May 11, 2022 | 9:30 am - 11:00 am Preliminary Oral Exam – Dongju Yun COX400 Dongju Yun will be having her Ph.D. Preliminary Oral Exam on Wednesday, May 11, 2022, at 9:30 a.m. in Cox 400 under the direction of Dr. Reza Ghiladi.