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조영춘(Y.C. Cho),남해곤(H.K. Nam),이광식(K.S. Lee),윤성훈(S.H. Yoon) 한국태양에너지학회 1995 한국태양에너지학회 학술대회논문집 Vol.- No.-
100 ㎿급 유류연소 드럼형 열병합발전소의 주증기온도 제어를 위한 비선형 process model based control (PMBC)을 개발하고 그 성능을 PID 알고리즘과 비교하였다. 비선형 PMBC에서는 프로세스의 메캐니즘을 비교적 충실히 반영하는 모델이 필요한데, 사용된 모델은 first principle approach를 사용하여 개발된 것으로 제어기 성능 평가와 설계에 적합한 정교한 것이다.<br/> 비선형 PMBC는 비선형 피드백, feedforward, decoupling을 제공하고 분산제어에 적합하면서 모델링 오차에 민감하지 않은 장점이 있다. PMBC와 PID 제어의 성능을 부하증가와 연료의 열량변화등의 외란에 비교한 결과, PMBC가 PID에 비하여 속응성, 절대오차 적분치, 제어노력등에서 월등하게 우수한 것을 확인하였다.
돼지의 주요 경제형질에 대한 유전모수 추정에 관한 연구
조영춘,김계웅,박홍양 ( Y . C . Cho,G . W . Kim,H . Y . Park ) 한국축산학회 1998 한국축산학회지 Vol.40 No.5
This study was carried out to obtain basic data for breeding plan in swine. Genetic parameters for economic traits of swine were estimated on the basis of the data from 6,948 pigs of Duroc, Landrace and Large White tested at a swine farm in Young Kwang County, Junnam Province from 1991 to 1997. The heritabilities of average daily gain, age at 90㎏, backfat thickness, body length and body height were 0.26, 0.37, 0.53, 0.40 and 0.40, respectively. The heritabilities of average daily gain in Duroc, Landrace and Large White were 0.29, 0.30 and 0.17, respectively. Those of age at 90㎏ in Duroc, Landrace and Large White were 0.45, 0.43 and 0.25, respectively. The backfat thickness heritabilities in the three breeds were 0.28, 0.53 and 0.54, respectively. T`he heritabilities estimated for body length and body height were 0.17 and 0.39 in Duroc, 0.47 and 0.50 in Landrace, 0.47 and 0.29 in Large White, respectively. The genetic and phenotypic wrrelations of average daily gain with age at 90㎏, estimated for Duroc, Landrace and Large White were -0.313 and -0.759, -0.784 and -0.783, -0.725 and -0.783, respectively. Those of body length with body height were 0.178 and 0.262, 0.514 and 0.294, 0.324 and 0.344, respectively. The correlations of breeding and phenotypic values in Duroc, Landrace and Large White were 0.593, 0.561 and 0.493 in average daily gain, 0.711, 0.730 and 0.552 in age at 90㎏, 0.708, 0.654 and 0.715 in backfat thickness, 0.558, 0.286 and 0.690 in body length, 0.716, 0.328 and 0.702 in body height, respectively.
김계웅(G . W . Kim),조영춘(Y . C . Cho),박홍양(H . Y . Park) 한국축산학회 1999 한국축산학회지 Vol.41 No.1
The effects of breed, sex, parity, farrowing year, and farrowing month on the major economic traits were investigated on 6,948 pigs of three breeds, Duroc, Landrace and Large White. Overall average daily gain at the age up to reaching 90㎏ of body weight was 829±1.30g. And overall mean age, backfat thickness, body length and height at 90㎏ of body weight were 154±0.14 days, 1.31±0.38㎝, 110±0.08㎝ and 62± 0.04 ㎝, respectively. The effects of breeds on major economical traits were significant statistically(P$lt; 0.05). Duroc showed the highest values of average daily gain and body height, and the shortest age at the 90㎏ of body weight. Meanwhile Landrace had the thinest backfat thickness and the longest body length. Sex, parity, furrowing year and month also significantly(P$lt; 0.05) influenced on the economical traits examined.