실험실 벤처의 현황과 문제점

이준식,Lee Jun-Sik 한국공학기술학회 2000 공학교육과 기술 Vol.7 No.4

경화촉매 분말의 입도조절 및 표면코팅에 의한 에폭시 레진 기반 혼합조성의 상온 보관특성 개선

이준식,현창용,이종현,Lee, Jun-Sik,Hyun, Chang-Yong,Lee, Jong-Hyun 한국분말야금학회 2008 한국분말재료학회지 (KPMI) Vol.15 No.2

To increase pot life in the formulation mixed with bisphenol F epoxy resin, anhydride-based curing agent, and imidazole-based curing accelerator powders as a paste material for high-speed RFID chip bonding, size variation of the imidazole-based powders and a coating method of the powders were adopted in this study. In experiment with regard to the size variation, the pot life was not outstandingly increased. Through the idea using the coating method, however, the pot life was increased up to 4.25 times in comparison with the addition of initial imidazole-based powders. Consequently, successive bonding of RFID chip could be performed with very short time of 5sec using the suggested formulation having improved pot life.

파일원자로에서 치료용 방사성동위원소 생산한다

이준식,Lee, Jun-Sik 한국과학기술단체총연합회 2007 과학과 기술 Vol.40 No.7

적외선 열화상법 및 FE-SEM을 활용한 마그네슘 연소특성에 관한 실험적 연구

이준식,남기훈,Lee, Jun-Sik,Nam, Ki-Hun 한국산업융합학회 2020 한국산업융합학회 논문집 Vol.23 No.6

Magnesium powder has been widely used in various industries because it is light weight and extremely high mechanical strength including aeronautics and chemicals. However, magnesium, as a combustible metal, poses serious safety issues such as fires and explosions if it is not managed properly. Especially, magnesium's max adiabatic flame temperature is 3,340℃ and it is impossible to extinguish it by using water, CO2 and Halonagents. The aim of this study is to identify the combustion characteristics of magnesium powder. We carried out a combustion experiment, using 1 kg of magnesium (purity > 99 %, particle < 150 ㎛). The features of the magnesium burning process were scrutinized using infrared thermal image analysis. Also, a field-emission scanning electron microscope (FE-SEM) were used employed to analyze particulate composites and properties. It concludes the significant tendency of magnesium fire and light, combustion carbide's particle characteristics. This study contributes to make better prevention and response manners to magnesium fires, as well as fire investigation measures.

비정렬 고정격자계를 이용한 쌍롤 박판주조에서의 유동장 및 열전달 해석

이준식,이주명,정재동,Lee, Jun-Sik,Lee, Ju-Myeong,Jeong, Jae-Dong 대한기계학회 2002 大韓機械學會論文集B Vol.26 No.5

This paper presents a numerical analysis on the solidification characteristics in twin-roll strip casting. Unstructured fixed-grid system was employed to deal with phase change. Melting of pure gallium was analyzed to confirm the validity of present program in both structured and unstructured grid systems. An algorithm for simultaneous calculation of the temperature in the roll and the molten metal pool was developed. The flow field in the pool and heat transfer features between pool and roll were shown. The effect of process parameters was also studied. Since the geometry of the molten metal Pool significantly deforms along the casting direction, unstructured grid system is more efficient. The unstructured grid system gives almost the same accuracy, even though the number of grids is only 60% of the structure done.

Enhanced ATSC DTV 수신기의 이중 스트림 기법에 따른 수신 성능 분석

이준식(Jun Sik Lee),김대진(Dae Jin Kim),김성훈(Sung Hoon Kim),지금란(Kum Ran Ji),이재영(Jae Young Lee),김승원(Seung Won Kim) 한국방송·미디어공학회 2003 한국방송공학회 학술발표대회 논문집 Vol.2003 No.-

< 특집 > : 연희 100년 ; 정태진의 한글운동론과 조선어학회 활동: 연희전문학교 학풍과의 관련을 중심으로

이준식 ( Jun Sik Lee ) 연세대학교 국학연구원 2016 동방학지 Vol.173 No.-

학문연구와 실천이 불가분의 관계를 맺어 온것이 한국 근·현대 지성사의 중요한 특징 가운데 하나이다. 나는 이 글에서 실천운동을 포괄하는 방향으로 지성사의 범위를 확대할 필요가 있다는 주장을 하려고 했다. 한글 연구자로서는 크게 주목을 받지 못했지만 한글운동에서는 누구못지않은 활동을 벌이던 정태진에 대해 내가 주목한 이유도 바로 여기에 있다. 정태진은 연희전문학교에서 스승이나 동료학생들과 몇 년 동안 같이 공부하면서 민족의 현실과 미래에 대해 일정한 공감대를 형성할 수있었다. 초창기부터 학문과 실천을 함께 엮어 생각하는 것이 연희전문학교의 고유한 학풍이 되었는데 정태진도 이러한 학풍으로부터 큰 영향을 받아 한글운동가로서의 삶을 살 수 있었다. 정태진은 조선어학회 사건 이후 죽을 때까지 조선어학회 사건의 빌미를 제공했다는 죄의식에서 벗어나기 위해 한글운동에 진력하는 삶을 살았다. 감옥에서 나온 이후 한글운동은 정태진에게 삶의 모든 것이었다. 해방 이후 미군정과대한민국정부, 그리고 모교인 연희대학교 등이 관료나 교수 자리를 제안했지만 정태진은 조선어학회에서 사전을 편찬하는 일에 몰두했다. 그러면서도 한글운동과 관련된 글을 발표했고 필요하다면 대학이나 강습소에서 언어학과 한글을 가르쳤다. 조선어학회의 한글전용론을 체계화한 최초의 단행본을 내고 거기에서 현실적으로 여전히 큰 힘을 발휘하고 있던 한자폐지 반대론을 고려해 점진적 폐지론을 주장한 것은 특기할 만하다. 역사비교언어학의 관점에서 당시로서는 이례적으로 방언 수집과 연구에 주목한것도 높이 평가받아야 할 것이다. One important feature of Korean modern intellectual history are the indispensable connections between academic research and social practice. This paper argues that we should extend the range of intellectual history. To this end, it pays attention to Jeong Taejin, an outstanding activist of the Hangul movement who did not receive special attention as a Hangeul scholar. Jeong Taejin nurtured a national consciousness in his teachers and fellow students at the Yonhee College (Chosen Christian College). The weaving together of study and practice was a unique tradition of the Yonhee College since its early days, and Jeong Taejin could live his life as an activist thanks to this tradition. Due to the liability of the Chosen Language Society case, he dedicated himself to the Hangul movement until his death to stave off feelings of guilt. Although the U.S. Military Government in Korea and the South Korean government offered him a bureaucratic position or professorship after the liberation, he refused all proposals and applied himself to the compilation of a Hangul dictionary for the Chosen Language Society (Korean Language Society). All the while, he published articles about the Hangul movement and taught Hangul and linguistics in educational institutions. In particular, the monograph in which he argued for the exclusive use of Hangul and the gradual abolition of Chinese characters is noteworthy. His attention to the collection of Korean dialects in terms of historical comparative linguistics was also unusual for the time and should be highly evaluated.

<기획> 분단 시대의 앎의 체제, 그 너머 : 지식인의 월북과 남북 국어학계의 재편: 언어정책을 중심으로

이준식 ( Jun Sik Lee ) 연세대학교 국학연구원 2014 동방학지 Vol.168 No.-

이 글의 문제의식은 분단이 지식인의 월북과 그로 인한 남북 학계의 재편에 어떤 영향을 미쳤는가를 밝히려는 데서 출발한다. 논의의 초점은 국어학계의 문제에 맞추어져 있다. 초기 한국 학계의 형성은 일제강점, 해방, 분단 그리고 한국전쟁 등 다양한 근현대사의 사건이 복합적으로 작용하는 가운데 이루어졌다. 특히 국어학자들의 월북은 국어학계는 물론이고 민중의 언어생활에도 큰 영향을 미쳤다.해방정국기에 김두봉, 이극로 등 일제강점기에 한글운동을 주도하던 영향력 있는 국어학자들이 북쪽으로 가는 길을 선택했다. 이미 정치적, 이념적 분단이 가시화되고 있던 상황에서 김두봉 등은 남북의 언어분단을 막는 것이야말로 앞으로 민족통일을 실현하는 데 초석이 될 것이라고 생각했다. 따라서 김두봉 등의 월북 국어학자들은 최현배 등 남쪽의 언어 민족주의자들과 언어문제에 대해 동일한 입장을 취했다. 월북 이후 김두봉과 동료들은 김일성대학 조선어문학부와 조선어문연구회의 창립은 물론이고 궁극적으로는 북한의 언어연구와 언어정책을 주도했다. 이들이 한글의 연구와 발전을 위해 채택한 여러 기준은 남쪽과 비슷한 것이었다. 월북 국어학자들은 북한에서 형태주의 문법, 가로쓰기, 한글 전용의 원칙이 정착되는 데 결정적인 역할을 했다. 이들의 노력에 의해 남쪽에서와 마찬가지로 북쪽에서도 한자의 세계에서 한글의 세계로의 전환이라는, 일종의 언어혁명이 동시에 진행될 수 있었던 것이다. 이 글에서는 분단 70주년을 맞이하는 시점에서 남북 사이에 언어의 이질성보다는 동질성이 더 두드러진다는 점을 강조하려고 했다. 이러한 의미에서 많은 난관에도 불구하고 남북 국어학자들의 공동 노력에 의해 『겨레말 큰사전』 편찬 작업이 계속 진행되고 있는 것은 민족통일을 위해 중요한 시사점을 제공한다. The purpose of this paper is to explain how the division of Korea into North and South affected the crossing over to North Korea by intellectuals and a rearrangement of academia between North and South Korea. This paper especially deals with academics who study Korean linguistics as the focus of the discussion. The formation of early Korean academia was a dynamic process in Korean modern history in which colonialization, liberation, the division of North and South, and the Korean War all played a part. Particularly, the crossing of the border between North and South Korea by Korean linguists had a profound effect on the early stages of academia in Korean linguistics and language. Although many influential Korean linguists, such as Kim Dubong and Lee Geukro, had chosen North Korea during the Liberation Era (1945-1950), they considered that preventing the division of language between North and South Korea would be a shortcut to the unification of the north and the south. Therefore, they shared same stances with regard to language with South Korean language nationalists such as Choi Hyunbae. After crossing over to North Korea, Kim Dubong and his colleagues created the Korean Language and Literature Department at Kim Ilsung University and Chosonomun Yon``guhoe (Association for Korean Language and Writing), subsequently controlling the direction of linguistic research and language policy in North Korea. They studied, promulgated, and developed Hangeul to a standard similar to that in South Korea. They attempted to set the language standard through morphological orthography, horizontal writing, and the exclusive use of Hangeul. They realized a turning point in the linguistic revolution, when the Korean language escaped its antecedent Chinese language era by achieving the exclusive usage of Hangul and the horizontal writing of the language. This study was conducted to consider areas of linguistic homogeneity as opposed to areas of heterogeneity between South and North Korea. In this sense, the project to create a Korean language community through the publication of a Dictionary of the Korean Language (겨레말 큰사전) can serve as a cornerstone for realizing the unification of North and South Korean language.

만보산 사건과 중국인의 조선인식

이준식(Lee Jun-sik) 한국사연구회 2012 한국사연구 Vol.156 No.-

The two differing trends of nationalism and internationalism werenot only harmonized without any major contradictions in East Asia during the early 20<SUP>th</SUP> century, but also conflicted there. This study analyzes the conflicts that emerged between Joseon and Chinese nationals in Manchuria and Joseon in July 1931 as part of what came to be known as the Wanbaoshan Incident. This incident is defined herein as as one of the symptoms that allows us to develop a better understanding of the ideal and reality of the notion of a people’s alliance in East Asia. Despite the common goals of resisting against Japanese imperialism, the two nations (Chinese and Joseon) exhibited clear differences as far as the Chinese Revolution and the national liberation of Joseon was concerned. These differences led to the emergence of cracks in their ideal of forming a national alliance between oppressed nations to resist against imperialism. The Wanbaoshan Incident can be regarded as saliently exhibiting the fissures that emerged between the two nations, and further the conflicts and contradictions that existed in reality. In fact, the history of modern and contemporary Korea-Chinese relations is a complicated one characterized by the concepts of alliance and conflict. This study reviews how the ideal of an alliance between China and Joseon geared towards shared goals, namely anti-Japanese and anti-imperialism. became twisted and distorted. The Wanbaoshan Incident of 1931 exposed the fact that althoughpeople of East Asia sought to forge alliances that went beyond national borders during the early 20<SUP>th</SUP> century. they also engaged in conflicts and clashes with one another. In July 1931, Chinese nationals were killed by Joseon people in Joseon. In Manchuria. many Joseon people were targeted as the subjects of persecution and expulsion. The persecution toward other nations. which emerged in the East Asian region before and after the Wanbaoshan Incident included racialist elements. The expansion of the scope of Japanese imperialism as a result of incidents such as the Manchurian Incident and the establishment of Manchukuo, the Sino-Japanese War. and the Asia-Pacific War Some led some Joseon nationals to fantasize of a world in which Joseon was the main arm of Japanese imperialism. thus exposing an undisguised sense of superiority and exclusiveness toward other nations and races. China also failed to overcome its perception of Joseon as its tributary, a position that was rooted in it traditional Sinocentric awareness. This is clearly evidenced by the Anti Minsaedang Incident (反民生團事件), which saw the Chinese Communist Partysuppress the independence activities of Joseon nationals residing in Manchuriaduring the early 1930s. China’s continued emphasis on thelogic of the single nation, namely that the Zhonghua minzu (Chinese nation) constitutes the only nation in China. some 60 years after the emergence of the Chinese Revolution has important implications with regards to the understanding of modern and contemporary Korea-Chinese relations. including the Chinese people’s perceptions of Joseon.

RFID Inlay 제작용 등방성 도전 접착제의 전기적 특성 평가

이준식 ( Jun Sik Lee ),김준기 ( Jun Ki Kim ),김목순 ( Mok Soon Kim ),이종현 ( Jong Hyun Lee ) 대한금속재료학회 ( 구 대한금속학회 ) 2009 대한금속·재료학회지 Vol.47 No.7

Isotropic conductive adhesives (ICAs) have been used or considered as an interconnect material for radio frequency identification (RFID) inlays or other flip chip assemblies due to the advantages of having a low temperature and high-speed bonding. In this work, the curing properties of commercial ICAs for the RFID tag application and the signal transmission in conductive lines that contained the ICA joints were evaluated as a function of the degree of cure at 900 MHz frequency range. The ICAs showed adequate signal transmission only after the curing process passed over the critical time. It was also found that the insertion loss of signal was more dependent on the contact states of Ag fillers in the bondline in preference to the electrical resistance of the ICA itself.