Michael A. Rappa

• A comparative study of the development of two chemical technologies
• An analysis of entry and persistence among scientists in an emerging field
• Assessing technological progress using hazard rate models of R&D communities
• Bandwagons, bootlegging and grapevines
• Beyond persistence--understanding the commitment of pioneers in emerging fields of science and technology
• Bootleggers and bandwagoners
• International survey of the neural network research community
• Monitoring progress in R&D communities
• Obstacles to systemic innovation
• Technological communities and the diffusion of knowledge
• Technological progress and the duration of contribution spans
• The dynamics of R&D communities