1. Competence Center Policy and Society, Fraunhofer Institute for Systems and Innovation Research (ISI), 76133 Karlsruhe, Germany
2. Knowledge, Technology and Innovation Group, Wageningen University, Wageningen 6706 KN, the Netherlands
3. Departamento de Economía Agraria, Facultad de Ciencias Agrarias, Universidad de Talca, Casilla 747-721, Talca, Chile
4. Facultad de Agronomía, Universidad Nacional Agraria, Managua 11037, Nicaragua
5. Strategic Communication Group, Wageningen University, Wageningen 6706 KN, the Netherlands