Prof. Yeon-Mo Yang is a Professor in the department of Electronic Engineering, Kumoh National Institute of Technology, Gumi, Korea. He received the B. Eng in the field of electrical and electronic engineering from Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea in 1990 and Ph.D. degree from Gwangju Institute of Science and Technology (GIST), Gwangju, Korea in 2006, in the field of optical networks. From 2005 to 2006 he was a post doctoral fellow in North Carolina State University (NCSU), Raleigh in networks engineering and a short time visiting scholar at UC Berkeley, Berkeley, CA, in wireless sensor networks. From 2006 to 2008, he was in Daegu-Gyeongbuk Institute of Science and Technology (DGIST) as a senior researcher where he has been a project leader of the developments of wireless sensor networks. His current research interests include wireless sensor networks analysis and implementation both at the physical layer and at the networks layer; dynamic bandwidth allocation schemes in passive optical networks; and realizations of hybrid embedded systems connected to Under Acoustic Sensor Networks, Mechronics and Information Technology.