Digital Commons Network^™

Advancing Sampling And Expanding Measurement Of Per- And Polyfluoroalkyl Substances In Natural Waters., Jarod Snook

Open Access Dissertations

Per- and polyfluoroalkyl substances (PFAS) have gained much attention over the last several years in environmental science and engineering communities. They pose a unique challenge: persistent and toxic like several other legacy pollutants, but with additional surfactant and amphiphilic properties increasing the complexity of chemical interactions. Thus, many scientific questions remain regarding the environmental transport, fate, and interactions of PFAS released into natural waters. The dissertation research presented here has focused on several of these questions and knowledge gaps in a vast range of scales - from molecular interactions to global transport of PFAS - all addressing the challenge of …

Characterization Of Methodological Variability In Compound Specific Isotope Analysis Of Amino Acids (Csia-Aa), Audreyana Brown-Nash

Open Access Dissertations

The use of isotopes in the natural sciences stems from the principle that chemical reactions predictably alter the isotopic composition of a given sample. Recent advances in compound specific isotope analysis of amino acids (CSIA-AA) have paved the way for studies of increasingly complex ecological relationships, including the identification and characterization of organismal physiology, consumer-resource linkages, biogeochemical cycling, and movement ecology. The analytical power of CSIA-AA has caused an exponential increase in the number of application-based studies since its inception in the 1990s. With the technique constantly evolving to accommodate new research goals, it is important to understand how variation …

Real-World Clinical And Cost Effectiveness Of Osteoporotic Treatments In Men, Yu Ren

Open Access Dissertations

Osteoporosis is a condition characterized by the loss of bone mass, which increases the risk of fractures. In 2017-2018, the age-adjusted prevalence of osteoporosis among adults aged 50 and over was 12.6%, with 19.6% in women and 4.4% in men. Untreated osteoporosis can lead to a cycle of recurrent fractures that severely impact quality of life and place significant emotional, physical, and financial strain on patients, families, and healthcare resources. Approximately 50% of women and 20% of men will experience at least one fracture in their lifetime. In the United States, an estimated 1.5 million osteoporotic fractures occur each year, …

Essays On Human Decisions Related To Water Quality Problems In The United States, Sonia M. Refulio Coronado

Open Access Dissertations

Water pollution remains a pervasive and inequitable environmental threat in the United States, with mounting evidence that its burdens - whether in recreational or drinking water contexts - are unevenly distributed across communities. Urbanization, aging infrastructure, and industrial contamination have degraded both coastal waters and drinking water systems, posing serious public health and welfare concerns. At the same time, the extent to which water quality influences behavioral decisions, such as beach recreation or household adoption of water filters, remains poorly understood. Although drinking water pollution is widely ranked as a top environmental concern in national surveys, public knowledge of specific …

Consumer And Environmental Preferences: Discrete Choice Experiments And Machine Learning Applications In Ev Battery Adoption And Aquatic Invasive Species Management, Lufan Helen Liu

Open Access Dissertations

As climate change and resource scarcity drive a global shift toward cleaner energy systems and environmental conservation, understanding how individuals value sustainability-related interventions has become increasingly important. This dissertation contributes to this growing body of knowledge by applying and advancing discrete choice experiment (DCE) methodology to assess consumer and public preferences for two key environmental policy domains: (1) repurposed electric vehicle (EV) batteries for residential energy storage and (2) aquatic invasive species (AIS) management in New York State. Across all three chapters, the study examines how traditional econometric models and emerging machine learning (ML) methods can complement each other in …

Will I Go To My Appointment? Case Management And Environmental Drivers Of Missed Transportation In Medicaid, Mark Donald Kraics

Open Access Dissertations

This dissertation examines the behavioral, clinical, and operational drivers of chronic missed appointments within Medicaid non-emergency medical transportation (NEMT) systems. Chronic member no-shows undermine care adherence and introduce operational inefficiencies across Medicaid delivery systems. This two-phased quantitative retrospective cohort study used statewide Rhode Island Medicaid data from 2020 to 2024 to evaluate whether environmental factors (e.g., weather, daylight) influence member missed trips and whether targeted managed care case management interventions reduce no-show rates among high-acuity Medicaid beneficiaries.

Phase I employed a correlational design to assess relationships between monthly environmental conditions and appointment adherence by clinical condition. Results showed no significant …

The Predictive Validity Of Implicit, Explicit, And Subtle Racism Measures On Nonverbal Behavior And Explicit Evaluations Of Black And White Women Interviewers, Adele E. Weaver

Open Access Dissertations

Statement of the Problem: A long-standing history of the oppression of Black Americans has resulted in racism manifesting through White individuals’ nonverbal behavior in interracial interactions’ specifically by way of unfriendly behavioral cues, or on the other end of the spectrum, overly positive and patronizing nonverbal behavior. Regardless of the underlying sentiment, White people’s nonverbal behavior in interracial interactions affect Black people’s mental and physical health and longevity. However, there is a dearth of research on how well-established measures of implicit and explicit racism predict racist nonverbal behavior, and even more so for subtle self-report measures. Methodology: To this …

Incorporating Time-Varying Parameters And Climate Drivers Into Fisheries Models, Rachel Catherine Marshall

Open Access Dissertations

Commercial fishing is a highly valuable industry in the United States and globally, and as such, managing based on the best available science is necessary to maintain important fish stocks. Some parameters in stock assessment models that are assumed to be constant over age and time may actually vary to an extent that stock assessment modeling results could be improved by allowing the parameters to vary in the models. In the present dissertation, two stock assessment parameters that are typically held constant are explored for potential time or age variance. Potential environmental drivers of nonstationary parameters are also explored. Productivity, …

Ischemia-Induced Cytoskeletal And Nuclear Disruptions Drive Neuronal Death And Dysfunction: Insights Into The Connection Between Stroke And Dementia From In Vitro And In Vivo Models Of Stroke, Emily Potts

Open Access Dissertations

Stroke and Alzheimer’s disease and related dementias (ADRD) represent two of the leading causes of neurological disability worldwide, and their prevalence is expected to rise as the global population ages. Although stroke is traditionally viewed as an acute vascular event, a growing body of evidence suggests that transient ischemic injury can trigger lasting cellular disturbances that increase neuronal vulnerability to later neurodegeneration. Understanding how ischemic stress alters neuronal structure and function, and how these changes may overlap with pathways implicated in ADRD, is an emerging focus for stroke and neurodegenerative researchers. This dissertation addresses these questions through an integrated combination …

High School Counselor Perceptions Of Trauma-Informed Professional Development And Implementation Of Trauma-Informed Practices In Schools, Kimberly Faulkner-Camacho

Theses and Dissertations

This non-experimental phenomenological study aimed to delve into school counselors’ perspectives on what motivates them to participate in trauma-informed professional development, the necessary supports for implementing trauma-informed practices in schools (TIPS), and the barriers that impede implementation. Drawing on situated learning theory and adult learning theory, this study sought to enhance the understanding of school counselors’ views on trauma-informed professional development and implementation. These frameworks offered valuable insights into how to support counselors and shed light on existing barriers. The study involved 10 traditional public high school counselors from non-charter schools in Los Angeles County, selected through snowball and purposive …

The Assessment Of Implicit Bias Among Police Personnel: A Systematic Review, Emily Deutsch

Theses and Dissertations

Due to the essential and powerful role police officers play within the communities they serve, systematic racism in law enforcement has become a key topic of public discourse, including increased demand for evidence-based changes in police selection. This includes recommendations or requirements to assess implicit bias in police candidates (e.g., California Assembly Bill 846). Implicit bias refers to the spontaneous/automatic associations or evaluations made of members of a particular group (Kim & Roberson, 2021). The California Commission on Peace Officer Standards and Training’s (POST’s) Bias Assessment Framework provides recommendations to police psychologists on the assessment of implicit bias, but curiously …

Either At The Table Or On The Menu: Strategies For Enabling Practitioner-Led Policy Co-Creation In Education Systems, Robert Reyes

Theses and Dissertations

Demands for educational transformation present unparalleled challenges for practitioners, as successive reform initiatives often exclude their voices and discount their expertise. Despite empirical evidence recognizing educators as key agents of change, systemic barriers continue to hinder their participation in policy-centered decision making. This study underscores the urgent need for education systems to invest in practitioner capacity-building, structural enablement, and cross-sector collaboration to create a more equitable and responsive future for education governance. A qualitative phenomenological approach was employed to explore how best to prepare and enable PK-12 practitioners to co-create education policy at the state level, aiming to empower them …

Implications For Clinical Practice When Working With Latino Families Affected By Pediatric Cancer: An Integrative Systematic Review, Karla Rodas

Theses and Dissertations

The high mortality rates within the Latino population due to childhood cancer and the psychosocial challenges that come with the disease warrants attention from mental health professionals to provide support and address the distress experienced by affected families. The purpose of this integrative systematic review was to identify the psychosocial challenges faced by Latino families navigating childhood cancer, explore the role of cultural resiliency as a coping mechanism, and examine culturally adapted clinical interventions that integrate cultural resilience, promote psychosocial well-being, and improve treatment engagement. A PRISMA flow diagram was used to illustrate the systematic review process, which included 11 …

When Purpose Isn’T Enough: Adapting For-Profit Retention Practices To Support Early-Career Professionals In Youth- Serving Nonprofits, Brittany Erway Soto

Theses and Dissertations

This comparative qualitative study explored how nonprofit and for-profit organizations approach the retention and development of early-career professionals aged 18 to 25. Drawing on Jay Galbraith’s (1995) STAR model of organizational design—encompassing strategy, structure, process, people, and rewards—the study investigated what practices are currently in place and which strategies nonprofits might adopt from for-profit organizations to improve employee engagement and retention. Data were collected through 10 semi-structured interviews with senior leaders from five large, youth-serving nonprofit organizations and five for-profit companies with strong employee retention reputations. The findings revealed six core differences between sectors, with for-profit organizations demonstrating more consistent …

Resilience And Stress: Trauma, Grit, Resilience And Perceived Organizational Support In First Responders, Paige Gallas Parker

Theses and Dissertations

First responders comprise an underserved and under-researched population, despite consensus that their work involves exposure to potentially traumatic events. Inconsistent definitions of “first responder” and unclear prevalence rates of posttraumatic stress symptoms (PTSS) limit efforts to assess and promote resilience. This study examined the relationships between grit, resilience, perceived organizational support, and trauma symptoms in a sample of 234 first responders (69% firefighters, 29% lifeguards) employed by a large West Coast fire department. Measures included a demographics questionnaire, the Professional Exposure to Traumatic Events (PETE), the Posttraumatic Stress Disorder Checklist (PCL-5), the Connor-Davidson Resilience Scale (CD-RISC-10), the Short Grit Scale …

The Role Of Generative Ai In Supply Chain Management: A Comprehensive Study Of Adoption, Usage, Impact And Ethical Implications, Julia Anzano

Theses and Dissertations

This study explores global perspectives of supply chain leaders on the adoption, usage, and impact of generative artificial intelligence (gen AI) in supply chain management (SCM) based on a quantitative analysis of survey responses from 104 industry professionals. It is utilizing the Diffusion of Innovation (DOI) Theory (E. M. Rogers, 2003), Technology-Organization-Environment-Ethics (TOEE) framework—an extension of the Technology-Organization-Environment (TOE) Framework (L. G. Tornatzky & Fleischer, 1990), incorporating ethics—and the Balanced Scorecard (BSC) Framework (Kaplan & Norton, 1996). Findings highlight the key technological, organizational, environmental, and ethical factors influencing adoption and reveal how ethical considerations—such as transparency, accountability, and fairness—shape implementation …

Practitioner Perspectives On Barriers And Opportunities Shaping Contemporary Dei, Carlen Arima

Theses and Dissertations

This study examined the lived experiences of diversity, equity, and inclusion (DEI) practitioners to understand the barriers and opportunities shaping their work in the current landscape. The study identified conditions for success, including two organizational conditions (authentic leadership commitment and strategic business alignment), three practitioner-driven strategies (human resource operations and systemic integration, use of data and metrics, and adaptive framing to increase adoption), and three persistent barriers (leadership support without operational follow-through, funding and time constraints, and structural marginalization of DEI). A central finding revealed that leadership commitment was both the most cited enabler of success and, when lacking operational …

Evaluating The Early Impact Of Ab 617: Air Pollution, Health Disparities, And Environmental Justice In California, Cherry Cheuk Lam Cheung, Adam Eckerd

School of Public Service Faculty Publications

This study evaluates the initial effectiveness of California’s Assembly Bill 617 (AB 617), enacted to address air pollution impacts in communities designated as environmental justice priorities, a policy approach that has recently been touted as a successful start. These claims of initial success stand in contrast to much of the research on remediation of environmental justice, particularly with respect to air pollution. Despite well-documented disparities in air pollution exposure and its health impacts among racial-ethnic minorities, previous policy efforts to mitigate these effects have had, at best, marginal effects. AB 617 mandates local air districts and the California Air Resources …

Uprooted, Olie Espinoza

Humboldt Journal of Social Relations

"I showcase what José Esteban Muñoz (2020) theorizes as “brown commons,” as I am brown and comprised of brown people and things. This piece was also inspired by..."

California Winter, Kamar Alexander Little

Humboldt Journal of Social Relations

"I created this music video reflection with the song “California Winter.” It is a track from the sophomore album of pop artist Dhruv titled Private Blizzard..."

Patent Infringement In Time, John R. Thomas

Georgetown Law Faculty Publications and Other Works

No patent lasts forever. When intellectual property rights expire, a canonical principle states, all benefits of their ownership cease. But patents may cast a long shadow after they are gone, hindering the advent of immediate competition upon their expiration. The law acts unevenly in these circumstances, leading to questionable intellectual property and public health policies. Ordinarily competitors cannot make and use a patented invention until the patent's term has concluded. This delay ordinarily extends the effective period of exclusivity that the patentee enjoys. However, a statutory safe harbor shields from infringement acts undertaken "solely for uses reasonably related" to Food …

I Hate Self-Care: A Criminal Defense Lawyer’S Lament, Abbe Smith

Georgetown Law Faculty Publications and Other Works

Don’t get me wrong—I think people should take care of themselves. They should eat well, exercise regularly, and get a good night’s sleep. They should spend time with friends and family. They should have hobbies and interests. With any luck, they should find true love. But in the past decade or two, and especially since the COVID pandemic, there has been a disturbing turn inward. I’m talking about the “self-care” craze, which has become its own pandemic, or at least epidemic.

…

In this Essay, I share my concerns about what I regard to be an excessive focus on self-care …

Understanding Disputes Over Digitalization: A Perspective Of Cross-Border Central Bank Digital Currencies, Heng Wang

Emory International Law Review

In a rapidly digitalizing world, complex disputes arise due to technological, regulatory, and other complexities. Public and private actors—including central banks, financial institutions, tech firms, and law firms—need to understand the complexity of these disputes before determining whether and how to engage with ongoing digitalization.

Given the fundamental role of currency in the world economy, this article examines central bank digital currency (CBDC) as a pivotal case study. CBDCs, representing the digitalization of central bank money, are a novel digital form of national currency issued by central banks. Various central banks, including those of the Eurozone, Switzerland, the United …

Research Report: Cold-Hardy Hydrangeas For Landscape And Cut Flowers, Rebecca G. Sideman, Kaitlyn Orde, Ella Lukacz, Cathy Neal

Faculty Publications

This research report describes the performance of several cold-hard “panicle” (H. paniculata), “smooth” (H. arborescens), and “oakleaf” (H. quercifolia) hydrangea as landscape plants and for cut flower production in Durham, NH. We established a replicated planting of sixteen newer hydrangea cultivars at Woodman Farm in summer 2020. Preliminary data from these young shrubs indicates that there are wide differences in flower production, stem quality, flowering time and duration, and postharvest floral quality – among other traits.

Orchestrating Digital Technologies With Incumbent Enterprise Systems For Attaining Innovation, Sachithra Lokuge, Darshana D. Sedera, Varun Grover, Suprateek Sarker

Information Systems Faculty Publications and Presentations

In the late 1990s, most organizations adopted enterprise systems (ES) to automate their core business processes. The very same organizations are presented with a new wave of opportunities to innovate with digital technologies—technologies that purport to have diametrically opposed characteristics to ES. This study explores how organizations integrate digital technologies with their incumbent ES for attaining innovation. The study followed a qualitative approach and gathered data from four organizations consisting of six such projects. By applying a unique theoretical foundation, this study derives interesting insights into the orchestration process of ES and digital technologies for attaining innovation.

Using Geographic Interviews To Conduct Community Assessments—Insights For Msw Pedagogy, Danielle Maude Littman, Denae J. Cook, Amie Thurber

School of Social Work Faculty Publications and Presentations

Social work is predicated as a person-in-environment profession, but few tools presently exist for students to operationalize person-in-environment through assessment and systematic understanding. Geographic interviews, which combine spatial mapping and qualitative go-along interviews, are one possible tool with promise for application in the social work classroom. This teaching note describes the process of integrating geographic interviews as one data collection method MSW students could utilize in a community assessment assignment. We share learnings from student assignments (N = 8) and instructor focus groups (N = 4). We found that while there was a high level of student and instructor interest, …

Pozen And The Puzzle Of Counterfactuals, Louis Michael Seidman

Georgetown Law Faculty Publications and Other Works

The Constitution and the War on Drugs, David Pozen’s carefully researched and brilliantly argued book, is both illuminating and disturbing: illuminating because it unearths forgotten moments when judicially formulated constitutional doctrine that could have ended or sharply restricted the War on Drugs were well within the Overton Window, and disturbing because it surfaces hard questions about historical contingency and the scope of the change that might have occurred in a counterfactual world. In this review, the author argues that the failure to specify both the nature of the counterfactual and the breadth of the alternative possibility have confused discussions …

The Matryoshka Doll Prior – Principled Multiplicity Correction In Bayesian Model Comparison, Andrew Womack, Daniel Taylor-Rodríguez, Claudio Fuentes

Mathematics and Statistics Faculty Publications and Presentations

This paper introduces a general and principled construction of model space priors with a focus on regression problems. The proposed formulation regards each model as a “local” null hypothesis whose alternatives are the set of models that nest it. Assuming constant ratio of prior probabilities for any “local” null and its alternatives provides a natural isomorphism of model spaces (like a matryoshka doll), constituting an intuitive way to correct for multiplicity in Bayesian model selection and averaging problems. This isomorphism yields the Poisson distribution as the unique limiting distribution over model dimension under mild assumptions. We compare this model space …

Recontextualizing Engagement With Data Visualizations In The Context Of The Socio-Ecological, Eva Thanheiser, Laurie Rubel, Beth Herbel-Eisenmann, Courtney Koestler

Mathematics and Statistics Faculty Publications and Presentations

We explore how data visualizations (DVs) are representational tools that can be used to narrate certain aspects of a context but silence others. Using multiple DVs allows for contrasting the DVs and likely provides opportunities for critical reading and exploring the entanglement of political and ecological dimensions of an issue. We start by integrating two sets of practices, Notice, Wonder, Feel, Act and Reimagine (NW-FAR) (Kahn, et al., 2022) and critical graph reading, Framing, Formatting, Narrating (FFN) (Rubel, et al., 2021) towards taking a socio-political stance and supporting students to read data visualizations and develop critical data literacy. We look …

The Forms Of Representation: How To Be A Kantian Realist, Willem A. Devries

Faculty Publications

Sellars argued that Kant did not make certain distinctions concerning space and time, and because of this adopted his transcendental idealism. Once these distinctions are made, the path to realism remains open. Sellars' argument is not entirely clear. This essay attempts to clarify the argument, showing why Sellars believed he could remain a scientific realist while also adopting a Kantian style epistemology.