Digital Commons Network^™

Presumptions Of Ai Malfunction: A Judicial Response To Ai Harms, Janine S. Hiller, Destynie J.L. Sewell

American University Law Review

In stark contrast to the recently revoked federal policy meant to incentivize the adoption of safe, secure, and trustworthy artificial intelligence systems, the July 2025 Winning the Race, America’s AI Action Plan succinctly summarizes its approach as “Build, Baby, Build!” Public discourse, as well, vacillates between artificial intelligence (AI) as a savior or an existential threat to society. To make effective decisions about AI governance, policy makers and regulators must not fail to recognize AI systems’ inherent weaknesses. Furthermore, whether citizens have recourse from harmful AI applications will also turn upon judicial balancing of competing interests between technological advancement and …

Employment And Identity, Matthew T. Bodie

Articles

Work shapes our identities, and our identities shape our work. The tension between personal identity and work identity drives popular culture, as seen in shows like Severance and The Bear, and it frames our conceptions about who we are and what gives our lives meaning. In many respects the law has assumed a clear separation between work lives and personal lives, divvying up control and responsibility over these realms on that basis. But the divide, never absolute, has blurred considerably through technological change, legal developments, and social expectations, resulting in a more pervasive employer presence in both our workspaces and …

Christian Educational Ministry, Michael Knight, Lizette Knight

Academic Books

No abstract provided.

Axial Flux Permanent Magnet Generators For Direct-Drive Wind Turbines - Review And Optimal Design Studies, Matin Vatani, Ali Mohammadi, Donovin D. Lewis, John F. Eastham, Dan M. Ionel

Electrical and Computer Engineering Graduate Research

This paper presents a comprehensive analysis of the feasibility, cost, and electromagnetic performance of five distinct types of axial flux permanent magnet (AFPM) generators designed for direct-drive wind turbines. The generator configurations investigated include a single-sided AFPM generator with a surface-mounted PM rotor (AFPMG), a double-sided AFPM generator featuring PMs on the stator and a reluctance rotor (AFPMG-RR), a coreless stator AFPM generator with surface PMs (CAFPMG-SPM), and a coreless stator AFPM generator with a Halbach PM array rotor (CAFPMG-Hal). Each generator’s operating principles and configurations are thoroughly explained and compared. Large-scale multi-objective design optimizations were conducted on each type, …

Two-Level Multi-Objective Design Optimization Including Torque Ripple Minimization For Stator Excited Synchronous And Flux Switching Machines, Ali Mohammadi, Oluwaseun A. Badewa, Yaser Chulaee, Dan M. Ionel

Electrical and Computer Engineering Graduate Research

Electric machine performance can be enhanced through torque ripple mitigation, which reduces mechanical vibrations and improves system stability and operation. This paper proposes a novel two-level optimization method for synchronous flux-switching and hybrid excitation machines, featuring an innovative multi-point spline shaping approach for torque ripple minimization. The study employs experimentally validated models based on a prototype with a similar topology. The optimization process is implemented on two distinct designs: a 20-pole inner rotor PM-excited stator machine and a 28-pole outer rotor DC-excited stator machine. Analysis results demonstrate that the proposed innovative method significantly reduces torque ripple in both configurations. Force …

Guide To The Darrel Andrews Collection, Columbia College Chicago

CBMR Collection Guides / Finding Aids

Darrel I. Andrews was a Louisiana composer and artist. He established the Carroll High School Band, serving as band director from 1949 to 1979 in Monroe Louisiana, was a member of the Southern Songwriters Guild, and worked as a resident artist in music composition with the Shreveport Regional Arts Council. The collection holds scores composed by Andrews,

Guide To The Gwendoline Y. Fortune Collection, Columbia College Chicago

CBMR Collection Guides / Finding Aids

The Gwendoline Y. Fortune Collection contains a set of 13 compact discs of classical music recordings curated by Fortune in 1997; each disc has a unique theme. The music was collected and produced for broadcast on local radio stations.

Black Love, Media Portrayals, And Social Identity, Nigel M. Taylor

Theses and Dissertations--Communication

This dissertation explores how media stereotypes about Black relationships influence Black individuals' perceptions, shaping their understanding and expectations of love. Using social identity theory as a foundation, a mixed-methods approach integrates both qualitative and quantitative methods to examine the impact of media portrayals on self-concept and relationship expectations. The quantitative findings investigate connections between media exposure, self-esteem, and partner preferences, revealing how media shapes ideas about ideal relationships and internalized racial dynamics. The qualitative analysis identifies seven themes that define Black Love and seven themes that depict media stereotypes of Black relationships. The study shows that while media often reinforce …

Addressing The "Hidden Crisis" In Doctoral Education: Identifying The (De)Motivating Effects Of Memorable Messages From A Self-Determination Theory Perspective, Alexis A. Murphy

Theses and Dissertations--Communication

Although PhD students are academically capable, they paradoxically produce alarmingly high attrition rates. For several years, retention rates in PhD programs have averaged between 40% and 70% (Ames et al., 2018; Bowen & Rudenstine, 1992; Cochran et al., 2014; Gardner & GoPaul, 2012; Lovitts, 2001; Rockinson-Szapkiw & Spaulding, 2012). Scholars have presented several potential reasons that PhD students discontinue their studies, none of which include academic ability (Lovitts, 2001; Tucker, 1964; Sverdlick et al., 2018). Framed by self-determination theory (SDT), this study explores the social and communicative components of the doctoral education system by the psychological impact of memorable messages …

Virtual Speeches, Real Fears: Public Speaking Anxiety In The Online Communication Classroom, Timothy J. Bill

Theses and Dissertations--Communication

While universities have explored online course offerings for decades, the COVID-19 pandemic accelerated this trend. The foundational communication course—a course that continues to traditionally emphasize public speaking—has felt the pandemic influence to increase opportunities for students to learn public speaking via online instruction. While scholars have learned much about the student experience of public speaking anxiety (PSA) in face-to-face settings, less is known about their experience of PSA in online courses. This dissertation explored the fears students experience when presenting online and how they view the online presentation environment.

Using Bandura’s Social Cognitive Theory as a guide, this dissertation employed …

The Information Practices Of Undergraduates Encountering Material Objects As Information Resources In Classroom Learning Tasks, Christopher A. Miller

Theses and Dissertations--Communication

Undergraduate students sometimes encounter material objects as information resources in small-group classroom learning activities. Examples include art, artifacts, specimens, and anatomical models. This dissertation sought to identify common features of the students’ information practices in such situations, regardless of the activity’s discipline or content, and to explore how making material information central shapes students’ information practices. The conceptual framework combined theorizations of materiality and information practices. Methods involved video recording students doing a variety of simulated classroom activities with objects, video elicitation, qualitative content analysis, and praxiographic interpretation. The praxiographic interpretive descriptions illustrated how all aspects of the site–material, bodily, …

Spaced Learning Approaches To Attitude Change: Impressions Of Individuals, Outgroup Prejudice, And Policy Endorsement, Emily Grace Ritchie

Yale Graduate School of Arts and Sciences Dissertations

How does the schedule of information delivery influence attitude change? While decades of research highlights the cognitive benefits of spaced learning for memory, little is known about whether these same principles extend to the domain of persuasion— particularly for socially meaningful or politically charged attitudes. This dissertation bridges cognitive and social psychological approaches by investigating whether spacing persuasive content over time enhances its ability to revise attitudes. Across three empirical chapters, I test the effects of spaced versus massed presentation of new information on evaluative judgements in three distinct domains: person impressions, social group attitudes, and policy support. In Chapter …

Guide To The David N. Baker Collection, Columbia College Chicago

CBMR Collection Guides / Finding Aids

The David Baker Collection contains twelve jazz scores he donated which date from 1970 to 1993. It also included the published works he authored from 1974 to 1980.

Guide To The William T. Dargan Collection, Columbia College Chicago

CBMR Collection Guides / Finding Aids

William Thomas Dargan is a published ethnomusicologist and an elder in the United Methodist Church, retired from teaching Music at Fisk University and St. Augustine’s College. Dargan grew up listening to Dr. Isaac Watts' hymn singing as well as rhythm and blues. His collection holds audio musical examples that accompany the written text in his book, Lining Out The Word, and field recordings of spirituals and hymns discussed in his work. The term “lining out” is a form of a cappella hymn-singing where a leader sings or chants each line of a hymn before the congregation sings it together.

Editorial: Combination Therapies In Cancer Treatment: Enhancing Efficacy And Reducing Resistance., Xinyu Wang, Milica Pešić, Ana Podolski-Renić

PCOM Scholarly Works

No abstract available

Light Enhanced Electrochemical And Photochemical Co2 Reduction, Bo Shang

Yale Graduate School of Arts and Sciences Dissertations

The anthropogenic increase in atmospheric CO2 levels has driven a global push toward sustainable energy solutions that mitigate climate change while enabling carbon-neutral fuel production. The photocatalytic and photoelectrochemical reduction of CO2 into value-added fuels such as carbon monoxide (CO) and methanol offers a promising approach to harness solar energy for clean fuel generation. However, achieving efficient, selective, and stable CO2 reduction on a semiconductor surface remains a formidable challenge due to sluggish reaction kinetics, poor charge separation, and competing hydrogen evolution reactions. Recent advancements in molecular catalysts and semiconductor-integrated systems have demonstrated remarkable progress in overcoming these limitations, paving …

I Roll To Attack The King: An Examination Of Far-Right Dissent And Ttrpgs In The Contemporary Age, Jenna C. Johnston

Undergraduate Honors Theses

Far-right ideologies have become more prevalent, both in the political sphere as well as fictional and fantasy spaces. This project analyzes the rise of far-right ideology within tabletop role-playing games (TTRPGs) and offers potential reasons as to why this shift is occurring. Through the analysis of three Dungeons and Dragons (DnD) campaigns from TTRPG show Dimension 20, combined with psychological and sociological research, this work highlights the importance of actions within TTRPGs and their impact on our actual reality. Many may act within the confines of fantastical worlds such as TTRPGs in a way that aligns with far-right ideology because …

Enhancing Engagement In Cardiovascular Risk-Reducing Behaviors Through Motivational Text Messaging (Mtm) In An Underserved Population Of Memphis, Tennessee, Lindsey H. Dao

DNP Projects

Enhancing Engagement in Cardiovascular Risk-Reducing Behaviors Through Motivational Text Messaging (MTM) in an Underserved Population of Memphis, Tennessee

Exploring Comparative Media Analysis And Its Application To Ghana, Eric Asiedu

Graduate Research Theses & Dissertations

This paper analyzes how Ghana’s media system (newspapers, radio, TV, and online news)works and compares it to Hallin and Mancini’s 2004 influential model, “Comparing Media Systems”. Their study mainly focused on Western countries like the United States and Europe. This paper tests its applicability to Ghana, located in West Africa. The paper examines four main areas of Ghana’s media: how media industries are set up and run, journalistic professionalism, how closely media outlets are connected to political parties, and how much the government controls or influences the media. The research found that Ghana’s media system has unique characteristics that differs …

International Students' Information-Seeking Experiences With A Library Discovery Tool, Kristen Jacobson

Graduate Research Theses & Dissertations

The purpose of this parallel convergent mixed methods study was to assess how international students from non-native English-speaking backgrounds that represent significant subgroups of the U.S. international student population interact with an academic library website with a discovery tool, and the usability of the tool for these students. It explored the information-seeking behavior of a group of international students (n=14) from Asia, Saudi Arabia, and Africa, who were enrolled at a Midwestern National University. It provides usability information about the issues those students encountered and their experiences when completing 10 common academic research tasks using the university library’s discovery tool. …

The Impact Of Teaching Students Stress And Trauma Alleviation Techniques For Coping With Distressing Materials In First-Year Composition, Faye Monique Scott

Graduate Research Theses & Dissertations

Trauma can impact the way a student learns and focuses. In higher education, without instructors realizing it, classes may retraumatize or trigger students with the texts, media, or materials utilized. Research suggests that little attention is given to helping students deal with potentially traumatizing course materials and students inside the classrooms may be impacted by trauma whether the teacher is aware or not. This dissertation examined the effects of teaching students specific coping strategies—Trigger Warnings (TWs) and Stress and Trauma Alleviation Techniques (STATs) —while reading, writing, and reflecting on possibly distressing materials in First-Year Composition courses through a mixed methods …

Knörr Lattices For Elementary Abelian Groups Over Unramified Extensions Of Z_P, Marie Swartz

Graduate Research Theses & Dissertations

In this dissertation, we examine the existence of positive height Knörr RD-lattices for D an elementary abelian p-group and R an unramified extension of the p-adics Zp. Knörr lattices form an important subclass of the absolutely indecomposable lattices and have close connections to modular representation theory’s “local to global” behavior. We generalize many prior results, shown only when p = 2, to odd p when |D| = p3. Further, when p = 3, we show that a positive height Knörr RD lattice must have a projective summand when restricted to any maximal subgroup of D. The proof of this requires …

Applications Of Bayesian Functional Data Analysis, Zhexuan Yang

Graduate Research Theses & Dissertations

Functional Data Analysis (FDA) is a statistical approach used to analyze data that vary across a domain, such as curves or functions. This dissertation investigates Bayesian Functional Data Analysis (BFDA) through three applications. First, we explore the use of BFDA in outcome-dependent follow-up (ODFL) studies. After conducting simulation studies, we apply our model to cardiotoxicity and kidney function data. Second, we extend BFDA to genetic data by modeling DNA methylation levels with a three-parameter skew-normal distribution and an alpha-skew generalized normal distribution. This study also introduces a novel Multistage Markov Chain Monte Carlo (MMCMC) method with the goal of identifying …

The Fiction Of Possibility: How Possible Worlds Theory Explains The Impossible Worlds Of Science Fiction, Jacob Burlingame

Graduate Research Theses & Dissertations

This dissertation explores the ways that science fiction texts convey to the reader the worlds in which they are set. It identifies four main strategies through which a science fiction text conveys its world: Neologisms, Secondary Texts, Actual-World Analogs, and Exposition. Neologisms include any words that are coined by the author to describe an entity that only exists in the text world, which creates a fuller world by creating a referent for them. Secondary Texts are any other documents alluded to by the primary text, whether created for the text world or imported from the actual world; these secondary texts …

Covariance Matrix Forecasting Of Equity Portfolios, Michael Nebor

Graduate Research Theses & Dissertations

This dissertation consists of two papers. The first paper introduces DCC-SVR, a hybrid Dynamic Conditional Correlation (DCC) and Support Vector Regression (SVR) method of forecasting the covariance matrix. This paper shows that DCC-SVR is able to outperform the traditional methods of DCC and rolling historical on multiple data sets. Performance is shown for both standard GARCH and GJR-GARCH methods. This paper also analyzes performance when dimensions are increased to 49 dimensions and when an application using equal weighted portfolio allocation is used.

The second paper introduces a covariance matrix forecasting method based on copula-GARCH simulated returns. The accuracy of this …

Examining The Associations Between Parental Academic Socialization, Social Support, Academic Enablers, And Academic Outcomes In Early Adolescence, Yoonsun Pyun

Graduate Research Theses & Dissertations

Students’ experiences of success in schools have a lasting impact on their lives. Existing literature documents parental engagement with their children’s learning is one of the key predictors that help facilitate students’ academic success. The positive association between parental engagement and favorable academic outcomes are well-established; however, studies have highlighted different types of parental engagement (e.g., home-based involvement, school-based involvement, home-school communication, academic socialization) are differentially associated with academic achievement. Further, the role of academic enabling behaviors such as interpersonal skills, motivation, engagement, and study skills in the mechanism of the association between parental engagement and academic performance remains underexplored. …

An Analysis Of Mental Health And Workplace Absenteeism, Kristin Marie Vrona

Graduate Research Theses & Dissertations

This dissertation examines the effect of mental health on own health-related absenteeism among employed adults in the United States, using data from the 2010–2014 Medical Expenditure Panel Survey (MEPS). The MEPS uniquely differentiates between absences due to one’s own health and those due to another person’s health, enabling causal estimation of individual-level factors influencing absence decisions.

The analysis incorporates both mental and physical health measures, including diagnostic indicators and self-reported general well being, which are used as proxies for severity that may affect both diagnosed and undiagnosed individuals. Results reveal a consistent pattern: individuals experiencing high psychological distress but lacking …

Water Quality And Microplastic Contamination In An Urbanizing City Nakhon Pathom, Thailand, Boonyarak Chuanchit

Graduate Research Theses & Dissertations

Microplastics (MPs) are synthetic polymer particles less than 5 mm in size that originate from both primary manufacturing and the breakdown of larger plastics. Extensive studies have examined their occurrence in other environments, while little is known about their presence and behavior in groundwater, especially in urbanizing regions in Southeast Asia. This study investigates the occurrence and abundance of microplastics within groundwater systems of Nakhon Pathom, an urbanizing province in central Thailand.

Groundwater was collected representing shallow and deep aquifers between May 2023 and May 2025. The analyses included physical-chemical parameters, major ions, heavy metals, and microplastic abundance and composition. …

Geometric Function Theory On Uniformly Quasiconformally Homogeneous Domains, Allyson Mackenzie Hahn

Graduate Research Theses & Dissertations

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Uniformly quasiconformally homogeneous domains in $\mathbb{R}^n$ carry a transitive collection of $K$-quasiconformal maps for a fixed $K\geq 1.$ In this dissertation we investigate three questions in this setting. The first is to show that quasiconformality and quasisymmetry with respect to the quasihyperbolic metric are equivalent. The second is to study normal quasiregular maps from such a domain into $S^n$ or $\mathbb{R}^n$ and determine they hold geometric properties such as a uniform Hölder condition. The third is to study preimages of a power-type mapping and show they are well-distributed in a precise sense.

An Exploration Of Social Isolation’S Effects On The Gastrointestinal And Metabolic Health Of A Social Mammal, Daniel Adam Nuccio

Graduate Research Theses & Dissertations

Human health can be impacted considerably by subjective feelings of loneliness, resulting in mental illness and the dysregulation of normal cardiovascular, immune and endocrine functioning. This occurs because social isolation serves as a form of chronic stress for social mammals, spurring physiological responses akin to those associated with more standard forms of stress. On account of their highly social nature, prairie voles (Microtus ochrogaster) subsequently have become one of the model organisms of choice for investigating the effects of social isolation on the development of disease in social mammals.

This dissertation seeks to expand the scientific community’s understanding of the …