Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Dong-Wook Jung"'
Autor:
Mai The Vu, Seong Han Kim, Van P. Nguyen, Nguyen Xuan-Mung, Jiafeng Huang, Dong-Wook Jung, Hyeung-Sik Choi
Publikováno v:
Journal of Marine Science and Engineering, Vol 11, Iss 12, p 2216 (2023)
Underwater vehicles have capacity limits for control inputs, within which their time-optimal trajectories (TOTs) can be formulated. In this study, the fastest trajectory for the depth control of a hybrid underwater glider (HUG) was found using buoyan
Externí odkaz:
https://doaj.org/article/78bc80c8ad1f40df88f6110307b47b4c
Autor:
Ngoc-Duc Nguyen, Mai The Vu, Phi Nguyen, Jiafeng Huang, Dong-Wook Jung, Hyunjoon Cho, Phan Huy Nam Anh, Hyeung-Sik Choi
Publikováno v:
Journal of Marine Science and Engineering, Vol 11, Iss 6, p 1099 (2023)
Underwater vehicles are a powerful tool that can assist oceanologists with measuring the state of oceans on a large scale. The heading control is essential for the underwater vehicle to follow a specific path. This study describes the general decoupl
Externí odkaz:
https://doaj.org/article/86c1f121501a47e3ab0b7532a769bad1
Autor:
Ji-Hyeong Lee, Sang-Ki Jeong, Dae-Hyeong Ji, Hae-Yong Park, Do-Young Kim, Ki-Beom Choo, Dong-Wook Jung, Myung-Jun Kim, Myoung-Hak Oh, Hyeung-Sik Choi
Publikováno v:
Applied Sciences, Vol 13, Iss 5, p 3120 (2023)
To overcome the limitations of a single unmanned surface vehicle (USV), this study investigated the swarm control algorithms of USVs. Among various swarm control methods, a leader–follower swarm control method was selected and studied. The performa
Externí odkaz:
https://doaj.org/article/a47c558aab11480c9fed976db1731091
Autor:
Jiafeng Huang, Hyeung-Sik Choi, Dong-Wook Jung, Ki-Beom Choo, Hyunjoon Cho, Phan Huy Nam Anh, Ruochen Zhang, Joon-Young Kim, Daehyeong Ji, Jung-Hyeun Park
Publikováno v:
Applied Sciences, Vol 13, Iss 3, p 1551 (2023)
The twin hybrid autonomous underwater vehicle (THAUV) is a novel type of unmanned underwater platform that consists of a twin torpedo-shaped hull and is actuated by two buoyancy engines and two thrusters proposed in this paper. The THAUV was designed
Externí odkaz:
https://doaj.org/article/708a16e43c834445849a6f97340fb55b
Autor:
Jiafeng Huang, Hyeung-Sik Choi, Mai The Vu, Dong-Wook Jung, Ki-Beom Choo, Hyun-Joon Cho, Phan Huy Nam Anh, Ruochen Zhang, Jung-Hyeun Park, Joon-Young Kim, Huy Ngoc Tran
Publikováno v:
Journal of Marine Science and Engineering, Vol 10, Iss 7, p 891 (2022)
A typical structure of an underwater glider (UG) includes a pair of fixed wings, and the hydrodynamic force driving the glider forward as descending or ascending in the water is generated primarily by the fixed wings. In this paper, a simplified glid
Externí odkaz:
https://doaj.org/article/ff72e7be3b8447e99edd5125d54081dc
Autor:
Jiafeng Huang, Hyeung-Sik Choi, Dong-Wook Jung, Ji-Hyeong Lee, Myung-Jun Kim, Ki-Beom Choo, Hyun-Joon Cho, Han-Sol Jin
Publikováno v:
Applied Sciences, Vol 11, Iss 17, p 8212 (2021)
Net buoyancy, as the main power source for the motion of an underwater glider, is affected by the pump or bladder that the glider adopts to change its buoyancy force in water. In this study, a new underwater glider that can dive to a depth of 400 m a
Externí odkaz:
https://doaj.org/article/f595deb9287b4fa6aa00f81a36e82650
Autor:
Su-Jung Yoon, Do-Hoon Kim, Ga-Eun Nam, Yeo-Joon Yoon, Kyung-Do Han, Dong-Wook Jung, Sang-Woon Park, Young-Eun Kim, Sung-Ho Lee, Sang-Su Lee, Yang-Hyun Kim
Publikováno v:
PLoS ONE, Vol 9, Iss 10, p e111179 (2014)
BACKGROUND: Albuminuria is associated with cardiovascular disease, and the relationship between albuminuria and hypertension is well established in many studies. So the control of hypertension is critical for decreasing cardiovascular events and albu
Externí odkaz:
https://doaj.org/article/7dbb27b0489648b093aef2cb4c987640
Autor:
Young Jin Tak, Jeong Gyu Lee, Yun Jin Kim, Nam Cheol Park, Sang Soo Kim, Sangyeoup Lee, Byung Mann Cho, Eun Hee Kong, Dong Wook Jung, Yu Hyeon Yi
Publikováno v:
Asian Journal of Andrology, Vol 17, Iss 2, Pp 324-328 (2015)
Previous studies have demonstrated that male hypogonadism is associated with a low level of vitamin D. However, no reports have investigated the effects of vitamin D on testosterone levels in Korean men. Our aim was to investigate whether testosteron
Externí odkaz:
https://doaj.org/article/ea3b55e67e0548e6abc67577672da57e
Autor:
Myungjun Kim, Hyunjoon Cho, Ki-Beom Choo, Huang Jiafeng, Dong-Wook Jung, Jung-Hyeun Park, Ji-Hyeong Lee, Sang-Ki Jeong, Dae-Hyeong Ji, Hyeung-Sik Choi
Publikováno v:
Sensors and Materials. 34:3213
Autor:
Sung Chul Hong, Dong Wook Jung
Publikováno v:
European Polymer Journal. 162:110906
The utilization of the noncatalytic C-H insertion capability of the nitrene intermediate of azide-containing compounds is proposed in this study for the clean fabrication of polymer-inorganic functional hybrid materials with elasticity and adhesion c