We study plurisubharmonic functions and their applications to K\"ahler geometry. We begin by studying regularity of envelopes of plurisubharmonic functions, particularly when the reference form is degenerate. This is then applied to show regularity of geodesic of K\"ahler metrics on singular varieties, as well as regularity of certain geodesic rays....
This dissertation examines how one pervasive state institution¬—schools—shapes the political behavior of young people along the lines of race and ethnicity. I make four primary claims. First, I show that the content of traditional civic education courses privileges the political experiences of white political actors. Second, I argue that this...
The task of classification has been increasingly attracting attention from researchers in recent years. The objective is to assign labels given attributes of samples. The classification task is practical in real-world applications and is widely explored in fields such as computer vision, natural language processing and information retrieval. The recent...
This dissertation investigates a number of models and algorithms in the context of optimization under uncertainty. The focus is on risk-averse optimization, where risk aversion is modeled via stochastic dominance, utility theory, and distributionally robust optimization. We first investigate an investment model with fixed contribution rates, optimize asset-allocation decisions in...
The three dimensional structure of a protein determines its biological function. How a protein folds, however, has been the central research problem for decades. The intermediates on the folding paths, which the protein can assume transiently, are of particular interest as they not only reveal the structural dynamics of a...
The transportation infrastructure privatization is an essential solution to the public fund's shortage of transportation investments. In the privatization practices, the private firms build, operate, and own the transportation infrastructure under a limited term. Due to the private sector's involvement, the efficiency of the transportation service is determined not only...
Raman spectroscopy is an analytical technique that utilizes inelastic scattering of light to obtain structural information of analyte molecules. The weak intrinsic process of Raman scattering, however, can be greatly enhanced when molecules are placed on or near a surface of noble metal with nanostructures. Discovered over 40 years, surface-enhanced...
The recently increasing precision in experimental measurements of observables in collider physics has demanded for a matching precision in the theoretical expectations for such observables. In Quantum ChromoDynamics, the fundamental underlying theory for collider physics, theoretical predictions are expressed under the form of perturbative series, where the expansion parameter is...
Fluid injection is one of the major triggering factors of infrastructure collapse and geo-hazards, among which some of the most recurrent ones are rainfall-induced landslides. Such events exhibit complicated spatiotemporal patterns, spanning from slow deformation to extremely rapid movements influencing large regions. To prevent the occurrence of catastrophic failures and...
In my dissertation, I investigate how formal and informal structures within the board can affect key board outcomes. While each chapter introduces a relatively under-recognized player in the governance space—compensation consultants (Chapter 1), multi-committee directors (Chapter 2), and executive chairmen (Chapter 3)—the main theme connecting all three centers on the...
While the entire silicon industry has been blooming under Moore’s Law for decades, conventional digital implementation is approaching the “stall” of Moore’s Law due to many physical design limitations. Technology innovation now is going to take a different direction. Given the increasing demand for emerging applications' computational capacity, it is...
My dissertation, Geographies of Memory, Trauma, and Pleasure in African American and Caribbean-American Literature examines the geographies of the cane fields, bodies of water, and the back porch to illustrate the speculative ways anti-black violence, intergenerational trauma, pleasure and Black memory co-exist in Black literature. Examining the aforementioned geographies as...
Histories of digital media, software, and computing are inseparable from histories of queer and transgender life. Stored in Memory: Recovering Queer and Transgender Life in Software History situates visual media like video glitch art, the computer’s graphical user interface, video games, and computer operating systems as the product of historical...
Ionizing radiation is known for being dangerous at high doses, beneficial for diagnosis and treatment of diseases, and expensive for hazardous waste disposal and other protection policies governments put in place. Balancing the benefits and risks is key to maximizing public health, reducing public fears, and reducing extraneous costs that...
This dissertation contains three chapters. In Chapter 1, I study the effects of bank leverage ratio restrictions in a general equilibrium model of the macroeconomy where lenders can anticipate bank runs. This framework allows the analysis of the tradeoffs associated with bank capital requirements - while unlimited leverage allows capital...
Employees’ social class backgrounds remain a critical but often overlooked source of inequality in white-collar workplaces: employees from working-class backgrounds are less likely to be hired, less likely to advance to leadership positions, and earn less on average than their counterparts from middle- and upper-class backgrounds, even with the same...
Massive amounts of data with a large number of predictors routinely arrive in data systems as a result of recent developments in data collection technology. In this data-intensive world, predictive models are more important than ever to extract information and make decisions, and are widely applied in many different fields....
Stroke is the leading cause of permanent adult disability. Subcortical unilateral (hemiparetic) stroke affecting the internal capsule or basal ganglia is the most common of all strokes and usually results in hemiparesis of the contralateral arm and leg. About 80% of the individuals with a moderate to severe hemiparetic stroke...
This dissertation investigates two ways in which personality psychology should move beyond the traditional approach of measuring personality with broad domains composed of trait descriptors, as exemplified by the Big Five taxonomy. The first study (Chapter 2) suggests an alternative to the traditional approach of aggregating personality items into domains....
Leptin, a peptide mainly secreted in proportion to adipose tissue mass, increases energy expenditure with a parallel increase in breathing. The existence of a leptin-mediated neural circuit linking breathing to metabolism has been speculated, yet the precise central mechanisms were unknown. In my thesis, I show that optogenetic activation of...