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Three Essays On Urban Transportation, Daniel Amorim Souza Centuriao

Graduate Theses, Dissertations, and Problem Reports (ETD)

Urban environments are shaped by dynamic interactions between infrastructure development, policy interventions, and episodic demand shocks, all of which can generate unintended externalities in the form of motor vehicle collisions, injuries, and fatalities. This dissertation investigates the determinants of traffic safety in dense urban settings, with a particular focus on how different sources of urban activity affect collision risk and severity. Using New York City as a case study and leveraging high-resolution spatial and temporal data, I examine three distinct but interconnected mechanisms: construction activity, traffic safety policies, and large-scale events.

The first chapter analyzes the impact of urban development, …

Economic Development And The Environment, Kelsey Jack, Nicholas Ryan

Discussion Papers

Economic development relies on and transforms the environment. The transformation is evident in the poor environmental quality in many developing countries. For example, air quality in Southeast Asia is three times worse than in the United States, in sub-Saharan Africa four times worse and in South Asia more than six times worse. We model how environmental quality affects health, productivity and well-being and how individuals privately adapt to environmental hazards. We also model how collective action and formal regulation contribute to environmental quality. We draw three main findings from a review of empirical research on these mechanisms. First, individual adaptation …

Skipping The Factory: Service-Led Growth And Structural Transformation In The Developing World, Michael Peters, Youdon Zhang, Fabrizio Zilibotti

Discussion Papers

In today’s developing world, many economies appear to bypass industrialization and transition directly from agriculture to services. The largest rise in service employment has occurred in non-tradable consumer services, such as retail and hospitality, especially in urban areas, where many cities resemble consumer hubs built around local demand. These patterns of growth raise fundamental questions: Can service-led growth sustain improvements in living standards over time? Is service-led growth inherently biased toward affluent urban consumers? What role should policy play? To address these questions, we propose a parsimonious general equilibrium framework that incorporates non-homothetic preferences and locally non-tradable consumer services in …

An Examination Of Remittance Inflow Variation In Net-Emigration Countries, Andrew Rizko

CMC Senior Theses

This paper examines the structural and institutional determinants of remittance inflows in a panel of 40 net-emigration countries from 2000 to 2024. By restricting the sample to countries with negative average net migration, the analysis holds migration pressure constant and isolates the role of domestic conditions in explaining cross-country variation in remittance dependence. Using fixed effects and correlated random effects (Mundlak) estimators, I find that labor force participation is the most robust within-country determinant: a one percentage point increase is associated with approximately a 2.3 percent decline in remittance inflows, consistent with remittances functioning as a structural need in contexts …

Human Capital And Development, Philippe Aghion, Ingvild Almås, Costas Meghir

Discussion Papers

Human capital is central to efforts to promote growth, convergence, and the elimination of poverty. Drawing on the seminal macroeconomic frameworks by Nelson-Phelps, Lucas and subsequent developments, alongside macro and microeconomic evidence, we examine the role of human capital in driving innovation and growth. We highlight how different types of human capital, characterized by education level, matter in different stages of development. Despite documented increases in years of schooling, the world’s poorest regions still see stagnating outcomes in learning and education quality, potentially creating poverty traps where investments in neither physical nor human capital materialize. We discuss obstacles to human …

Envisioning The Role Of Community-Owned Stores & Aligning Federal Food Policies: A Participatory Approach To Food Security And Food Sovereignty In Sambaa K’E, Denendeh (Northwest Territories, Canada), Narayan Subramoniam

Theses and Dissertations (Comprehensive)

Northern Indigenous communities have relied on traditional food systems for meaningful, nutritious diets since time immemorial. But many Indigenous communities in remote northern regions of Canada still face disproportionately elevated levels of food insecurity due to climate change radically altering the availability for traditional foods, colonial food policies imposing Western diets, and the high costs of transporting store-bought foods. Extreme weather events such as wildfires further isolate fly-in remote communities increasing both the costs of transporting store-bought foods and the difficulties of harvesting traditional foods. There are many examples of community-based initiatives for supporting traditional and locally grown foods, however, …

Esg Risk And Agricultural Commodity Integration, Alper Gormus, Yoav Wachsman, Elif Gormus

Finance and Economics

This study investigates how major agricultural commodities interact with diversified U.S. equity funds, sorted by their environmental, social, and governance (ESG) risk exposure. Using daily Morningstar data on 880 U.S. equity mutual funds, we construct portfolios representing high- and low-ESG-risk equities and examine their linkages with prices for eight agricultural commodities. Applying Fourier-augmented Toda–Yamamoto VAR and LM-GARCH models that accommodate both abrupt and gradual structural breaks, we document clear heterogeneity across ESG risk segments. Low-ESG-risk portfolios exhibit minimal price and volatility spillovers from agricultural commodities, whereas high-ESG-risk portfolios display strong and often bidirectional transmissions—particularly for coffee, corn, cotton, livestock, and …

Symmetry, Presumptions, And The Judges Design, Murat C. Mungan

Faculty Scholarship

An instrumental variables approach called ‘the judges design’ used frequently in social sciences relies on an assumption called ‘average monotonicity’. This assumption pertains to how different judges’ (or other classifiers’) decision making processes relate to each other. Violations of it are hard to detect, which raises the importance of it being supported by a plausible theory. Decisions of judges who solve Bayesian decision problems violate average monotonicity as long as the signals they process are symmetric and they do not possess strong presumptions. This result is extended to cases where judge presumptions are symmetrically distributed and may include strong presumptions. …

Examining The Results Of Revolutions In The Third World: A Case Study Of The Iranian, Libyan, And Nicaraguan Revolutions, Noah A. Mohammedelamien

Honors Undergraduate Theses

This thesis examines the post-revolutionary trajectories of Libya, Iran, and Nicaragua to explain why some Third World revolutionary projects preserve and use elements of their founding ideology while others fragment, personalize, or diffuse over time. Rather than focusing on the causes of revolution alone, it analyzes the durability of religious-socialist ideological continuity after revolutionary upheaval. Using a (MDSD) comparative historical and institutional approach grounded in primary and secondary sources, the study evaluates five key dimensions across the cases: religious-socialist ideological fusion, religious elite loyalty, popular religious mobilization, institutional embedding of ideology, and external pressure. The findings suggest ideological continuity is …

Barriers To Immunity: Understanding Covid-19 Vaccine Uptake In Africa, Emilia Blechschmidt

Honors Theses

This thesis examines the factors influencing COVID-19 vaccine uptake across African countries, with a focus on structural, informational, and behavioral barriers to immunization. Drawing on cross-country data, the study analyzes how access to transportation, reliable information, and healthcare resources shape vaccination rates, alongside the effect of demographics and institutional factors in shaping individual perceptions of risk and vaccine safety.

The findings emphasize that the broader strength and preparedness of national health systems strongly influence vaccine uptake. Countries that demonstrated higher coverage of routine childhood immunizations, such as polio and hepatitis B, also tended to perform better in COVID-19 uptake efficiency …

Interpreting Legal Standards Of Proof: An Experimental Study Of Probabilistic Decision-Making, Hayley Leopold

Honors Theses

Legal standards of proof play a central role in structuring decision-making under uncertainty, yet they are typically communicated using qualitative language rather than precise probabilities. This raises an important question: how do individuals interpret and apply these standards when making decisions based on probabilistic evidence? This study examines whether individuals apply legal standards of proof in a manner consistent with their commonly associated probabilistic thresholds, and whether quantification and incentives improve alignment with normative decision-making.

To address these questions, I conducted a controlled behavioral experiment in which participants made legal-style decisions under uncertainty. Participants were assigned roles in a simplified …

Education And The Maternal Childcare Gap: Evidence From The Uk Covid-19 Pandemic, Lara Bakhaya

Honors Theses

This paper examines whether college education shapes working mothers’ access to remote work, flexible working, and childcare hours in the United Kingdom, and whether COVID-19 school closures amplified these inequalities. Using data from the UK Time Use Survey (2016–2021), a repeated cross-sectional diary dataset spanning the pre-pandemic period and five COVID-19 waves, this paper estimates weighted logistic and ordinary least squares regressions on a sample of married or cohabiting, employed mothers. School closures serve as a natural experiment, providing an exogenous shock to caregiving demands that affected all mothers simultaneously regardless of education level. College education significantly predicted working from …

Spillover Effects Of Medicare Advantage On Fee-For-Service Post-Acute Care Spending, Nyel Bangash

Honors Theses

Does the growth of Medicare Advantage reduce fee-for-service post-acute care spending through practice-pattern spillovers, or do observed spending differences primarily reflect favorable selection? Using a county-level panel of roughly 2,700 counties (2014–2023) and a two-way fixed effects specification, I find that a one percentage-point increase in MA penetration is associated with $9.54 less per-capita standardized FFS spending. Spending per episode falls while participation rates remain stable, consistent with practice-pattern spillovers rather than compositional changes from selection. Welfare indicators from County Health Rankings, CDC PLACES, and CMS Care Compare show no evidence that spending reductions harm health or care quality. The …

Mnes Vs. Local Firms’ Resilience To Global Shocks: Evidence From The 2008 Financial Crisis And Covid-19, Yijie Wang

Honors Theses

This thesis examines whether multinational enterprises (MNEs) are more resilient than domestic firms during major global shocks, using the 2008 Financial Crisis and COVID-19 as case studies. Although MNEs may benefit from diversification, internal capital markets, and foreign linkages, they may also face greater exposure to global demand shrinkage and supplychain disruption.

Using Compustat North America firm-level panel data from WRDS, this study analyzes publicly listed U.S. and Canadian firms across 2007–2013 and 2018–2024. Firm resilience is measured through net sales, net income, and gross profit using a two-way fixed effects panel model. Multinational status is identified through two different …

Borderplex Business Barometer, Volume 10, Number 3, Thomas M. Fullerton Jr., Steven L. Fullerton

Border Region Modeling Project

No abstract provided.

The Effect Of The Affordable Care Act Medicaid Expansion On The Risk Of Hospital Closure And Adolescent Hpv Immunization In Rural Counties, Juliette Des Rosiers

Scripps Senior Theses

From 2005 to 2025, over 200 rural hospitals shut their doors, often citing increased operational costs, staffing shortages, low patient volume, regulatory barriers, financial challenges exacerbated by the COVID-19 pandemic, and uncompensated care as common contributors to the closures. Rural patients are often referred by their primary care physician to a hospital for regular immunizations, since smaller clinics have less capacity to provide immunizations due to a shortage of pediatricians and limited vaccine stock. A crucial vaccine that is not required by schools and underutilized in rural areas is that against human papillomavirus (HPV), a virus that infects cutaneous and …

Good Food In The Neighborhood: Localizing Nutritious Food Access, Joseph Pool

Honors Program Theses

Given contemporary changes to federal budget priorities and recent challenges to federal food access funding, this research explores the potential benefits of entrusting state-level and municipal-level policymakers with food access policy. More specifically, this research suggests that “localizing” food access has the unique benefit of not just addressing the affordability of food, but the physical accessibility of it. As observed in the previous literature and expounded upon here, food provisioning requires consideration of nutrition, physical accessibility, and financial affordability. Programs that only address one of these priorities fail to adequately help people receive the food they need. Through policy analysis …

Improving Maternal Health: Investigating The Early Impacts Of Medicaid Coverage Of Doulas In Oregon, Miriam Akhmetshin

Scripps Senior Theses

While the U.S. spends more per-capita than any country on healthcare, we experience the worst maternal health outcomes of high-income nations. In addition to hefty healthcare bills, an overwhelming majority of mothers experience pregnancy-related health issues that decrease productivity and utility. Thus, it is critical to research cost-effective solutions that can improve maternal health and promote equitable outcomes. Doulas are trained non-medical professionals who support mothers and families before, during and after birth. As a growing body of medical literature points to the role of doulas in decreasing costly medical interventions, insurance companies have begun covering their services. In 2014, …

The Impact Of Sports Betting Legalization On Marital Status, Hosea Gitonga Njogu

Theses and Dissertations

This study examines the causal Impact of sports gambling legalization on marital stability in the United States using data from the Current Population Survey Annual Social and Economic Supplement (CPS-ASEC) and the American Community Survey (ACS) from 2013 to 2024. The analysis leverages variation in the staggered adoption of state-level sports gambling laws and applies two-way fixed effects, event-study, and the Callaway and Sant’Anna (2021) difference-in-differences estimators, controlling for geographic and individual characteristics. Legalization increases divorce rates by 0.42 percentage points in the CPS and 0.51 percentage points in the ACS, corresponding to increases of 2.4% and 2.6%, or approximately …

From Touchbacks To Touchdowns: Analyzing The Impact Of The Nfl's New Kickoff Rule Changes, Joshua A. Klatt

Williams Honors College, Honors Research Projects

My proposal analyzes the impact of the NFL's new dynamic kickoff rule changes that were implemented in the Fall of 2024. I use a two-way fixed effects differences-in-differences model using FBS collegiate Division 1 football teams as the control group, and NFL teams as the treatment group. Three of the most important outcome variables I analyze are touchdowns per kickoff return, average yards per kickoff return, and the number of kickoff returns per game.

Expanding State Tax Authority: Public And Private Sector Impacts Of Wayfair, Maxwell Pastoria

Williams Honors College, Honors Research Projects

The 2018 Supreme Court decision in South Dakota v. Wayfair, Inc. (Wayfair) overturned the longstanding physical presence rule for state sales tax collection, enabling states to enforce tax obligations on remote sellers through marketplace facilitator and economic nexus laws (Oyez, 2018). This study investigates the effects of these two post-Wayfair tax laws on state sales tax revenues, entrepreneurship, and public expenditures across all 50 states. Using a two-way fixed effects difference-in-differences (TWFE DID) framework, this research analyzes how policy adoption influenced per-capita outcomes in tax revenue, firm formation, and government spending in social services, education, infrastructure, and …

The First 1000 Days And Beyond: The Process Of Child Development, Orazio Attanasio

Cowles Foundation Discussion Papers

This paper reviews recent developments in the economics of human development, focusing on the early years of life as a critical period for shaping long-term outcomes. Early childhood development is inherently multidimensional: cognitive and socioemotional skills evolve dynamically and interact with health, nutrition, and environmental influences. Economists have contributed to this field by providing a conceptual unifying framework that highlights how key drivers of development reflect the choices of individuals operating under incentives and constraints. Within this framework, the paper emphasizes two central challenges: understanding the interactions among multiple dimensions of development and identifying causal links—particularly the effects of different …

Turning Local Strength Into Regional Change: An Operational Plan For Capacity Building In Virginia’S Tobacco Region, Ellie Plisko

Master of Urban and Regional Planning Capstone Projects

Virginia's Tobacco Region possesses meaningful community assets including committed local leadership, established social networks, and demonstrated resilience, yet many localities consistently struggle to translate those strengths into high-impact economic development projects. The gap is not one of vision or funding, but of organizational capacity: the ability to develop, manage, and implement complex projects over time.

This capstone plan was developed for the Virginia Tobacco Region Revitalization Commission (TRRC) to address that gap directly. Drawing on semi-structured stakeholder interviews, document and case analysis, and comparative institutional assessment, the research identifies the structural, relational, and process-based conditions that distinguish successful projects from …

Borderplex Business Barometer, Volume 10, Number 1, Thomas M. Fullerton Jr., Steven L. Fullerton

Border Region Modeling Project

No abstract provided.

Borderplex Business Barometer, Volume 10, Number 2, Thomas M. Fullerton Jr., Steven L. Fullerton

Border Region Modeling Project

No abstract provided.

Highlights Of The Borderplex Economic Outlook To 2027, Thomas M. Fullerton Jr., Steven L. Fullerton

Border Region Modeling Project

No abstract provided.

Visit Complexity Differs Between Scarring And Nonscarring Alopecia: A 5-Year Dataderm Analysis, Ian Noel Encarnacion, Noelle Desir, Nicholas Schell, Apoorva Mehta, Temitayo Ogunleye, Susan Taylor

Department of Medicine Faculty Publications

[Introduction] Accurate coding is a critical component of dermatologic practice, influencing reimbursement and documentation of clinical complexity. Although alopecia has significant psychosocial and financial burdens, Current Procedural Terminology (CPT) coding patterns in alopecia management remain largely understudied. Our population-level study using the American Academy of Dermatology's DataDerm clinical registry¹ evaluates alopecia CPT coding trends, pre-2021 and post-2021 evaluation and management (E/M) CPT coding updates,² aiming to inform coding practices and visit complexity, which have significant reimbursement implications.

Three Essays In Labor Economics, Yoritsugu Shimazu

Electronic Theses & Dissertations (2024 - present)

The first chapter decomposes aggregate productivity growth into a pure-technology contribution and an allocative-efficiency contribution for Japan and the United States, applying a single estimation methodology symmetrically to comparable firm-level panels. Production functions are estimated by the Gandhi, Navarro, and Rivers (2020) gross-output procedure under monopolistic competition (GNR-MC), which recovers firm-level price markups and wage markdowns, and these enter the Baqaee–Farhi (2020) decomposition through the closed form of Aoki et al. (2024). Both panels are drawn from Compustat with identical pre-processing and estimation, and we close the markup-level identification gap that GNR leave open with a normalization anchored on the …

Essays On Nursing Home Closures And Disparities In Post-Acute And Long-Term Care, Hyeonwoo Do

Electronic Theses & Dissertations (2024 - present)

This dissertation examines the consequences of nursing home closures for access to care, local economic conditions, and resident health in the United States. As the long-term care system shifts toward home- and community-based services and the nursing home sector contracts, facility closures have become an increasingly important policy concern. Although closures may reflect necessary market restructuring in some settings, they may also reduce access, weaken local economies, and place pressure on surviving facilities. Across three essays, this dissertation shows that the consequences of nursing home contraction are uneven and depend on racial and ethnic composition, rurality, local market concentration, and …

The Evolving Beijing Consensus: Chinese Communist Party Political Control And Economic Trade Offs, Ian Murphy

Political Science & Geography Faculty Publications

China’s rapid economic rise and unique development trajectory have long been the subject of scholarly debate, often framed through the concept of the “Beijing Consensus” as an alternative to the Washington Consensus. While initial conceptualizations highlight innovation, sustainability, and national sovereignty, later analyses highlighted elements like state capitalism and authoritarianism, particularly in the wake of the 2008 Global Financial Crisis. This paper argues that the Beijing Consensus is undergoing a significant evolution under Chairman Xi Jinping, increasingly prioritizing the Chinese Communist Party’s political security, regime stability, and ideological control at the expense of economic growth. This marks a notable departure …