"Forces Acting on the Cutter Head of a Dredger (Theoretical Approach)”, Sixth International Conference on Production Engineering & Design for Development – PEDD 6, Faculty of Engineering – Ain Shams University, February , Cairo. “Ultrasonic Precision Cutting”, Computer Aided Production Engineering (CAPE). University of Edinburgh, Uk, March . “An Operating and Diagnostic Knowledge-Based System for Wire EDM”, KES 2003, LNAI 2773, pp. 691-698, 2003  Springer-Verlag Berlin Heidelberg . “Mathematical Modelling for Wire Electrical Discharge Machining of Aluminum-Silicon Carbide Composites”, 34th International MATADOR Conference Formerly The International Machine Tool Design and Research Conference, July ,Manchester, England “The State of the Art of Micro-Wire Electrical Discharge Machining” Proceeding of MDP-8, Cairo University Conference on Mechanical Design and Production, Cairo, Egypt, January 4-6. “An Intergrated Study on The Cutting Forces With Application on Hard Soil Underwater”, Engineering Research Journal, Shoubra Faculty of Engineering, June , Cairo, Egypt. “Effect of Gas Composition on the Mechanical Properties and Microstructure of Bainetic Steel Weld Metal”, IIW International Congress on Welding and Allied Processes, December , Cairo, Egypt. “Effect of M-A Composition on the Corrosion Behavior of 100 HSLA Weld Metal”, IIW International Congress on Welding and Allied Processes, December , Cairo, Egypt.