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.

作圖 모델링을 위한 GIS의 應用에 關한 硏究

趙榮煥,郭幸求,張榮桓 木浦大學校沿岸生物硏究所 1991 沿岸生物硏究 Vol.8 No.1

GIS는 資料의 入力過程에 있어서 현재 주로 使用하고 있는 Digitizer를 利用한 방식이 기술을 요하고 時間이 많이 요구된다는 점을 勘案 Scanner, Video Camera등으로 개선 된다면 짧은 시간에 정확하고 신속하게 利用者의 要求에 부응한 地圖, 圖表를 신속하게 製作하는데 있어서 획기적이라 할 수 있다. GIS의 利用은 그 기능의 우세함으로 地圖를 다루는 모든 分野에 要求된다고 판단되며 특히 環境計劃 分野의 利用에 절실히 要求된다. 手作業으로는 거의 불가능한 地形의 3차원적 표현기법으로 地形地勢를 理解하고 분석하는 데 크게 기여할 수 있다고 판단된다. 地圖보관에 있어서도 컴퓨터의 저장 용량이 크게 확대됨에 따라 종래 인쇄지도의 보관문제에 따른 공간점유 문제를 해결할 분 아니라 地圖의 檢索이 즉시적이다. GIS의 과정은 Capture Data --> Resister Map Base --> Interpret Data --> Convert data --> Store Data in computer --> Process Data --> Display Result로 표현 할 수 있으며, 이를 입력(입력(Input))과 출력(Output)의 부분으로 나누어 볼 때 입력의 자료는 기존 圖面, 現地 測量, 人工衛星 등을 通해 얻은 평면 資料와 이에 수반되는 각종 情報를 入力資料로서 사용하게 되며, 出力의 方法으로는 Monitor display terminal, Printer, Plotter 등을 통하여 圖面(Map), 圖表(Table and Figures)가 주된 방법이라 할 수 있다. 이는 결국 공간통계(Spatial statics)를 분석의 방법으로 하여 Computer Mapping, Data Base Management 등의 過程을 거쳐 意思決定에 요구되는 모델 및 정보를 제공하는 일이라 말 할 수 있다. Geographical Database = Position + Topoloty + Attribute 라고 말 할 수 있으며 이 경우 Position은 평면상태에서의 位置, 面積의 槪念이라 할 수 있으며 Topology의 경우 地形의 입체성(3 dimension)등을 표현하는 경우를 말하며, Attribute는 情報의 표현상태를 Symbolize한 것이라고 해석할 수 있다. 특히 圖面을 대상으로 한 컴퓨터 입력의 방법은 기초적으로 도면의 구성이 점(Point), 선(Line)으로 이루어 짐을 감안 할 때 이를 계량적인 방법으로 다룬다는 것을 추론할 수 있다. 입력(Encoding)의 구체적인 방법에 나타난 2가지 방법 Raster base (Grid structure), Vecter base (polygon, line structure)에 대한 사항은 두가지 방법의 장단, 점의 보완 방법에 대한 심도 있는 연구가 절실하다고 본다. 예를 들면 Grid Structure의 경우 자료(Data)의 통계적 처리가 용이한 반면 Grid Display의 면에서 인위적인 요소를 많이 담고 있어 이를 사실과 가까이 접근하고자할 때의 Volume이 커지는 반면 Line Structure의 경우 이와는 반대로 地形의 실제적인 表現은 가능하나 이를 分析의 次元에서의 統計處理 方法에 많은 장해요소가 있다는 사실을 파악할 수 있었다. The purpose of this study forcused on the application of GIS(Geographic Information System) on the habtat analysis of Hugag(Rythmopes inerticlatus) Through this application, this study tried to understand the concept and theory of GIS which is new technology in Korea. GIS is revolutionizing how we handle maps. Historically, maps have been used for navigation through unfamiliar terrain and seas. With this context, preparation of maps accurately locating geographic features became the primary focus of attention. More recentry, analysis of mapped data for decision-making has become an important part of resource and land planning. GIS technology provides a means for quantitative modeling of spatial relation ships. GIS contains hardware and software for data input, storage, processing, and display of computerized maps, the processing can be grouped into four categories : computer mapping, spatial database management, spatial statistics, and cartographic modeling. The use of digital processing allows for rapid processing allows for rapid processing of large volums of data while offering data storage, manipulatively analytical and display capabilities that are not possible through the uses of manual methods. Spatial statistics seeks to characterize the geographis pattern or distribution of mapped data. This approach differs from traditional statistics as it describes the spatial variation in the data rather than distilly the data for typical responses that are assumed to be uniformaly distributed in space. This radical change in map analysis has promoted a more complete intregration of spatial information into the decision-making process.

都市公園의 合理的인 管理方案에 關하여 : A Case Study of Yudal-san Park in Mokpo City

張榮桓,趙榮煥 木浦大學校 沿岸環境硏究所 1993 沿岸環境硏究 Vol.10 No.1

The purpose of this thesis is to suggest reasonable management program for urban parks. Yudal-san Park in Mokpo city is selected as a case study project. The results of this thesis can be summarized as follows : First, management infrastructure needs reestablishment. Specifically, it is necessary to establish the section in users' management position. Secondly, professions in landscape architecture and recreation are need to be employed. They will improve landscape management and users' management program. Thirdly, management budget programs are need to be expanded. Particularly, it needs to develop profitable budget programs through the expansion of park facilities and goods. At fourth, encourage the citizen participation to park management. It is helpful to establish the volunteers' participation program in park management. At fifth, maximize park use. To do this, it is necessary to rearrange the public traffic system and to purchase private lands in the Yudal-san park. At sixth, develop park management inventory. Specifying, trees, shrubs, grasses, facilities etc. This inventory will served as a major data base for park management budget programs.

속도 보간에 따른 실린더내 유동장 해석

정환수(Hwan-Su Jeong),최수진(Su-Jin Choi),정구섭(Gu-Seop Jung),장영준(Young-Jun Chang) 한국자동차공학회 2000 한국자동차공학회 지부 학술대회 논문집 Vol.- No.-

The analysis of double-exposed photographic plate can be carried out either by Young's fringe analysis or by a digital image processing technique in Particle Tracking Velocimetry. In this Study, we used digital image processing to two images in one frame for analyzing in-cylinder flow fields, and The result of PTV(Particle Tracking Velocimetry) was compared with it of PSV(Particle Streak Velocimetry). Additionally, This technique was verified by three different calibration methods. One is interpolation by invert distance, another is interpolation by area ratio, the third is interpolation by Taylor series 1st.<br/> In PTV, The error range of curvature is about 1.4∼5 %. The results among three interpolation methods were similar in whole flow fields. Finally, in the comparison of PTV and PSV, PTV can be applicable of the analysis and the flow visualization on in-cylinder flow fields.

음운 변화에 대한 과도교정의 양상 고찰

배영환(Bae, Young­hwan) 한국언어문학회 2017 한국언어문학 Vol.100 No.-

The primary purpose of this study is to identify the relationship between phonological change in the Korean language and its hypercorrection. To this end, this study further clarified the idea of hypercorrection, conditions, scope, etc. which had been rather unclear so fareto explain the relationship between phonological change and hypercorrection. To test the idea, conditions, etc. the study extracted hypercorrection examples in the Korean central dialect and investigated in which pattern the hypercorrections appeared in the actual literature by setting it as its secondary purpose. To this end, examples were extracted and quantified centering on palatalization and labialization and their development patterns were discussed. As a result, the hypercorrections in Korean central dialect were limited to the phonological change delivered from regional dialects. In this study, hypercorrection was recognized when the phonological environments were identical between the phonological change input part and alternant output part. In addition to this, the study discussed the possibility of different hypercorrection patterns according to social prestige. In this type of transformation under social prestige, the study looked at regions, social classes and vocabulary types to investigate different realization of hypercorrections. The Korean central dialect, first of all, was regarded more prestigious than regional dialects. It was also found that the language reflecting the upper class, rather than the language reflecting the mid class; and Sino­Korean words, rather than the native words in terms of lexicon type; were more socially prestigious thus, showing different hypercorrection patterns. Lastly, it was discussed that hypercorrection immediately appeared from the moment of phonological change or its acceptance and hypercorrection also occurred during active phonological changes or near the completion stage.

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.

도시공학 핵심과목의 심화교육 프로그램 개발에 관한 연구

이완영,백기영,김영환,장세봉 永同工科大學校 1996 硏究論叢 Vol.2 No.1

본 연구는 핵심과목 요목의 작성과 난이도별 문제은행의 지도과정, 핵심과목에 대한 자율학습 문제은행을 데이타베이스화하여 상시 활용화 추구, 교수와 학생의 상호 협동시스템에 의한 학습방법론 도출을 시도하였다. 시론적 성격에 한정되어 있긴 하나 본 연구는 협동시스템을 기반으로한 자율학습모형을 구축함으로써 학습과 교육효과 제고, 협동심과 선의의 경쟁을 매개로 하는 생활구현, 취업대비 등의 목표에 기여하는데 의의가 있다. This paper examines that drawing up a syllabus of core courses and an item pool classified by the degree of difficulty, and that inquiring practical use an databased item pool, and that proposing study method by cooperative system between students and professors. The result of this study is expected to contribute to studying, life, and taking up an occupation by constructing autonomous study model founded the cooperative system.

교정의사가 선호하는 측모의 유형에 따른 특징적 양상에 관한 연구

김영진,김정환 대한치과교정학회 2001 대한치과교정학회지 Vol.31 No.5

교정 치료의 목표를 설정하는 데에 있어서 여성의 아름다운 측모에 관한 정확한 이해는 필수적인 요소이다. 본 연구에서는 치과교정의사 간에 심미안의 차이가 있는지를 조사하고, 치과교정의사에 의해 선호되는 여성의 심미적인 측모를 선정하여, 이들이 facial convexity의 정도에 따라 심미적인 측모를 구성하기 위한 특징적인 양상을 보이는지를 조사하고자 하였다. 먼저 교육적 배경이 다른 5명의 치과교정의사로 하여금 133명의 20대 여성의 측모 사진을 이용하여 선호도에 따라 심미적인 측모를 채점하도록 하였다. 심미적인 측모를 가졌다고 판정된 35명의 측모 두부 방사선 사진의 투사도를 작성하여 연조직 분석을 시행하였고, 이를 facial convexity의 정도에 따라 convex군(G-Sn-Pg≥9˚)과 straight 군(G-Sn-Pg<9˚)의 두 subgroup으로 세분화하였다. 심미적인 측모를 선정하는 데에 있어서의 객관성 여부를 조사하기 위하여 5명의 치과교정의사 간의 심미안의 차이에 대한 동질성 검정을 시행하였는데 미의 기준이 주관적임에도 불구하고 치과교정의사간에 측모 선호 양상은 통계적으로 유의한 차이가 없었다(p<0.05). 안모 형태의 차이에 따라 세분된 두 subgroup간의 코의 전후 관계를 나타내는 N-Pg-Sn, N-Pg-Pn에서 통계적으로 유의한 차이를 보였고(p<0.05), nasolabial angle, labiomental angle, 그리고 수직적 분석 항목에서 통계적으로 유의한 차이가 없었으며(p<0.05), 상하순 돌출도를 분석한 결과에서 H-angle, Ls to E line, Li to E line, Pg to Sn perp.에서 통계적으로 유의한 차이를 보였으나 Sn-Pg line와 Sn perp. 에서부터의 거리에는 차이가 없었다(p<0.05). 이상의 결과에서 안모 형태(facial pattern)에 따라 심미적인 측모를 구성하기 위한 특징적인 양상의 차이가 존재하며, 이는 특히 코와 상하순, 그리고 턱의 전후방적인 위치에 따라 크게 좌우됨을 알 수 있었다. The perception of facial esthetics is critically important to orthodontists. A viewpoint to facial esthetics is influenced by various factors and dependent on the perception of observer. The purpose of this study was to examine the differences regarding esthetic viewpoints among orthodontists, to identify attractive profiles preferred to orthodontists and to present the characteristic aspects of attractive profiles upon the degree of facial convexity. 35 Persons whose faces were judged as attractive one by 5 orthodontists were selected out of 133 young Korean women. Soft tissue profiles identified as a good-profile group were measured and analyzed. And then according to the facial convexity, good-profile group was subdivided to convex (G-Sn-Pg9˚) and straight (G-Sn-Pg<9˚) groups for the purpose of this study. There were statistically no significant differences regarding esthetic viewpoints among 5 orthodontists(p<0.05), even if there exists prevailing concept that the standard for facial esthetics is substantially subjective. N-Pg-Sn and N-Pg-Pn, measured for determining anteroposterior relationship of midfacial convexity, showed significant differences statistically between 2 subgroups (p<0.05) while nasolabial angle, labiomental angle, and vertical measurements didnt show statistically significant difference between 2 subgroups (p<0.05). And all the measurements related to lip position, H-angle, Ls to E line, Li to E line and Pg to Sn perp., had statistically significant differences between 2 subgroups (p<0.05). The results indicate that the attractive facial profile has different characteristics to be recognized as a good facial pattern, which depend strongly on anteroposterior position of nose, upper and lower lips, and chin.