http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
정민수,Jung, Min-Soo 한국데이터정보과학회 2009 한국데이터정보과학회지 Vol.20 No.1
스마트카드는 작은 크기의 마이크로 컴퓨터칩을 내장하고 있다. 이 칩은 프로세서, RAM, ROM, 클럭, 버스 그리고 암호전용 코프로세서 등을 포함하고 있다. 따라서 이 칩은 RFID 태그와 비교해서 가격이 비싸고, 복잡하지만 안전한 칩이다. 스마트카드의 주요 응용분야는 전자뱅킹이나 안전한 통신 관련 분야이다. 자바카드는 개방형 플랫폼 중 가장 널리 사용되는데 그 이유는 자바카드의 보안성, 플랫폼 독립성, 그리고 빠른 개발 싸이클 때문이다. 하지만 자바카드는 실행속도가 느리기 때문에 자바 카드의 성능개선은 중요한 연구 분야가 되어왔다. 본 논문에서는 효과적인 트랜잭션버퍼 관리 방법을 제안하여 자바카드의 성능을 개선시켰으며 실험을 통하여 그 성능을 입증하였다. Smart card has a small sized micro computer chip. This chip contains processor, RAM, ROM, clock, bus system and crypto-co-processor. Hence it is more expensive, complicated and secure chip compared with RFID tag. The main application area of smart card is e-banking and secure communications. There are two kinds of smart card platforms; open platform and closed one. Java card is the most popular open platform because of its security, platform independency, fast developing cycle. However, the speed of Java card is slower than other ones, hence there have been hot research topics to improve the performance of Java card. In this paper, we propose an efficient transaction buffer management to improve the performance of Java card. The experimental result shows the advantage of our method.
국내 예방의학 분야의 공저자.핵심어 네트워크와 군집 양상 - 대한예방의학회지($1991{\sim}2006$) 게재논문의 분석 -
정민수,정동준,Jung, Min-Soo,Chung, Dong-Jun 대한예방의학회 2008 예방의학회지 Vol.41 No.1
Objectives : This study evaluated knowledge structure and its effect factor by analysis of co-author and keyword networks in Korea's preventive medicine sector. Methods : The data was extracted from 873 papers listed in the Journal of Preventive Medicine and Public Health, and was transformed into a co-author and keyword matrix where the existence of a 'link' was judged by impact factors calculated by the weight value of the role and rate of author participation. Research achievement was dependent upon the author's status and networking index, as analyzed by neighborhood degree, multidimensional scaling, correspondence analysis, and multiple regression. Results : Co-author networks developed as randomness network in the center of a few high-productivity researchers. In particular, closeness centrality was more developed than degree centrality. Also, power law distribution was discovered in impact factor and research productivity by college affiliation. In multiple regression, the effect of the author's role was significant in both the impact factor calculated by the participatory rate and the number of listed articles. However, the number of listed articles varied by sex. Conclusions : This study shows that the small world phenomenon exists in co-author and keyword networks in a journal, as in citation networks. However, the differentiation of knowledge structure in the field of preventive medicine was relatively restricted by specialization.
북한예방의학회지 ($1997{\sim}2006$) 게재논문의 핵심어 네트워크 분석
정민수,정동준,최만규,Jung, Min-Soo,Chung, Dong-Jun,Choi, Man-Kyu 대한예방의학회 2008 예방의학회지 Vol.41 No.6
Objectives : There are very few researches on North Korea's academic activities. Furthermore, it is doubtful that the available data are reliable. This study investigated research activities and knowledge structure in the field of Preventive Medicine in North Korea with a network analysis using co-authors and keywords. Methods : The data was composed of the North Korean Journal of preventive medicine ranged from Vol. 1 of 1997 to Vol. 4 of 2006. It was the matrix of 1,172 articles by 1,567 co-authors. We applied R procedure for keywords abstraction, and then sought for the outcome of network forms by spring-KK and shrinking network. Results : To comprehend the whole networks explicitly demonstrated that the academic activities in North Korea s preventive medicine were predisposed to centralization as similar as South Korea's, but on the other aspect they were prone to one-off intermittent segmentation. The principal co-author networks were formulated around some outstanding medical universities seemingly in addition to possible intervention by major researchers. The knowledge structure of network was based on experimentation judging from keywords such as drug, immunity, virus detection, infection, bacteria, anti-inflammation, etc. Conclusions : Though North Korea is a socialist regime, there were network of academic activities, which were deemed the existence of inducive mechanism affordable for free research. Article keywords has laid greater emphasis on experiment-based bacterial defection, sustainable immune system and prevention of infection. The kind of trend was a consistent characteristic in preventive medicine of North Korea haying close correlation with Koryo medical science.
페로브스카이트 태양전지에서의 저온 용액 공정의 BCP 버퍼층 효과
정민수,최인우,김동석,Jung, Minsu,Choi, In Woo,Kim, Dong Suk 한국전기전자재료학회 2021 전기전자재료학회논문지 Vol.34 No.1
Inorganic-organic hybrid perovskite solar cells have demonstrated considerable improvements, reaching 25.5% of certified power conversion efficiency in 2020 from 3.8% in 2009. In normal structured perovskite solar cells, TiO2 electron-transporting materials require heat treatment process at a high temperature over 450℃ to induce crystallinity. Inverted perovskite solar cells have also been studied to exclude the additional thermal process by using [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as a non-oxide electron-transporting layer. However, the drawback of the PCBM layer is a charge accumulation at the interface between PCBM and a metal electrode. The impact of bathocuproin (BCP) buffer layer on photovoltaic performance has been investigated herein to solve the problem of PCBM. 2-mM BCP-modified perovskite solar cells were observed to exhibit a maximum efficiency of 12.03% compared with BCP-free counterparts (5.82%) due to the suppression of the charge accumulation at the PCBM-Au interface and the resulting reduction of the charge recombination between perovskite and the PCBM layer.
습식표면처리 및 열 사이클에 따른 Cu/SiN<sub>x</sub> 계면접착에너지 평가 및 분석
정민수,김정규,강희오,황욱중,박영배,Jeong, Minsu,Kim, Jeong-Kyu,Kang, Hee-Oh,Hwang, Wook-Jung,Park, Young-Bae 한국마이크로전자및패키징학회 2014 마이크로전자 및 패키징학회지 Vol.21 No.1
반도체 미세구리배선 적용을 위하여 구리배선의 습식 표면처리 및 열 사이클에 따른 구리 박막과 실리콘질화막 도포층 사이의 계면접착에너지를 4점굽힘시험을 통해 정량적으로 평가하였다. 구리배선을 화학적 기계적 연마한 후 습식 표면처리를 통하여 구리 박막과 실리콘질화막의 계면접착에너지는 $10.57J/m^2$에서 $14.87J/m^2$로 증가하였다. $-45{\sim}175^{\circ}C$범위에서 250사이클 후, 표면처리를 하지 않은 시편의 계면접착에너지는 $5.64J/m^2$으로, 표면처리를 한 시편은 $7.34J/m^2$으로 감소하였으며, 모든 시편의 박리계면은 구리 박막과 실리콘질화막 계면으로 확인되었다. X-선 광전자 분광법으로 계면 결합 상태를 분석한 결과, 화학적 기계적 연마 공정 후 구리배선의 표면 산화물이 습식표면처리에 의해 효과적으로 제거된 것을 확인하였다. 또한, 열 사이클 처리동안, 구리 박막과 실리콘질화막의 큰 열 팽창 계수 차이로 인한 열응력으로 인하여 구리 박막과 실리콘질화막 계면이 취약해지고, 계면을 통한 산소유입에 따른 구리 산화층이 증가하여 계면접착에너지가 저하된 것으로 판단된다. Effects of wet chemical treatment and thermal cycle conditions on the quantitative interfacial adhesion energy of $Cu/SiN_x$ thin film interfaces were evaluated by 4-point bending test method. The test samples were cleaned by chemical treatment after Cu chemical-mechanical polishing (CMP). The thermal cycle test between Cu and $SiN_x$ capping layer was experimented at the temperature, -45 to $175^{\circ}C$ for 250 cycles. The measured interfacial adhesion energy increased from 10.57 to $14.87J/m^2$ after surface chemical treatment. After 250 thermal cycles, the interfacial adhesion energy decreased to $5.64J/m^2$ and $7.34J/m^2$ for without chemical treatment and with chemical treatment, respectively. The delaminated interfaces were confirmed as $Cu/SiN_x$ interface by using the scanning electron microscope and energy dispersive spectroscopy. From X-ray photoelectron spectroscopy analysis results, the relative Cu oxide amounts between $SiN_x$ and Cu decreased by chemical treatment and increased after thermal cycle. The thermal stress due to the mismatch of thermal expansion coefficient during thermal cycle seemed to weaken the $Cu/SiN_x$ interface adhesion, which led to increased CuO amounts at Cu film surface.
정민수 ( Jung Min Soo ) 한국기초조형학회 2016 기초조형학연구 Vol.17 No.6
본 연구의 목적은 콘텐츠 관련 시장 동향 분석을 통해 영유아 영상콘텐츠 교육산업 분야가 발전할 수 있는 방안을 제언하는 것이다. 연구대상은 한국콘텐츠진흥원의 연구 발표 자료와 콘텐츠 관련 보도자료 및 콘텐츠 관련 사이트로 하였다. 분석 결과를 정리하면 다음과 같다. 1)2012년 세계 콘텐츠시장 규모는 2조 2,20억 달러로 전년 대비 5.0% 성장한 것으로 집계되었다. 2)인터넷 광고 규모가 증가함에 따라 모바일에서 검색을 제외한 온라인 검색은 2015년 상반기에도 전체 시장규모 가운데 37%의 비중을 차지하며 가장 높은 점유율을 나타냈다. 3)한국 영유아 교육산업 시장에서 만3세에 영어교육을 처음 시작한 경우가 현재 고등학생 중에서는 3.2%에 불과했으나 현재 유아 중에서는 35.3%에 달해, 만3세에 영어교육을 시작한 경우가 10년 사이에 11배로 증가한 것으로 드러나, 조기영어교육 현상이 사회적으로 더욱 확대(심화되고 있다는 사실이 확인되었다. 4)중국 영유아 교육산업 시장은 도시민 자녀 1인당 지출이 월평균 300위안, 유아교육의 주 대상인 4~6세 인구를 약 978만 명이라고 하면 중국의 유아교육 시장 규모는 연간 350억 위안을 넘는다. 5)SNS시장의 새로운 수익 사업 모델을 분석해 보면 트위터는 `Video Fingerprinting` 기술을 기반으로 TV 광고와 트위터 프로모션을 결합시켜 브랜딩 활동을 지원하는 솔루션을 발표했다. 이 기술을 통해 디지털 마케터들이 TV 광고가 노출되는 것과 트위터의 활동을 실시간으로 확인할 수 있다. 6)유투브를 통한 수익창출 시장을 분석해 보면 스마트폰과 같이 동영상을 촬영할 수 있는 수단이 이제는 널리 보편화 되어서 개인이 동영상을 기획하고 제작하기 쉬운 환경으로 변화하였기에 일반인에게도 다가온 새로운 기회들 중에 하나가 될 수 있다. 이러한 콘텐츠 관련 시장 변화 분석을 근거로 유투브를 활용한 영유아 영상콘텐츠 교육산업의 영어, 인도어, 중국어, 한국어로 각각 제작된 영유아 영상콘텐츠를 4장에서 다루었다. 그리고 분석한 자료들의 분석결과를 바탕으로 영유아 영상콘텐츠 교육산업 활성화를 위한 제언은 5장에서 다루었다. The purpose of this study was, by analyzing content-related market trends, to suggest the measures to develop the field of image contents for infants in the education industry. The sources of the study were research presentation data by Korea Creative content Agency, content-related press releases and content-related sites. The outcome of the analysis was as follows. 1) The scale of the world`s content market in 2012 was 2,022 billion dollar, 5.0% up compared with the previous year. 2) In line with the increase of internet advertisements, online search excluding mobile search accounted for 37% out of the total market in the first half of 2015, marking the highest share. 3) In Korea`s education market, cases in which infants initially began to get English education at the age of three among the current high school students were merely 3.2%, while those in which the current infants did reached 35.3%, revealing that in 10 years` time, the relevant rate increased by 11 times. This confirmed the fact that the phenomenon of early English education in Korea has been more expanded and intensified. 4) China`s education market for infants marked 300 yuan monthly on average spending per child of urban residents, which says the scale of China`s infant education market exceeds 35 billion yuan per year, supposed the population at the age of 4-6 - main targets of infant education - is around 9.78 million. 5) As a result of the analysis of new profit business models in the SNS market, the study found that Twitter had announced solutions supporting branding activity by combining TV ads and twitter promotions based on `Video Fingerprinting` technology. Through this technology, digital marketers were able to ascertain exposure of TV ads and Twitter`s activity. 6) The result of the analysis of profit-creating market via Youtube showed that means like Smartphone to shoot videos were widely popular, offering ordinary people an environment where they could design and produce video as a new opportunity that couldn`t be imagined in the past. Based on this analysis of content-related market change, Chapter 4 of this study dealt with image contents for infants in the education industry, produced each in English, Hindi, Chinese, Korean. Chapter 5, building on the analysis result, proposed measures to activate the education industry for image contents for infants.
정민수(Jung, Minsoo) 한국열린교육학회 2021 열린교육연구 Vol.29 No.3
본 연구는 초등학교 예비교사가 갖춰야 할 시민성 구성요인을 탐색해보고 예비교사의 시민성 측정도구를 개발하여 타당화하는데 목적이 있다. 이를 위해 예비교사를 위한 시민성 측정도구에 포함될 하위구인들을 밝히고 예비교사의 시민성에 관한 문헌연구와 전문가 의견을 수렴하여 글로벌 시민성, 디지털 시민성, 학교 시민성 3개 영역에 대한 초기문항을 개발하였다. 그리고 신뢰도 분석을 통해 확정한 25개 문항에 대한 탐색적 요인분석으로 5요인을 추출해냈다. 이 과정에서 일부 요인의 문항내용이 미세하게 조정되었다. 이후 확인적 요인분석을 통해 예비교사의 시민성이 크게 연대, 비판, 실천, 공유, 참여로 구분된다는 선행연구를 근거로 고차 요인구조의 적합여부를 판단하였다. 그 결과 1요인 고차요인 모형의 측정문항이 5개 하위요인에서 안정적인 신뢰성을 나타내고 있음을 확인하였다. 이에 개발된 예비교사의 시민성 측정도구는 예비교사에게 꼭 필요한 교직역량에 관한 5개의 하위요인을 적절히 반영하고 있으며, 문항내용의 타당성이 잘 설명되었다고 볼 수 있었다. 결론적으로 본 예비교사를 위한 시민성 측정도구는 학생 시민(student citizen)의 위상과 역할이 주목받는 현시점에서 그 수준을 탐색할 수 있는 시험적 검사도구가 될 것으로 기대되었다. 또한 앞으로 예비교사의 시민성 역량을 강화하는 프로그램으로 시행하거나 개발할 때 유용한 기초정보를 제공해줄 것으로 기대되었다. The purpose of this study is to explore the elements of citizenship that elementary school pre-service teachers should have, and to develop and validate a pre-service teacher s citizenship measurement tool. To this end, we have identified sub-jobs to be included in the citizenship measurement tool for prospective teachers. In addition, by collecting literature research and expert opinions on citizenship of pre-service teachers, initial questions were developed in three areas: global citizenship, digital citizenship, and school citizenship. And 5 factors were extracted through exploratory factor analysis for 25 items confirmed through reliability analysis. In this process, the item content of some factors was finely adjusted. After that, through a confirmatory factor analysis, the suitability of the higher-order factor structure was judged based on previous studies that the citizenship of pre-service teachers was largely divided into solidarity, criticism, practice, sharing, and participation. As a result, the measurement items of the 1-factor high-order factor model showed stable reliability in 5 sub-factors. The developed tool for measuring citizenship of pre-service teachers appropriately reflects the five sub-factors related to teaching competency, which is essential for pre-service teachers, and it can be seen that the validity of the content of the item has been explained. In conclusion, this tool for measuring citizenship for pre-service teachers was expected to be a test tool to explore the level of student citizens at the present time, where the status and role of student citizens are attracting attention. In addition, it is expected to provide useful basic information when implementing or developing a program that strengthens the citizenship competency of prospective teachers in the future.