Ein Anreizsystem zur kontinuierlichen Mitarbeit wird als Mittel zur Verbesserung der universitären Lehre vorgestellt. Da Missbrauchsmöglichkeiten bestehen, kommen bei der qualitativen Erfolgsanalyse Zweifel auf, ob die Anreize an der richtigen Stelle greifen. Ziel dieser Arbeit ist es, die...

In Pleier und Mangold (2013) wurde ein Pilotprojekt zur Verbesserung des Lernverhaltens untersucht, welches im Wintersemester 2012/2013 durchgeführt wurde. Studierende sollten dabei semesterbegleitend an Online-Tests teilnehmen, um sich frühzeitig auf die abschließende Klausur vorzubereiten....

It is well known that the arithmetic mean of two possibly different copulas forms a copula, again. More general, we focus on the weighted power mean (WPM) of two arbitrary copulas which is not necessary a copula again, as different counterexamples reveal. However, various conditions regarding...

Nonparametric prediction of time series is a viable alternative to parametric prediction, since parametric prediction relies on the correct specification of the process, its order and the distribution of the innovations. Often these are not known and have to be estimated from the data. Another...

We develop a multivariate statistical arbitrage strategy based on vine copulas - a highly flexible instrument for linear and nonlinear multivariate dependence modeling. In an empirical application on the S&P 500, we find statistically and economically significant returns of 9.25 percent p.a. and...

We introduce a new class of Shewhart control charts, namely the phi-chart. This new class is based on the cumulative paired phi-divergence that generalizes both the cumulative (residual) entropy and the differential entropy. The phi-chart contains several subclasses; of which one has as a...

This paper introduces a copula based multivariate rank test for independence extending existing approaches from literature to p dimensions. Then, a multiparametric p-dimensional generalization of the FGM copula is provided that can model the behavior in each vertex of the p-dimensional unit cube...

This paper introduces two new concepts of symmetry for multivariate copulas with a focus on tails regions. Properties of the symmetry concepts are investigated for bivariate copulas and a connection to radial symmetry is established. Two nonparametric testing procedures for the new concepts are...

The problem of selecting a prior distribution when it comes to Bayes estimation often constitutes a choice between conjugate or noninformative priors, since in both cases the resulting posterior Bayes estimator (PBE) can be solved analytically and is therefore easy to calculate. Nevertheless,...