Abstract Es wird gezeigt, dass die Befragung zum DGB-Index „Gute Arbeit“ Ergebnisse liefert, die mit denen der BIBB/BAuA-Erwerbstätigenbefragung grundsätzlich vergleichbar sind. Trotz ähnlicher Konzeption und teils sehr ähnlicher Fragestellungen weisen die Analysen allerdings darauf hin,...

A non-stationary regression model for financial returns is examined theoretically in this paper. Volatility dynamics are modelled both exogenously and deterministic, captured by a nonparametric curve estimation on equidistant centered returns. We prove consistency and asymptotic normality of a...

A non-stationary regression model for financial returns is examined theoretically in this paper. Volatility dynamics are modelled both exogenously and deterministic, captured by a nonparametric curve estimation on equidistant centered returns. We prove consistency and asymptotic normality of a...

Summary In the aftermath of Germany’s reunification, redesigning their product range was a major challenge for East-German enterprises. At the same time, there were growing signs that Western enterprises reacted to globalization and European integration by increasingly pursuing strategies of...