Digital Commons Network^™

Expanding Transmobilities: Understanding Genderdiverse And Transgender Travel Behavior Through An Art-Informed Methodology, Nicholas Michael Puczkowskyj

Dissertations and Theses

Transgender and genderdiverse people face discrimination and harassment in public when making trips in Portland, OR. People who identify as genderdiverse or transgender create unique travel behavior due to the influence of their internalized and expressed gender identity and through interactions in public. This dissertation examines how gender identity influences the travel behavior of genderdiverse and transgender people and how these experiences influence their subjective wellbeing when making trips in Portland, Oregon. Traditional one-on-one interviews were conducted in conjunction with allowing the interviewees to produce art as a non-verbal form of expression and communication of their experiences making trips in …

Profiles Of Family Engagement In Head Start, Elizabeth Jane Tremaine

Dissertations and Theses

Families of young children are active participants in their child's transition to kindergarten. Head Start is designed to facilitate families' engagement in their child's learning experiences (Head Start Parent, Family, and Community Engagement Framework, 2018). This study explores family engagement in Head Start, its changes across the transition into kindergarten, and its relation to children's development of social-emotional and executive function skills.

The current study addresses limitations of previous research by relying on family perspectives of family engagement, approaching family engagement as a developmental concept, and taking a person-centered analytic approach that accounts for the multi-dimensionality of family engagement. This …

Synthesis And Characterization Of Organometallic Polymers And Their Cytotoxicity Towards Human Cancer Cell Lines, Paul Peter Slawek

Electronic Theses and Dissertations

This research aimed to synthesize organometallic polymers from dialkyl (methyl, ethyl, butyl, cyclohexyl, and octyl) and diaryl (phenyl) tin dichlorides and three organic monomers, dipicolinic acid (DPA), chloramphenicol (CH), and isomannide (IS), using interfacial polymerization. Structure-activity relationships were investigated through physicochemical characterization (light-scattering photometry, proton NMR, and IR spectroscopy) and cytotoxicity was evaluated against six human cancer cell lines (AsPC-1, PANC-1, MCF-7, MDA-MB-231, HT-29, PC-3), with cisplatin serving as the reference standard.

Five DPA/tin polymers were synthesized, with IC₅₀ values in the range of 0.60–0.71 μg/mL. Their cytotoxicity was significantly lower than that of cisplatin (0.0023-0.044 μg/mL), suggesting that …

Implementation Of A Mixed Precision Iterative Solver On An Amd Apu, Saeyeon Kim, Henrik Evers

Computer Science and Engineering Senior Theses

Solving systems of linear equations is a core operation in high-performance computing and many scientific and engineering applications. One of the most widely used direct methods for solving such systems is LU factorization. Mixed-precision methods accelerate these solvers by using low-precision LU factorization with iterative refinement, improving performance and energy efficiency while preserving high numerical accuracy. AMD Accelerated Processing Units (APUs), which integrate CPU and NPU resources, provide an opportunity to explore this approach on emerging heterogeneous architectures. However, effective NPU utilization remains challenging due to workload partitioning, buffer management, data-movement overhead, and software tooling limitations.

This project implements a …

Thermovision 3d, Daniel Louie, Iker Mendiburu Perez, Kieran Greeley

Interdisciplinary Design Senior Theses

This project presents the development of a three-dimensional thermal mapping system designed to identify energy inefficiencies in buildings. By integrating visible-light imaging with thermal sensing, the system generates detailed 3D models that visualize both structural features and heat distribution. Using photogrammetry techniques, overlapping images are processed to reconstruct building geometry, while thermal data is mapped onto the model to highlight areas of potential heat loss such as insulation gaps, windows, and structural joints.

The system combines hardware and software components, including a dual-camera setup and a custom visualization pipeline, to produce both qualitative and quantitative outputs. Users are able to …

Does A Common Threat Unite?: Alliance Formation In East Asia Under Chinese Pressure, Sean G. Mcclellan

Honors Theses

The study explores whether a shared geopolitical threat fosters alliance formation among East Asian nations, focusing on Taiwan, Japan, and South Korea in the context of increasing Chinese influence. Integrating insights from international relations theory and social psychology—particularly Realistic Conflict Theory and the out-group unifying effect—the research evaluates whether perceived Chinese aggression corresponds with increased positive sentiment toward the United States. Utilizing data from the Asian Barometer Survey, linear regression analysis is conducted to assess how perceptions of Chinese and U.S. influence, democratic values, and political affiliation shape public attitudes. Results show that while negative views of Chinese and U.S. …

Extraction Of Key Themes In Online Health Discourse Using Unsupervised Learning And Large Language Models, Miranda G. Scully

Computer Science Senior Theses

Health online discussion boards are a modern platform that allow patients to interact with each other and the healthcare system as a whole, making them valuable sources of information for clinicians seeking to better anticipate treatment experiences and barriers. This study focuses on one such community, r/suboxone, a subreddit where patients using Suboxone share their experiences and ask questions. Our analysis is motivated by previous work that proposes event-based classification systems for such posts which buckets posts from r/suboxone into one or more of five high-level labels (Access Logistics, Co-Occurring Drug Usage, Medication for Opioid Use Disorder Administration, Psychophysical Effects, …

Rehabvr: A Virtual Reality System For Upper-Body Orthopaedic Physical Therapy Rehabilitation, Winnie Brenda Wanjiru Waiya

Computer Science Senior Theses

Physical therapy is a central component of rehabilitation for musculoskeletal conditions, yet adherence to prescribed treatment remains persistently poor. Jack et al. identified pain, boredom, and insufficient feedback as key barriers to treatment adherence in physiotherapy outpatient settings,¹ and Rucinski et al. confirmed that non-adherence rates in orthopaedic populations remain between 50 and 70%, with patients who disengage facing elevated risk of reoperation, progressive functional decline, and poor clinical outcomes.² According to the World Health Organization, approximately 1.71 billion people globally live with musculoskeletal conditions,³ with shoulder pain specifically carrying a community prevalence ranging from 0.67 to 55.2% worldwide and …

Community-Based Organization Leaders' Perceptions On Efforts To Promote Informal Learning Among Young Low-Income Readers, Virginia S. Rector

Walden Dissertations and Doctoral Studies

No abstract provided.

The Perspectives Of Lesbian, Gay, Bisexual, Transgender, Queer/Questioning, Plus (Others) Teachers On The Enactment Of Their Identities At Work Amid Adverse Legislation, Mandy Rhea Manning

Walden Dissertations and Doctoral Studies

No abstract provided.

Case Study Answers Are Not Elementary: How A Positive Outlier K-5 School Beat The Odds, Douglas Aaron Ferguson

Education Dissertations

There are a limited number of case studies of positive outlier elementary schools, otherwise known as schools that are beating the odds, and more of such studies are needed in order to effectively replicate positive problem-solving solutions. Positive outlier schools and districts, the focus of this dissertation, are those that score significantly above demographically similar schools and districts on standardized state testing. For example, none of the existing case studies highlight organizational culture as a key factor despite the fact that many of the more targeted topically focused studies cite school culture as a top factor. Additionally, the longest running …

Uncovering Dkk1 As A Therapeutically Relevant Target In Aggressive Er+ Breast Cancer Using A Novel Antiestrogen, Kristen Young

Dissertations

Over 70 percent of breast cancers are estrogen receptor-positive (ERα+), meaning that the hormone estrogen drives tumor growth. Although first-line targeted therapies that directly block ERα from hormone-dependent pathologies are initially effective, almost half of patients ultimately progress. These patients show high mutational rates to the ESR1 gene that encodes for ERα. A hotspot missense tyrosine to serine mutation at position 537 (Y537S) initiates hormone-independent, allele-specific transcriptional programs that increase metastasis. While next-generation ERα-targeted therapies show promise, benefits are often limited compared to standard-of-care. Understanding the mechanisms of action used by the Y537S ESR1 breast cancer cells to evade therapeutic …

Discovery Of Bmi-Associated Gut Microbiome Signatures In The Awi-Gen 2 Cohort, Meriem Yagoubi

Theses and Dissertations

Obesity is increasing across sub-Saharan Africa amid rapid dietary, environmental, and urbanization transitions, yet the gut microbiome features associated with adiposity in African populations remain under-characterized. This study investigated whether species-level gut microbiome composition is associated with body mass index (BMI) in the AWI-Gen 2 cohort, and whether BMI-associated microbial signals remain detectable after accounting for the dominant geographic structure of the microbiome. Gut microbiome community structure and diversity were characterized across 1,665 participants, and differential abundance analysis was used to identify taxa associated with BMI after controlling for study site. Machine learning models were then trained to assess how …

Entre La Lucha: Familismo And Well-Being Of Latino Immigrant Families Navigating Manual Labor And Anti-Immigrant Sentiment, Faviola Robles Saenz

Dissertations and Theses

The United States' history of treatment toward Latino immigrants has been shaped by anti-immigrant sentiment and exploitative labor practices, creating psychological violence that harms their families' well-being. Although previous research has examined anti-immigrant sentiment, labor conditions, and familismo among Latinos, these areas are often studied in isolation, with limited attention to their intersections and how they are experienced across generations. Informed by history, prior research, and my lived experiences, this study qualitatively explored the intersections of anti-immigrant sentiment and parents' manual labor to understand how these contexts shape familismo and well-being among Latino immigrant families. This work was grounded in …

Acceptance Of Shared Autonomous Vehicles: Exploring The Attitudes And Perspectives Of Older Adults, Sara Sohaee Urbina

Dissertations and Theses

The fast development of autonomous vehicle systems will create major changes in how people move around. Previous research shows that these technologies can benefit older people who struggle with mobility, safety and access to transportation. Shared Autonomous Vehicles (SAVs) enable older people to achieve self-reliance while obtaining essential services which enhance their quality of living. The successful deployment of SAVs requires users to accept this new technology which they must also be willing to use. This research study investigates which elements affect older adults to adopt SAVs by using an extended Technology Acceptance Model (TAM) framework.

The research design of …

Ambivalence, Foremourning, And Displacement In The German Translation Of Marie Bonaparte's Topsy, Kooper Wilson

University Honors Theses

This paper offers a reading of Sigmund Freud’s German translation of Marie Bonaparte’s book, Topsy: The Golden-Haired Chow, in which the author attempts to both delay the death of her dog and mourn it in advance through what I call foremourning. I argue that the manifest subject matter of Topsy should not be interpreted away as a projection of merely human concerns, but rather that close attention to Freud’s translation introduces themes from his analytic experience which engender an appreciation of Topsy’s atopia (intractability). I draw from recent psychoanalytic theory, literary criticism, and deconstruction, especially Jacques Derrida’s seminars …

Foundations' Deep, Emily Williams, Morgan Williams

University Honors Theses

Most historic buildings do not survive as they were built, yet preservation frameworks still tend to evaluate them as if they did.

Foundations' Deep begins with a structure located in Helena, Montana 59602, a building that sits uneasily within the categories it has been asked to meet. Built in the early twentieth century, it has persisted through alteration, abandonment, and use. What remains is not a stable artifact but a record of accumulated decisions, some careful and many indifferent, now embedded in the fabric of the building itself.

The thesis grows from this condition and from the limits of the …

Office Discipline Referral Narratives, Context, And Categorization, Deanna M. Bush

Education Dissertations

This two-part qualitative study examined the experiences of students with disabilities (SWD) in the middle school discipline. Phase one was a qualitative document analysis study that examined school discipline for SWD through the lens of Critical Disability Theory (CDT), Multi-Tiered Systems of Support (MTSS), Constructivist Learning Theory, and the Vulnerable Decision Point model (VDP) in a midsize suburban district in Washington state. The study explored alignment of ODR teacher-written narratives with behavioral categories assigned to the ODR at the time of issue to determine variance based on behavior category or student disability status. Phase two a semi-structured interview (shown on …

Synthesis And Characterization Of Synergistic Bioactive– Organometallic Condensation Polymers, Francesca Isabel Mosca

Electronic Theses and Dissertations

This research focuses on the synthesis and structural characterization of polymers with anticipated anticancer and antiviral properties by combining metal-containing Lewis acids, organotin dichlorides (R2SnCl2), Group 4 metallocene dichlorides (Cp2TiCl2, Cp2ZrCl2 and Cp2HfCl2), and triphenyl Group 15 metal dichlorides (Ph3AsCl2, Ph3SbCl2 and Ph3BiCl2), with biologically active Lewis bases, lamivudine, a synthetic nucleoside, and camphoric acid, a dicarboxylic acid, to achieve synergistic effect.

Five classes of polymers were synthesized using interfacial polymerization: lamivudine and organotin dichlorides, lamivudine and Group 4 metallocene dichlorides, camphoric acid and triphenyl Group 15 metal dichlorides, camphoric acid and organotin dichlorides, and camphoric acid and Group 4 …

Diversification Of Ghost Electric Fishes (Gymnotiformes, Apteronotidae) In Tropical South America: How Traits And Environmental Factors Constrain Macroevolutionary Diversification, Jonathan Gifford Allen

Doctoral Dissertations

Neotropical electric fishes (Apteronotidae) display remarkable phenotypic and ecological diversity, offering an exceptional system for studying macroevolutionary processes in freshwater environments. Here I investigate the morphological, ecological, and historical factors shaping diversification in the clade Navajini, with a focus on craniofacial evolution, species delimitation, and biogeographic patterns. First, using high-resolution micro-CT scans, 3D geometric morphometrics, and phylogenetic comparative methods, I analyze skull shape variation across Navajini. Key traits resulting from heterocephaly exhibit strong phylogenetic signal and reflect functional differentiation among genera. Sexual dimorphism contributes significantly to cranial disparity in some lineages, while others show conserved, modular patterns likely tied to …

Blended Family Dynamics And Executive Functioning In Preschoolers: A Cross-Sectional Study, Kayla Butler

Walden Dissertations and Doctoral Studies

No abstract provided.

Effective Technology Strategies Supporting Green Supply Chain Management Within Guyana’S Oil And Gas Industry, Clairmont Andrew Austin

Walden Dissertations and Doctoral Studies

No abstract provided.

Policy Whiplash: Tariffs And Uncertainty Among Firms And Investors In 2025, Boau Lilly Shepherd

Economics Undergraduate Senior Theses

On April 2, 2025, President Donald Trump announced a series of reciprocal tariffs on U.S. trading partners, set to be implemented on April 9, 2025, a day he referred to as “Liberation Day”. Although these tariffs were paused almost immediately, they were subsequently renegotiated and revised throughout the summer of 2025. This paper finds evidence that Liberation Day caused a spike in uncertainty among firms and a spike in volatility among investors, while the subsequent summer revisions reduced uncertainty and volatility, despite tariff levels remaining substantially higher than those at the start of the year. These findings suggest that firms …

Individualism And Momentum Revisited: Evidence On The Persistence Of Cultural Drivers In Stock Market Returns, Hayley S. Sciubba

Economics Undergraduate Senior Theses

This paper reexamines the relationship between cultural differences and momentum strategy returns over the period March 2007 through March 2026, building on the Chui, Titman and Wei (2010) finding that higher individualism is associated with greater trading volume, volatility, and momentum profits. Cross-country cultural differences are measured using an individualism index developed by Minkov et al. (2017), which is related to overconfidence and self-attribution bias. Using monthly stock price data, I construct cleaned monthly returns and sort stocks into six-month momentum portfolios. Although many of the 41 countries common to the original and current samples have experienced changes in their …

Selective Contagion: Sovereign Credit Integration And Heterogeneous Shock Transmission In Emerging Equity And Derivative Markets, Fabiana Araujo Rincón

Economics Undergraduate Senior Theses

Contagion in Latin America is real but selective: the direction of spillover depends on whether a country is integrated more strongly into global or regional markets. Using a stacked event study across 90 manually identified shocks from 2001 to 2026, I estimate regional contagion and its determinants across credit, currency, equity, and derivative markets. Contagion travels through sovereign credit, not currency, and through economic, not political, shocks. Political shocks, despite their larger domestic impact, stay locally contained. The direction of spillover turns on shock origin: shocks from large, globally integrated economies depress their peers, while shocks from smaller, regionally focused …

Implied Variance Asymmetry As A Predictor Of Stock Returns Around Quarterly Earnings Dates, Matthew J. Sebastian

Economics Undergraduate Senior Theses

This paper investigates whether option-implied variance asymmetry, defined as the difference between upside and downside risk-neutral semivariances measured shortly before scheduled quarterly earnings announcements pre- dicts the cumulative abnormal return realized over the announcement win- dow. We find implied variance asymmetry positively and significantly pre- dicts announcement-window returns in S&P 500 companies: the high-minus- low quintile sort portfolio earns 45 basis points over a five-day window with a Fama-French four-factor alpha of 60 basis points, both statistically signif- icant. The results suggest a temporary break in market efficiency and are consistent with an informed-trading interpretation in which earnings specific information …

Storytelling, Gender, And The Double-Empathy Problem, Annie Rogers

Theses and Dissertations

Storytelling has been proposed as a meaningful way to facilitate empathy and connection, particularly across neurotypes. The present study examined whether a live storytelling event influenced perceptions of the autism community, empathy, and interpersonal connection, while also exploring differences on biological sex and levels of autistic traits. Participants completed pre- and post-event measures assessing relationship perceptions and connection, along with standardized measures of empathy and autistic traits. Results showed a significant increase in positive perceptions of the autism community and perceived closeness to storytellers after the event. Engagement, emotional impact, openness, and motivation to support the autism community were all …

The Evolution Of Collaborative Dialogue And Instructional Change Among Secondary Mathematics Teachers Engaged In Peer Observation, Shazia Akbar

Theses and Dissertations

This qualitative study examined how collaborative dialogue evolved across four cycles of a formative peer observation system involving one veteran and two first-year secondary mathematics teachers, exploring which aspects of that dialogue teachers attributed to changes in their instructional practice. Using the Math Talk for Equitable Participation (MTEP) framework across one academic year, data were drawn from verbatim transcripts of eight collaborative sessions and video-stimulated recall interviews. Four key findings emerged: evidence shifted from planning documents to video of student thinking, deepening pedagogical reasoning; novice teacher contributions grew from peripheral to central; relational trust fostered critical rather than merely affirming …

Flip It And Reverse It: Probing Consistency Of Llm World Knowledge Under Logical Transformations, Rhianna Smith

Computer Science Senior Theses

When assessing the extent to which someone truly understands the topics they discuss, you might ask them a series of questions that examine their knowledge from different angles. As Large Language Models (LLMs) are increasingly integrated into real-world tasks, they are often required to reason through ambiguous and uncertain scenarios that rarely have a single correct answer. In these settings, their usefulness is contingent on more than accuracy alone. Rather, it depends on the strength of the reasoning that underlies their responses. This begs the question: how might we extend these types of tests to LLMs? We formalize this informal …

Unheard Voices: Language And Humanity In Memoirs Of Immigration From Latin America To The United States, Aj Setala

Honors Projects

At the time of writing this project, aggressive Immigration and Customs Enforcement (I.C.E.) raids and mass deportations are being carried out across the U.S. The need to recognize the humanity of those targeted grows with every deportation. In this project, I address the question - What does it mean to be human? - by considering how language impacts the ways in which others affirm or deny the humanity of immigrants. To do this, I examine the role language plays in memoirs of undocumented Latin American immigrants. My analysis is grounded in Gloria Anzaldúa’s borderlands theory and César Miguel R. Vega …