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Donghyuk Kum, Jichul Ryu, Yongchul Shin, Jihong Jeon, Jeongho Han, Kyoung Jae Lim and Jonggun Kim
This study accounted for the importance of daily expansion flow data in compensating for insufficient flow data in a watershed. In particular, the 8-day interval flow measurement data (intermittent monitoring data) could cause uncertainty in the high- or...
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Yongchul Kim
The rendezvous process is considered a key operation that allows a secondary user (SU) to access an unused authorized spectrum in cognitive radio networks (CRNs). Most existing works focused on fast guaranteed rendezvous without considering a sophisticat...
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Hyun Kwon, Yongchul Kim, Hyunsoo Yoon and Daeseon Choi
In this study, we propose an optimal cluster expansion-based intrusion-tolerant system (ITS) that can maintain quality of service (QoS) under a massive denial of service (DoS) attack. Our proposed scheme conserves resources while maintaining good QoS by ...
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Won Seok Jang, Jonggun Kim, Bernard A. Engel, Sung Won Kang, Youngkon Park, Heetaek Yoon, Kyoung Jae Lim, Younghun Jung and Yongchul Shin
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Youn Shik Park, Bernie A. Engel, Yongchul Shin, Joongdae Choi, Nam-Won Kim, Seong-Joon Kim, Dong Soo Kong and Kyoung Jae Lim
In recent years, Non-Point Source Pollution has been rising as a significant environmental issue. The sediment-laden water problem is causing serious impacts on river ecosystems not only in South Korea but also in most countries. The vegetative filter st...
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Chunhwa Jang, Donghyuk Kum, Younghun Jung, Kyoungsoon Kim, Dong Suk Shin, Bernard A. Engel, Yongchul Shin and Kyoung Jae Lim
The Long-Term Hydrology Impact Assessment (L-THIA) model has been used as a screening evaluation tool in assessing not only urbanization, but also land-use changes on hydrology in many countries. However, L-THIA has limitations due to the number of avail...
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