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• "Efficient use of the Finite Difference Time Domain Technique for Antennas and Electromagnetic Applications," 2010 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE 2010) , Port Dickson, Malaysia, 9-11 November 2010.
• "GPU Acceleration of the Finite Difference Time Domain Techniques for EM Applications," The Applied Computational Electromagnetic Society (ACES) Conference, Tampere, Finland, April 2010. (with M. Inman)

• "The Finite Difference Time Domain Technique," Remote Sensing ans Space Science, Cairo, Egypt, May 2009.
• "GPU Acceleration of the Finite Difference Time Domain Techniques for EM Applications," The Applied Computational Electromagnetic Society (ACES) Conference, Monterey, March 2009.

• "The Finite Difference Techniques for EM Applications," Hong Kong , November 2007.
• "The Iterative Multi Region Technique for Electromagnetic Scattering from Large Scale Problems," The Applied Computational Electromagnetic Society (ACES) Conference, Verona, Italy, March 2007.

• "The Finite Difference Techniques for EM Applications," Syracuse University, Syracuse, NY, July 2005.
• "The Finite Difference Techniques for Antenna Applications," Magdeburg University, Germany, May 2005.
• "Wideband Antennas," The IEEE/Applied Computational Electromagnetic Society (ACES) Conference, Honolulo, Hawaii, April 2005.
• "Finite Difference Techniques for Antenna Applications," The Electronics Research Institute, Cairo, Egypt, January, 2005.

• "The Finite Difference Time Domain for Electromagnetic Applications," The Applied Computational Electromagnetic Society (ACES) Conference, Monterey, April 2004.

• "Analysis and Design of Printed and Slot Antennas for Radar Applications," The Institute of Electrical and Electronic Engineers (IEEE) Radar Conference, Huntsville, AL, May 2003.
• "Workshop on Antenna Analysis and Design Using The FDTD Technique," The Applied Computational Electromagnetic Society (ACES) Conference, Monterey, March 2003. (with Dr. A.W. Glisson)
• "The Finite Difference Time Domain for Electromagnetic Applications," The Applied Computational Electromagnetic Society (ACES) Conference, Monterey, March 2003. (with Dr. A.W. Glisson)

• "High Speed Connector Design Fundamentals," Cinch, August 2002. (with Dr. D. kajfez)
• "The Finite Difference Time Domain Technique and Its Applications," The Applied Computational Electromagnetic Society (ACES) Conference, Monterey, March 2002. (with Dr. A.W. Glisson)

• "Analysis and Design of Microstrip Antennas using the FDTD Technique," The Electronics Research Institute, Cairo, Egypt, September 2001.
• "Vector Network Analyzer Measurements," The University of Mississippi, Electrical Enginering Department, September 6-7, 2001. (With Dr. D. kajfez, and Dr. C. E. Smith)
• "The Finite Difference Time Domain Technique and Its Applications," The Applied Computational Electromagnetic Society (ACES) Conference, Monterey, March 2001. (with Dr. A.W. Glisson)

• "The Basics of The Finite Difference Time Domain Technique for Electromagnetic Applications," The Applied Computational Electromagnetic Society (ACES) Conference, Monterey, March 2000.(with Dr. A.W. Glisson)

• "The FDTD Technique and its Applications," The Electronics Research Institute, Cairo, Egypt, June 1999.

• "Introduction to FDTD and its Applications," The Electronics, Circuits, and Systems Conference, Cairo, Egypt, December 1997.