• Proceedings of the Korean Society of Computer Information Conference
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• 2019.01a
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• pp.105-106
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• 2019

본 논문에서는 무선 센서 네트워크(Wireless Sensor Network, WSN) 환경에 배치되어 물리적 데이터를 감지하는 각 센서들의 데이터를 수집을 위한 싱크(Sink)가 일정 주기로 이동 및 재배치되는 싱크 마이그레이션(Migration) 과정에 있어 다음 배치 위치를 효율적으로 선정하기 위해 클러스터 헤드(Cluster Head, CH)를 기준으로 영역 검색 단계를 추가하여 재배치 정확성 및 효율성 증대 기법을 제안한다. 본 논문에서는 WSN 환경을 바탕으로 싱크 재배치 과정에 해당 기법을 적용하여 시뮬레이션 하였으며, 해당 실험의 결과에 따르면 싱크 재배치의 정확성 및 효율성 증대로 전체 영역에 대한 고른 데이터 수집 및 소모 에너지 균형이 향상되었다.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.36 no.3
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• pp.289-295
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• 2012

In recent years, an increased amount of research has been carried out on mobile robots to improve the performance of service robots. Mobile robots maximize the mobility of service robots, thus allowing them to work in different areas. However, conventional service robots have their center of mass placed high above the ground, which may cause them to fall when moving at high speed. Furthermore, hub-type actuators, which are often used for mobile robots, are large and expensive. In this study, we propose a mobile robot with a hub-type actuator unit and a variable footprint mechanism. The proposed variable footprint mechanism greatly improves the stability and mobility of the robot, allowing it to move freely in a narrow space and carry out various tasks. The performance of the proposed robot is verified experimentally.

• Proceedings of the CALSEC Conference
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• 1997.11a
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• pp.199-205
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• 1997

국방 조달 본부 CALS 화 추진은 조달본부의 대 내외 유통 업무, 정보화 요구와 개선 요구사항으로부터 CALS에 의한 조달 정보화 추진을 위해 디지털화, 통합화, 전자적 협력화의 세 가지 전략에 따라 업무 및 체계의 개선목표를 달성하고, 업무 효율성 향상, 품질향상, 비용절감의 기대효과를 얻는 데 목적이 있다.(중략)

• Proceedings of the KIEE Conference
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• 2015.07a
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• pp.270-271
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• 2015

본 논문에서 제시하는 상태추정 알고리즘은 SVC(Static Var Compenstor) 시스템에 적용되어 시스템이 연계되는 계통의 모선전압, 전류, 역률, 플리커 성분과 같은 상태 변수들의 측정된 값을 이용하여 시스템을 운영하기 위한 정보로 활용된다. 토폴로지 프로세서 및 상태추정을 이용하면 SVC 시스템 제어의 속응성 향상 및 신뢰도 향상으로 시스템 운용의 효율성을 제고할 수 있다.

• 프린팅코리아
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• v.13 no.12
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• pp.92-93
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• 2014

일진 PMS(주)(대표이사 박경재)는 인쇄기 오퍼레이터의 인쇄기술 향상과 기계가동 및 생산 효율성 향상을 위해 매년 고모리 기술 교육 및 세미나를 무료로 개최하고 있다. 올해 세미나는 지난 11월 8일 오전 9시 30분부터 오후 6시 30분까지 파주출판단지내 아시아출판문화정보센터에서 진행됐다.

• Digital Contents
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• no.8 s.63
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• pp.26-31
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• 1998

지식관리시스템은 최근 들어 기업의 경쟁력을 향상시키는 새로운 개념으로 급격하게 부상하고 있다. 재무나 생산, 영업 등과 같은 정형화된 수치의 취합에서 벗어나 개인들이 업무를 추진하면서 쌓은 비정형화된 정보를 기업에서 활용해 효율성을 꾀한다는 지식관리시스템의 배경과 관련업계 동향에 대해 살펴봤다.

• Proceedings of the CALSEC Conference
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• 1999.11a
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• pp.432-445
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• 1999

조달본부의 대내외 유통 업무, 정보화 요구와 개선요구사항으로부터 CALS에 의한 조달 정보화 추진을 위해 전자적 협업, 디지털화, 통합의 세 가지 전략에 따라 업무 및 체계의 개선목표를 달성 업무 효율성 향상, 품질향상, 비용절감 등의 기대효과 (중략)

• Journal of Advanced Marine Engineering and Technology
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• v.37 no.8
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• pp.969-976
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• 2013

This study suggests the improvement of ROK Navy salvage and rescue diving system. ROK Navy system experiences characteristic restrictions for the environmental loading. These restrictions are known to deteriorate the efficiency of Navy salvage and rescue diving activity. In this study, the measurements were suggested to improve the efficiency. To achieve the goal, a comprehensive analysis is conducted using the published data including those of USN, NOAA and IANTD. Based on the analysis, suggestions were made. The technical diving techniques may be introduced to improve current ROK Navy diving system in limited areas. By adopting that technique, decompression procedures and underwater operation can be improved.

• Journal of the Korean Society of Marine Environment & Safety
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• v.27 no.7
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• pp.977-986
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• 2021

This study was processed to improve educational efficiency of the specialized fishing education program, which is conducted for safety of fishermen and protection of marine resources by analyzing the problems. The research method was carried out as a case study, which is one of the qualitative research methods. Participants selected recipient and related experts for the education. As a result three problems and six improvement plans are deduced; renewal of educational system, improvement upon quality of education, and systemization of training expert instructor were the problems, followed by improvements which are increase in instruction time, expansion of budget, diversification of education program, enlargement on practical training, systemized instructor training, and specialized education according to region. These results will play a key role in enhancing the educational efficiency of specialized fishing education and suppressing social problems caused by the expansion of the fishing industry.

• Smart Media Journal
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• v.11 no.9
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• pp.21-29
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• 2022

Ultra Violet(UV) is gradually being replaced with LED instead of general UV lamps. However, the light efficiency of UV LED is still lower than that of the general lamp, and the light efficiency is also low. Due to the current environment and technical problems of UV lamps, the LED replacements are gradually being made. In this study, a new package design and analysis were performed to increase the lifetime and performance of UV LEDs. A new packaging for UV LED were designed and implemented. The new packaging for UV LED was constructed to improve light efficiency. And the electrical and optical characteristics were analyzed respectively. To improve the optical efficiency in UV LED package, the Al has been used based on high reflectivity and applying the optimal lens focusing. Compared to the existing silver Ag, the light efficiency was improved by about 30% or more, and it was confirmed that the light output degradation characteristic was improved by about 10% in the newly applied optical device chip.