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세미베리오그램 모형을 적용한 남한지역 강수량 자료의 공간분석
허태영,서의훈,권원태 한국자료분석학회 2004 Journal of the Korean Data Analysis Society Vol.6 No.2
In this paper, we analyzed the Korean rainfall data by using the methods of spatial statistics. The methods of fitting the models are weighted least squares method, weighted least squares method using robust sample semivariogram, maximum likelihood estimation and residual maximum likelihood estimation. We compared the prediction performance of the fitting methods by using Korean rainfall data and we found that maximum likelihood estimation and residual maximum likelihood estimation are better fitting methods in spatial prediction. Also, in case of using the least squares method, the prediction performance can be increased much by using the robust sample semivariogram. 본 논문에서는 남한지역의 강수량 자료를 가지고 공간분석을 실시하였다. 세미베리오그램 모형의 모수 추정방법으로 가중최소제곱방법, 로버스트한 표본 세미베리오그램을 사용한 가중최소제곱방법, 최대우도방법과 잔차최대우도방법을 고려하였다. 강수량 자료를 가지고 일반 크리깅을 통해 예측성능을 비교한 결과, 최대우도방법이나 잔차최대우도방법에 의해 적합된 세미베리오그램 모형이 공간 예측을 가장 잘 하는 것으로 나타났다. 또한, 최소제곱방법을 사용하는 경우에는 로버스트한 표본 세미오그램을 사용하면 공간 예측 성능을 상당히 높일 수 있는 것을 알게 되었다.
허태영,정영훈,최창용,조용일,강석진,이현준,기광석,백광수,서국현,Hur, Tai-Young,Jung, Young-Hun,Choe, Chang-Yong,Cho, Yong-Il,Kang, Seog-Jin,Lee, Hyun-June,Ki, Kwang-Seok,Baek, Kwang-Soo,Suh, Guk-Hyun 대한수의학회 2013 大韓獸醫學會誌 Vol.53 No.2
The objective of this study was to investigate the calf death and analyse the causes of the mortality by based on medical records and autopsy findings during 10 years in a large dairy farm. Total of 1,361 calf born and 146 calf dead during the invested period. Mortality rate was 10.7% and showed the big difference by year-specific mortality from 2.8% (4 calves) to 19.2% (28 calves). The highest rate of mortality was 1 week age (18.5%, 27 calves) and followed by 2 week age (11.6%, 17 calves) and mortality of more old calf tended to be reduced. The death less than 4 weeks and 8 weeks of age of the entire mortality accounted for 41.1% (60/146 calves) and 70.0% (102/146 calves), respectively. Causes of calf death were digestive diseases (53.4%), respiratory diseases (17.1%), musculoskeletal disease (8.2%), and systemic disease (8.2%) in order. Specific causes of calf death was highest in enteritis (43.2%), followed by pneumonia (14.4%), sepsis (8.2%) and fractures (3.4%). Seasonally, most of calf death happened in winter (48.6%) and then fall (21.2%). This results showed that enteritis and pneumonia are the main reason of calf death but other reasons were involved in calf death on the based on autopsy finding. On going research relating factors of calf mortality is needed.
젖소에 있어서 Lipopolysaccharide의 처리가 번식 성적에 미치는 영향
백광수,박수봉,박성재,김현섭,이왕식,정경용,이현준,허태영,전병순,안병석,아주말 칸 韓國受精卵移植學會 2006 한국동물생명공학회지 Vol.21 No.3
본 연구는 젖소에 있어서 lipopolysaccharide의 처리가 번식 성적에 미치는 영향을 구명하기 위하여 2003년부터 2005년까지 3년간에 걸쳐 축산연구소 개방형 깔짚우사에서 사육중인 홀스타인 착유우 50두를 대상으로 처리구 및 대조구 각각 25두씩을 공시하였고 분만후 20일째에 1회에 한하여 Bacteroids helcogenes와 Fusobacterium varium으로부터 분리한 LPS 을 PBS 용액 35 ml에 희석하여 수정란 이식용 This study was carried out to investigate the effect of intra-uterine infusion of lipopolysaccharide (LPS) on reproductive performance in lactating dairy cows. Conception rate at first service was higher (56.0%) in dairy cows treated with LPS compared to non-treated cows (20.0 %). Cumulative conception rate by overall services (more than 2 services) after LPS treatment was also higher (64.0%) in dairy cows treated with LPS compared to non-treated cows (40.0%). Services per conception was significantly higher in control () compared with LPS () treated group (p<0.05).
허태영 미술사연구회 2023 미술사연구 Vol.- No.45
This paper studies the approach to nature espoused by the outdoor art collective Baggat Art, intending to highlight the group itself—active since the 1981 exhibition Winter, Open-Air Art Show at Daesung-ri by 31 Artists (Winter, Daesung-ri)—and reexamine its significance. To date, many have assumed that the birth of the Baggat Art, like that of the Winter, Daesung-ri exhibition, was rooted in a spirit of resistance aimed at the established generation of artists, a conclusion stemming from a lack of consideration for the wider context which surrounded the inception of the group. This paper accordingly focuses on the Baggat Art’s stance with regards to nature and the circumstances that shaped this position. An outdoor exhibition held annually from 1981 to 1992 on the banks of the Bukhan-gang River (Daesung-ri), the twelve years of Winter, Daesung-ri challenged the participating artists with their failure to build a discourse surrounding the natural environment in which their work was based, as well as their own developmental limitations; a combination of which had resulted in the production of only perfunctory pieces of work. The formation of the Baggat Art in 1992 was therefore a constructive dismantling of the Winter, Daesung-ri shackles, in an attempt to overcome such shortcomings. During this process, the Baggat Art reoriented its resistance to target industrialized society and environmental destruction, whereas the Winter, Daesung-ri exhibitions of the 1980s had offered primarily a defiant voice against the older generation of artists. This paper points out that interests of the Baggart Art lay in ecological issues, with considerable emphasis placed on providing a critical perspective of human civilization. This interpretation of the collective is noteworthy in that it enables a reading of the overall tendencies within the work of the Baggat Art and lays the foundation for further research.