항공우주분야 원격측정기술 동향

김주년(Kim, Joo-Nyun),이상래(Lee, Sang-Rae),김성완(Kim, Sung-Wan),윤원주(Yun,Won-Ju),김석권(Kim, Seok-Kwon),노성민(Noh, Sung-Min),마근수(Ma, Keun-su) 한국항공우주연구원 2014 항공우주산업기술동향 Vol.12 No.1

항공우주분야의 원격측정시스템은 비행체의 내부 상태 및 비행정보를 지상으로 전송하는 역할을 하는 탑재부분과 지상에서 비행 데이터를 수신하여 처리하는 지상시스템으로 구성된다. 원격측정시스템을 통해 취득된 데이터는 모든 비행시험 및 임무 수행의 성공여부를 결정하는데 매우 중요한 역할을 한다. 본 논문에서는 항공우주분야 원격측정 기술의 기술동향에 관하여 기술하였는데 고전적 1세대 기술에서부터 최근의 3세대 기술에 이르기까지 기술경향을 기술하였다. 특히 최근 무인항공기 분야를 비롯한 항공분야 원격측정 데이터 전송율의 요구가 급격히 증대됨에 따라 고속 네트워크를 활용한 4세대 항공우주 원격측정기술의 표준화가 진행되고 있으며 본 논문에서는 이에 관한 기술 동향도 함께 기술하였다. Telemetry system aerospace industry consists of the on board section which gathers and transmits status of the aerospace vehicles and the ground section which receives and processes the telemetry data. Telemetry data acquired through the flight tests of all the mission can be used to determine the success or failure of the mission. In this paper, aerospace telemetry technology trend is described from the conventional first generation telemetry technology to the latest technology trends, the third generation technology. Since the aeronautical telemetry industry including the unmanned aircraft telemetry data rate increases rapidly, new telemetry system, the fourth generation telemetry technology, is underway to cope with the future telemetry mission using high speed Ethernet network. The trend of the fourth generation telemetry system is also described in this paper.

전술객체 위치 모의 및 추적을 위한 필터링 알고리즘 연구

김석권,진승리,손재원,박동조,Kim, Seok-Kwon,Jin, Seung-Ri,Son, Jae-Won,Park, Dong-Jo 한국시뮬레이션학회 2010 한국시뮬레이션학회 논문지 Vol.19 No.4

Positions of tactical objects are represented as Time, Space and Position Information(TSPI) in modeling and simulations(M&S). The format and required information record for TSPI is investigated by referring the TSPI object model of the Test and Training Enabling Architecture(TENA), which has been developed by the United States Department of Defense. The most sophisticated tactical data link, Link-16 has a Precise Participant Location and Information (PPLI) message. We study the data format for exchanging TSPI data based on the PPLI message. To evaluate and track positions of tactical objects, we consider the Kalman filter for linear systems, and the extended Kalman filter and the unscented Kalman filter for nonlinear systems. Based on motion equations of a ballistic missile, the tracking performance for the trajectory of the ballistic missile is simulated by the unscented Kalman filter.

Limited Dissection Face Lift with PDS Quilting Suture

김석권,김명훈,권용석,이근철,Kim, Seok-Kwun,Kim, Myung-Hoon,Kwon, Yong-Seok,Lee, Keun-Cheol Korean Society of Plastic and Reconstructive Surge 2010 Archives of Plastic Surgery Vol.37 No.6

Purpose: Facial rejuvenating surgery has become a challenge to most plastic surgeons. Patients are demanding fewer complications, a prompt recovery, and more natural results. Current trend of the face lift surgery has been developed into less invasive procedures. Every aging patient in Asia wants to look younger without obvious evidence of surgical correction. Methods: The authors performed the limited dissection face lift with PDS quilting suture on twenty five patients. These five quilting sutures consist of sutures at 1~2 cm posterior to the prominent point of zygoma to the periosteum of the zygomatic arch, at the lateral border of Bichat's fat pad area to the zygomatic arch, at the lateral border of the orbicularis oculi muscle to the deep temporal fascia, at the upper lateral border of the platysma to the periosteum of the mastoid, and at the anterior lower margin of the earlobe to the deep temporal fascia by quilting suture technique to achieve rejuvenation. Results: These procedures could produce a balanced volumetric rejuvenation. This method gave considerable benefit of stable and satisfactory results. It provides reduced operative time, well corrected nasolabial fold and neck wrinkle, and swift recovery with minimal complications. Conclusion: Although it could not replace the classic facelift, this technique can be recommended as an option for patients who do not present with advanced facial aging or not want a more extensive procedure.

STELLA-2 소듐 시험 시설 고온 배관 계통의 설계 및 건전성 평가

손석권(Seok-Kwon Son),이형연(Hyeong-Yeon Lee),주용선(Yong-Sun Ju),어재혁(JaeHyuk Eoh),김종범(Jong-Bum Kim),정지영(Ji-Young Jeong) 대한기계학회 2016 大韓機械學會論文集A Vol.40 No.9

본 연구에서는 한국원자력연구원이 개발 중인 소듐 열유동 종합효과 시험장치(STELLA-2)의 주요 배관 계통을 대상으로 고온 설계를 수행하고, 두 가지 설계기술기준에 따라 배관의 건전성 평가를 수행하였다. 배관 설계기술기준으로는 일반 압력배관에 관한 ASME B31.1과 프랑스의 원자력등급 배관 설계기술기준인 RCC-MRx RD-3600을 적용하였으며, 이들 기술기준의 보수성을 정량적으로 비교 및 분석하였다. STELLA-2 소듐시설에서는 모의 잔열제거계통(Model DHRS), 모의 중간열전달계통(Model IHTS) 및 펌프 모의계통(PSLS)에 배관이 설치되는데, 두 설계기술기준을 따라 이들 배관 계통에 대해 건전성 평가를 수행한 결과 설계 건전성이 확인되었으며, 설계 기술기준 간 비교분석 결과 유지하중에 대해서는 ASME B31.1이, 열하중에 대해서는 RCC-MRx RD-3600이 더 보수적인 것으로 평가되었다. In this study, elevated temperature design and integrity evaluation have been conducted using two different piping design codes for the high-temperature piping systems of sodium integral effect test loop for safety simulation and assessment(STELLA-2) being developed by KAERI(Korea Atomic Energy Research Institute). The design code of ASME B31.1 for power piping and French nuclear grade piping design guideline, RCC-MRx RD-3600 were applied, and conservatism of those codes was quantified based on the piping integrity evaluation results. The piping system of Model DHRS, Model IHTS and PSLS are to be installed in STELLA-2. The integrity evaluation results for the three piping systems according to the two design codes showed that integrity of the piping system was confirmed. As a code comparison result, ASME B31.1 was shown to be more conservative for sustained loads while RD-3600 was more conservative for thermal loads compared to B31.1.

식품 및 환경 , 기타 새로운 Bacillus thuringiensis NT0423 균주의 제제화

김호산,노종열,이대원,장진희,제연호,우수동,김주경,유용만,강석권 ( Ho San Kim,Jong Yul Roh,Dae Weon Lee,Jin Hee Chang,Yeon Ho Je,Soo Dong Woo,Ju Kyong Kim,Yong Man Yu,Seok Kwon Kang ) 한국미생물생명공학회 1998 한국미생물·생명공학회지 Vol.26 No.4

전술객체 위치 모의를 위한 데이터 융합 및 추적 회피 시뮬레이션

진승리,김석권,손재원,박동조,Jin, Seung-Ri,Kim, Seok-Kwon,Son, Jae-Won,Park, Dong-Jo 한국시뮬레이션학회 2010 한국시뮬레이션학회 논문지 Vol.19 No.4

The aim of the study on the tactical object representation techniques in synthetic environment is on acquiring fundamental techniques for detection and tracking of tactical objects, and evaluating the strategic situation in the virtual ground. In order to acquire these techniques, there need the tactical objects' position tracking and evaluation, and an inter-sharing technique between tactical models. In this paper, we study the algorithms on the sensor data fusion and coordinate conversion, proportional navigation guidance(PNG), and pursuit-evasion technique for engineering and higher level models. Additionally, we simulate the position evaluation of tractical objects using the pursuit and evasion maneuvers between a submarine and a torpedo.

The Anti-Inflammatory Effect of Pegmatite by in Vivo and in Vitro Study

이민혁,김석권,권용석,이장호,이근철,Lee, Min-Hyuk,Kim, Seok-Kwun,Kwon, Yong-Seok,Lee, Jang-Ho,Lee, Keun-Cheol Korean Society of Plastic and Reconstructive Surge 2010 Archives of Plastic Surgery Vol.37 No.1

Purpose: This work aimed to elucidate the anti-inflammatory effect of pegmatite in vitro and in vivo. Methods: Author evaluated the suppressive effects of pegmatite on lipopolysaccharide (LPS)-stimulated nitric oxide (NO) production, TNF-${\alpha}$ and IL-6 release in the RAW 264.7 murinemacrophages. Results: Treatment of RAW 264.7 cells with pegmatite significantly reduced LPS-stimulated NO production and inflammatory cytokine such as TNF-${\alpha}$ and IL-6 secretion in a concentration-dependent manner. Also pegmatite showed topical anti-inflammatory activity in the arachidonic acid (AA)-induced ear edema and acetic acid-induced increase in capillary permeability assessment in mice. It was also found that pegmatite (10 mg per ear in DW) inhibited arachidonic acid induced edema at 24 h more profoundly than 1 h by topical application. Furthermore, the vascular permeability increase induced by acetic acid was significantly reduced in mice that received pegmatite in 50 mg per mouse. Conclusion: Therefore the results of the present study suggest that pegmatite is a potent inhibitor of the LPS-induced NO and inflammatory cytokine in RAW 264.7 macrophages and showed anti-inflammatory activities in vivo animal model.

논문 : 활엽수 조림수종의 용기 종류에 따른 생장 특성

조민석 ( Min Seok Cho ),이수원 ( Soo Won Lee ),황재홍 ( Jae Hong Hwang ),김석권 ( Suk Kwon Kim ) 한국임학회 2012 한국산림과학회지 Vol.101 No.2

이 연구는 시설양묘과정에서 요구되는 활엽수 수종별 적정 용기의 용적 및 생육밀도를 구명하고자 수행하였다. 용기 20혈(150본/m2-400mL), 24혈(200본/m2-320mL), 35혈(260본/m2-240mL)에서 거제수나무, 백합나무, 물푸레나무, 들메나무, 느티나무 및 참느릅나무 6 수종의 근원경, 간장, 물질생산량, 묘목품질지수 및 뿌리밀도를 조사·분석하였다. 용기에 따른 근원경, 간장, 물질생산량, 묘목품질지수 및 뿌리밀도는 6 수종 모두 용기 용적이 크고, 생육밀도가 낮은 20혈 용기에서 가장 높았다. 그러나 물푸레나무는 20혈과 24혈, 느티나무는 24혈과 35혈, 거제수나무는 세 용기 모두에서 유의적 차이는 없었다. 느티나무를 제외한 실험 대상 5 수종 모두 근원경, 간장, 물질생산량이 용기 용적과는 정의 상관관계, 생육밀도와는 부의 상관관계를 보였다. 이 결과를 바탕으로 양묘-단계에서 백합나무, 들메나무, 참느릅나무는 20혈, 물푸레나무는 20혈 또는 24혈, 느티나무는 24혈 또는 35혈, 거제수나무는 35혈의 용기가 적정 용기 크기로 판단된다. 수종별 적정 용기의 사용은 우량 묘목 생산이 가능하면서 경제적으로도 비용을 절감시킬 것으로 기대된다. The purpose of this study was to evaluate the effects of container types on seedling growth of Betula costata, Liriodendron tulipifera, Fraxinus rhynchophylla, Fraxinus mandshurica, Zelkova serrata, and Ulmus parvifolia in the container nursery system. We used three container types [20 cavities (150 seedlings/m2-400mL), 24 cavities (200 seedlings/m2-320mL), and 35 cavities (260 seedlings/m2-240mL)] and measured root collar diameter (RCD), height, biomass, seedling quality index (SQI), and root density, The root collar diameter, height, biomass, SQI, and root density of seedlings were the highest at 20 cavities/tray in all six species because this container type has the largest volume and lowest seedling density. However, F. rhynchophylla growth at both 20 and 24 cavities/tray, Z. serrata growth at both 24 and 35 cavities/tray and B. costata growth at all sizes were not significantly different. As expected, container volume was positively correlated with RCD, height, and biomass of five species except for Z. serrata, but seedling density negatively did, Based on these results, 20 cavities/tray are optimal for L. tulipifera, F. mandshurica, and U. parvifolia, 20 or 24 cavities/tray for F. rhynchophylla, 24 or 35 cavities/tray for Z. serrata, and 35 cavities/tray for B. costata, respectively. Usage of optimal container will make us get good quality seedlings as well as reduction of production costs in the container nursery.

중소제조업의 체계적 문서화가 생산성에 미치는 영향에 대한 연구

정상홍 ( Sang Hong Jeong ),김석권 ( Seok Kwon Kim ) 산업진흥원 2016 산업진흥연구 Vol.1 No.2

본 연구는 중소제조업의 체계적 문서화가 생산성에 미치는 영향을 분석하였다. 연구결과 문서화 업무체계확립은 불량감소(p<.01)와 설비가동률 향상(p<.05)에 영향을 미쳤으며 문서화 교육훈련 정도는 불량감소(p<.05)와 생산성 향상(p<.01)에 유의한 영향을 미쳤다. 문서화 경험은 생산성 향상에 유의한 영향을 미치지는 못했다. 즉, 문서화업무체계가 높을수록 불량감소, 설비가동률 향상 정도가 높으며 문서화에 대한 교육훈련이 잘 되어 있을수록 불량감소, 생산성 향상의 긍정적 효과를 보이고 있어 중소제조업은 문서화의 경험적 측면에 의존하기 보다는 문서화 업무체계를 확립하고 교육훈련을 실시하여 생산성을 높이기 위한 노력이 필요한 것으로 나타났다. 본 연구는 중소제조업의 체계적 문서화가 생산성에 미치는 영향을 분석함으로써 불량감소, 생산성향상, 설비가동율 향상에 대한 문서화 요인의 중요도를 파악하고 품질관리 측면에서 문서화의 효과를 검증한 데 연구의 의의가 있다. This study analyzed the effect of small manufacturing firms’systematic documentation on productivity. The study results showed that establishment of work system documentation significanlty affectd defect decrease(p<.05) and production efficiency(p<.01), but ducumentation experience didn’t significantly affected productivity improvement. So, it is suggested that firms should establish documentated work system and conduct education & training rather than depending on experiential aspect to improve productivity. This study provided implications for checking importance of documentation factor on productivity improvement and verifying the effect of documentation in quality management aspect.

Construction of shuttle vectors expressing the cry11Aa gene and their mosquitocidal activity

Dae-Weon Lee(이대원),Ho-San Kim(김호산),Yeon-Ho Je(제연호),Joo-Up Kim(김주읍),Hyo-Sok Yu(유효석),Seok-Kwon Kang(강석권) 한국농약과학회 1998 농약과학회지 Vol.2 No.1