February 1993, "Design Rationale for Computer Supported Collaborative Engineering," Department of Computer Science, Worcester Polytechnic Institute, Worcester, MA.

June 1994, Panel Member, "Minority and Women Perspective", NAS/NAE/IOM Committee on Science, Engineering, and Public Policy (COSEPUP) "Reshaping the Graduate Education of Scientists and Engineers" 1995 Study

October 1994, "Da Vinci Agent Society Initiative," Electric Boat Corporation, Connecticut.

April 1995, "Design Rationale for Computer Supported Conflict Mitigation," Society for Advancement of Chicanos and Native Americans in Science (SACNAS) Fourth Annual Northeastern U.S. Chapter Meeting, Cornell University, Ithaca, NY.

July 1995, "Da Vinci Agent Society Initiative," Intergraph Corporation, Alabama.

July 1995, "Computer Models for Engineering Systems," Centro de Innovacion Tecnologica, Departamento de Informatica, Universidad Nacional de Cuyo, Mendoza, Argentina.

July 1995, "Role of Information Technology in the Future of the Province of Mendoza," Centro de Innovacion Tecnologica, Facultad de Ciencias Economicas, Universidad Nacional de Cuyo, Mendoza, Argentina.

July 1995, "Role of Information Technology in the Future of the Province of Rio Negro," Instituto Balseiro, Bariloche, Rio Negro, Argentina.

July 1995, "Computer Supported Collaborative Engineering," Departamento de Ingenieria de Sistemas y Computacion, Universidad de los Andes, Santa Fe de Bogota, Colombia; also at the Centro de Investigaciones Tecnologicas, Mendoza, Argentina, and IMPSA, Mendoza, Argentina.

October 1995, "Design Rationale for Computer Supported Change Management," Fourteenth Annual Conference of Ford Foundation Fellows, Washington, DC.

July 1996, "Da Vinci Agent Society Initiative," Kajima Corporation, Tokyo, Japan; also at Shimizu Corporation, Tokyo, Japan, Kawasaki Corporation, Japan, Fujitsu Corporation, Japan, and NEC Corporation, Japan,

March 1997, "Role of Information Technology in the Future of the Province of Mendoza," Centro de Innovacion Tecnologica, Facultad de Ciencias Economicas, Universidad Nacional de Cuyo, Mendoza, Argentina.

April 1997, "Da Vinci Agent Society Initiative," Argonne National Laboratory, Illinois.

April 1997, "SCHEREC," Primavera Corporation, Bala Cynwyd, Pennsylvania.

June 1997, "Project Management Integrating Cost and Schedule," Professional Session, New England Plant Engineering and Maintenance Conference, Boston, MA.

July 1997, "Collaborative Negotiation Methodology", NSF Program Directors April 1998, "Collaborative Negotiation Methodology," Civil Engineering Program, George Mason University.

July 1998, "Collaborative Negotiation for Large Scale Civil Engineering Projects," International Meeting on Artificial Intelligence in Structural Engineering, Ascona, Switzerland.

August, 1999, "Collaborative Learning Environments", School of Architecture at the University of Sydney, Sydney, Australia

August, 1999, "IT-Enabled Construction Offices", Civil Engineering Department, University of Sydney, Sydney, Australia.

July, 2000, "Interactive Collaborative Environments", Kajima Corporation, Japan

July, 2000, "Mobile Collaboration", Osaka Gankien University, Osaka, Japan

February, 2001, "Interactive Collaborative Environments", Caterpillar Lecture, University of Iowa, Sponsored by the Departments of Civil and Environmental Engineering and the Department of Mechanical Engineering.

September, 2001, "Dynamic Project Management for Civil Infrastructure Systems", NAE Frontiers of Engineering, Irvine, California.

** Outgrowth of supervised student research