β-Fluoro-α-phenylpyrrole 유도체의 합성에 관한 연구

郭炅喆,吳賢哲,鄭悳商,李英行,白承和,金鍾洙,蔡奎允 濟州大學校 基礎科學硏究所 2001 基礎科學硏究 Vol.14 No.2

플루오르가 선택적으로 치환된 유기화합물은 모체 화합물 보다 향상된 생리활성을 지니는 경우가 많이 보고 된바 있다. 이는 할로젠족 원소인 플루오르의 큰 전기음성도 때문에 비교적 강한 탄소플루오르 결합 형성 및 증가된 리피드 용해도 때문이다. Pyrrole과 그의 유도체들은 폴리머, 의약품 그리고 염료 등에 광범위하게 사용되어 왔고 오래 전부터 잘 알려진 화합물이다. 최근 자연계에서 산출되거나 합성 가능한 플루오르가 선택적으로 치환된 fluoropyrrole 유도체들은 진통제, 소염제 및 살균제 등으로 다양하게 이용될 수 있음이 알려져 있기 때문에 fluoropyrrole 유도체의 합성에 대한 연구가 활발히 진행되고 있다. 일반적으로 플루오르는 반응성이 매우 커서 유기화합물에 대한 선택적인 플루오르기의 도입이 극히 제한적이다.

청바지제품 세분시장 내 가격-품질 평가집단 추출에 관한 연구 : 결합분석과 mixture model를 이용하여 Based on Conjoint analysis and mixture model

곽영식,이진화 한국의류학회 2002 한국의류학회지 Vol.26 No.11

The purpose of this study was to identify the consumers who use the level of price as the indicator of the product quality. In order to implement the purpose of this study, Jeans market had been segmented by the mixture regression model, and price response function was calibrated for each segment. Based on the types of price response function, segments were allocated into one of two groups the group using the level of price as the quality indicator or the group not using the level of price as that. Then, characteristics of both groups were compared in terms of product attributes and demographic variables. Data were collected from the sample of the 230 undergraduate and graduate students in Seoul. For the data analysis mixture regression model, conjoint analysis and t-test were used. As a result, jeans market was divided into 5 segments. Segment 1,2,3 were allocated into the group not using the level of price as the quality indicator while segment 4,5 were done into the other group. Significant differences existed between two groups in product atttibutes, not in demographic variables. Mixture model and conjoint analysis were proved to be an effective set of tools in market segmentation.

國內 三種의 自生 Chrysanthemum屬 植物의 開花期 調節에 關한 硏究

이영헌,진선섭,곽병화 한국화훼연구회 1996 화훼연구 Vol.5 No.1

Korean wild Chrysanthemum indicum, C. boreale and C. Zawadskii have been examined to study on their flowering habits under different environmental regimes in order to use them hopefully for beneficial cultural purposes by controlling the planting time and short - day treatments. The experimental results were as follows : 1.The earlier the planting time, the greater the stem length, plant height and the number of flowers produced. Flowering time was delayed more as the planting time was set behind, although the difference in the time required for flowering was almost negligible. 2.When the duration of short- day treatment was longer (namely the treatment is given earlier than the ordinary), Plant height became shortest with 7-hour long-day treatment. C. zawadskii showed the similar response to the other two species. The short-day treatment resulted in significant reduction in plant height compared with the control. 3.As the duration of short-day treatment became shorter, the number of flowers produced per plant on both C. indicum and C. boreale were increased, namely the number was increased as the treatment for C. zawadskii started later. The short-day treatment did not seem to influence very much on enhancing the flowering. It seemed to be due much to the summer hot temperature. Neverthless, C. boreale exhibited most typical nature of the short-day plant whose flowering was promoted by the short-day treatment.

鐵筋 콘크리트 有孔보의 擧動에 관한 실험적 연구

이화직,최종만,하영철,곽윤근 金烏工科大學校 1993 論文集 Vol.14 No.-

Openings through beams are required for the passage of utility ducts and pipes, and they are frequently encountered in the design of modern buildings. They are particularly important in multistory buildings where the use of openings in beams can mean lower story heights, leading in turn to a multiplicity of savings. Therefore, the designers are often faced with the necessity of providing adequate openings in the buildings. However, provision of openings may cause problems of excessive cracking and deflection, and may severely affect the strength of a beam. An experimental investigation is carried out on ten reinforced concrete beams with rectangular openings. The size of opening and it's location are considered as major variables. The specimens were tested under two point loading. Loads were usually applied in steps of 0.5 ton up to failure to observe the crack initiation and propagation, initial diagonal cracking midspan deflection, concrete strain and reinforcement strain.

鐵筋 콘크리트 有孔보의 거동에 관한 실험적 연구(Ⅱ)

최종만,이화직,하영철,곽윤근 國立金烏工科大學校附設生産技術硏究所 1994 産業技術開發硏究 Vol.10 No.-

Openings through beams are required for the passage of utility ducts and pipes, and they are freqently encountered in the design of modern buildings. They are particularly important in multistory buildings where the use of openings in beams can mean lower story heights, leading in turn to a multiplicity of savings. Therefore, the designers are often faced with the necessity of providing adequate openings in the buildings. However, provision of openings may cause problems of excessive cracking and deflection, and may severly affect the strength of a beam. An experimental investigation is carried out on twelve reinforced concrete beams with square openings. The size of opening, and it's location are considered as major variables. The specimens were tested under two point loading. Loads were usually applied in steps of 0.5 ton up to failure to observe the crack initiation and propagation, initial diagonal cracking, midspan deflection, concrete strain and reinforcement strain.

고립성 직장결핵 3예

이동수,정강욱,황도연,이형화,김대현,김영성,곽동협 대한내과학회 2003 대한내과학회지 Vol.64 No.1

저자들은 장결핵 중 발생 부위상 드문 곳으로 알려진 직장에 발생한 고림성 결핵을 3예 경험하였기에 문헌고찰과 함께 보고하는 바이다. Isolated rectal tuberculosis commonly involves sigmoid, ascending, or transverse colon. Rectal involvement in tuberculosis is uncommon and poorly characterized. Isolated rectal tuberculosis was defined as focal lesions of rectum in the abscence of demonstrable lesions in the small and large bowel. Diagnosis of rectal tuberculosis was based on characteristic endoscopic appearance of lesions, histopathologic feature of tuberculosis in biopsy material and response to antitubercular therapy. Three patients with isolated rectal tuberculosis were seen at Kwak's hospital. The lesions observed was classified according to macroscopic morphology as follows: ulcerative, hypertrophic and ulcero-hypertrophic. Clinical manifestations were non-specific and consists of rectal bleeding, fever, weight loss, constipation and abdominal pain. One of the three patients had coexisting tuberculous pleurisy. Response to antitubercular chemotherapy was good. (Koeran J Med 64:96-100, 2003)

이름글자를 활용한 그룹게임이 유아의 음운인식과 읽기능력, 읽기흥미에 미치는 영향

곽경화(Kwak Kyeong-Hwa),김영실(Kim Young-Sil) 한국열린유아교육학회 2012 열린유아교육연구 Vol.17 No.3

본 연구의 목적은 유아에게 가장 친숙한 글자인 이름글자를 활용한 그룹게임을 구성하고 이를 적용하여 유아의 음운인식과 읽기능력, 읽기흥미에 미치는 교육적 효과를 밝히는 것이다. 연구대상은 전라북도 K시에 소재하고 있으며 규모와 지역적 특성이 비슷한 2개 어린이집의 만 4세 유아 38명으로, 본 연구에서 개발한 이름글자를 활용한 그룹게임을 10주간 실험집단에 실시하였다. 연구결과 이름글자를 활용한 그룹게임은 음운인식, 읽기능력, 그리고 읽기흥미에 모두 긍정적인 영향을 미치는 것으로 나타났다. The purpose of this study was to develop group games using young children’s name letters and to investigate the effects of the group games on the their phonological awareness, reading ability, and reading interest. The subjects of this study were 38 four-year-old children from two child care centers in K city, Chulabuk-do. They had similar backgrounds in terms of parents’ socio-economic status and class size. For the children in the experimental group, the group games using young children’s name letters specially developed for this study were applied for 10 weeks. It was found that the group game using young children’s name letters had positive effects on their phonological awareness, their reading ability, and their reading interest.

유아의 읽기능력에 영향을 미치는 변인에 관한 구조모형 분석

곽경화 ( Kyeong Hwa Kwak ),김영실 ( Young Sil Kim ) 한국유아교육학회 2015 유아교육연구 Vol.35 No.4

본 연구의 목적은 환경인쇄물 읽기능력, 어휘력, 낱자지식, 음운인식과 읽기능력의 관계를 논리적으로 연결하여 인과적 경로를 확인하는 것이다. 연구대상은 전라북도 G시에 소재하고 있는 7개의 유아교육기관에 재원 중인 만 4세반 유아 217명이다. 연구결과 첫째, 환경인쇄물읽기능력은 유아의 읽기능력에 직접적인 영향을 미치는 것으로 나타났다. 어휘력은 읽기능력에 직접적인 영향을 미치지는 않았으나 낱자지식과 음운인식을 통해서 간접적으로 영향을 미치는 것으로 나타났다. 낱자지식과 음운인식은 읽기능력에 직접적인 영향을 미치는 것으로 나타났다. 둘째, 환경인쇄물 읽기능력과 읽기능력 간의 관계에서 낱자지식과 음운인식이 부분매개역할을 하는 것으로 나타났고 어휘력과 읽기능력 간의 관계에서 낱자지식과 음운인식이 완전매개역할을 하는 것으로 나타났다. 본 연구의 결과는 유아를 위한 효과적인 읽기지도 프로그램 구성 시 기초 자료로 활용될 수 있을 것이다. By logically connecting the relations among environmental print reading ability, knowledge of vocabulary, letter knowledge, phonological awareness, and reading ability, this study examines the causal path between these variables. The subjects of this study were 217 four-year-old children from 3 kindergartens and 4 day care centers located in K city, Jeollabukdo. The results are as follows. First, it was shown that environmental print reading ability had a direct impact on young children’s reading ability. Knowledge of vocabulary didn’t have a direct bearing on reading ability, but had indirect influences through letter knowledge and phonological awareness. Both letter knowledge and phonological awareness were shown to have direct impacts on young children’s reading ability. Second, letter knowledge and phonological awareness partially mediated the relationship between environmental print reading ability and young children’s reading ability. Letter knowledge and phonological awareness completely mediated the relationship between knowledge of vocabulary and young children’s reading ability. These results can be used as a basic material in developing effective reading program for young children.

Da Vinci SP single-port robotic surgery in benign and malignant gynecologic tumors: initial experience with 100 cases in single institution

( Young Hwa Kwak ),( Hwajung Lee ),( Kieun Seon ),( Youngjoo Lee ),( Yong Jae Lee ),( Jung-yun Lee ),( Eun Ji Nam ),( Sunghoon Kim ),( Young Tae Kim ),( Sang Wun Kim ) 대한산부인과학회 2021 대한산부인과학회 학술대회 Vol.107 No.-

A Proposal on the Methodology of External Emission Reduction Potentials in Building Sector for Vitalizing GHG Emissions Trading Scheme

Kwak Young-Hoon(곽영훈),Shin Sung-Eun(신성은),Park Jin-Young(박진영),Do Hwa-Yong(도화용) 한국태양에너지학회 2016 한국태양에너지학회 학술대회논문집 Vol.2016 No.3