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유기 / 무기 나노 템플레이트를 이용한 나노 정보소재 합성 연구
이전국(Jeon-Kook Lee),정원용(Won Young Jeung) 한국자기학회 2004 한국자기학회지 Vol.14 No.4
The fusion of nano technology and information technology is essential to sustain the present growth rate and to induce new industry in this ever-growing information age. Considering Korean industry whose competitiveness lies heavily on information related technologies, this field will be inevitable for future. Nano materials can be described as novel materials whose size of elemental structure has been engineered at the nanometer scale. Materials in the nanometer size range exhibit fundamentally new behavior, as their size falls below the critical length scale associated with any given property. Bottom-up techniques involve manipulating individual atoms and molecules. Bottom-up process usually implies controlled or directed self assembly of atoms and molecules into nano structures. It resembles more closely the processes of biology and chemistry, where atoms and molecules come together to create structures such as crystals or living cells. Nano scale sensors are included in the electronics area since the diverse sensing mechanisms are often housed on a semiconductor substrate and usually give rise to an electronic signal. The application of nano technology to the chemical sensors should allow improvements in functionality such as gas sensing. In this presentation, we will discuss about the nano scale information materials and devices fabricated by using the organic/inorganic nano templates.
이전경 ( Jeon Kyung Lee ) 한말연구학회 2015 한말연구 Vol.- No.37
When it comes to the invention of Hunminjeongeum, it has been overlooked that the new letter system was purposely made to establish the throne of Joseon Dynasty. Here this untreated issues are dealt by reviewing several articles in the Annals of the Joseon Dynasty. In Section 2, the reasons why the Hunminjeongeum was invented are studied with the article of Feb 20 of 26 Annals. This article contains significant information about the process of inventing Hunminjeongeum and literary policies in the era of King Sejong as well. Thus reviewing the article led to revealing the dynamics between the king and his officials in the Royal Court which had neglected in previous studies. For example, appeals submitted by Choei Manri turned out to be the attempt to control the throne with the Sadae diplomatic policy and Confucianism. King Sejong however beat off the challenge by laying out logical bases, and it affected other counter arguments against the letter invention. Ever since these appeals had been dealt with, the literary policy went well. In Section 3, the historical background that needed new character system, Hunminjeongeum is mainly reviewed. In the early years of the Joseon Dynasty, the literary policy was established in relation to organizing national administrative systems domestically. It was also related with making its place in the East Asia internationally. The throne needed its authority recognized both internally and externally, so made its own character system and new Unseo(Dictionary of Proper Pronunciations) to achieve the goal effectively.
탄소섬유 강화플라스틱 박판과 콘크리트 사이의 계면 부착응력에 대한 유한요소해석
이전호(Lee Jeon-Ho),전철배(Jeon Cheol-Bae),반병열(Bahn Byong-Youl) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(구조계)
This study investigates the interfacial failure mechanism between CFRP laminate and concrete through the finite element analysis. Based on both the previous experimental studies and the predicting model, finite element analysis was performed to evaluate interfacial behavior between CFRP laminate and concrete. Various interfacial bond stress-slip models and shear modulus of adhesive layer were considered in the present finite element analysis model. The CFRP strain distribution along the bond length and the distribution of interfacial shear bond stress as increasing the load were analyzed. The comparison between the results of finite element analysis and the experiment show good agreement.
교장의 수업지도성에 대한 자기-타인평가일치가 학교 내 교사협력에 미치는 영향
이전이(Lee, Jeon-Yi),구하라(Ku, Hara),박주호(Park, Joo-Ho),주미경(Ju, Mi-Kyung),차윤경(Cha, Yun-Kyung),최경준(Choi, Kyoung-Jun),함승환(Ham, Seung-Hwan) 학습자중심교과교육학회 2014 학습자중심교과교육연구 Vol.14 No.4
본 연구는 융복합교육을 위한 핵심요소 가운데 하나인 교사협력을 효과적으로 지원할 수 있는 교장의 수업지도성 요건에 대한 탐색적 연구로 수행되었다. 이러한 관점에서 본 연구는 학교장의 수업지도성에 대한 교장/자기 평가와 교사/타인 평가 간 의 (불)일치 유형에 따라 학교 내 교사 간 협력 정도가 어떻게 다른지 분석하였다. 이를 위해 OECD의 TALIS 2008 데이터 가운데 우리나라 전국 48개 중학교에 근무하는 교장 48명과 교사 819명의 응답을 활용하였다. 분석 결과, 학교장의 수업지도성에 대한 교장과 교사 간의 평가 (불)일치 유형에 따라 교사 간 협력 정도가 유의미한 차이를 보이는 것을 확인하였다. 교장의 수업지도성에 대한 교장과 교사 간의 평가 (불)일치 유형을 ‘고평가 일치’ 유형(준거 집단), ‘저평가 일치’ 유형, ‘과대평가자 교장’ 유형, ‘과소평가자 교장’ 유형으로 분류할 때, 과소평가자 교장 유형의 학교 교사들은 고평가 일치 유형 학교의 교사들에 비해 교사 간 협력 측면에서 유의미한 차이를 보이지 않았지만, 과대평가자 교장 유형이나 저평가 일치 유형의 학교 교사들은 고평가 일치 유형 학교 교사들에 비해 협력 활동에 참여하는 정도가 유의미하 게 낮은 것으로 나타났다. 이러한 분석 결과는 교사 간 협력 활동을 촉진하는 기제로서 학교장의 수업지도성에 대한 평가가 다면적으로 이루어질 필요가 있음을 시사한다. This study examines how the degree of teacher collaboration varies depending on the principal-teacher rating (dis)agreement regarding principal instructional leadership. Analyzing data from 48 middle schools in South Korea, originally gathered by the OECD’s TALIS 2008 survey, the study shows the possibility that the degree to which teacher collaboration is fostered in schools may systematically differ depending on four (dis)agreement types, i.e., in-agreement/good, in-agreement/poor, over-estimator principal, and under-estimator principal. The main findings suggest that teachers working in ‘in-agreement/good’ type schools (i.e., schools where both the principal and the teachers agree that the principal exhibits effective instructional leadership) are most likely to engage in intra-school collaboration with other colleague teachers. In addition, ‘under-estimator principal’ type schools (i.e., schools where the principal under-estimates his/her instructional leadership performance while the teachers evaluate him/her highly) also appear fairly effective in fostering teacher collaboration. Conceptual and practical implications are discussed in light of the importance of evaluating instructional leadership in multifaceted ways.
이전경(Lee, Jeon Kyung) 고려대학교 한국학연구소 2013 한국학연구 Vol.44 No.-
이 글은 연세대 중앙도서관 소장 각필구결본 『묘법연화경』의 점토표기법을 밝히기 위한 연구의 일환으로 이 자료에 나타난 처격의 표기 양상을 살핀 것이다. 이 자료에는 처격조사로서 대체로 ‘?’와 ‘?’, ‘??’, ‘??’가 사용된다. 빈도로 보아 대표적인 처격은 ‘?’이며 나머지 표기들은 용법이 제한적이다. ‘??’의 용법은 유가사지론 계통과 동일하나 ‘??’의 분포가 제한적인 점, ‘??’를 시간 표기에 사용하는 점이 이 자료의 특징이 다. 처격의 ‘?’가 단독으로 사용된 용례나 존대 ‘??/??’는 확인되지 않는다. 다른 석독구결자료에서 나타나는 ‘??’의 예 또한 나타나지 않는다. 이 자료의 처격출현 양상에 한정하여 본다면 이 자료가 석독구결의 시대인 12~13세기 이후의 자료임을 추정해 볼 수 있다. 대체로 석독구결자료 중 오래된 것으로 보이는 화엄경에서만 특이 처격인 ‘??’가 나타나기 때문이다. ‘??’가 다수 현토된 ‘?時’의 예를 통해 시간명사 ‘끠?’표기 가능성을 제시하였다. 15세기의 언해본과 일치할 가능성이 있는 이 표기는 이 자료의 시기가 후대일 가능성을 높인다. Seokdok Kugyol is classified by Huayanjing (華嚴經) Type and Yuqieshidilun(瑜伽師地論) Type. The Code Kukyol, YonseiUniv. collecton, is in accordance with Code Kukyol system of Yuqieshidilun Type. Generally, ‘?’, ‘??’, ‘??’, ‘??’ are used as Locative Case. In terms of frequency, typical Locative Case is ‘?’, but the other cases are limitedly used. The usage of ‘??’ is similar to Yuqieshidilun Type, however, distribution of ‘??’ is limited, and use of ‘??’ as a time mark are the distinct features of this document. There are no examples that show exclusive use of locative case of ‘?’ and use of ‘??/??’ as an honorific word. Also, ‘??’, shown at the Seokdok Kugyol, is not appeared. In terms of Locative case apperance, the document is estimated to be made after 12~13 century, which is the Seokdok Kugyol age because ‘? ?’ is appeared only at Huayanjing which seemed to be the oldest Seokdok Kugyol. It suggests the possibility of the notation ‘?’ which is a timesnoun in 15 century, by example of ‘?時’ where lots of ‘??’ is attatched. Also, it shows that the material is made at the late period.