Digital Commons Network^™

How And Why Preservice Mathematics Teachers’ Respond To Students’ Statistical Thinking, Radhika Pathak Kharel

Theses and Dissertations

Researchers have found that how preservice teachers (PSTs) respond to students' thinking is crucial to their students' learning and to PSTs' own teaching effectiveness. Although there are some research studies on how teachers respond, there is relatively scarce research on why PSTs respond to students’ thinking the way they do. Such understanding is crucial for designing mathematics methods courses and other professional development opportunities that enable PSTs to create more thoughtful and effective teaching plans. I examined how and why PSTs respond in-the-moment to students’ statistical thinking. The study involved 16 PSTs who enrolled in a middle school mathematics methods …

Strike And Error: Assessing The Skill Level Of Crafters Using Lithic Blade Cores, Charles Roelant

Theses and Dissertations

The purpose of this research is to ascertain whether or not the skill level of crafters can be assessed by the errors visible on the Hopewell cores used to make stone blades. This assessment was carried out using four points of focus; core shape, blade length, stepping mistakes and termination errors. This assessment was carried out on twenty-nine cores from the Crane site and nineteen cores from Mound house. Total error rates were used to assign cores to three different skill levels, experienced, intermediate, and novice. The assessment of these blade cores illustrates that skill can be observed, and that …

Interactive Effects Of Bti Larviciding And Predation On Culex Pipiens And Its Ephemeral Pond Communities, Jaclyn S. Everly

Theses and Dissertations

Populations of adult vector mosquitoes can be controlled by reducing larval mosquito abundances in aquatic habitats. This can be achieved via predation by introduced or naturally-occurring enemies (i.e., biocontrol or conservation control) or by applying pesticides to larval mosquito habitats (i.e., larviciding). The larvicide Bacillus thuringiensis israelensis (Bti) is commonly applied to ephemeral ponds to control populations of Culex pipiens mosquitoes that vector West Nile virus. However, there is concern that Bti may directly or indirectly harm non-target organisms such as dragonfly and damselfly naiads, which provide a natural source of mosquito biocontrol. Bti or predators may also induce positive …

The Effect Of Sex On The Signal Transmission Of Duetting Bay Wrens, Rachel C. Schinzler

Theses and Dissertations

During communication, senders send signals for their benefit to elicit a behavioral response from a receiver. Acoustic signals are efficient for long-distance signaling; however, they are influenced by environmental features, such as foliage density, humidity, temperature, and time of day. Individuals can overcome these challenges by using signals with a trajectory of peak frequency, frequencies, volumes, and timing best suited to signal transmission in their environment. Signal transmission has been studied at the species level; however, not much is known about sex differences within the same species. Duetting species provide a useful system for examining sex-specific challenges in transmission, as …

An Evolution Of Drag In Theatre: A Historical Reflection, Krista Peters

Theses and Dissertations

This thesis will serve as an overarching analysis and historical discussion on the art of drag within the traditional theatrical space. By employing queer theory, I will analyze how the use of drag has evolved throughout the history of Broadway and the United States and how it is responding to the contemporary social attitude. Drawing from the arguments of Butler, Lorde, Rich, Foucault, and others, this thesis uses historical survey to examine the direct representation of drag in theatrical spaces in conjunction with each representation’s sociopolitical and cultural environments. Sociopolitical contemporary contexts of each representation influence not only the form …

Promoting Emotion Regulation: A Group Based Program For Children With Autism Spectrum Disorder And Their Caregivers, Emily Jasinski

Theses and Dissertations

Emotion regulation skills lay the foundation for effective social interactions and future success. Children on the autism spectrum experience greater difficulties regulating their emotions than their neurotypical peers, leading to difficulties in social and academic settings. Therefore, it is essential to directly teach these children emotion regulation strategies. Additionally, autistic children often have difficulties generalizing what they have learned from one setting to another, and as such it has been helpful to involve caregivers in their treatment. Currently, the scant research that exists primarily describes emotion regulation interventions implemented in individual settings, which are both time intensive and expensive. One …

Theoretical Analysis Of Filtering And Smoothing Techniques In Stochastic Time Series, Kaosarat Bola Azeez

Theses and Dissertations

Polynomial-preserving linear filters are fundamental tools for smoothing and trend extraction in noisy time series, particularly when the objective is to reduce short-run variation without distorting underlying low-degree structure. This thesis develops a general framework for such filters based on local polynomial approximation and least-squares estimation. In particular, we establish that the resulting estimators can be represented as symmetric linear filters whose weights satisfy moment conditions that ensure exact polynomial reproduction up to a specified degree. Building on this framework, we derive explicit coefficient vectors for several classical smoothing filters, including the Savitzky-Golay filters SG(5,2) and SG(7,3), as well as …

Investigating Phosphorus Load Trends And Driving Factors In Illinois Watersheds Using Machine Learning Algorithms, Hannah Lartey

Theses and Dissertations

Phosphorus (P) pollution in Illinois watersheds has become a significant water quality concern. Recent studies have shown increasing concentrations in streams and rivers, leading to eutrophication, which damages aquatic ecosystems and threatens human health. This study examines temporal trends in total phosphorus loads across 79 monitoring stations in Illinois from 1979 to 2020 and identifies the main environmental factors that influence P load variability. Trend analyses were conducted using the nonparametric Mann-Kendall and Sen’s slope methods. GIS-based climate, hydrology, and soil property datasets were assembled for each monitoring station. These datasets were used to build machine learning models using the …

Bridging The Gap Between Instruction To Application: Piloting Of Trauma-Informed Care Intervention For Pre-Service Teachers, Meredith Spraggon

Theses and Dissertations

This study examined pre-service teachers’ (PSTs) knowledge, attitudes, and application of trauma-informed care (TIC) practices following a targeted training intervention designed by the researcher. The intervention included an introduction to trauma, it’s impacts on young people, key principles of TIC, recognizing the signs of trauma within the classroom and creating a trauma-informed classroom, culturally responsive TIC practices, as well as resilience factors. Participants included N = 48 undergraduate PSTs enrolled in a teacher preparation program at a large Midwestern university. Participants’ age ranged from 18 to 26 years old (M = 19.73, SD = 1.41). Slightly more than half of …

Teaching And Reading As Meaning-Making, An Intervention To Support Underserved Students In An English Language Arts Classroom, Kelly G. Adkins

Theses and Dissertations

This teacher-research study, conducted during a nine-week choice reading unit in my high school English Language Arts (ELA) classroom, explores how adjusting my reading instruction influences all students’ engagement with reading and their identities as readers, especially those underserved by systems of schooling that prioritize teaching reading as a set, evaluated procedure. Building on others’ research that affirms the positive correlation between students’ choice in reading and increased engagement, I pursued the following research question: What does it mean to take up a teaching practice that opens, responds to, and extends students’ meaning-making of literary texts? I used qualitative methods …

Leading The Temporary Workforce: Leadership Communication And Adaptation Among Seasonal Employees, Alfred Kwabena Obiri

Theses and Dissertations

Seasonal employees constitute an essential yet understudied workforce sustaining organizational operations during peak demand periods across industries. Despite the growing organizational reliance on temporary employees, organizational communication studies have primary focused on permanent employees with extended socialization periods, leaving important questions about how leadership communication operates in compressed timeframes inadequately addressed. This qualitative study examined how leadership communication practices shape seasonal employees’ adaptation, belonging, and morale within the temporal constraints characteristic of temporary employment. Drawing on organizational socialization theory, leader-member exchange theory and cultural dimensions, this study employed semi-structured interviews with 19 seasonal employees across hospitality, camp, retail, and education …

High-Resolution Mapping Of Soil Moisture Variation Using Uas Thermal And Multispectral Imagery, Jackline Amma Timah

Theses and Dissertations

In agricultural landscapes, soil moisture regulates hydrologic partitioning, nutrient transport and water quality, land-atmosphere energy exchange that shapes local climate, and ecosystem resilience. However, traditional monitoring approaches, such as in-situ sensors and satellite imagery, often lack the spatial resolution required to capture fine-scale soil moisture variability. This study evaluated whether unmanned aerial system (UAS)-derived thermal, multispectral, and terrain variables can capture fine-scale spatial variability in volumetric water content (VWC) within an SRB in central Illinois.

High-resolution imagery was collected and paired with 50 field-measured VWC observations. Land surface temperature (LST), vegetation indices (NDVI and NDRE), spectral bands, and slope were …

Comorbidity And Violence: What Role Does Resilience Play In Preventing Violent Acts?, Madeline J. Petit

Theses and Dissertations

The conjunction of substance use disorders, mental illnesses, and violence has been shaped through traditional risk-centered models, yet these approaches fail to explain why most individuals do not engage in violent behavior despite being high risk. This study aims to investigate how resilience may buffer the criminogenic effects of comorbidity and help understand the majority of those at risk who remain nonviolent. The data for this study is drawn from the MacArthur Violence Risk Assessment Study, which consisted of 2.255 person-waves, as the data examined comorbidity across 5 waves, consisting of 451 participants in each wave.Each participant in each wave …

The Role Of Body Composition In Predicting Fitness Performance Of Law Enforcement Officers, Taylor J. Parmentier

Theses and Dissertations

Law enforcement officers (LEOs) perform physically demanding tasks such as foot pursuits, lifting, carrying, dragging, and physical restraint. Effectively performing these duties requires significant muscular strength, endurance, and cardiorespiratory fitness. Lower fitness levels pose risks for reduced health, performance, slower recovery, increased fatigue, and potentially affecting decision-making under strenuous conditions. The purpose of this study was to identify the strongest predictor of physical fitness performance among active-duty LEOs. Body composition analysis and a comprehensive fitness evaluation of twenty-nine male LEOs (age: 36.2 ± 9.3 years, body mass (BM): 95 ± 13.7 kg, height: 1.8 ± 0.1 m) was completed. The …

An Application Of Molecular Dynamics To Hed Plasma Physics: Point And Group Defect Diffusion In Coulomb Crystals, Levi Webb

Theses and Dissertations

Molecular dynamics (MD) simulations are used to explore the microscopic behaviors of complex systems that cannot be easily studied experimentally. In particular, the microphysics of high energy density (HED) astrophysical plasma environments remain inaccessible by modern experiment---even in laser facilities, these plasmas exist only on short timescales that do not lend easily to investigation. The diffusion of point and group defects through crystallized plasmas in the cores of white dwarfs and neutron star crusts, called Coulomb crystals, has potentially macroscopic implications for the evolution of these bodies. Thus, I employ the widely-used MD code LAMMPS to simulate small Coulomb crystal …

Informing Policies: Examining Socio-Cultural Factors Influencing The Prevalence Of Gender-Based Violence, Patricia M. Ebubechukwu

Theses and Dissertations

Despite growing policy attention and legal reforms, Intimate partner violence (IPV) remains a persistent public health and human rights concern in Nigeria. This study examines the socio-cultural influences on the prevalence of gender-based violence among ever-married women in Nigeria using data from the 2024 Nigeria Demographic and Health Survey (NDHS). Drawing on a nationally representative sample of 19,863 women aged 15 to 49, the research investigates how geopolitical zone, internalized gender norms, religious affiliation, educational attainment, and household wealth shape women’s experiences of physical, sexual, and emotional IPV. Guided by social norms theory and the ecological model of violence, the …

Managing Multi-Drug Resistance: An Evolutionary Game Theory And Optimal Control Approach, Shukhrat Nasrulloev

Theses and Dissertations

Multi-drug resistance is an evolutionary process in which treatment eliminates sensitive cells, allowing resistant clones to dominate. This thesis investigates this process using a framework integrating population dynamics, evolutionary game theory, and optimal control theory. We develop a two-population logistic growth model describing competition between drug-sensitive and drug-resistant cells under treatment, construct dose-dependent payoff matrices and replicator dynamics to characterize evolutionary competition, and derive a critical drug level D_crit = (r_S - rR)/(dS - d_R) at which resistant cells gain a fitness advantage. An optimal control problem is formulated via Pontryagin's Maximum Principle to identify schedules …

Enhancing Hospital Length Of Stay Using Ai Agent Modular Capabilities, Dami Fred

Theses and Dissertations

Hospital Length of Stay (LOS) analysis is essential for managing hospital efficiency and financial performance, yet the analytical depth required remains inaccessible to many organizations due to technical and resource constraints. This thesis introduces the AI Agent Modular Capabilities (AIAM) framework, which decomposes LOS analysis into discrete, codifiable capabilities integrated into a single skill activatable with one prompt. Seven AI Agent Modular Capabilities were developed using a Work Breakdown Structure and tested against a simulated hospital scenario across three successive skill versions. Results demonstrate that the packaged AIAM skill produces comprehensive, consistent, multi-section LOS analyses from a single interaction, outperforming …

Elite Cues Vs. Economic Vulnerabilities: What Explains Isolationist Foreign Policy Attitudes Among Americans?, Sabyasachi Karmaker

Theses and Dissertations

This thesis examines whether contemporary isolationist foreign policy attitudes among Americans are better explained by elite political cues or by economic vulnerabilities. Using data from the 2024 American National Election Study (ANES), the study also examines which mechanism holds more explanatory power in shaping isolationist views. The findings show that both elite cues and economic vulnerabilities are associated with isolationist attitudes, but elite cues have greater explanatory power. These results suggest that contemporary American isolationism is more strongly associated with political identity and elite messaging than with economic hardship alone.

Symmetry In Latin Hypercubes, Levi Neiburger

Theses and Dissertations

Let [n] = {1, ..., n}. A hypercube H of order n and dimension d is a d-dimensional array whose nᵈ cells are indexed by [n]ᵈ. A hyperplane in H is obtained by fixing one coordinate, while allowing the remaining d–1 coordinates to vary. We wish to color each cell of H from a palette of n^d-1 colors such that each hyperplane is polychromatic.

Our main result is the following. Let n be sufficiently large. There exists a symmetric coloring of the d-dimensional hypercubes of order n whose all hyperplanes are polychromatic if and only if: …

Cover Crop Effects On Soil Porewater Nutrients And Hydrothermal Properties, Md Mahadi Hasan

Theses and Dissertations

Adoption of winter cover crops in the U.S. Midwest may reduce nitrogen (N) and phosphorus (P) leaching from soils, potentially shrinking the hypoxic zone by limiting nutrient runoff into the Gulf of Mexico. To evaluate the impact of selected winter cover crops on soil porewater N and P concentration, a field study was conducted at the Illinois State University Research Farm (ISURF) and the Western Illinois University Research Farm (WIURF). The experimental design was a block experiment with four replications.  Cover crop treatments included a winter fallow, wild pennycress (WPC), golden pennycress (GPC), cereal rye (CR), annual ryegrass (AR), and …

Type Ii Diabetes Treatment Comparison Via Compartment Modeling, Abigail M. Collins

Theses and Dissertations

Type II diabetes mellitus affects one in ten adults worldwide, yet the effects of treatment type and adherence level on developing complications and quality of life have not been well characterized at the population level, and mathematical modeling offers a structured way to examine these dynamics. This thesis adapts the Boutayeb et al. (2004) model to incorporate dynamic treatment types and levels of adherence, producing nine scenarios in which complication development rate and complication recovery rate differed, to compare peak complications and quality of life across treatment and adherence conditions. Using a system of ordinary differential equations and compartment modeling, …

From Deference To Dialogue: How International Gtas From High Power Distance Cultures Adapt To U.S. Classroom Dynamics, Deborah Akua Afi Appiah

Theses and Dissertations

International graduate teaching assistants (GTAs) from high power distance cultures play a significant role in undergraduate education at U.S. universities, yet they face challenges that go well beyond language proficiency. Coming from educational backgrounds where teacher authority is unquestioned and hierarchical, these GTAs must navigate American classrooms that operate on fundamentally different assumptions, where authority is earned rather than assumed, informality is the norm, and students expect to question, negotiate, and be personally known by their instructors. The present study examined how eighteen (18) international GTAs from seven (7) high power distance countries perceived and adapted to these differences while …

Thinking Machines: Cybernetics, Artificial Intelligence, And Technological Anxiety In The American Cold War, Erin Mae Wilcox

Theses and Dissertations

Following the Second World War, cybernetics emerged as a cross-disciplinary study in philosophy, neurophysiology, electrical engineering, and mathematics. Cyberneticists proposed the formal study of the man-machine analogy; that is, to equate biological structures to a complex mechanical system. Drawing from this analogy, cyberneticists used programmable digital computers to emulate the functions of the human brain. The study of artificial intelligence emerged within this cybernetic discourse in the early 1950s; yet, by the mid-1960s, the two disciplines suffered a methodological fracture. Drawing from a tradition generated by this fracture, historians have traditionally examined cybernetics and artificial intelligence in isolation from one …

Predicting Job Performance: The Incremental Validity Of Cognitive Reflection Tests Over General Cognitive Ability And Conscientiousness., Olivia Earll

Theses and Dissertations

Cognitive reflection is the ability to suppress intuitive thinking (Type 1) in favor of deliberative, analytical thought (Type 2). This study investigated cognitive reflection as a predictor of supervisor-rated job performance, exploring its incremental validity over general cognitive ability and conscientiousness. Results indicated that all three variables positively predicted job performance, with cognitive reflection explaining a significant, unique portion of the variance. Exploratory analyses confirmed that this predictive validity remained consistent across industry, age, and sex. Furthermore, cognitive reflection significantly moderated the relationship between general cognitive ability and job performance. These findings highlight the value of deliberative reasoning as a …

Data Defines Success: Algorithm For Dataset Quality Assessment In Deep Learning For Malware Detection, Matei Ionescu

Theses and Dissertations

The field of artificial intelligence is based upon the premise of constructing architectures through which to propagate training data. However, the majority of existing research literature is focused on architecture. While necessary, the attention devoted to the architecture should not so precipitously exceed that of the data. It should be noted that this disparity is not without reasonable cause. Data quality is often exceedingly difficult to verify due to particularities of the field or subfield; LLM repositories of text are distinct from image recognition pictures of dog breeds which are distinct from EEG waveforms of human brains which are distinct …

Fostering A Growth Mindset In Mathematics: Faculty And Student Experiences, Yolanda G. Rush

Theses and Dissertations

According to the Center for Community College Student Engagement (2019), many students attending two-year institutions need productive persistence strategies, including the development of a growth mindset. Although some growth mindset interventions have been effective in improving academic achievement among students (Boaler, 2016; Canning et al., 2024) and persistence (Lewis, 2019) among students, especially those with developmental needs (Suh et al., 2019) and those in mathematics, little is known about the experiences of students and teachers (i.e., students’ perceptions of teachers’ intentions and implementation) as teachers work to foster a growth mindset culture (Murphy et al., 2021). In this dissertation, I …

Rhetoric Of Realignment: An Analysis Of Trump's 2024 Campaign Rhetoric, David Valadez

Theses and Dissertations

When political coalitions include groups with opposing policy goals, leaders face a challenge: satisfying all constituencies without making commitments that alienate essential supporters. The present study examines strategic ambiguity in the form of deliberately vague political messaging as a tool for managing this challenge. Combining rhetorical analysis with selectorate theory, which explains how leaders achieve and maintain power through reward distribution, the research analyzes Donald Trump’s 2024 Republican National Convention acceptance speech, focusing on immigration rhetoric.

The analysis reveals that Trump’s ambiguity was selective rather than habitual. On immigration, where tech/corporate interests wanting skilled workers clashed with nationalist groups demanding …

Staff Attitudes Toward Ai Adoption At A Private Research University, Ashley C. Smith

Theses and Dissertations

This study addresses the limited research on university staff attitudes toward artificial intelligence use and adoption. Using the Unified Theory of Acceptance and Use of Technology (UTAUT) research framework, the General Attitudes towards Artificial Intelligence Scale (GAAIS), and quantitative survey methodology, the study examines the attitudes of higher education staff toward AI, specifically examining whether demographic or professional characteristics are factors. The findings indicate that staff had moderately negative attitudes toward AI while also expressing some concerns. The results suggest that more resources and support for AI are needed for staff to address concerns. It also suggests that construct-level analysis …

Constructing And Deconstructing Homelessness: Challenging The Stigmatization Of The Unhoused Through Lived Experience, Brenna Jones

Theses and Dissertations

As homelessness rises across the United States, public discourse plays an important role in shaping how the housing crisis is understood and addressed. This study examines how homelessness is constructed through local media narratives and how these constructions shape the experiences of unhoused individuals. Using a case study of Greater Bangor, Maine, this research combines a critical content analysis of 315 news articles from the Bangor Daily News (2020-2025) with in-depth interviews with 18 unhoused and precariously housed individuals. The findings demonstrate how media portrayals construct homelessness as a stigmatized identity associated with disorder, addiction, and danger. These narratives contribute …