1.

December 2007 and January 2008, “D4AR: Fourth Dimensional Augmented Reality for Construction Progress Monitoring,” Tsinghua University, Huazhong University of Science and Technology, Tongji University, China.

2.

June and July 2006, "Collaborative Disasters Response Involving Critical Physical Infrastructure," University of Loughborough, England; EPFL, Lausanne, Switzerland.

3.

September 2005, “CP2R: Collaboration for Preparedness, Response and Recovery during Disaster,” Dean's Distinguished Lecture, Rice University.

4.

January 2005, "Collaborative First response to Disasters Involving Critical Physical Infrastructure: Drawing from Robust Natural Systems," University of Roughborough, England; Malaysia University of Science and Technology (MUST), Malaysia; National University of Tokyo, Tokyo; Japan.

5.

June 2004, "Collaborative First response to Disasters Involving Critical Physical Infrastructure: Drawing from Robust Natural Systems," University of Roughborough, England; Malaysia University of Science and Technology (MUST), Malaysia; National University of Singapore (NUS), Singapore; Hong Kong University of Science and Technology (HKUST), Hong Kong.

6.

January 2004, “Interdisciplinary Research in DARE: Disaster Aware/Resistant critical infrastructurE,” National Academies Convocation on Facilitating Interdisciplinary Research, Washington DC.

7.

January 2004, “Conflict Resolution in Large-Scale Civil Engineering Infrastructure Projects,” Malaysia University of Science and Technology, Kuala Lumpur, Malaysia.

8.

November 2003, “DARE: Disaster Aware/Resistant critical infrastructurE - Collaboration Perspective,” Keynote Speech at the ASCE 2003 Convention, Information Technology in Civil Engineering Conference, Nashville, TN.

9.

April 2002, “C3: Collaboration, Change and Conflict,” New York Transit Authority, New York City, NY.

10.

March 2002, “Dynamic Project Management for Civil Infrastructure Systems”, NAE Frontiers of Engineering, Irvine, California.

11.

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.

12.

July, 2000, “Mobile Collaboration”, Osaka Gankien University, Osaka, Japan.

13.

July, 2000, “Interactive Collaborative Environments”, Kajima Corporation, Japan.

14.

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

15.

August, 1999, “Collaborative Learning Environments”, School of Architecture at the University of Sydney, Sydney, Australia.

16.

May, 1999, “Collaborative Learning Environments”, Keynote Speaker on the 1999 Distance Learning Symposium at the Universidad Católica de Chile, Santiago, Chile.

17.

February 1999, “IT-Enabled Construction Offices”, Keynote Speaker at the Japanese Conference on Productivity in Construction, Tokyo, Japan.

18.

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

19.

April 1998, “Collaborative Negotiation Methodology,” Civil Engineering Program, George Mason University.

20.

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

21.

April 1997, “SCHEREC,” Primavera Corporation, Bala Cynwyd, Pennsylvania.

22.

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

23.

March 1997, "Role of Information Technology in the Future of the Province of Mendoza," Centro de Innovación Tecnológica, Facultad de Ciencias Económicas, Universidad Nacional de Cuyo, Mendoza, Argentina.

24.

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.

25.

June 1996, Keynote Speaker for the Panel 96 - XXII Conferencia Latino Americana de Informática, Bogotá, D.C., Colombia with the presentation “Artificial Intelligence in Engineering.”

26.

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

27.

July 1995, "Computer Supported Collaborative Engineering," Departamento de Ingeniería de Sistemas y Computación, Universidad de los Andes, Santa Fe de Bogotá, Colombia; also at the Centro de Investigaciones Tecnológicas, Mendoza, Argentina, and IMPSA, Mendoza, Argentina.

28.

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

29.

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

30.

July 1995, "Computer Models for Engineering Systems," Centro de Innovación Tecnológica, Departamento de Informática, Universidad Nacional de Cuyo, Mendoza, Argentina.

31.

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

32.

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.

33.

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

34.

October 1994, Plenary Presenter, “SHARED-DRIMS”, Thirteenth Annual Conference of Ford Foundation Fellows, Washington, DC.

35.

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