My philosophical case study concerns textbook presentations of the theory of demand. Does this theory contain anything more than just a collection of tautologies? In order to determine its empirical content, it must be viewed holistically. But then, the theory implies false factual claims. We...

This dissertation consists of three stand-alone research papers, all of which treat the topic of estimation and dynamic modelling of multivariate volatility by employing the information contained in high-frequency data, which became available in the last 10 - 15 years. The main focus of all...

This dissertation introduces three novel approaches for the econometric evaluation of heterogeneous treatment effects. The proposed methods consider the effects of a binary treatment on different characteristics of the outcome distribution.Section 1 proposes an estimation method for various...

The main focus of this work is theanalysis of price direction processes at transaction level ofdifferent stocks traded at the NYSE. Three different models havebeen applied to the data, namely the autoregressive conditionalmultinomial model, a probit model with latent ARMA-process anddifferent...

In recent years high-frequency finance has become one of the most active research fields in finance and economics. The wide-spread availability of high-frequency datasets has particularly spurred research within this field and has, in turn, given birth to the rapidly expanding bridge between...

This dissertation is comprised of three essays on nonparametric Bayesian modeling in microeconometrics. The introduction discusses some basic concepts of Bayesian nonparametrics including the Dirichlet process and the mixture of Dirichlet processes model. Further, the literature on estimating...

The development of a feasible and flexible model for the intraday transaction process is an ongoing topic in the empirical analysis of market microstructure. This work attempts to modify and extend the models of the transaction process suggested by Rydberg and Shephard (1998) and Russell and...

Das deutsche Hochschulsystem befindet sich zur Zeit in einerstarken Umstrukturierungsphase. Dabei ist neben der Einführung derMaster- und Bachelorstudiengängen die Einführung vonStudiengebühren eine der einschneidendsten Politikmaßnahmen, diein Deutschland im tertiären Bildungsbereich...

In recent years a substantial amount of literature in one way or another deals with liquidity. The interest in it grows beyond the walls of the academia, as the security exchanges recognize the importance of the concept and plan to adopt unique measures of liquidity and publish them in the...

Diese Diplomarbeit widmet sich aus theoretischer und empirischer Sicht dem Thema der regionalen Konvergenz in der EU. sie stellt zunächst verschiedene Konzepte sowie Ergebnisse der Konvergenzanalyse vor und vergleicht diese kritisch. Das Hauptergebnis ist ein Nebeneinander von Persistenz bzw....