We provide a method for distinguishing long-range dependence from deterministic trends such as structural breaks. The method is based on the comparison of standard log-periodogram regression estimation of the memory parameter with its tapered counterpart. The difference of these estimators...

From a banking supervisory perspective, this paper analyses aspects of market risk of an aggregated trading portfolio comprised of the trading books of 11 German banks with a regulatory approved internal market risk model. Based on real, clean profit and loss data and Value-at-Risk estimates of...

From a banking supervisory perspective, this paper analyses aspects of market risk of an aggregated trading portfolio comprised of the trading books of 11 German banks with a regulatory approved internal market risk model. Based on real, clean profit and loss data and Value-at-Risk estimates of...

We propose semi-parametric CUSUM tests to detect a change point in the covariance structure of non-linear multivariate models with dynamically evolving volatilities and correlations. The asymptotic distributions of the proposed statistics are derived under mild conditions. We discuss the...

Testing for asymmetric informations has become very important in recent years in order to test theoretical predictions and to outline new directions for research. In this paper we analyse accident insurance, which has not been analysed before in the literature, but covers one of the most...

Although the number of graduates with a bachelor's degree has risen over recent years, little information is available as to which position such persons hold within an establishment and whether they compete on the career ladder with persons from the vocational sector with advanced further...

In this paper, we use a modified concept of Granger-(non)causality in reconsidering the negative correlation between stock returns and inflation known in the literature as stock return-inflation puzzle. Based on the quarterly data for Germany including stock returns, inflation rates and growth...

Die vorliegende Arbeit befaßt sich mit den Effekten beruflicher Weiterbildung auf die Entlassungswahrscheinlichkeit und die Wahrscheinlichkeit eigenmotivierter Kündigungen westdeutscher Arbeitnehmer. Als Datengrundlage dient das Sozio-oekonomische Panel (SOEP) 1984-1999. Zur Berücksichtigung...

The phenomenon of private contributions to public goods is broadly discussed in the literature. However, the possibility to verify theoretical results empirically is often limited because sufficient data on donors is lacking. Christmas lights in Berlin have been completely financed with private...

The demand for certain types of health care services depends on decisions of both the individual and the health care provider. This paper studies the conditions under which it is possible to separately identify the parameters driving the two decision processes using only count data on the total...