In this paper we analyse the impact of public R&D on private sector output. It is argued that public research expenditures will increase the input supply in private R&D and accordingly enlarge business sector output. We test the model on danish time series data over period 1973 to 1995.

In this contribution, we examine the interrelation between corporate age structures and firm performance. In particular, we address the issues, whether firms with young rather than older employees are successful and whether firms with homogeneous or heterogeneous workforces are doing well....