Die vorliegende kumulative Dissertation ist im Rahmen und mit Förderung des DFG-Graduiertenkollegs „Betriebswirtschaftliche Aspekte lose gekoppelter Systeme und Electronic Business“ entstanden. Sie beschäftigt sich mit der Analyse und Prognose des Kaufverhaltens von Kunden im Internet,...

Die Europäische Union hat es sich zum Ziel gemacht, auf eine gute und vor allem effektive Corporate Governance hinzuwirken. Mit dieser Zielsetzung wurde in einer Abänderungsrichtlinie festgelegt, dass kapitalmarktorientierte Unternehmen künftig umfassende Informationen (das sog. Corporate...

Since the publication of Keynes' “General Theory of Employment, Interest, and Money” in 1936 many new ideas and solution concepts for macroeconomic problems emerged, disappeared, and were combined in order to appropriately describe macroeconomic phenomena. Nowadays, New Keynesian frameworks...

I study several policy instruments for carbon mitigation with a focus on subsidies for renewable energies, emission taxes and emission allowances. In Chapter 1, I analyze the optimal design and the welfare implications of two policies consisting of an emission tax for conventional fossil-fuel...

Services Trade has become important in modern economies today, but is hardly investigated in the international economics literature. We provide an empirical firm level analysis of German firms trading producer services. Similarly to trade in Goods, we find that trading firms are quite...

Using legitimacy theory this paper contrasts the values portrayed by public accounting firms via their recruitment practices and society's expectations of the responsibilities of a professional accountant. Society confers on organisations legitimacy when the value system of the organisation is...

This doctoral thesis investigates the influence of overconfidence on the outcomes in experimental asset markets, both on the market and individual levels. Thesis consists of three parts. In the first part an instrument (test) is developed that is later used in economic experiments to measure...

Since the 1990s, the effective global labor supply has increased strongly, in particular due to the integration of China and India into the global markets. This rise has also deteriorated the situation of low-skilled workers in advanced economies. This development raises important challenges for...

This thesis is a collection of research papers examining global economic integration, technology diffusion and climate change and their interactions and policy implications. Chapter 1 theoretically analyzes the effect of changes in regional production costs on the inter-regional allocation of...

This dissertation examines the key prediction of trade models à la Dixit-Stiglitz for the EU-27. Precisely, we test if regional market accessibility determines regional income differences in the enlarged European Union. We propose an empirical strategy that overcomes weaknesses of existing...