The impacts of international collaboration on research performance have been extensively explored in the last two decades. Most research, however, focuses on quantity and citation-based indicators. Utilizing the turnover of keywords, this study develops an integrative approach tracking and visualizing the shift of the research stream and tests it within the context of U.S.-China collaboration in nanotechnology. Continue reading Tracing the footprint of knowledge spillover: Evidence from U.S.-China Collaboration in Nanotechnology →