Digital Commons Network^™

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 …

The Perceived Leadership Attributes Of Chief Academic Officers, Lowa Mwilambwe

Theses and Dissertations

Using Moss’s Leadership Attributes Inventory (LAI), which contains 37 attributes categorized under 6 core leadership roles (inspire a shared vision and establish standards; foster unity, collaboration, and ownership; exercise power effectively and empower others to act; exert external influence to set the right context, establish an environment conducive to learning; and satisfy the job-related needs of individuals in the organization), and descriptive and inferential statistics, this study examined the perceptions of Chief Academic Officers (CAOs) leadership at four-year public colleges and universities from the perspectives of the CAOs who self-evaluated themselves, and their colleagues (presidents, vice presidents, deans, and other …

Middle School Students' Initial Ideas And Their Connections In Proportion Word Problems, Carrie Ann Lawton

Theses and Dissertations

In this dissertation study, I sought to identify the initial ideas that middle school students had when approaching Multiple Batches and Variable Parts proportion word problems, as well as the connections they made among those initial ideas. I conducted semi-structured individual and paired interviews with 13 sixth- and seventh-grade students at the end of their school year. I then used the Knowledge-in-Pieces theoretical perspective to identify knowledge resources that the participants accessed when approaching the tasks, prior to any intervention on my part.

Through my analysis, I identified 18 initial ideas that the middle school students employed when solving the …

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 …

Transgender Representation In Japanese Video Games And Their Corresponding American Fandoms, Aj Abad

Theses and Dissertations

This thesis explores transgender and gender non-conforming characters within Japanese media and their corresponding American fandoms. In this thesis, I use a methodology named trans negotiated readings, stemming from Stuart Hall’s theory of dominant codes and negotiated readings. Through focusing on two characters from two different Japanese media—Arashi Narukami from Ensemble Stars!! and Mizuki Akiyama from Project Sekai: Colorful Stage Feat. Hatsune Miku, I uncover some of the dominant codes encoded the original source material. After, I also examine their corresponding American fandoms, uncovering the negotiated readings from the fanbase. This thesis attempts to show different cultures’ interpretation of transgender …

Tensions And Possibilities: A Study Of International Graduate Students' Encounters With Critical Pedagogy In The United States, Munchuree Kaosayapandhu

Theses and Dissertations

This study investigates the question, “How do international graduate students experience and negotiate their encounters with critical pedagogy across time and educational contexts?” The research was motivated by the researcher’s own experience in encountering critical pedagogy and prior studies focusing on critical pedagogy from the teacher perspective. This left a gap in understanding the student experience. The research used the phenomenology paradigm. The participants included six international graduate students in education studies programs. Using the phenomenological interview approach, each participant was asked over a series of three interviews about past experiences of education, their initial encounters with critical pedagogy and …

Children’S And Adult Perspectives On Mental Health In Children’S Youth Literature And Media, Edcel J. Cintron-Gonzalez

Theses and Dissertations

My dissertation extends existing work on mental health in children’s literature to examine the different narratives strategies that text, film, and media for young audiences use to connect childhood, caregiving, and emotional wellbeing. Three areas of scholarship—children’s literature scholarship, health humanities work, and feminist care ethics—inform my project. Overall, I am interested in how a variety of genres for young readers represent mental health not only as an individual experience, but also as something shaped by family, culture, community, and adult-child relationships. It is therefore important to delineate the different concepts and frameworks that help make sense of how mental …

Meet Me In The Middle: Transformational Coaching As A Strategy To Disrupt Middle School Teacher Attrition, Aimee J. Pettit

Theses and Dissertations

Teacher attrition among early-career educators remains a persistent challenge in middle school settings, particularly in schools serving historically marginalized student populations. At Nevermore Academy Middle School, newly hired teachers continue to leave the profession despite the implementation of traditional onboarding and mentoring programs, citing challenges with classroom management, limited societal respect for the profession, emotional exhaustion, and inadequate compensation. High rates of teacher turnover disrupt instructional continuity and disproportionately affect students from low-income households, many of whom are students of color. This qualitative study examined the lived experiences of new teachers at Nevermore Academy and explored how participation in transformational …

Transforming Instructional Spaces: Professional Development And The Design Of Culturally Responsive Classroom Displays, Tisha M. Ortega

Theses and Dissertations

This qualitative action research study examined how secondary teachers at a Midwest high school engaged in the process of designing classroom displays for culturally responsive teaching. The semester-long study explored how teachers’ understandings of culturally responsive teaching informed their design decisions, how they engaged students with display content, and how ongoing reflection and participation in a professional development study group shaped their practices over time. Data were collected through interviews, surveys, study group transcripts, and photographs of classroom displays.

Findings indicated that participation in the study group served as both validation and inspiration, supporting teachers in refining their approaches to …

Exploring Culturally Responsive Faculty Practices That Support Student Success In Community College Classrooms, Mary Catherine Flynn

Theses and Dissertations

This qualitative study explored the culturally responsive teaching practices used by six community college faculty and instructors in their in-person courses. Faculty and instructors taught courses included in certificate and degree programs related to early childhood education, human services, and criminal justice at one midwestern community college. Specific content areas included sociology, political science, and child development. Data collection for this study included comprehensive interviews with each instructor, an analysis of documents including syllabi, student assignments, and assessments, and multiple classroom observations. This study was anchored in a theoretical framework based on the constructs of culturally responsive teaching practices. Each …

Fuchs' Problem For Quasi-Cyclic Groups, Dalen F. Elliott

Theses and Dissertations

Fuchs’ problem asks which groups can arise as the group of units of a ring. Although the finite cyclic case has been completely classified, much less is known in the infinite setting. This thesis contributes to this problem by investigating quasi-cyclic. (Pr¨ufer) groups and their finite direct products. We show that for every odd prime p, there is no commutative ring R such that R×∼= Cp∞. This obstruction arises from characteristic restrictions and the algebraic structure of finite fields. More generally, we prove that any group in which every element has order a power of an odd prime p and …

"Aren't You Old Enough To Know Better?": Judgments Surrounding Infidelity As A Function Of Age And Gender, Josephine Kirby

Theses and Dissertations

Relationships are often deeply affected by infidelity on several indicators such as marital satisfaction, forgiveness, and relationship longevity. With older adults often stereotyped as being asexual and women often being judged more harshly due to a sexual double standard, how do people perceive these groups in the context of infidelity? The purpose of my study was to investigate whether perceptions and judgments surrounding infidelity are affected by the age and gender of the person who committed infidelity. Using an experimental vignette method, participants were randomly assigned one version of a hypothetical couples’ counseling intake assessment form that, in part, described …

From Global Norms To Local Implementation: The Sendai Framework, Disaster Risk Reduction, And Human Rights In The United States, Madelyn Schutte

Theses and Dissertations

This study examines the extent to which the Sendai Framework for Disaster Risk Reduction and a human rights-based approach (HRBA) are reflected in local level hazard mitigation plans in the United States. This study utilizes a directed qualitative content analysis of a local hazard mitigation plan, using McLean County, Illinois, as a single case study. The Sendai Framework and a HRBA are moderately reflected in McLean County’s hazard mitigation plan, with the most significant omission being a comprehensive discussion of the disproportionate risks faced by vulnerable populations. The results indicate that FEMA guidelines for hazard mitigation plans likely do not …

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, …

Turning 30 In 600 Feet, Tate Lewis-Carroll

Theses and Dissertations

This thesis is a poem; it records fourteen consecutive months of the poet’s life through rigorous, daily typing habits with nonoptimal tools and material: a typewriter and 600 feet of receipt paper. Through the adoption of these conditions, and through the dailiness of the habit, this thesis crips and deploys a poetics of chronic impediment for accessing constraint and its role in making. This thesis includes a critical preface which explores some of the poet’s specific relationships to chronic pain, both physical and emotional; forgetfulness and dissociation; and disruption by remembering a decade-long flare of chronic illness and abuse. With …

The Impact Of Sports Betting Legalization On Marital Status, Hosea Gitonga Njogu

Theses and Dissertations

This study examines the causal Impact of sports gambling legalization on marital stability in the United States using data from the Current Population Survey Annual Social and Economic Supplement (CPS-ASEC) and the American Community Survey (ACS) from 2013 to 2024. The analysis leverages variation in the staggered adoption of state-level sports gambling laws and applies two-way fixed effects, event-study, and the Callaway and Sant’Anna (2021) difference-in-differences estimators, controlling for geographic and individual characteristics. Legalization increases divorce rates by 0.42 percentage points in the CPS and 0.51 percentage points in the ACS, corresponding to increases of 2.4% and 2.6%, or approximately …

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 …

Modeling The Impact Of Projected Water Demand On Groundwater Flow And Transport In The Mahomet Aquifer, Christabel Chinonye Abugu

Theses and Dissertations

The Mahomet Aquifer is a vital groundwater resource in east-central Illinois, supporting municipal, agricultural, and industrial water use. With projected changes in water demand driven by population growth and future socioeconomic conditions, assessing the long-term response of the aquifer is critical for sustainable groundwater management. Increased pumping to meet future demand may contribute to groundwater-level decline, intensified cones of depression, and altered groundwater-flow paths relevant to contaminant migration. This study addressed two research questions: (1) how projected changes in groundwater demand affect groundwater levels in the Mahomet Aquifer, and (2) how projected demand influences groundwater-flow paths relevant to contaminant migration. …

The Acculturation Of International-Born Student Affairs Administrators In The United States, Amber Joy Webb

Theses and Dissertations

This qualitative narrative study explored how international student affairs administrators in the United States experience acculturation. Guided by Berry’s (1997) fourfold model of acculturation, the study examined how participants experienced assimilation, integration, separation, and marginalization as they navigated their professional roles, institutional expectations, and cultural identities. Eight participants, representing diverse countries of origin, institutional types, and professional roles, were interviewed using a semi-structured interview guide. Data were analyzed using Braun and Clarke's (2006) framework. Findings indicated participants employed multiple, context-dependent acculturation strategies rather than adhering to a single strategy. Assimilation emerged as a strategic process for establishing professional legitimacy, navigating …

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 …

Understanding Faculty Perceptions Of Shared Governance At A Four-Year Public University: A Case Study Of The University Of Ghana, Patrick Amponsah

Theses and Dissertations

The purpose of this qualitative single-case study was to explore how faculty at the University of Ghana perceive and experience shared governance, how it is practiced institutionally, and what outcomes they associate with it. Although shared governance is widely promoted as a democratic and collegial model of decision-making in higher education, its implementation remains underexamined. The study interviewed twelve (12) full-time faculty members who worked at the University of Ghana. Thematic analysis revealed ten interrelated themes, including structured participation with limited influence, shared governance as an opportunity for faculty input, and the presence of both collaborative attitudes and formal committee …

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 …

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 …

Discordant Molecular Biomarkers In Unfavorable Intermediate-Risk Localized Prostate Cancer, Justin R Gregg, Steven Jay Frank, Karen Hoffman, Ryan Park, Comron J Hassanzadeh, Seungtaek Choi, Sean Mcguire, Quynh-Nhu Nguyen, Daniel N Costa, Patricia Troncoso, Sumit K Subudhi, Shuang George Zhao, Curtis A Pettaway, Paul Corn, Chad Tang, Phuoc T Tran

Faculty, Staff and Students Publications

No abstract provided.

Recent Insight And Perspective Of Marine-Inspired Biopolymers For Wound Healing Applications - A Review, Muhammad Umar Aslam Khan, Saiqa Yousaf, Abdalla Abdal-Hay, Mohd Faizal Bin Abdullah, Sahar Madani, Muhammad Shahzad Zafar, Goran M. Stojanović, Lobat Tayebi

Electrical & Computer Engineering Faculty Publications

There is an increasing necessity for advanced, sustainable, and biocompatible materials for wound healing as therapeutic and diagnostic products. Marine environments, characterized by high biodiversity, offer an underutilized source of natural resources with enormous potential for creating novel materials for dressings. This review highlights the revolutionary nature of polymeric biomaterials of marine origin, with a focus on polysaccharides, like alginate, chitosan, and carrageenan; proteins, such as collagen and gelatin. These biopolymers are outstanding in their physicochemical properties, such as biodegradability, bioactivity, and modifiable mechanical strength, which enable their use in wound-healing systems. Besides, these biomaterials may be easily chemically and …

Towards Acoustic Bioindicator Integration In Ai-Based Wildfire Monitoring: A Systematic Review, Sabah Mustafa, Mahsa Mohaghegh, Iman Ardekani, Abdolhossein Sarrafzadeh

Electrical & Computer Engineering Faculty Publications

Wildfires are becoming more frequent, severe, and long-lasting, driving rapid growth in sensor-based and artificial intelligence (AI)-enabled systems for early detection and risk assessment. This article presents a systematic literature review, based on 169 studies screened from 7511 records, of wildfire monitoring approaches using satellite and aerial remote sensing, fixed cameras, wireless sensor networks, and Internet of Things (IoT) platforms combined with machine learning (ML) and deep learning (DL) models for ignition detection, fire-weather indices, spread prediction, and burned-area mapping. The review organizes existing work by sensing modality, spatial and temporal scale, learning task, model type, and deployment architecture, and …

Deep Reinforcement Learning-Enhanced Model Predictive Control Using Dc-Link Energy Modulation For Inter-Area Oscillation Damping In Pmsg-Based Power Systems, Emad M. Elhaji, Shichao Liu, Hicham Chaoui, Osarodion Emmanuel Egbomwan

Electrical & Computer Engineering Faculty Publications

Low-frequency oscillations remain a major concern in modern power systems with increasing penetration of renewable energy sources. Conventional damping methods, such as power system stabilizers and fixed-gain controllers, may not provide sufficient damping for converter-interfaced wind generators under changing operating conditions and disturbances. To address these limitations, this paper proposes a deep reinforcement-learning-enhanced model predictive control (DRL-MPC) framework for damping inter-area oscillations in multi-machine power systems incorporating permanent magnet synchronous generator (PMSG)-based wind turbines. The proposed approach leverages the energy stored in the DC-link capacitor as a fast dynamic buffer to enable supplementary active-power modulation for oscillation damping. A twin-delayed …