SEMINAR    Thursday November 30th, 2006 - h. 15:00 Auditorium B. Touschek    O. W. Greenberg (Maryland U.) A schematic model of generations of quarks and leptons. Abstract   The model has exactly three generations of quarks and leptons at presently accessible energies. I will describe both the positive and the problematic features of the model. I will also give generic predictions of models of this type for energies much higher than are presently available, in particular two body decays with no missing energy.