김수환 작품연구 : 자연소재를 조형언어로 창조하는 과정연구(본인작품을 중심으로)

김수환 한남대학교 사회문화·행정복지대학원 2016 국내석사

폴리(에틸 아크릴레이트) 아이오노머의 기계적 성질과 형태학

金秀桓 조선대학교 2003 국내석사

Ionomers are ion-containing polymers that have a relatively small amount of ionic groups along polymer backbone chains. Since their first appearance ca. 38 years ago, ionomers have been studied extensively because they exhibit unique physical properties owing to the ionic interaction. It has been well known that ionic groups in ionomers tend to aggregates, since they are in a matrix of dielectric constant, thus forming ionic aggregates, so-called multiplets. The rigidity of the multiplets depends on the strength of the ionic interactions between ionic groups, and the mobility of chains surrounding the multiplet is reduced. When the multiplets are sufficiently dense so that the regions of restricted mobility surrounding each multiplet overlap, there by larger regions of restricted mobility, so-called clusters, from. The cluster regions show their own T_gs, i.e. cluster T_g, which is higher than the T_g of matrix phase. In the present study, we investigated the dynamic mechanical properties and morphology of poly(ethyl acrylate) ionomers by dynamic mechanical thermal analysis (DMTA) and small-angle x-ray scattering (SAXS) techniques. This thies consists of five chapters. In the first chapter as an introduction section, the history and general characteristics of ionomers are presented. the second chapter is glass transition temperatures of poly(ethyl acrylate) ionomers neutralized with various cations were explored in terms of ion content and the type of cations. In that section, it was found that the matrix T_gs increased linearly with increasing ion content, and that the type of cations did not change the matrix T_gs. On one hand, in the plots of the cluster T_gs vs. cq/a, it was observed that the T_gs were superimposed on the one line. In addition, the small-angle x-ray study showed that with increasing the radius of cation the distance between scattering centers increased.Thus it was postulated that the restricted mobility layer became thickr slightly with increasing the size of a cation. In the third chapter is effects of two ionic groups in an ionic repeat unit on the properites and morphology of poly(ethyl acrylate-co-itaconate) ionomers was investigated. It was found that the P(EA-co-ITA) ionomers are much more well-clustered material, compared to corresponding polystyrene ionomers. Which allow the ITA units to from a number of multiplets, leading high clustering. It was also found that the difference between the matrix and cluster T_gs is in the range of ca. 170 - 180 ℃. In the last fourth chapter, the degree of neutralization of poly(ethyl acrylate-co-acrylate) ionomers were investigated using DMTA.

옻나무 부위별 성분과 종실의 항산화활성에 관한 연구

김수환 순천대학교 대학원 2018 국내박사

Rhus verniciflua (R. verniciflua ) is one of six species of lacquer trees in Korea. Among the parts of R. verniciflua, only bark and xylem have been used as food materials because little information about chemical components of the other parts was known. This study was conducted to compare chemical components in different parts of R. verniciflua and to evaluate antioxidant potentials of ethanol extracts from the seed. The proximate composition, mineral components, urushiol, total polyphenol, and total flavonoids were compared in different parts of R. verniciflua . And antioxidant substances in the ethanol extracts from the seed of R. verniciflua were isolated by chromatographic separation. The antioxidant activity of the separated fractions were also compared. The results were as follows. 1. The contents of crude protein in the leaf and shoot of R. verniciflua were higher than those of stem and seed. The crude fiber contents in the stem and seed were higher than the other part of R. verniciflua . The nitrogen free extracts in the parts of R verniciflua were ranged from 16.75% to 42.70%. 2. Among the mineral components in R. verniciflua , the content of potassium was the highest, followed by magnesium, sodium, iron, and manganese. 3. The content of urushiol in the shoots of R. verniciflua was th highest by 2680.05 mg%, followed by leaf(2086.37 mg%), stem (2174.71 mg%), and seed (7.47mg%), the lowest. 4. The contents of total polyphenols in the shoots of R. verniciflua was the highest by 413.14 mg GAE/g, followed by leaf (63.80 mg GAE/g), stem (73.36 mg GAE/g), and seed (55.63 mg GAE/g). 5. The content of total flavonoids in shoots of R. verniciflua was the highest by 177.80 mg QE/g, followed by leaf (163.78 mg QE/g), seed (53.96 mg QE/g), and stem (51.62 mg QE/g). 6. In the assay of antioxidant activities according to ethanol concentration, 50% ethanol was determined as an appropriate extracting solvent. 7. In the result of cytotoxic assay, all treatments of 50% ethanol extracts from Rhus verniciflua did not show cytotoxic activities in a time and dose-dependent manner. 8. Among the solvent partitions of 50% ethanol extracts from R. verniciflua , the ethyl acetate portion showed the highest antioxidant activity. Eleven fractions were obtained from the ethyl acetate portion using silica-gel chromatography. Among them, fraction number(Fr) from 2 to 7 showed high antioxidant activities. Among nine sub-fractions separated from the Fr 2-7, sub-number 4 showed the highest antioxidant activity. 9. The purified 3 fractions were obtained from the sub-number 4 and peak No.2 showed the highest antioxidant activity. The purified compound of peak No.2 was identified as fisetin by the results of 13C-NMR, 1H-NMR and LC-MS.

초.중등학생들의 수학적 문화형성을 위한 교수/학습 모형 개발연구/d김수환 著

김수환 한국교원대학교 1996 국내박사

Tissue engineered alveolar bone regeneration by periodontal ligament stem cells in canine peri-implant defects model

김수환 서울대학교 대학원 2009 국내박사

Adaptive quantization watermarking to reduce perceptual distortion

김수환 서울大學校 大學院 2005 국내석사

Phenotypic characterization of cementum-derived cells in human

김수환 서울대학교 대학원 2004 국내석사

마이클 브레커의 즉흥연주에 나타난 특징에 관한 연구 : McCoy Tyner Trio의 앨범『Infinity』(1995)의 수록곡 <Impressions>를 중심으로

김수환 동국대학교 2019 국내석사

본 논문은 테너 색소포니스트 마이클 브레커(Michael Brecker)가 1995년 재즈 피아니스트 맥코이 타이너 트리오(McCoy Tyner Trio)의 앨범 『Infinity』에 참여하여 연주한 곡들 중 <Impressions> 에서 보여줬던 그의 즉흥연주기법의 특징에 관한 연구를 목적으로 한다. 재즈 음악의 역사상 현재까지 중대한 영향을 끼친 뮤지션 중 한 명으로 평가받는 테너 색소포니스트 존 콜트레인(John Coltrane), 그의 영향을 받은 마이클 브레커는 존 콜트레인이 사용하였던 목관악기 연주기법 중 하나인 알티시모(Altissimo)와 또 다른 연주기법인 대체운지를 즉흥연주에 이용하였다. 기술적 능력과 관련된 알티시모와 대체운지에 대한 마이클 브레커의 구체적인 사용 기법과 특징을 분석하기 위해 연구자는 존 콜트레인의 사용법을 먼저 서술한 후 마이클 브레커의 기법과 비교 분석하였다. 또한 마이클 브레커의 즉흥연주 속에는 조성에서 벗어나 모달 화성과 선율을 자주 사용한 것으로 볼 수 있는데 그 중 시메트리컬 스케일(Symmetrical Scale)의 일종인 시메트릭 어그먼티드 메이져 스케일(Symmetric Augmented Major Scale)과 홀 톤 스케일(Whole Tone Scale)을 중심으로 한 연주기법을 빈번하게 사용하였다. 이를 구체적으로 분석하기 위하여 시메트리컬 스케일을 이용하여 만들어진 곡들과 재즈 연주자들의 즉흥연주를 예로 설명하였고 이후 <Impressions>에서 마이클 브레커가 사용한 시메트리컬 스케일의 종류와 방법에 대하여 분석하였다. 이러한 연구를 통해 마이클 브레커의 즉흥연주에는 다음과 같은 특징이 있음을 알 수 있었다. 첫 번째, 테너 색소폰의 좁고 낮은 음역을 벗어나 화려하고 폭 넓은 음역의 연주를 위해 알티시모를 사용하였다 볼 수 있으며 알티시모를 사용한 음을 길게 연주하여 즉흥연주의 고조를 유도하고 자 한 것으로 파악된다. 두 번째, 곡의 중반부 이후 텅잉(Tonguing)을 대신하여 대체운지를 사용하였으며 이는 동일한 음을 빠르게 연주할 때 나타나는 텅잉의 난점을 쉽게 극복하여 보다 밀도 높은 연주를 가능하게 하고자 한 의도로 보여진다. 세 번째, 논펑션(Non Function) 스케일로 음정 간격이 규칙적이며 패턴적인 시메트리컬 스케일의 일종인 시메트릭 어그먼티드 메이저 스케일과 홀 톤 스케일을 사용하여 조성과 코드로부터 벗어나 현대적이면서도 보다 자유로운 연주를 꾀하였음을 알 수 있었다. 위의 분석을 통해 마이클 브레커가 수준 높은 연주기법과 체계적이고 논리적인 화성기법을 사용하여 테너 색소폰이 가진 악기적 난점과 국한된 코드 진행의 곡이 가진 화성적 제한을 뛰어넘었다고 볼 수 있다. 기본부터 최고의 난이도까지 철저하게 모두 갖췄던 연주기량과 논리적이면서도 학구적으로 정립된 음악의 독보적인 지식을 바탕으로 한 마이클 브레커의 즉흥연주에 관한 연구자의 논문이 관악기뿐만 아니라 악기의 구별 없이 모든 뮤지션에게 그의 음악 세계 를 조금 더 쉽게 접근하고 구체적으로 이해할 수 있는 방법이 되길 희망해본다. Michael Brecker’s unique style emerges from his use of altissimo and his alternative fingering. Despite his idiosyncrasies, his techniques are clearly informed by one of the greatest jazz musicians - John Coltrane. His work brought altissimo to the forefront, while also revolutionizing alternative fingering for saxophone. He directly influenced future generations, including Michael Brecker. Thus, to understand Brecker, we must first understand Coltrane. From that foundation, a complete analysis and appraisal of Brecker is possible. We will thereafter examine Brecker’s use of non-diatonic phrases and harmonies, with emphasis on his symmetrical scales, such as the symmetrical augmented major scale and the whole-tone scales. By comparing his work to that of other jazz tunes and musicians, the following improvisational techniques will be clarified; First, in order to escape the handicap of a limited range in a tenor saxophone, Brecker plays long tones of altissimo to build excitement during his solos, Second, near the middle of his solos, he uses alternative fingering instead of the tonguing technique, which allows him to continue to play the same note repetitively in a fast tempo, Lastly, Brecker achieves a more modern and expressive solo by using non-functional harmony, such as symmetrical augmented major scale and whole-tone scale. In this study, we demonstrate his logical use of certain harmonic methods on a very limited chord change, thus overcoming the technicalities of a tenor saxophone. Brecker’s improvisational mastery emerges from a solid foundation of technical skill, experience and theoretical knowledge. Thus, we hope this thesis will help all musicians, not just brass players, understand and explore Brecker’s approaches to jazz.

서울시 공공건축 설계발주 및 관리제도 개선방안 연구 : 설계공모 발주제도를 중심으로

김수환 中央大學校 大學院 2017 국내석사

본 연구는 공공건축에 대한 관심이 증가와 함께, 건설산업에서 건축문화로의 패러다임이 변함에 따라 서울시의 공공건축과 관련한 제도의 변화와 업무체계를 살펴보았다. 각각의 업무는 기획, 사전검토, 설계발주, 설계공모, 사후설계관리, 모니터링 및 평가로 구성된다. 이러한 업무의 내용을 이해하고 서울시 업무현황을 살펴본 결과, 현재는 개정된 법규에 대한 업무체계를 조성해나가는 단계이며, 아직은 업무상에 미흡한 점이 많음을 확인하였다. 업무의 개선계획으로는 단기, 중·장기 방안을 마련하였다. 서울시 내에서 기획, 사전검토 업무 등의 문제점을 해결하는 것을 단기 계획으로 구성하고, 중·장기적으로는 공공건축 조성 관련 업무를 지원하는 서울시 공공건축지원센터를 구축·운영 할 방안을 제안한다. 서울시 내부의 문제를 우선 개선하고, 이를 통해 국가공공건축지원센터와 상호 업무 교류할 수 있는 시스템이 구축될 것이다. In this research, as the interest in public architectures has increased, the construction industry has explained the changes in the system related to public architectures in Seoul City and the operation system due to the change in the paradigm for architecture culture. Each system is organized into planning, review in advance, design ordering, design recruitment, post design management, monitoring and evaluation. As a result of examining the system situation of Seoul City by understanding the contents of these systems, it is now the stage of developing the operational system of the revised regulations, and it is still inadequate in terms of system confirmed. Short-term, medium-term and long-term schemes were prepared for system improvement planning. Constructing a short-term plan to solve problems such as planning and review in advance work in Seoul city, construct Seoul Public Architecture Center that supports public architecture related system in the middle and long term Provide a scheme to operate. We will improve the priority of the problems inside Seoul City, which will create a system that can interact with the National Public Building Center.

Characterization of physical, nutritional and sensory properties of Jujube (Zizyphus Jujuba Miller) powder prepared by different drying methods

김수환 서울대학교 대학원 2010 국내석사