Allen Tucker and Peter Wegner: Issue Editors Brad A. Myers, M. Tamer Ozsu and Patrick Valduriez; Judea Pearl; J.R. Quinlan; Edward M. Reingold; Steven P. Reiss; Ellen Riloff and Lee Hollaar; A.P. Rockwood; Mary Beth Rosson; Betty Salzberg; Stuart A. Selber, Johndan Johnson-Eilola, and Brad Mehlenbacher; Ravi Sandhu and Pierangela Samarati; Stephen R. Schach; David A. Schmidt; J.S. Shang; Dennis Shasha; Howard Jay Siegel, Henry G. Dietz, and John K. Antonio; Avi Silberschatz, Henry F. Korth, and S. Sudarshan; lan Sommerville; William Stallings; John A. Stankovic; Roberto Tamassia; Nadia Magnenat Thalmann and Daniel Thalmann; Colin Ware; Alan