• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.11
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• pp.2292-2300
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• 2011

Exact and rapid acquirement of ocean environment information is going to become more of an indispensable source of naval operations. Ocean surface measurements using High Frequency (HF) radar, which covers about 10-220km and has spatial resolution of 0.3-12km, have being operated in our country. It remotely observe and transmit realtime sea surface currents and waves. In the near future, the HF radar systems will be established along the whole coastal area. A performance of network of HF radar will support various marine and naval activities. Operational uses of HF radar for enhancing naval operation ability are suggested.

• Journal of the military operations research society of Korea
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• v.36 no.3
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• pp.135-145
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• 2010

The submarine is very threatening and secretive weapon system that achieves missions under the sea. However, the submarine is faced with danger that can be attacked from the enemy when is detected by sensor or rose to the surface. This study will be planned optimal path to maximize the survival rate that considers submarine navigation capability in underwater and search activity of hostile warships. A mathematical programming model and a heuristic algorithm will be suggested in this study. The mathematical programming model is verified by using ILOG CPLEX. The submarine path, unit time(distance) of navigation, survival rate, and computation time is computed by using a heuristic algorithm.

• Journal of The Korean Association of Information Education
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• v.14 no.2
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• pp.209-218
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• 2010

Robot Curriculum based education in Insects Robot help elementary school students better understand how a robot works. This robot curriculum is aimed at elementary school students in fifth grade. This study progressed with LEGO(R) MINDSTORMS(R) NXT, departed 6 groups, reached the insect's movement, designed robot like insects. This curriculum enhanced discussion prowess and improved the ability of building robot. During this study, most of the students were attracted to the action of the robot-like insect's movement.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.1
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• pp.64-69
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• 2008

In order that a mobile robot can perform tasks in unknown environment localization of a mobile robot is essential task. In this paper, a new localization method for a mobile robot using an active landmark is proposed, which is very simple to implement. The landmark has a LED which can be controlled by a mobile robot via wireless communication. CCD camera gets two images of the landmark, one of which is with LED off and the other is with LED on. Because the landmark can be detected by using the difference image of the two images, detection time can be minimized. By using the characteristic points of the landmark, localization can be performed simply. A series of experiments are performed to evaluate the proposed method and the experimental results show that the proposed method can be applicable to the localization of a mobile robot.

• The Journal of the Korea Contents Association
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• v.16 no.7
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• pp.368-381
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• 2016

Purpose: The purpose of this study was to describe the experience of the role conflict among nurses in long-term care hospitals. Method: Data were collected through in-depth interviews with nine nurses in long-term care hospitals. Colaizzi's phenomenological method was used for data analysis. Result: In this study, five categories and twelve theme clusters were generated. The five categories consisted of 'Heavy workload,' 'Nursing job delegation of unclear regulations,' 'Unprotected doctor's job performance,' 'Non-systematic nursing assistants management' and 'Limit of competency.' Conclusion: These results will contribute to the role establishment of nurse in long-term care hospitals and the qualitative improvement of work by providing the grounds for the strategy development which improve working environment and job satisfaction of nurses in long-term care hospitals apposite to the case of Korea.

• Journal of the military operations research society of Korea
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• v.33 no.2
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• pp.1-15
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• 2007

Aircraft operation doesn't consider the fact which can became obstacles. Forecasting, Preparing and Planning can make effective aircraft operation. This study is the find out the method of the effective Aircraft military power management. The force try to analysis the obstancles, aircraft operation ability and prepared military power. This study was analysis by ARENA 10.0. The obstacles consider to four category; weather, CBR warfare. aircraft accident and battle damage. And This study conduct the sensibility which can influence the aircraft operation.

• Proceedings of the Korean Society of Computer Information Conference
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• 2016.01a
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• pp.177-178
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• 2016

사회 패러다임의 변화는 교육 패러다임의 변화를 요구하며, 교육 패러다임의 변화는 교사의 역할도 함께 변화할 것을 요구한다. 현대 사회는 많은 지식을 습득한 인재를 양성하는 것보다, 지식을 습득하는 방법과 습득한 지식을 활용하여 문제를 효과적으로 해결하는 인재를 양성할 것을 요구하고 있다. 따라서 교사는 현대 사회가 요구하는 학습자를 양성하기 위하여 지식 전달자의 역할에서 문제 해결자를 양성하는 역할로 탈바꿈해야 한다. 이를 위해서는 교사는 학습자가 교과에서 반드시 학습해야 하는 개념과 원리를 깊이 있게 이해하고 이를 활용하여 문제를 해결할 수 있도록 안내하는 역할을 해야 한다. 이러한 점에서 볼 때 프로그래밍은 교사의 수업 전문성 향상을 위한 훌륭한 도구이다. 프로그래밍은 교사가 원하는 교수 학습 자료나 추상적인 내용을 시각적으로 확인하는 자료, 혹은 사람의 사고 능력으로 해결하기 어렵거나 시간이 오래 걸리는 문제들을 해결하는 자료 제작을 지원함으로써 학습자의 깊은 이해를 유도할 수 있다. 따라서 수업 전문성 향상을 위한 프로그래밍 교육 실천함으로써 교사가 사회에서 요구하는 인재를 양성하는 임무를 충실히 수행할 수 있도록 해야 할 필요가 있다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.10a
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• pp.341-348
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• 2011

Exact and rapid acquirement of ocean environment information is going to become more of an indispensable source of naval operations. Ocean surface measurements using High Frequency (HF) radar, which covers about 10-220km and has spatial resolution of 0.3-12km, have being operated in our country. It remotely observe and transmit realtime sea surface currents and waves. In the near future, the HF radar systems will be established along the whole coastal area. A performance of network of HF radar will support various marine and naval activities. Operational uses of HF radar for enhancing naval operation ability are suggested.

• Journal of the Society of Naval Architects of Korea
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• v.38 no.3
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• pp.107-116
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• 2001

Any small leakages in the submarines could lead to the serious consecutive damages since it operates under high water pressure. Such leakages including damages of pipe and hull itself eventually could incur humane casualties and loss of expensive properties as well as the loss of combat capabilities. In this paper, knowledge based decision system is developed. The domain knowledge is acquired from document of submarine design, design expertise and interview with operator. Damages of hull itself and pipes are treated and decision is recommended whether to stay in the sea or to be blowing, for instance.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.46 no.12
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• pp.1012-1020
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• 2018

In order to improve the capability of mission flight of tiltrotor UAV that has been developed by Korea Aerospace Research Institute, a simulation study on the formation flight of autonomous control 5 level has been performed. The formation flight is based on the centralized method with leader and follower airplanes. The formation flight controller was verified through numerical simulation with 3 followers and hardware-in-the loop simulation with 1 follower. This paper describes controller design methods, hardware-in-the-looped simulation test, and performance verification using simulation.