Recent developments have enabled L12-strengthened Co-based superalloys, which have thepotential to surpass Ni-based superalloys as the material of choice for the hottest sections of turbine
blades due to cobalt’s 40 ºC higher melting point. The most-studied branch of Co-based
superalloys are based on the L12 phase Co3(Al,W); however, there is...
Caught between world wars and Stalin’s consolidation of power, citizens of Soviet Russia of the 1920s and 1930s had little to laugh about. Yet a unique tendency toward disruptive humor surfaces in poetry and prose over these two decades. I explore disruptive humor in select longer poetry of Nikolai Zabolotsky,...
This dissertation consists of three chapters about education policies in developing countries. The first chapter examines two extrapolation approaches to make out-of-sample predictions using cash transfer experiments in Malawi and Morocco. The second chapter evaluates India's workfare program in terms of targeting efficiency and effects on school enrollment, in comparison...
We present both semiclassical asymptotics for the wave equation on a stationary Kaluza-Klein spacetime and an index theorem describing the difference of the positive-frequency
spectral projectors for two stationary regions in a globally hyperbolic spacetime. The
first result involves analyzing the restrictions of the wave trace to isotypic subspaces for...
This dissertation focuses on two topics in international macroeconomics: the identification of the international spillovers of US interest rate shocks, and the study of its main transmission channels. In Chapter 1, I present the Spillover Puzzle of US Monetary Policy - the fact that in response to a US interest...
Chapter 1 investigates asks the question how do financial frictions affect the type of human capital investments that students make in college? To study this question, I build a novel dataset covering more than 700,000 U.S. students, merging commencement records with address histories, credit bureau records, and professional resumes. I...
From daily hygiene habits, such as brushing teeth, to the ingestion of pharmaceuticals, many forms of healthcare are commonly practiced in daily life, at home. How have household healthcare practices changed over time in urban America? Taking Washington, DC as my case study, I examine patterns of household pharmaceuticals access...
This dissertation aims to understand how Black Chicagoans work with institutions and neighbors they distrust to pursue common policy goals – in this case, to remedy state and community violence. I introduce the theory of distrustful cooperation. Using three Chicago neighborhoods as cased studies: Greater Englewood, Bronzeville, and Calumet Heights,...
Motor abnormalities (e.g., dyskinesia, psychomotor slowing, neurological soft signs) are core features of schizophrenia observed from the premorbid period through chronic illness, suggesting motor dysfunction may reflect the pathophysiology of psychosis. Among this list of motor abnormalities, psychomotor slowing in particular is one of the most consistently observed and robust...
Atomistic methods offer a powerful set of tools in the study of materials systems, as they allow materials scientists to ask questions with a high degree of specificity. They are well suited for studying and designing energy materials, critical due to the climate crisis, in part due to their ability...