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홍세진(Sae Jin Hong),김병섭(Byung-Sup Kim),김병삼(Byeong-Sam Kim),엄향란(Hyang Lan Eum) (사)한국생물환경조절학회 2018 생물환경조절학회지 Vol.27 No.2
배추를 저장하는 동안 품질을 유지하기 위한 방안으로 1-methylcyclopropene(1-MCP) 처리효과를 확인하였다. 수확된 배추는 즉시 실험실로 옮겨와 4개의 그룹(차압예냉 (forced-air cooling, FAC) 처리구, FAC + 0.03mm LLDPE film(Liner) 처리구, FAC + 2μL·L<SUP>-1</SUP> 1-MCP(1-MCP) 처리구, FAC + 1-MCP + Liner 처리구)으로 분류하여 각각의 처리를 실시한 후 2℃, 95% RH 저온에서 저장하였다. 저장중 품질변화는 무게 감모율, 가용성 고형물 함량, 경도, 그리고 색도(CIE L<SUP>*</SUP>, a<SUP></SUP>ㅇ, bㅇ, chroma, hue angle)를 통해 확인하였다. 저장기간 동안 각 실험구의 감모율은 Liner 처리에 의해서 감소하였다. 저장기간 6주가 경과되면 FAC + 1-MCP + Liner 처리구는 12.5%의 감모율을 보이면서 다른 처리구들에 비해서 감모율을 최소화하였다. 가용성 고형물의 함량은 수확 시 2.5<SUP>o</SUP>Brix였으며, 저장기간이 3주 경과되면서 FAC+ 1-MCP + Liner 처리구에서 수확 시의 값이 유지된 반면, 다른 처리구 들은 증가하였다. 배추의 경도는 수확 직후 24.0N 이었으며, FAC + 1-MCP + Liner 처리구에서 저장 6주 경과 후 22.6N으로 수확 당시의 경도가 유지되는 경향을 보였다. 저장 기간 동안 배춧잎의 색 변화는 CIE a<SUP>*</SUP>와 hue angle 값으로 확인할 수 있으며, 1-MCP 만을 처리할 경우에는 색도 변화에 영향을 미치지 않는 반면 1-MCP를 처리한 다음 Liner 포장을 실시하면 CIE a<SUP>*</SUP>와 hue angle의 변화를 최소화 시키면서 수확 당시의 색도를 유지시킬 수 있었다. 이상의 결과에서 1-MCP 처리는 배추 력광 품종 저장에는 효과가 미비하나, Liner와 함께 처리할 경우 6주까지 품질유지가 가능하였다. The effect of 1-methylcyclopropene (1-MCP) in the storability of kimchi cabbage at cold storage condition was investigated. Kimchi cabbage (Brassica campestris L. cv Ryouckgwang) was divided four groups, forced air cooling (FAC), FAC + 0.03 mm linear low density polyethylene liner (Liner), FAC + 2 μL·L<SUP>-1</SUP> 1-MCP (1-MCP), and FAC + 1-MCP + Liner. After each treatment kimchi cabbage was stored at 2℃, 95% RH. Quality parameters were weight loss, soluble solids content (SSC), firmness, and color (CIE L<SUP>*</SUP>, a<SUP>*</SUP>, b<SUP>*</SUP>, chroma, hue angle). Weight loss during storage was showed significant difference by Liner treatment. In particular FAC + 1-MCP + Liner treatment showed 12.5% reduction after 6 weeks of storage period and minimized the weight loss rate compared to other treatments. SSC of kimchi cabbage was 2.5 oBrix at harvest and FAC + 1-MCP + Liner treatment maintained the SSC until 3 weeks, while in other treatments gradually were increased. The firmness of kimchi cabbage was 24.0 N immediately after harvest and the firmness at harvest time tended to be maintained at 22.6 N after 6 weeks of storage in FAC + 1-MCP + Liner treatment. During the storage period, the color change of the kimchi cabbage leaf can be confirmed by CIE a <SUP>*</SUP> and hue angle value. 1-MCP treatment alone did not affect the color change, however 1- MCP + Liner treatment was able to maintain the chromaticity at harvest time while minimizing the change of CIE a <SUP>*</SUP> and hue angle. These results suggest that 1-MCP treatment is not effective for the storage of kimchi cabbage but can be maintained for up to 6 weeks when treated with Liner.
최소의 결합 뉴런을 가지는 새로운 함수적 링크 네트워크
김병섭(Byung-Sup Kim),김상희(Sang-Hee Kim),고보연(Bo-Yeon Koh) 한국정보과학회 1995 정보과학회논문지(B) Vol.22 No.9
선형 식별자로서는 2개의 영역으로 분리할 수 없는 패턴이 다수 존재하고 있다. 선형분리 불가능 패턴의 좋은 예로 X-OR와 같은 패턴을 들 수가 있다.이러한 문제를 해결하기 위해서 2가지 접근 방법이 연구되어 왔다. 첫번째 방법은 다층구조 퍼셉트론 방식을 이용하여 상하로 층의 구조를 확장하는 방법이고, 또 한가지 방법은 입력층의 좌우에 새로운 뉴런을 첨가하는 함수적 링크 네트워크(FUN : FUnctional-link Network)방법이다. 본 논문에서는 패턴을 분리하기 위하여 기존의 함수적 링크 네트워크 개념을 확장시킨 MIFUN(MInimal FUN)방법을 제안하였다. MIFUN은 주어진 패턴을 선형 분리할수 있으며 또한 함수적 링크 네트워크를 사용할 때 추가로 필요한 뉴런의 수를 대폭 감소시켜 준다. MIFUN은 은닉층을 고려하지 않는 일반화된 델타 규칙(delta rule)에 의해 학습된다. MIFUN의 모의실험 결과 학습 속도에 있어서는 기존의 두 방법(다층구조 퍼셉트론, FUN)과 비교하여 볼 때 대단히 좋은 성능을 보였다. 그러나 MIFUN의 최소 결합 뉴런수에 대한 이론적인 증명은 추후 연구과제로 남겨 둔다. There are many set of patterns which can not be separated into two region spaces by linear discriminator. The set of X-OR patterns shows a good example in discrimination of non-separable patterns. To solve this problem, two approaches have been studied. One is to expand layers, which is multi-layer perceptron method, and the other is to add neurons in input layer, which is FUN(FUnctionaI-link Net) method. In this paper. we propose MIFUN(MInimal FUN) method to separate a pattern set, which enhances the FUN. MIFUN is a single layer neural net which can linearly separates given patterns and also reduces the overhead of supplementary neurons in FUN. MIFUN is trained by generalized delta rule omitting hidden layers. Simulation result shows good performance(in learning speed) of MIFUN compared to existing two(multi-layer perceptron, FUN) methods. Theoretical proof for minimal number of neurons of MIFUN. however, remains to be studied.
강원 지역에서 분리한 감자역병균(Phytophthora infestans)의 교배형(mating type) 및 metalaxyl 저항성
김병섭(Byung-Sup Kim),최진희(Jin-Hoe Choi),전환홍(Whan Hong Chun),류경열(Kyoung-Yul Ryu),함영일(Young-Il Hahm),이윤수(Youn-Su Lee) 한국농약과학회 2000 농약과학회지 Vol.4 No.1
Isolates of Phytophthora infestans obtained from several locations of Kangwon area in 1998 and 1999 were examined on mating types and sensitivity to metalaxyl. Both A1 and A2 mating type isolates were isolated in 1998 and 1999. The majority of the P. infestans isolates were A1 mating type. About 64.3% of the isolates collected in 1998 and 99.1 % in 1999 were determined as A1 mating type. Sensitivity of the P. infestans to metalaxyl was examined by measuring mycelial growth on V8 juice agar amended with 10 ㎍/mL matalaxyl. About 44.6% of the isolates examined in 1988 were resistant to metalaxyl, 55.4% of the isolates were intermediate resistant, but sensitive isolate was not isolated. However, 10.5% of the isolates examined in 1999 were sensitive, 88.6% of the isolates were intermediate resistant, and 0.9% of the isolates were resistant to metalaxyl. This studies indicate that A1 mating type is displacing A2 mating type and metalaxyl sensitivity of the P. infestans isolates of Kangwon area is increasing. This result is quite different from trends of early in 1990s.
대관령 고령지 백합 역병균(Phytophthora cactorum)의 동정 및 살균제에 대한 반응
김병섭(Byung-Sup Kim),안종웅(Jong-Woong Ahn) 한국농약과학회 2002 농약과학회지 Vol.6 No.1
A very destructive lily disease was occurred at Daekwallyong alpine areas in 1999. We have performed experiments to identify the causal pathogen of lily disease and to find a way to control the disease chemically. Twelve fungal isolates from the infected lily were identified as Phytophthora cactorum. Mycelial growth of all isolates were completely inhibited on potato dextrose agar with 10 ㎍/mL metalaxyl. Among 11 fungicides tested, 10 ㎍/mL of dimethomorph, ethaboxam, and oxadixyl inhibited mycelial growth of P. cactorum. PC-1. Therefore, spray of phenylamide fungicides such as metalaxyl and other commercial fungicides should be a effective way to control the Phytophthora blight of lily.
살균제 저항성 백합 잎마름병균(Botrytis elliptica)의 발생과 변화
김병섭(Byung-Sup Kim),전환홍(Hwan Hong Chun),황영아(Young A Hwang) 한국농약과학회 2001 농약과학회지 Vol.5 No.1
Five hundred sixteen isolates of Botrytis elliptica were isolated from infected leaves of Lilium longiflorum from Kangwon alpine areas in Korea during the seasons from 1998 to 2000 and resistance of these isolates against some fungicides were examined. The isolation frequency of phenotypes resistant to benomyl, procymidene, and diethofencarb were 90.1, 32.4, and 40.9%, respectively. The isolates were divided into six phenotypic groups; RSS, RRS, SSR, SRR RSR and RRR, representing sensitive (S) or resistant (R) to benzimidazole, dicarboximide, and N-phenylcarbamate fungicides in order. The percentage of six phenotypes were 40.7, 8.5, 7.2, 2.7, 19.8, and 21.1%, respectively. The RSS phenotype was the most frequently isolated, and the SRR consisted of the extremely minor populations. In comparison studies on the overwintering ability of each phenotype in relation to the others, the most frequently isolated RSS and SSR had the higher fitness ability than the less frequently isolated RSR, SRR, and RRR. Recently, population increase of the RSR and RRR phenotypes may have resulted from the increased applications of the mixture of carbendazim and diethofencarb to control benzimidazole-resistant B. elliptica since 1998. The results of this study indicate that careful application of the fungicides is necessary to achieve effective control of leaf blight on lily in Korea.
김병섭(Byung-Sup Kim),전주식(Chu-Shik Jhon) 한국정보과학회 1997 한국정보과학회 학술발표논문집 Vol.24 No.2Ⅱ
본 논문은 군용의 100 단어를 추출하여 이로부터 화자종속형 및 화자독립형의 음성인식기를 구현하여 성능을 비교 분석하였다. 기본 인식 단위는 한국어의 특성에 맞는 음절을 이용하여 단어의 확장성을 용이하도록 하였고 인식 모델은 HMM을 사용하였다. 학습 방법으로는 기존의 자동 학습 방법인 segmental K-means방법에 인식률을 높이기 위해 CT(Corrective Training) 방법을 도입하였다. 화자의 독립성을 완전하게 보장하기 위해서는 많은 사람으로부터 데이타를 획득하여 학습하여야 하지만, 본 논문에서는 13명의 남성 화자를 사용하였다.