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Predictive Factors Of Academic Success During Transition To Undergraduate Studies In Stem Programs In Kansas, Elizabeth L. Butler

Electronic Theses and Dissertations

In tThis dissertation the researcher exploreds the correlations between high school GPA, ACT Math, ACT cComposite scores, and first -semester GPA for first-time freshmen at a mid-sized university in the Midwest. This quantitative correlational study uses multiple regression analysis to discover correlations that may exist between these interval variables. Data for this study was collected through a request to the study site’s oOffice of pPlanning and aAnalysiss at the university and was all archival data at a record level for the students. Data had been collected through the admissions process and was stored in Banner and SLATE, both data management …

“Starlight Suite”: A Compositional Exploration Of The Argo Navis Constellations In Three Movements, Adam Miller

Electronic Theses and Dissertations

This thesis explores a compositional technique in which stellar constellations are arranged upon musical staves in a variety of iterations to create a basis from which to draw melodic, harmonic, and rhythmic material. These raw extrapolations of unaltered notes are then arranged and orchestrated into thematic music for full orchestra, centered around elements from the mythological background behind the constellations used. An accompanying analysis explains the specific applications of this technique within each movement of the work, the significance of each, and the variety of ways in which musical inspiration was drawn from the raw materials. The objective of this …

Geochemical Analysis Of The Eagle Ford Shale In Webb And Dimmit Counties, Tx, Natalie G. Girlinghouse

Electronic Theses and Dissertations

The Late Cretaceous Eagle Ford Shale of South Texas is a mixed carbonate–siliciclastic succession that serves as both a prolific hydrocarbon source and reservoir. This study integrates chemostratigraphy, mineralogical analysis, and elemental ratio proxies to reconstruct depositional environments and assess controls on detrital influx, paleoproductivity, and redox conditions across multiple cores in Webb and Dimmit counties. Major, trace, and redox-sensitive elements were evaluated alongside Total Organic Content (TOC) and carbonate content to identify stratigraphic trends and environmental shifts.

Results reveal distinct geochemical signatures between the Upper and Lower Eagle Ford Shale, with the Lower Eagle Ford characterized by elevated Al-rich …

Structural Geology Of The Brady Mountain Area, Ouachita Mountains, Arkansas: Integrating Field Mapping, Geospatial Techniques, Photogrammetry And 3d Modeling For Structural Analysis, Emmanuel Darko, Zachariah Fleming

Electronic Theses and Dissertations

Much of the Ouachita orogenic belt, representing the deformed Paleozoic rocks flanking the southern margin of the North American craton, is buried beneath post-orogenic Mesozoic and Tertiary sediments composing the Gulf Coastal Plain. The Ouachita Mountains of Arkansas and Oklahoma are the largest areas of outcrop for the Pennsylvanian-age Ouachita orogenic belt, making it an ideal place to study the orogeny. This study focuses on the Brady Mountain area within the Benton Uplift, the orogenic core of the Ouachita Mountains in western Arkansas. The region is comprised of numerous ridges trending nearly east-west and are for the most part densely …

Stars And Shapes: An Investigation Of Stripped Envelope Supernovae Structures Using Spectropolarimetry Observations And Hydrodynamic Models, Sabrina Desoto

Electronic Theses and Dissertations

Supernovae (SNe) are the energetic deaths of massive stars, dispersing heavy elements throughout the galaxies and shaping cosmic evolution across the universe. However, understanding the connections between the evolution of massive stars, their catastrophic demises, and the myriad of observed SNe, remains a fundamental challenge in astrophysics. My work aims to narrow this gap by integrating extensive observational data with advanced hydrodynamical simulations to better interpret SNe observations and understand the origin of their geometry. The observational component utilizes the largest spectropolarimetry dataset of stripped-envelope (SE) core-collapse supernovae (CCSNe) gathered by the SNSPOL project. Analyzing nine Type Ib and eleven …

Principal Quandles, Jesse Parrish

Electronic Theses and Dissertations

This thesis concerns principal quandles and, as a special case, Alexander quandles. A principal quandle is a coset quandle, Q(G,H, f), in which the subgroup H is trivial. If in addition the group G is abelian, then the coset quandle is called an Alexander quandle. The isomorphism types of Alexander quandles were classified [16], and some progress was made on describing the isomorphism types of principal quandles in [14] and [13]. The first part of this thesis applies the ideas used in Holmes’ paper to give a classification of the isomorphism types of principal quandles. The second …

Development Of A Non-Faradaic Impedimetric Biosensor Based On Reduced Graphene Oxide For The Detection Of Brain-Derived Neurotrophic Factor (Bdnf), Mariana N. Martins

Electronic Theses and Dissertations

Neurological disorders affect millions of people worldwide. In the case of Alzheimer’s disease (AD), the rising number of cases significantly increases global healthcare costs. Therefore, early detection of biomarkers at the onset of the disease is essential for early diagnosis. This study presents an electrochemical biosensor designed for the detection of Brain-Derived Neurotrophic Factor (BDNF) in human plasma, incorporating reduced graphene oxide (rGO) to enhance signal sensitivity. Dielectrophoresis (DEP) was employed to deposit rGO flakes on the electrode surface, improving conductivity and sensor performance. Electrochemical impedance spectroscopy (EIS) was used to monitor changes in impedance associated with BDNF binding events, …

Exploring The Impact Of Statistics Course Modality On Student Learning: A Mixed Methods Approach, Becky Kelleman

Electronic Theses and Dissertations

The importance of statistical literacy has become increasingly evident, as individuals grapple with interpreting statistics to inform critical decisions. Despite the recognized significance of statistical literacy, challenges persist in both educators’ and students’ efforts to navigate the complexities of statistics education. The purpose of this study is to explore the impact of different course modalities on undergraduate students’ academic performance in introductory statistics courses. Using Social Cognitive Theory (SCT) as a theoretical framework, this research aims to shed light on the complex dynamics influencing statistical literacy attainment. By addressing gaps and inconsistencies in the current literature, this study seeks to …

High Frequency Dc-Dc Converter Design Optimization, Modeling And Control Based-Wbg Technology., Salah Ahmed Abdullah Eltief

Electronic Theses and Dissertations

The performance of DC-DC power converters is a cornerstone of modern electric vehicle (EV) powertrains, directly governing overall system efficiency, size, cost, and reliability. This dissertation presents a comprehensive performance analysis and optimization of DC-DC converter topologies to determine the most suitable design for high voltage EV applications. The evaluation rigorously compares efficiency, power losses, and physical size under a range of harsh operating conditions. A primary objective is to leverage Wide Bandgap (WBG) semiconductors, specifically Silicon Carbide (SiC), to push the performance boundaries of power conversion. While SiC devices are known for their superior material properties, a clear understanding …

Doughnut Economics And Strong Sustainability: Rethinking The Role Of Financial Investment, Isabelle Pierotti

Electronic Theses and Dissertations

This thesis investigates how private investment could align doughnut economic framework. Doughnut economics is a strong sustainability economic framework where the economy operates within planetary boundaries while ensuring social equity. Theories of sustainable development, weak sustainability, and strong sustainability are discussed to provide theoretical context for doughnut economics and mainstream economics. The analysis concludes that conventional, profit maximizing private investment does not support a doughnut economics system by supporting the depletion of natural resources and exacerbating social issues. Sustainable mainstream investment also fails to support a doughnut framework. Lastly, while impact investment is theoretically committed to social and financial returns, …

An Auto-Criticism: Exploration Of Professional Development For Secondary Science Educators, Mellissa Ann Pfaff

Electronic Theses and Dissertations

This auto-criticism investigates the benefits of experiential professional development for science educators by examining the reflective journey of one teacher-researcher—me—through multiple immersive learning experiences. Using narrative journaling and qualitative analysis, this study captures the influence of these experiences on my identity, instructional design, and ability to create experiential learning opportunities for students.

Rather than approaching professional development as a checklist of strategies, this research seeks to illuminate how deeply engaged, hands-on learning can transform teaching from routine delivery to embodied practice. Thematic coding revealed shifts in curriculum planning, increased responsiveness to student inquiry, and renewed clarity around the purpose of …

Capacity, Allocation And Update Dynamics Of Human Memory Systems, Shaoying Wang

Electronic Theses and Dissertations

Information is encoded and stored in three types of memory: sensory memory (SM), short-term memory (STM), and long-term memory (LTM). SM has a large capacity but retains information for only a brief period. When information transfers to STM, only a limited amount can be stored. Information in STM can then be transferred to LTM, which has a much larger capacity and longer retention time. STM is often conceptualized as working memory (WM) to highlight its role in active information processing. Due to the limited capacity of STM, it is commonly believed that STM serves as the bottleneck for information processing. …

Archaeological Predictive Meta-Modeling In Pre-Columbian Mexico, Peter Stamm

Electronic Theses and Dissertations

Archaeological Predictive Modeling stands firmly as an important tool for Archaeologists to predict undiscovered sites from civilizations all across the globe. While powerful, this methodology is not without its own set of qualms. Striking a balance between pure a data-driven approach while also observing leading expert theories can be a complicated task. Going further, deciding on the specific domain of features to emphasize or overlook can be a challenge within itself, as one misstep can drastically change the output of model, sometimes for the worst. In addition, creating models that can expose their reasoning process can be rather difficult to …

Reproducibility In Modeling Of Knee Joint Mechanics, Maryam Nazem

Electronic Theses and Dissertations

Computational modeling of knee joint biomechanics can provide valuable insights into joint function, injury mechanisms, and patient outcomes, and can support surgical planning and informed clinical decision-making. However, achieving consistent and repeatable results, or reproducibility, is a significant challenge that affects the credibility of these models. This thesis addresses reproducibility through two studies related to the KneeHub Project, which is a multi-institutional collaboration designed to investigate reproducibility in finite-element modeling of the knee.

The first study involved model benchmarking, where predicted results of the calibrated models were compared with the experimental data to evaluate model reproducibility. While all models replicated …

The Effect Of Perceived Principal Leadership Styles And School Type On Elementary Teacher Self-Efficacy, Karen M. Gonzalez

Electronic Theses and Dissertations

The purpose of this study was to explore the effect of perceived principal leadership styles and school type on elementary teachers’ self-efficacy. The study examined two research questions. The first examined differences between teachers’ self-efficacy in Title 1 and non-Title 1 schools, and the second examined differences in teacher self-efficacy and perceived principal leadership styles (authoritarian, democratic, and laissez-faire). The convenience sample included 129 elementary teachers from social media teacher groups that taught in various Title 1 and non-Title 1 school districts. I used a quantitative, causal-comparative method to collect data and survey questionnaires that identified trends in leadership styles …

African American Female College Students’ Experiences At Predominately White Institutions, Sh'nita Louise Mitchell

Electronic Theses and Dissertations

African American women who attend predominantly White institutions (PWIs) have historically encountered systemic challenges that include racial isolation, microaggressions, a lack of cultural understanding, and insufficient institutional support. These barriers often impact their sense of belonging, academic persistence, and overall success. I aimed to explore the lived experiences of African American women who graduated from PWIs to understand how these women navigate institutional structures and sustain their academic journeys. I aimed to examine the unique challenges and supports experienced by African American women, and to identify factors that contribute to or hinder their persistence and success at their PWI. The …

Beyond Leadership Turnover: Examining The Relationship Between Principal Supervisor Coaching And Student Academic Performance, Margo L. Nottingham

Electronic Theses and Dissertations

Schools that maintain stable leadership report increased student achievement outcomes. The problem is that over 21% of U.S. principals leave their positions in the first year in high-poverty contexts. Principals leave their roles due to high job demands, inadequate support, and limited professional development, leading to decreased performance and poor school culture. The problem examined in this study was the lack of evidence on whether coaching principal supervisors contributed to improved student achievement outcomes. The study aimed to determine whether coaching principal supervisors through a regional service center was associated with higher student achievement in low-performing elementary and middle schools. …

Pre-K Teachers’ Perceptions About Professional Learning: Influence On Instructional Methods, Classroom Management Skills, And Student Outcomes, Victoria Abakah Korsah

Electronic Theses and Dissertations

The purpose of this qualitative descriptive phenomenological study was to solicit pre-K teachers’ perceptions about professional development and its influences on instructional methodology, classroom management skills, and student outcomes. Interviews conducted with 11 teachers from childcare centers in a major urban city of Illinois provided insight into experiences of types of PL and development engagement, such as online courses, webinars, learning communities, coaching, mentoring, professional conferences, and content selection. Other experiences involved social-emotional learning, lesson planning, project-based learning, and how to teach children with special needs. The interview data collected from the participants yielded five themes using Colizzi’s data analysis …

Navigating Barriers: The Experiences Of First-Generation, Low-Income, Hispanic Male Stem Majors Enrolled In Texas Universities, Katherine L. Autry

Electronic Theses and Dissertations

This qualitative descriptive study explored barriers, strategies, and career aspirations of 10 firstgeneration, low-income Hispanic male STEM students at Texas universities. Prior research highlighted systemic inequities affecting this group’s academic success. The study addressed how these students described educational barriers, strategies to overcome them, and influences on their STEM career aspirations. Data were collected via 10 semistructured Zoom interviews, online questionnaires, and open-ended questionnaires from participants at four Texas-based universities. Reflexive thematic analysis with NVivo software identified five themes: sociocultural and economic barriers, academic and institutional challenges, resilience and coping strategies, support systems, and influence on career aspirations and identity. …

Comparing Ordinary Least Squares And Quantile Regression: A Causal-Comparative Approach To Modeling Conditional Relationships, Samuel Nnorom

Electronic Theses and Dissertations

Ordinary Least Squares (OLS) regression has traditionally been the preferred quantitative method for estimating linear relationships. However, it assumes that the effect of a predictor variable remains constant across the entire outcome distribution, which can miss important insights when data are heterogeneous. Quantile Regression (QR), on the other hand, offers a more detailed analysis by focusing on the full response variable distribution, thereby revealing different relationship patterns at various quantiles within the outcome. This study compares how OLS and QR perform in modeling conditional relationships within a causal-comparative framework based on ex post facto research. Using the mortality data from …

Characterization Of L-Band Resonators And Relaxation Times Of Soₓ- Radicals At X-Band, Georgina Naa Odey Amassah

Electronic Theses and Dissertations

Electron Paramagnetic Resonance (EPR) analysis requires resonators optimized for specific experimental challenges. Volume resonators enclose samples, while surface coil resonators allow imaging of larger subjects. For in vivo studies, L-band frequencies are commonly used because they offer a good balance between signal-to-noise ratio (S/N) and the ability to penetrate tissue. Rapid Scan (RS) EPR at L-band frequencies was chosen for my studies of resonators because of this balance but presents a challenge for sensitivity.

The spatial position dependence of signal intensity was evaluated for selected paramagnetic samples using 10 mm and 30 mm surface coils. The 10 mm coil, with …

Self Spin-Orbit Torques, Ryan Greening

Electronic Theses and Dissertations

Spin–Orbit torques (SOTs) provide an energy-efficient pathway to control magnetization in nanoscale heterostructures. Recently, spin-orbit coupling within ferromagnets has been shown to generate self spin-orbit torques (SSOTs) on the magnetization itself. Previous work on self spin-orbit torques relies on thick ferromagnets with complicated film structures with chemical disorder or compositional gradients to generate inversion symmetry breaking. This dissertation advances experimental methodology and presents data on the quantification of self spin-orbit torques in magnetic thin films due to the spin-orbit coupling of standard 3d ferromagnets.

First, I develop an oblique-incidence magneto-optical Kerr effect (MOKE) technique that exploits a mirror-assisted double reflection …

Developing Deep Learning Methods For Cognitive Impairment Detection Based On Non-Invasive Data, Muath Alsuhaibani

Electronic Theses and Dissertations

Cognitive impairment detection is on the rise to help reduce the burden of healthcare costs on institutions and individuals. Mild Cognitive Impairment (MCI) is an early stage of cognitive decline progressing to Alzheimer’s disease (AD) or AD-related Dementia (ADRD). Detecting the early stages of AD/ADRD is crucial for early interventions among older adults to mitigate cognitive decline over time. However, the current diagnostic methods are often costly and/or invasive, such as MRI and PET scans. Thus, the search for non-invasive and cost-effective screening tools for the early detection of cognitive impairment using speech, language, visual, and motor data is growing. …

Centrosomal And Non-Centrosomal Microtubule Networks Coordinate To Drive Nuclear Dynamics In Developing Epithelium, Rashmi Budhathoki

Electronic Theses and Dissertations

The morphogenesis of developing tissues relies on extensive cellular rearrangements in shape, position, and identity. A key process in reshaping tissues is cell intercalation-driven elongation, where epithelial cells align and intercalate along a common axis. Typically, analyses focus on how peripheral cortical forces influence cell shape changes. Less attention is given to how inhomogeneities in internal structures, particularly the nucleus, impact cell shaping. Here, we examine how pulsed contractile and extension dynamics interact with the nucleus in elongating Drosophila embryos. Our data show that tightly packed nuclei in apical layers hinder tissue remodeling/oscillatory behaviors. We identify two mechanisms for resolving …

Belonging: Stories From Multilingual Learners In The Linguistic Minority, Riley Stouffer

Electronic Theses and Dissertations

This qualitative case study examines how multilingual learners in the linguistic minority (MLLMs) experience connection and belonging in a Rocky Mountain middle school. Although multilingual learners (MLs) have received increased attention, MLLMs, whose home languages are not widely spoken in the school context, remain overlooked. Grounded in Krashen’s (1982) Affective Filter Hypothesis and Wills and Shinar’s (2000) Supportive Functions of Belonging, this study explores how MLLMs navigate school, what fosters or hinders belonging, and how these experiences shape engagement.

Data from semistructured interviews, classroom observations, and field notes with eight MLLM students in grades 6–8 revealed that belonging was fostered …

The Experiences Of School Psychologists Serving Students With Traumatic Brain Injuries: A Phenomenology, E. Grace Ritchie

Electronic Theses and Dissertations

Traumatic Brain Injury (TBI) is a complex experience associated with a diverse constellation of symptoms and challenges. TBI scholars have extensively explored the varying needs of youth in the aftermath of a head injury. Likewise, recent literature details recommendations for school psychological services in support of these students. Such recommendations largely reflect insights drawn from broader TBI and disability research, integrated with the established scope of school psychologists’ practice (e.g., the National Association of School Psychologists Practice Model). Nevertheless, school psychologists’ perceptions of these students’ challenges have been inadequately examined. Such perspectives are likely valuable, given school psychologists’ unique training …

Equilibration And Transport Of Binary Mixtures On Planar And Porous Nanomaterials, Andrew Torres

Electronic Theses and Dissertations

We present results of a Kinetic Monte Carlo investigation of the adsorption dynamics of binary gas mixtures on planar and porous sorbents, with a focus on identifying and characterizing kinetic processes involved in uptake evolution and how they influence equilibrium conditions. We also investigate varying thermodynamic simulation parameters such as interactions, alkane lengths, partial pressures and pore configurations to determine how they impact these kinetic processes as well as equilibrium properties. This study matters both for better understanding how kinetics and equilibrium are connected and for improving practical techniques in separation applications. For planar surfaces, weak species overshoot kinetic processes …

Role Of Nucleic Acids As Chaperones In Protein Folding, Zijue Huang

Electronic Theses and Dissertations

Many proteins have slow folding times in vitro that are physiologically untenable. To combat this challenge, ATP-dependent chaperonins are thought to possess the unique ability to catalyze protein folding. Performing quantitative model selection using protein folding and unfolding data, we here show that short nucleic acids containing Gquadruplex (G4) structure can also catalyze protein folding. Performing the experiments as a function of temperature demonstrates that the G4 reshapes the underlying driving forces of protein folding. To understand the structural basis of this catalytic activity, we introduce NMR method to solve the structures, at base-level resolution, of a multiconformer G4 with …

The Influence Of Visualization Type And Gender On Multimedia Learning Performance: An Experimental Study, Ziji Wang

Electronic Theses and Dissertations

The widespread availability of multimedia learning resources, driven by technological progress, presents both opportunities and challenges in education. While these resources, often designed with animations to aid learning, their effectiveness in learning across STEM and non-STEM fields remains controversial. Besides, researchers have increasingly turned their attention to understanding how individual learner characteristics such as gender and spatial ability influence effectiveness of multimedia learning.

This dissertation examined the impact of visualization type and gender on learning algorithms (STEM) and Chinese characters (non-STEM) after accounting for the effect of spatial ability, focusing on learning outcomes and cognitive load. The fact that males …

Under What Conditions? A University Pathway Program Evaluation, Michael Burke

Electronic Theses and Dissertations

As U.S. universities face a declining domestic applicant pool, commonly referred to as the “enrollment cliff,” international student recruitment provides a practical strategy for offsetting domestic enrollment shortfalls. One such strategy for increasing international student enrollment is through the establishment of university pathway programs that grant conditional admission to international applicants who fail to meet English language proficiency requirements but are otherwise academically admissible. As a baseline program evaluation, this study utilized a quantitative methods approach employing logistical regression analysis to determine if incoming standardized English language proficiency test scores, English as a Second Language (ESL) course GPA, and student …