …

Organismal Classification And The Phylogenetic Tree: Improving Its Teaching Using Decision-Based Learning, Melissa Cavan

Theses and Dissertations

For a lot of students, learning biology is like learning a new language. There are new terms and concepts that a lot of new students have never heard of. Evolution is the cornerstone for understanding biology, yet it is one of the more misunderstood topics. In combination with learning new terms and concepts some students come in with preconceived ideas about evolution or misunderstandings about how evolution and the phylogenetic tree work. The research indicates instructors attempting active learning techniques to increase understanding of the phylogenetic tree with mixed results, where there appears to be some improvement but nothing significant. …

"The Truth Of Our Historic Encounter": Curating Networks Of The Past In Colson Whitehead's The Underground Railroad, Holden O. D'Evegnee

Theses and Dissertations

What unites the critical response to Colson Whitehead's 2016 novel The Underground Railroad is universal interest in the text's attitude towards historical truth. I contend that critics fixate so much on the issue of truth that they miss how the novel offers an alternative to historic truth in the form of an aesthetic encounter. During her employment as a "living exhibit" in North Carolina's Museum of Natural Wonders, protagonist Cora despairs at the apparent absence of truth. Despite the overt manipulation of history to justify white imperialism in the museum, Cora experiences a transcendent moment of refuge when she works …

Genetic Regulation Of Anthocyanin Biosynthesis In Flower Color In Gilia, Veronica Mosquera

Theses and Dissertations

Gilia was the model species in this research to study the genetic regulation of flower color. I generated an F2 population from a cross of two closely related leafy-stemmed Gilia: G. capitata with blue and G. yorkii with white flowers, to obtain the fertile F1, which was selfed. The F2 population showed a segregation ratio between pigmented versus white flowers 3:1, suggesting a single locus with a major effect on the regulation of flower color. Then, the G. yorkii genome was assembled and annotated to become the reference genome to genotype-by-sequencing (GBS) 189 F2 individuals. The Quantitative Trait Loci (QTL) …

The Impact Of Sensory Sensitivity On Nutritional Outcomes In Children With Neurodevelopmental Disorders, Rachel M. Qualley

Theses and Dissertations

Background/Objective: Children with neurodevelopmental disorders (NDDs) are at increased risk of malnutrition due to restrictive dietary patterns and behavioral difficulties at mealtimes. Research suggests that heightened sensory sensitivity, a characteristic accompanying several of these disorders, may be a contributing factor. However, the effects of sensory sensitivity on nutritional outcomes across distinct NDDs have not been fully explored. This review aims to examine the relationship between sensory sensitivity and nutritional status, food preferences, and eating behaviors in children with NDDs, specifically investigating how atypical sensory processing might influence dietary intake.

Methods: A literature search was conducted using Google Scholar, PubMed, …

"Peace [That] Could Only Be Amazement, Too": Narrativizing Wonder And Strangeness In Marilynne Robinson's Lila, Tricia Cope

Theses and Dissertations

Set against the backdrop of the mid-twentieth century American Midwest, Marilynne Robinson's Lila is a profound story of loss and redemption told through the perspective of a young woman who emerges from a childhood of trauma and neglect and begins a new life in the quiet town of Gilead, Iowa. This paper examines the novel as a narrative meditation on the theological and ontological dimensions of wonder. While its fragmented structure and bleak subject matter have led some critics to interpret the novel as emotionally fractured or pessimistic, I argue that its recursive form and narrative disorientation are deliberate formal …