My dissertation research is composed of two parts: a theoretical part on semiparametric efficient estimation and an applied part in energy economics under different dynamic settings. The essays are related in terms of their applications as well as the way in which models are constructed and...

In the first chapter, we consider the logistic regression model with an integrated regressor. In particular, we derive the limit distributions of the nonlinear least squares (NLS) estimators and their t-ratios. It is shown that the NLS estimators are generally not efficient. Moreover, the...

This study provides an overview of the Neoclassical theory of production as well as topics on market structure. It analyzes transportation costs, pricing, and economies of scale that determine production concentration and emphasizes the need of studies that would analyze possible effects if a...

Heckman and Singer (1984) argued that in typical longitudinal analyses, standard treatments of heterogeneity components result in incorrect parameterization of the duration model. As a consequence, estimation bias is not limited to duration dependence, but extends to the structural parameters as...