| 2009 | |
| 67. | Co-Chairman of the “Hardware Accelerated Computational Techniques for EM Applications”, session in the International IEEE/AP-S Symposium, Charleston, SC, June 2009 | 66. | Co-Chairman of the “Optimization and Antenna Design”, session in the International IEEE/AP-S Symposium, Charleston, SC, June 2009 | 65. | Co-Chairman of the “Reconfigurable Antennas”, session in the International IEEE/AP-S Symposium, Charleston, SC, June 2009 | 64. | Member of the Technical Program Committee for the 2009 IEEE Microwave Theory and Techniques Society International conference. | 63. | Member of the Technical Program Committee for the 2009 IEEE Antennas and Propagation Society International Symposium and USNC/URSI conference. |
| 2008 | |
| 62. | Member of the Technical Program Committee for the 2008 IEEE Microwave Theory and Techniques Society International conference. | 61. | Member of the Technical Program Committee for the 2008 IEEE Antennas and Propagation Society International Symposium and USNC/URSI conference. | 60. | Honorary Judge, Asia Pacific Microwave Conference (APMC) best paper prize, Hong Kong, 2008 | 59. | International Advisory Board member, Asia Pacific Microwave Conference (APMC), Hong Kong, 2008 | 58. | Co-Chairman of the “FDTD and Applications”, session in the International IEEE/AP-S Symposium, San Diego, CA, June 2008 |
| 2007 | |
| 57. | Co-Chairman of the “Satistical and New Optimization Applications”, session in the International IEEE/AP-S Symposium, Honolulu, Hawaii, June 2007. | 56. | Co-Chairman of the “Transient Numerical analysis”, session in the International IEEE/AP-S Symposium, Honolulu, Hawaii, June 2007. | 55. | Co-Chairman of the “Problems of Scale and Hybrid Modeling in Time Domain Electromagnetics”, session in the International IEEE Microwave Theory and Techniques Symposium, Honolulu, Hawaii, June 2007. | 54. | Member of the Technical Program Committee for the 2007 IEEE Microwave Theory and Techniques Society International conference. | 53. | Member of the Technical Program Committee for the 2007 IEEE Antennas and Propagation Society International Symposium and USNC/URSI conference. | 52. | Technical Co-Chair for the Mid-South Area Engineering and Science Conference (MAES2007). |
| 2006 | |
| 51. | Member of the Technical Program Committee for the 2006 IEEE Microwave Theory and Techniques Society International conference. |
| 50. | Member of the Technical Program Committee for the 2006 IEEE Antennas and Propagation Society International Symposium and USNC/URSI conference. |
| 49. | Member of the Technical Program Committee for the 2006 IEEE CEFC conference. |
| 2005 | |
| 48. | Member of the Technical Program Committee for the 2005 IEEE Antennas and Propagation Society International Symposium and USNC/URSI conference. |
| 47. | Co-Chairman of the "Beam Forming Network", session in the International IEEE/AP-S Symposium, Washington DC, June 2005. |
| 46. | Co-Chairman of the "Modeling Using FDTD and FEM", session in the International IEEE/AP-S Symposium, Washington DC, June 2005. |
| 2004 | |
| 45. | Member of the Technical Program Committee for the 2004 IEEE Antennas and Propagation Society International Symposium and USNC/URSI conference. |
| 44. | Co-Chairman of the "Multi-Band/Wideband Dielectric Resonator Antennas", session in the International IEEE/AP-S Symposium, Monterey, CA, June 2004. |
| 43. | Co-Chairman of the "Slotted Waveguide Arrays", session in the International IEEE/AP-S Symposium, Monterey, CA, June 2004. |
| 42. | Co-Chairman of the "Digital BeamForming Array Design", session in the International IEEE/AP-S Symposium, Monterey, CA, June 2004. |
| 41. | Chairman of the , "MEMS/NEMS and Alternative Nanoscal Sensors", IEEE nanoscale Devices and System Integration Conference, Maiami, FL, February 2004. |
| 2003 | |
| 40. | Co-Chairman of the "Recent Advances in the FDTD Method", session in the International IEEE/AP-S Symposium, Columbus, OH, June 2003. |
| 39. | Editor-in-Chief, Journal of the Applied Computational Electromagnetic Society (ACES), June 2001- Present. |
| 38. | Electronic Publication manager for the Applied Computational Electromagnetic Society Meeting (ACES), March 1999 - Present. |
| 37. | Member of the Technical Program Committee for the 2003 IEEE Antennas and Propagation Society International Symposium and USNC/URSI conference. |
| 36. | Member of the organizing committee for the Memphis Area Engineering and Science Conference (MAES 2003). |
| 35. | Chairman of the "Electrical Engineering Session C1", the Memphis Area Engineering and Science Conference (MAES 2003), May 2003. |
| 34. | Chairman of the "Electrical Engineering Session C3", the Memphis Area Engineering and Science Conference (MAES 2003), May 2003. |
| 2002 | |
| 33. | Chairman of the "Electromagnetic Waves in Complex Media" Session in the Progress in Electromagnetics Research Symposium (PIERS), Boston, MA, July 2002. |
| 32. | Chairman of the "Bandwidth Enhancement and Minimization of Antennas " session in the International IEEE/AP-S Symposium, San Antonio, Texas, June 2002. |
| 31. | Member of the organizing committee for the Memphis Area Engineering and Science Conference (MAES2002). |
| 30. | Chairman of the "Electrical Engineering session A3", the Memphis Area Engineering and Science Conference (MAES2002). |
| 29. | Chairman of the "Electrical Engineering session B3", the Memphis Area Engineering and Science Conference (MAES2002). |
| 28. | Publication Chair for the Annual Review of Progress in Applied Computational Electromagnetic Society Meeting (ACES), 2000.Publication Chair for the Annual Review of Progress in Applied Computational Electromagnetic Society Meeting (ACES), March 2002 |
| 27. | Chairman of the "Finite Difference" session, (ACES) conference, March 2002. |
| 26. | Judge, Mississippi Region VII Science and Engineering Fair, 2002 |
| 2001 | |
| 25. | Chairman of the "Finite Methods and Integral Equation Methods" Session in the International Conference on Electromagnetics in Advanced Applications (ICEAA01), Torino, Italy, September 2001. |
| 24. | Chairman of the "Computational Electromagnetics" Session in the Progress in Electromagnetics Research Symposium (PIERS), Osaka, Japan, July 2001. |
| 23. | Member of the organizing committee for the Memphis Area Engineering and Science Conference (MAES2001). |
| 2000 | |
| 22. | Chairman of the Numerical Techniques" session in Antenna Technology and Applied Electromagnetics Symposium (ANTEM'2000), Winnipeg, Canada, August 2000. |
| 21. | Chair of the Educational Activities Committee Region 3 of IEEE, January 2000 - December 2001. |
| 20. | Member of the organizing committee for the IEEE-APS Conference on Antennas and Propagation for Wireless Communications (AWPC2000). |
| 19. | Member of the organizing committee for the Memphis Area Engineering and Science Conference (MAES2000). |
| 18. | Publication Chair for the Annual Review of Progress in Applied Computational Electromagnetic Society Meeting (ACES), 2000. |
| 17. | Organizer of the "Antennas" session in the IEEE-APS Conference on antennas and propagation for wireless Communications, November 2000 |
| 16. | Participation in the IEEE Admission and Advancement Committee meeting, Memphis, May 2000 |
| 15. | Chairman of the “Applications of the Finite Difference Time Domain Technique” session, the Applied Computational Electromagnetic Society (ACES) conference, March 2000. |
| 1999 | |
| 14. | Chairman of the "Finite Difference" session, the Applied Computational Electromagnetic Society (ACES) conference, March 1999. |
| 13. | Co-chairman of the "Guided Waves" session in the International IEEE/AP-S Symposium, Orlando, Florida, July 1999. |
| 1998 | |
| 12. | Chairman of the “FDTD” session, (ACES) conference, March 1998. |
| 11. | Member of the organizing committee for the IEEE-APS Conference on Antennas and Propagation for Wireless Communications (AWPC1998). |
| 1996 | |
| 10. | Chairman of the "Finite methods" session in the International Radio Science Meeting URSI-B, June 1996 |
| 9. | Chairman of the software exchange committee of the Applied Computational Electromagnetic Society (ACES), March 1996-Present. |
| 1995 | |
| 8. | Co-chairman of the "Analysis and Synthesis of Microstrip Patch Antennas" session in the International IEEE/AP-S Symposium, Newportt Beach, CA, June 1995. |
| 1994 | |
| 7. | Co-chairman of the "Multilayer Microstrip Antennas and Surface Wave Suppression" session in the International IEEE/AP-S Symposium, Seattle, WA, June 1994. |
| 1993 | |
| 6. | Organizer and Chairman of the "Recent Advances in the Computation of the Scattering and Diffraction of Electromagnetic Waves" Session in the third Progress in Electromagnetics Research Symposium (PIERS), Pasadena, CA, July 1993. |
| 5. | Organizer and Chairman of the "Scattering and Diffraction of Electromagnetic Waves" Session in the third Progress in Electromagnetics Research Symposium (PIERS), Pasadena, CA, July 1993. |
| 1991 | |
| 4. | Organizer and Chairman of the "Scattering From Composite Structures" session in the Second Progress in Electromagnetics Research Symposium (PIERS), Boston, MA, July 1991. |
| 3. | Chairman of the "Scattering and Diffraction" session in the International IEEE/AP-S Symposium, London , Canada, June 1991. |
| 1990 | |
| 2. | Chairman of the "Transient Electromagnetic Theory" session in Antenna Technology and Applied Electromagnetics Symposium (ANTEM'90), Winnipeg, Canada, August 1990. |
| 1. | Chairman of the "Numerical Methods II" session in the International Union of Radio Science meeting (URSI), Dallas, TX, May 1990. |