Digital Commons Network^™

Isolation, Identification And Antibiotic-Resistance Profiling Of Bacteria Isolated From Mobile Phone Surfaces In Karbala., Kawkab Abdullah Alsaadi, Zahraa Raheem Murshidy, Dhuha Ali Hussein, Sura Abd Ali Kadhim, Kawakib Aboudi Hanoon

Karbala International Journal of Modern Science

Due to the diverse environments that mobile phones are exposed to via human handling they become reservoirs of microorganisms. The objective of the current study was to determine the level and character of bacterial contamination on mobile phones by identifying bacterial strains, and the degree of antimicrobial susceptibility. A cross-sectional study was conducted from April to July 2025 where phones belonging to 115 individuals were randomly chosen from various departments and units at Kerbala University and swabbed. The VITEK 2 automated system was used to identify bacterial taxa and test for antimicrobial susceptibility, and 50 of the swabs exhibited bacterial …

Throw Away The Script: Improvise Or Become Irrelevant, Matt Dyet

Imaginings: creative practice and inquiry

Drawing on a decade of experience as a games producer, Matt Dyet explores why the games industry’s fear of failure has led it to prioritise rigid scripts over the vital, messy joy of improvisation. Much like a comedian who suffers on stage by ignoring the room to read from a joke book, game developers often cling to "safe" plans long after the audience has moved on. By contrasting the rapid demise of Concord (a videogame built on a half-decade-old playbook) with the success of Borderlands (a videogame saved by a daring, last-minute artistic pivot) Matt argues that strategic plans are …

Foundations Of Art: Materials, Methods, And Meaning, Elizabeth Mellott

Art OERs

This course provides an introduction to the tools, materials, and processes used across a wide range of artistic media. The focus is on understanding how different materials shape the way art is created and experienced. Attention is given not only to what artists make, but also to why particular media are chosen to communicate specific ideas, emotions, or perspectives. The physical qualities of materials, the methods used, and the cultural meanings attached to them all influence artistic decision-making.

The course surveys several major categories of artistic media. Pigment-based practices include painting, drawing, and printmaking, where color and mark-making form the …

Unique Transmissions Of Cycle Graphs With Pendant Paths, Alek Li

Theses

We consider a variant of the well-known Traveling Salesman Problem where the salesman must return to the starting point after each delivery. Ramanathan et al. asked whether different starting locations in a network yield the same total travel distance. The transmission of a vertex $u$ is defined to be $T(u)=\sum\limits_{v\in V(G)}d(u,v)$ where $d(u,v)$ is the number of edges in a shortest path between $u$ and $v$.  For specialized families of graphs, we investigate necessary and sufficient conditions for a graph to have distinct transmissions.  Graph asymmetry is a necessary condition for unique transmissions. However, it is not sufficient, as asymmetric …

An Infinite Set Of One-Range Addition Theorems Without An Infinite Second Series, For Slater Orbitals And Their Derivatives, Applicable To Multiple Coordinate Systems, Jack C. Straton

Physics Faculty Publications and Presentations

Addition theorems have been indispensable tools for the reduction of quantum transition amplitudes. They are normally utilized at the start of the process to move the angular dependence within plane waves, Coulomb potentials, and the like, into a sum over spherical harmonics that allows the angular integration to be carried out. These have historically been “two-range” addition theorems, characterized by the two-fold notation r>=Max[r1,r2] and r< =Min[r1,r2] and comprising a single infinite series. More recently, “one-range” addition theorems have been created that have no such piecewise notation, but at the cost of the introduction of another infinite series. We use a very different approach to derive an infinite set of addition theorems for Slater orbitals, hydrogenic and Hylleraas wave functions, and so on, that retain the one-range variable dependence but have, at worst, a finite second series rather than an infinite one. In addition, unlike previous addition theorems, they are applicable to more than one coordinate system. One of these addition theorems may also be used for Yukawa-like functions that may appear late in the reduction of amplitude integrals, and we show its utility for an integral that has stubbornly defied reduction to analytic form for nearly sixty years. Finally, we craft indefinite integrals of 15 half-integer Macdonald functions multiplied by (inverse) powers and negative exponentials containing squares of the integration variable.

Open Multi-Agent Systems: The Free-Range-Zoo Framework And Moasei Competition, Ceferino J. Patino Iv

School of Computing: Dissertations, Theses, and Student Research

The field of multi-agent reinforcement learning (MARL) has made significant strides in addressing sequential decision-making problems under uncertainty. However, traditional MARL frameworks assume closed-world settings with fixed agent sets, static task distributions, and unchanging environment dynamics. This thesis presents two complementary contributions that advance the state of open-world multi-agent systems research: (1) the free-range-zoo framework, an open-source environment suite for MARL in open environments featuring dynamic agent populations, evolving task sets, and changing operational frames; and (2) the MOASEI Competition, an international benchmarking event that leverages free-range-zoo to evaluate how artificial agents handle openness in complex, partially observable domains. The …

Secondary Mathematics Teachers' Perceptions, Knowledge, And Collaborative Practices In Professional Learning Communities, Josey S. Rodriguez

Education Theses and Dissertations

This Improvement Science Dissertation in Practice (ISDiP) investigates teacher perceptions, knowledge of and collaborative practices of professional learning communities (PLCs) at a Southwest Texas high school. The study used a mixed-methods design utilizing a survey, open-ended questionnaire, PLC observations, and an interview. Participants included 8 mathematics teachers and one campus administrator at a campus with over 800 students in grades nine through twelve. Teacher perceptions of PLCs were analyzed using descriptive statistics for quantitative data, while observations, the open-ended questionnaire, and the interview were analyzed using inductive thematic analysis (Braun & Clarke, 2006). Findings revealed that despite PLC+ training, limited …

Dynamic Individualized Latent Trait (Dilt) Model: Bridging Nomothetic And Idiographic Psychometrics, Muchen Xi

Arts & Sciences Graduate Student Theses and Dissertations

This dissertation aims to develop an analytical framework that bridges the long-standing divide between nomothetic and idiographic approaches to defining the structure of personality and other individual differences. The nomothetic tradition seeks to explain and predict behavior through stable, universal dimensions of personality, while the idiographic approach emphasizes the fine-grained, dynamic processes unique to individuals. Although theoretical advances have begun to reconcile these perspectives, analytical methods capable of integrating them remain underdeveloped. To address this gap, I introduce the Dynamic Individualized Latent Trait (DILT) model, a framework that decomposes ordinal item responses from intensive longitudinal data into three components: 1) …

Advancing High-Energy Astrophysics Through X-Ray Spectropolarimetry And Balloon-Borne Instrumentation, Sohee Chun

Arts & Sciences Graduate Student Theses and Dissertations

The strong gravitational field around black holes provides a unique laboratory for investigating the behavior of matter and radiation under extreme conditions. As matter accretes, the interplay between the accretion disk, hot corona, and surrounding stellar environment produces complex spectral and polarimetric X-ray signatures. Thus, X-ray spectropolarimetry has become a powerful tool for constraining the accretion geometry. Building on these advances, this dissertation integrates theoretical modeling, observational data analysis, and instrumentation development to address open questions in high-energy astrophysics. On the theoretical side, relativistic ray-tracing simulations test the truncated disk-hot inner flow accretion geometry against observations of Cygnus X-1, identifying …

The Intersection Of Visual Communications, User Experience, & Design Theory: A Case Study With The Dog Spaw, Jessica Miltner

Honors Projects

This project explored the intersection of visual communication, user experience, and design theory, focusing on researching design and UX principles and applying them in a real-world case study with The Dog Spaw from Celina, Ohio. The project resulted in a redesigned website that aims to influence user behavior by improving perceptions of trust, professionalism, brand consistency, and ease of use, and by examining how these perceptions, in turn, influence user action.

Echoes Of Memories Erased: A Reflection On Underscoring Between The Fractures, Nat Texler

Imaginings: creative practice and inquiry

This paper covers a reflective account of creating the underscore for the 2025 production of Between the Fractures, performed at the Butterfly Club in Melbourne, Australia. While the process of creating a mise-en-scéne  for a two hander within a small theatre space involves multilayered praxis of aesthetic inferences (Pavis, 2003) this paper aims to provide an insider’s account into some of the creative processes that resulted in the original underscore. Drawing on an eclectic fusion of practice as research methodology, specifically Linda Candy’s reflection practice variants (Candy, 2021), the research provides insight into the decisions, references (musical and otherwise), …

Applied Data Science Insights Into Grade Eight Math, Physics, And Ap® Physics Exam-Taking Influencing Act Stem Outcomes, Reema Banerjee

Dissertations (1934 -)

This study examined the longitudinal relationships among eighth grade mathematics proficiency, high school physics availability, AP® Physics exam participation, and ACT STEM scores across Wisconsin public school districts. A retrospective, multi-cohort design was used, and two cohorts were tracked from middle school through junior year. Publicly available datasets were analyzed using an applied data science approach in R, incorporating exploratory visualization, univariate and bivariate analyses, and multivariate regression modeling. Results indicated a positive association between eighth-grade mathematics proficiency and ACT STEM outcomes. AP® Physics exam participation emerged as a statistically significant independent predictor of ACT STEM scores after controlling for …

History Of Florence State Teachers College, Susan Kirkman Vaughn

Documents

The story of the History of State Teachers College in Florence, Alabama.

Making The Case For Spandex: The Nature Of Re-Novicing And The Merging Of Expertise For Former Elementary And High School Teachers Who Move To Teaching At The Middle Level, Elizabeth K. Boyle

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

As an academic coach in a large, Midwestern middle school, I noticed an influx of teachers with years of prior experience at the elementary or high school levels being hired to work with students in grades six through eight. Because they were already veteran teachers, they were not assigned mentorship, yet there were aspects of working in a middle-school setting that effectively “re-noviced” them (Hanuscin et al., 2020).

Knowing that cookie-cutter approaches to professional development and learning often do not meet the needs of adult learners, I sought information that would guide what professional growth opportunities could be provided to …

Developing A Framework To Improve Phishing Response After Detection, Kevin Umba

Master's Theses (2009 -)

Phishing belongs to the most prevalent attack vectors in the cybersecurity industry. Academia, industry, and government resources offer a wealth of information on the subject. However, insights on phishing techniques and remediations are scattered across those sources. Most governmental and academic literature focuses on user awareness, policy guidelines, or phishing training. This leaves the security practitioners underserved. Furthermore, actionable information for security operations is often unstructured or vendor-specific. The goal of the thesis is to provide a preliminary framework to guide security professionals through indicators of compromise and remediation, using a vendor-neutral approach.

The Low-Temperature Heat Capacity And Thermodynamic Functions Of Mg3n2, Ca3n2, And Sr3n2, Natalie Parkinson

Undergraduate Honors Theses

Alkaline earth nitrides are highly hygroscopic materials used in metal refinement and various synthetic processes. In this work, the low-temperature heat capacities of Mg₃N₂, Ca₃N₂, and Sr₃N₂ were measured for the first time. The Ca₃N₂ sample contained impurities, necessitating corrections to the heat capacity data. The absolute entropies of Mg₃N₂, Ca₃N₂, and Sr₃N₂ at 298.15 K were determined to be 75.1, 114.9, and 188.5 J∙K⁻¹∙mol⁻¹, respectively. Gibbs energies of formation were …

Writing As A Process Of Inquiry In Autoethnography For Meaning-Making: Reflections And Some Points For Consideration, Niroj Dahal

The Qualitative Report

This article explores writing as a process of inquiry and meaning-making in the autoethnographic tradition, offering reflections on the recursive, emergent, and dialogical/dialectical nature of writing, along with some points for consideration. Drawing on perspectives from qualitative research and narrative inquiry (Riessman, 2008), I argue that autoethnographic writing serves as a method of inquiry and/or discovery, generating ontological, epistemological, and axiological-driven cultural meaning that functions as a site of reflection, interrogation, and re-storying of lived experiences. This recursive, often messy, and reflexive act allows researchers to excavate, analyze, and interpret their lived experiences. Rather than viewing writing as a final-stage …

Fast Hyperspectral And Super-Resolved Mapping Of Lipid Membrane Polarity With Single-Molecule Sensitivity, Elric Dion Pott, Meek Yang, James Ethan Batey, Jole Embree, Bin Dong

Chemistry & Biochemistry Faculty Publications and Presentations

Cell membranes display nanoscale heterogeneity in lipid composition and organization that regulates vital biological processes yet remain challenging to resolve with conventional imaging. We introduce spectral phasor single-molecule localization microscopy (SP-SMLM), a hyperspectral and super-resolution method that combines wavefront-like optical filtering with single-molecule imaging for simultaneous spatial and spectral analysis. A lab-built three-channel imager with sine/cosine filters encodes emission spectra of single molecules into the phasor space, enabling high-throughput, high-SNR mapping of membrane polarity at sub-50 nm spatial and 15 s temporal resolutions. Through simulation, we validate that the phasor angle correlates with the spectral mean for single dye molecules. …

Initiatives To Grow New Innovative Talent To Enable Fusion Energy, Peng Zhang, Ranganathan Parthasarathy, Yuqiao Fan, Arnold Lumsdaine, Rinkle Juneja, Yuchen Jiang, Monica Gehrig, Louise Ferris, David Donovan, Firas Akasheh, Olakunle Harrison, Joshua Schlegel, Manish Sharma, Mohammad Habibi, Mohan Rao, Rajni Chahal, Sean Walters, Vola Andrianarijaona

Achieve

The Initiatives to Grow New Innovate Talent to Enable Fusion Energy (IGNITE Fusion Energy) project was launched under the U.S. Department of Energy’s Reaching a New Energy Sciences Workforce (RENEW) program. This DOE RENEW-funded project is a multi‑institutional program that aims to build the future fusion workforce through mentoring, curriculum development, and innovation bootcamps. IGNITE brings together six academic institutions (Tennessee Tech University, Tennessee State University, Tuskegee University, Southern Adventist University, Missouri University of Science Technology, and University of Tennessee–Knoxville), Oak Ridge National Laboratory (ORNL) as a research and partnership hub, and 11+ private fusion companies for industry input and …

Power Fuzzy Clustering: Flexible Distance Metrics And Inclusion Of Covariates, Phuc T. Nguyen, Cristina Tortora, Antonio Punzo

Faculty Research, Scholarly, and Creative Activity

Clustering is a fundamental task in statistics and machine learning aimed at identifying homogeneous groups within data. Among the available approaches, fuzzy clustering (FC) is particularly suited to poorly separated boundaries, as it allows partial memberships and captures uncertainty and overlapping structures. We introduce power fuzzy clustering (PFC), a general framework that unifies several FC methods, including fuzzy K-means and probabilistic distance clustering. By complementing the classical fuzzifier with a power parameter on distances, PFC enhances model flexibility while retaining interpretability. To accommodate clusters with different shapes and scales, we incorporate a volume parameter and alternative distance metrics (e.g., Mahalanobis …

Beyond Victimhood, Expanding Narratives: A Generative Inquiry With Trafficking Survivors, Giacomo Chiara, Celiane Camargo-Borges, Diego Romaioli, Alberta Contarello

The Qualitative Report

This study is a generative inquiry with survivors of trafficking from a social constructionist perspective. Inspired by the principles of Appreciative Inquiry, its focus is collaboration between researchers and trafficking survivors with a view to shaping and understanding their trafficking experiences together, expanding understanding of the topic and co-constructing a relational space in which counter-narratives on victimhood can be generated. It consisted of 10 interviews with women survivors of trafficking at the Italian Anti-Trafficking System. These women were from a range of nations and their experiences of exploitation varied. Taking a constructionist approach to research, we formulated an episodic-generative interview …

3Ω Thermal Transport In Atomically Thin Materials, Yiwei Le

Arts & Sciences Graduate Student Theses and Dissertations

Since the discovery of graphene, research on two-dimensional (2D) materials has become a central focus of condensed matter physics. While an enormous number and variety of investigations of their electrical, optical, and mechanical properties have been undertaken, their thermal properties remain comparatively underexplored, despite the importance for understanding low-energy excitations and phase transitions. Here, we introduce an extension of the 3ω method thermal measurement technique to the 2D limit of materials. We develop analytical models of thermal transport in the 3ω geometry with boundary conditions tailored for suspended 2D flakes. We then experimentally confirm the feasibility of this approach in …

Static And Dynamic Properties Of Dense Matter, Liam Brodie

Arts & Sciences Graduate Student Theses and Dissertations

Neutron stars and their mergers create environments of ultra-dense matter where the strong interaction governs the behavior, but where quantum chromodynamics, the theory of the strong interaction, cannot be solved exactly or perturbatively using current methods. Neutron stars are objects with more mass than our Sun, but with a diameter of about 25 km. Observations of neutron star macroscopic properties like their masses and radii, their surface temperatures, and the gravitational-wave and electromagnetic signals from their mergers allow us to use theoretical tools to infer the behavior of matter at a microscopic scale. In this thesis, we explore the static …

The Role Of Interactions In Moiré Quantum Materials, Liangtao Peng

Arts & Sciences Graduate Student Theses and Dissertations

Moiré quantum materials have emerged as a highly tunable platform for studying strongly interacting electrons in low dimensions. By twisting or lattice-mismatching atomically thin crystals, one can generate long-wavelength moiré superlattices that reconstruct the electronic bands, produce narrow bandwidths, and greatly enhance the importance of Coulomb interactions. As a result, these systems host a wide range of correlated phenomena, including symmetry breaking, magnetism, and superconductivity. This dissertation develops and applies Green's-function-based many-body methods to understand the role of interactions in moiré quantum materials. This dissertation consists of four chapters. The first chapter introduces moiré quantum materials and reviews the basic …

Development Of New Technical Approaches To Speed The Search For Axion Dark Matter With Haloscopes, Jonah Harper Hoffman

Arts & Sciences Graduate Student Theses and Dissertations

The axion is a hypothetical particle that may solve two major problems in physics: the strong CP problem in quantum chromodynamics (QCD) and the unknown particle nature of the dark matter. Axion haloscopes like the Axion Dark Matter eXperiment (ADMX) are capable of probing the region of parameter space where axions could constitute the dark matter. These experiments use a microwave resonant cavity in a strong magnetic field to convert axions into detectable photons when their Compton wavelength matches the resonant mode of the cavity. By moving a metal rod within the cavity volume, the resonant frequency can be tuned, …

What Multiple Theories Can Illuminate In Qualitative Research, Sherry Marx, Rachel Billings, Taylor Dexter, Mark T. Lewis, Patrick Ocran, Douglas Weber

The Qualitative Report

Our aim in this paper is to help scholars better understand theory’s purpose in qualitative research, how it is employed in data analysis, and the strengths and limitations of the insights it can reveal. We do this by sharing our practice using multiple theories to make sense of a common data set in an advanced doctoral class focused on theory in qualitative research. For the class final project, students chose different theories to analyze one common data set: A brief historical article on the Los Angeles Zoot Suit Riots. Student-chosen theories included constructivism, actor-network theory, symbolic interactionism, critical race theory, …

Extraction And Interpretation Of Eeg Features For Diagnosis And Severity Prediction Of Ad And Ftd Using Deep Learning, Tuan Vo

Electronic Theses and Dissertations 2020 - Present

Alzheimer’s disease (AD) is the most common form of dementia and is characterized by progressive cognitive decline and memory impairment. Frontotemporal dementia (FTD), the second most prevalent form, primarily affects the frontal and temporal lobes and often leads to changes in personality, behavior, and language. Due to overlapping clinical symptoms, FTD is frequently misdiagnosed as AD. Electroencephalography (EEG) offers a portable, non-invasive, and cost-effective method for studying brain activity; however, its diagnostic utility for differentiating dementia subtypes is limited by signal complexity and noise. In this dissertation, I propose an EEG-based feature extraction framework that leverages deep learning to identify …

All-Sky Search For Long-Duration Gravitational-Wave Transients In The First Part Of The Fourth Ligo-Virgo-Kagra Observing Run, A. G. Abac, I. Abouelfettouh, F. Acernese, Teviet Creighton, Mario C. Diaz, Raul A. Espinosa, J. Lawrence, Francisco Llamas Villarreal, Soma Mukherjee, Volker Quetschke, Miriam Ramos Arevalo, Wenhui Wang

Physics & Astronomy Faculty Publications

We present an all-sky search for long-duration gravitational waves (GWs) from the first part of the LIGO-Virgo-KAGRA fourth observing run (O4), called O4a and comprising data taken between May 24, 2023, and January 16, 2024. The GW signals targeted by this search are the so-called “long-duration” ( ≳1  s) transients expected from a variety of astrophysical processes, including nonaxisymmetric deformations in magnetars or eccentric binary coalescences. We make minimal assumptions on the emitted GW waveforms in terms of morphologies and durations. Overall, our search targets signals with durations of ∼1–1000  s and frequency content in the range 16–2048 Hz. In …

Evaluating Acridones As Novel Therapeutics For Human Babesiosis, Pratap Vydyam, Elizabeth Zhang, Papireddy Kancharla, Rozalia A. Dodean, Jane X. Kelly

Chemistry Faculty Publications and Presentations

Human babesiosis is an emerging tick-borne disease caused by Babesia parasites, most notably Babesia microti and Babesia duncani in North America and Babesia divergens in Europe. Infections can be severe or persistent or relapse despite treatment, and current therapeutic options remain limited, underscoring the urgent need for new and effective treatment options. Acridone derivatives originally developed as potent antimalarial agents against multiple life cycle stages of the malaria parasites were evaluated for their antibabesial activity using continuous in vitro culture systems of B. duncani and B. divergens. Lead candidates were assessed for selectivity against human cell lines to establish preliminary …

Programmable Metal−Organic Complex Arrays With Precisely Controlled Metal Sequences As Tunable Multinuclear Scaffolds, Ahmed Alzamly, Sajid Ali

Faculty Scholarship

Metal−Organic Complex Arrays (MOCAs) offer a modular framework for creating multinuclear systems with precise control over metal ion identity and sequencing at the molecular scale. This structural accuracy allows researchers to investigate how specific metal arrangements dictate cooperative phenomena, such as catalytic efficiency, electronic interactions, and photophysical responses. Recent breakthroughs in synthetic strategies  including orthogonal protection and periodic metalation have enabled the fabrication of highly predictable heterometallic structures. This Review explores the fundamental principles of MOCAs’ sequence control, contemporary fabrication techniques, and the relationship between metal placement and emergent properties. Additionally, it examines applications of MOCA in catalysis, sensing, and …