Xi Zhu will defend his dissertation, "Delineating Cognitive Maps in Teams: The Structure, Antecedents, and Consequences of Transactive Memory Systems," Mon. July 18, 8:00-10:00 am, 915 Soc Sci Bldg. The public portion of the defense will be 8:00-8:30 am. His advisor is Prof. David Knoke. In anticipation of a successful defense, the graduate program is planning a small celebration for Xi, to be held 10:00 am, 915 Soc Sci Bldg. All current department members are welcome to attend.