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Painted By Hand, Written In The Sky: Martin Wong’S Fingerspelling As Invented Visual Language, 1982-1985, Bella Clemente

Dissertations and Theses

This thesis examines Martin Wong's (1946-1999) hand-painted fingerspelling as an invented personal visual language and vehicle of self-portraiture, analyzing three paintings created during his time in New York between 1982 and 1985: Attorney Street: Handball Court with Autobiographical Poem by Piñero (1982-1984), Compulsion (1984-1985), and Stanton Near Forsyth Street (1983). Through iconographic analysis of lingual elements in each work, including fingerspelling, graffiti, calligraphy, and poetry, this thesis argues that Wong's stylized adaptation of the American Sign Language manual alphabet reflects an evolving sense of self-identity, drawing on influences from Chinese artistic traditions, calligraphy, Kufic script, and the Nuyorican poetry and …

Meconium Metal Concentrations And Infant Temperament And Development, Fiona Fogarty

Dissertations and Theses

BACKGROUND: Prenatal exposure to metals poses significant health consequences for early childhood development. Understanding the factors influencing metal concentrations that infants are exposed to in-utero is crucial for developing targeted interventions, particularly when maternal characteristics and environmental factors, may contribute to varying levels. Meconium offers insight into in-utero exposures for the developing infant, and the effect of each individual metal may be mediated or exacerbated by another and therefore should be studied in the context of a mixture. The effect of metal mixture exposure, as measured in meconium, on milestone and temperament outcomes has yet to be determined.

DESIGN: …

Title: The Impact Of Intergenerational Program Participation On First-Year Physical Therapy Students’ Beliefs, Attitudes, And Anxiety About Aging And Older Adults: A Mixed Methods Study, Catherine Staloch

Dissertations and Theses

As the aging adult population continues to grow, the utilization and need for medical services for this population are increasing. These trends have raised concerns about the impact of ageist beliefs among health care providers on the health and well-being of older adults. Physical therapists are health care providers who care for aging adults across health care settings. Given the large percentage of physical therapists who care for older adults and the known negative health implications of ageist beliefs among providers, it is imperative that educators in physical therapy programs use learning activities that positively influence students’ beliefs, attitudes, and …

Cloud-Computing Costs And Financial Reporting: How Classification And Disclosure Choices Shape Comparability And Valuation, Salma Askar

Dissertations and Theses

Cloud computing has become a central component of firms’ information technology infrastructure, yet the accounting treatment and disclosure of cloud-related expenditures remain subject to managerial judgment under ASC 350-40. This thesis examines whether variation in cloud˗computing disclosures is associated with differences in firms’ information environments and reporting behavior. Using textual analysis of 10-K filings for U.S. public firms from 2004 to 2025, the study constructs measures of cloud-related disclosure volume, optimistic tone, and linguistic intensity. It examines their association with analyst forecast error, analyst forecast dispersion, financial statement comparability, and real earnings management. The results indicate that cloud disclosure characteristics …

Exploring K-2 Teachers’ Perspectives Around Screen Time In Blended Learning Classrooms, Cameryn Lee Ronspies

Dissertations and Theses

The integration of digital technologies in primary education has transformed instructional practices, yet the use of screen time in K-2 classrooms remains a debated issue. While prior research has examined the effects of screen time on children’s development and learning outcomes, little is known about how teachers themselves make decisions regarding its use in the classroom. This study explores how K-2 teachers in blended learning environments navigate the complexities of screen time. Despite debate among researchers, few policies exist to guide teachers in regulating the quality and duration of screen use, leaving teachers to make complex decisions independently. Grounded in …

Impact Of Borderline Personality Features On Menstrual Phases And Pain Perception, Morgan Maples

Dissertations and Theses

Pain is a pervasive global health concern that affects approximately one in five adults worldwide and carries substantial psychological and economic costs. Chronic and persistent pain often co-occurs with emotional dysregulation and maladaptive coping behavior, suggesting the involvement of complex biopsychosocial mechanisms including personality pathology. Specifically, borderline personality disorder (BPD) features, have been associated with altered pain perception, increased emotional reactivity, and higher engagement in non-suicidal self-injury (NSSI). Further, hormonal fluctuations across menstrual cycle phases have been linked to variability in pain sensitivity, though findings remain inconsistent. Despite the growing body of literature on pain and personality, little is known …

Barycentric Subdivision And Hyperbolic Geometry, Hannah Elisabeth Steger

Dissertations and Theses

Barycentric subdivision of a triangle is the geometrical process of repeatedly subdividing a triangle by connecting the midpoints of the sides to the opposite vertices. The transformations which determine this subdivision form a group acting on the hyperbolic plane, action which we will show is topologically transitive. We find specific cases when the barycentric subdivision process leads to flat triangles (all vertices on the x-axis) and, on the contrary, situations when shapes are positioned on an orbit that is a circle, hence never becoming flat. We will also analyse this process when the starting triangle is already flat and we …

Creating A Modern American Piano: Antecedent, Launch, And Reinvention Of Mason & Hamlin's Piano Line Through 1905, Arian Sheets

Dissertations and Theses

The American piano industry was in a significant period of technical innovation, increased production, and standardization during the second half of the nineteenth century. This resulted in the American form of the instrument dominating the design and sound ideals still expected of the modern piano. Mason & Hamlin, a major reed organ company, entered the piano market in the early 1880s, relatively late compared to the largest, and most market-dominant companies, such as Steinway and Chickering. This thesis examines the origin and early implementation of the designs and innovations that have become standard for the modern American piano, and how …

Nostalgic Rhetoric: Unraveling An "Authentic" Past, Quinn Thomas Gienapp

Dissertations and Theses

Our changing awareness of time and memory can generate feelings of nostalgia that impact perceptions of the past, present, and future. Nostalgia should not be described as inherently good or bad. In certain contexts, nostalgia can be used as a positive or negative tool to convey values, arguments, and reactions to the past that are much more than simply appealing to feelings of longing. In this thesis, I examine how nostalgic rhetoric is used to convince individuals of various ideas surrounding memory, culture, and politics. In particular, I identify and describe three modes of nostalgic rhetoric: gratification, denial, and subversion. …

Perceived Discrimination And Posttraumatic Stress In People Of Color: The Moderating Role Of Ethnic-Racial Identity And Psychological Flexibility, Jacinta O. Anyanwu

Dissertations and Theses

Perceived discrimination is highly prevalent among people of color (POC) and is strongly associated with elevated posttraumatic stress symptom (PTSS) severity, even after accounting for socioeconomic factors. Guided by the minority stress model, this study examined whether two resilience factors - ethnic racial identity and psychological flexibility moderated the association between everyday discrimination and PTSS in a trauma exposed adult sample of POC. Participants (N = 355) were recruited through Prolific, an online crowdsource platform, and completed self report measures assessing discrimination, PTSS severity, ethnic racial identity, and psychological flexibility. Everyday discrimination was a robust predictor of PTSS severity across …

Development Of An Adhesive Emulsion Hydrogel For Soft Tissue Reconstruction, David J. Alpert

Dissertations and Theses

Soft tissue filling materials are most commonly associated with various aesthetic, cosmetic procedures, primarily using lightly cross-linked hyaluronic acid to fill wrinkles and give facial features a more youthful appearance. These natural materials are biocompatible but degrade over time while more persistent synthetic fillers may provoke a chronic inflammatory response. Migration from the injection site is also a key factor as this may not only render the implant non- functional but necessitate further procedures for removal of the foreign material. Such concerns are more pronounced for soft tissue reconstruction procedures (e.g., to treat congenital defects or traumatic injuries), which require …

Design, Testing And Controls For Air Source Heat Pump System In Cold Climates Using Natural & Conventional Refrigerants, S M Abdur Rob

Dissertations and Theses

Fossil-fuel based heating systems used in the residential buildings in northeastern U.S region are not only inefficient but also largely responsible for the greenhouse gas emissions in U.S. Electrification of the buildings has been proved to be the most efficient way to reduce the greenhouse gas emissions where Heat Pumps can be the best alternative to replace the natural gas based heating system to accelerate the electrification process. Among different types of heat pumps, the Air Source Heat Pump (ASHP) system is widely used due to the easy installation and energy efficiency. Conventional heat pump technologies use various types of …

Hybridization And Introgression In Marine Invertebrates: Population Genomics Of Phymactis Papillosa And Asterias Sea Stars, Christopher J. Dookie

Dissertations and Theses

Hybridization and introgression are evolutionary significant processes in marine invertebrates (Sanford & Kelly,2011) yet genome-wide investigations of gene flow in these taxa remain limited relative to vertebrate systems (Marchi et al., 2021). This thesis presents genomic analyses of hybridization and introgression in two marine invertebrates occupying contrasting oceanographic settings and characterized by contrasting genomic datasets: restriction-site associated DNA sequencing (RADseq) SNP data for the eastern Pacific sea anemone Phymactis papillosa and whole genome sequencing (WGS) data for the North Atlantic sea stars Asterias rubens and Asterias forbesi. For each system, I applied coalescent-based species tree inference using CASTER (Zhang …

Mad Or Uncontrollable? Reading Female Madness In Three Gothic Texts, Amy Marie Bueno

Dissertations and Theses

My thesis employs comparative close reading framed by disability studies to analyze representations of female madness in Charlotte Brontë’s Jane Eyre, Jean Rhys’ Wide Sargasso Sea, and Isabel Allende’s “If You Touched My Heart.” Drawing on theories of socially constructed disability, it argues that Bertha, Antoinette, and Hortensia are framed as “mad women” not through inherent pathology, but through patriarchal violence, colonial domination, and institutional power. By integrating the social model of disability with feminist theory, this thesis examines how women are rendered disabled within societies influenced by Social Darwinism and eugenic ideologies.

This thesis further incorporates Gothic theory and …

Disaster Risk Management During Climate Emergencies In The Dominican Republic And Puerto Rico, Rosleny Ubinas

Dissertations and Theses

This paper analyzes the DRM approach as an effective framework in addressing climate emergencies across the Dominican Republic and Puerto Rico. These two Caribbean regions, with high hurricane exposure and differing response structures, are deeply shaped by their governments and affiliated international organizations. Disaster Risk Management is the systematic process of using laws, plans, institutions, and community networks to reduce vulnerability to hazards and coordinate effective response when disasters occur. It covers the full cycle, from prevention to reconstruction and rebuilding more resiliently. The Dominican Republic’s law-based intervention led to greater local-level community participation during disasters with its embedded volunteer …

Relational Spirituality And Maternal Coping In Carceral Contexts: A Participatory Action Study Of Meaning-Making And Mental Health Among Formerly Incarcerated Mothers, Jessica Peters

Dissertations and Theses

Maternal incarceration carries significant psychological, familial, and community consequences, yet limited research centers the mental health experiences of mothers themselves. This study explored how religious and spiritual engagement shape mental health and coping among formerly incarcerated mothers using a participatory action research framework. Guided by this, small groups and semi-structured interviews were conducted with 10 mothers in collaboration with a community-based organization. This approach prioritized lived experience and aimed to reduce barriers to participation among a population often mistrustful of research institutions. Data were analyzed thematically to identify patterns in psychological distress, coping strategies, and meaning-making. Findings revealed pervasive and …

Examining The Spatial Variability Of Summer Heat In New York City Using Landsat Land Surface Temperature, Ryan Kabir

Dissertations and Theses

Extreme heat is the leading weather-related cause of death in the United States, and in New York City (NYC) approximately 370 heat-related deaths occur annually on average. The spatial distribution of surface heat exposure across NYC is highly uneven, low-income neighborhoods and communities of color consistently face higher temperatures, yet the intraurban spatial structure of land surface temperature (LST) during heatwave events has not been systematically characterized at high resolution. The New York City Panel on Climate Change Fourth Assessment (NPCC4) identifies this as an explicit research gap, noting that its own projections, based on global climate models downscaled to …

Civil War Memory In New York City, 1861-1902, Kevin J. Sugrue

Dissertations and Theses

This thesis examines how New York City experienced, understood, and later remembered the American Civil War, from the outbreak of war (1861) through the dedication of major monuments at the turn of the twentieth century (1902). Although New York was the Union’s largest city and its most significant source of troops, casualties, industrial output, financial capital, and press coverage, the city’s wartime experience was deeply conflicted. As a Democratic stronghold and home to large populations of recent immigrants and working-class laborers, New York’s support for the Union was broad but conditional, fractured by class, ethnicity, race, and political allegiance. These …

China-U.S Relations: Techno‑Nationalism, Strategic Entrapment, And Taiwan., Prince Y. Munya Mr.

Dissertations and Theses

Abstract

This thesis examines how China–U.S. relations evolved from a manageable strategic rivalry into a more rigid and increasingly difficult form of competition after the Obama administration’s “Pivot to Asia.” It argues that traditional explanations such as power transition theory alone cannot fully explain the deterioration of the relationship. Instead, the study introduces the concept of techno-nationalism, where technological leadership becomes tied to national identity, economic security, and geopolitical power, particularly in areas such as semiconductors, artificial intelligence, and supply-chain security. Through historical analysis and policy tracing, the thesis develops the concept of strategic entrapment to explain how both Washington …

Analyzing Changes In Russian Olive Distributions Along The Missouri River In Response To Flooding, Zachary Schild

Dissertations and Theses

Russian olive (Elaeagnus angustifolia; RO) is an invasive, nitrogen-fixing tree that has spread across riparian ecosystems in the western United States, potentially hindering native tree recruitment, reducing species richness, and impacting wildlife. RO has established within the Missouri National Recreational River (MNRR) in part due to modified flow regimes following dam construction. This study aimed to map the spread of RO using high-resolution National Agriculture Imagery Program (NAIP) imagery (2010, 2012, 2018, 2022) and evaluate the effects of the 2011 and 2019 floods on RO distributions in the Missouri National Recreational River (MNRR). RO cover in this area has expanded …

Machine Learning Prediction Of Federal Appellate Court Outcomes: A Multi-Circuit Analysis With Administrative Law Implications, Nicky Nuertey Apenahier

Dissertations and Theses

Federal appellate courts are the final arbiters in many cases, yet systematic machine learning analysis across all twelve circuits remains largely absent from the computational law literature. With courts of appeals deciding tens of thousands of cases annually and the Supreme Court reviewing only a fraction, understanding what predicts reversal outcomes has both theoretical importance and practical consequences for litigants, attorneys, and judicial administrators. This study addresses that gap using eleven years of federal appellate decisions from the Federal Judicial Center’s Integrated Database. A systematic comparison of twenty-five machine learning models, spanning five algorithms and five class-imbalance correction strategies, identifies …

Retention In A Community College In A Rural State In The Midwest: Factors Associated With Persistence And Withdrawal, Samantha Reeves Grady

Dissertations and Theses

This qualitative case study examined the factors associated with students’ persistence or withdrawals from courses during the Fall 2025 semester at a community college in the Midwest. Guided by research questions exploring what factors supported students in completing their courses and what prompts course withdrawals. Data was collected through semi-structured interviews and focus groups with students who had withdrawn from one or more courses during the Fall 2025 semester. Using thematic analysis, several key themes emerged. Findings indicated that academic difficulties contributed significantly to student withdrawals. Additionally, course load intensity and competing external factors further hindered student persistence. Students, in …

Orexin Receptor Modulation In Amygdalar Stress Circuitry Differentiates Resilient And Vulnerable Phenotypes, Megan Marie John

Dissertations and Theses

Social stress is important for evaluating threats and resource opportunities, however, chronic exposure initiates the onset of psychological disorders, such as anxiety, depression, and post-traumatic stress disorder (PTSD). Stress responsiveness varies between individuals and sexes, resulting in disproportionate diagnoses and ineffective treatment outcomes. Enhancing therapeutic efficacy requires understanding of stress responsivity, phenotype development, and neurocircuitry modifications. Key contributors to stress responsiveness, such as threat of aggression and motivational initiation, influence the development of resilient or vulnerable phenotypes through behavioral and molecular adaptations to stress-related neurocircuitry. The basolateral amygdala (BLA) is a brain region associated with fear learning and integrates stress …

Key-Point-Based Sign Language Translation With Multi-Stream Motion Modeling And Cross-Lingual Transfer, Alex Muchiri Kagozi

Dissertations and Theses

Automatic sign language translation remains challenging because models must recover linguistic structure from complex visual motion while relying on limited annotated data. This thesis investigates whether compact skeletal key-points can serve as an effective alternative to RGB video for continuous sign language recognition and translation, motivated by the privacy, computational efficiency, and transferability of skeletal representations. To address this problem, a segmented key-point-based framework is evaluated in continuous sign language recognition (Sign2Gloss), gloss-mediated translation (Sign2Gloss2Text), gloss-free translation (Sign2Text), and transfer learning within a common modeling pipeline. The proposed framework is a motion-aware multi-stream transformer encoder. Rather than processing the signer …

Women's Social Roles And Alcohol Use Among Military-Connected Spouses, Sheila Kathleen Mccabe Nickerson

Dissertations and Theses

Increases in women's alcohol use are an intensifying public health problem in the United States, contributing to a hidden epidemic of alcohol-related mortality. Women's alcohol consumption is often not openly discussed or recognized due to social stigma, the perception that women drink less than men, and the fact that women can experience negative health consequences from lower levels of alcohol consumption (relative to men), making the issue less visible than it actually is. A range of factors potentially influence women's drinking, including social roles (i.e., mother); yet, the literature is varied as to whether the combination of multiple-role demands/expectations fosters …

Mechanical Improvements And Control Implementation On A Biomimetic Quadruped Model, Matthew Jack Lutz

Dissertations and Theses

Robotic development started billions of years after earth first began biological prototyping. While the evolutionary process in animals is quite different from robotic prototyping, it still remains no surprise that animals remain more agile, more efficient, and more adaptable than even the most advanced engineered robots to date, simply due to the sheer length of their improvement process. While bridging this improvement gap between deficits in robots and the abilities of animals is difficult, a specific subfield of robotics engineering has attempted to do so using biomimetic robotics. At Portland State, the Agile and Adaptive Robotics Lab (AARL) studies these …

"I Like The Idea In Theory": Experiencing The Imperial Matrix Through Legal Gender Marker Changes And Nonbinary Disidentifications, Wynn Strange

Dissertations and Theses

Since 2018 twenty-two states and the District of Columbia have implemented administrative changes that provide a third gender option on at least one state identification document allowing nonbinary and intersex people the opportunity to select a gender marker that reflects their gender identity. This study draws from 28 interviews with agender or otherwise nonbinary people living in Maryland and California. I use queer of color and critical trans theory to consider the implications of legal gender marker changes. This research explores how social, historical, and geographical location can influence ones' awareness of, experiences with, and relation to real and imagined …

Leveraging High-Performance Cloud Computing To Model Underwater Acoustic Propagation And Scattering From Time-Evolving Rough Sea-Surfaces Using The Finite-Difference Time-Domain Method, James Alexander Higgins

Dissertations and Theses

This dissertation presents a two-dimensional (2D) Finite-difference Time-domain (FDTD) model for simulating underwater acoustic propagation and scattering from a one-dimensional (1D) time-evolving rough sea-surface. The techniques discussed are extendable to three spatial dimensions. Traditional acoustic modeling techniques often rely on a "frozen" sea-surface assumption, which proves inadequate for long-duration signals interacting with the time-evolving boundary at many different wave height displacements during its transit. To address this, a new FDTD update equation incorporating a variable subgrid is developed, significantly enhancing spatial accuracy at the boundary without increasing computational cost or compromising stability.

The model's accuracy is rigorously validated against established …

Exploring The Experiences Of White Passing And White-Assumed Latine College Students, Emanuel Magaña

Dissertations and Theses

Between 2009 and 2019 Latine college enrollment has increased, yet retention and graduation rates lag those of their white peers. While barriers for Latine students are well-documented, the influence of colorism, particularly among lighter-skinned or white passing students, remains understudied. This study utilized a qualitative case-study approach grounded in CRT and LatCrit and based on a Street Race Praxis framework. This study explored the experiences of twelve white passing and/or white-assumed Latine students at an emerging HSI in the Pacific Northwest. Using Testimonio informed approach and Counterstory, I drew from interviews, pláticas, site observations, and document analysis to create four …

From Cafes To Competitiveness: The Influence Of Amenities On Office Values And Suburban Economic Development In Portland, Or, Jihye Kang

Dissertations and Theses

This dissertation examines the spatial and economic implications of urban amenities in the formation of suburban office markets in the post-pandemic period. The research applies principles from agglomeration theory, spatial econometrics, and urban planning to analyze the statistical relationships between amenity distribution, rent formation, and location behavior across central and non-central submarkets.

The research consists of three integrated papers focused on the Portland–Vancouver–Hillsboro, OR–WA Metropolitan Statistical Area (MSA). The first paper employs spatial econometric modeling, specifically a Spatial Autoregressive Model with Autoregressive Disturbances (SARAR), to examine the relationship between proximity to cafés and office rent levels in Portland’s central business …