EN
The core model represents a highly aggregated system that needs several extensions, mainly in order to illustrate the dependence in creating knowledge capital on specific factors. For this reason several satellite models have been proposed and constructed. Firstly, the models of research and educational sector were built to show the channels the knowledge capital is generated. The technology transfer assuming sector decomposition was separately analysed. On the other hand, the factors affecting the human capital were distinguished and analysed, including demographic variables. The ecological issues were treated separately.