We extend an earlier model of innovation dynamics based on invasive percolation by adding endogenous R&D search by … the log-normal distribution are varied, the relative rates of aggregate innovation switches between the two regimes. The … SO regime has higher innovation rates, other things being equal, for lower means or higher standard deviations of the …

between appropriability mechanisms, innovation and firm-level productivity. We enrich this model in several ways. First, we … consider different types of innovation spending and study the differences in estimates when innovation spending rather than RD … spending is used to predict innovation in the CDM model. Second, we assume that a firm simultaneously innovates and chooses …

productivity of firms and the existence ofpossible complementarities between these different forms of innovation. …

, Research and Development, Financial Constraints, Innovation Policy …

an innovation survey conducted in the Netherlands have been used to evaluate the effect on firm growth in the five years …