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인공고관절 전치환술에서 세라믹 볼 헤드의 기계적 안정성 평가를 위한 유한요소 해석
한성민,추준욱,전흥재,김정성,최귀원,윤인찬,Han, Sung-Min,Chu, Jun-Uk,Chun, Heoung-Jae,Kim, Jung-Sung,Choi, Kui-Won,Youn, In-Chan 대한의용생체공학회 2010 의공학회지 Vol.31 No.6
A ceramic articulating system in total hip replacement thought to be superior to metal-on-polyethylene due to its extremely low coefficient of friction and potential for high resistance to wear. But ceramic is brittle, which makes it mechanically and theoretically susceptible to fracture under certain mechanical conditions. In the current study, nine different models of ceramic ball heads were mechanically evaluated using 3D finite element(FE) analyses. It was found that the maximum stress in all ceramic models was lower than ceramic flexural strength, and it satisfied the requirements of the FDA Gaudience for artificial hip implant. Thus, ceramic ball head models introduced in the current study could be mechanically safe for clinical applications.
1907년 체제 성립과정에서 일본의 한국정책과 한국사회의 대응
한성민(Han, Sung-Min) 일본사학회 2019 일본역사연구 Vol.49 No.-
The Russo-Japanese War (1904), which broke out during the confrontation between Russia and Japan on the Korean Peninsula, resulted in the reorganization of the powers, In Europe, a confrontational system was established, represented by a ‘Triple Entente’ and ‘Dreibund’. In that extension, Japan became a major partner in the ‘Triple Entente’. As a result, the 1907 system centered on Japan was established before and after the second International Peace Conference in East Asia. In this situation, Emperor Kojong dispatched Yi Sang-sul, Yi Jun, Yi Wi-jong and Hulbert as special envoys to the Hague Peace Conference(1907). At that time, the Japanese government was aware of Korea s move to send a special envoy to Hague in advance. However, Japan did not try to prevent Emperor Kojong from sending them, nor did watch their activities without direct restraint in Hague. There were three important political intentions here. First, Japan intended to secure her right to protect Korea in the international community. Second, Japan intended to show off to the international community, that it had the ability to rule her colonies the same as other Western powers, allowing for open anti-Japanese activities by Korean envoys. Third, Japan intended to further strengthen its dominance over Korean with this case. The dispatch of special envoys to the Hague Peace Conference(1907) was the last attempt planned by Kojong as the Emperor of the Korean Empire to maintain Korea s independence. In response, the Korean community had little expectation for the Hague Peace Conference(1907) at that time. Howerever, the special envoys’ activities were enough to draw attention. However, Korean society did not give any positive meaning to their activities. As a result of the anti-Japanese activities of Korea. Japan has been strongly pressing the Korean government to increase its influence by pressing it hard. Indeed, Faced with the fact that Japan was forced to confront Kojong with the dispatch of a special envoy to The Hague. the Korean society denied the direct relationship between Kojong Emperor and the envoys.
한성민(Sung-Min Han),박성우(Sung-Woo Park),이우선(Woo-Sun Lee),서용진(Yong-Jin Seo) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
We investigated the effects of oxidizer additive on the performance of Cu-CMP process using commonly used tungsten slurry. According to the CMP removal rates and particle size distribution, and the micro-structures of surface layer as a function of oxidizer contents were greatly influenced by the slurry chemical composition of oxidizers. The difference in removal rate and roughness of copper surface are believed to cause by modification in the mechanical behavior of Al₂O₃ abrasive particles in CMP slurry.
망명자 김옥균(金玉均)에 대한 일본의 처우와 조선정책(1884~1890)
한성민(Han Sung-Min) 한국역사연구회 2018 역사와 현실 Vol.- No.109
After the failure of Gapsin Coup(甲申政變), Kim Ok-kyun(金玉均), the leader of the Enlightenment Party, fled to Japan with his comrades. They wanted to rebuild their revolutionary power with Japan"s assistance and help. But Japanese Government never deal with them as the political refugee. The Japanese Government, immediately after their refuge to Japan, denied the fact of their residence in Japan in order to avoid the responsibilities of participating in Kapsin Coup. The Government turned their face against them. But Japanese Government gradually recognized again value of Kim in the diplomatic big deal within Chosun. Because, at that time, the Dynasty was the center all the important imperial nations rushed into. Every imperial nation struggled to obtain its interest in Chosun. And so there were many inequal international agreements and military actions in Chosun such as the Korean-Russo Secret Agreement(朝露密約) and the Occupation of Kumun-do by Britain (巨文島事件). Now Japan also needed Kim’s value to have influence on Chosun. At that time, Chosun and Qing demanded that Kim should be delivered into Chosun for the responsibilities of the revolt. On the while, Japan tried Kim’s card to diplomatic negotiation with Qing Dynasty which was superior power in the Chosun after the failure of Kim’s Kapsin Coup. Therefore the problem of Kim Ok-kyun was magified in Japan. That was resisting the deal of Japanese Government by Kim and the dispatch a assassin of Chosun Government to kill Kim. Moreover, if Kim had gone to another countries hostile to Japan, Japan could not have influenced on the Chosun’s problems. Japan could not permit its political asylum to another country. Japan also tried to revise inequal international agreements with powerful countries. If Kim had been expelled, Japan’s international status to have obtain agreements would have been damaged profoundly. Only one alternative was to be sent into reclusive Ogasawara Island(小笠原島) and Hokkaido(北海道). As the diplomatic strategy of Japanese government was transformed into a hard line and getting ready to war against Qing in the early 1890s, they permitted Kim’s free dwelling or emigration but they kept watch his move. This means that the diplomatic strategy of Japanese Government which tried to evade diplomatic dispute caused by Kime Ok-kyun’s problem was changed aggressive practical policy of Kim against Chosun and Qing at this time.
한성민(Sung-Min Han),이강웅(Kang Woong Lee) 제어로봇시스템학회 2009 제어·로봇·시스템학회 논문지 Vol.15 No.1
In this paper, we proposed a navigation algorithm of the mobile robot for obstacle avoidance using a circular path planning method. The proposed method makes circular paths in order to avoid obstacles in the front side of the mobile robot. An optimal path for approaching to the target is selected and the linear and angular speeds for stable moving of the mobile robot are controlled. Obstacles are detected by image processing which reduce image data obtained from a web camera. Performance of the proposed algorithm is shown by experiments with application to the Pioneer-2DX mobile robot.
MnO₂ 연마제를 혼합한 Mixed Abraive Slurry (MAS)의 CMP 특성
한성민(Sung-Min Han),박성우(Sung-Woo Park),이우선(Woo-Sun Lee),서용진(Yong-Jin Seo) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
Chemical mechanical polishing (CMP) process has been attracted as an essential technology of multi-level interconnection. However, the COO (cost of ownership) is very high, because of high consumable cost. Especially, among the consumables, slurry dominates more than 40 %. So, we focused how to reduce the consumption of raw slurry. In this paper, MnO₂ abrasives were added de-ionized water (DIW) and pH control as a function of KOH contents. Also, the addition effects of MnO₂ abrasives and the diluted silica slurry (DSS) on CMP performances were evaluated. Finally, we have investigated the possibility of new abrasive for the oxide CMP application.
목질계 바이오차와 고로슬래그를 혼입한 시멘트 모르타르의 압축강도 특성 평가
한성민 ( Han Sung-min ),김종선 ( Kim Jong-sun ),최원창 ( Choi Won-chang ) 한국구조물진단유지관리공학회 2022 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.26 No.2
본 연구는 탄소격리효과가 있는 목질계 바이오차와 고로슬래그를 혼입한 시멘트 모르타르를 통해 압축강도 특성을 평가하였다. 목질계 바이오차 함유량이 증가함에 따라 모르타르 플로우 값이 0.6~5.5% 감소되었으며 목질계 바이오차 치환량이 시멘트 질량비의 5%까지 증가하여도 28일 압축강도 결과가 2~4.3% 증가된 것을 고려하였을 때 압축강도의 감소 없이 시멘트 저감 및 탄소격리효과를 기대할 수 있다.
슬러리 분산 및 pH가 Oxide CMP에 미치는 영향 (pp.1271-1272)
한성민(Sung-Min Han),박성우(Sung-Woo Park),이우선(Woo-Sun Lee),서용진(Yong-Jin Seo) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
CMP(chemical mechanical polishing) process has been attracted as an essential technology of multi-level interconnection. However, the COO(cost of ownership) is very high, because of high consumable cost. Especially, among the consumables, slurry dominates more than 40 %. So, we focused how to reduce the consumption of raw slurry. In this paper, ZrO₂, CeO₂, and MnO₂ abrasives were added de-ionized water (DIW) and pH control as a function of KOH contents. We have investigate the possibility of new abrasive for the oxide CMP application.
한성민 ( Han Sung-min ),김선희 ( Kim Sun-hee ),최기봉 ( Choi Ki-bong ) 한국구조물진단유지관리공학회 2021 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.25 No.1
본 연구는 바잘트 섬유 시트로 보강된 철근콘크리트 보의 전단성능을 확인하기 위해 휨실험을 수행하였다. 바잘트 섬유 시트의 전단보강방법을 변수로 두어 4점 재하방식으로 수행하여 얻은 결과값을 비교 분석하였다. 무보강 철근콘크리트 보와 바잘트 섬유 시트로 보강한 철근콘크리트 보와 비교하였을 때 항복하중은 1겹으로 90도 보강하였을 경우 17.16%, 1겹으로 45도 보강하였을 경우 9.7%, U형으로 보강하였을 경우 15.5% 증가하였다. 최대하중의 경우 바잘트 섬유 시트를 1겹으로 90도 보강하였을 경우 11.2%, 1겹으로 45도 보강하였을 경우 0.02%, U형으로 보강하였을 경우 2.8% 증가하였다. 따라서 바잘트 섬유 시트로 보강하였을 경우 철근콘크리트 구조물의 전단보강에 효과가 있을 것이라 판단된다.