the chronological time variable, or the speed of knowledge accumulation along time, neglecting the nature of the … considerable simplification in literature by deriving, by construction, a measure of dynamic gains of knowledge following the … interplay of stock of scientific and technological knowledge and the flow of effort in R&D. This scheme is then applied to study …

exchanges among firms within a local innovation system. Each conceivable shape for the knowledge transfer relationship among … learning process in the presence of knowledge spillovers. We hypothesize two different functional specifications of spillover …