흰쥐에서 갑상샘 절제 후 재생에 따른 세포 및 세포사이물질의 변화

황영일,정용환,이왕재,황덕호,유영복,김혜숙,장가용 대한해부학회 1997 Anatomy & Cell Biology Vol.30 No.4

학령전 아동의 정신적 현상에 대한 이해

김영환,이동화 경북대학교 1992 논문집 Vol.24 No.-

The purpose of this investigation was to see whether preschoolers(children of 3, 4, and 5 years of age) understand the fundamental ontological distinction between the internal mental world and objective physical reality. Real physical objects can be distinguished from mental entities on the basis of three criteria. (1) Behavioral-sensory evidence → whether the entity can be seen, touched, and physically acted upon. (2) Public existence→ whether other persons experience the entity. (3) Consistent existence→ whether the entity consistently exists over time. In consistent with previous research findings which tested Western children, the results demonstrated that even 3-year-olds were able to judge real and mental entities appropriately on the basis of the three criteria. The findings are discussed briefly in relation to the Piaget's characterization of young children as realists and recent researches on children's understanding of the mind.

주가변동성에 영향을 미치는 재무적 요인에 관한 연구

이용환(Lee, Yong-hwan),유영중(Yoo, Young-joong) 글로벌경영학회 2012 글로벌경영학회 학술대회 발표논문집 Vol.2012 No.1

본 연구는 주가변동성에 영향을 미치는 재무적 요인은 무엇인가를 규명하고, 이러한 재무적 요인이 주가변동성에 영향을 주는 정도가 기업특성에 따라 다르게 나타나고 있는지를 분석하고자 하는 것이다. 분석을 위하여 표본기업을 매출액증가율과 순이익증가율에 따라 4개의 집단으로 분류하였으며, 집단 간 변수의 차이를 검증하기 위하여 분산분석을 실시한 바, 자기자본순이익률과 자기자본영업이익 률을 제외한 모든 변수가 집단 간 유의적인 차이가 있는 것으로 나타났다. 4개의 집단에 대하여 주가변동률과 재무지표 사이의 회귀분석을 실시한 결과 집단 마다 유의성을 가지는 변수와 그 변수가 가지는 비표준화계수의 부호 및 크기에 차이가 있음을 알 수 있었다. 따라서 기업의 특성에 따라 재무비율이 주가변동율에 미치는 영향은 차이가 있을 것이라는 가설은 지지되고 있는 것으로 해석된다. The motivation of this study is identify financial factors influenced to volatility and analysis the effect of financial factors to volatility that is presumed different by business trait. For this study group sample business into four classes by increase ratio of sales and increase ratio of net profit. As a result of analysis of variance all the variables except ratio of net profit to equity capital and ratio of sales profit to equity capital shows resonable differences between four groups. Then it is expected that financial factors shows resonable relations to volatility at each four groups differently. As a result by regression it shows different resonable variables between four groups. And the size of unstandardized coefficients and symbols of unstandardized coefficients are different between four groups. So it is a

주가변동성에 영향을 미치는 재무적 요인에 관한 연구

이용환(Lee, Yong-hwan),유영중(Yoo, Young-joong) 글로벌경영학회 2012 글로벌경영학회지 Vol.9 No.2

본 연구는 주가변동성에 영향을 미치는 재무적 요인은 무엇인가를 규명하고, 이러한 재무적 요인이 주가변동성에 영향을 주는 정도가 기업특성에 따라 다르게 나타나고 있는지를 분석하고자 하는 것이다. 분석을 위하여 표본기업을 매출액증가율과 순이익증가율에 따라 4개의 집단으로 분류하였으며, 집단간 변수의 차이를 검증하기 위하여 분산분석을 실시한 바, 자기자본순이익률과 자기자본영업이익률을 제외한 모든 변수가 집단 간 유의적인 차이가 있는 것으로 나타났다. 4개의 집단에 대하여 주가변동률과 재무지표 사이의 회귀분석을 실시한 결과 집단 마다 유의성을 가지는 변수와 그 변수가 가지는 비표준화계수의 부호 및 크기에 차이가 있음을 알 수 있었다. 따라서 기업의 특성에 따라 재무비율이 주가변동율에 미치는 영향은 차이가 있을 것이라는 가설은 지지되고 있는 것으로 해석된다. The motivation of this study is identify financial factors influenced to volatility and analysis the effect of financial factors to volatility that is presumed different by business trait. For this study group sample business into four classes by increase ratio of sales and increase ratio of net profit. As a result of analysis of variance all the variables except ratio of net profit to equity capital and ratio of sales profit to equity capital shows resonable differences between four groups. Then it is expected that financial factors shows resonable relations to volatility at each four groups differently. As a result by regression it shows different resonable variables between four groups. And the size of unstandardized coefficients and symbols of unstandardized coefficients are different between four groups. So it is accepted that the effect of financial factors to volatility are different between four groups.

Rocuronium의 애별투여방법이 모지내전근의 이완에 미치는 영향

최영균,김승수,이원진,조광래,이상은,김영환,임세훈,이정한,이근무,정순호,김영재,신치만 인제대학교 2009 仁濟醫學 Vol.30 No.-

Objective : There are controversies in pnmmg technique of rocuronium whether it can or can't shorten the onset time. We want to compare the effects of two different priming doses and intervals of rocuronium. Materials and Methods : After giving propofol, 50 patients were randomly assigned to 5 groups. Group I received a placebo, followed 3 min later by rocuronium 0.6 mg/kg. Priming doses and intervals of Group II, Ill, N, V were 0.06 rng/kg and 2 min, 0.12 mg/kg and 2 min, 0.06 rug/kg and 3 min, 0.12 mg/kg and 3 min, respectively. Total dose of rocuronium was 0.6mg/kg. Train of four (TOF) count or ratio and 1st twitch height of TOF (T1) were monitored with 15 secondsintervals. TOF ratio of each groups just before bolus injection, duration for TOF count to reach zero and duration for Tl to reach 95% depression after bolus injection were compared. Results : Duration for TOF count to reach zero and duration for Tl to reach 95% depression after bolus injection were decreased in priming groups compared to Group 1 (P < 0.01) In group V, significant depression of TOF ratio just before bolus injection was seen (P < 0.05). Conclusion : Priming technique with rocuronium is effective method to shorten the onset of neuromuscular block. But priming dose of rocuronium itself could cause hypoxia and aspiration in awake patients and should be used carefully. Priming dose of rocuronium 0.06 mg/kg and 2 minutes interval maybe relatively safe method.

직장 Dieulafoy 병변으로 다량의 혈변을 보인 1 예

김태영;이상헌;김지현;배영환;정은주;김승만;지삼룡;설상영 인제대학교 2011 仁濟醫學 Vol.32 No.-

Dieulafoy’s lesion is very rare cause of gastrointestinal bleeding, Deiulafoy’s lesion is exposure of non ulcerative, abnormally large tortuous, thick- walled artery in the muscularis mucosa through a small submucosal defect. It is usullay found on stomach antrum and lesser curvature side of the proximal body, and possibly found on any sites throughout whole gastrointestinal tract, but rarely on rectum. The principal of treating Dieulafoy’s lesion was the surgical resection of lesion, but recently remarkable advances in endoscopic technique make endoscopic approach more popular. We report a case of rectal Dieulafoy’s lesion successfully treated with endoscopic hemoclipping in an elderly female patient.

Computer를 활용한 조경수목관리 Program개발의 기초적 연구

조영환,장영환,곽행구 木浦大學校 沿岸環境硏究所 1999 沿岸環境硏究 Vol.16 No.1

The main purpose of this study is to develop a computer-based management program of landscape woody plants, which make critical role in the outdoor environment. The program structure is composed of two functions ; Data input and Verification. The user interfaces employ pull-down menu so that the user can easily understand. The system components are as follows ; -Hardware : Pentium Processor 133MHz based system, 16MB RAM, 1.2GB Hard disk driver, SVGA Graphic Card -Software : Turbo C++ V3.0, TB(TaeBeck) V2.0 A case study is carried to verify the quality of the developed program, that is applied to the planted trees in Dorim Campus, Mokpo National University at Chungkae, Muan. The developed program as a result of this study has several merits. First, this program can operate under the environment of DOS and Windows. Second, it is possible to type and display Korea letters. Third, it is possible to verify multiply. But, the developed program should be integrated to overcome several difficulties such as Graphic Data and Data quality, etc.

취업 및 국가기술자격 취득 증진 방안 연구

이완영,백기영,김영환,장세봉 永同大學校 1997 硏究論叢 Vol.3 No.1

본 연구는 도시공학 전공 학생의 국가기술자격 취득 및 취업, 진학 등에 필수적으로 요구되는 도시공학 관련 기초지식을 연마하고 전공지식을 심화 교육함으로서 산·학·연 연계체계에 기초하여 도시공학 전공 학생의 취업증진을 도모하기 위한 종합적이고 구체적인 방안을 모색하고자 하는 것이다. 이를 위하여 본 연구에서는 사회수요에 부응하기 위한 기술교육의 강화, 국가기술자격 취득 제고, 현장실습제도 등 3가지 측면에서 취업증진을 위한 추진실적 및 문제점을 점검하고 이에 대한 향후 개선방안을 모색하고자 하였다. The purpose of this study is to search for the comprehensive and concrete methods of increasing the graduates' employment based on both fundamental and advanced knowledge concerned urban engineering major. For this , existing condition, problems and improvement of students employment are searched in 3 view points such as strengthening of technical education to follow the social demands, enhancement of acquisition of the national qualifying examination and making the best of the field training system.

흰쥐에서 사염화탄소에 의해 유도된 간 상해에 미치는 키토산 올리고당의 영향

이영돈,박승림,강소영,김세재,박지권,고영환 제주대학교 생명과학연구소 1999 제주생명과학연구 Vol.2 No.-

Chitosan is the deacetylated product of chitin. Chitosan and its derivatives have many properties that make them attractive for a wide variety of health applications. We reported recently that water soluble chitooligosaccharides have hepatoprotective effect on ethanol induced liver injury in the mouse. The current study examined the effect of water soluble chitooligosaccharides on CC1₄-induced liver injury in rats. Male Sprague-Dawley rats were orally treated with CC1₄without or with administration of 5% chitooligosaccharides. After 5 weeks after CC1₄treatment, the histological sections and the expression of mRNA of interleukin-12(IL-12), hepatocyte growth factor(HGF), and tumor necrosis factor(TNF- ) were examined. The liver section of rats supplemented with chitooligosaccharides showed attenuated effects of the necrosis, steatosis, cirrhosis compared with those of non-supplemented rats. The level of TNF- mRNA in CC1₄-treated rats were higher than those in the rats supplemented with chitooligosaccharides, while the levels of IL-12 and HGF mRNA were higher in the rats supplemented with chitooligosaccharides than those of in CC1₄-treated rats. These findings suggested that water soluble chitooligosaccharides may have a hepatoprotective activity against CCl₄-induced liver injury in rats.

공황장애 집단인지행동치료의 12개월 추적 연구

최영희,박기환,우영재,윤혜영 한국정신신체의학회 2003 정신신체의학 Vol.11 No.2