• 베이커리
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• 5호통권346호
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• pp.78-79
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• 1997

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 한국통신학회 1994년도 하계종합학술발표회 논문집
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• pp.255-258
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• 1994

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 한국항해항만학회 2013년도 추계학술대회
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• pp.115-116
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• 2013

최근 조선해양산업의 트렌드는 해양플랜트 육성과 친 환경 녹색선박과 에너지 절감기술이라는 두 가지 방향으로 진행되고 있다. 조선해양산업의 메가트랜드인 해양플랜트와 친환경 선박 기술력을 확보하고, 국가의 주력산업으로 세계적인 경쟁력을 지니기 위해서 가장 근본적으로 지원이 필요한 부분은 관련된 다양하고 양질의 정보를 시의 적절하게 산업의 주체들에게 제공해주어야 한다. 따라서 본 연구는 조선해양기자재 정보센터의 필요성을 바탕으로 정보센터가 어떠한 기능에 우선순위를 두어야 하는지 분석하는 것을 목적으로 한다. 이 연구의 분석 결과는 조선해양 정보센터 기능 및 조직체계에 반영될 수도 있고, 정보센터 설립의 타당성을 분석하는 의사결정의 방법으로 활용될 수 있을 것이다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 한국항해항만학회 2020년도 추계학술대회
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• pp.189-190
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• 2020

부산의 주요 핵심 산업인 항만물류산업의 경쟁력 강화는 지역경제 활성화의 필수 조건이며, 항만물류산업의 경쟁력을 강화하는데 있어 단순한 항만의 양적인 규모의 경쟁에서 질적 효율성의 문제로 전환되고 있습니다.····(중략)····.선용품 공급산업의 경쟁력 강화방안으로 해운산업, 항만산업, 물류산업, 제조업 등 산업간 정보교류를 효율적으로 활용 할 수 있는 블록체인 기반의 선용품공급업 세관신고 시스템 고도화 방안····(중략)····.블록체인 기술을 도입하여 분쟁해결 발생시 이에 대한 시간과 비용을 절약할 수 있도록 하여 글로벌시장에서의 경쟁력을 확보할 수 있도록 적극적인 도움을 줄 수 있을 것으로 기대된다.

• Journal of the Korean Geosynthetics Society
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• 제16권2호
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• pp.165-174
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• 2017

There are natural disasters caused by abnormal climate in the world. In particular, there are frequent disasters such as floods and landslides caused by rainfall in summer. Rainfall will have a major impact on the stability of a retaining wall. If drainage during rainfall activities within the retaining wall is not made properly, permeated water brings a significant increase in pore pressure inside of the backfill soil and reduces the shear strength of the soil. Therefore, research how to install the drainage layers to reduce the infiltrated water inside of the backfill soil is very necessary. In this study, we performed a numerical modeling to find the optimum installation conditions of the location and number of drainage layer related to stability of the reinforced retaining wall during rainfall installed geosynthetics.

• Journal of the Korean Geosynthetics Society
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• 제15권3호
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• pp.1-12
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• 2016

In this study, the impact of sand and weathered granite soil is analyzed by changing the internal temperature from $20^{\circ}C{\sim}70^{\circ}C$C by installing a heating coil inside the triaxial cell. To check the effect on weathered granite soil due to increase of temperature and number of heating-coiling cycles are analyzed by measuring the temperature by using thermometer installed inside the triaxial cell and due to that deviator stress also occurred during the consolidated undrained test. To analyze the effect of weathered granite soil with change of temperature during undrained testing. The deviator stress and pore pressure is measured. As a result, pore pressure increases and the deviator stress decreases with rise of temperature.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• 제19권6호
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• pp.109-116
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• 2005

Recently, images/videos have been preferred as the communication media because of their information-implication and easy recognizability. But the amount of their data is so large that it has been the major research area to compress their data. This paper is related to optimization in th image data format, which can make a great effect in performance of data compression and is based on the wavelet transform and JPEG2000. This paper established a criterion to decide the data format to be used in wavelet transform, which is on the bases of the data errors in frequency transform and quantization. This criterion has been used to extract the optimal data format experimentally. The result were(1, 9) of 10-bit fixed-point format for filter coefficients and (9, 7) of 16-bit fixed-point data dormat for wavelet coefficients and their optimality was confirmed.

• Journal of the Korean Geosynthetics Society
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• 제15권1호
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• pp.11-19
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• 2016

This paper presents the results of a scale model test to the effect of heat exchanger drainage method in retaining wall of weathered granite soil. Purpose to rise in the temperature of the heat wires inside the weathered granite soil is preventing the collapse of the retaining wall and drainage smoothly moved to the drainage layer. Especially using a spray gun to simulate the rainfall since the rainfall drainage work is important for the rainfall effect on soil, find the difference about displacement of the retaining wall, change of volume water content, drainage, earth pressure and change in the strain of the geosynthetic was effected to heat exchanger within the soil. The result from applying the heat exchanger method decreased the earth pressure and displacement of the wall and increased drainage of water.

• Journal of the Institute of Electronics Engineers of Korea TE
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• 제42권4호
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• pp.7-14
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• 2005

Recently, images/videos have been preferred as the communication media because of their information-implication and easy recognizability. But the amount of their data is so large that it has been the major research area to compress their data. This paper is related to optimization in the image data format which can make a great effect in performance of data compression and is based on the wavelet transform and JPEG2000. This paper established a criterion to decide the data format to he used in wavelet transform which is on the bases of the data errors in frequency transform and quantization. This criterion has been used to extract the optimal data format experimentally. The result were (1, 9) of 10-bit fixed-point format for filter coefficients and (9, 7) of 16-bit fixed-point data format for wavelet coefficients and their optimality was confirmed.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• 제39권10호
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• pp.987-994
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• 2011

This paper presents An efficient method of antenna placement considering EMI(Electromagnetic Interference) between equipments which are mounted on the UAV(Unmanned Air Vehicle). The analysis is accomplished for voice communication radio, control datalink, TCAS(Traffic Alert Collision & Avoidance System) and GPS(Global Positioning System) which are vulnerable to EMI because the frequencies are close to each other. There are two steps for analysis procedure : The first one is selecting antenna position on the UAV by monitoring return loss and pattern variation of each antenna. The second one is analyzing EMI via antennas between equipments. In the EMI analysis, spurious level of each transmitter, coupling level between antennas and system noise property are considered. This procedure can be used to predict EMI between equipments in development stage.