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이충식 충남대학교 의과대학 지역사회의학연구소 1992 충남의대잡지 Vol.19 No.2
The abnormal uterine bleeding is one of the most common symptoms of gynecologic patients. It can be divided by dysfuncitonal uterine bleeding(DUB) and organic uterine bleeding I investigated the clinico-pathologic relationships on the 618 endometrial specimens that submitted in the pathologic department of CNU College of Medicine due to abnormal uterine bleedingfrom Jan. 1991 to Feb. 1992. The age range was 17 to 72 years old. The causes of the abnormal uterine bleeding were DUB 413 cases(66.8%), conditions associated with pregnancy 107 cases(15.8%), chronic endometritis 36 cases(6.1%), endometrial polys 16 cases(2.6%), trophobastic disease 16 cases(2.6%), malignant tumor 2 cases(0.3%), and inadequate specimens 26 cases(4.2%), In DUB patients, anovulatory was 289 cases(69.8%), and ovulatory was 125 cases(30.2%). The endometrial hyperplasia and late secretory phase were the most common cause of the anovulatory and ovulatory uterine bleeding, respectively(66.1% ; 46.4%). In non-DUB patients, conditions associated with pregnancy were most common(52.2%).
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고희석,이충식 慶南大學校 附設 工業技術硏究所 1999 硏究論文集 Vol.17 No.-
본 연구에서는 최대전력수요를 예측하기 위하여 다중회귀모델을 구축하고, 질적변수를 가변수(Dummy Variable)로 만들어 설명변수로 사용하는 기법을 제시한다. 5가지 예측모델을 기온-습도, 불쾌지수와 가변수로 구성하고, 최대전력수요를 예측한 결과 가변수를 이용한 모델에서는 모델 4의 경우 예측 오차율이 3[%] 정도로 가장 양호한 결과가 나왔다. 따라서 질적변수를 가변수화 하여 설명변수로 이용하는 것이 가능하게 되었다. This paper is presented the method of peak load forecast based on multiple regression Model, and to make explanatory variable using dummy variable of qualitative variable. Forecasting model of five type was composed of the temperature-humidity, the discomfort index and dummy variable Forecasting result of Model 4 in the model using dummy variable was very good with about 3[%]. Therefore it was possible that use explanatory variable using dummy variable of qualitative variable.
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가토 동맥경화에서의 matrix metalloproteinase-3
이충식,김수령,정수진,나선영 충남대학교 의과대학 의학연구소 2002 충남의대잡지 Vol.29 No.2
A relation between atherogenesis and expression of a type of gelatinase, matrix metalloproteinase3 (MMP-3) was investigated in male New Zealand White Rabbits. Lesion development and immunohistochemical reaction for anti-MMP-3 were measured in the aorta. After 4 months of provocation of atherosclerosis with a hyperlipidemic diet, the rabbits were divided into a hyperlipidemic diet group, a normal diet group, and a hyperlipidemic plus phytoestrogen diet group. Normal feeding continued for an additional 4 months. Atherosclerotic lesions developed mildly during the provocation period (0.269mm^(2)). Lesion development progressed due to continuous hyperlipidemic diet (10.06mm^(2)) but was partly inhibited by phytoestrogen (0.997mm^(2)). A normal diet resulted in slight decrease in the lesion size (0.228mm^(2)). The immunohistochemistry for anti-MMP-3 showed a diffuse reaction along the endothelium and foamy cells within the lesion. The normal diet group revealed slight decrease the intensity compared to the other groups. Atherosclerosis induced by a hyperlipidemic diet can be inhibited by phytoestrogen in rabbits. A hyperlipidemic diet may stimulate MMP-3 in the aorta of rabbits.
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「케인즈」에 對한 硏究 (其 一) : 케인즈의 生涯를 中心으로 About his career
李忠植 大田工業高等專門學校 1971 論文集 Vol.8 No.-
Though 1930s was the most unfortunate period of the world economy, and fell into an unexampled height of depression, it is thought that in point of economical field we are fortunate to have one of the greatest economic theoricians and economic policy makers. Of all various circles such as workers, enterprise and politicians who tried to solve the economical crisis, it was the economists who did his best in examine such crisis, finding the causes and regaining its original states. In such crisis the effort of the economists brought many effects to the old (classic) economics so called "Tedious Science" which is hard to practice (bring realization):-"The General Theory of Employment, Interest and Money" by J. M. Keynes aiming at amending the old (classic) economic, extending its analisis. This so called "The General Theory" published in 1936 was considered to be equal to or morethan "The Wealth of Nations" by Adam Smith came out in 18th Century and "Das Kapital" by Karl Marx, 19th century in influencing on the mind of the modern economist and the economic policy makers. Before studying his theory, it will be significant that we examine his life, for I think the theory of J. M. Keynes can be applied to the modern economical society and will be the key of economic development. J. M. Keynes, a revolutionist of an economic theorist who influenced on both econmic theory and economic policy was born at Cambridge. His father was an excellent logician, his mother was once the mayer of Cambridge. His gifted qualities (nature) came much from his parents. After finishing Enden High School, be was graduated from Cambridge university at King's college Such courses was the most desirable one in England. His home life and school life made him noble characters, good manners tnd she behavior of traditional English gentlemanship. He majored in mathematics, philosophy and economics in the university. After graduation he delivered a lecture at his Almamate with the aid of his formerteacher Marshall. He wrote "Indian Curency and Finance" which was his first work. That was also the work which brought him into prominence, making the world know his talent. While he was in the ministry of Finance, he took part in the International Conference for the summing up of World War I, when his gifted ability for international relationship was recognized. He wrote "The Economic Consequences of thepeace". Which showed the importance of the world economy resulted by the war debt and indemnity. Shumpeter said that his work was a great artistic one which has practical wisdom and was absolutely logic but not cool-hearted. Keynes continued his life of writer, anong which "On probability in 1921, "A Revisions of the Peace" in 1922, "A Tract on Monetary Reform" in 1923, and "The End of Laisses-Faire" was notable. "A Treatise on Money in 1930 has brought him the greatest curency theorist. As in the preface of "The General Theory" in 1936 he did not consider it as the center of "A Treatise on Money", he replaced "The General Theory" by Multiplier". He was always gay, kind to his friends and enjoyed talking with them heartily, such character and personality are considered to come from his inborn and acquired character. He was interested in the stage arts such as drama and dances. It is thought it was his art-fancy which he married Lydia Lopokava, the Ballerian belonging to Russian Ballet. His champion-like character and the intelligence of England. mingled with his strong patriotism, he applied himself to developing his country in many ways. He wrote an available essay and economic theory for developing his country, in which always contained his champion-like, English, patrio tism. Such ideas, filled in his mind, Served for the world's economy amd then Can be applied for developing the economy of his Country and was devoted to developing the world economically. I hereby think it significant for me to research for his theory after studying his life.
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이철우,고희석,최종규,이충식 慶南大學校 附設 工業技術硏究所 1995 硏究論文集 Vol.13 No.-
본 논문에서는 설명변수로서 기온을 사용하여, 이 기온 변수를 다시 변수변환을 시키고, 시간대별로 모델을 구성하여 최대전력수요를 예측하는 방법을 제시한다. 부하를 설명하는 변수로서 적합한 요소를 얻기 위해 여러 예측모델을 구성하고, 그 예측치를 구한다. 그 결과 기온만을 고려한 모델의 예측정도가 다소 양호했으므로 기온만을 변수변환을 실시하고 하루를 3개의 시간대로 나누어 평일에 대해서만 각 시간대별로 모델을 구성하여 예측치를 구한다. 또한 각 시간대별 예측치 중 가장 큰 값을 하루의 최대수요 예측치로 이용한다. 일반적으로 중회귀 모델에 의한 예측의 경우 오차율을 3%이하로 되는 것을 고려할 때, 여름을 제외한 다른 모든 계절에서 예측 오차율이 1%정도로 양호한 정도를 얻을 수 있었다. 여름의 경우는 2%정도의 예측정도를 얻었다. Maximum power demand forecasting method executing variable change and composing model classified by time period was presented. And temperature as explanatory variable was used. Forecasting model for seeking suitability explanatory variable was constructed. And forecasting value was obtained. Forecasting value was obtained. Forecasting accuracy of model using temperature only was good. Therefore, power demand operating variable chang for temperature only and composing three models classified by time period for weekday was forecasted. Also, Maximum demand forecasting value of a day was the bigest value among of three forecasting value. Generally, In case of load forecasting using multiple regression model, Percentage error forecasting was below 3%. Percentage error load forecasting of all seasons except summer was good below about 1%. Percentage error load forecasting of summer was about 2%.
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사례연구: 음주운전자의 혈중알코올농도 역추산 프로그램 개발과 대법원 판례 재해석
이충식,안필상,조주익 한국과학수사학회 2020 과학수사학회지 Vol.14 No.4
음주운전시간과 혈중알코올농도(BAC) 결정시간에 차이가 발생할 경우, 신뢰성 있게 측정된 BAC 로부터 음주운전시간의 BAC를 역행하여 추정할 필요가 있다. 그 결과에 의해 음주운전자는 법적처벌 또는 행정처분을 받을 수 있다. BAC 역추산에서 다양한 과학적 요인들이 고려되어야 한다. 음주운전시간과BAC 결정시간이 BAC 상승기 또는 하강기인지에 따라 역추산 결과가 매우 다를 수 있으며, 음주종료후BAC 피크도달시간도 역추산에 영향을 준다. 이 연구는 Matlab GUI와 R shiny를 이용하여 음주종료시간과 BAC 결정시간에 따라 음주운전시간이 BAC 상승기 또는 하강기인지를 결정하고 BAC를 역추산할 수있는 프로그램을 개발하였다. 사건사례들을 검토하고 대법원 판례를 재해석하였다. 역추산된 BAC가 상승기 또는 하강기에 있는지를 고려한다면 더욱 합리적인 행정처분과 형사처벌을 집행할 수 있을 것이다.
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