Digital Commons Network^™

Developing A Rapid Urban Forest Assessment System For Sustainable City Greenification, Daniel Gonzalez

Master's Theses

This thesis presents the Rapid Urban Forest Assessment (RUFA) system, a web-based platform that integrates urban tree inventories and aerial tree detection to assess forest health across California’s census-designated places. RUFA combines inventoried tree records with coordinates detected from high-resolution multispectral imagery using convolutional neural networks, then computes a composite RUFA Score from four metrics: canopy cover percentage, trees per capita, tree diversity (TD-50), and tree evenness. The thesis addresses two engineering challenges in building the dashboard: querying and aggregating over seven million tree records in real time, and rendering spatial summaries at multiple zoom levels without recomputing cluster assignments …

Evolution Of Propagator Wakes On The Kolbeinsey Ridge From An Integrated Geophysical Perspective, Ethan Stowell

Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research

Oceanic lithosphere is formed following the extension and rifting of a continent, with new material generated at mid-ocean ridges. While ridges generally spread in the direction of extension, individual spreading centers are offset by perpendicular transform faults that break the ridges into individual segments. Ridge propagation, in which one ridge segment grows at the expense of another’s shortening, has been identified in global investigations as a poorly understood component of axial reorganization. This process leaves propagator wake structures composed of faults and pseudofaults visible as lows in Earth’s gravitational field, and transferred lithosphere with a distorted magnetic signature. This study …

A Novel Edge-Based Accuracy Assessment Framework For Target Detection From Remotely Sensed Images, Yingfan Zhang, Weiyi Hou, Lyndon Estes, Rui Lu, Shijie Zhu, Aiyin Zhang, Zhou Shi, Su Ye

Geography

Accuracy assessment is critical for evaluating map quality and improving algorithms for target detection in remotely sensed images. Traditional methods for assessing a target-detection task were often performed by estimating the relative pixels of correct and incorrect identifications (e.g., F1 score). However, this approach only considers the pixel-by-pixel agreement and ignores important aspects of positional errors and target object quality. To provide comprehensive diagnostic information, we propose a novel edge-based accuracy assessment framework. This framework firstly applied a newly proposed assessment tool, Dynamic Epsilon-band Accuracy Function (DEAF), which is a linear fitting function from a series of edge accuracies associated …

Rural And Urban Availability Of Substance Use Treatment Facilities, Aaron P. Smith, Tyrone F. Borders

Rural & Underserved Health Research Center Publications

Overview of Key Findings

• Rural counties have higher per capita numbers of substance use disorder treatment facilities than urban counties on average, but also greater variability and large pockets of unmet need.

• The highest proportions of residents living in counties without any treatment facilities are concentrated in rural areas within the Midwestern and Southern United States.

• Rural and urban treatment facilities offer medications for opioid use disorder (MOUD) at similar rates, with inpatient facilities most likely to provide MOUD, followed by residential and outpatient settings.

Co-Creating The Garden With The Soil, Water, Plants, And Bees: Unsettling Gardening With A Different Axiology And Epistemology, Kathleen Cameron

Social Justice and Community Engagement Major Research Papers

No abstract provided.

Neoliberalism And The Crisis Of Hope: How Capitalist Culture Constrains The Aspirations Of Low-Income And Racialized Youth In Canada, Andrew Okingo

Social Justice and Community Engagement Major Research Papers

This Major Research Paper examines how neoliberalism shapes the aspirations, self-perceptions and imagined futures of low-income and racialized youth in Canada. Drawing on Critical Political Economy, Postcolonial Theory, Critical Race Theory, and Intersectionality, the study uses a qualitative semi-systematic literature review and an autoethnographic lens to critically examine how neoliberal ideologies influence young people’s experiences. The findings suggest that neoliberalism not only produces material conditions of economic and social precarity but also individualizes structural inequality, encouraging youth to interpret systemic barriers as personal failures. These processes can constrain aspirations and contribute to an erosion of hope when pathways toward desired …

Hyperadhesive Von Willebrand Factor Contributes To Pathogenesis Of Preeclampsia, Yajuan Wang, Chenyu Wang, Katie L Houck, Xiaoli Gao, Yuanyuan Chen, Xin Xu, Xue Zhao, Miguel A Cruz, Shu Zhang, Chester Q Li, Fengxia Xue, Min Li, Swati Shree, Jing-Fei Dong, Cha Han

Children’s Nutrition Research Center Staff Publications

Background: Preeclampsia is the most common complication of pregnancy, significantly affecting maternal and fetal health, and is characterized by placental and systemic endotheliopathy. Patients with preeclampsia have elevated levels of VWF (von Willebrand Factor), which is associated with poor clinical outcomes. However, whether VWF serves as a marker for endotheliopathy or contributes to the pathogenesis of preeclampsia remains poorly understood.

Methods: We investigated the role of hyperadhesive VWF in the development of preeclampsia by studying patients, evaluating mouse models, and performing in vitro experiments.

Results: We show that patients develop VWF- and fibrin-rich thrombosis in the placenta and have significantly …

All-Cause And Cause-Specific Mortality In Gambling Disorder: Evidence From A Nation-Wide Matched And Sibling Cohort Study In Taiwan, Yang-Chieh Brian Chen, Chih-Wei Hsu, Liang-Jen Wang, Mu-Hong Chen, Yao-Hsu Yang, Chih-Sung Liang, Edward Chia-Cheng Lai

Children’s Nutrition Research Center Staff Publications

Background and aims: Gambling disorder (GD) has been linked to suicidal ideation and suicide deaths; however, evidence on all-cause and cause-specific mortality-particularly in Asian populations-remains limited. Using a retrospective cohort study based on nationwide matched and sibling cohort, we investigated all-cause and cause-specific mortality risk in patients with GD.

Design, setting and participants: A retrospective cohort study was conducted using 2000-2022 data from Taiwan's National Health Insurance Research Database. A cohort of 961 individuals diagnosed with GD was identified. An age- and sex-matched control cohort (n = 3,844) and an unaffected sibling cohort (n = 675) were constructed. Cumulative survival …

Optimal Management Of Electric Vehicle Fast Charging Stations Via Lyapunov Optimization And Reinforcement Learning, Mohammad Hossein Abbasi

All Dissertations

The transportation sector is responsible for 28% of global energy-related emissions, with road transport accounting for most of these emissions. While electric vehicles (EVs) are essential for decarbonizing transportation, widespread adoption depends on fast, efficient charging. Fast charging reduces charging time but accelerates battery degradation, whereas slow charging increases range anxiety. In addition, fast charging stations (FCSs) impose significant stress on distribution grids, making their operation a critical challenge. Optimizing FCS operation can conflict with EV fast-charging objectives, yet existing research largely treats these problems independently despite their strong interdependence.

Current fast-charging methods focus on individual cells or small battery …

A Surface-Bound Detection Architecture For Label-Free Evanescent-Wave Sensing Of Cobalt In Complex Fluids, Jeremiah W. Carpenter

All Dissertations

Cobalt exposure is a clinical concern in orthopedic implant surveillance, where cobalt-chromium wear debris can release ions detectable in blood and urine, and an environmental concern in mining-affected and industrial water systems. Reference laboratory methods, including inductively coupled plasma mass spectrometry, provide sensitive quantification but require centralized instrumentation, trained personnel, and controlled sample handling, which limits their availability for routine screening in decentralized clinical and environmental contexts. This dissertation develops a surface-bound detection architecture for label-free evanescent-wave sensing of cobalt in complex fluids. The architecture rests on a physical necessity argument grounded in interfacial optics: at physiologically and environmentally relevant …

Theory-Informed Generative Agents For Human Behavioral Modeling In Disasters, Liming Lu

All Dissertations

This dissertation develops a theory-informed generative-agent framework for modeling human behavioral decisions in disasters. Existing flood and disaster preparedness models often emphasize physical hazards, infrastructure exposure, or statistical correlations, but they struggle to capture the heterogeneous and evolving choices households make. This limitation is especially important for climate-related hazards, where future damage depends not only on changes in rainfall, inundation, and urban development, but also on decentralized protective actions such as house elevation, flood insurance, evacuation, and early preparedness. The dissertation integrates two empirical studies: a flood-risk study in Charleston, South Carolina, and a household disaster-preparedness study across hurricane contexts. …

Use Of A Task Analysis Application With Video-Prompting To Increase Social Skills For Individuals With Moderate To Severe Intellectual Disabilities, Zachary Hurley

All Dissertations

Individuals with intellectual and developmental disabilities present deficits in both intellectual functioning and adaptive behavior, which can limit an individual’s ability to function independently. Given the different levels of intellectual functioning and adaptive skills, individuals with moderate intellectual disabilities require a level of support in daily situations and environments. However, individuals with severe to profound intellectual disabilities require the most extensive amount of support in daily skills. Research demonstrates that the use of video-based instruction is an effective tool in increasing social skills among individuals with intellectual disabilities. Additionally, conclusions derived from the current review of literature identified gaps in …

Leveraging Deep Learning Recurrence And Attention Mechanisms For Flood Forecasting And Assessment, Elnaz Heidari

All Dissertations

Predicting how much water will flow in rivers and streams is important for managing floods, water supply, and the environment. Traditionally, government agencies have used complex models, such as the National Water Model (NWM), which simulate how much water moves through landscapes using physical laws and real-world data. However, recent advances in Artificial Intelligence (AI) have enabled new ways to make these predictions. This research explored whether AI-based models could predict river discharge more accurately. These AI models learn patterns from past data instead of relying only on physical rules. To find out how well they work, the AI models …

An Investigation Of The Use Of Self-Regulated Strategy Development With A Mnemonic On The Fraction Computation Performance Of Students At-Risk For Emotional/Behavioral Disorders, Melissa D. Hullett

All Dissertations

Interventions that help students organize their thinking can reduce cognitive load and support academic, behavioral, and social success. Self-Regulated Strategy Development (SRSD) is an evidence-based instructional framework that combines strategy instruction with self-regulation to promote student independence and improve student confidence. A mnemonic has been shown to help scaffold support across all content areas to the level of mastery required by Stage 4 of the SRSD framework ("Memorize It"). In mathematics, where executive functioning demands are high, interventions to scaffold content must provide the metacognitive support needed for a diverse student population. This study used a multiple-baseline design to examine …

Integrated Power, Energy, And Thermal Management For Autonomous Hybrid Off-Road Vehicles: Multi-Timescale Modeling, Predictive Control, And Resilient Thermal Design, Anirudh Sundar

All Dissertations

Electrification and autonomy are increasingly important for off-road vehicles operating in construction, agriculture, mining, defense, and other demanding environments. These platforms must deliver high tractive power under unstructured terrain, harsh ambient conditions, low-speed operation, and large auxiliary loads. While hybrid and electrified powertrains offer improved efficiency, mobility, and auxiliary power capability, they also introduce significant challenges in managing tightly coupled power, energy, and thermal subsystems. In particular, lithium-ion batteries, power electronics, electric machines, and internal combustion engine-generator systems operate across different temperature limits and timescales, requiring coordinated management to ensure efficiency, durability, and safe operation. This dissertation develops modeling, planning, …

Toward A Conceptual And Methodological Understanding Of Supervisor Gaslighting In The Workplace, Gabriela Peschiera

All Dissertations

The term ‘gaslight’ has infiltrated popular media, with articles, TV shows, and podcasts dedicated to identifying gaslighting behaviors and mitigating its effects. Despite the term’s popularity, much of the existing literature solely focuses on gaslighting in intimate partner relationships, medical settings, and political campaigns. As a result, little is known about how it operates in the workplace context and whether it is distinct from other well-established workplace mistreatment constructs. In this dissertation, I explored the mechanisms of supervisor gaslighting by developing a scale and testing its distinctiveness from other workplace mistreatment and positive workplace behaviors. While two scales were recently …

Speakin’ Southern: A Phenomenological Exploration Of The Lived Experiences Of College Students With A Southern Dialect, Michael J. Farmer

All Dissertations

Southern dialects are often stereotyped, and southern speakers are often negatively perceived.  The prejudice they may face is perpetuated by Standard Language Ideology (SLI) in which linguistic discrimination is intentionally or unintentionally perpetuated through power structures. While scholarship exists regarding southern dialectal speakers facing SLI in settings such as K-12 classrooms, the workforce, and dialectally unique communities, research into southern dialectal college students navigating the power structure of higher education is sparse. What research does exist in this space often utilizes a mixture of quantitative and qualitative methods to track linguistic variables in light of these experiences. This dissertation, however, …

Strategic Ties That Bind: How Founder Identity Shapes Enduring Imprints Across The Firm And Community, Michelle Gras

All Dissertations

This dissertation examines how founder identity creates long-lasting imprints on organizations and the communities in which they operate by researching a historical case study in the U.S. textile industry.  This research responded to calls in the imprinting literature for greater attention to secondhand imprinting mechanisms, multiple sensitive periods, and durability of founder influence over time (Marquis & Tilcsik, 2013; Marquis & Qiao, 2025) and draws upon the theoretical lenses of founder identity theory (Fauchart & Gruber, 2011) and organizational imprinting theory (Stinchcombe, 1965; Marquis & Tilcsik, 2013).  The findings suggest that founder identity persistence is not solely a consequence of …

Towards Scalable And Trustworthy Machine Learning For Future Ai Systems, Gen Li

All Dissertations

No abstract provided.

Investigating The Impacts Of Information Framing And Representation On Multi-Stakeholder Decision-Making For Tradespace Exploration, Meredith G. Sutton

All Dissertations

Tradespace exploration (TSE) is a decision-making process used in engineering design to search through a tradespace, containing all potential solutions to a design problem and their performance evaluations, in order to select optimal or near-optimal solutions. Solution optimality is driven by a desire to maximize the overall utility of a solution, which often cannot be done without making tradeoffs or compromises. The TSE process requires vast amounts of information which can be difficult to generate and understand, often leading to challenges including information overload, delays in decision-making, and suboptimal decisions, even for the most experienced designers. To address the challenges …

Bridging Models And Real-World Performance: Capturing Represented, Hidden, And Unrepresented Dynamics In Complex Systems, Dixizi Liu

All Dissertations

Complex systems often depend on adaptive performance that is difficult to capture using structured data or formal models alone. This dissertation asks how predictive modeling, coordination-cost measurement, and simulation can be integrated to better represent the visible, hidden, and unrepresented dynamics that shape real-world system performance.

Sterile Processing Departments (SPDs) provide the empirical context for this work because they support safe and timely surgical care while operating under high workload variability, time pressure, and tight coordination with operating rooms. Hospitals rely on SPDs to clean, assemble, sterilize, and deliver surgical instrument trays so surgeries can start on time and proceed …

Essays On Reputation And Feedback System In Digital Markets, Huiyu Yang

All Dissertations

Online review systems play an increasingly important role in reducing information frictions in digital markets. This dissertation studies three aspects of these systems, including sellers' incentives to manipulate reviews, the design of rating systems, and how horizontally differentiated negative reviews affect consumer demand. The first chapter investigates key drivers influencing online sellers' decisions to invest in fake reviews. I first construct a model in which sellers strategically invest in fake reviews to influence consumers, who form beliefs about product quality based on observed reviews. I then empirically test the model's predictions on the main determinants of fake review prevalence using …

Essays On Gender Reforms, Education, And Child Marriage In India, Pratistha Adhikari

All Dissertations

This dissertation comprises three chapters that examine the effects of gender reforms on education and child marriage in India.

In Chapter 1, I estimate the causal effect of the Hindu Succession Act Amendment of 2005, which granted Hindu women equal inheritance rights to certain household assets, on their education. I use the National Family and Health Survey (NFHS-5) data from 2019–2021 and a difference-in- differences design that exploits variation across religions and women’s ages at the time of the reform. The reform increased the likelihood of completing Grade 12 by 7 percentage points for Hindu girls in rural areas. The …

Silviculture For Coastal Forest Resilience: Promoting Forest Regeneration And Managing Invasive Plant Species, Ryan Bohannon

All Dissertations

Coastal forests of the southern United States and the ecosystem services they provide are threatened by an intensifying and interacting suite of disturbances associated with global change. Silvicultural strategies such as enrichment planting, invasive plant management, and browse mitigation treatments can enhance the resilience and adaptive capacity of forests to these threats by promoting sustainable regeneration and recruitment dynamics. To improve our understanding of coastal forest disturbance regimes and their impacts on forest stand dynamics, I conducted a systematic literature review of maritime forest disturbance ecology and identified coastal storms, ungulate browsing pressure, and invasive plants as primary disturbances shaping …

Beyond Going Green: A Multilevel Examination Of Sustainability Climate Formation, Meredith Pool

All Dissertations

Going green at the organizational level does not automatically produce a shared sustainability climate among employees. How individual perceptions of organizational sustainability support form, and under what signal conditions they converge, has been theorized but rarely tested experimentally. The present study examined these questions using a 2 × 2 × 2 between-subjects factorial vignette experiment (N = 332) with full-time employed adults, manipulating organizational sustainability signal strength (strong vs. weak), team-level sustainability signal strength (strong vs. weak), and team functional context (operations vs. analytics). Two large main effects emerged. Organizational signal strength produced a large effect on Perceived Organizational Sustainability …

Regional Forecasting Of Southern Pine Beetle Outbreaks In The Southeastern Usa Using Spbom1 With Artificial Intelligence-Based Modeling, Ebere L. Anozie

All Dissertations

Southern pine beetle (SPB; Dendroctonus frontalis) outbreaks are among the most damaging biological disturbances affecting pine forests of the southeastern United States, capable of causing extensive tree mortality, economic losses, and reduced ecosystem resilience. This dissertation evaluated and advanced predictive approaches for SPB outbreak forecasting by integrating systematic review, geospatial modeling, comparative model evaluation, and artificial intelligence-based prediction. First, a systematic review of SPB predictive tools from 1978 to 2024 showed that modeling has evolved from statistical, climatic, and mechanistic approaches to remote sensing, GIS, machine learning, hybrid modeling, and decision-support systems, although many tools remain limited by scale …

Equity In Healthcare: Exploring The Viability Of Reparations As A Means To Address Racial Health Inequities, Invest In The Community, And Bestow Reconciliation For African Americans, Alesia A. Smith

All Dissertations

Racial health inequities remain among the most persistent forms of health disparity in the United States, despite decades of policy efforts to eliminate them. African Americans, in particular, continue to experience disproportionately poor health outcomes rooted in generations of institutional racism and in inequities in the social determinants of health, income, wealth, education, housing, and access to care, disparities that the COVID-19 pandemic further exposed and intensified. These enduring, structurally produced harms strengthen the case for reparative investment as a potential intervention.

The purpose of this qualitative study was to examine whether reparations, framed as a community-based investment in health, …

The Rhetoric Of Flattery: Embodiment And Persuasion In Papal Discourse, Gabrielle Wilkosz

All Dissertations

What makes flattery so persuasive? An analysis of three speeches from contemporary popes, preeminent leaders in the Catholic Church, finds strategic use of compliments, emotional language, and ideas about human dignity. These approaches can persuade world leaders and institutions such as the United Nations and the United States Congress to act morally and responsibly. Flattery can encourage ethical action and reduce the feeling of emergency, creating an enduring, complex dynamic of power that is seen at many levels of narrative.

Rhetorics Of The Lost Cause Myth And Its Lingering Hegemony In The South, Frances Chapman

All Dissertations

The Lost Cause of the Confederacy is a myth that is steeped in the consciousness of many white Southerners. For about one hundred years, it was taught in public schools in the South using curricula devised by the United Daughters of the Confederacy with the goal of keeping the Confederate cause alive and visible. The myth dates back to the end of the Civil War in 1865. Basically, it says that the Civil War was not fought about slavery but about states’ rights, and that the South’s cause was just. It believes wholeheartedly in white supremacy.

Generations of people have …

Essays On Opioid Prescription Limit Policy Diffusion, Evaluation, And Opioid Use Disorder Treatment Utilization, Md Ashiqur Rab

All Dissertations

The drivers of the opioid epidemic in the United States include the oversupply of prescription opioids, the availability of illicit drugs, under-resourced healthcare settings, and several socio-economic factors. Federal and state-level initiatives, including policy interventions to curb the oversupply of prescription opioids, providing access to healthcare, prevention and recovery support services, and community-level engagement, have been adopted to combat the opioid epidemic. Motivated by the need to better understand the policy and recovery efforts to address the epidemic, this dissertation examines opioid prescription limit policy diffusion, evaluation, and treatment utilization patterns. This dissertation comprises three manuscripts that offer a comprehensive …