Abd-El-Kader SAHRAOUI born in the city of Frenda in the South West of Algeria Obtained his BSC and MSC from Manchester university at UMIST (Faculty of Science and technology) in 1977 and 1979. He has held different positions in industry from 79 to 84 and obtained his PhD and DSc degrees from Toulouse University in 1987 and 1994. He has been lecturer, assistant and associate professor at Toulouse university UPS and at Tarbes Eng Institute ENIT .He is actually Professor at Toulouse II University in the college of IUTB in the Industrial Eng Dept and research associate since 1984 at LAAS-CNRS of the French research council. He has been associate researcher at the University of California, Berkeley during academic year 1999-2000 pursuing research in system engineering for advanced transportation systems. He was guest professor and chair of requirement engineering at Hasso plattner Institute for systems sofware engineering , Postdam , Germanny in academic year 2001/2002.