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양영훈,김준,Yang, Y.H.,Kim, J. 한국가금학회 1993 韓國家禽學會誌 Vol.20 No.4
육성기 꿩의 주령별 체중과 정강이 길이에 관한 상호관계를 조사하고, 조기 체중과 정강이 길이가 종꿩으로의 최종 선발주령인 20주령의 체중에 대한 회귀분석 결과 다음과 같았다. 부화시부터 20주령까지 성장기 꿩의 동일주령에서 체중과 정강이 길이는 암꿩에서 0.50~0.83, 수꿩에서 0.57~0.85의 정의 상관관계(P<0.01)를 보여주고 있었으며, 부화시 체중은 4, 8 및 12주령의 체중과는 상관관계가 인정되지 못했으나 (P>0.05), 부화시 체중과 16 및 20주령 체중과의 상관계수는 암컷에서 0.44(P<0.01) 및 0.44(P<0.01)로, 수컷에서는 각각 0.32(P<0.05) 및 0.30(P<0.05)로 성장말기 체중과 정의 상관관계로 나타나고 있었으나, 부화시 정강이 길이와 20주령의 체중 사이에는 암수 모두에서 상관관계가 인정되지 않았다(P>0.05). 20주령의 체중에 대한 조기 측정치(12주령 이전)들의 회귀모형들을 검토한 바, 부화시와 12주령시 측정치를 포함한 모형 ($R^2$=0.96), 8주령과 12주령시 측정치를 포함한 모형($R^2$=0.96), 또는 부화시, 8주령 및 12주령시 측정치를 이용한 모형($R^2$=0.97)으로 평가하는 것이 좋을 것으로 사료되었다. The objective of this study was to investigate the correlation among the measurements of the body weight and shank length at the age of 0, 4, 8, 12, 16 and 20 wk, and to investigate the regression of the final body weight at the age of 20 wk in selection on the body weight and shank length before 12 wk of age. From the simple correlation analysis, the range of correlation coefficients between body weight and shank length at the same age were 0.50~0.83 from females, and 0.57~0.85 from males over all wk of age(P<0.01). Correlation coefficient between the body weights at hatch and 20 wk of age was 0.44(P<0.01), but it was not significant(P>0.05) between the shank length at hatch and body weight at 20 wk of age. The favorable regression models for the estimation of the body weight at the age of 20 wk from both body weight and shank length before 12 wk of age were the models with the independent variables of measurements at hatch and 12 wk of age($R^2$=0.96), with the measurements at 8 and 12 wk of age($R^2$=0.96), and with the measurements at 0, 8 and 12 wk of age ($R^2$=0.96).
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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)
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육성기 꿩의 주령별 체중과 정강이 길이의 측정치에 나타나는 부화차순과 성별의 효과
양영훈,김준,Yang, Y.H.,Kim, J. 한국가금학회 1993 韓國家禽學會誌 Vol.20 No.4
육성기 꿩의 체중과 정강이 길이의 측정치에 나타나는 부화차순과 성별의 효과를 조사하고자 개체별 20주령까지 측정된 육성기 꿩에 대한 분석을 한 결과 다음과 같았다. 육성기 암꿩의 체중은 부화시, 4, 8, 12, 16 및 20주령에서 각각 17.9, 96.0, 296.4, 563.4, 709.0 및 757.4g 이었으며, 수꿩은 주령별 각각 18.3, 104.4, 349.1, 728.5, 1001.4 및 1101.6g 으로 나타났다. 부화차순의 환경효과은 일반적으로 정강이 길이보다 체중에 더 많이 영향을 미치는 것으로 나타났으며, 체중과 정강이 길이에 대한 성별효과는 부화시에는 없었으나(P>0.05), 그 후 사육주령이 경과할수록 뚜렷하게 나타났다. 암수에 따른 성별의 차이는 부화시를 제외하고 4, 8, 12, 16 및 20주령에서 체중과 정강이 길이 모두 유의차(P<0.05)를 보여주었고, 부화시에 차이가 없었던 체중이 20주령에서는 수꿩의 암꿩에 비해 약 344g 이나 더 무거웠다. 정강이 길이의 성장은 암수 모두 16주령까지 거의 완성되는 것으로 나타났다. The objective of this study was to investigate the effects of hatch and sex on the body weight and shank length of growing pheasant. Least squares means of body weight at the age of 0, 4, 8, 12, 16 and 20 wks were 17.9, 96.0, 296.4, 563.4, 709.0 and 757.4 g for female, and 18.3, 104.4, 349.1, 728.5, 1001.4 and 1101.6 g for male, respectively. The hatch effect on body weight was significant at the age of 4, 8, 12 and 16 wks (P<0.05), but the effects on shank length were significant at the age of birth and 8 wks only. There was no significant hatch effect on both the body weight and shank length at the age of 20 wks(P>0.05). Least squares mean differences between female and male were significant(P<0.01) over all wks of age except at hatch.
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해양사고 예방을 위한 국내 연안선 항해당직자의 업무 부하 분석
양영훈,김홍태,장준혁,Yang, Young Hoon,Kim, Hongtae,Jang, Junhyuk 대한인간공학회 2017 大韓人間工學會誌 Vol.36 No.5
Objective: The purpose of this study is to measure the workload of Korea coastal ship crew members, to investigate whether they are following work-break time regulations and to identify the main causes of their workload. Background: According to the US Coast Guard, about 33% of human casualties are reported to be due to fatigue, and 30% of marine casualties reported by the British Marine Accident Investigation Agency (MAIB) are attributed to crew fatigue. But the coastal ship are not managed for business hours and breaks despite the harsh environment. Method: The workload of duty crew members on the 100 domestic coastal vessels was measured. It was also investigated whether they are following domestic and international work-break time regulations. Finally, the marine accidents resulted from the fatigue of the crew was analyzed. Results: As a result of workload analysis, the workload on the 42~62% of the vessels exceeded the standard of working time on the related regulation. The workload increased with the number of inbound and outbound ports. Especially, in the system where there are two seafarers, the workload exceeded the working time requirement. As a result of the marine accidents analysis on 100 vessels, it was found that collision and grounding occurred due to fatigue, workload and drowsiness in 7 marine accidents out of 30 marine accidents. Conclusion: It is necessary for the shipping companies to introduce an operation management manual for the management of the crews' workload and reasonable crew arrangement. It is also required for crew members to easily record work times and for shipping companies to manage the record. It would be possible to prevent many marine accidents by providing adequate rest to the crews and flexibly adjusting their working hours. Application: The results of this study can be used as fundamental data to manage crews' fatigue and to make job management manuals.
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본관 5층 시청각실 로비 : 디지털 협력 과제 시스템 구현
양영훈 ( Young Hoon Yang ),김종훈 ( Jong Hoon Kim ),김은길 ( Eun Gil Kim ) 한국컴퓨터교육학회 2010 한국컴퓨터교육학회 학술발표대회논문집 Vol.14 No.2
기존의 협동학습 시스템에 대한 연구는 많았다. 하지만 대부분 게시판 위주의 토론 형식에서 벗어나지 못한 점에서 한계가 있으며, 급변하는 사회 현실을 반영하지 못했다. 그런 텍스트 위주의 협동학습 시스템에서 벗어나고 최근 이슈가 되고 있는 SNS(Social Network Service)로 인해 생겨난 사회관계 공간이 새로운 가치 창출에 이바지하고 있다는 점에 근거하여 교육시스템에 SNS를 접목하고자 한다. 따라서 본 연구에서는 SNS 및 협동학습을 기반으로 한 협력 과제 시스템을 구축하여 현장에 적용함으로써 교육적 효과와 향후 교육 시스템의 발전 방향을 모색해 보고자 한다.
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인공점등사육 꿩집단에 있어서 난중이 부화체중 및 20주령 선발체중에 미치는 영향
양영훈(Y . H . Yang),이현종(H . J . Lee),김규일(K . I . Kim),김문철(M . C . Kim) 한국축산학회 1996 한국축산학회지 Vol.38 No.1
To determine the effect of the hatching egg weight on the newly hatched chick weight and the body weight at 20 wks, body weights were analysed with a linear model which had the fixed effects of the hate-time and the sex, and a covariable of hatching egg weight. The correlation coefficient between hatching egg weight and 1-d old chick weight was 0.83(p$lt;0.01), and between hatching egg weight and the body weight at the age of 20 wks was 0.17(p$lt;0.01). Hatch-time effects on the body weight at 1-d and the body weight at 20 wks were significant(p$lt;0.01) but the sex effect on the day old chick weight was not significant(p$gt;0.05). Estimates of the regression coefficients of the body weight at 1-d and the body weight at 20 wks were 0.69±0.02 (p$lt;0.01) and 11.24±1.70 (p$lt;0.01), respectively. These results showed that the hatching egg weight affected the body weight of newly hatched chick and the body weight at 20 wks.
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김문철,김규일,양영훈,김충남,김훈,Kim M.C.,Kim K.I.,Yang Y.H.,Kim C.N.,Kim H. 한국축산환경학회 2006 축산시설환경학회지 Vol.12 No.2
우리나라의 비육돈 성장단계별 돈사의 소요면적이 제주환경에서 적합성 여부를 검토하기 위해 시험이 성장 3단계별로 수행되었고 우리나라에서 추천된 육성돈 돈사의 바닥소요면적 $0.56m^2$을 중간 수준으로 하며 저 및 고밀도 3수준 4반복 난괴법으로 처리하여 일일증체량 및 육질 등을 조사 분석하였다. 성장단계 1(체중 $43{\sim}65kg$ 범위)에서 중 밀도 구(돈사바닥 소요 면적, $0.56m^2/pig$)의 일일증체량은 저나 고 밀도 구 보다 유의적 증가를 보였다(P<0.05). 그러나 성장단계 2(체중$65{\sim}91kg$ 범위)와 3(체중 $91{\sim}105kg$ 범위)에서는 일일 증체량이 처리간 뚜렷한 차이를 보이지 않았다. 마지막 도살시 도체중이나 등 지방 두께는 저밀도구가 중이나 고밀도구 보다 높았다. 최종 육질 등급도 저밀도구에서 높은 추세였다. 결론적으로 볼 때 육성초기(체중 $43{\sim}65kg$ 범위)에는 중간 사육밀도가 다른 두 처리 보다 높은 일당증체량을 보였으나 그 이후는 처리간 사육밀도 차이를 얻지 못 했다. Studies were carried out using growing to finishing pigs to investigate adequate floor space ($m^2/pig$) in Jeju environment. A randomized block design was used to compare the effect of pig performance on 3 stocking rates (low $0.56 m^2/pig$, medium 0.70 and high 0.90). Liveweight gain and feed intake were measured over a 4 week(Growth stage 1 and Growth stage 2) period or a 3 week(Growth stage 3) period. In growth stage 1 (43 to 65 kg body weight ; BW), daily weight gain was significantly higher in the medium stocking rate than in low or high (P<0.05). However, no significant difference in daily weight gain was found among treatments in growth stage 2(65 to 91 kg) or 3 (91 to 105 kg). Dressing percentage, back fat thickness and carcass grade were also not different (P>0.05). In conclusion, daily weight gain of pigs reared in medium density appeared to be higher than in the other groups during the early growing period which is $0.70m^2/pig$ and similar to that recommended by National Livestock Research Institute, RDA.
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