1. Sr. Lect.; Technion, Israel Inst. of Tech., Haifa, Israel
2. Visiting Sci.; IBM Thomas J. Watson Res. Ctr., Yorktown Heights, NY; on leave as Assoc. Prof., Technion, Israel Inst. of Tech., Haifa, Israel
3. Sr. San. Engr.; Envir. Engrg. and Tech. (Israel) Ltd., Ramat Gan, Israel