• 제목/요약/키워드: Jong-Hwa AN

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한(韓)·일(日)어업협정(漁業協定) 개정문제(改定問題)에 관한 기초연구(基礎硏究) (A Fundamental Study on the Amendment of Korean-Japanese Fisheries Agreement)

  • 최종화
    • 수산해양교육연구
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    • 제9권2호
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    • pp.99-120
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    • 1997
  • The official talks on the amendment of the Korean - Japanese Fisheries Agreement which was concluded in 1965 are under way since 1996. The convention area of the existing fisheries agreement is the high sea, but it should be changed to the exclusive economic zone(EEZ) for the newly amended fisheries agreement. Accordingly, the fundamental policies to be embodied within the amended fisheries agreement are summarized as follows : 1. One of the basic doctrine of the new agreement should be the formulation of a device of international cooperation for the fishery development as well as the conservation and management of the fishery resources. 2. The preparation of the future-oriented international relationship which reflects the specific character of the fishery relationship between both countries. 3. The existing fishery results of both parties should be protected on the ground of the reciprocity principle. 4. Both parties should reach an agreement upon the joint conservation and management measures for the transboundary fishery resources. 5. In consideration of the difficulty of EEZ delimitation between both countries, a provisional fisheries agreement can be an alternative measure.

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유륜에 발생한 투명세포극세포종 (Clear cell acanthoma on areola)

  • 김병수;김연웅;최진화;송승현;신동훈;최종수
    • Journal of Yeungnam Medical Science
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    • 제32권2호
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    • pp.111-113
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    • 2015
  • Clear cell acanthoma (CCA) is an asymptomatic benign lesion of unknown origin that typically appears as a brownish, dome-shaped papule on the leg. It has an unusual clinical feature in that it appears as chronic eczema, Bowen disease, or Paget disease on the areola. Its histopathologic findings are well-demarcated psoriasiform acanthosis with pale keratinocytes (clear cells) that are rich in intracellular glycogen, which stain positively with Periodic acid-Shiff. We report herein on a young female patient with CCA on the areolar areas.

하이솔리드 도료용 고 고형분인 아크릴수지의 합성에 관한 연구 (Synthesis of Acrylic Resins with High-Solids Contents for HS Coatings)

  • 양인모;우종표;박홍수;김성길
    • 한국응용과학기술학회지
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    • 제17권4호
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    • pp.233-239
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    • 2000
  • To prepare an environmental friendly high-solid coatings an acrylic resin containing 80% of solid content was synthesized by addition polymerization of caprolactone acrylate, n-butyl acrylate, ethyl methacrylate, and 2-hydroxyethyl methacrylate. The conversion was $78{\sim}93%$ and the prepared resin's physical properties are as follows: viscosity, $212{\sim}3424cps: $M_{n}$ $1740{\sim}2400$. There was a trend that viscosity and molecular weight of the resin increased with Tg, but no direct proportionality was observed.

저장탄약신뢰성평가의 비기능시험 업무프로세스 개선을 이한 6시그마 적용 사례 연구 (A Case Study of Six Sigma for Improving Non-Function Test Process in the Ammunition Stockpile Reliability Program)

  • 윤근식;김용화;봉하규;이종찬
    • 품질경영학회지
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    • 제34권4호
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    • pp.13-21
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    • 2006
  • This paper includes an example of applying Six Sigma to Non-function test process to improve the efficiency and reliability of the Ammunition Stockpile Reliability Program (ASRP). By applying the DMAIC which is one of the Six sigma methods. we found out the vital few and as an improved version : effective redesign of check-sheets, pre-examination of technology, on-the-scene support system. As a result, we could enhance the reliability and reduce manpower and additional expenses.

GENOTOXICITY STUDY OF SOPHORICOSIDE IN BACTERIAL AND MAMMALIAN CELL SYSTEM

  • Kim, Youn-Jung;Kim, Yun-Hwa;Park, Hyo-Joung;Gil, Ji-Suk;Kim, Young-Soo;Kim, Mi-Kyung;Lee, Seung-Ho;Jung, Sang-Hun;Park, Jong-Bum;Kim, Tae-Hwam;Ryu, Jae-Chun
    • 한국독성학회:학술대회논문집
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    • 한국독성학회 2001년도 International Symposium on Dietary and Medicinal Antimutgens and Anticarcinogens
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    • pp.182-182
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    • 2001
  • Sophoricoside was isolated as the inhibitor of IL-5 bioactivity from Sophora japonica (Leguminosae). It has been reported to have an anti-inflammatory effect on rat paw edema model. To develope as an anti-allergic drug, genotoxicity of sophoricoside was investigated in bacterial and mammalian cell system such as Ames bacterial test, chromosomal aberration assay and single cell gel electrophoresis (Comet) assay.(omitted)

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미세 다공판을 이용한 환기팬 시스템의 소음저감 (Noise Reduction of a Ventilating Fan System using Micro-Perforated Panel)

  • 이종석;송화영;이동훈;권혁정;김동윤
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2006년도 춘계학술대회논문집
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    • pp.1209-1211
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    • 2006
  • This paper introduces an experimental study for the noise reduction of a ventilating fan system. For the purpose of noise reduction, conventionally an absorptive duct silencer filled with a glass fiber has been utilized. However, a glass fiber has some disadvantages like hygiene and secondary pollution problems. In order to overcome these problems, in this paper, a perforated duct silencer has been applied to the ventilating fan system. For the designing of a perforated duct silencer, the transmission losses for various perforated panel systems are measured and compared with its noise reduction performance.

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좌표 변환을 이용한 확장 칼만 필터의 구조적 개선 (Structural Improvement of Extended Kalman Filter using Coordinate Transformation)

  • 윤강섭;김종화;황창선;이만형
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1988년도 전기.전자공학 학술대회 논문집
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    • pp.905-908
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    • 1988
  • In recent, Kalman filter technique has been much used as one of technique for tracking of the moving target. But some problem are still remained to be resolved. For example, when Kalman filter technique is applied to nonlinear system, the technique is nonoptimal estimator. Therefore, extended Kalman filter is proposed to reduce modeling error for nonlinear system. In this study, an extended Kalman filter in Cartesian coordinates is described for moving target, when the radar sensor measures range, azimuth and elevation angle in polar coordinates. And an approximate gain computation algorithm is proposed. In this approach, Kalman gains are computed for three uncoupled filter and multiplied by a Jacobian transformation determined from the measured target position and orientation.

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바이모달 트램 구동축 서브프레임에 적용된 용접 사각관의 굽힘 특성 평가 (An Evaluation of Bending Performance of Welded Square Tube Structures for Drive Shaft Sub Frame of BIMODAL Tram)

  • 고희영;신광복;이종화;김한수
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2008년도 춘계학술대회 논문집
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    • pp.2200-2206
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    • 2008
  • This paper describes the results of experiments on the bending behavior of welded square tube structures for drive shaft sub frame of BIMODAL Tram. The used specimens to test were two different type made of ATOS60 and ST52-3. The square tube made of ST52-3 is the non-welded structure, while the square tube made of ATOS60 is the welded structure. The welded square tube made of ATOS60 will be applied for drive shaft sub frame of BIMODAL Tram. This welded square tube could reduce the manufacturing cost in comparison of non-welded square tube. The results showed that the bending performance of welded square tube made of ATOS60 was proven, and the bending behavior was in an good agreement with that of nonlinear finite element analysis.

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Trimerization of Isobutene over Solid Acid Catalysts: Comparison between Cation-exchange Resin and Zeolite Catalysts

  • Yoon, Ji-Woong;Jhung, Sung-Hwa;Chang, Jong-San
    • Bulletin of the Korean Chemical Society
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    • 제29권2호
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    • pp.339-341
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    • 2008
  • Catalytic trimerization of isobutene to produce triisobutenes has been performed over cation-exchange resin and zeolite catalysts. Resin catalysts have the advantage of long lifetime and high trimers selectivity even though the regeneration of an aged catalyst is not satisfactory. On the contrary, zeolite catalysts can be regenerated facilely by simple calcination in air even though the lifetime is short and trimers selectivity is low probably due to small pore size and strong acidity, respectively. It is, therefore highly desirable to develop an inorganic acid catalyst with macro- or meso-pores to show catalytic performances similar or superior to those of macroporous resin catalysts.

횡하중 분배방법을 이용한 교량구조물의 비탄성 변위응답 평가 (Evaluation of Inelastic Displacement Response of Bridge Structures Using Lateral Load Distributions)

  • 송종걸;남왕현;정영화
    • 산업기술연구
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    • 제25권A호
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    • pp.15-22
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    • 2005
  • In order to evaluate seismic performance of multi-degree-of-freedom bridge structure, moderate lateral load distribution methods using the pushover analysis were developed by many researchers. One of important variables to improve an accuracy of pushover analysis is lateral load distribution. In this study, pushover analyses were performed using the five types of lateral load distribution and seismic performances were evaluated by capacity spectrum method (CSM). To verify an accuracy of suggested lateral load distribution, the maximum displacement estimates by the CSM were compared to those by inelastic time history analysis.

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