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논문 - 새만금호 농업용지 방수제 주요지점의 수위 및 유속 분포 수치모의
김동주,김지성,박영진,Kim, Dong-Joo,Kim, Ji-Sung,Park, Young-Jin 한국관개배수위원회 2011 한국관개배수논문집 Vol.18 No.2
In this study, the internal development of the Saemangeum basic concept of the changes being promoted as a lead construction and agricultural land works(54.2 km) has established a numerical model for the scenario. Inner dike to the construction site to reflect the following conditions to reproduce the numerical model by each areas during construction inner dike where scour expected to perform a numerical analysis for the hydraulic review by areas with possible future changes were to predict. Simulation results showed that numerical simulation results for scour expected frequency of 100 years in flood conditions is simulated with 0.02 m/s~l.27 m/s scour velocity for high-impact factor is considered to be stable. Each start point and end point work area of inner dike reviewed and flow rate of 100 years flood, the velocity distribution in the influx of a large flow rate of 0.02 m/s~1.68 m/s occur during construction inner dike are not being evaluated as a special issue does not occur will be considered according to the method and order of construction inner dike stability review suggests that the future need to be made.
金東主,洪元植 대한한의학원전학회 1989 대한한의학원전학회지 Vol.3 No.-
Chuyoˇk and Naekyoˇng which are the foundations for oriental philosophy and oriental medicine respectively have had a great influence on Orental ideas for several thousand years. On this study is focused on the comparative study about the tow. And the results are as follows; 1. Chuyoˇk and Naekyoˇng agree with respect to the relationship between Nature and Man. They both insist that everything should come into being through collaboration between Heaven and Earth and that Man is the noblest among them. 2. Though Chuyoˇk and Naekyoˇng agree in regard to the authority of Man's nobility, the one stands on the opinion that Man is noble because of 'Tao'(道), while the other maintains that Man is precious because he is created and changed according to the principle of the Universe. 3. There is a slight difference between Chuyoˇk and Naekyoˇng in the principle of Yin and Yang, and the five elements of the Chinese cosmogony, Chuyoˇk explains the change and development of everything on the basis of the principle of Yin and Yang, and make no concrete mention of the five elements of the Chinese cosmogony. While Naekyoˇng applys the principle of Yin and Yang and the five elements of the Chinese cosmogony to the human body. 4. Though Chuyoˇk contains little knowledge of the inside of the human body in the anatomical matters, it includes some informations of the outside of the human body. But the basic physiological informations had already existed at that time. 5. Regarding the way of life cultivation, Chuyoˇk and Naekyoˇng concurs. The two books advise to avoid unsuitable meal, overdrinking, inappropriate residence and so forth for the sake of good health. They make much of the mental harmony and maintain the accommodation to the change of Nature to keep a sound mind and body.
의도적 혈관 압박손상 후의 가토 대퇴동맥의 미세혈관 문합시 헤파린의 국소세척 및 전신투여 효과에 대한 실험적 연구
김동주,김수관,문성용,윤정훈,Kim, Dong-Joo,Kim, Su-Gwan,Moon, Seong-Yong,Yoon, Jung-Hoon 대한악안면성형재건외과학회 2007 Maxillofacial Plastic Reconstructive Surgery Vol.29 No.2
This study compared the histological patency rates of anastomoses of the femoral artery. Twelve rabbits weighing about 2 kg were studied. Both the right and left femoral arteries were cut. The control group had no damage to the vessel, saline irrigation, and micro-anastomosis. Experimental group I had a crush injury to the vessel, saline irrigation, and micro-anastomosis. Experimental group II had a crush injury, saline irrigation, 100 U/ml heparin irrigation, and micro-anastomosis. Experimental group III had the same treatment as experimental group II plus the systemic application of 100 U/kg heparin iv. The histological patency rates were compared. The patency rates of the control group 30 min and 3 days after the anastomosis were 100 and 83%, respectively. The respective rates for experimental groups I and II 30 min and 3 days after the anastomosis were 100% in all cases. The respective rates in experimental group III were 100 and 83%. In this study, no significant correlation was observed between the patency rate and the effects of local irrigation or the systemic application of heparin on the microvascular anastomosis of the rabbit femoral artery. However, the patency rate tended to decrease concomitantly with an increase in surgery time. Increased bleeding was observed after the systemic application of heparin. Obvious damage to the crush-injured vascular endothelium was detected on histologic examination of the micro-anastomosed area. In addition, some vessels subjected to crush injury contained thrombi attached to the vascular endothelium. No preventive effect of heparin on thrombus formation was observed.
5톤/일급 연소보일러에서의 공기비에 따른 Bio-drying 고형연료 연소특성에 관한 연구
김동주,윤영식,정법묵,박영수,이상엽,정연욱,서용칠,이병선 한국폐기물자원순환학회 2018 한국폐기물자원순환학회 학술대회 Vol.2018 No.05
기존 단순소각 및 매립방식의 전통적인 방법으로 처리되던 생활폐기물이 내포하고 있는 가연성 에너지 자원을 보다 효율적으로 재활용하기 위한해 고형연료화 처리하는 시설이 연구단계를 넘어 상용급 시설로 발돋움하고 있으나, 반입되는 생활폐기물 대비 30 ~ 45%의 저품위 잔재물이 발생하며 대부분이 매립을 통해 처리되고 있는 실정이다. 생분해성 유기물질에 의해 발생되는 미생물의 호기성 분해열을 이용하여 폐기물의 함수율을 감소시키는 Bio-drying 기술을 통해 고형연료 생산에서 발생한 잔재물을 고형연료 품질기준 수준으로 끌어올려 고형연료 생산수율을 향상시킴과 동시에 매립되는 비율을 최소화 할 수 있다. Bio-drying 기술을 통해 생산된 저품위 잔재물 기반 고형연료를 활용하여 열에너지를 회수하기 위해 0.1톤/일 Bench급 연소보일러에 적용한 선행연구를 진행하였다. 본 연구에서는 저품위 잔재물을 활용하여 Bio-drying 공정으로 생산한 Bio-drying 고형연료의 연소특성을 파악하기 위해 0.1톤/일 Bench급 연소보일러 테스트 결과를 바탕으로 5톤/일급 연소보일러 시스템을 구축하였다. 수냉 화격자 방식의 5톤/일급 연소보일러 시스템은 연소로, 에너지회수보일러, 열교환기, 건식세정탑, 백필터 구성되어 있다. 5톤/일급 연소보일러 시스템의 성능평가 및 Bio-drying 고형연료의 연소특성을 파악하기 위해 공기비(Equivalent Ratio, ER)에 따른 연소효율을 분석하였으며, 연소가스에 포함된 대기오염물질 분석을 수행하였다. 또한, 연소 후 발생한 바닥재의 강열감량, XRD 및 XRF 분석을 통해 바닥재 발생특성을 파악하였다.
머신러닝 기법을 활용한 에너지 데이터 분석에 관한 연구
김동주,권성철,문종희,심기도,배문성,Kim, Dongjoo,Kwon, Seongchul,Moon, Jonghui,Sim, Gido,Bae, Moonsung 한국전력공사 2021 KEPCO Journal on electric power and energy Vol.7 No.2
After the spread of the data collection devices such as smart meters, energy data is increasingly collected in a variety of ways, and its importance continues to grow. However, due to technical or practical limitations, errors such as missing or outliers in the data occur during data collection process. Especially in the case of customer-related data, billing problems may occur, so energy companies are conducting various research to process such data. In addition, efforts are being made to create added value from data, which makes it difficult to provide such services unless reliability of data is guaranteed. In order to solve these challenges, this research analyzes prior research related to bad data processing specifically in the energy field, and propose new missing value processing methods to improve the reliability and field utilization of energy data.