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Fads models for stocks under asymmetric information in a purely continuous(GBM) market were first studied by P. Guasoni (2006), where optimal portfolios and maximum expected logarithmic utilities, including asymptotic utilities for the informed and uninformed investors, were presented. We generalized this theory to Lâevy markets, where stock prices and the process modeling the fads are allowed to include a jump component, in addition to the usual continuous component. We employ the methods of stochastic calculus and optimization to obtain analogous results to those obtained in the purely continuous market. We approximate optimal portfolios and utilities using the instantaneous centralized and quasi-centralized moments of the stocks percentage returns. We also link the random portfolios of the investors, under asymmetric information to the purely deterministic optimal portfolio, under symmetric information.

Cone snails are predatory marine gastropods that use venom for means of predation and defense. This venom is a complex mixture of conopeptides that selectivity binds to ion channels and receptors, giving them a wide range of potential pharmaceutical applications. Conus brunneus is a wide spread Eastern Pacific cone snail species that preys upon worms (vermivorous). Vermivorous cone snails have developed very specific biochemical strategies for the immobilization of their prey and their venom has not been extensively studied to date. The main objective of this dissertation is the characterization of novel conopeptides isolated from Conus brunneus. Chapter 1 is an introduction and background on cone snails and conopeptides. Chapter 2 details the isolation and characterization of a novel P-superfamily conotoxin. Chapter 3 presents the 3D solution structure of the novel P-superfamily conotoxin. Chapter 4 details the isolation and characterization of two novel M-superfamily conotoxins. Chapter 5 covers the use of nano-NMR to characterize a novel P-superfamily conotoxin using nanomole quantities of sample. Chapter 6 is a reprint of a paper published in the Journal of the American Chemical Society in which we combined and implemented techniques developed in the previous chapters to report the presence of D-(Sd(B-Hydroxyvaline in a polypeptide chain. This dissertation contains the first reported work of a P-superfamily structure obtained directly from the crude venom therefore accurately representing native post-translational modifications. In this paper, crude cone snail venom was characterized by: high performance liquid chromatography, nuclear magnetic resonance spectroscopy, nanonuclear magnetic resonance spectroscopy, mass spectrometry, amino acid analysis, Edman degradation sequencing, and preliminary bioassays.

A progressive discourse on race is impeded by several factors: debates on the reality or unreality of the term race itself; discussions of ethnicity that tend to marginalize a discussion of race; the view by majority members of society that race is a topic for discussion principally by minorities; and the lack of models for non-confrontational public conversations on the subject. In the process, a discussion of racial change rarely enters the discourse beyond brief responses in opinion polls. This study proposed the Race and Change Dialogue Model to facilitate the exploration of how race operates in society on an interpersonal level in everyday lives of people across cultures and how changes in racial attitudes occur over time. Theories of race and ethnicity, language, effective communication strategies, and social change provided a starting point, but a "re-languaging" approach was used to advance the innovative nature of this work. In audiorecorded oral histories for public dissemination and interviews in a documentary series on public television, cross-cultural narrators were provided with a safe rhetorical space to tell their stories and to be heard, and a framework of "racenicity" allowed for the discussion of the intersectionality of race, ethnicity, class, and culture as fused aspects of the same issue. An environment was created that enhanced effective communication of a difficult subject. Despite the challenges that arose in the patterns of talk about racial change, the door has been opened to bring change into the dialogue in a more prominent way that moves the discourse on differences in more productive directions. An alternate model for public discussions on race as "racenicity" was created that has the potential to build coalition in the U.S. and has implications for other societies as well.