Implementation of a Sensor-Cloud Platform for Physical Sensor Management on CoT Environments Lei Hang 1 ID , Wenquan Jin 1 ID , HyeonSik Yoon 2, Yong Geun Hong 2 and Do Hyeun Kim 1,* 1 Department of Computer Engineering, Jeju National University, Jeju 63243, Korea; hanglei@jejunu.ac....