Seismic Resistance of Composite Structures
University of Tokyo, Institute of Industrial Science, Tokyo, Japan, April 1990

Ductility of Composite Steel-Concrete Beam-columns
University of Tokyo, Institute of Industrial Science, Tokyo, Japan, April 1992

Implications of Recent Earthquakes on Earthquake Risk
The British Council, Tokyo, Japan, June 1995

Damage to Steel Frame Structures in Recent Earthquakes
International Conference on Modern Code Development, University of Cairo, Cairo, Egypt,
November 26, 1995
       
Earthquake Risk in Egypt
The British Council, Cairo, Egypt, December 30, 1996

Simplified Methods for Accounting for Vertical Earthquake Motion in Design
Florida Atlantic University, Florida, USA, March 29, 1997

Seismic Risk in the Middle East and Implication for Lebanon
The Order of Engineers, Beirut, Lebanon, June 16, 1997

Observed Damage of RC Bridges and Impact on Conceptual Design
McMaster University, Hamilton, Ontario, Canada, April 1999

Seismic Behavior of High Rise High Strength RC Structures
McMaster University, Hamilton, Ontario, Canada, April 1999

Development of Multi-state Codes; The Experience of Eurocode 8 for Seismic Design
Arab Codes Symposium, HBRC, Cairo, Egypt, 21-23 September 2003

Newmark Distinguished Lecture: Vulnerability Assessment under Earthquake Action:
from Field Observations to Hybrid Simulations
UIUC, Urbana-Champaign, IL, 18 October 2004

The HBRC 50th Anniversary Conference:
Approaches to the Assessment of Earthquake Response of Complex Structural Systems
Cairo, Egypt, 20-22 December 2004

ASCE International Conference on Computing in Civil Engineering,
Multi-platform earthquake analysis of geotechnical structural systems
Cancun, Mexico, July 12-15, 2005

Multi-Objective Optimal Seismic Design of Buildings Using Advanced Engineering Materials
University of Napoli Federico II, Napoli, Italy, July 2011

Analytical and Experimental Investigation of the Effect of Vertical Ground Motion on RC Bridge Piers
University of California, San Diego, July 2011

Fifth International Conference on Structural Engineering, Mechanics and Computation
Early observations from the Magnitude Mw 7.0 January 12, 2010 Haiti Earthquake
Cape Town, South Africa, September 2011

Jordan Order of Engineers Fifth International Civil Engineering Conference
Multi-Objective Optimal Seismic Design of Buildings Using Advanced Engineering Materials
Amman, Jordan, January 2012