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Song, Hyo-Min,Sohn, Young-Jin,Shin, Yoonseok The Korean Institute of Building Construction 2015 한국건축시공학회지 Vol.15 No.6
Technologies for reducing construction duration are key factors in nuclear power plant construction projects, as a reduction in construction duration at the construction phase leads to a reduction in construction cost and an increase in profits through the early operation of the nuclear power plant. To analyze the constructability of the height of single-layer placement of formwork for the Reactor Containment Building (RCB) exterior wall through lateral pressure according to the height of concrete placement, the deformation criteria for formwork, and a new form design, 'MIDAS GEN (hereinafter referred to as MIDAS)' is used in this study. The cost and workload of formwork are derived according to the unit of height of the RCB exterior wall. Based on the result, it was found that the higher the RCB exterior wall, the higher the material cost, and the less the construction duration and the less the total number of formwork layers. Based on this result, it is believed that the material cost and the construction duration can be appropriately determined according to the formwork height.
Knowledge, Attitude and Behavior of High School Students Regarding Irradiated Foods
최윤석(Yoonseok Choi),송종남(Jongnam Song),정문택(Moontaek Jeong),최남길(Namgil Choi),한재복(Jaebok Han) 한국방사선학회 2014 한국방사선학회 논문지 Vol.8 No.6
방사선조사식품에 대한 광범위한 국민적 공감대를 형성하고 국민이해를 제고하기 위한 커뮤니케이션 전략의 일환으로 교육적인 개입전략을 계획하는데 필요한 기초 근거자료를 제공하고자 하였다. 일반인 중 교육의 파급효과가 높은 고등학생을 대상으로 방사선조사식품에 대한 지식, 태도 및 행위 수준을 조사한 결과 방사선조사식품에 대해 정보를 습득한 경험이 없는 학생이 82.9%(627명), 교육 경험이 없는 학생이 89.3%(675명)로 압도적으로 많았다. 교육을 받지 못한 이유로는 교육의 기회가 없어서(88.2%)가 대부분이었다. 방사선조사식품에 대한 지식수준은 1.71점(10점 만점)으로 매우 낮은 수준을 나타냈고, 방사선조사식품의 안전성에 대한 태도수준도 2.76점(5점 만점)으로 비교적 낮은 태도수준을 나타냈다. 이는 방사선조사식품에 대한 매우 낮은 지식과 부정적 태도를 가지고 있기 때문에 방사선조사식품을 구입 및 섭취로 이어지는 행위수준은 낮을 수밖에 없다고 예측할 수 있다. 또한 방사선조사식품에 대한 교육경험이 있는 학생이 교육 경험이 없는 학생보다 방사선조사식품에 대한 긍정적 태도수준이 더 높게 나타났다(p<0.001). 이러한 결과는 방사선조사식품에 대한 지식제공 뿐만 아니라 올바른 태도형성을 위한 교육을 함께 제공할 필요가 있음을 알 수 있다. This paper presents basic supporting data necessary for planning an educational intervention strategy as part of a communication strategy that would form an extensive national consensus on and enhance national understanding of irradiated foods. A survey was conducted to collect data on the knowledge, attitude, and behavior with regard to irradiated foods among high school students, on whom education has a great ripple effect compared with the general public. The results show that 82.9% (627 students) have acquired no information, whereas 89.3% (675 students) have received no education on irradiated foods. The reason for these overwhelmingly large percentages is the lack of available opportunity for education(88.2%). Their level of knowledge on irradiated foods scores 1.71 points (out of 10 points), which is very low, whereas their attitude toward the safety of irradiated foods scores 2.76 points (out of 5 points), which is relatively low as well. As such, we predict that their tendency to purchase and consume irradiated foods is low, given their very low level of knowledge of and negative attitude toward irradiated foods. The students who have been educated on irradiated foods show a higher level of positive attitude (p<0.001) toward irradiated foods compared with those who have had no education. This result suggests the need to provide high school students with knowledge on irradiated foods as well as education in the same to help them form a proper attitude toward these food items.
추천시스템을 활용한 멀티 에이전트 강화학습과 연합학습 기반의 콘텐츠 캐싱시스템
이우빈(Woobin Lee),송윤석(Yoonseok Song),임민중(Minjoong Rim) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.2
본 논문은 다양한 스마트 기기에서 오는 사용자의 콘텐츠 요청과 요청되는 콘텐츠 자체의 용량증가로 인해 트래픽이 급증하는 피크 시간에 발생하는 네트워크 문제를 해결하기 위해 추천시스템을 활용한 캐싱시스템을 제안한다. 문제 해결을 위해 네트워크 엣지의 캐시에서 사용자들의 선호도가 높은 콘텐츠를 미리 캐싱하여 콘텐츠의 중복 요청을 줄이는 방법을 사용한다. 이 과정에서 추천시스템의 추천에 의해 변동되는 콘텐츠 선호도를 예측하기 위해 강화학습과 지도학습을 사용한다. 또한 실제 캐시가 설치되는 환경은 주변에 다수의 캐시가 같이 존재하는 환경임을 고려하기 위해 멀티 에이전트 강화학습 환경을 구성한다. 다수의 에이전트를 고려할 때 학습 수렴 속도를 높이기 위해 연합학습을 사용한다.
Validation of the Korean version Moorehead-Ardelt quality of life questionnaire II
Yeon Ji Lee,Hyun Jin Song,Yoonseok Heo,Sung-Hee Oh,Jin Won Kwon,Kon-Hak Moon,Joong-Min Park,Sang Kuon Lee 대한외과학회 2014 Annals of Surgical Treatment and Research(ASRT) Vol.87 No.5
Purpose: To investigate the weight loss effects with higher sensitivity, disease specific quality of life (QoL) instruments were important. The Moorehead-Ardelt quality of life questionnaire II (MA-II) is widely used, because it was simple and validated the several languages. The aims of present study was performed the translation of MA-II Korean version and the validation compared with EuroQol-5 dimension (EQ-5D), obesity-related problems scale (OP-scale), and impact of weight quality of life-lite (IWQoL-Lite). Methods: The study design was a multicenter, cross-sectional survey and this study was included the postoperative patients. The validation procedure is translation-back translation procedure, pilot study, and field study. The instruments of measuring QoL included the MA-II, EQ-5D, OP-scale, and IWQoL-lite. The reliability was checked through internal consistency using Cronbach alpha coefficients. The construct validity was assessed the Spearman rank correlation between 6 domains of MA-II and EQ-5D, OP-scale, and 5 domains of IWQoL-Lite. Results: The Cronbach alpha of MA-II was 0.763, so the internal consistency was confirmed. The total score of MA-II was significantly correlated with all other instruments; EQ-5D, OP-scale, and IWQoL-Lite. IWQoL-lite (ρ = 0.623, P < 0.001) was showed the strongest correlation compared with MA-II, followed by OP-scale (ρ = 0.588, P < 0.001) and EQ-5D (ρ = 0.378, P < 0.01). Conclusion: The Korean version MA-II was valid instrument of measuring the obesity-specific QoL. Through the present study, the MA-II was confirmed to have good reliability and validity and it was also answered simple for investigating. Thus, MA-II could be estimated sensitive and exact QoL in obesity patients.