In this dissertation new test statistics for the (panel) unit root hypothesis are presented. Besides a novel approach to testing the unit root hypothesis in univariate time series, the major part of this thesis is dedicated to unit root testing in cross sectionally dependent panels with...

Empirical study of causality between inflation, inflation uncertainty and other macroeconomicy quantities. Additionally, the issue of how to measure the unobservable inflation uncertainty is addressed.

Effizienzbeurteilung von Hochschulen -- Internationaler Forschungsstand der Effizienzbeurteilung mittels Data Envelopment Analysis -- Konstruktion eines mathematischen Modells für die mehrstufige und mehrperiodige Effizienzbeurteilung von Hochschulen -- Implementierung des mathematischen...