Am 28. Oktober 2011 wurde in Berlin der 8. Familienbericht an die Bundesministerin für Familie, Senioren, Frauen und Jugend übergeben. Er beschäftigt sich mit dem Thema »Zeit für Familie« und mit den Notwendigkeiten und Möglichkeiten einer Familienzeitpolitik. Für die Erstellung des...

Am 28. Oktober 2011 wurde in Berlin der 8. Familienbericht an die Bundesministerin für Familie, Senioren, Frauen und Jugend übergeben. Er beschäftigt sich mit dem Thema »Zeit für Familie« und mit den Notwendigkeiten und Möglichkeiten einer Familienzeitpolitik. Für die Erstellung des...

The decomposition of a given time series into trend, seasonal component, and irregular component is formulated as a minimization problem. The trend is chosen such that it is as smooth as possible; the seasonal component is chosen such that it exhibits a seasonal pattern as stable as possible; and...

The aim of this paper is to develop a model-based seasonal adjustment method which will yield the same decomposition formulas as the descriptive seasonal adjustment procedures proposed in Schlicht/Pauly (1984) and Schlicht (1981). Hence the duality between the descriptive and the model-based...

The seasonal adjustment method proposed by Schlicht (1981) can be viewed as a method that minimizes non-stochastic deviations (perturbations). This interpretation gives rise to a critique of the seasonality criterion used there. A new seasonality criterion is proposed that avoids these...

We review the continuous{time literature on the so{called direct approach to bond option pricing. Going back to Ball and Torous (1983), this approach models bond price processes directly (i.e. without reference to interest rates or state variable processes) and applies methods that Black and...

The paper discusses a new seasonality hypothesis which is one part of a weighted regression approach for the decomposition of a time series into a trend, a seasonal component and an irregular component. It is shown that there exists a regression formulation leading, as in the descriptive...