Digital Commons Network^™

Evaluating Topic Models With Openai Embeddings: A Comparative Analysis On Variable-Length Texts Using Two Datasets, Abdullah Wahbeh, Mohammad Al-Ramahi, Omar F. El-Gayar, Ahmed Elnoshokaty, Tareq Nasralah

Research & Publications

Topic modeling is a crucial unsupervised machine learning technique for identifying themes within unstructured text. This study compares traditional topic modeling methods, like Latent Dirichlet Allocation (LDA), against advanced embedding-based models, specifically BERTopic-OpenAI. The analysis utilizes two distinct datasets: user reviews from the mental health app Replika and the 20newsgroup dataset. For the Replika dataset, both methods identified common themes, but BERTopic-OpenAI uncovered additional nuanced topics, demonstrating its enhanced semantic capabilities. Quantitative evaluation of the 20newsgroup dataset further highlighted BERTopic-OpenAI's advantage through achieving higher topic coherence and diversity than the best-performing LDA model. These results suggest that embedding-based models provide …

Latent Subtypes Of Comorbidities In Multiple Sclerosis Patients: Insights From Social Media, Laxmi Manasa Gorugantu, Nevine Nawar, Omar F. El-Gayar

Research & Publications

Multiple Sclerosis is a chronic neurological disease associated with various physical and cognitive impairments. Individuals with MS might also experience medical and psychiatric comorbidities that can exacerbate the severity of the disease and lower their overall well-being. Therefore, it becomes essential to identify these co-occurring health conditions at the early stages to optimize treatment and improve patient outcomes. Consequently, the objective of this study is to explore the commonly occurring comorbidities among MS patients around the globe from social media discourse. Furthermore, it aims to unveil public perceptions, providing insights that might not be captured via clinical research methods. The …

A Systematic Literature Review On Ai Chatbots In Automating Customer Support For E-Commerce, Sai Mounika Chintalapudi, Omar F. El-Gayar, Cherie Noteboom

Research & Publications

The rapid advancement of artificial intelligence (AI) has significantly transformed the e-commerce sector, particularly through the integration of AI-powered chatbots. This study conducts a systematic literature review to examine how chatbots align with the eight foundational features of e-commerce technology: ubiquity, global reach, universal standards, interactivity, information richness, information density, personalization/customization, and social technology. Guided by the PRISMA framework, the review addresses two primary research questions: (1) How do AI-driven chatbots support the unique features of e-commerce technology? and (2) What technological advancements enhance their functionality in this context? Relevant literature was retrieved from five major academic databases: ACM Digital …

Knowledge Management Processes For Improving Supply Chain Performance - A Systematic Literature Review, Sai Neelima Seru, Omar El-Gayar

Research & Publications

This study presents a systematic review of 36 articles published between 2020 and 2025 to explore how knowledge management processes improve supply chain performance. Using the Resource-Based, Knowledge-Based, and Dynamic Capability View as theoretical lenses, the review examines KM processes - creation, storage, sharing, and application across the People-Process-Technology (PPT) dimensions. The findings show that KM enhances collaboration, agility, resilience, innovation, and sustainability by balancing human enablers, structured processes, and digital technologies. The review positions KM as a strategic capability and suggests that future research should explore KM integration with AI and blockchain to build smarter, more adaptive supply chains.

Insights Into The Optoelectronic And Thermoelectric Properties Of Lead-Free Rb2nairf6 Double Perovskite Compound: A First-Principles Study, Mwende Mbilo, Robinson Musembi, John Peter Kachira, Wisley Nyangau Onsate, Fanuel Mugwanga Keheze, Refilwe Edwin Mapasha

All Grantees Publications

This study investigated the structural, electronic, elastic, mechanical, thermodynamic, optical, and thermoelectric properties of the Rb2NaIrF6 lead-free double perovskite compound using first-principles methods. The structural stability of the perovskite was confirmed by the Goldschmidt tolerance and octahedral factors. Dynamic stability was confirmed through the negative energy of formation and positive frequency modes of the phonon dispersion curve. The dynamic stability results suggest that the studied compound could be potentially synthesised experimentally. The Rb2NaIrF6 compound is a direct semiconductor with electronic band gaps within the range of 2.14–3.76 eV, computed using different approximations. The mechanical stability was confirmed by the elastic …

Dielectric Performance Of Fused Filament Fabricated Ultem 9085 For Naval Radome Application, Carson Rogers

UNF Graduate Theses and Dissertations

ULTEM 9085 is a high-performance thermoplastic used in the fused filament fabrication (FFF) additive manufacturing process. It has found use in applications where mechanical strength, chemical integrity, and thermal stability are of paramount importance. In this thesis, the effects of process parameters, annealing, and weathering on the mechanical and dielectric properties of FFF ULTEM 9085 have been investigated.

The first part reviews existing research on how printing parameters such as nozzle temperature, chamber temperature, print speed, infill, and layer height affect the mechanical performance of FFF ULTEM 9085. Data from the manufacturer of commonly used ULTEM 9085 filament, Stratasys, has …

Ai And The Doctoral Schism: Institutional Resistance Vs. Adoption In Doctoral Education, Valerie A. Storey

All Faculty and Staff Scholarship

This paper examines the schism emerging in doctoral education regarding the integration of Generative AI (GenAI). Drawing on Rogers’ Diffusion of Innovations Theory (DIT), this analysis examines how higher education institutions are responding to the disruptive potential of AI in doctoral writing, research, and dissertation defense. A historical examination spanning from Socrates’ resistance to written texts (370 BCE) through contemporary AI debates reveals a recurring pattern: initial resistance to technological innovations, followed by gradual institutional adoption as new frameworks emerge that accommodate the technical tools while preserving the core values of graduate education. DIT-grounded analysis reveals three key factors driving …

Level Up Your Legal Knowledge: A Gamer’S Guide To Navigating Copyright Challenges For Video Game Music Covers And Sheet Music Arrangements., Lee, Aliza Jimin

Santa Clara High Technology Law Journal

Video games are a significant part of many people’s lives, offering immersive worlds, memorable experiences, and music that stays with us long after the controller has been put down. Fans and players who love video game music often express their appreciation by creating music covers, arranging sheet music, and performing video game compositions. However, the legal complexities surrounding copyright are not always top of mind for these creators. This paper explores the intersection of copyright law and fan-created video game music, focusing on covers and sheet music arrangements. It outlines how ownership of music in the video game industry is …

University Of Richmond Magazine - Summer 2025

University of Richmond Magazine

The University of Richmond's Alumni Magazine was first published as The Alumni Bulletin in 1936 and continues to this day as the University of Richmond Magazine.

University Of Richmond Magazine - Autumn 2025

University of Richmond Magazine

No abstract provided.

Rhythm Against Poethics, Jayvyn Dacas

Honors Undergraduate Theses

This thesis stages an auto-poetic ethnography that listens to, and moves with, the anterior spaces of Black life. Those murmurs, hums, musical hesitations, and infrastructural vibrations that refuse capture by dominant epistemic regimes. Drawing from Ramon Amaro’s reading of Sylvia Wynter, Katherine McKittrick and Alexander Weheliye’s reflections on sound, Fred Moten’s insights on displacement, and Tendayi Sithole’s attention to the phonographic, the project situates music production as method and unworlding. Through engagements with the 808, sampling, sound systems, and embodied listening across Florida. Spaces like the warehouse, the party, record stores, and community become the work of Black voices, and …

A Story Of Oppression A Psychological And Creative Approach, Juan R. Morillo

Honors Undergraduate Theses

The aim of this project is to survey the manner in which oppression is expressed in selected works of literature. It is a topic that not only am I familiar with through my studies of literature and psychology, but one that I, as well as every Venezuelan expatriate has witnessed and felt for their country. The project focuses on social and political oppression, using the current Venezuelan crisis as a focal point, and selected literary sources as a framework. I will analyze dystopian classics such as George Orwell's 1984 and Ray Bradbury’s Fahrenheit 451, as well as Margaret Atwood’s The …

Exploring Electroweak Baryogenesis Within Real Scalar Models: Theoretical Foundations And Collider Phenomenology, Corine M. Smith

Honors Undergraduate Theses

The matter–antimatter asymmetry and the hierarchy problem related to the Higgs boson mass remain key open questions in high energy physics. Electroweak Baryogenesis offers a solution to the asymmetry by modifying the Higgs sector to allow a strongly first-order phase transition. This work investigates two real singlet scalar extensions of the Standard Model, incorporating novel quartic and triple couplings between the new scalar fields, providing a testable framework for vacuum-induced scalar mixing effects and enhanced multi-Higgs boson production. These interactions modify the scalar self-coupling and can induce resonant enhancements in multi-Higgs boson production processes. The theoretical constraints are derived from …

Towards Understanding Thermal Management In Unsteady Boundary Layer Flow With Ac/Dc Electric Fields, Sara Abdelsalam, M. A. Dagher, Y. A. Elmaboud, A. I. Abdellateef

Basic Science Engineering

Unsteady boundary layer flow induced by alternating current (AC) or direct current (DC) electric field through a porous layer is investigated numerically. The finite difference method based on Crank-Nicolson is applied to solve the nonlinear system. The governing equations are built with fractional shear stress and the Cattaneo heat flux model, and time fractional derivatives are computed using the Caputo fractional derivative. The numerical results are presented to demonstrate the effects of varying parameters on momentum and thermal boundary layer. The results reveal that the time delay in the velocity profile occurs for larger values of both the velocity fractional …

Customer Service Operations: A Gatekeeper Framework, Maqbool Dada, Brett A. Hathaway, Evgeny Kagan

Faculty Publications

Customer service has evolved beyond in-person visits and phone calls to include live chat, AI chatbots and social media, among other contact options. Service providers typically refer to these contact modalities as “channels”. Within each channel, customer service agents are tasked with managing and resolving a stream of inbound service requests. Each request involves milestones where the agent must decide whether to keep assisting the customer or to transfer them to a more skilled – and often costlier – provider. To understand how this request resolution process should be managed, we develop a model in which each channel is represented …

New Family Law Statutes In 2024: Selected State Legislation, Family Law Quarterly 2024–25 Editors, New York Law School

Redefining Family Law: State Legislative Updates

This article provides summaries and context for 35 changes to family law that were enacted in 2024 by legislatures in 25 states and the District of Columbia. The topics include (1) Equal Protection, (2) Child Custody and Visitation, (3) Nonparent Custody and Visitation, (4) Child Welfare, (5) Domestic Violence, (6) Juvenile Justice, (7) Parentage, (8) Age of Marriage, (9) Companion Animals, (10) Education, (11) Criminal Justice, and (12) Provision of Legal Services. More specifically, the topics of the laws featured in this article include (among others) supervised visitation; increased protections for LGBTQ+ families; pet custody in divorce proceedings; and strengthened …

Business Communication And Editing Students’ Evaluations Of Written Error: An Eye-Tracking Study, Matt Baker, Grant Eck, Ana Barraza, Benjamin Duffield

Faculty Publications

Using eye-tracking and interview methods, this study investigates how business communication students and editing students attend to and evaluate writing. Participants reviewed blog posts embedded with errors and judged publication readiness. While both groups visually fixated longer on errors than non-errors, business communication students were more likely to approve error-containing texts for publication. Qualitative data revealed that business communication students prioritized content while editing students prioritized surface-level issues. These findings suggest that disciplinary background informs evaluative standards, even when error-detection behavior is similar. The results carry implications for instruction in business writing and editing, especially concerning collaborative, cross-disciplinary workplace writing.

What Works In Telehealth Play Therapy? An Appreciative Heuristic Inquiry, Veronica Ann Ball

Dissertations

With the onset of coronavirus disease 2019 (COVID-19) in the United States in March 2020 (World Health Organization, 2020), professional counselors providing traditional in-person play therapy found themselves in a quandary regarding the delivery of services during a global pandemic (Evans, 2022; Mitchell, 2020; Whaibeh et al., 2020). Online counseling proffered a means to prevent the disruption of services, respond to the need for emerging counseling services, and comply with social restrictions (Evans, 2022). Prior to the pandemic, telehealth play therapy was used sparingly (Haslam & Harris, 2011; Smith et al., 2021), and many child-serving mental health professionals lacked training …

What About The Children? An Exploration Of Family Counselors' Play Therapy Training And Preparedness To Integrate Children Into Family Counseling, Patricia J. Walker Monical

Dissertations

Children are an important part of families, yet family counselor education programs often do not incorporate training for including children in family counseling. At some point in their careers, family counselors and therapists will encounter clients who have children 3–12 years old. The problem is that since these professionals often receive little to no training in play therapy and thus do not typically include young children in family therapy, these younger family members are often overlooked. Research has confirmed that, due to a lack of sufficient training and supervision in play therapy, many family therapists report feeling unprepared to work …

Enhanced Photocatalytic Reduction Of Cr(Vi) Under Visible Light A Magnetically Separable Tio2-Fe/Fe3o4 Photocatalyst Prepared From Iron Rusty Waste, Khoirunisa Khoirunisa, Novianti Dwi Lestari, Endang Tri Wahyuni, Taufik Abdillah Natsir

Journal of Metals, Materials and Minerals

This research deals with enhancing the visible activity and generating the magnetic property of TiO2 by Fe doping and Fe3O4 impregnation respectively, using rusty iron waste as Fe source. The prepared TiO2-Fe/Fe3O4 photocatalysts were characterized by SR-UV/Visible, FTIR, XRD, and SEM-EDX instruments. The resulting photocatalysts are responsive to visible light and can be separated magnetically and used for photoreduction of Cr (VI) ions. In the photoreduction of Cr(VI) over TiO2-Fe/Fe3O4 photo-catalysts with various amounts of Fe dopant and alteration of Fe3O4 fraction, the photocatalyst mass, irradiation time, and solution pH were optimized. The research results assign that doping Fe to …

Impacts Of Calcination Temperature On The Crystallography, Granulometry And Impedance Of Licomno4, Chee Wayne Tan, Zul Hilmi Che Daud, Zainab Asus, Mohd Hasbullah Idris, Izhari Izmi Mazali, Mohd Kameil Abdul Hamid

Journal of Metals, Materials and Minerals

Spinel structured lithium cobalt manganese oxide (LiCoMnO4) which exhibit reduction potential surpassing 5.0 V (vs. Li0 | Li+) was identified to be one of the prospective cathode candidates for next generation lithium-ion electrochemical systems. This article highlights the significance of calcination temperature on the crystallography of the resultant electroceramic compound as well as the corresponding response on the granulometry and impedance of LiCoMnO4. LiCoMnO4 compounds synthesised via sol-gel reaction in the first instance were converted into xerogel and subsequently subjected to facile one-step calcination protocol. Crystallography of the post-calcinated compounds were characterised via powder x-ray diffraction (XRD) technique. Temperature ranging …

Aluminium Oxide Particles-Containing Organogels For Cleaning Of Optical Glass Surfaces, Galina Vladimirovna Lyamina, Oksana Valerievna Dubinina, Alfa Edison I Lela

Journal of Metals, Materials and Minerals

Hypothesis:  Some types of cleaning methods are not very effective and can actually increase damage to the optical parts being cleaned. As an alternative to these methods, we propose the use of gel-like substances to remove contaminants from optical surfaces. We have developed a method for cleaning optical glass surfaces that uses organogels, which are based on copolymers of methyl methacrylate and methacrylic acid. These organogels are loaded with polyethylene glycol, and aluminum oxide particles (Al2O3), which help to effectively remove contaminants without causing damage to the surface.   Experiments:  Al2O3 nanoparticles prepared by a Nano Spray Dryer were added to …

Aku Libraries Annual Report - 2025, Office Of The University Librarian

Office of the University Librarian Reports

- Message by Peter Gatiti Associate Vice Provost & University Librarian

- The Beautiful Nakawa Campus Library

- AKU Author’s Day 2025

- Celebrating 5 Years of AKU Author’s Day: Bold Voices, Powerful Stories, Lasting Impact.

- A Student’s Journey into Co-Authoring Neuroscience

- My Fear of Academic Writing

- University Library Strategic Plan 2024-2029

- Lecture Series on Open Science

- Behind the Scenes

- Our Libraries & Students

- Book Conversations…

- RFID Technology at AKU Libraries

- Video Editing: Where Vision Meets Creativity

- Preserving Today for Tomorrow

- “Our Collections Matter”

- The FMIC Library

- …

Gender-Responsive Reporting And Communication Curriculum, Graduate School Of Media And Communications

The Aga Khan University Prospectuses and Brochures

This curriculum, developed in collaboration with media organisations, women’s professional associations, and civil society groups in East Africa, provides a structured approach to teaching gender-responsive reporting and communication. Covering concepts such as gender analysis, gender-based violence, media representation, and emerging issues including climate change and artificial intelligence, it aims to strengthen journalism education and practice by fostering inclusivity, equality, and balanced reporting

Faculty Of Arts And Sciences Prospectus 2026, Faculty Of Arts And Sciences

The Aga Khan University Prospectuses and Brochures

• Message from the Pro Chancellor
• Message from the President
• Message from the Dean
• About AKU
• About the Faculty of Arts and Sciences
• About the Programme
• Core Curriculum
• Interdisciplinary Majors
• Experiential Learning
• Senior Capstone
• Message from the Director of Undergraduate Studies
• Explore Our Majors
• Asian and Middle Eastern Studies – Career Pathways
• Environmental Studies – Career Pathways
• Philosophy, Politics, and Economics – Career Pathways
• Social Development Studies – Career Pathways
• Courses at a Glance
• Message from the Associate Dean – Research
• The Design Laboratory (D-Lab)
• FAS Library
• Hallmarks of FAS Graduates
• Student Testimonial
• Student Testimonial
• Applying to the FAS
• Fees and …

The Aga Khan University Prospectus 2025, The Aga Khan University

The Aga Khan University Prospectuses and Brochures

• Message from the President
• Message from the Provost & Vice President, Academic
• About AKU
• Our Mission, Vision & Values
• Why AKU?

• Programmes of Study

  Undergraduate Programmes

• School of Nursing and Midwifery, East Africa
• School of Nursing and Midwifery, Pakistan
• Medical College, East Africa
• Medical College, Pakistan
• Faculty of Arts and Sciences, Pakistan
• Institute for Educational Development, Pakistan

• Graduate Programmes

• School of Nursing and Midwifery, East Africa
• School of Nursing and Midwifery, Pakistan
• Institute for Educational Development, East Africa
• Institute for Educational Development, Pakistan
• Medical College, East Africa
• Medical College, Pakistan
• Graduate School of Media and Communications, East Africa
• Institute for …

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Pumpable Hours: Legal Protections For Lactating Individuals Through The Lens Of The Legal Profession, Elise Gonzalez

American University Journal of Gender, Social Policy & the Law

The Supreme Court denied women the right to be admitted to the legal profession in 1872. Since this ruling, women have entered the legal profession with force in growing numbers. Today, women comprise nearly 55% of law students across the country and 40% of practicing attorneys in the United States. Despite the growing number of women in the legal profession, women are often reminded of the profession’s sexist history, particularly during a period that is uniquely connected to women—motherhood.

We Can't Apply From The Grave: Why The Asylum Standard Of Proof Fails Those Who Need It Most, Hilana Said

American University Journal of Gender, Social Policy & the Law

A woman in Florida sits in front of her TV, unsure if the sound of static is coming from shock or the screen. Her eyes reflect the fires that blaze from within her church in Alexandria, Egypt. Numbly, the pads of her fingers attempt to call family members, praying that, for once, they skipped service. She lets go of a breath she did not know she was holding. The time between now and another attack exists on a clock that she cannot see. But she knows it is ticking.

Harmful Connections: How Tort Law Can Address Algorithmic Account Recommendation Harms And Protect Youth Social Media Users, Francesca Kennedy

American University Journal of Gender, Social Policy & the Law

In 2023, the United States Surgeon General published an advisory to bring an urgent public health issue affecting America’s youth to the nation’s attention. The urgent public health issue was the ongoing negative impact of social media on children and adolescents. The report revealed that ninety-five percent of youths aged thirteen to seventeen use social media. Exposure to harmful content poses a risk to their mental health, including body dissatisfaction, disordered eating, depression, and, in extreme cases, death. Their mental health is also harmed by predatory behaviors and interactions with malicious adults that target and exploit minors on internet platforms. …

Information Research At 30: Its Role As A Diamond Open Access Journal Supporting Scholarly Communication In Library And Information Science, Jungwon Yoon, James E. Andrews, Eunkyung Chung

School of Information Faculty Publications

Introduction. This paper examines the contributions of Information Research as a diamond open access (OA) journal within the library and information science field.

Method. The dataset was extracted from the Web of Science Core Collection.

Results. The journal’s commitment to geographical diversity, its sustained journal impact and its role as a scholar-led publisher were revealed.

Conclusion(s). The journal demonstrates the potential of diamond open access publishing while maintaining high impact and visibility.