| Suncica Canic, U. of Houston, December 2007 |
| Di Liu, MSU, December 2007 |
| Olof Widlund, Courant, November 2007 |
| Maaten V de Hoop, Purdue, November 2007 |
| Irene Fonseca, CMU, November 2007 |
| Tony Chan, NSF, November 2007 |
| Robin Selinger, Kent State University,
November 2007 |
| Tom Russell, National Science Foundation,
November 2007 |
| Benjamin Texier, Univ. of Paris 7,
November 2007 |
| Shangyou Scott Zhang, U. Del, October 2007 |
| Yuri Kuznetsov, U. of Houston, October 2007 |
| Peter Howard, TAMU, October 2007 |
| Tom Hagstrom, UNM, October 2007 |
| Richard Lehoucq, Sandia National Labs, October 2007 |
| Sulin Zhang, PSU, October 2007 |
| Tzanio Kolev, LLNL, October 2007 |
| Corina Drapaca, PSU, October 2007 |
| Ignacio Uriate-Tuero, U. of Missouri, October 2007 |
| Ed Green, PSU, September 2007 |
| YoungJu Lee, Rutgers, The State University of
New Jersey, September 2007 |
| Claudio Rebbi, BU, September 2007 |
| Murthy Guddati, September 2007 |
| Xiaoming Wang, FSU, August 2007 |
| Weizhu Bao, NUS, August 2007 |
| Thomas Krainer, Penn State University, Altoona, May 2007 |
| Athanasios Tzavaras, University of Maryland, May 2007 |
| Liviu Dinu,Institute of Mathematics of the Romanian Academy, April 2007 |
| Debora Amadori, University of L'Aquila, April 2007 |
| Tiezheng Qian, HKUST, April 2007 |
| Volodymyr Rybalko, B. Verkin Institute, April 2007 |
| Ricardo Nochetto, University of Maryland, April 2007 |
| Richard Falk, Rutgers University, April 2007 |
| Andrea Nahmod, University of Massachusetts, April 2007 |
| Ismael Herrera Revilla, UNAM, April 2007 |
| Alejandro Rey, McGill University, April 2007 |
| Xiaoming Wang, Florida State University, April 2007 |
| Robert Falgout, LLNL, March 2007 |
| Kevin Zumbrun, Indiana University, March 2007 |
| David Ambrose, Clemson University, March 2007 |
| Richard Lehoucq, Sandia National Laboratories, March 2007 |
| Carme Calderer, University of Minnesota, March 2007 |
| Jorge Sofo, Penn State University, March 2007 |
| Eric Vanden-Eijnden, New York University, March 2007 |
| Mark Williams, University of North Carolina, February 2007 |
| Bo Su, Iowa State University, February 2007 |
| Marius Mitrea, University of Missouri, February 2007 |
| Giuseppe Coclite, University of Bari, February 2007 |
| Wei Zhu, Rice University, February 2007 |
| Guang Qin, Texas A&M University, February 2007 |
| Pilhwa Lee, Courant Institute, February 2007 |
| Richard Brower, Boston University, February 2007 |
| Jichun Li, University of Nevada, January 2007 |
| Jose Carrillo de la Plata, Universitat Autonoma de Barcelona, January 2007 |
| Roberto Camassa, University of North Carolina, January 2007 |
