Wir analysieren die Determinanten der Zuschauernachfrage in der Fußballbundesliga in den Saisonen 2001/02 bis 2004/05, d.h. für insgesamt 1224 Spiele. Dafür spezifizieren wir ein ökonometrisches Modell, das die begrenzte Kapazität der Stadien und Heteroskedastizität berücksichtigt. Es...

The real options investment theory shows that greater uncertainty about market revenues reduces current R&D investment by increasing the value of waiting. This paper presents empirical evidence that patent protection mitigates the effect market uncertainty on R&D investment.

The literature suggests that public research and development (R&D) subsidies may reduce market failures affecting private R&D investment caused by incomplete appropriability of knowledge and financial constraints due capital market imperfections. Drawing on the theory of investment under...

Input technological change, fundamental to rural transformation, sometimes bypasses some rural populations because farmers are often reluctant to use new inputs due to production and price risks that could render their use unprofitable. The level of wealth of the household significantly relates...

This paper gives an account of the recent literature on estimating models for panel count data. Specifically, the treatment of unobserved individual heterogeneity that is correlated with the explanatory variables and the presence of explanatory variables that are not strictly exogenous are...