Editorial Boards: 
  Associate Editor, 2001 - 2010, 
     Journal of Crystal Growth
  Associate Editor, 1998 - Present,
     Interfaces and Free Boundaries
  Associate Editor, 1991 - 2005,
     SIAM Journal on Applied Mathematics
  Associate Editor, 1994 - 2002, 
Journal of Computational Physics
 Membership in Professional Societies: 
APS, 
SIAM, 
Sigma Xi.
 Served on review panels for: 
 
    DOE Office of Science (1993, 1994), 
    NASA Microgravity Research Program (1991, 1995)
    NSF Division of Mathematical Sciences (1996, 1998, 2001, 2003).
 
 Served on organizing committees for: 
 IMA workshop On the Evolution of Phase Boundaries, 9/90
 IMA workshop on Microstructure and Thin Films, 1/96
 SIAM conference on Emerging Issues in Mathematics and Computation 
from the Materials Sciences, 4/94 
 Second SIAM Conference on
         Mathematical Aspects of Materials Science, 5/97
         Third SIAM Conference on Mathematical Aspects of 
         Materials Science, 5/00 [co-chair]
 Interfaces for the Twenty-First Century, 10/99
 
 Organized conference sessions: 
 
 Fluid Dynamics of Materials Processing, 1993 Joint April Meeting of 
     the American Physical Society, Washington, DC.
 Interfacial Instabilities during
     Solidification, SIAM 1990 Annual Meeting, Chicago, IL.