The conference of Digital Information Technology 2012, Modern Trends in the Information Technology. 9-11 October 2012, Amman- Jordan.
The Annual Conference of Postgraduate Studies and Scientific Research, Basic Science and Engineering Studies, 17-20 February 2012, Friendship Hall, Khartoum- Sudan.
The 32nd Annual Conference of the South African Society for Numerical and Applied Mathematics (SANUM’08),March 26-28, 2008, Stellenbosch– South Africa.
TB and HIV modeling conference, 6-8 November 2006, Stellenbosch University- South Africa.
