Doctor of Philosophy

Die vorliegende Dissertation besteht aus fünf unabhängigen Forschungspapieren über optimale Steuer- und Bildungspolitik, welche ich während meines Promotionsstudiums an der Universität Konstanz erstellt habe. Private Versicherungen gegen Einkommensrisiko können aufgrund von moral hazard...

We develop an overlapping generations model with retradeable paper assets and capital accumulation to analyze the interaction between the real economy and an international asset market. The world consists of two homogeneous countries, which differ only in their initial levels of capital. Two...

The aim of this paper is to investigate the spillover effects through an endogenous world interest rate on the inequality of nations. The model of K. Matsuyama (Econometrica 72 (2004)) is explored under the alternative assumption that the world economy consists of two countries, instead of a...

In this paper we develop a spatial Cournot trade model with two unequally sized countries, using the geographical interpretation of the Hotelling line. We analyze the trade and welfare effects of international trade between these two countries. The welfare analysis indicates that in this...

This paper extends an economic geography model by tariffs to analyze their impact on welfare and sustainability of agglomerations. Policies with and without cooperation are compared, with the goal of maximizing aggregated welfare in the former and regional welfare in the latter case. The main...

This paper examines the problem of optimal tax mix analytically in a two-sector growth model with transitional dynamics. Tax revenue is required to provide a pure public good. The key problems are: over-consumption of leisure under labor income or consumption taxes; and under-investment in human...

Following Chamley, Lucas, Laitner, and Aiyagari, this dissertation continues toexplore the answer for the question of zero capital taxation by discussing how taxeson capital income, labor income, and property affect the economy in the contextof a vintage capital model where the embodied...

Diese Doktorarbeit besteht aus vier eigenständigen Forschungsarbeiten, die in der Zeit von Oktober 2004 bis Oktober 2007 geschrieben wurden, während ich Teilnehmer am "Doctoral Programme in Quantitative Economics and Finance" an der Universität Konstanz war. Meine Forschungsinteressen...