Seminars and Talks 10:00 - 11:30, December 8, 2017 (Friday) R440, Astronomy-Mathematics Building, NTU Spectral Sequences 13:00 - 14:15, December 8, 2017 (Friday) R609, Astronomy-Mathematics Building, NTU On Descents of the Valuation of Root Group Data (II) 14:20 - 17:20, December 8, 2017 (Friday) R304, Astronomy-Mathematics Building, NTU Modeling and Analysis of Infectious Diseases