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In NAND Flash-based SSDs, deduplication can provide an effective resolution of three critical issues: cell lifetime, write performance, and garbage collection overhead. However, deduplication at SSD device level distinguishes itself from the one at enterprise storage systems in many aspects, whose success lies in proper exploitation of underlying very(More)
In this paper, we implemented an interactive emotional content communication system using a portable wireless biofeedback device to support convenient emotion recognition and immersive emotional content representation for users. The newly designed system consists of the portable wireless biofeedback device and a novel emotional content rendering system. The(More)
Trip-based material handling systems such as AGV systems or lift trucks are often designed with a given flow matrix (or from-to chart), which typically shows the number of loaded trips that the devices must perform per unit time between the workstations. A from-to chart that would result from the parts flow in a facility actually is dictated by the transfer(More)
1Department of Industrial Engineering, Konkuk University, 1 Hwayang-Dong, Gwangjin-Gu, Seoul 143-701, South Korea 2Department of Industrial Engineering, Kyunghee University, 1 Seocheon-Dong, Kiheung-Gu, Yongin 446-701, South Korea 3Department of Industrial & Information Systems Engineering, Seoul National University of Technology, 172 Gongneung-Dong,(More)
Recently, it is widespread for malware to collect sensitive information owned by third-party applications as well as to escalate its privilege to the system level (the highest level) on the Android platform. An attack of obtaining root-level privilege in an Android environment can form a serious threat to users from the viewpoint of breaking down the whole(More)
The removal of heavy metals (Zn and Pb) and heavy petroleum oils (HPOs) from a soil with complex contamination was examined by soil flushing. Desorption and transport behaviors of the complex contaminants were assessed by batch and continuous flow reactor experiments and through modeling simulations. Flushing a one-dimensional flow column packed with(More)
This paper presents a novel disturbance compensation scheme to attenuate periodic disturbances on repetitive motion using permanent magnet linear synchronous motors (PMLSMs), and this scheme is called the periodical adaptive disturbance observer. The scheme is based on assumptions that all measured states and disturbances are periodic and repetitive when(More)