Digital Commons Network^™

Tree-Equity And Environmental Justice Discourses Among Urban Forestry Professionals In Portland: Current Impacts And Future Implications, Axcelle Deone Bell

Dissertations and Theses

Urban tree equity is critical for addressing environmental justice and mitigating the effects of climate change in cities. This study investigates how professionals in Portland's urban forestry sector conceptualize and implement tree equity, focusing on equity and justice discourses. Through 27 semi-structured interviews with 29 professionals from government agencies and NGOs, I examine how these discourses shape decisions regarding tree planting, distribution, and maintenance, particularly in underserved communities. The analysis draws on political ecology, systems dynamics, and structuration theory to explore the systemic barriers perpetuating inequities in tree canopy distribution. The findings reveal tensions between different approaches to equity, such …

Forest Fires Increase Mid-Winter Snowmelt In The Western Oregon Cascades, Sage Ebel

Dissertations and Theses

As the spatiotemporal overlap between burned forests, seasonal snow, extreme precipitation, and mid-winter warming continues to increase with climate change, it is critical we quantify the impacts of forest fires and rain-on-snow (ROS) on mid-winter snowmelt and snow-water resources. In the Pacific Northwest, the release of large volumes of meltwater to downstream receiving water from already vulnerable snowpacks can have catastrophic consequences. I show that forest fires doubled mid-winter snowmelt proportions as compared to unburned reference sites, using a novel network of snow monitoring and micrometeorological stations installed across an elevational and forest type gradient in a burned watershed in …

Integrative Approaches To Climate Resilience Planning: Application Of A Plan Evaluation Framework, Maulsri Jha

Dissertations and Theses

In the last two decades, urban governments have streamlined and prioritized the creation and implementation of climate resilience plans to cater to the communities' vulnerabilities. Existing research illustrates that there is a gap in understanding how, or if, empirical (evidence-based) data are incorporated into the design and implementation of such plans and the extent to which their inclusion impacts outcomes in terms of vulnerability reduction. There is also a gap in the systematic study of their outcomes in terms of community resilience, and whether equity and environmental justice are promoted as priorities.

The purpose of the research is to understand …

Turbulent Structures In Coupled Wind-Wave Flows, Cerrina Mouchref

Dissertations and Theses

The interactions between wind and waves in offshore environments are complex and have yet to be fully understood. Analyzing these interactions is motivated by an increased interest in climate modeling and the deployment of offshore construction, such as offshore wind farms. In this study, experiments are performed in a wind tunnel using particle image velocimetry (PIV) to analyze wind-wave interactions over various wave and wind speeds. The addition of the wave, a moving boundary, leads to the use of Reynolds triple decomposition in order to separate the turbulent and wave-phase coherent fluctuations. A curvilinear coordinate system was used to analyze …

Benefits Of A Hybrid Learning Environment On Work-Life Balance, Thomas Robert Anez

Dissertations and Theses

This study explores the impact of hybrid learning on the work-life balance of graduate-level students, highlighting both the opportunities and challenges associated with this evolving educational model. Hybrid learning offers flexibility, enabling students to balance academic responsibilities with professional and personal commitments. Many students benefit from reduced commuting time, asynchronous learning options, and the ability to tailor their schedules to fit their needs. However, the study also reveals challenges, including difficulties in maintaining clear boundaries between work, school, and personal life, and the potential for increased workload perception and burnout. Through a qualitative, phenomenological approach, this research captures the lived …

Recruitment, Reprogramming, And Function Of Trpv1+ Sensory Nerves In The Development And Progression Of Head And Neck Cancer, Anthony Restaino

Dissertations and Theses

Head and neck squamous cell carcinomas (HNSCC) are an epithelial cancer prevalent across the world and are divided into two subcategories: human papillomavirus-mediated (HPV+) and carcinogen-mediated (HPV-) HNSCC. These subgroups have distinct patient populations, divergent responses to therapy, and prognoses, however the foundational mechanisms that facilitate these differences are not well understood or defined. Recently, the presence and function of sensory neurons within the tumor environment of various solid tumors has been identified and investigated. Herein, we identify differences in the presence of TRPV1+ sensory neurons and neuron structures in the tumor environment of HPV+ and HPV- HNSCC, correlating with …

Evaluating A Novel Lifestyle Intervention Trial: Mitigating Type 2 Diabetes, Hypertension And Depression In Adults With Intellectual And Developmental Disabilities Living In Adult Family Homes, Matthew Lee Velissaris

Dissertations and Theses

This study evaluated a 90-day lifestyle intervention for nine ambulatory adults with intellectual and developmental disabilities (IDD) residing in three adult family homes (AFHs). The intervention integrated approximately 120 minutes per week of structured exercise, promotion of the Mediterranean-style eating pattern emphasizing whole foods and omega-3–rich seafood, and adjunctive mindfulness-based cognitive therapy. Using a single-group pre–post design, outcomes included a primary endpoint (A1C) and secondary endpoints (systolic and diastolic blood pressure and depressive symptoms assessed by the Glasgow Depression Scale adapted for adults with IDD). Mixed-effects regression analysis indicated that group-level change in A1C was not statistically significant at α …

Partners In Death: Introducing An Ethic Of Care To Online Funeral Home Rhetoric, Lindsay Catherine Gagnon

Dissertations and Theses

The funeral industry has become a staple in American death culture over the last century and a half. The professionalization of end-of-life and funeral practices has distanced the average American further from the realities of death, creating a dependent relationship on the funeral home to navigate the complexities of the death process. The experience of grief creates a need for a care that prioritizes the dead and their loved ones. This study calls for an application of care ethics to the rhetoric being promoted by funeral home websites. I first conduct an ideograph analysis of the ideographs and to assess …

Quantifying Modifiable Lifestyle Behaviors And Influences Associated With Preventable Cancers In Selected Rural Counties: A Mixed Method Study, Jecinta Scott

Dissertations and Theses

Cancer is the second leading cause of death in the United States disproportionately affecting rural communities. This dissertation study investigates the involvement of rural communities in lifestyle behaviors associated with increased risk of cancers, the impact of socioeconomic factors, and what influences their behavior and the impact of political party affiliation. The study was conducted using a mixed-method quantitative data analysis enhanced by qualitative interviews. It began with an extensive literature review to identify existing research, and evidence gaps on the topic. Data collection involved retrospective quantitative extraction from the Centers for Disease Control and Prevention’s Behavioral Risk Factor Surveillance …

Unveiling Universal Mental Health Screening: School Psychologists’ Perspectives, Practices, And The Role Of Demographics, Gracie Taylor Hansen

Dissertations and Theses

The critical need to address mental health problems among children, combined with the increasing emphasis on universal mental health screening in school settings, underscores the importance of understanding demographic influences on these measures. This study examined the impact of demographic variables, particularly race and ethnicity, on the use, reliability, and validity of universal mental health screening tools. The Behavior Assessment System for Children, Third Edition Behavioral and Emotional Screening System (BASC-3 BESS) was used to collect screening data. Utilizing a mixed-methods approach, the research comprised two components. First, a survey, developed by the researcher, was administered to school psychologists to …

Perceptions Of Artificial Intelligence Use To Enhance Feedback For Preservice Teachers During Field Experiences, Betsy Schamber

Dissertations and Theses

University supervisors (USs) play a key role in providing feedback for preservice teachers (PSTs). Although artificial intelligence (AI)’s use in providing feedback in educational settings had been explored, its use for feedback for PSTs’ field experience remained unknown. The first case study herein explores PSTs’ perceptions of AI-assisted feedback for field experiences. Findings highlighted PSTs’ perceptions of AI as a catalyst for new idea generation. While AI provided a starting point, the ending output still needed to reflect PSTs’ personalities. Similarly, PSTs valued the human element of feedback, noting how USs’ lived experiences provided an added value. In K–12 classrooms, …

Hypothalamic Paraventricular Nucleus G⍺Q/G⍺S And Rgs2 Signaling Pathways Mediate Sympathoexcitation And Sodium Retention In Hypertension, Shane Harold Boomer

Dissertations and Theses

The hypothalamic paraventricular nucleus (PVN) regulates diverse physiological processes for maintaining homeostasis, modulating functions ranging from fluid balance to sympathetic nervous system activity. Due to its integral connections with various autonomic and endocrine systems, the PVN significantly influences cardiovascular and renal function, notably in blood pressure homeostasis and the development and regulation of hypertension. The regulatory capacity of PVN is mediated through several signaling pathways, including those involving G-protein coupled receptor (GPCR) and G- protein signaling. We hypothesized the altered PVN signaling through Gαq/Gαs and regulators like regulator of G-protein signaling 2 (RGS2) pathways affected sympathetic nerve activity and blood …

Social Anxiety And Cannabis Use Context, Brooke Beckius

Dissertations and Theses

Cannabis use is highly prevalent among young adults in the United States, with many experiencing associated problems. Social anxiety has been identified as a significant risk factor for cannabis use and related consequences; however, it remains unclear whether cannabis facilitates or inhibits social engagement among socially anxious individuals. Solitary cannabis use is consistently linked to use-related problems, but the term “solitary use” may encompass distinct contexts—such as social preparatory use, use to aid sleep, or use while spending time alone. The present study aimed to examine how cannabis use influences social engagement among socially anxious individuals and test how specific …

Saving Tomorrow: The Triumphs And Tribulations Of Innovational Behavioral, Social-Emotional, Or Mental Health Support In A Rural Public School, Andrea Powell

Dissertations and Theses

Although some research has established the use of diffusion of innovation in technical fields, few studies show its utilization in public schools. This qualitative case study aimed to understand the trials and tribulations associated with implementing behavioral, social-emotional, or mental health support in a rural K–12th public school. Further, this study sought to understand how innovation diffuses throughout public school districts. Specifically, this qualitative study analyzed the perception of innovation through survey data collected from teachers and administrators in a rural K–12th grade public school district. When implementing behavioral, social-emotional, or mental health supports in a rural school, five themes …

Upward Distortion And Organizational Culture, Benjamin Gellerman

Dissertations and Theses

The “MUM effect," a social phenomenon in which people prefer to avoid sharing bad news, can cause “upward distortion,” as employees give incomplete information to their supervisors to avoid reprisal. Organizations require upward communication to transmit critical information, and disruptions to this process have implications for both workplace efficiency and job satisfaction. Strauss (2011) developed the Upward Communication Distortion Index (UCDI) to measure the propensity of individuals to distort upward organizational communication. The UCDI was compared with the subscales for LMX (leader-member exchange) and Locus of Control. This project analyzed upward distortion in American businesses, specifically how four different organizational …

Sptiotemporal Changes In Aboveground Biomass, Canopy Cover And Livestock Movements Across Mongolia Grasslands, Abhinav Chandel

Dissertations and Theses

This study presents an integrated geospatial framework for understanding grassland productivity dynamics and livestock movement behavior across the Mongolian steppe. Mongolia’s grasslands constitute one of the world’s largest pastoral ecosystems, yet they face increasing vulnerability due to climate variability, overgrazing, and land degradation. To quantify vegetation change and grazing responses, this research combines multi-decadal remote sensing with high-frequency GPS-based livestock movement tracking. Using Landsat imagery from 1990 to 2023, Aboveground Biomass (AGB) and Canopy Cover (CC) were estimated through Random Forest regression models integrating key spectral vegetation indices (e.g., NDVI, OSAVI, CTVI, TNDVI, IPVI) and climatic predictors such as summer …

The Effects Of A Game-Based Social Skills Intervention On Social Skills Acquistion For Autistic Youth In Training And Generalized Settings, Sales Libby Ann

Dissertations and Theses

Individuals with autism spectrum disorder (ASD) commonly have difficulties with social communication which is often targeted using social skills teaching (SST) (Mikami et al., 2014). These programs are effective, however, many lack evidence of social validity measures or procedures as well as generalization of the skills targeted in intervention. The current study investigated the skill acquisition of three participants through the use of social skills teaching embedded within a role-playing game. The primary dependent variable was the skill acquisition of each participant within the RPG setting. Immediate increases in level and trend were noted across participants for most skills following …

The Impact And Perceptions Of Open Educational Resources And Oer-Enabled Pedagogy On Affordability, Enrollment, And Student Success In Undergraduate Anatomy And Physiology, Justin Burr

Dissertations and Theses

Open educational resources (OER) can help improve the affordability of higher education. While the impacts of OER on student success and cost savings have been studied in some areas, the literature lacks evidence for undergraduate anatomy and physiology. Additionally, the potential impact OER has on student enrollment choices in undergraduate anatomy and physiology remains unstudied. The cost of textbooks has been a notable hurdle to higher education participation and success, particularly among minority and underserved populations. This study aimed to evaluate the impacts of OER on affordability (cost), access (enrollment), and student success. A mixed-methods approach was used to answer …

Personality Functioning And Sexual Aggression: How Criterion A Of The Alternative Model Of Personality Disorders (Ampd) Relates To Sexually Aggressive Cognitions In Men, Ryan Van Fossen

Dissertations and Theses

This study investigated how personality functioning and maladaptive traits contribute to sexually aggressive cognitions (SAC) in men, extending existing research on personality pathology. Three primary aims were examined. Aim 1 explored the relationships between SAC and the four components of personality functioning (identity, self-direction, empathy, intimacy). Aim 2 evaluated the structure of personality functioning as measured by the Levels of Personality Functioning Scale-Self Report (LPFS-SR). Confirmatory factor analyses tested four competing models: unidimensional, two-factor, four-factor, and bifactor. Aim 3 assessed the combined influence of maladaptive traits and personality functioning on SAC. Participants included 469 heterosexual cisgender men, ages 18–24, drawn …

Secondary School Leaders’ Perceptions Of Their Role In Mitigating Cyberbullying, Masey Pechholt

Dissertations and Theses

Cyberbullying is a pervasive issue in secondary schools, posing significant challenges to student well-being and academic success. This phenomenological study explored how school leaders perceived their responsibilities in addressing and preventing cyberbullying within secondary school environments. Grounded in ecological systems theory, the study examined social media technologies and their relation to cyberbullying in schools, cyberbullying and cybervictimization, digital literacy among students, faculty, and parents/guardians, social media exposure and its impact at school, implications for school leaders addressing cyberbullying and both the value and problems of digital literacy. Through in-depth interviews and qualitative analysis, school leaders revealed a shared commitment to …

Least Tern Abundance, Nesting Productivity, And Dispersal Between Nesting And On- And Off-River Foraging Sites In The Missouri National Recreational River, Kyle Jorgensen

Dissertations and Theses

The Interior Least Tern (Sterna antillarum athalassos) has experienced significant conservation success, culminating in its removal from the federal endangered species list in 2021. However, the species remains state-endangered in South Dakota, and knowledge gaps persist regarding its foraging ecology and population dynamics along the Missouri National Recreational River (MNRR). This study aimed to address these gaps by quantifying Least Tern abundance, nesting productivity, and movement patterns between nesting and foraging sites during the 2024 and 2025 breeding seasons. We conducted surveys of Least Terns on riverine sandbars and off-river wetlands within a 30-km radius of the MNRR, employing both …

Mobility-Stress Dynamics: What Audit Scores Can Tell Us About Mobility Patterns And Stress, Mason Hatwan

Dissertations and Theses

This dissertation, leveraging secondary data from the Colorado EMA Project, investigates the dynamic relationships between mobility patterns, stress, and alcohol-related negative consequences among undergraduate college students (N=182, Mage 18.47). Grounded in Dynamic Systems Theory (DST), the study explores daily variations in mobility and stress using a Dynamic Structural Equation Model (DSEM). The analysis aims to understand how these variables interact within and between individuals, focusing on the role of baseline alcohol-related negative consequences as measured by the Alcohol Use Disorders Identification Test (AUDIT). Findings reveal a significant autoregressive effect for stress, indicating that higher stress on one day predicts higher …

A Phenomenological Study Of Hispanic And Latinx Community Mental Health Care Providers, Sara Zare

Dissertations and Theses

Despite experiencing similar rates of mental health disorders, Hispanic/Latinx individuals are less likely than other ethnic/racial groups to access mental health services. There is a growing need for culturally responsive mental health services that address the unique barriers to access and unmet needs faced by Hispanic/Latinx communities. Community mental health organizations are critical to providing care to underserved populations who experience a wide range of resource-related barriers. The representation of bilingual and bicultural Hispanic/Latinx providers within these settings has become invaluable to addressing unique barriers not historically addressed by community mental health organizations. The present study utilized a phenomenological approach …

Body Size Distributions Of Riverine Freshwater Plankton Communities, Staci Ann Reynolds

Dissertations and Theses

The individual size distribution (ISD) is an individual based model that estimates the relative abundance of individual body sizes in a community. ISD’s slope or lambda (λ) gives insight into the communities’ food web and energy transfer. Climate change is expected to shift mean body sizes and λ as it increases individuals’ energy demands. Alterations in food webs and spatial distribution throughout the middle Missouri River basin may also have an impact on these communities λ. In a mesocosm experiment and field study, planktonic communities were sampled and had body sizes measured. Generalized linear mixed models were fit to calculate …

Childhood Betrayal Trauma, Psychopathy, And Ptsd: The Role Of Ambiguity Tolerance, Distress Tolerance, And Impulse Control Difficulties In A College Sample., Surabhi Swaminath

Dissertations and Theses

Childhood betrayal trauma engenders negative outcomes such as post-traumatic stress disorder (PTSD) and psychopathy. Though these outcomes are viewed as functional opposites, this multi-finality suggests similar underlying mechanisms. Childhood betrayal trauma results in low tolerance for different types of distress, including emotional distress and ambiguity. Distress is known to induce impulse control difficulties, which are associated with both PTSD and psychopathy. This cross-sectional study tested hypothesized indirect associations between childhood betrayal trauma and two outcomes: PTSD symptoms and psychopathy in a sample of young adults (N¬ = 753). We hypothesized direct paths from childhood betrayal trauma to PTSD, and psychopathy. …

Hydrogen Peroxide Production From Light-Driven Water Oxidation Via Nickel Oxide-Titanium Dioxide Heteronanocrystals, Mahfuz Ahammed Swadhen

Dissertations and Theses

High dependence on fossil fuels for energy carries risks for the environment, health, energy, and geopolitical stability. One of the solutions to address this is solar energy utilization, and the use of semiconductors for photocatalytic water splitting is a tantalizing prospect. An n-type semiconductor TiO2 combined with p-type NiO producing a heteronanojunction shows effective light-driven oxidation of H2O into H2O2. We developed a synthetic method to attach NiO nanoparticles on the surface of anatase TiO2 nanorods. We characterized the materials with UV-visible spectroscopy, powder X-ray diffraction, and electron microscopy. We immobilized the HNCs on fumed silica and removed organic surfactants …

The Art Of Masking And Performing For The Perfect Marriage In William Shakespeare’S The Taming Of The Shrew, Rita Oliva

Dissertations and Theses

This thesis explores how William Shakespeare’s The Taming of the Shrew exaggerates the art of masking and performing as necessary social techniques for women surviving the patriarchal culture of Padua. Through close analysis of Katherine and Bianca Minola, both sisters adopt performative identities, the “shrew” and the “ideal woman,” that reflect, resist, and expose the restrictive gender norms governing female behavior, qualifications for marriage, and worth. While Bianca’s apparent passivity and rhetorical femininity promote her to manipulate societal expectations to her advantage, Katherine’s refusal to submit to the societal and cultural standards of Padua results in her categorization of a …

Cather, Silko, Hunt: Rethinking Prosperity Twentieth-Century Explorations Of Interiority, Materiality, And Transcendence, Aileen Montoya

Dissertations and Theses

• Interiority
• Materiality
• Transcendence
• Prosperity
• Modernism
• Subjectivity
• Narrative Identity
• Spiritual Landscapes

Eugenol Loaded Calcium Citrate Particle As A Ph Triggered Drug Release System And A Reducing Agent For Au (Iii), Sadia Afrin

Dissertations and Theses

The study demonstrated that eugenol affects the morphology of calcium citrate particles during their formation, as confirmed by SEM micrography and PXRD analysis. Coating of eugenol loaded calcium citrate particles (CaCit MPs) with casein improves their known pH-dependent drug release profile, as confirmed by UV absorption spectroscopy. The casein-coated eugenol-loaded CaCit MPs (CCaCit(eu) MPs) can effectively control and sustain drug release under different pH conditions, particularly at acidic pH values (4.8 and 5.5), which mimics the environment of tumor tissues. To further explore the biomedical applications of calcium citrate, a bulk nanostructured precursor to the known anti-cancer calcium citrate phosphate-based …

Tidal Love Numbers For A Non-Rotating Two-Fluid Neutron Star: Interior Solution, Gregory G Jaurequi

Dissertations and Theses

We investigate the tidal Love numbers for a non-rotating dark matter admixed neutron star (NS). Tidal Love numbers, which quantify a star's response to the tidal field of a companion object, are an important feature in the gravitational wave (GW) signal and vary depending on the star’s equation of state and dark matter profiles. By determining how the internal properties of the NS affect the GW signal, we hope that improvements in gravitational wave detection will help constrain these parameters by providing additional data from neutron star mergers with other compact objects. To this end, we focus on solving the …