Dr. Bernard P. Zeigler is Emeritus Professor and Co-Director of the Arizona Center for Integrative Modeling and Simulation (ACIMS), at the University of Arizona, Tucson, USA. He is also Chief Scientist at RTSync, Rockville, MD, USA.
Dr. Hessam S. Sarjoughian is Associate Professor and Co-Director of ACIMS at Arizona State University, Tempe, USA.
The chapter Modeling and Simulation of Living Systems as Systems of Systems is written by Raphaël Duboz and Jean-Christophe Soulié of CIRAD (the Centre for International Cooperation in Agricultural Research for Development), France.