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Hyun-Guk Kim, Dong-Geon Kim, Ryoon-Ho Do, Kyung-Rae Koo and Young-Joon Yu
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Wilfrand F. Bejarano-Herrera, Carlos A. Marcillo-Paguay, Daniel F. Rojas-Tapias and German A. Estrada-Bonilla
Cabbage serves as an important food and nutrition source for numerous communities in the world, yet its production requires substantial quantities of chemical fertilizers. In this study, we assessed the impact of both increasing nitrogen and phosphorus m...
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Kyung-Rae Koo, Hyun-Guk Kim, Dong-Geon Kim, Seong-Cheol Kwon and Hyun-Ung Oh
In the launch environment, satellites are subjected to severe dynamic loads. These dynamic loads in the launch environment can lead to the malfunction of the payload, or to mission failure. In order to improve the structural stability of satellites and e...
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Seoyeon Hong, Youngun Han, Jihae Kim, Bo Ra Lim, Si-Young Park, Heeju Choi, Mi Rae Park, Eunmi Kim, Soohyung Lee, Yujeong Huh, Kyunghyun Kim, Won-Seok Lee, Taewoo Kang and Min-Seob Kim
Effective management of nitrate loading in complex river systems requires quantitative estimation to trace different nitrogen sources. This study aims to validate an integrated framework using soluble nitrogen isotope ratios (d15N?NH4 and d15N?NO3) and h...
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Rahma Tia Harahap, Isnaniar Rahmatul Azizah, Mieke Rochimi Setiawati, Diyan Herdiyantoro and Tualar Simarmata
Upland rice farming plays a crucial role in ensuring food security in Indonesia. This study aimed to evaluate the impact of plant growth-promoting rhizobacteria (PGPR) isolates on the growth of upland rice. The bioassay and pot experiments were conducted...
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Ji-Hong Li, Hyungjoo Kang, Min-Gyu Kim, Mun-Jik Lee, Gun Rae Cho and Han-Sol Jin
In this paper, we present a 3D formation control scheme for a group of torpedo-type underactuated autonomous underwater vehicles (AUVs). These multiple AUVs combined with an unmanned surface vessel (USV) construct a sort of star-topology acoustic communi...
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Kyu-Young Kang, Seul-Gi Lee, Hyeon Kang, Jung-Gil Kim, Gye-Rae Tack and Jin-Seung Choi
Inertial sensors are widely used for classifying the motions of daily activities. Although hierarchical classification algorithms were commonly used for defined motions, deep-learning models have been used recently to classify a greater diversity of moti...
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Yeon-Hyeok Park, Seong-Cheol Kwon, Kyung-Rae Koo and Hyun-Ung Oh
Whole-spacecraft launch-vibration isolation systems are attractive for achieving the goal of better, faster, cheaper, and lighter small satellites by reducing the design-load and vibration-test specifications for on-board components. In this study, a thr...
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Ji-Hong Li, Mun-Jik Lee, Hyungjoo Kang, Min-Gyu Kim and Gun Rae Cho
ROV trencher is a kind of ROV which trenches the sea floor using a specifically designed tool and buries the subsea cables and pipelines. According to the soil conditions, this trenching method can have two different types, one is mechanical cutting and ...
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Gun Rae Cho, Geonhui Ki, Mun-Jik Lee, Hyungjoo Kang, Min-Gyu Kim and Ji-Hong Li
In underwater environments restricted from human access, many intervention tasks are performed by using robotic systems like underwater manipulators. Commonly, the robotic systems are tele-operated from operating ships; the operation is apt to be ineffic...
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