destruction leading to the obsolescence of existing technologies. We quantify the innovation gains from collaborations, and show … the interplay between knowledge diffusion and network formation can give rise to a cyclical pattern in the collaboration … large R&D collaboration network over the years 1985 to 2011. We then study the efficient network structure, compare it to …

efficient network maximizing social welfare, and find that the efficient graph is either empty, complete or shows a strong core … counterfactual analyses, taking into account that the network and production can dynamically adjust to shocks or policy interventions ….6%. Our study further reveals that when ignoring the network structure the impact of firm exit or mergers is significantly …

characteristics of China's PV technology innovation network, this study uses China's patent PV technology data over the past 20 years … enterprises have basically formed relatively stable internal collaborations and that the scale of innovation network development … dominant; 3) provinces participating in PV technology innovation are increasing significantly, the network is more influenced …

coevolution of market and network structure matter for the relationship between competition and innovation. Moreover, our model … both, the network of R&D collaborations as well as the market structure, are endogenously determined. We show that the … allows us to explain differences in the R&D network structures observed across different industries, and how they are related …

belonged to the exiting key player's ego-network, indicating that the group level provides a source of stability and …

in R&D partnerships. We first examine the efficiency of a given network structure in terms of the maximization of total … profits in the industry. We show that the efficient network structure depends on the marginal cost of collaboration. When the … marginal cost is low, the complete graph is efficient. However, a high marginal cost implies that the efficient network is …