Past activities:

• From 2000 to 2014, editor and publisher of the Mathematical Physics Electronic Journal (MPEJ). This was a refereed, completely electronic journal, on Mathematical Physics. Anybody with access to the Internet can access the full journal or just the abstracts for free.
• Organizer of i-Math DocCourse: Computational Methods in Dynamical Systems and Applications, IMUB, Barcelona, September 27 to December 22, 2010.
• Organizer of a Workshop on Stability and Instability in Mechanical Systems: Applications and Numerical Tools, IMUB, Barcelona, December 1-5, 2008.
• Organizer of an Advanced Course on Specific Algebraic Manipulators, IMUB, Barcelona, September 12-15, 2007.
• Organizer of an Advanced Course on Long Time Integrations, IMUB, Barcelona, September 3-7, 2007.
• Organizer of an Advanced Course on Numerical Linear Algebra, IMUB, Barcelona, July 2-6, 2007.
• Organizer of a Workshop on Patterns: Models and Applications, IMUB, Barcelona, November 19-20, 2007.
• Organizer of a Workshop on Strange Nonchaotic Attractors, Barcelona, March 27-29, 2006.
• Jornada sobre Matemáticas y Análisis de Misiones Espaciales, Barcelona, 7 de Junio de 2005.
• Organizer of the Summer School Nonlinear Phenomena in Computational Chemical Physics, to be held in Barcelona, June 9-14, 2003.
• Chairman of the Departament de Matemàtica Aplicada i Anàlisi, in the Universitat de Barcelona, from Feb. 1998 to March 2001.

• Collaborator in the organization of the 3rd European Congress of Mathematics, held in Barcelona, Jul 10-14, 2000.
• Vice-chairman of the Departament de Matemática Aplicada I, in the Universitat Politècnica de Catalunya, from Nov 1, 1994 until Feb 28, 1997.
• Member of the organizing comitte of the  XIV CEDYA / IV CMA. (1995).
• Jointly with G. Gómez, J. Masdemont and C. Simó, I've been involved in two research projects with the European Space Agency (from 1990 till 1993). The two final reports for these projects were classified until very recently, and now they have been reprinted by World Scientific (see the  books section).