파일원자로에서 치료용 방사성동위원소 생산한다

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

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.

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.

실험실 벤처의 현황과 문제점

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

일제 강점기의 대학제도와 학문 체계

이준식 ( Jun-sik Lee ) 한국사회사학회 2002 사회와 역사 Vol.0 No.61

null This paper examines how modern learning is appropriated and then reproduced through university which is one of the institutional pillars of knowledge and its influence on society. A specially attention is given to linguistic views and methodology used by Japanese majoring Choson Language and Literature in the Department of Literature at Kyongsong Language and Literature in the Department of Literature at Kyongsong Imperial University, the only university in colonial Choson. With the failure of Korean society to modernize on its own, it was the exterior force that had the greatest impact on the formation of modern learning system. As many departments and the academic system in Kyongsong Imperial University were transplanted from and continuous progress from traditional learning to modern learning, the university was indeed a deviation. The researches carried out by Japanese professors at Kyongsong Imperial University in the name of modern learning were basically kwanbak ak`abmicbum(pro-state academism) with characteristics of rationalizing and legitimatizing the colonial rule of imperial Japan. In this sense, Kyongsong Imperial University was an ideological apparatus reproducing colonial ruling ideology in colonized Chosn. A similar analysis can be applied to a major of Chosn Language and Literature in the Literature Department. Linguistics taught by Japanese professors to Chosn students in the department did not go beyond a negative view against conscious interventions to deform the reality of an oppressed nation`s language. The university institution and academic system constructed around Kuongsong Imperial University during this period were fundamentally colonial in character and the academic discipline of linguistics was no exception. Nevertheless, Korean students majoring Choson Language and Literature in the Department of Literature believed that the ‘scientific’ linguistics introduced by the Japanese professors who were educated in imperialist linguistics at Tokyo Imperial University and, based on such a belief, they preoccupied themselves with researches on Chosn language as research for a sake of research.

불규칙적인 격자망을 이용한 생체 연조직의 곡면변형률 측정

이준식(Jun Sik Lee),김기홍(Ki Hong Kim),김형종(Hyung Jong Kim) 대한기계학회 2013 大韓機械學會論文集A Vol.37 No.8

본 연구에서는 광학적 방법으로 곡면변형률을 측정하고자 할 때, 소재 표면이 임의의 곡면이거나 요철이 많은 경우, 부식이나 오염으로 표면이 불량한 경우, 그리고 고무나 폼, 생체 조직 등과 같이 규칙적인 격자망을 인쇄하기 어려운 경우에도 적용할 수 있는 자동 곡면변형률 측정시스템 ‘ASIAS-bio’를 개발하였다. 이 시스템은 시편의 재질과 표면상태, 격자 패턴과 크기, 격자 마킹 방법, 변형 정도 등 측정 조건에 관계없이 사용이 가능한 것이 특징이다. 우선 그 신뢰성을 평가하기 위하여 금속판재 성형제품의 변형률 분포를 상용 장비로 측정한 결과와 비교하였다. 또한, 돼지 어깨 관절막, 인체 무릎 피부 등 연질 생체 조직의 변형 측정에 적용함으로써 본 시스템의 유용성을 확인하였다. In this study, an automatic surface-strain measurement system called “ASIAS-bio” has been developed. This system can be used even in cases in which it is very difficult to apply a regular grid pattern necessary for measuring surface-strain, such as curved or uneven surfaces; surfaces damaged by corrosion or contamination; or soft materials such as rubber, foam, and biological tissues. This system works independently of the measurement conditions including the material and its surface condition, grid pattern and size, grid marking method, and degree of deformation. A comparison between the strain distributions of the sheet metal parts measured by using this system and those obtained by a commercial system showed that this system was sufficiently reliable. In addition, the deformation of the swine joint capsule and human knee skin was measured by using this system to demonstrate its usefulness.

VANET을 위한 Stable-Metric 기반 클러스터링

이준식(Jun-Sik Lee),박수호(Soo-Ho Park),정재일(Jae-Il Jeong) 한국정보기술학회 2015 Proceedings of KIIT Conference Vol.2015 No.6

민족해방운동의 유산과 민주화운동

이준식(Lee Jun-sik) 한국역사연구회 2010 역사와 현실 Vol.- No.77

Today, the Korean society is experiencing serious threats to democracy. In this article, in order to gain a new understanding of the Koreans' efforts that began in the past and is still going on today toward democratization, the legacy of the National Liberation movements that continued during the Japanese occupation period will be examined. The National Liberation movement during the Japanese occupation period had a plan and prospect for the government that would be built after the liberation. In terms of creating a political format, both the Socialists and the Nationalists were aiming for a democratic republic, where all the citizens'(or the people's) freedom and rights would be protected and secured. And in terms of establishing an economy, they pursued neither a totally Communist system nor a Capitalist system, but a system which could ensure the least amount of equality, by the government's nationalizing lands and major corporations. Such legacy of the National Liberation movement transformed into several ideas regarding the new nation's Constitution right after the liberation, and finally led to the 'First Constitution.' The First Constitution was a concise, albeit imperfect, plan for democracy that should be established in the area of politics, society and economy, and that was generally agreed upon by factions involved in the National Liberation efforts, including the Korean Provisional government. That was why 'equality' was presented as the primary value to be pursued by the new nation in both the foreword and main section of the first Constitution. Yet with the unfolding of the Korean war, anti-Communist sentiment got stronger than ever, and the progressive nature of the First Constitution was severely weakened, while the format itself still remained an impressive one. The problem today is that such spirit of the Constitution is not being fully abided by in the lives of the ordinary people. The objective of the Democratization efforts has been to revive the ideas and ideals of the First Constitution. As long as the people engaged in such efforts try to invite a society where the people's freedom, rights and equality would be ensured, which was also the aim of the National Liberation front in the past, then democratization efforts could be labelled as the 'successor' to the National Liberation movement of the Japanese occupation period.

박정희의 식민지 체험과 박정희시대의 기원

이준식(Lee Jun Sik) 역사비평사 2009 역사비평 Vol.- No.89

This paper shall explore the origin of Prak Chung Hee’s era which started with 5·16 coup, prospered in October Dictatorial Constitutional Revitalizing Reform(YuShin) and finished at 10ㆍ26. This paper shall focus on the his experience of colonialism which is a main momentum of the his era. The purpose of this paper is to show the relationship between Park's inter outlook of the world which was formed through Japanese colonialism in Korea and the permanent dictatorship that he persue by pressure of the demand of democracy. Although Park was a former president of Republic of Korea and an iron dictator, he had experienced as a student of the public common school of Japanese colonialism, a student of a teacher’s school, and a teacher of the public common school of Japanese colonialism, a student of Manchuria’s Army School, a student of Japanese Army School and an officer of Japanese Emperor’s Army. These experience had affected him to form his outlook of the world. He had already strongly anticipated Japan and Japanese Army and accepted with internalization the ideology of the militarism. Based on these personal experience and acknowledgement, he started the 5ㆍ16 coup with the idea that the coup of Japanese in 1930s by young officers was the model of his 5ㆍ6 coup. He also made the Meiji Yushin be the model of the national reconstruction of Korea that he wanted to make after success of his coup. He regards the Meiji Yushin system under which all power was concentrated to the Emperor of Japan as the ideological political system. This made him an iron dictator of Korea with rejecting the western advanced democratic political system. As the Meiji Yushin was terminated with the vanished dream of the Japanese military authority in August 15. 1945., the Park’s Yushin system was terminated by just one ballot which targeted at the “heart of Yushin” that did not permit any of difference with the iron dictator.