Die Arbeit umfaßt die Darstellung und Anwendung von Regressionsmodellen für Zähldaten, deren abhängige Variable nur nichtnegative ganzzahlige Werte annehmen kann. Die Spezifikationen des Poisson- und des NegBin 2-Modells mit den zugehörigen Schätzverfahren und Beurteilungskriterien werden...

Despite a number of significant advances in count data modeling during the last two decades and the growing popularity of these models in recreation demand analysis, standard count data models are inadequate to address the fast decay process of the dependent variable and the associated long...

This paper analyzes the link between the diffusion of information- and communication technology (ICT) and both the skill structure and employment expectations of the different skill categories. The analysis is based on cross-sectional data for 4150 German firms conducted in mid-2000. The...