Highly Durable Cross-Linked Polymer Electrolyte Membranes at Elevated Temperature

김기현,허필원,박정옥,최성우,박찬호,김성곤,김기현,고태윤,이종찬 한국고분자학회 2012 한국고분자학회 학술대회 연구논문 초록집 Vol.2012 No.10

Development of Novel Polybezoxazine-Polybenzimidazole Electrolyte membrane for Fuel Cell at Elavated Temperature

김기현,김성곤,최성우,김기현,박정옥,박찬호,고태윤,장혁,이종찬 한국고분자학회 2012 한국고분자학회 학술대회 연구논문 초록집 Vol.2012 No.4

특별게재-눈앞의 이익보다 먼 장래투자를

김기현,Kim, Gi-Hyeon 한국과학기술단체총연합회 1986 과학과 기술 Vol.19 No.8

◇이 글은 지난 7월 8일부터 10일까지 건국대에서 개최된 "'86국내외한국과학기술자학술회의 하계심포지움"의 개회식에서 행한 재미과협 김기현회장(미노드캐로라이나 센추럴대교수ㆍ물리학)의 특별강연 내용을 정리한 것이다. <편집자 주>

2P-302 : Synthesis of cross-linked membranes for high temperature polymer electrolyte membrane fuel cells (PEMFC)

김기현,허필원,최성우,박찬호,장혁,김성곤,김기현,고태윤,이종찬 한국공업화학회 2011 한국공업화학회 연구논문 초록집 Vol.2011 No.1

90년대 반복되는 라틴아메리카 외환위기의 根源

김기현 한국라틴아메리카학회 2001 라틴아메리카연구 Vol.14 No.1

Changes in Atmospheric Mercury Concentrations in Seoul, Korea and its Significance: A Case Study Between 1997 and 2002

김기현,김민영,홍성민 한국대기환경학회 2005 한국대기환경학회지 Vol.21 No.E1

The concentration levels of gaseous elemental mercury (GEM) in ambient air have been investigatedfrom a monitoring station located in Yang Jae district of Seoul, Korea for a long-term period covering1997 through 2002. The mean concentration of Hg, if computed based on its hourly measurement data forthis six-year period, was 5.32± 3.53 ng m-3 (N = 27,170). The inspection of the diurnal distributionpatterns indicated the presence of notably high concentration levels during nighttime relative to daytime(e.g., the mean hourly value as high as 9ng m-3 in winter nighttime). When divided seasonally, the high-est mean of 6.12ng m-3 was also observed during winter followed by spring, fall, and summer. The resultsexhibiting a complicated trend on a long-term basis. Examination of our data over a different temporalscale consistently indicated that dynamic changes in Hg concentrations occurred through time in line withchanges in the strength and diversity of the source processes. It is thus acknowledged that the presence ofunusually high Hg levels is the consequence of intense man-made activities, while such signatures canvary in a competitive manner.

순수 도덕주의 관점에서 본 南塘韓元震의 人物性異論

김기현 한국유교학회 2003 유교사상문화연구 Vol.19 No.-

포항지역 오존의 수직분포 특성

김기현,김지영,송기범,윤용훈 한국지구과학회 2000 韓國地球科學會誌 Vol.21 No.3

In order to investigate the factors and processes affecting the vertical distributions of ozone, we analyzed the ozone profile data measured using ozonesonde from 1995 to 1997 at Pohang city, Korea. In the course of our study, we analyzed temporal and spatial distribution characteristics of ozone at four different heights: surface (100m), troposphere (10㎞), lower stratosphere (20㎞), and middle stratosphere (30㎞). Despite its proximity to a local, but major, industrial complex known as Pohang Iron and Steel Co. (POSCO), the concentrations of surface ozone in the study area were comparable to those typically observed from rural and/or unpolluted area. In addition, the findings of relative enhancement of ozone at this height, especially between spring and summer may be accounted for by the prevalence of photochemical reactions doting that period of year. The temporal distribution patterns for both 10 and 20㎞ heights were quite compatible despite large differences in their altitudes with such consistency as spring maxima and summer minima. Explanations for these phenomena may be sought by the mixed effects of various processes including: ozone transport across two heights, photochemical reaction, the formation of inversion layer, and so on. However, the temporal distribution pattern for the middle stratosphere (30㎞) was rather comparable to that of the surface. We also evaluated total ozone concentration of the study area using Brewer spectrophotometer. The total ozone concentration data were compared with those derived by combining the data representing stratospheric layers via Umkehr method. The results of correlation analysis showed that total ozone is negatively correlated with cloud cover but not with such parameter as W-B. Based on our study, we conclude that areal characteristics of Pohang which represents a typical coastal area may be quite important in explaining the distribution patterns of ozone not only from surface but also from upper atmosphere.

제주 오라관광단지 조성사업의 발전방안

김기현,이진희 제주관광학회 2019 濟州觀光學硏究 Vol.22 No.-

退溪의 自己省察 精神

김기현 한국유교학회 2009 유교사상문화연구 Vol.37 No.-

It may be quite unfamiliar with the word 'introspection' when we think of Confucianism because it is generally linked with 理氣心性論. However, as self-cultivation was the first step of Confucianism, the spirit of introspection was the most important part to Confucians. They could not imagine self-improvement without introspection. For this idea, I would like to describe Toegye's studies and his life. Toegye started introspection from his heart. He tried to make his heart straight, because he knew that heart is the starting point of universal understanding and participation. It was not meant to be only for a sense of morality. From his clear mind, he aimed the ideal of 天人合一 that embraces all things. On the other hand, it helped him to cultivate the idea of aesthetic. We could see it from his poems more than 2,000 pieces. Toegye's spirit of introspection can be seen from his daily life also. He tried to improve his self from all the things he met in daily life. Here there always has been his humbleness of intelligence and morality. In fact there will be no introspection when conceit oneself. Toegye thought all the natural phenomenon could serve as a momentum for his self-improvement. His sense of introspection was accompanied with the sense of shame. It is because the modesty awakens his ignorance and incompetency. As Toegye had higher criteria for ideal self, he showed shame more than others. There was his sense of Heaven on the background. He would realize the meaning of human being without shame before Heaven. Here we can see his religional faith. 유교 하면 이기심성론을 떠올리는 우리들에게 자기성찰이라는 주제는 다소 생소하게 들릴 수 있다. 하지만 수신을 학문의 출발점으로 여겼던 유가에게 자기성찰의 정신은 더없이 중요한 것이었다. 자기성찰이 없는 수신은 상상할 수 없는 일이기 때문이다. 필자는 그것을 조선의 최고성리학자인 퇴계의 학문과 삶을 통해 조명하였다. 퇴계는 마음에서부터 자기성찰을 시작하였다. 그는 마음이야말로 세계 인식과 참여의 출발점임을 알아 마음을 올바르게 가지려 하였다. 그것은 단지 도덕심의 계발을 위한 것만은 아니었다. 그는 명징한 마음으로 만물을 아우르는 천인합일의 이상을 지향하였다. 한편으로 그러한 마음은 심미의식을 제고시켜주었을 것으로 보인다. 우리는 그것을 2천편 이상의 그의 시들에서 확인한다. 퇴계의 자기성찰 정신은 일상생활 속에서도 전반적으로 드러난다. 그는 일상에서 만나는 모든 일들을 자성하면서 자아향상의 계기로 받아들였다. 거기에는 그의 지적, 도덕적인 겸손이 작용하였다. 사실 자신의 지식과 행동을 자부하고 자만하는 마음속에서는 자기반성과 자아향상의 정신이 깃들 여지가 없을 것이다. 이러한 자기성찰의 정신은 특히 일이 뜻대로 풀리지 않을 때 더욱 현저하게 드러난다. 더 나아가 그에게는 자연의 모든 현상까지 자기성찰과 자아향상의 계기로 작용하였다. 퇴계의 자기성찰 정신은 부끄러움 의식을 수반하였다. 그의 겸손은 자신의 무지와 무능을 수시로 자각하였기 때문이다. 게다가 그는 자아의 이상을 높게 가졌던 만큼 부끄러움 의식을 남달리 많이 드러내었다. 그 배경에는 ‘하늘’ 관념이 놓여 있다. ‘하늘’이 인간에게 부여한 존재의미를 “하늘에 부끄럽지 않게” 실현하겠다는 것이었다. 그의 종교적인 심리가 여기에서 드러난다.