• Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
• /
• 2003.08a
• /
• pp.283-289
• /
• 2003

잠제는 수면 아래에 건설되는 대표적인 친환경의 해안ㆍ항만구조물로 일본을 위시한 외국에서는 이안제 등과 같은 대체표사제어구조물로 잠제를 다수 시공해 왔으며, 국내에서는 처음으로 부산시의 송도해수욕장에 해안침식방지를 위해 잠제를 건설하고 있다. 잠제에 의한 파랑제어의 주요한 메커니즘은 천단상에서의 입사파랑과 구조물과의 마찰 및 입사파랑의 강제쇄파에 의한 에너지 소산이다. (중략)

• 월간낙농육우
• /
• v.37 no.6
• /
• pp.118-123
• /
• 2017

가로등과 달빛이 시계를 분별케 해주는 새벽시간. 착유실의 불빛이 커지자 갓 잠에서 깨어난 듯 부스즈한 모습을 한 젖소들이 동요한다. 낙농가들은 어느 누구보다 부지런하다. 이른 새벽 착유로 하루를 시작해 시간에 맞춰 사료를 주는 것은 물론 젖소들의 건강상태를 점검하고 불어난 젖을 짜줘야 하는 등 잠시도 쉴 수 없기 때문이다. 매일 반복되는 일상일 테지만 저마다 사연이 있고 특별할 터. 이에 경기도 김포에 위치한 태홍목장을 찾아 목장의 하루를 돌아봤다.

• 한국약용작물학회:학술대회논문집
• /
• 2008.05a
• /
• pp.83-84
• /
• 2008

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
• /
• 2003.05a
• /
• pp.22-26
• /
• 2003

This paper presents a genetic algorithm based autonomic movement algorithm for an autonomous underwater vehicle(AUV) and verified it to simulation. Also, developed program that can do simulation on two dimension and three dimension in seabed environment. The presented algorithm is applicable to a escape from the recursive search and a development of obstacle avoidance system.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2019.05a
• /
• pp.153-154
• /
• 2019

There are many jobs, not actually sleeping. Sleepy driving is one of the biggest problems in modern society. In this paper, we propose a system to control underwater guns by using deep learning (YOLO) to check eyes and to check drowsiness. So let your mind be clear.

• 중국학논총
• /
• no.65
• /
• pp.83-99
• /
• 2020

现代汉语中的"睡觉"来源于古汉语中的"睡觉", 但两者的词义完全相反, 構词法上也存在着差别。本文从历时角度看, "睡觉"词义演变的脉络, 并且探究"睡醒"义與"进入睡眠状态"义的渐进变化。古汉语中的"觉"和"睡觉"的最早词义为"寤(睡醒)"。大约中唐时期"睡醒"义的"觉"衍化出了作量词的"睡眠单位"义和作名词的"睡眠状态"义。而且具有"睡眠行为"的动宾式離合词"睡觉"的产生, 就是动词"睡"和名词"觉"重新组合的结果。表"寤"义的"觉"和从此义演变出来的表"睡眠单位"和"睡眠状态"之"觉"的读音, 原本都是"古孝切", 宋代为区别词义, ""寤"义的"觉"改读为"古岳切"。"睡觉"一词具有"睡醒"和"进入睡眠状态"两个义位, "睡醒"义的"睡觉"是一個由反义词素粘合而成的偏义複词, 其义偏在後, 它是直接用语法造词法所造成的词, 大约出现在东晋时代。"进入睡眠状态"义的"睡觉"是动宾離合词, 大约出现在宋代, 廣泛流行于明代以後。最後, "睡醒"一词的出现及使用频率的增加, 使"睡觉"一词只保留"进入睡眠状态"的单一意义。

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
• /
• 2004.05a
• /
• pp.198-203
• /
• 2004

This paper describes a real-time control architecture for DUSAUV (Dual Use Semi-Autonomous Underwater Vehicle), which has been developed at Korea Research Institute of Ships & Ocean Engineering (KRISO), KORDI, for being a test-bed oj development of technologies for underwater navigation and manipulator operation. DUSAUV has three built-in computers, seven thrusters for 6 degree of freedom motion control, one 4-function electric manipulator, one pan/tilt unit for camera, one ballasting motor, built-in power source, and various sensors such as IMU, DVL, sonar, and so on. A supervisor control system for GUI and manipulator operation is mounted on the surface vessel and communicates with vehicle through a fiber optic link. Furthermore, QNX, one of real-time operating system, is ported on the built-in control and navigation computers of vehicle for real-time control purpose, while MicroSoft OS product is ported on the supervisor system for GUI programming convenience. A hierarchical control architecture which consist of three layers (application layer, real-time layer, and physical layer) has been developed for efficient control system of above complex underwater robotic system. The experimental results with implementation of the layered control architecture for various motion control of DUSAUV in a basin of KRISO is also provided.

• 한국생물공학회:학술대회논문집
• /
• 2003.04a
• /
• pp.489-493
• /
• 2003

This study was to search antioxidant constituents of ethyl acetate extract from Stachys siebodlii MIQ. The test of nitrite scavenging abilities were performed on the extracts of methanol, hexane, chloroform, ethyl acetate, butanol, and water, Ethyl acetate extract, The most promising one was fractionated on a silical gel column using elution solvent(chloroform:methanol:water=70:30:5 lower phase) at a flow rate 1.0ml/min. UV-VIS spectral data of each fraction showed adsorption maxima in the range of $284{\sim}330nm$ which is the characteristic range of $210{\sim}290nm$ and $300{\sim}550nm$ phenolic compounds. These results suggested that Stachys siebodlii MIQ. shows natural antioxidant activity. The nitrite scavenging abilities reached the maxium at pH 1.2 and the ethyl acetate fraction of root showed stronger scavenging ability.

• Journal of Advanced Marine Engineering and Technology
• /
• v.37 no.6
• /
• pp.644-652
• /
• 2013

This paper describes the development and field experiments of Manta-type Unmanned Underwater Vehicle (UUV). Various simulations for Manta UUV are performed by using the nonlinear 6-DOF motion of equations. Through this simulation we verified the motion performances of Manta UUV. To acquire the blueprint of Manta UUV, it was designed with the simulation results. The Manta UUV uses a Doppler Velocity Log (DVL), gyrocompass, GPS, pressure sensor and other minor sensors, applied to measure the motion, position and path of Manta UUV. For its propulsion and changing a direction in the underwater, one vertical fin and four horizontal fins are installed at the hull of UUV. The Manta UUV system was verified with motion and autonomous navigation test at field.

• Journal of Ocean Engineering and Technology
• /
• v.21 no.2 s.75
• /
• pp.67-74
• /
• 2007

Maritime and Ocean Engineering Research Institute (MOERI), a branch of KORDI, has designed and manufactured a model of an autonomous underwater vehicle (AUV) named ISiMI (Integrated Submergible for Intelligent Mission Implementation). ISiMI is an AUV platform to satisfy the various needs of experimental test required for development of challenging technologies newly investigated in the field of underwater robot; control and navigational algorithms and software architectures. The main design goal of ISiMI AUV is downsizing which will reduce substantially the operating cost compared to other vehicles previously developed in KORDI such as VORAM or DUSAUV. As a result of design and manufacturing process, ISiMI is implemented to be 1.2 m in length, 0.17 m in diameter and weigh 20 kg in air. A series of tank test is conducted to verify the basic functions of ISiMI in the Ocean Engineering Basin of MOERI, which includes manual control with R/F link, auto depth, auto heading control and a final approach control for underwater docking. This paper describes the implementation of ISiMI system and the experimental results to verify the function of ISiMI as a test-bed AUV platform.