Digital Commons Network^™

How Latine College Students Experience, Maneuver, And Navigate Within The Colonizing Notion Of Smartness, Jasmine Jetton-Gonzales

Theses and Dissertations

This study explores how Latine college students, particularly those who are the first in their family to attend college, navigate and maneuver within the dominating colonizing notion of smartness in academia. Rooted in an Anglo-centric educational framework, the American education system often marginalizes Latine students by devaluing their cultural and linguistic knowledge while upholding Eurocentric standards of intelligence. Using a qualitative critical research approach, this study employs testimonios to examine the lived experiences of Latine college graduates in Illinois. Findings reveal that Latine students frequently encounter systemic barriers that challenge their academic identity, including racialized perceptions of intelligence, institutionalized deficit …

Stress And Behavior In Beef Calves During Weaning, Kathleen E. Tierney

Theses and Dissertations

Animal welfare in commercial livestock operations has been an increasing topic of concern. It is well known that stress can have significant behavioral and physiological repercussions. It is especially important in commercial operations to reduce stress, as animal efficiency is the leading priority. In an effort to reduce stress on animals and improve welfare in livestock operations, several studies have evaluated common husbandry practices. One of the most widely studied practices is weaning, which encapsulates the process of removing the young from the dam. Several studies have evaluated the effects of weaning on beef cattle through a variety of behavioral …

Utilizing Evisits To Increase Access To Genetic Services For The Hearing Loss Population: A Tailored Service Delivery Model, Ansley Roberts

Theses and Dissertations

Purpose: Patients referred for genetics services have specific barriers decreasing accessibility, such as communication difficulties, long wait times, and misconceptions about the utility of genetic testing. We assessed a new tailored service delivery model used by the Greenwood Genetic Center to evaluate patients referred for hearing loss to determine if this model increases access to genetics services for individuals with hearing loss. Methods: Data points such as wait times, testing plan, and diagnostic yield were compiled from patient medical records. Comparison and analysis of data was completed by visit type, in-person, virtual, and electronic visits (eVisits), between October 2023 – …

Invention Beyond The Author, Jonathan Brent Butler

Theses and Dissertations

The following dissertation examines how what Michel Foucault calls the “author function” affects contemporary students of writing and examines some historical alternatives to this way of conceptualizing the writing process and the writer’s role in it. Chapter 1: Author (Dys)function describes the author function and its discontents, the problems of the Romantic conception of “genius,” and summarizes the following chapters. Chapter 2: Early Writing Instruction focuses on classical approaches to rhetorical instruction that emphasize habit and aim at the cultivation of a particular subjectivity characterized by the capacity to respond to shifting rhetorical situations; this chapter draws on the work …

Emotions And Cognition, Krystal D. Becks

Theses and Dissertations

Background: Cognitive functioning is linked to emotional processes, with this relationship shaped by various biological (e.g., age, sex, diseases, and genetics), psychological (e.g., emotional well-being, coping strategies, mental health), and sociological (e.g., income and education) factors. Understanding these interactions is critical for advancing research on cognitive-emotional health across diverse populations. Purpose: To examine the relationship between positive and negative emotions and cognitive functioning among healthy adults. Methods: This was a cross-sectional analysis of data from the Aging Brain Cohort (ABC) study (n=434). The independent variables were subsets from the NIH toolbox emotional battery. The dependent variables were from the NIH …

Self-Regulation In Children With Fragile X Syndrome: Biobehavioral Underpinnings, Familial Predictors, And Outcomes, Erin Evelyn Hunt

Theses and Dissertations

Self-regulation is a multifaceted construct that occurs on biological, cognitive, emotional, and behavioral levels. Self-regulatory abilities typically emerge in the first years of life and continuously develop through early adulthood. There is considerable interindividual variability in developmental trajectories of self-regulation which are associated with numerous adaptive and maladaptive outcomes. Factors influencing the development of self-regulation include interacting genetic and social environmental factors. Given the high heritability of self-regulation, within-family associations are common.

Individuals with Fragile X syndrome (FXS), an inherited, single-gene neurodevelopmental disorder, have heightened vulnerability for self-regulation deficits that are evident in early infancy; however, the developmental trajectories and …

Investigating The Role Of Rps3 In The Homologous Recombination Dna Repair Pathway, Jerome Robert Dorsey

Theses and Dissertations

Ribosomal proteins have been demonstrated to perform extra-ribosomal functions beyond protein synthesis, including roles in cell signaling, transcription regulation, apoptosis, and DNA repair. Ribosomal protein S3 (RPS3), in particular, has been implicated in DNA repair and apoptosis pathways, suggesting a critical role in maintaining genomic stability. However, the specific mechanisms involving RPS3 are still unknown, particularly in the context of double-stranded break (DSB) repair. DSBs are among the most severe types of DNA damage, often resulting in chromosomal instability or cell death if not properly repaired. Nonhomologous End Joining (NHEJ) and Homologous Recombination (HR) are the two primary DNA repair …

“Digital Shame Shift”: From Telling The Pain To Recording The Truth — Black Maternal Health And Digital Counter-Narrative Storytelling On Tiktok, Odera Covenant Ezenna

Theses and Dissertations

This dissertation explores how digital storytelling on TikTok is used to challenge medical racism, with a particular focus on Black maternal health. Guided by Critical Race Theory (CRT) and Critical Technocultural Discourse Analysis (CTDA), the study examines how TikTok users—ranging from Black mothers to healthcare professionals—create and circulate counter-narratives through two prominent campaigns: #BlackMaternalHealthWeek and #BlackMamasMatter. These digital stories serve as acts of resistance, disrupting dominant medical discourse and amplifying the lived experiences of Black birthing individuals. The research analyzes over 2900 TikTok videos posted between 2021 and 2024, identifying key themes, storytelling strategies, and rhetorical shifts over time. The …

Perceptions Of Mental Health School-Based Team Members On Addressing Suicidal And Non-Suicidal Self-Injurious Behaviors: A Qualitative Inquiry Into Policy Implementation And Practice In School Settings, Ashlande Smith

Theses and Dissertations

The purpose of this study was to explore the perceptions of mental health school-based team members regarding the effectiveness of current prevention and intervention practices for addressing suicidal and non-suicidal self-harming behaviors among school-age children in a large suburban school district in the southern United States. Despite the alarming increase in self-injurious behaviors, with crisis calls rising from 144 incidents in the 2022 school year to 736 incidents in the 2025 school year, the district lacked comprehensive prevention and intervention strategies to effectively address this critical issue.

The researcher used a qualitative phenomenological approach to capture the lived experiences and …

Perceptions Of Victims On The Influence Of Domestic Violence Programs On The Decision To Leave, Tiffany Kleiman-Bourdeau

Theses and Dissertations

Dating back to earlier times, domestic violence was referred to as marital disputes and was not even considered a crime by law enforcement. However, that has since changed and now individuals are convicted for such crimes against another person. There are several treatment plans and options for these abusive individuals to take to receive the help they need to refrain from being abusive towards others, but what of the victims? What programs and/or services are available to them? Do these services even help the victims? This Idea Paper will examine the effectiveness of the programs and services available to domestic …

Foster Care Placement And Law Enforcement Contact, Tranika Guerrero De Los Reyes

Theses and Dissertations

Interaction with law enforcement and delinquency are higher among youth in foster care, and they are likely to experience higher incarceration rates and be involved in criminality, which limits their access to education and employment. The problem addressed in this study was the elevated risk of law enforcement contact outcome (LEO) among adolescents and young adults with a history of foster care placement. The purpose of this quantitative research was to investigate differences in the number of LEO contacts and LEO arrests based on foster care placement type among youth in California’s foster care system.

Guided by the social control …

The Impact Of The Annapolis Police Athletic League On Youth Crime Prevention And Police-Youth Relationships, Talia Carol Lisko

Theses and Dissertations

The Annapolis Police Athletic League (PAL) was established as an initiative to prevent juvenile delinquency by fostering positive relationships between at-risk youth and law enforcement. The study explored the effectiveness of the PAL program using a generic qualitative research approach informed by the CIPP evaluation model. Semi-structured interviews with police officers and volunteer mentors involved in the program provided insight into the program’s implementation, outcomes, and its influence on youth crime prevention in the Annapolis community. The findings from this study contribute to a deeper understanding of community-based crime prevention and the role of law enforcement in promoting pro-social attitudes …

Sulfate Sources In Groundwater From An Agricultural Area Central Illinois, Christabel I. Obi

Theses and Dissertations

Increasing sulfate (SO₄^2-) concentrations in the water environment, corresponding with increases in urbanization and industrialization, are a rising global concern. Over 250 mg/L, sulfate threatens human health and ecosystems. Elevated concentrations influence carbonate rock weathering, contributing to the evolution of the global carbon cycle. Knowledge of sulfate sources, whether natural or anthropogenic, is essential for understanding sulfate transport and fate in groundwater. This study investigates SO₄^2- origin and transport in groundwater in an area dominated by agricultural land use in Mclean County, Illinois. Specifically, we explored these questions: 1) Do sulfate concentrations change with groundwater …

Enhancing Concrete Sustainability With Self-Healing Technologies, Al Shimaa Abdullatif

Theses and Dissertations

Thanks to its strength, durability and affordability, Portland cement concrete is the most commonly used building material worldwide. However, concrete cracking is inevitable due to numerous factors including shrinkage, exposure to external chemicals, internals reactions, excessive loads, to name but a few. Self-healing is a promising technique that can enable concrete to autogenously heal cracks and alleviate much of the damage. Such healing can without a doubt extend the service life with less need for external repair works therefore it contributes to sustainability. Over the years, several means of self-healing agents have been explored including bio-based procedures and the incorporation …

Geochemical Characterization And Predictive Soil Mapping Of Ice-Free Regions In Antarctica, Rachel Willmore

Theses and Dissertations

Antarctic soils are formed by extreme climate, minimal biological activity, and diverse geological settings. This study analyzes 201 soil samples across four ice-free Antarctic Conservation Biogeographic Regions - North-west Antarctic Peninsula, Transantarctic Mountains, South Victoria Land, and North Victoria Land - to create a geochemical database (pH, EC, CEC, C and N, and ion concentrations) as well as to determine if there are consistent trends between geochemical properties and soil forming factors (SCORPAN). Despite variation in geochemical properties and SCORPAN covariates, some consistent trends emerged across all regions and individual Antarctic Conservation Biogeographic Regions. Using SCORPAN covariates and multiple linear …

Local Food System Planning On Multiple Governance Scales: A Grounded Theory Analysis, Decker Ure

Theses and Dissertations

Local food systems (LFS) comprise the people, policies, infrastructure and practices of food production, distribution, and consumption in localized areas. LFS are becoming an increasingly important part of urban sustainable development and have recently gained significant traction in the urban planning and sustainable community spheres. Worldwide shocks to global food systems such as the COVID-19 pandemic and the Ukraine-Russia war have further elevated global interest in LFS, bringing local food to the forefront of many communities as they try to insulate themselves and their food supply from future risk. However, despite this growing interest in and policy momentum for local …

Contributions Of Glacier Meltwater To Water Resources And Water Quality Below The Ablating Coropuna Ice Cap In The Arid Peruvian Andes, Alexis Rowley

Theses and Dissertations

Rapidly retreating glaciers in the arid tropics are an invaluable resource for communities that depend on meltwater to support drinking water, agriculture, hydropower production, and mining. There is limited understanding of how glacier loss will impact regional water resources, groundwater flow paths, and water quality, especially during the dry season. The Nevado Coropuna volcano in Southern Peru has one of the largest remaining ice caps in the tropics, but has experienced rapid ice loss in the past few decades and is projected to disappear in the next century due to climate change. Located in the northern Atacama Desert, the arid …

Kinetic Modeling Of Bacteria Removal From Suspensions By Magnetic Nanoparticle Capture And Magnetic Separation, Bowen J. Houser

Theses and Dissertations

This thesis investigates the kinetic modeling of bacteria removal from suspensions using magnetic nanoparticle (MNP) capture and magnetic separation. Functionalized magnetic nanoparticles, especially those coated with polydopamine (pDA), were employed to bind with various bacterial species in phosphate-buffered saline (PBS), apple juice, whole blood, and its components. By analyzing the capture efficiency and kinetics of capture across different bacterial species and mediums, we developed mathematical models describing the capture kinetics of bacteria by the pDA-MNPs. Experimental results demonstrated that pDA-coated MNPs achieved high capture efficiency with certain Gram-positive species like Staphylococcus aureus, and one Gram-negative species, Neisseria perflava; however, capture …

Quality And Sensory Characteristics Of Selected Freeze-Dried Foods After 50 Years Storage, Prithiviraj Jegannathan

Theses and Dissertations

Freeze-drying is a dehydration process that uses low temperature and pressure to remove moisture from food. With an annual market value of over $35 billion in 2023, freeze-dried foods are widely used in various situations requiring long-term storage such as military rations, emergency food supplies, and space exploration. Freeze-dried foods are becoming more popular for their quality, light weight, easy storage at room temperature, and quick rehydration. Moreover, many freeze-dried food manufacturers claim that their freeze-dried food products can last for 25 years or more. However, there are currently no published studies supporting such claims. Chemical, physical, and sensory properties …

The Influence Of Heat Therapy On Redox Signaling In Skeletal Muscle, Kimberly Miriam Richard

Theses and Dissertations

Reactive oxygen species (ROS) have been identified as crucial signaling molecules in skeletal muscle adaptations to exercise and signal for protective pathways within the myofiber. Pathological heat stress studies in animals demonstrate the ability of heat to increase ROS production in skeletal muscle. Limited data on the influence of therapeutic heat on ROS production and redox signaling in human skeletal muscle exists in the literature. The purpose of this study was to assess ROS production and redox signaling in human skeletal muscle following an acute, therapeutic bout of heat treatment. We hypothesized that heat would create an oxidized environment within …

Phosphorus Adsorption Capacity Of Volcanic Scoria, Easton Jeffrey Perkins

Theses and Dissertations

Phosphorus (P) pollution in stormwater runoff poses a significant threat to water quality, contributing to eutrophication and ecosystem degradation. This research evaluates the potential of volcanic scoria (VSco), an abundant and cost-effective resource in Utah, USA, to influence P concentrations in urban stormwater systems. Batch adsorption experiments examined the behavior of VSco across three particle sizes—fine (<0.841 mm), medium (0.841–2 mm), and granular (2.38–9.5 mm)—under conditions mimicking stormwater scenarios. The results reveal that fine VSco exhibited higher adsorption efficiency than medium and granular sizes, achieving notable P removal at higher concentrations. However, at lower concentrations, fine VSco showed potential for P release due to desorption of pre-existing P. Medium and granular VSco showed minimal adsorption capacity and, in some cases, acted as P sources, highlighting a dual potential depending on stormwater conditions. Adsorption isotherms indicate that the adsorption behavior of fine VSco aligns with the Langmuir model, with a finite and relatively low adsorption capacity. Calculated distribution coefficient (Kd) values for fine VSco ranged from 0.04 to 0.005 L/g, indicating weak adsorption efficiency compared to materials like activated carbon (1–10 L/g) or soils with moderate adsorption capacity (0.1–0.5 L/g). Loss-on-ignition tests confirmed that VSco’s performance is driven by its physical and chemical properties, particularly its calcium content, rather than organic matter. The study emphasizes caution in applying fine VSco for stormwater remediation due to its potential to release P under typical runoff conditions. However, fine VSco may still be viable in specific scenarios where P levels are higher, such as in stormwater hotspots or localized areas with elevated concentrations, allowing for targeted remediation. The research underscores the need for further testing to refine VSco’s applications, particularly in low-impact development (LID) practices, such as infiltration basins and rain gardens, to effectively manage P levels while supporting ecological and aesthetic goals. These findings contribute to understanding the complex role of VSco in urban stormwater systems, offering insights for sustainable water quality management and nutrient cycling in urban landscapes.

Method For Measuring The Rate Of Improvement In Survival Times Of Cancer Patients, Thobani Chaduka

Theses and Dissertations

In clinical settings, technological advancements have facilitated health care improvements in data analytics, artificial intelligence, telemedicine, health information systems, etc. This has furthered our understanding of cancer biology and treatment mechanisms. In this study, we aim to understand whether Moore’s law-like models may derive from historical cancer survival data, and how they can predict survival statistics for newly diagnosed cancer patients. Historically these predictions have previously been done with the diagnosis year as the independent variable and the survival as a dependent variable. In this study we use death year data as an independent variable and from that, we derive …

Existence And Uniqueness Of Solutions Of Fourth Order Iterative Boundary Value Problems, Zach Whaley

Theses and Dissertations

In this dissertation, we study the fourth-order iterative differential equation \begin{displaymath} x^{(4)}(t) = \f(t, x(t), x^{[2]}(t), \dots, x^{[m]}(t)) \end{displaymath} where $x^{[2]}(t) = x(x(t))$ and $x^{[j]}(t) = x(x^{[j - 1]}(t))$ for $j > 2$. We consider the above equation with multiple sets of boundary conditions, and we state results on the existence and uniqueness of solutions for each set of boundary conditions. In Chapter 2, the boundary conditions are conjugate boundary conditions, \begin{align*} &x(-a) = -a, \ x'(-a) = b, \ x''(-a) = c, \ x(a) = a \\ &x(-a) = -a, \ x(a) = a, \ x'(a) = b, \ x''(a) …

Generative Ai And Professional Technical Writers: A Mixed-Method Study, Jarrett Schaefer

Theses and Dissertations

This research investigates how professional technical writers use AI technology in their work today, which tools they are using, and which tasks they use them for. Using a mixed-methods research design, the study involved 21 participants completing a survey hosted in Qualtrics, and three participants interviewed over Zoom. Quantitative analysis was performed on the survey data, and the researcher used grounded theory to analyze the transcripts of the interview participants. The findings offer insight into how professional technical communicators use these tools and their attitudes toward including AI technologies in future pedagogies. While most participants had used AI technology in …

Traveling Waves In Biological Population Models, Ahlam Alzahrani

Theses and Dissertations

In this thesis, we examine the existence of traveling waves in population models. We begin by exploring conditions under which traveling waves exist, even when the migration probability lacks a density function or, if the density function exists, it may be discontinuous. To address this, we impose certain conditions that ensure the monotonicity of the evolution operator, enabling the application of the Monotone Iteration Method. Next, we explore the existence of monotone traveling waves in a general class of integral-difference population models that depend on both the previous state and long-term memory, allowing for the consideration of multiple past states. …

Integrative Single-Cell Genomics And Machine Learning Methods For Tumor Microenvironment Characterization And Survival Prediction, Wenjuan Zhang

Theses and Dissertations

The tumor microenvironment (TME) comprises diverse cell types and plays crucial roles in cancer development and therapeutic response. Single-cell RNA sequencing (scRNA-seq) data quantifies gene expression at the single-cell level, enabling the dissection of heterogeneous cell populations in various biological contexts and diseases. In this work, we developed integrative single-cell genomics and machine learning approaches to characterize the TME and enhance patient survival prediction. We introduced a convolutional neural network (CNN)-based method, cnnImpute, to address the high proportion of missing data in scRNA-seq datasets. cnnImpute effectively imputes missing values while preserving the integrity of cell clusters, achieving superior performance in …

Performance Prediction For Hub-Based Swarms, Puneet Jain

Theses and Dissertations

Optimization problems lie at the core of improving performance in various tasks, ranging from day-to-day work scheduling to coordinating robots in a warehouse fulfillment center. Distributed swarm systems provide a robust and adaptive solution approach to many optimization problems. Instead of using one really sophisticated agent, multiple smaller less sophisticated agents can provide the flexibility to evaluate more options and still provide a "good" answer. This dissertation uses graphs to model, analyze, and simulate swarm behavior, primarily to predict the time-to-converge (TTC) and success probability. First, we use a bipartite model for the distributed best-of-N problem, and show how the …

Next Generation Sequencing Based Profiling Of Genes In Patients With Syndromic Forms Of Retinitis Pigmentosa, Harshavardhini G

Theses and Dissertations

India is one of the largest populations in the world and is estimated to have a high prevalence of Retinitis Pigmentosa (RP). RP is clinically and genetically heterogenous, characterized initially as night blindness, leading to complete vision loss due to retinal degeneration. RP can occur in non-syndromic or syndromic forms, affecting other organs as observed in Bardet Biedl Syndrome (BBS) and Usher syndrome (USH).

BBS is characterized by RP, polydactyly, obesity, renal anomalies and learning difficulties. USH is characterized by RP and sensorineural hearing loss (SNHL), with variable presence of vestibular dysfunction. Nextgeneration sequencing (NGS) has become a cost-effective technology …

Geomorphic Evolution Of St. Augustine Inlet, St. Johns County, Florida, Kristen Becker

Theses and Dissertations

Tidal inlets interrupt longshore sediment transport, influencing adjacent beach morphology and allowing the exchange of water and sediment between the open oceans and protected back barrier bay. Inlets evolve through a combination of natural processes and are highly dynamic zones where sediment exchanges cause shifting shoreline positions nearby and create new morphological features. Barrier islands/beaches that are close in proximity to inlets evolve and are an important natural feature that dissipates wave energy and protects inland areas. Both natural and anthropogenic processes that affect barrier islands will be investigated during this study, including storm activity, waves, wind, water level, and …

Climate Change Impacts On Dryland Ecosystems, Tanner Tainui Aiono

Theses and Dissertations

Dryland ecosystems are some of the most prevalent ecosystems on Earth and have recently shown stress indicators from climate change. These water-limited systems are vulnerable to increases in temperature and changes in precipitation, especially when looking at carbon cycling dynamics across biological sol crusts and vegetation mortality patterns. This dissertation aims to 1) evaluate how precipitation dynamics, vegetation location, and microclimate conditions influence biological soil crust carbon conditions, and 2) evaluate how topographic influences drive patterns of plant mortality during prolonged drought on the Colorado Plateau. Using high-resolution monitoring of long-term NEE chambers, we found that intermediately disturbed biocrusts are …