한우의 체중과 체척치에 대한 일반능력

양영훈,오봉국,이문연,이득환 ( Y . H . Yang,B . K . Ohh,M . Y . Lee,D . H . Lee ) 한국축산학회 1990 한국축산학회지 Vol.32 No.11

The purpose of this paper is to investigate the performances of the body weights and the 11 body measurements of Hanwoo raised between 1987 and 1989 in farms and Hanwoo progeny test center. The body weights at birth, 6, 12, 18 and 24 months of age were 22.49kg, 148.18kg, 223.48kg, 267.76kg, and 291.77kg respectively. The body measurements were increased rapidly up to about 6 months of along with the body weight. Feeding managements and the nursing capacity of dam were considered important. factors to develop the body size of a calf early growing stage. As compared with the previous reports, for the body weights at 6 and 12 months of age and the measurements for body length, chest girth, and shank circumference at 6, 12 and 18 months of age were somewhat increased. This might be come from the improved feeding managements and the change of growth type by selection. The hipbones width(pinbones width), which had not been reported, at birth, 6, 12, 18 and 24 months of age were 8.96cm, 19.09cm, 19.26cm, 21.04cm, and 22.19cm respectively. The body measurements of 11 traits of male calves at 7 months of age shown to be similar to those of female calves at 12 months of age.

인간공학적 Bridge Conning Display 설계에 관한 연구

양영훈,이봉왕,유재문,이창민,Yang Young-Hoon,Lee Bong-Wang,Lew Jae-Moon,Lee Chang-Min 해양환경안전학회 2005 海洋環境安全學會誌 Vol.11 No.2

기술의 발전에 따라 다양한 항해 계기들이 개발되고 있으나, 인간 과실에 의한 해양사고는 지속적으로 발생하고 있다. 따라서 사고를 감소시키기 위해 항해 장비들을 인간공학적으로 배치하고 설계하는 것이 관심의 대상이 되고 있다. 이러한 흐름에 각 국의 선급 및 해운 관련 기구에서는 인간공학적 개념을 적용한 통합선교시스템(Integrated Bridge System : IBS)에 대한 규정을 마련하고 있으며, IBS는 인간 과실로 인한 해양사고를 감소시키기 위한 설계와 정보의 제공을 중심으로 발전 할 것으로 예상된다. IBS의 일환으로, 선박 운항 시 항행정보를 하나의 모니터에 보여주는 Conning Display는 선교 근무자가 필요한 정보를 얻기 위해 취하는 부수적인 행동, 시간 등을 단축시킨다. 그러나 Conning Display 설계에 있어 표준화된 규범이 없으므로 객관적 연구가 필요한 실정이다. 본 논문에서는 설문조사와 스케치 기법, 휴리스틱 평가 등의 방법들을 통해 Conning Display의 인간공학적 설계를 위한 요소를 추출하였다. 이를 바탕으로 새로운 Conning Display를 제작하여 기존 fouling Display와 비교, 평가 실험을 실시하였다. 본 논문의 결과를 통해 향후 더 나은 Conning Display를 설계, 개발하는데 있어 인간공학적 지표를 제시하고 하나의 표본으로 사용될 수 있을 것이라 사료된다. According to the development of technology of the navigational equipments, many bridge equipments have been improved, however, marine accidents by human error have not been reduced. Therefore, a matter of primary concern is focused on whether bridge equipments of ships are ergonomically arranged to reduce errors due to human factors. As part of a design of IBS(Integrated Bridge System) standard, rules of the conning display to save time and additional movements to obtain important informations of a ship should be established as soon as possible. In the present study, ergonomic design factors for the conning display are studied through the survey of related works, heuristic evaluations, sketch method tests as well as questionnaires. Using these factors, new conning display was designed and the ergonomic indices were evaluated by comparing tests of the existing conning displays. It is found that the designed conning display obtained high ergonomic index showed better performance, therefore, the ergonomic index studied in the present paper can be used as a useful design standard in the conning display design procedures.

종모우모형에서 직접법과 반복법의 해의 비교

양영훈,오봉국,이득환 ( Y . H . Yang,B . K . Ohh,D . H . Lee ) 한국축산학회 1990 한국축산학회지 Vol.32 No.11

For the evaluation of breeding values of animals, A trial to get solutions from the Iterative(SUR: Successive underrelaxation method) and the G-inverse was carried out using a sire model with 76 levels of 7 independent factors in this study. The results showed no differences between the solutions from directive(G-inverse) method and that from iterative method. For the four(0.1, 0.2, 0.3, 0.35) different relaxation factors(W) to speed up the convergence to the final solution, even though the number of rounds of interaction was affected, there were no differences in the final solutions. The numbers of rounds of iteration t get final solutions from a restriction({ b₁^n+1 - b₁} $lt;0.0001) under for the 0.1, 0.2, 0.3 and 035 relaxation factors were 1729. 928, 649 and 563 rounds respectively. It is the good iteration parameter(w) whether the convergence is speeded up or not. Since Iterative method is very simple to be programized and needs relatively small computer memory, it could be useful for solving large and complex equations in animal evaluation.

부화시 체중 및 정강이 길이가 꿩의 육성기 체중에 미치는 영향

양영훈,이현종,김규일,김준,김대철,Yang, Y.H.,Lee, H.J.,Kim, K.I.,Kim, J.,Kim, D.C. 한국가금학회 1995 韓國家禽學會誌 Vol.22 No.1

A total of 514 birds were used to investigate the influence of body weight and shank length at hatch on the body weights at various ages in growing pheasant. Statistical model included the terms of hatch and sex as fixed effects and the two covariates of body weight and shank length at hatch. In this model, the effects of hatch and sex on the body weights at the age of 4, 8, 12, 16 and 20 wk, and the average daily gains from hatch to 8 wk and from 8 to 16 wk of age were highly significant(P<0.01). All the regression coefficients of body weights and average daily gains on the body weight at hatch were also significant(P<0.01). Their estimates were 3.05.7.21. 13.89, 15.18 and 15.33 for the body weights at 4. 8, 12, 16 and 20 wk of age ; 0.111 and 0.142 for the average daily gains from hatch to 8 wk, and from 8 to 16 wk of age, respectively. On the shank length, only the regression coefficients of the body weights at 4 and 8 wk of age and the average daily gains from hatch to 8 wk of age were significant(P<0.01). Results of this study suggest that body weight at hatch do significantly affect the body weights in the growing periods up to' the 20 wk of age, but the shank length at hatch influences the body weights only at early age.1)

인공점등사육 꿩집단에 있어서 난중이 (卵重) 부화체중 (孵化體重) 및 20주령 선발체중에 미치는 영향

양영훈,이현종,김규일,김문철 ( Y . H . Yang,H . J . Lee,K . I . Kim,M . C . Kim ) 한국축산학회 1996 한국축산학회지 Vol.38 No.1

인간공학적 선교통합알람장치의 개발을 위한 기초 연구

양영훈,양찬수,공인영,이봉왕,Yang, Young-Hoon,Yang, Chan-Su,Gong, In-Young,Lee, Bong-Wang 해양환경안전학회 2005 해양환경안전학회지 Vol.11 No.1

선박의 항해 계기들의 기술이 발전됨에 따라 많은 장비들이 개발되고 있으나 여전히 인간과실에 의한 해양 사고는 지속적으로 발생하고 있는 현실에서, 인간과실에 의한 사고를 감소시키기 위하여 선교의 항해 계기들은 인간공학적적으로 배치, 설계되었는지가 많은 관심의 대상이 되고 있다 선교 내 여러 계기들의 알람장치는 선교 근무자에게 그 알람 장치가 주고자 하는 정보를 가능한 빨리 인식하고 정확한 정보를 전달할 수 있도록 설계되어야 하며, 국제적으로 인간공학적 선교를 위한 알람장치(Bridge Alarm Management System : BAMS)의 필요성이 논의 되고 있으나 아직 실질적인 설계방법 등에 대해서는 논의가 이루어지고 있지 않다. 따라서 본 논문에서는 선박의 여러 설비 중 선교의 알람장치에 관한 인간공학적 개념의 설계에 대하여 알아보고 현재 개발, 운용 중인 인간공학적 통합선교시스템(Integrated Bridge System :IBS)의 선교통합알람장치(Ergonomic Integrated Bridge Alarm Management System : EIBAMS)에 관한 개념적인 설계를 제안하고자 한다. According to the development if the ships navigational equipment, a bridge system has been improved but a marine accidents by human error haven't been reduced Recently our interest is concentrated on a suitable ergonomic arrangement and design of the ships bridge equipment to reduce an error due to human factors. The bridge alarm system should be designed to recognize the alarm informations as soon as possible and to deliver it clearly. Internationally, the matter is being discussed on the BAMS(Bridge Alarm Management System) in a view if a ergonomic bridge design, but a practical design method is not getting result.. In this paper I would like to review an application approach of human engineering ergonomics to a bridge alarm system and propose a conceptual design if the Ergonomic Integrated Bridge Alarm Management System(EIBAMS)

Shock Pulse Sensor 에 의한 저속에서의 베어링 결함 검출

이중혁(J. H. Lee),김영선(Y. S. Kim),양영훈(Y. H. Yang),이수빈(S. B. Lee),박선미(S. M. Park),김석현(S. H. Kim) 한국정밀공학회 2016 한국정밀공학회 학술발표대회 논문집 Vol.2016 No.5월

알코올이 선박운항능력에 미치는 영향에 관한 기초연구(Ⅰ)

김홍태(Hongtae Kim),양찬수(Chan-Soo Yang),양영훈(Young-Hoon Yang),이봉왕(Bong-Wang Lee),이창민(Chang-Min Lee),이재환(Jae-Hwan Lee) 대한조선학회 2005 大韓造船學會 論文集 Vol.42 No.5

쇽 펄스 센서를 이용한 저속 축 베어링의 결함 검출

양영훈(Young-Hun Yang),이중혁(Joong-Hyeok Lee),박선미(Sun-Mi Park),김석현(Seockhyun Kim) 대한기계학회 2018 대한기계학회 논문집. Transactions of the KSME. C, 산업기술과 혁신 Vol.6 No.2

메가와트 급의 대형 풍력터빈은 매우 낮은 속도로 장시간 회전하면서 전력을 생산한다. 터빈에 사용되는 베어링은 반복 하중에 장시간 노출되면서 결함이 발생하기 쉬운 요소이다. 큰 고장을 사전에 방지기 위해서는 베어링의 결함을 초기에 진단하는 것이 중요하다. 그러나 축의 회전속도가 낮고 하중이 작을 때, 작은 결함에서 내는 미세한 이상 진동은 일반적인 가속도계로는 그 검출이 쉽지 않다. 쇽펄스 센서는 베어링과 내·외륜 사이에 미세한 충돌이 발생할 때, 이를 공진 증폭 시켜 유의미한 검출신호를 출력시킨다. 본 연구에서는 저속 회전기계 모듈을 제작하여 가속도계로 신호 검출이 어려울 정도의 작은 결함을 만들었다. 이를 대상으로 쇽 펄스 센서로 미세한 결함 신호의 검출이 가능한지를 확인하였다. Large megawatt wind turbines produce electricity at very low speeds for long periods of time. The bearings used in the turbine are susceptible to failure due to prolonged exposure to cyclic loads. It is important to diagnose bearings defects early to prevent large failures in advance. However, when the rotation speed of the shaft is low and the load is small, it is not easy to detect a minute abnormal vibration from a small defect by a general accelerometer. When a slight collision occurs between the bearing and the inner/outer races, the shock pulse sensor is resonated and generates a defect signal. In this study, a low - speed rotating machine module was fabricated and made a small defect that is difficult to detect signal with accelerometer. With this module, we examined whether a shock pulse sensor can detect a minute defective signal.

제주재래마 혈통정립 및 혈통등록을 위한 조사연구 2 . 제주재래마의 체위측정치에 대한 혈통등급의 고정효과

양영훈(Y . H . Yang),정창조(C . J . Jung),이현종(H . J . Lee),강태숙(T . S . Kang) 한국축산학회 1991 한국축산학회지 Vol.33 No.6

The effects of registration grade on the body measurements were analyzed with a fixed effect model including the effects of location. age, sex, and registration grade For the least squares means of body measurements of the registration grades(A, B, E), the estimates of the body measurements for the grade A. which was classified into Cheju Native Horse Group. was the least one of all those of registration grades. There were highly significant differences (p$lt;0.01) for the least squares means between grade A and grade E. The least squares means and the standard errors of the registration grade A were 118.63±0.23. 115.59±0.24, 120.66±0.27, 139.21±0.35, 56.07±0.14. 27.76±0.15, 36.63±0.12, 40.37±0.12, 37.27±0.12. 119.68±0.28, 46.18±0.09 and 15.65±0.04 for the withers height. back height, croup height, chest girth, chest depth, chest width. thurl width. rump width, rump length. body length, face length and shank circumference. respectively.