An Efficient Energy Aware Routing Protocol for Wireless Sensor Networks. - Uk-Pyo Han; Sang-Eon Park; Young-Jun Chung (ICWN, 2006)

An Enhanced Cluster Based Routing Algorithm for Wireless Sensor. - Uk-Pyo Han; Sang-Eon Park; Seung-Nam Kim; Young-Jun Chung (PDPTA, 2006)

An Energy Efficient Hybrid Cluster Routing Algorithm for Wireless Sensor Networks. - Uk-Pyo Han; Sang-Eon Park; Young-Jun Chung (PDPTA, 2007)

A Proposal on the Error Bound of Collaborative Filtering Recommender System. - Uk-Pyo Han; Gil-Mo Yang; Jae-Soo Yoo; Young-Jun Chung; Hee-Choon Lee (MUE, 2008)