Historical examples (ISDN, Teletex, telefax, telex) show us that forecasting efforts in the telecommunication sector can go awry - not only by a few percentage points but by large magnitudes. We maintain that with strong network effects it is not possible to forecast the success of...

Veröffentlichungen zu den Themen: Umweltproduktivität, Umweltnutzung der privaten Haushalte, Material- und Energieflüsse, Flächennutzung, Umweltschutzmaßnahmen, Verkehr und Umwelt, Landwirtschaft und Umwelt, Waldgesamtrechnung, UGR und Nachhaltigkeit.

In this paper we want to discuss macroscopic and microscopicproperties of financial markets. By analyzing quantitatively a database consisting of 13 minute per minute recorded financial time series, we identify some macroscopic statistical properties of the corresponding markets, with a special...

In semiparametric models it is a common approach to under-smooth the nonparametric functions inorder that estimators of the finite dimensional parameters can achieve root-n consistency. The requirementof under-smoothing may result as we show from inefficient estimation methods or technical...

Seit ihrer Erkenntnis und Formulierung im Rahmen der Ausarbeitung derThermodynamik zeigte sich, dass der Geltungsbereich der sog. Hauptsätzeweit über die Grenzen der Thermodynamik im engeren Sinne herausreicht –sie sind offenbar das Fundament aller materiellen Prozesse. Unverständlichbleibt...

In this paper we provide a review of copula theory with applications to finance. We illustrate the idea on the bivariate framework and discuss the simple, elliptical and Archimedean classes of copulae. Since the copulae model the dependency structure between random variables, next we explain the...

Let (X1, Y1), . . ., (Xn, Yn) be i.i.d. rvs and let l(x) be the unknownp-quantile regression curve of Y on X. A quantile-smootherln(x) is a localised, nonlinear estimator of l(x). The strong uniformconsistency rate is established under general conditions. In many applicationsit is necessary to...

This book is the third volume of the Handbook of Computational Statisticsand covers the field of Data Visualization. In line with the companion volumes,it contains a collection of chapters by experts in the field to present readerswith an up-to-date and comprehensive overview of the state of the...

Multilevel models are widely used in education and social science research. However, theeffects of omitting levels of the hierarchy on the variance decomposition and the clusteringeffects have not been well documented...

Das Arbeitspapier behandelt die verschiedenen Möglichkeiten zur Optionspreisbestimmung. Es beginnt mit einer Abhandlung der theoretischen Grundlagen und stellt danach unterschiedliche Modelle dar, bspw. Black-Scholes-Modell; Cox-Ross-Rubinstein-Modell usw.