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이충섭,Lee, Chung-Seop 대한수의사회 2012 대한수의사회지 Vol.48 No.2
요즘 말산업육성법의 제정, 공포, 발효 이후에 말산업 중 1차산업에서 말목장의 역할이 급부상하고 있다. 과거의 말 산업이라 함은 한국마사회 중심의 경주마관련 산업이 각광을 받았다. 최근의 말 산업은 한국마사회에서 주축이 되어 국회를 통과한 말산업육성법에서 주목하고 있는 승용마관련 산업이라 할 수 있다. 그러나 아직 승용마의 생산이나 육성을 고려할 수 있을 정도의 전문 승용마 목장은 국내에서는 찾아보기 힘들고, 아직 말목장이라 하여 생산과 육성을 전문으로 하는 말목장은 경주마 생산목장이라 할 수 있을 것이다. 특히 망아지의 생산을 고려할 때 번식계절을 따로 가지고 있는 말을 일컬어 계절번식동물이라 하여 봄철에 말목장은 매우 바쁘게 하루를 보내게 된다. 장일성 계절번식동물로서 하루의 햇빛 시간이 길어지기 시작하는 동지부터 암말들의 번식생리는 서서히 활동하기 시작하여 지방에 따라 또는 사양기술에 따라 늦어도 3월 중순이 되면 자연적으로 배란이 가능한 난포를 발육하게 되어 정상적인 임신이 가능하게 된다. 다시 정리를 하면 계절번식동물은 번식기와 비번식기 사이에 수개월의 과도기가 있어서 공태마의 과도기에 대한 관리가 중요함을 강조할 여지가 발생하게 된다.
Hexahydro-1,3,5-trinitro-1,3,5-triazine(RDX)의 환원적 분해를 위한나노영가철의 성능평가: 회분식 및 칼럼 실험
이충섭,오다솜,조성희,이진욱,장윤석,Lee, Chung-Seop,Oh, Da-Som,Cho, Sung-Heui,Lee, Jin-Wook,Chang, Yoon-Seok 한국지하수토양환경학회 2015 지하수토양환경 Vol.20 No.6
Reductive degradation of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) by nanoscale zero-valent iron (nZVI) was investigated to evaluate the feasibility of using it for in-situ groundwater remediation. Batch experiments were conducted to quantify the kinetics and efficiency of RDX removal by nZVI, and to determine the effects of pH, dissolved oxygen (DO), and ionic strength on this process. Experimental results showed that the reduction of RDX by nZVI followed pseudo-first order kinetics with the observed rate constant (k<sub>obs</sub>) in the range of 0.0056-0.0192 min<sup>−1</sup>. Column tests were conducted to quantify the removal of RDX by nZVI under real groundwater conditions and evaluate the potential efficacy of nZVI for this purpose in real conditions. In column experiment, RDX removal capacity of nZVI was determined to be 82,500 mg/kg nZVI. pH, oxidation-reduction potential (ORP), and DO concentration varied significantly during the column experiments; the occurrence of these changes suggests that monitoring these quantities may be useful in evaluation of the reactivity of nZVI, because the most critical mechanisms for RDX removal are based on the chemical reduction reactions. These results revealed that nZVI can significantly degrade RDX and that use of nZVI could be an effective method for in-situ remediation of RDX-contaminated groundwater.
머신러닝(Machine Learning) 기법을 활용한 제주국제공항의 운항 지연과의 상관관계 분석 및 지연 여부 예측모형 개발 - 기상을 중심으로 -
이충섭,여혜민,김동신,백호종,Lee, Choongsub,Paing, Zin Min,Yeo, Hyemin,Kim, Dongsin,Baik, Hojong 한국항공운항학회 2021 한국항공운항학회지 Vol.29 No.4
Due to the recent rapid increase in passenger and cargo air transport demand, the capacity of Jeju International Airport has been approaching its limit. Even though in COVID-19 crisis which has started from Nov 2019, Jeju International Airport still suffers from strong demand in terms of air passenger and cargo transportation. However, it is an undeniable fact that the delay has also increased in Jeju International Airport. In this study, we analyze the correlation between weather and delayed departure operation based on both datum collected from the historical airline operation information and aviation weather statistics of Jeju International Airport. Adopting machine learning techniques, we then analyze weather condition Jeju International Airport and construct a delay prediction model. The model presented in this study is expected to play a useful role to predict aircraft departure delay and contribute to enhance aircraft operation efficiency and punctuality in the Jeju International Airport.
이충섭(Lee, choong-seob) 한국체육교육학회 2010 한국체육교육학회 학술발표대회 Vol.2010 No.2
This research has an objective to recast the role of boxing by establishing a correct awareness and values and understanding self-description on physic to middle and high school students elite boxers, and to analysis physical description of amateur boxers. In order to achieve this purpose, 64 boxers who anticipated middle and high school boxing championship on Chungbuk superintendent flag at present December 2009 were sampled as a universe. This research questionnaire was used physical self-description Korea version scale which was developed by Kim Byeong Jun in order to fit Korea situation from Marsh"s cultivated physical self-description questionnaire(1994), and used after verifying the validity and reliability through preliminary survey. Statistical package SPSS 12.0 Ver was used for the analysis. Also T-test and dispersion analysis was conducted in order to compare physical self-description of boxers by grade, career, weight of middle and high school students. Following conclusion was obtained through data analysis of this research and procedure. First, as a result to compare physical self-description evaluation scale of boxers of middle and hight school. five elements of appearance, physical activity, self-esteem, endurance and overall body among 10 elements show the significant difference by middle, high school, and high school students show high rating scale compare to middle school students on each element. Second, as a result of comparison for physical self-description evaluation scale of boxers by grade, appearance, four elements of physical activity, endurance, and overall body among 10 elements show the significant difference by grade, and high school students show high rating scale compare to middle school students on four elements. The result show that lowest valuation is middle school students 2 grade and highest valuation is hight school students 2 grade among them. Third, as a result of comparison for physical self-description evaluation scale of boxers by career of within one year, two years, three years and more than three years, three elements of sport competence, physical activity and endurance among 10 elements show the significant difference. More experienced boxers showed high evaluation on sport competence, physical activity and endurance Finally, as a result of comparison for physical self-description evaluation scale of boxers by weight of lightweight, middleweight and heavyweight, seven elements of sport competence, slimness, physical activity, flexibility, endurance, muscular strength and overall body among 10 elements show significant difference, and middleweight champion show high evaluation scale compare to lightweight and heavyweight champion on five elements of sport competence, physical activity, flexibility, endurance and overall body except slimness and muscular strength. But lightweight champion show highest on slimness and lowest on muscular strength.