During the last 10 years, I have delivered approximately 80 invited talks at international and national conferences and universities in Austria, Canada, China, Finland, France, Germany, Italy, Japan, Poland, Russia, Sweden, Switzerland, South Korea, Tunisia, and United Kingdom.

I was a principal speaker at the summer AMS-SIAM research conferences in Boulder, CO (1999), South Hadley, MA (1998, 1995), Seattle, WA (1995), at programs on Inverse Problems at MSRI, Berkeley, CA(2001), IPAM, Los Angeles (2003, 2005, 2006), RICAM, Linz, Austria (2009), Universidad Autonoma de Madrid, Spain, Isaac Newton Institute for Mathematical Sciences, Cambridge, England,(2011), and at international conferences in Edinburgh, UK (2000), St. Petersburg, Russia, Gargnano, Italy, Hong Kong, China (2001), Cortona and Pisa, Italy (2002), Banff Center and the Fields Institute, Toronto, Canada, and Seville, Spain (2003), IMA, Minneapolis, Helsinki, Finland, Fethiye, Turkey (2004), Catania, Italy (2005), Banff, Canada, Sapporo, Japan (2006), Cracow, Poland, vancouver, Canada (2007), Ecole Normale, Paris, France, Orlando, Florida, Cortona, Italy, Shanghai, China (2008), Linz, Austria, Manchester, England (2009), Valparaiso, Chile, Wuhan, China, Dresden, Germany, Pisa, Bologna, Italy (2010), Trieste, Gargnano, Italy (2011).

The coming conferences and programs are:

IPMS 2018 Conference, Malta, May 21-25, 2018

"International Conference on Inverse Problems", Fudan University, Shanghai, China, October 11-15, 2018

I have given colloquium talks at the Courant Institute of New York University, Northwestern University, City University of Hong Kong, Fudan University (China), Universities of Goettingen, Muenster (Germany), Florence, Milan, Rome, Trieste (Italy), Linz (Austria), Kyoto and Tokyo (Japan).

I am on editorial boards of the international journals Applicable Analysis, Inverse Problems, Inverse Problems and Imaging, Evolution Equations and Control Theory, Nonlinear Analysis: B.


Since 1990, my research has been supported by the NSF. The latest grant is: