A concurrency control protocol for read-only transactions in real-time secure database systems. - Heejun Han; Seog Park; Chanjung Park (RTCSA, 2000)

An useful method for scene categorization from new video using visual features. - Heejun Han; Jaesoo Kim (NaBIC, 2011)

Search result optimization using user search history. - Heejun Han; Jeasoo Kim; Byeong-Hee Lee; Kwangyoung Kim (NaBIC, 2011)