Dimensionally constrained material systems are at the forefront of current materials research because of their novel and often enhanced physical, chemical and biological properties. The dimensionality effects are pervasive through different classes of materials including ceramics, metals and polymers. Often times dimensionality effects are manifested as internal structure variations in...
This study explored the mentoring experiences of doctoral students in science, technology, engineering, and mathematics (STEM) doctoral degree programs at Northwestern University. Research suggests that mentoring relationships support student success in STEM disciplines, and further, that lack of mentorship may be a barrier for female students. A mixed-methods approach employing...
The first chapter of this dissertation investigates the pricing of systematic variance risk in the equity options market. Cross sectional tests on synthetic variance swap returns reveal no evidence of a negative market variance risk premium. Furthermore, we show that a class of linear factor models cannot simultaneously explain index...
Encouraging honest behavior and discouraging deceptive behavior has become a very important issue with respect to ethics and moral behavior in the workplace. As such, a critical practical and theoretical goal has been to directly study the likelihood of individuals punishing deception and rewarding honesty. The growing assumption within the...
This dissertation examines the development of a black theater aesthetic in Jamaica as the colony prepared for independence. I define my theory of myalisation to explain how middle class theatre audiences participated in the Afro-Jamaican religious rituals of the lower class and how their participation signaled the development of a...
Okilactomycin and chrolactomycin are antitumor antibiotics isolated in 1987 and 2001, respectively. These tetracyclic natural products possess a unique 6-5 fused tetrahydropyrone-butyrolactone. The spirocenter is part of a highly functionalized cyclohexene ring, which together with the aforementioned 6-5 system compose the core of these molecules. A six carbon, 1,3-dialkyl-substituted carbon...
This dissertation develops dynamic models to examine markets with product differentiation where both firm conduct and consumer behavior is jointly influenced by switching costs, network effects and technological innovation. In Chapter 1 I propose a structural model of competition where firms set prices, introduce new products and scrap obsolete models....
Metal oxide surfaces are generally recognized as active substrates for many catalytic reactions. Density Functional Theory (DFT) has been found as a useful computational tool to investigate the geometry, energy, electronic structure of reactive oxide surfaces and their interaction with small molecules and fragments. In this thesis, primary efforts have...
Cluster Analysis deals with classifying a sample of multivariate measurements into different categories. In this dissertation we study the effect of the correlation structure of the data on the performance of a clustering method. We begin with the analysis of two-component normal mixture models and then proceed to cluster analysis...
Gradient copolymers are novel materials that possess a gradual variation in composition along the chain, thereby forming an intermediate structure between random and block copolymers. As such, they are a model system to investigate the effect of molecular structure on fundamental properties of copolymers and may be useful in many...