Digital Commons Network^™

Imaging-Based Colorimetric Gas Sensing For Wearable Applications, Syed Saad Ahmed

Electronic Theses and Dissertations

Continuous monitoring of gases is a critical challenge for wearable health monitoring systems and portable environmental gas detection. The technology used for gas detection, including electrochemical sensors, metal oxide semiconductors, and non-dispersive infrared systems, is based on bulky optical components, which limit their practicality as an ideal tool for wearable and field-deployable stages. This thesis investigates if the passive colorimetric chemistry read-out provided by a low-power CMOS imager-based architecture can provide a non-invasive alternative across two different application domains: medical transcutaneous CO₂ monitoring systems and toxic gas detection from environmental. Two sensing platforms were developed and evaluated. In the first …

Preservice Teachers’ Perceptions Of Ai- And Human-Generated Feedback On Lesson Plans, Gui Ying Annie Yang-Heim, Xi Lin

Faculty Publications - College of Education

This study examines the role of AI peer reviewers in evaluating preservice teachers’ guided reading lesson plans at a U.S. university. A quasi-experimental design compared two groups: one receiving traditional human peer reviews and another using ChatGPT as a peer reviewer. Data sources included peer review reports and student survey responses. Grounded in the Zone of Proximal Development and effective feedback literature, the study investigates how AI feedback influences critical thinking and engagement during lesson planning. It also explores preservice teachers’ attitudes toward AI versus human feedback. The findings demonstrate both the advantages and disadvantages of AI-generated feedback which provides …

Rethinking Literacy, Datafication, And Racial Power In Access Is Capture: How Edtech Reproduces Racial Inequality, Anne C. Holdren

Faculty Publications - College of Education

No abstract provided.

They Don't Talk Very Good: Attending To Raciolinguistic Socialization In Early Childhood, Erin Quast

Faculty Publications - College of Education

In this article, I share experiences from my roles as a teacher, researcher, and parent to show how raciolinguistic ideologies take hold in early childhood. Specifically, I illustrate how children come to uphold English superiority, map language to belonging, and make judgments about whose language counts. In sharing these experiences, I call on educators and caregivers to attend to raciolinguistic socialization and work toward disruption so that all children's languages are valued in literacy learning. I suggest centering multiple languages, cultivating curiosity, and questioning curricular assumptions as ways to work alongside children in challenging hierarchies and creating learning spaces that …

Guide To The School Of Peace Studies Dean Papers (University Of San Diego), University Of San Diego School Of Peace Studies

University Records

The Joan B. Kroc School of Peace Studies at the University of San Diego was founded in 2007 under President Mary E. Lyons in order to expand the active peacebuilding mission of the Institute for Peace and Justice. With the creation of this school, the study of peace and justice at USD grew from a minor and small masters program run by another academic unit into an undergrad major and later graduate program centering on peace and justice, social innovation, humanitarian action, conflict management and resolution, and restorative justice. Father William R. Headley was selected as the inaugural dean of …

Unresolved Challenges Of Fuel Cell Propulsion Systems In Urban Air Mobility: An Mbse-Based Systematic Literature Review, Johannes Bachler, Stephen Wright, Kari T. Koskinen

Research Outputs: 2025-Present

The purpose of this paper is to investigate the unresolved challenges in fuel cell propulsion system integration in small-category VTOL-capable aircraft, addressing a critical gap in the existing literature by elaborating an MBSE-based systematic literature review with the PRISMA content analysis strategy. The methodology reviewed 122 papers in peer-reviewed journals published from 2000 to 2024 and included keyword research in four relevant publication platforms before analyzing the papers in a deductive MBSE V-model strategy combined with an inductive, data-driven research analysis. The results reveal a significant misalignment between identified barriers and proposed future research, indicating that current R&D efforts are …

From Idea To Implementation: Evaluating The Influence Of Large Language Models In Software Development—An Opinion Paper, Sargam Yadav, Asifa Mehmood Qureshi, Abhishek Kaushik, Shubham Sharma, Roisin Loughran, Subramaniam Kazhuparambil, Andrew Shaw, Mohammed Sabry, Niamh St John Lynch, Nikhil Singh, Padraic O'Hara, Pranay Jaiswal, Roshan Chandru, David Lillis

Research Outputs: 2025-Present

The introduction of transformer architecture was a turning point in natural language processing (NLP). Models based on the transformer architecture, such as bidirectional encoder representations from transformers (BERT) and generative pretrained transformer (GPT), have gained widespread popularity in various applications such as software development and education. The availability of large language models (LLMs) such as ChatGPT and Bard to the general public has showcased the tremendous potential of these models and encouraged their integration into various domains such as software development, for tasks such as code generation, debugging, and documentation generation. In this study, opinions from 11 experts regarding their …

Towards Optimal And Resilient Ac/Dc Microgrids: Control Design, Analysis, And Implementation, Jun Zhang

Electronic Theses and Dissertations

Microgrids serve as a small-scale power grid for utilizing renewable energy to enhance energy reliability, sustainability, and resilience. As an autonomous system, an islanded microgrid can disconnect from the utility grid and operate independently by maintaining system voltage and frequency. However, this new feature introduces coordination problems among distributed generators (DGs), such as 1) how to make sure the voltage profile and current sharing in DC microgrid with different types of converters; 2) how to reduce the impact of cyberattack when the system coordination is performed based on communication, and 3) how to calculate the steady state under a droop …

Godsightings: In The Wake Of A Man Saved By God Who Then Became His Photographer, Floyd Daniel

Daniel Collection

Autobiography of Floyd Daniel, photographer. The Daniel Photography collection, part of the Whitworth Special Collections, contains 1500 publications on the history of photography.  Books either focus on photography as an art form and communication medium, or that exemplify photographic excellence. Historically significant applications of photography are also included in  this collection. Originally the private collection of Floyd Daniel, it was gifted to Whitworth in 1995. The collection was expanded by subsequent additional gifts by Floyd and Shirley Daniel of Seattle.

Emanata Presents: Hunger (2026)

Emanata, 2014-

Started by illustrator and comics artist Chris Kindred in 2014 with Weird, Vol. 1, Emanata is VCU’s first-ever comics anthology.

Amendment: Literary And Art Journal (2026)

Amendment, 2004-

Amendment is a VCU student-produced progressive literature and art journal that provides a platform for students to promote equality, tolerance, and social progression through artistic expression.

Psychosocial Distress: Incidence And Indicators After Physical Trauma, Elizabeth Williams

Graduate Research Theses & Dissertations

The purpose of this dissertation is to examine factors that contribute to the development of psychosocial distress following unintentional physical injury. While existing research has explored psychosocial distress and protective factors in intentional trauma—such as assault or self-inflicted injury—unintentional injury remains comparatively understudied. Guided by the hypothesis that higher pre-existing resilience protects individuals from developing psychosocial distress after an adverse event, this dissertation employs a three manuscript design. Chapter 1 provides an overview of the dissertation, while each manuscript contains its own introduction, literature review, methods, results, and discussion. Chapter 2 presents Manuscript 1, which analyzes the incidence of pre-existing …

Personhood Amidst Process, Bennett B. Gilbert

History Faculty Publications and Presentations

Both process philosophy and key forms of philosophical personalism aim to harmonize the flux of reality, especially of organisms, with cosmic values and human meaningfulness. This is because both must face our mortality. This paper makes four suggestions for considering further the connection between these two approaches. First, that process philosophy can supply for personalism a thoroughly reasoned ground for nonreducible complexity. Second, that process thought borrows from personhood its model for cosmic creativity. Third, that both approaches share strong notions of the interdependence of all parts of a relational universe. And fourth, that they differ in respect of moral …

Handwritten Poetry By Darrell Grayson, Darrell Grayson

Darrell Grayson Creative Writings

Handwritten drafts of poetry by Darrell Grayson.

Darrell Grayson Undated Poetry, Darrell Grayson

Darrell Grayson Creative Writings

Selected poems from Darrell Grayson.

The Economics Of Corruption In The Philippines: Distorted Incentives, Weakened Institutions, And The Cost To Growth And Freedom, Marites M. Tiongco, Caesar B. Cororaton, Francine Ysabel D. Gañgan

Angelo King Institute for Economic and Business Studies (AKI)

No abstract provided.

Patterns, Pressures, And Pathways : An Ethnographic Study Of Discipleship In Nepali-Speaking Immigrant Churches In The United States, Ram Kumar Budhathoki

ATS Dissertations

No abstract provided.

01 Electrostatics I, Gerhard Müller

Electromagnetism (2026)

Part 1 of course materials for Electromagnetism taught by Gerhard Müller at the University of Rhode Island.

02 Electrostatics Ii, Gerhard Müller

Electromagnetism (2026)

Part 2 of course materials for Electromagnetism taught by Gerhard Müller at the University of Rhode Island.

03 Electrostatics Iii, Gerhard Müller

Electromagnetism (2026)

Part 3 of course materials for Electromagnetism taught by Gerhard Müller at the University of Rhode Island.

07 Magnetostatics Ii, Gerhard Müller

Electromagnetism (2026)

Part 7 of course materials for Electromagnetism taught by Gerhard Müller at the University of Rhode Island.

08 Electrodynamics I, Gerhard Müller

Electromagnetism (2026)

Part 8 of course materials for Electromagnetism taught by Gerhard Müller at the University of Rhode Island.

Integer-Valued Time Series Model Via Copula-Based Bivariate Skellam Distribution, Mohammed Alqawba, Norou Diawara, Mame Mor Sene

Mathematics & Statistics Faculty Publications

Time series analysis is crucial for modeling and forecasting diverse real-world phenomena. Traditional models typically assume continuous-valued data; however, many applications involve integer-valued series, often including negative integers. This paper introduces an approach that combines copula theory with the bivariate Skellam distribution to handle such integer-valued data effectively. Copulas are widely recognized for capturing complex dependencies among variables. By integrating copulas, our proposed method respects integer constraints while modeling positive, negative, and temporal dependencies accurately. Through simulation and an empirical study on a real-life example, we demonstrate that our class of models performs well. This approach has broad applicability in …

From Screens To Stress: Public Health Implications Of Cancer Worry In A Digitally Connected World, Shreya Mathur, Ethan Burns, Michael Pokojovy, Tzu-Liang Bill Tseng, Sunil Mathur

Mathematics & Statistics Faculty Publications

Aims:

This study examines how digital information environments, genetic testing experiences, health behaviors, and psychological distress influence cancer-related worry among adults in the United States. It further considers the public health implications of elevated or reduced cancer worry for prevention and risk communication.

Methods:

Data were drawn from a nationally representative survey of 6,252 U.S. adults. Measures included reliance on social media for health decision-making, smoking status, history of genetic testing, and psychological distress. Multivariable analyses assessed associations between these factors and levels of cancer worry.

Results/Findings:

Reliance on social media for health decisions was associated with greater cancer worry, …

Preserving Progress: Why The Dd Network Matters Now More Than Ever, Matt Wappett

Developmental Disabilities Network Journal

No abstract provided.

Introduction To Christian Ethics, Michael Knight, Lizette Knight

Academic Books

No abstract provided.

On The Clock: The Centrality Of Time In Teacher Work, Jack Schneider, Ashley Carey, Ayana Bass, Breanne Lucy, Babatunde Alford, Nathan Jones

Education Faculty Publications

American teachers work substantially more hours than their international peers; yet much of this work occurs outside the contract day. Despite this, teachers in the U.S. consistently report insufficient time to complete essential tasks—particularly lesson planning, collaboration, and professional reflection. This paradox of long working hours and persistent time scarcity creates chronically high workloads, with documented consequences for teacher stress, burnout, and turnover. Ultimately, these conditions affect student outcomes and the sustainability of the profession. Yet time continues to be overlooked in policy design and implementation.

This paper proposes an ecological framework with six interconnected components: education policy, professional context, …

Association Between Caregiver Status And Physical And Mental Health Among National Senior Games Athletes, Chibuzo Uchechukwu Victor Obasi

Graduate Research Theses & Dissertations

As the population ages, more people rely on informal caregivers, which puts many older adults at risk for health problems. Caregiving can be meaningful and strengthen family bonds, but it often leads to more psychological stress, especially for older adults who also have their own health concerns. Research shows that regular physical activity can help older adults build resilience and improve their mental well-being. Still, we know little about the health of older caregivers who stay very active. This study examines the health effects of caregiving among members of the National Senior Games Association (NSGA), a group of highly active …

The Sub-Lethal Effects Of Trematode Parasites On The Migratory Behavior Of Lesser Scaup (Aythya Affinis), Scott Alan Herman

Graduate Research Theses & Dissertations

The introduction of the invasive freshwater faucet snail (Bithynia tentaculata) and its associated parasites in the Upper Mississippi River and Great Lakes Region provides the opportunity to investigate how anthropogenic stressors impact the life history of lesser scaup (Aythya affinis) using the Mississippi Flyway. To understand the life histories and interactions between lesser scaup and faucet snails we examined historical records, research, and ecology textbooks. Our literature review identified critical knowledge gaps in lesser scaup literature surrounding population dynamics, reproduction, and migration. Specifically, the sub-lethal effects of invasive trematodes on the migratory behavior of lesser scaup in the Upper Mississippi …

Exploring African Students’ Experiences With Culturally Responsive Mental Health Apps In The U.S., Emelia Essumanba-Josiah

Graduate Research Theses & Dissertations

Digital mental health applications have proven to be effective, yet adoption remains very low among African international students in the United States. This study investigated how 17 university students perceive the usefulness of mental health apps, evaluate existing tools through their cultural lens, and recommend what a culturally responsive app would look like – all through a semi-structured interview with an app exploration exercise at a Midwestern public university. Guided by the Technology Acceptance Model and the African-Centered Wellness Model, there were six (6) key themes that emerged revealing participants carried skewed pre-migration mental health frameworks, dealt with their stressors …