Research This page provides information about PBI UPY Staff’s recent research. Rudha Widagsa, M.A. Nafisah Endahati, M.Hum. Sri Wiyanah, M.Hum. Sujatmiko, M.Hum. Juang Kurniawan Sy, M.Pd.BI Andi Dian Rahmawan, M.A.