1. Dept. of Engineering Sciences and Applied Mathematics; Northwestern University; Evanston IL 60208
2. Dept. of Mechanical Engineering; Northwestern University; Evanston IL 60208
3. The Dow Chemical Company; Midland MI 48667
4. Dept. of Chemical and Biological Engineering; Northwestern University; Evanston IL 60208
5. The Northwestern Institute on Complex Systems (NICO), Northwestern University; Evanston IL 60208