건물내 라이프라인 배관의 내진성 향상을 위한 설계방법

辛太明,申澈洙,李洪西 충주대 2003 産業科學論文集 Vol.11 No.-

This paper emphasizer that seismic design of lifeline piping is necessary to avoid a secondary damage from earthquake like building fire. A large portion fo damage from the large historical earthquakes has been suffered surprisingly by post-earthquake fire. And it is well known that the fire had been caused by the failure of energy supply piping such as electricity pipes of gas pipes, of by the absence of rabid countermeasure system from failure of fire fighting equipment and water supply pipes. In this paper, it is discussed about a general seismic design method of building internal structure like lifeline piping and about a measure for reducing the seismic respones. As conclusions, it is proposed that lifeline piping should be simultaneously considered in the seismic design of building of importance for higher reliability.

이동평균모형의 붓스트랩 추정에 관한연구

김혜중,이승주,김명철 동국대학교 자연과학연구소 1991 자연과학연구 논문집 Vol.11 No.-

붓스트랩(bootstrap) 방법에 의한 이동평균 모형 추정 알고리즘을 제시하였다. 경험적 자료와 시뮬레이션 자료를 통하여 잭나이프 방법과의 유효성을 비교하였고, 이동평균 모형의 모분포의 가정에 대한 붓스트랩 추정의 로버스트성을 Monte Carlo 실험으로 비교해 보았다. Bootstrap method for the estimation of the moving average process is suggested. Based on an empirical and a simulated data set, relative merits of the method over the jackknife method is compared. Its robustness to the population distribution is also studied by a Monte Carlo experiments.

평야지재배 조생종 벼의 이화학적 및 식미특성 분석

정진일,김기영,최윤희,최원영,고종철,오명규,홍하철,이승엽,이명철 한국국제농업개발학회 2004 韓國國際農業開發學會誌 Vol.16 No.4

평야지재배 적응 조생종 벼 품종의 선발 및 품종 육성의 기초 자료로 활용코자 극조생종(1품종)과 조생종(10품종) 및 준조생(3품종)등 총 14품종을 산간지(운봉)와 평야지(익산)에 지역별 표준재배법으로 공시한 결과, 1. 극조생종 및 조생종들은 감온성이 커 산간지에서 출수가 빠르나, 준조생종에 속하는 상미벼, 영덕34호, 히또메보레 등은 감광성이 감온성보다 커, 평야지재배에서 4일정도 빨리 출수하였다. 2. 수량성은 대부분의 품종들이 산간지재배에 비해 평야지 재배에서 높았고 대체로 출수가 빠른 품종일수록 지역간의 수량차가 크게 나타났으며, 출수가 다소 늦은 준조생종들은 산간지와 평야지의 재배에서 수량차가 크지 않아 산간지 뿐만 아니라 평야지에서도 적응성이 높았다. 3. 단백질함량은 숙기가 다소 늦은 품종일수록 낮은 경향을 보였고 산간지보다는 평야지에서 낮았으며, 품종간에는 오대벼, 운봉30호, 영덕34호, 신석조생, 상미벼 등이 함유량이 낮았다. 4. 식미치는 산간지재배가 평야지에 비해 보다 높게 나타났고, 출수가 늦을수록 높았으며, 지역간 차가 크게 나타난 품종은 극조생종인 키라라397이었고, 출수가 늦은 상미벼와 히또메보레는 차가 적었다. 5. 산온도와 수량과의 상관은 산간지에서만 영향이 있을 뿐 평야에서는 영향이 적고 일사량과 일조시수가 수량에 보다 상관성이 높았으며, 식미치는 적산온도와는 부의상관, 생육 일수와는 정상관을 보였다. This experiment was carried out to clarify the difference of rice yield and the quality of rice in southern plan area and in alpine area. Yield and quality of fourteen early varieties were investigated under the different transplanting dates and planting densities in southern plan area(Iksan) and in alpine area(Unbong). In the alpine area, extremely early variety and early varieties headed early compared to the plain area, but medium early varieties headed about 4 days late unlike the alpine area. The yield difference of most early varieties including Kilara 397 of extremely early flowering variety were greater in plain area than in alpine. The different of yield between plain and alpine area was less in varieties with Sinseogjosaeng, Odaebyeo, Akidagomachi, and Yeungdeuk34. The rate of protein was lower in plain area than alpine and more lately flowering than early, but palatability of milled rice was higher at the alpine area and more lately flowering varieties. Correlation coefficients between yield and meterological data during maturity, yield shower the significant correlation with integrated solar radiation and sunshine hours at cultured in southern plan area, but it showed only cumulative temperature in alpine area. Palatability of miller rice was positive correlation at growth duration but negative correlation at cumulative temperature.

외국은행 국내지점의 경영성과

이명철 ( Myung Cheul Lee ) 한국금융공학회 2007 금융공학연구 Vol.6 No.2

본 연구에서는 1994년에서 2005년까지의 재무제표자료와 주요 경제지표자료에 의하여 외국은행 국내지점의 우리나라에의 진출규모에 영향을 미치는 요인과 외국은행 국내지점의 우리나라에서의 경영성과(수익성)에 영향을 미치는 요인을 파악하고자 하였다. 연구가설은 방어적 팽창가설, 기회비용가설, 국제적 경험가설, 은행활동기회가설, 자본적합성가설 등 5가지이며 가설검정은 외국은행 국내지점의 규모와 수익성관련 재무비율을 종속변수로 한 패널자료분석기법인 임의효과모형에 의하였다. 본 연구의 주요결과는 다음과 같다. 첫째, 외국은행 국내지점의 총자산과 우리나라와 외국은행 모국과의 교역규모는 유의적인 (+)의 관계를 보여 고객기업의 해외진출에 따라 은행들이 해외로 진출한다는 방어적 팽창가설은 채택되었다. 둘째, 외국은행 국내지점의 총자산과 외국은행 모국의 국내총생산(GDP)성장률과는 유의적인 (-)의 관계로 보여 모국에서의 경제성장률이 은행의 해외진출에 따른 기회비용이 된다는 기회비용가설은 채택되었다. 셋째, 외국은행 국내지점의 총자산순이익률과 국내진출경력을 나타내는 더미변수와의 관계는 (+)이였지만 유의적이지는 않았다. 따라서 해당 외국에의 진출년수가 빠를수록 수익성이 높다는 국제적 경험가설은 채택되지 않았다. 넷째, 외국은행 국내지점의 총자잔수익률과 국내에서의 은행활동기회요인에 해당하는 국내 예대마진과는 유의한 (+)의 관계를 보여 은행활동기회가설은 채택되었다. 다섯째, 외국은행 국내지점의 총자산순이익률과 외국은행의 자기자본비율은 유의한 (+)의 관계가 있는 것으로 나타나 자기자본규모가 클수록 자금조달금리가 낮아 수익성이 향상된다는 자본적합성가설은 채택되었다. In this study we investigate the performance of the branch of foreign banks in Korea. The performance to be investigated is two-fold. One is the total asset of foreign banks and the other is the return on asset of foreign banks in Korea. The time scope of our analysis is the period from 1994 to 2005, during which the banking market is opened to foreigners substantially. The research hypotheses to be tested are the defensive expansion hypothesis, the host opportunity cost hypothesis, the international experience hypothesis, the banking opportunity hypothesis and the capital adequacy hypothesis. To examine these hypotheses, we apply multiple regression analysis where the dependent variables are the natural log value of total asset and the return on asset. The independent variables are the natural log value of the trading volume between Korea and the foreign bank`s home country, the growth of gross domestic products in the foreign bank`s home country, the career year of foreign bank`s in Korea, net interest margin in Korea, the natural log value of equity of foreign banks, the growth of gross domestic product and the market share of foreign banks. Our empirical results are as follows. First, the regression coefficient of the trade amounts between Korea and the foreign bank`s home country is significantly positive, which supports the host defensive expansion hypothesis. Second, the regression coefficient of the growth of gross domestic products in the foreign banks home country is significantly negative, which supports the host opportunity cost hypothesis. Third, the regression coefficient of the career year of foreign banks in Korea is insignificantly positive, which rejects the international experience hypothesis. Fourth, the regression coefficient of the net interest margin in Korea is significantly positive which supports the banking opportunity hypothesis. Fifth, the regression coefficient of the natural log value of equity of foreign banks is significantly positive, which supports the capital adequacy hypothesis.

Disorders of Small and Large Intestine : Clinical Course of Intestinal Behcet`s Disease According To Ulcer Depth In Colonoscopy

( Min Cheul Kim ),( Jin Hong Kim ),( Kyung Rok Lee ),( Hak Woo ),( Jung Soo Zo ),( Sang Jo Choi ),( Sung Jae Sin ),( Jae Chull Hwang ),( Ki Myung Lee ),( Kwang Jae Lee ) 대한소화기학회 2007 SIDDS Vol.9 No.-

Background/Aims: Because of bleeding and perforation, intestinal Behcet`s disease (BD) is the one of the main causes of morbidity and mortality of BD. But clinical course of this disease was not clear. The aim of this study was to investigate the clinical course according to colonoscopic findings. Methods: We retrospectively reviewed the medical records and colonoscopic findings of 32 patients with intestinal BD. According to colonoscopic findings of ulcerative lesions, they were classified into three groups: aphthous ulcer (group A), shallow ulcer (group B) and deep ulcer (group C), and we analyzed clinical manifestations, number of ulcer, subset type of BD, medications, and operation & relapse rate among three groups. Results: Mean age at diagnosis was 40±0.7 years and 21 patients were female (M:F=1:2). Abdominal pain (32), diarrhea (22) and RLQ tenderness (15) were common symptoms. The number of complete, incomplete and suspected type was 3, 10 and 19 respectively. There was no difference in the diagnostic age of intestinal BD, subtypes of BD, and clinical symptoms among the three groups. The number of Intestinal ulcer was the most in group A, and group B and C were followed (p<0.047). The intestinal operation and steroid use rate were 0% and 0% (group A), 28.6%and 14.3% (group B) and 71.4% and 85.7% (group C), respectively, with statistical significance (p<0.046, p<0.005), and the relapse rate was 12.5% (group A), 15.4% (group B), and 63.6% (group C) (p<0.017). Conclusions: Deep ulcerations in intestinal BD were more frequently recurred, operated and more frequently use steroid than aphthous and shallow ulcerations.

셀룰로오스 재생 인조섬유의 화학개질에 관한 연구

이문철(Mun Cheul Lee),이명선(Myung Sun Lee) 한국염색가공학회 1999 韓國染色加工學會誌 Vol.11 No.1

고속휴대인터넷을 위한 TDD 방식의 광 중계 시스템 설계 및 분석

이경규(Gyung-Gyu Lee),오명근(Myung-Keun Oh),이인섭(In-sup Lee),윤창호(Chang-Ho Yoon),김경호(Kyoung-Ho Kim),송승준(Seung Joon Song),김환우(Whan-Wook Kim),이성춘(Seong-Choon Lee),류규태(Kyoo-Tae Ryoo),정은철(Eun-Cheul Jeong) 한국통신학회 2005 한국통신학회 학술대회 및 강연회 Vol.2005 No.4

Quinolone Alkaloids from Evodiae Fructus and Their Inhibitory Effects on Monoamine Oxidase

Han, Xiang-Hua,Hong, Seong-Su,Lee, Dong-Ho,Lee, Jung-Joon,Lee, Moon-Soon,Moon, Dong-Cheul,Han, Kun,Oh, Ki-Wan,Lee, Myung-Koo,Ro, Jai-Seup,Hwang, Bang-Yeon 대한약학회 2007 Archives of Pharmacal Research Vol.30 No.4

1-Methyl-2-undecyl-4(1H)-quinolone (1) was previously isolated as a selective MAO-B inhibitor from the Evodiae Fructus. Further bioassay-guided purification led to the identification of five known quinolone alkaloids, 1 -methyl-2-nonyl-4(1H)-quinolone (2), 1-methyl-2-[(Z)-6-unde-cenyl]-4(1 H)-quinolone (3), evocarpine (4), 1-methyl-2-[(6Z,9Z)-6,9-pentadecadienyl]-4(1H)-quinolone (5), and dihydroevocarpine (6). All the isolates showed more potent inhibitory effects against MAO-B compared to MAO-A. The most MAO-B selective compound 5 among the isolates inhibited MAO-B in a competitive manner, according to kinetic analyses by Lineweaver-Burk reciprocal plots.

Electrical properties of multilayer - structured organic electroluminescent device

Myung-Woon Choi,Shin Cheul Kim,Jin-Woo Lee,Jae Kyung Yang,Kwangho Jeong 한국진공학회 2001 한국진공학회 학술발표회초록집 Vol.- No.-

Rapid Propagation through Tissue Culture of Cudrania tricuspidata, Medicinal Plant

Lee, Cheul-Ho,Min, Ji-Yun,Jung, Ha-Na,Kim, Kyu-Sick,Choi, Myung-Suk The Korean Society of Medicinal Crop Science 2007 韓國藥用作物學會誌 Vol.15 No.5

An effective rapid propagation method was established through in vitro cultures of the medicinal plant, Cudrania tricuspidata. In vitro plantlets were obtained from in vitro germinated seeds. The various levels of cytokinins (BAP, Kinetin and TDZ) were tested on multiple shoot formation from plantlets. BAP (1.0 mg/l) treatment induced highest number of multiple shoots. Single shoot cultures gave higher initial shoot numbers than 5 shoots per culture. Among the various culture media, the shoot elongation was optimal on 2 MS basal medium without growth regulators. The IAA (2.0 mg/l) treatment induced highest number of roots. IBA (2.0 mg/l) treatment more promoted in vitro root growth than other concentrations. Rooted shoots were transferred directly to small pots with an artificial soil and successfully acclimatized.