My dissertation consists of empirical and theoretical essays on Microeconomic Theory and International Economics. The first chapter discusses the existence and characterization of a model that determines producer's optimal pricing and allocation rule as a preannounced markdown schedule. The mechanism focuses on pricing and operational implications of allotting scarce resources when customers are heterogeneous in their valuations and sensitivities towards availability of product. The proposed mechanism suggests that a carefully designed multistep markdown pricing could achieve optimal revenue when selling a single unit. However, to sell multiple units, monopolist should modify the implementation of markdown pricing by either hiding the number of available products or selling them via contingent contracts and upfront payments. In the second essay, we study the heterogeneity of finance and growth nexus across countries. Our paper contributes to the literature by investigating whether this impact differs across regions and types of economy. Using a rich dataset, cross-section and dynamic panel estimation results suggest that the beneficial effect of financial deepening on economic growth in fact displays measurable heterogeneity; it is generally smaller in oil exporting countries; in certain regions, such as the Middle East and North Africa (MENA); and in lower-income countries. Further analysis suggests that these differences might be driven by regulatory/supervisory characteristics and related to differing performance on financial access for a given level of depth. The third chapter analyzes contraction of exports in the aftermath of severe financial crises and tests for its heterogeneity across different industries and based on their credit conditions. It provides a theoretical framework to provide insight on why sectors are hit disproportionately during and in the aftermath of severe financial distresses, and confirms most of them with empirical estimations. The findings suggest that industries with greater reliance on outside financing and fewer shares of tangible assets experience greater contractions in export volumes in the years following a severe financial crisis. / text

The main objective of this study was to test if the applicability of known capital structure theories holds water in abnormal economic environments, in particular, in Zimbabwe. Using secondary data collected for listed manufacturing firms from 2009-2018, results from a fixed effects regression model concluded that profitability, company size, non-debt tax shields, firm liquidity, inflation and GDP were significant in explaining capital structure decisions in Zimbabwe. In the context of South Africa, company size, asset tangibility, firm liquidity and inflation were found to be significant. The pecking order and trade-off theories were the only two theories that were found to be applicable in the Zimbabwean context, and the application of both theories indicated the use of internally generated funds as opposed to external finance sources, such as debt and equity. These results attribute to the abnormality and instability of the Zimbabwean economy, especially with regards to limited access to capital. / Business Management / M. Com. (Business Management)