Nanogenerators: Fully Rollable Transparent Nanogenerators Based on Graphene Electrodes (Adv. Mater. 19/2010)

Choi, Dukhyun,Choi, Min-Yeol,Choi, Won Mook,Shin, Hyeon-Jin,Park, Hyun-Kyu,Seo, Ju-Seok,Park, Jongbong,Yoon, Seon-Mi,Chae, Seung Jin,Lee, Young Hee,Kim, Sang-Woo,Choi, Jae-Young,Lee, Sang Yoon,Kim, Jo WILEY-VCH Verlag 2010 ADVANCED MATERIALS Vol.22 No.19

<B>Graphic Abstract</B> <P>The cover shows an image of fully rollable transparent nanogenerators synthesized using chemical vapor deposition grown large-scale graphene sheets as transparent electrodes and piezoelectric ZnO nanorod arrays. Sang-Woo Kim, Jae-Young Choi, and co-workers report on p. 2187 the electrical and structural stability of the nanogenerators, with excellent charge scavenging performance under external mechanical loads such as bending and rolling. This study shows that graphene-based nanogenerators are very promising for self-powered rollable transparent device applications. <img src='wiley_img_2010/09359648-2010-22-19-ADMA201090066-content.gif' alt='wiley_img_2010/09359648-2010-22-19-ADMA201090066-content'> </P>

최형섭과 ‘한국형 발전 모델’의 기원

임재윤(Jae Yoon Im),최형섭(Hyungsub Choi) 역사비평사 2017 역사비평 Vol.- No.118

This article critically reviews the “model” of Korean development designed by Choi Hyung Sup, Minister of Science and Technology of the Park Chung Hee government. The model has been an active template in Korea’s official development assistance (ODA) of science and technology. This acknowledgement comes from the belief that the model was effective in the development of Korea, and it attained widespread support from senior scientists and administrators of science in Korea. In this paper the authors highlight the fact that the model was from the beginning designed to be applicable in other countries. The argument is that the model was formulated within the context of Cold War development studies supported by international organizations. Through the process, Choi’s model acquired its characteristics of emphasizing legal and institutional set-ups, the role of national leaders and the national laboratories in introducing, digesting, and improving high technology.

貴金屬·寶石加工産業의 經營實態와 國際競爭力 分析 : 裡里 貴金屬·寶石加工團地를 中心으로 Focusing on Iri Jewellery & Gems Export Industry Park

尹忠沅,崔宇琮,尹錫玩,卞在權 全北大學校 1988 論文集 Vol.30 No.-

Jewellery & gems industry has been developed with the beginning of ancient human history as all the mankind have a fancy for precious metals and stones regardless of the times and nationality. Historically, Korean also had an excellent workmanship from the ancient era and shipped it, as a tribute, to the neighboring countries. However, our deposits of gold and silver had been almost dried up, especially owing to a lot of excavation during Japanese imperialist rule, And precious stones have not been discovered in Korea except a small quantity of crystal. Therefore, Korea cannot but depend on the processing industry of jewellery and germs by importing the unworked gold, diamond and other precious stones from overseas countries. By the way, recent overseas market of jewellery & germs is very extensive and the value added of the industry is much larger than other industries. So jewellery & gems processing industry is regarded as the most important field in the advanced countries. All the more, the industry is typical of labor-intensive one and is more suitable to the nations whose people are deft-handed. From those points, it is quite appropriate to Korea. Recognizing this facts, Korean government had set up a Jewellery & Gems Export Industry Park in Iri city ten years ago. The bonded industry park has much contributed to export promotion and regional economic development. But there are a lot of room for improvement if we would obtain the anticipated results. So we researchers have studied and analyzed the following points to find some ways for improving the Iri Jewellery & Gems Export Industry Park. ① the history of precious metals & gems industry in both overseas countries and Korea. ② international production status of unworked precious metals & stones, and structure of international trade. ③ business status of exporting companies in Iri Jewellery & Gems Export Industry park; general circumstances, exprot & import structure, employment policy, production & skill, purchasing materials (the unworked stones ) and marketing etc.

美術敎授行爲에 있어서 視知覺 理論의 意義

최윤재 韓國美術敎科敎育學會 2001 師鄕美術敎育論叢 Vol.8 No.-

The purpose of this study is to review Implication of Theory of Visual Thinking in Art Education If visual perception as cognition is involved in the arts, art education will give students cognitive works as well as emotional and creative experiences. This study not only have to do with senses, perception and thinking, but their relationships. Vision is the teaching of aesthetic perception. It is involved in aesthetic thought. It is necessary to make students observe aesthetics object, in particular, the work of art. arts are the resource of visual thinking. Arts have cognitive one as well as emotional creative ingredient. In these respects, it is imperative that this study investigates visual perceptual thinking-based on art education. Therefore it is of importance to note that since visual-perception works form the world to human thinking, visual thinking through arts is on the basis of artistic experience. Accordingly the formation of the conception based on simple knowledge and indication cannot achieve perceiving through the experience. It is not a visual perception. Artistic perception is required to experience the qualities of the artistic objects. It is concluded that visual perception with the extension of thinking should be an essential element of the development of art education.

경사각에 따른 자리 진동 히트파이프의 열전달특성에 관한 연구

최재혁,윤두호,윤석훈 한국해양대학교 산업기술연구소 2002 연구논문집 Vol.19 No.-

In this paper, heat transfer characteristics of a self-oscillating heat pipe were experimentally investigated for the effect of inclination angle and heat loads. This type of heat pipe consists of a heating section, a cooling section and an adiabatic section. The heat pipe used has a 0.002m internal diameter, a 0.34m length in one turn and consists of 19 turns. Each of the heating and cooling section has a length of 70mm. Experiments were performed to measure the temperature distributions and the pressure variation of the heat pipe according to inclination angle. Based on the experimental results, the heat transfer ability of the self-oscillating heat pipe seems to improved with the increase of the inclination angle.

급박 하지 허혈증에 대한 비수술적 치료의 장기 추적 결과

최재영,손민수,이길연,이상목,고석환,홍성화,윤층,오수명,박호철 대한혈관외과학회 2003 Vascular Specialist International Vol.19 No.1

내열 복합재료용 모재 수지의 개질 연구

최원종,이재락,윤상근 한국항공대학교 1995 論文集 Vol.33 No.-

내열 복합재료용 모재 수지의 개질 특성과 공정 변수에 대한 연구를 위하여, N.BMI를 첨가한 에폭시 수지를 모재로 하는 적층판의 물성이 N.BMI의 첨가량에 따라 변화하는 것을 알아보기 위하여 기계적 물성 실험을 실시하였으며, 또한 승온속도의 영향을 알아보기 위하여 DSC와 TGA를 이용한 열분석을 수행하였다. 실험 결과, 승온속도가 빠른 경우 peak 온도가 지정 경화온도보다 높게 나타나므로 모재 수지의 불균일 경화반응이 일어날 수있음을 알수 있었다. 내열성 향상을 위해 N.BMI를 첨가하는 경우 10% 함유량에서 가장 우수한 특성을 나타내었다. The purpose of this project is to study the influence of heat-up rateduring cure cycle on the homogeneity of cured matrix resin and the effects of resin formulation on the thermal properties of fiber reinforced composite materials. The results of DSC analysis show that with the rapid heat-up rate, the homogeneity of matrix resin can not be achieved during normal cure cycle. The TG analyses have been performed on the various types of epoxy matrix resins. The results show that the formulation with BMI is stable to the temperature of 348℃ which is comparable to that of 350°F type prepreg.

효율적 응급의료시스템의 핵심지표 개발 연구

최윤정,김창수,이재호 건강보험심사평가원 2021 HIRA RESEARCH Vol.1 No.2

쥐의 성주기에 따른 자궁 비만세포와 성호르몬의 변화

최영자,제갈승주,윤영승,김재만 木浦大學校 基礎科學硏究所 2001 基礎科學硏究誌 Vol.19 No.-

Mast cells reside in connective tissue and mucous tissue that encircle the internal environment of the body, where they mediate inflammatory response encountering foreign materials. Mast cells are also found in uterus tissue which is, in fact, exposed to external world. Because the cells are provoked by invading foreign cells to cause inflammatory response, their response in the uterus should be controled for success in fertilization and implantation, in that the foreign sperms and fertilized egg are willing to invade into the body. In order to confirm such assumption, we investigated the changes in mast cell numbers and their contents in the rat uterus during the estrus cycle and related these to the changes in sex-hormone concentration. The mean number of mast cell at the proestrus and estrus phase was 4.8±2.72 and 5.98±1.55. respectively. The number increased as much as 3 times more then previous phase at the metestrus phase and subsided to half at following the diestrus phase. Those mast cells were subdivided type. Connective tissue type was major at metestrus and diestrus phase. At the following proestrus, however, the muscous type was largely increased and major population was changed to muscous and intermediate type at estrus phase. In the immature uterus of young female, as few as 1.67±0.23 cells were detected and most of them were mucous and intermediate type. The concentration of circulating estradiol-17 β was lowest at the metestrus phase both in free and bound form. The results suggest that estrogen may be involved in inhibiting swarming of mast cells in the uterus and accumulating the contents of secretory vesicles.

기혼여성의 노동공급 결정요인 : 準母數的 접근 A Semiparametric Approach

최강식,황윤재 韓國計量經濟學會 1999 계량경제학보 Vol.10 No.1

본 논문은 한국에서 기혼여성의 노동공급 결정요인에 관한 실증적 연구결과를 제시한다. 여성의 경제활동에 영향을 미치는 진정한 요인이 무엇이며, 또한 여성이 경제활동에 일단 참가한 이후 노동공급시간에 영향을 주는 요인이 무엇인가를 정확히 파악한다는 것은 여성인력정책 수립에 있어 필수불가결한 것이다. 본 연구방법의 특징으로서는 준모수추정법을 사용하였다는 점으로서, 표본의 선택성 및 설명변수의 내생성을 명시적으로 고려할 뿐 아니라, 교란항의 분포에 관한 자의적인 가정에 의존하지 않는다는 장점을 가진다. 본 실증연구에서 기혼여성의 노동시장 참여와 노동시장의 근로시간에 영향을 미치는 가장 중요한 요인은 8세 미만의 자녀수로 나타났으며, 지역간 실업률의 격차도 여성의 경제활동 참가에 영향을 주는 것으로 나타났다. 그리고 노동시장에 진출한 기혼여성의 근로시간에는 자녀수 외에도 타가구원의 소득이 중요한 결정요인으로 나타났다. 이러한 결과는 보육시설의 양적 및 질적 확충이 여성인력 활용정책의 주요 방향이 되어야 한다는 사실을 다시 확인시켜 준다.