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염동회,심정기 목원대학교 자연과학연구소 1996 自然科學 硏究論文集 Vol.5 No.-
여섯종의 한국산 붓꽃과(Belamcanda chinensis, I. ensata, I. pseudacorus, I. koreana, I. setosa, I. tectorum)에 대한 세포분류학적 연구를 수행하였다. 연구된 붓꽃科(Iridaceae) 각 種의 체세포염색체의 수, 크기, 형태 및 핵형은 아래와 같다. Belamcanda chinensis, 2n=32=14L, +12M.+6S=2A^sm+2B^sm+2C^m+2D^m+2E^m+2F^sm+2G^m+2H^sm+2I^m+2J^m+2K^m+2L^m+2M^m+2N^m+2O^m+2P^m, I. ensata, 2n=24=12L.+12M.=2A^st+2B^st+2C^st+2D^sm+2E^sm+2F^sm+2G^sm+2H^m+2I^sm+2J^sm+2K^sm+2L^m, I. pseudacorus, 2n=34=10L.+20M.+4S.=2A^m+2B^m+2C^m+2D^m+2E^sm+2F^m+2G^sm+2H^sm+2I^sm+2J^sm+2K^sm+2L^m+2M^m+2N^m+2O+2P^m+2Q^m, I. koreana, 2n=34=16L.+12M.+4S.=2A^sm+2B^sm+2C^sm+2D^sm+2E^sm+2F^sm+2G^sm+2H^sm+2I^sm+2J^m+2K^m+2L^m+2M^m+2N^m+2O^m+2P^m+2Q^m+2R^m+2S^m, I. setosa, 2n=38=18L.+14M.+6S.=2A^sm+2B^m+2C^m+2D^m+2E^m+2F^sm+2G^m+2H^m+2I^sm+2J^m+2K^sm+2L^m+2M^m+2N^m+2O^m+2P^m+2Q^m+2R^m+2S^m, I. tectorum, 2n=32=16L.+10M.+6S.=2A^m+2B^sm+2C^m+2D^m+2E^m+2F^m+2G^m+2H^sm+2I^sm+2J^sm+2K^sm+2L^sm+2M^m+2N^m+2O^m+2P^m. 연구된 여섯종의 기본 염색체수는 I. ensata는 X=12, Belamcanda chinensis, I. koreana, 및 I. tectorum는 X=16, I. pseudacorus는 X=17이고 I. setosa는 X=19 이였다. 본 연구에서 검토된 모든 분류군의 염색체는 2배체로 나타났다. The cytotaxonomic studies on six species of Korean Iridaceae (Belamcanda chinensis, I. ensata, I. pseudacorus, I. koreana, I. setosa and I. tectorum) were carried out. The numbers, sizes, shapes and karyogypes of the somatic chromosome in each species of Iridaceae were compared. Chromosome numbers and karyogypes of the six species were as follows : Belamcanda chinensis, 2n=32=14L, +12M.+6S=2A^sm+2B^sm+2C^m+2D^m+2E^m+2F^sm+2G^m+2H^sm+2I^m+2J^m+2K^m+2L^m+2M^m+2N^m+2O^m+2P^m, I. ensata, 2n=24=12L.+12M.=2A^st+2B^st+2C^st+2D^sm+2E^sm+2F^sm+2G^sm+2H^m+2I^sm+2J^sm+2K^sm+2L^m, I. pseudacorus, 2n=34=10L.+20M.+4S.=2A^m+2B^m+2C^m+2D^m+2E^sm+2F^m+2G^sm+2H^sm+2I^sm+2J^sm+2K^sm+2L^m+2M^m+2N^m+2O+2P^m+2Q^m, I. koreana, 2n=34=16L.+12M.+4S.=2A^sm+2B^sm+2C^sm+2D^sm+2E^sm+2F^sm+2G^sm+2H^sm+2I^sm+2J^m+2K^m+2L^m+2M^m+2N^m+2O^m+2P^m+2Q^m+2R^m+2S^m, I. setosa, 2n=38=18L.+14M.+6S.=2A^sm+2B^m+2C^m+2D^m+2E^m+2F^sm+2G^m+2H^m+2I^sm+2J^m+2K^sm+2L^m+2M^m+2N^m+2O^m+2P^m+2Q^m+2R^m+2S^m, I. tectorum, 2n=32=16L.+10M.+6S.=2A^m+2B^sm+2C^m+2D^m+2E^m+2F^m+2G^m+2H^sm+2I^sm+2J^sm+2K^sm+2L^sm+2M^m+2N^m+2O^m+2P^m. The basic chomosome numbers (x) of six species were as follows : I. ensata, X=12; Belamcanda chinensis, I. koreana, and I. tectorum, X=16; I. pseudacorus, X=17 and I. setosa, X=19. All taxa studied here had diploid chromosomes.
가진입력에 의한 손떨림 보정용 이송장치의 둔화현상 방지대책
염동회,주영훈 제어로봇시스템학회 2009 제어로봇시스템학회 합동학술대회 논문집 Vol.2009 No.12
This article deals with an optical image stabilizer which moves an image sensor in the direction of cancelling the vibration caused by hand shaking to prevent a photographed image from blurring. The ball-guide way method adopted as a transfer device of the image sensor is easy to be manufactured because of its simple structure and is suitable to minimize the friction between mechanisms, but has weakness of a chance of physical defect such as groove and rising. In case that the movement of the transfer device equipped with the image sensor is blunted because a ball is stuck in defects of guide way, the performance of the image stabilizer falls down drastically. We propose a method to prevent the transfer device from blunting by applying artificial vibration. At this time, the artificial vibration should be designed under consideration of dynamic characteristics and specifications of the system to be discriminated from the vibration caused by hand shaking.
염동회(Dong-Hae Yeom),정현석(Hyun-Suk Jeong),주영훈(Young-Hoon Joo),박진배(Jin-Bae Park) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
본 논문은 불확실성을 가지는 선형시불변 시스템의 강인안정성을 보장하는 극점배치 기법을 다룬다. 불확실성과 이에 의해 요동하는 극점의 관계를 새롭게 도출하고, 이 결과를 바탕으로 불확실성을 가지는 시스템의 안정성을 판별하는 방법을 제안한다. 제안하는 판별법에서 불확실성에 의해 요동하는 극점의 범위는 주어진 불확실성의 크기, 시스템 행렬의 조건수, 그리고 공칭시스템의 극점이 분포하는 원반으로 표현된다. 기존의 조건수에 의존하는 방법과는 달리, 극점이 분포하는 원반을 이용하여 조건수에 비교적 덜 의존적인 방법을 제시하므로 지나치게 큰 궤환이득을 피할 수 있다.
가진입력에 의한 손떨림 보정용 이송장치의 둔화현상 방지대책
염동회(Dong-Hae Yeom) 제어로봇시스템학회 2009 제어·로봇·시스템학회 논문지 Vol.15 No.11
This article deals with an optical image stabilizer which moves an image sensor in the direction of cancelling the vibration caused by hand shaking to prevent a photographed image from blurring. The ball-guide way method adopted as a transfer device of the image sensor is easy to be manufactured because of its simple structure and is suitable to minimize the friction between mechanisms, but has weakness of a chance of physical defect such as groove and rising. In case that the movement of the transfer device equipped with the image sensor is blunted because a ball is stuck in defects of guide way, the performance of the image stabilizer falls down drastically. We propose a method to prevent the transfer device from blunting by applying artificial vibration. At this time, the artificial vibration should be designed under consideration of dynamic characteristics and specifications of the system to be discriminated from the vibration caused by hand shaking.
염동회(Dong Hae Yeom),김종선(Jong Sun Kim),주영훈(Young Hoon Joo) 한국지능시스템학회 2012 한국지능시스템학회논문지 Vol.22 No.2
본 논문은 무인 자율 주행 차량을 위한 안전한 등반 경로 계획을 다룬다. 기존의 경로 계획 기법과 달리, 안전성을 최우선 과제로 경로를 계획한다. 이를 위해 주어진 지형 정보로부터 위험 지역을 포함하는 전역 포텐셜 필드를 사용함으로써 위험 지역으로의 접근을 방지하고, 침식 연산을 이용한 중간 경우 지점 선정을 통해 가장 완만한 경사로를 계획하는 방법을 제안하다. 제안하는 방법은 요구되는 정보량 및 연산량을 줄일 수 있으며 인간의 직관과 유사한 등반 경로를 제공한다. The paper deals with a safe climbing path planning for unmanned automatics vehicles. Unlike the existing path planning schemes, the safety is the highest priority for our approach. To achieve this, the global potential field which includes a dangerous zone as well a given terrain information is generated, and the way-points are determined by using image processing such as the erosion operation. The proposed method can reduce the computation effort and the amount of information, and provide the safe climbing path which is similar to human"s intuition.
광 디스크 드라이브의 강인한 데이터-클럭 등화기 필터계수 선정
염동회(Dong-Hae Yeom),김진규(Jin-Kyu Kim),주영훈(Young-Hoon Joo) 대한전기학회 2010 전기학회논문지 Vol.59 No.4
The equalizer compensates a signal distorted by transmission lines and amplifying stages, so the signal can have uniform characteristics over all frequency range. The equalizer in ODD(Optical Disc Drive) improves the stability of the extracted clock from a received signal and the readability of an inserted disc by suppressing noise and ISI(Inter-Symbol Inference). The length of marks-spaces and track pitch on discs becomes shorter as the recording density of an optical media is higher, which causes noise and ISI. And, the sensitivity about the fluctuation of physical systems is higher as the optical devices become more complicate. This paper proposes a method to select the coefficient of built-in equalizer of ODD in order to maintain the quality of signals against noise and ISI caused by system fluctuation.