counselling( ER 2004), Shanghai, China, Nov. International Computer Software and Applications Conference( COMPSAC 2004), Hong Kong, Sept. 2003), Chicago, Illinois, USA, Oct. Cybernetics and enterprises( SCI'2003), Orlando, Florida, USA, Jul. 2012), Vilamoura, Algarve, Portugal, Feb. Conceptual Modeling( ER 2008), Barcelona, Catalonia, Spain, Oct. Klagenfurt, Austria, May 30 - June 2, 2006. PEC'2002), Zaporozhye, Ukraine, Sept. 2004: University of Nice - Sophia Antipolis, France, International Project Management Institute. person in Software Development Projects.