• Annual Conference of KIPS
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• 2013.05a
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• pp.776-777
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• 2013

디지털 수량산출정보 교환표준" 건설CALS/EC 체계 내에서 사용되는 공정 공사비 관리를 위한 디지털 수량산출정보 관련 표준의 기본 요건을 정의하고 참여주체간의 효율적인 수량산출정보의 교환 및 공유기반을 마련함을 목적으로 2011년 4월에 제정되었다. 해당표준의 활용성과 확장을 위하여 스키마를 추가 개발하며, 건설사업관리시스템과 연동하여 사업참여 주체간 정보공유와 관리가 가능하도록 하였다.

• The Korean Journal of Applied Statistics
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• v.34 no.2
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• pp.239-254
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• 2021

This paper studies time series analysis with estimation and forecasting for Korean COVID-19 confirmed cases, based on the approach of a heterogeneous autoregressive (HAR) model with two-piece t (TP-T) distributed errors. We consider HAR-TP-T time series models and suggest a step-by-step method to estimate HAR coefficients as well as TP-T distribution parameters. In our proposed step-by-step estimation, the ordinary least squares method is utilized to estimate the HAR coefficients while the maximum likelihood estimation (MLE) method is adopted to estimate the TP-T error parameters. A simulation study on the step-by-step method is conducted and it shows a good performance. For the empirical analysis on the Korean COVID-19 confirmed cases, estimates in the HAR-TP-T models of order p = 2, 3, 4 are computed along with a couple of selected lags, which include the optimal lags chosen by minimizing the mean squares errors of the models. The estimation results by our proposed method and the solely MLE are compared with some criteria rules. Our proposed step-by-step method outperforms the MLE in two aspects: mean squares error of the HAR model and mean squares difference between the TP-T residuals and their densities. Moreover, forecasting for the Korean COVID-19 confirmed cases is discussed with the optimally selected HAR-TP-T model. Mean absolute percentage error of one-step ahead out-of-sample forecasts is evaluated as 0.0953% in the proposed model. We conclude that our proposed HAR-TP-T time series model with optimally selected lags and its step-by-step estimation provide an accurate forecasting performance for the Korean COVID-19 confirmed cases.

• Journal of Nutrition and Health
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• v.56 no.1
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• pp.70-85
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• 2023

Purpose: Several studies have been conducted on the relationship between green tea intake and metabolic syndrome. However, compared to the studies carried out internationally, there is inadequate research on the relationship between domestic green tea consumption and metabolic syndrome. Therefore, in this study, the general characteristics of Koreans according to their green tea intake and its association with metabolic syndrome were examined. Methods: A total of 44,611 subjects were included in the study, and analysis was carried out using data from the Korean Genome and Epidemiology Study (KoGES) for Korean adults aged 40 or older. Green tea consumption was estimated using 106 verified food frequency questionnaires (FFQ). Metabolic syndrome was defined using the National Cholesterol Education Program Adult Treatment Panel III (NCEP-ATP III) parameters. After adjusting for confounding variables by performing a Cox regression analysis, the association between green tea consumption and metabolic syndrome was confirmed through the hazard ratio (HR) and 95% confidence interval (CI). Results: The average incidence of metabolic syndrome was 18.7% (20.8% in men and 17.8% in women). Compared to those who drank almost no green tea, in subject groups consuming more than one cup of green tea a day, the metabolic syndrome incidence was significantly reduced by 15% (HR, 0.85; 95% CI, 0.74-0.96; p trend = 0.0200) among men and by 19% (HR, 0.81; 95% CI, 0.73-0.90; p trend < 0.0001) among women. In addition, the biomarkers related to metabolic syndrome also tended to decrease overall in these groups. Conclusion: This study concluded that as the intake of green tea increased, the incidence of metabolic syndrome and related indicators decreased. Therefore, green tea intake is believed to have a positive effect on the prevention and management of the metabolic syndrome.

• Proceedings of the Korean Society for Information Management Conference
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• 2002.08a
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• pp.109-114
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• 2002

더블린 코어는 15개의 기본 요소로 되어 있어서 매우 단순하지만 자관의 사정에 따라 확장사용이 가능하다. 본 연구에서는 교육분야의 메타데이터의 확장요소 사용을 위해서 DC Education, GEM, EdNA, EUN, 한국교육학술정보원 등 교육분야 다섯 개 시스템을 대상으로 확장요소를 비교·분석하여 여섯 개의 공통 추가 요소를 추출해서 제안하였다.

• Nuclear industry
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• v.38 no.3
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• pp.8-10
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• 2018

에너지 정책 합리화를 촉구하기 위해 전국 대학의 에너지 관련 교수들로 구성된 '에너지 정책 합리화를 추구하는 교수협의회'(이하 에교협)가 3월 23일 한국프레스센터 프레스클럽에서 창립기념토론회를 갖고 본격적인 활동을 개시했다. 서강대 이덕환 교수, 숭실대 온기운 교수, 카이스트 성풍현 교수 3인이 공동대표를 맡은 에교협은 이날 '우리나라의 바람직한 전력수급기본정책 방향 : 제8차 전력수급기본계획 개정을 위한 제언'을 주제로 토론회를 열었다. 에교협에는 이공계, 인문사회계 등 에너지를 전공하는 전국 57개 대학의 210명의 교수가 가입한 상태이며, 앞으로도 추가 가입이 이어질 예정이다. 다음은 에교협 창립 취지문 전문이다.

• Life and Agrochemicals
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• v.27 no.6 s.219
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• pp.56-59
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• 2006

「농약∙비료가격표시제」개정, 전격 시행/ 신임 농해수위 위원장에 권오을 의원/ 경농, 잎집무늬마름병 전문약「영그네」출시/ 농림부, 농약잔류허용기준 73개 추가/ 신젠타, 도열병∙잎집무늬마름병약「필리아」출시/ 농진청, 「제초제 저항성잡초의 발생과 관리」국제 심포지엄 개최/ 아리스타, 「친환경농업인 쉼터」개소식 가져/ 한국작물보호協, 「2006농약혼용정보」책자 발행/ 영일케미컬, 「개혁방향 모색 위한 특강」실시/

• Animal Systematics, Evolution and Diversity
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• v.4 no.1
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• pp.67-90
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• 1988

본 연구는 해양생태계의 저차생산 단계의 생산자로 중요시 되고 있는 유종섬 모충류(Tintinnina)의 분류학적 연구의 일환으로 진해만 일대에서 1978년부터 1984년까지 6년간에 걸쳐 채집된 시료와 1986년부터 1987년까지 추가 채집된 시료를 사용하여 유종섬모충류를 동정 분류한 결과, 총 6과 11속 289종이 출현하였다. 이들 28종은 모두 국내에서 처음으로 동정 분류된 것이므로 이를 한국산 미기록종으로 기재한다.

• Journal of Nutrition and Health
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• v.21 no.4
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• pp.260-267
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• 1988

Forteen healthy women, with normal serum cholesterol levels, were supplemented with two egg yolks daily for the 1st week and four egg yolks for the 2nd week to their customary diets for 2 weeks period. Serum cholesterol, triglyceride, phospholipid and lipoprotein fractions were determined. Serum cholesterol and phospholipid levels were not affected by the supplementation of egg yolks. However, triglyceride level was significantly increased by the supplementation of four egg yolks at the end of the 1st week, but the level remained normal range. The serum lipoprotein pattern was influenced by the supplementation of egg yolks : HDL fraction significantly decreased, while LDL and VLDL fractions significantly increased.

• Korean journal of applied entomology
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• v.28 no.1
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• pp.4-9
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• 1989

One species of pin-hole bore and fifty-two species of bark and ambrosia beetles were collected in 1987. Of fifty-three species, two species, Hylurgops palliatus and Xyleborus amputatus were recorded for the first time to the fauna.

• THE HEALTH and ORGANIC FARMING
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• no.186
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• pp.1-24
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• 2003

새해 새정부 출범과 함께 친환경유기농업의 도약을 위해 분발/세계를 선도해 나갈 대한민국의 국민건강은 우리가 책임진다!/매실 코팅쌀.이온쌀.완전미... 한국 '쌀 혁명' 시작됐다/농산물 전자상거래 우수사례/친환경농업 바람 거세다/유기농업경영의 삼장 통합구상/유럽의 어메니티 정책동향/21세기 친환경농업 새로운 방향/친환경농업 노지감자와 양상추 재배기술/1월중 농사정보/강토플러스의 활용법/종이멀칭을 이용한 벼농사 제초방법/노무현 대통령 당선자 농정공약/시설내 잿빛곰팡이병.토마토 역병의 방제