PhD Oral Exam - Anthony Noce, Individualized Program

When studying for a doctoral degree (PhD), candidates submit a thesis that provides a critical review of the current state of knowledge of the thesis subject as well as the student’s own contributions to the subject. The distinguishing criterion of doctoral graduate research is a significant and original contribution to knowledge.

Once accepted, the candidate presents the thesis orally. This oral exam is open to the public.

Abstract

This thesis presents an alternative approach to modeling economic growth by constructing a biosphere-energy-technology (BET) model that incorporates energy, technology and entropy as distinct factors that generate transitional competitive equilibriums. The BET model assumes that technological progress is limited by recognized and available energy sources/carriers, named general purpose energy sources (GPESs), and that the recognition of such sources affect choices in technological development. It is the first economic growth model to incorporate the biosphere as a complex dissipative structure, which can experience catastrophic bifurcations. The BET model, which puts strict conditions on the idea that no innovative society need accept Malthusian diminishing returns, predicts that energy and technology are both required for sustained growth given some temporal relationship between them.

The main findings from the BET model are that pervasive technology shocks lead to large increases in consumption, but that technology alone will not sustain economic growth; and, that energy shocks cause permanent labour resource movements from the consumption sector to the energy knowledge sector. Energy shocks in the BET model result in an increase in consumption and utility; however, the effect of a particular energy source that gives rise to the energy shock depends on various parameters that embody institutional factors and policy.

Using hydrogen as a GPES candidate that can give rise to an energy shock, the effects of deuterated molecular hydrogen and deuterated methane on the kinetic rate constants for selected stratospheric radical reactions, including the rate of ozone destruction, were examined computationally. In the case of a tethered hydrogen economy, an increase in deuterated molecular hydrogen in the stratosphere may result in a marked change in the rate at which chlorine radical acts as a sink for H2 and can contribute to decreasing ozone concentrations. However, the kinetic isotope effect results for methane oxidation reactions imply that decreases in polar stratospheric clouds formation and decreased solid HCl are possible with a tethered hydrogen economy resulting in less ozone destruction. In sum, monodeuterated molecular hydrogen and methane may not contribute to appreciable stratospheric ozone loss and may even have a net positive effect.