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오경환 부산대학교 인문학연구소 2006 코기토 Vol.60 No.-
中島敦は漢學的敎養と西洋的知性に基づいて様々な小說の形式を完成させた｡しかし､その技法がいかなる變化を見せようとも､一つの觀念と一つの情緖によって貫かれている｡觀念とは存在と知に対する懷疑精神であり､情緖とは抒情的ペシミズムである｡ところが､この作家は成長期の五年間を朝鮮で､また没する前の数ヶ月間をミクロネシアのパラオで過ごした特異な經歷の持ち主でもあった｡植民地經驗が彼の精神に何をもたらしたか｡自意識と國民意識は､その作品世界の中でいかなる變容を見せ､また､いかに持續したか｡
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오경환 일본어문학회 2011 일본어문학 Vol.55 No.-
小林秀雄は昭和十三年十月に慶州を訪れ、名跡石窟庵を見物したが、そ の時の経験をその翌年に「慶州」という題で発表する。その作品には美との遭逅が作品に対する感覚的享受ではなく、それに対抗する言語の発見によって実現するという批評的な認識が示される。小林秀雄は石窟庵の美に深く感動し、それを謙虚に受け入れるが、その一方自己の精神から言語がなかなか立ち上がらないことに苛立つ。小林秀雄は「沈黙」を強いられ、 「疲れ」を感じ、「不機嫌」を覚えるが、それらはすべて小林秀雄の美に対する批評言語の端緒をなす。それは小林秀雄が出発期以来堅持した唯物的言語観、とりわけフランス象徴主義の詩学を支えた言語思想と照応するものであった。この論文はその端緒の正体を関連作品の分析を通して追跡したものである。
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오경환,박원식,이상인,서동수,Oh, Kyoung-Hwan,Park, Won-Shik,Rhee, Sang-In,Suhr, Dong-Soo 한국재료학회 2012 한국재료학회지 Vol.22 No.11
A general synthetic method to make $Fe_3O_{4-{\delta}}$ (activated magnetite) is the reduction of $Fe_3O_4$ by $H_2$ atmosphere. However, this process has an explosion risk. Therefore, we studied the process of synthesis of $Fe_3O_{4-{\delta}}$ depending on heat-treatment conditions using $FeC_2O_4{\cdot}2H_2O$ in Ar atmosphere. The thermal decomposition characteristics of $FeC_2O_4{\cdot}2H_2O$ and the ${\delta}$-value of $Fe_3O_{4-{\delta}}$ were analyzed with TG/DTA in Ar atmosphere. ${\beta}-FeC_2O_4{\cdot}2H_2O$ was synthesized by precipitation method using $FeSO_4{\cdot}7H_2O$ and $(NH_4)_2C_2O_4{\cdot}H_2O$. The concentration of the solution was 0.1 M and the equivalent ratio was 1.0. ${\beta}-FeC_2O_4{\cdot}2H_2O$ was decomposed to $H_2O$ and $FeC_2O$4 from $150^{\circ}C$ to $200^{\circ}C$. $FeC_2O4$ was decomposed to CO, $CO_2$, and $Fe_3O_4$ from $200^{\circ}C$ to $250^{\circ}C$. Single phase $Fe_3O_4$ was formed by the decomposition of ${\beta}-FeC_2O_4{\cdot}2H_2O$ in Ar atmosphere. However, $Fe_3C$, Fe and $Fe_4N$ were formed as minor phases when ${\beta}-FeC_2O_4{\cdot}2H_2O$ was decomposed in $N_2$ atmosphere. Then, $Fe_3O_4$ was reduced to $Fe_3O_{4-{\delta}}$ by decomposion of CO. The reduction of $Fe_3O_4$ to $Fe_3O_{4-{\delta}}$ progressed from $320^{\circ}C$ to $400^{\circ}C$; the reaction was exothermic. The degree of exothermal reaction was varied with heat treatment temperature, heating rate, Ar flow rate, and holding time. The ${\delta}$-value of $Fe_3O_{4-{\delta}}$ was greatly influenced by the heat treatment temperature and the heating rate. However, Ar flow rate and holding time had a minor effect on ${\delta}$-value.
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오경환,Woosung Ha,정용민,김준기,신우진,손익부,고도경,이종민 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.6
We have fabricated broadband long-period gratings (LPGs) on hollow optical fibers (HOFs) by 15 corrugating slots with various widths by point-by-point exposure of a Ti:sapphire femotosecond laser. The corrugated LPGs showed unique broadband rejection whose FWHM extended to 190 nm with a low insertion loss of less than 1 dB. The maximum coupling strength was 8.5 dB, which is a significant improvement in comparison with previous HOF acousto-optic tunable filters (AOTFs). The center wavelength and coupling strength of the resonant peak could be systematically controlled by modulating the width of the corrugation.
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포토믹서 테라헤르츠 기술 기반의 영상화 시스템을 통한 유리섬유 복합재료 결함의 비파괴검사법
오경환,김덕중,박동운,지영빈,오승재,김학성 한국비파괴검사학회 2018 한국비파괴검사학회지 Vol.38 No.1
In this study, non-destructive evaluation using photo-mixer terahertz technique was studied to visualize the hidden damage in composite structures. A terahertz wave system was developed based on photo-mixer to detect the internal defects of the composite structure, and foreign material was simulated in a glass fiber-reinforced plastic (GFRP) specimen using PET film coated with silver nano-wire. For the visualization, an imaging algorithm for terahertz signal processing and stage control was developed using a GUI based on LABVIEW. The inspection was performed using the developed continuous terahertz inspection system and the terahertz waveform acquired in the single frequency was used to visualize defects. 본 논문에서는 포토믹서 테라헤르츠 기술 기반의 영상화 시스템을 이용하여 유리섬유 복합재료의 결함을 영상화하기 위한 비파괴검사 기술에 대한 연구를 진행하였다. 유리섬유 복합재료 구조물의 내부 결함을 검사하기 위해 photomixer 기반의 테라헤르츠 발생 시스템을 이용하였고, 복합재 제작 공정 중에 시편 내부로 들어갈 수 있는 이물질을 모사하기 위해 유리섬유복합재료(GFRP) 시편 내부에 은 나노와이어가 입혀진 PET 필름을 사용하여 모사하였다. 내부 결함의 영상화를 위해 테라헤르츠 신호의 처리와 stage 제어를 위한 영상화 알고리즘을 Labview 기반의 GUI를 통해 개발하였다. 제작된 포토믹서 테라헤르츠 검사 시스템을 사용하여 결함 검사를 수행하였고, 단일 주파수를 이용해 취득한 테라헤르츠 파형을 영상화 하였다.
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오경환 일본어문학회 2020 일본어문학 Vol.88 No.-
The novel “Kusamakura” which we are going to read has two aspects. One is that of the protagonist, the other is that of the writer. If we think about the protagonist, “Kusamakura” can be said one of the artist‐novel. The protagonist who is a painter tries to theorize of beauty which is based on the spiritual state “The absence of mind” from the Japanese word so called “Hininjyo”. And he also tries to complete his painting. The main story of the novel consists of the artist’s experiences which is concentrated to finish his painting. But the aspect of the writer starts at the point of the completion of the novel. Because in spite of the completion, the question “the novel based on the theory of Hininjyo is possible?” remains. Saying the conclusion, “Kusamakura” should be read as a meta‐novel. The aim of this essay is to clarify the character of the novel as a meta novel through the analysis of the transformation between the protagonist and the writer. 夏目漱石の「草枕」は、二つの位相を有する作品である。一つは主人公の 位相で、もう一つは作家の位相である。主人公の位相からすれば「草枕」は芸術家小説である。主人公の画家は、所謂「非人情」という美の理論を構想して、その理論を実現するような絵を書くことを決意する。作品の内容は、その絵が画家の想像の中で成立するまでの紆余曲折の叙述である。一方、作家の位相は画家の絵が完成し、小説が終結して一つの全体性が獲得されてから想定される。その位相は、絵の完成の上に画家と芸術観を共有する作家はいかなる小説理論に基いて自作を完成するかにかかっている。言わば「草枕」は一種のメタ小説として読まれるべき作品になるのである。それは小説の言語が小説に関する言語と重複したことを意味する。 本論文は、そのような作品の性格を主人公と作家の位相の転位を通じて考えたものである。
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