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윤성민 ( Seong min Yoon ),김지영 ( Ji Young Kim ),최승진 ( Seung Jin Choi ),안계련 ( Ke Ryun Ahn ),백혜리 ( Hae Ri Baek ),한사원 ( Sang Won Han ),이은지 ( Eun Jin Lee ) 대한내과학회 2010 대한내과학회지 Vol.79 No.5
Sclerosing epithelioid fibrosarcoma (SEF) is a rare and poorly recognized variant of fibrosarcoma of deep soft tissue. We report the case of a 34-year-old woman who presented with a painful and palpable mass in the left buttock that was diagnosed as SEF. (Korean J Med 79:583-586, 2010)
윤성민(Yoon Seong Min),손승화(Sohn Seung Hwa),이정인(Lee Jung In) 한국부동산학회 2016 不動産學報 Vol.67 No.-
본 연구에서는 주택가격에 영향을 미치는 장단기 거시경제적 결정요인을 발견하고자 하였다. 실증분석을 위한 표본은 7개 대도시의 1986년 1월부터 2015년 12월까지의 월별자료로 구성된 지역패널자료이고, 분석에 이용된 방법은 패널단위근 검정, 패널공적분 검정 및 관계식 추정, 패널백터오차수정모형, Granger 인과관계 검정이다. 실증분석에서 얻은 주요 결론을 요약하면 다음과 같다. 첫째, 이자율, 예금은행의 주택대출액, KOSPI 종합지수 등 전국 수준의 변수들과 주택금융신용보증 공급, 주택전세가격, 가구수, 65세이상 인구 비중 등 지역경제 수준의 변수들이 지역주택매매가격에 장기적으로 영향을 미치는 것으로 나타났다. 둘째, 이자율, 주택금융신용보증, 65세이상 인구비중, 취업자수, 경기동행지수 등이 단기적으로 지역주택매매가격에 영향을 미치는 것으로 나타났고, 주택전세가격, 전국예금은행주택대출, 가구수, KOSPI 지수는 단기적인 영향이 없는 것으로 나타났다. 1. CONTENTS (1) RESEARCH OBJECTIVES This study examined the long-run and short-run macroeconomic determinants of regional house price in Korea. (2) RESEARCH METHOD We used regional panel data composed of monthly data of seven major cities over the period from January 1986 to December 2015, and analyzed using the econometric methods of panel unit root test, panel cointegration test, panel vector error correction model (PVECM), and Granger causality test. (3) RESEARCH FINDINGS We found that the variables of interest rate, house purchase loan, stock market index, guarantee for housing financial credit, chonsei price, number of household, and ratio of aged person over 65 years have significant impacts to the house price dynamics in the long-run. We also found that interest rate, guarantee for housing financial credit, ratio of aged person, number of employed person, and business cycle index have significant impacts to the house price in the short-run. 2. RESULTS The macroeconomic long-run and short-run determinants of the house price are not the same. Thus, it is necessary to importantly consider this discrepancy for the house price forecasting, investment decision on housing market, and policy response to boom and crash of housing market.
박영삼,이승윤,윤성민,정순원,유병곤,Park, Young-Sam,Lee, Seung-Yun,Yoon, Sung-Min,Jung, Soon-Won,Yu, Byoung-Gon 한국진공학회 2008 Applied Science and Convergence Technology Vol.17 No.4
Programmable metalization cell (PMC) memory 소자로도 명명되는 고체 전해질 메모리 소자는 비휘발성, 고속 및 높은 ON/OFF 저항비 등을 갖고 있기 때문에, 차세대 비휘발성 메모리로서 각광받고 있는 소자 중의 하나이다. 본 논문에서는 고체 전해질 메모리 소자의 동작 원리를 먼저 소개하고자 한다. 또한, 메모리향 소자 개발을 진행 중인 미국 코지키 교수 그룹, 비메모리향 소자 개발을 진행 중인 일본 NEC 그룹 등의 해외 연구진과, Te 계열의 칼코게나이드 합금을 채택하여 소자를 제작한 한국전자통신연구원 및 충남대학교 등의 국내 연구진의 연구 성과를 소개하고자 한다. Programmable metallizaton cell (PMC) memory device has been known as one of the next generation non-volatile memory devices, because it includes non-volatility, high speed and high ON/OFF resistance ratio. This paper reviews the operation principle of the device. Besides, the recent research results of professor Kozicki who firstly invented the device and investigated it for the memory applications, NEC corporation which studied it for the FPGA (field programmable gate array) switch applications, ETRI and chungnam national university which examined Te-based devices are introduced.
스텔렛 철갑상어 (Acipenser ruthenus)의 난 발생과 자치어 형태발달
박재민 ( Jae Min Park ),윤성민 ( Seung Min Yoon ),서영석 ( Young Seok Seo ),한경호 ( Kyeong Ho Han ),유동재 ( Dong Jae Yoo ) 한국어류학회 2016 韓國魚類學會誌 Vol.28 No.3
스텔렛 철갑상어 Acipenser ruthenus의 양식기술 개발 및 분류학적 기초자료를 확보하기 위하여 난 발생 및 자치어 형태 발달을 조사하였다. 친어는 2005년 6월에 PVC 원형수조 (Ø 5m) 수온 16.0±1.0℃에서 성숙시킨 암수 1쌍을 사용하였다. 난은 타원형의 불투명한 침성 점착란으로 크기는 3.83~3.85 (3.84±0.01) mm (n=10)였다. 난 발생은 건식법으로 인공수정 시켰고, 수정 1시간 후에 배반이 형성, 수정 31시간 후에 낭배말기에 도달하였으며, 수정 82시간 (50%) 후에 부화하였다. 부화 직후 자어는 전장 10.1~10.3 (10.2±0.11) mm (n=10) 로 복부에 큰 난황을 달고 있었다. 부화 17일 후에는 전장 26.2~32.4 (29.3±4.39) mm (n=10)로 등지느러미 앞쪽이 11개의 굳비늘이 흔적 적으로 발달하기 시작하였다. 부화 50일 후에는 전장 86.4~93.1 (89.8±4.71) mm (n=10)로 지느러미 기조가 모두 정수에 도달하여 치어기로 이행하였다. To develop cultivation technique for Acipenser ruthenus and secure basic taxonomic materials, this study examined egg development and larva morphological development. This study used a couple of male and female broodstork matured in a PVC circle water tank (Ø 5 m) with the water temperature of 16.0±1.0 ℃ in June 2005. They were oval opaque and sinking cohesive eggs and the sizes of them were between 3.83~3.85 (3.84±0.01) mm (n=10). As for the egg development, the dry process was adopted with artificial insemination in this study, and an hour after the insemination, the embryo disks were developed, 31 hours after the insemination, they reached the end of gastrula stage, and 82 hours (50%) after the insemination, they were hatched. Right after the hatch, the total lengths of larvae were 10.1~10.3 (10.2±0.11) mm (n=10) with big yolks in the venter. 17 days after the hatch, the total lengths of them were 26.2~32.4 (29.3±4.39) mm (n=10) and in the front of a dorsal fin there were 11 scute scales that started to make tracing development. As 50 days after the hatch, the total lengths were 86.4~93.1 (89.8±4.71) mm (n=10), and fin rays all reached integer, they were moved to the larva apparatus.
Polypropylene의 유동층 가스화에서 활성탄 사용에 따른 수증기 가스화 특성
이태원(Tae Won Lee),김민성(Min Sung Kim),노형철(Hyeong Cheol Roh),이정민(Jung Min Lee),이승엽(Seung Yeop Lee),이민재(Min Jae Lee),윤성민(Sung Min Yoon),라호원(Ho Won Ra),서명원(Myung Won Seo) 한국환경에너지공학회 2024 환경에너지공학 Vol.19 No.1
Plastic waste is increasing globally, especially the increased use of delivery containers has become a significant social issue after COVID-19. Therefore, the need for the eco-friendly disposal methods of Polypropylene (PP), which is the primary material used in delivery containers, is increasing. In this study, 1kg/h lab-scale bubbling fluidized bed gasifier was used for PP steam gasification at the temperature of 850°C and steam/carbon (S/C) ratio of 1.0. The use of an activated carbon (AC) bed for tar cracking and the intensification of hydrogen production was investigated. Steam gasification with AC produces product gas composed of H2, CO, CH4, and CO2 composition of 38.23, 2.4, 58.83, 0.53 vol%, respectively. The tar concentration of product gas with AC is decreased by 52.8%. It demonstrated that steam gasification with AC bed can be used for the recycling of PP wastes and the production of hydrogen-rich gas for further applications.
이연정(Lee Yeon jeong),고승환(Ko Seung Hwan),윤성민(Yoon Seong Min) 한국지역개발학회 2014 韓國地域開發學會誌 Vol.26 No.2
This paper analyzed the impacts of existence of leading industries(ID) on regional economic performances. We found that half of the 16 regions in Korea has more than one leading industry. Based on the existence of leading industries, we divided 16 regions into two groups and applied Wilcoxon rank sum test. According to the empirical results, the existence of leading industries has a positive impact on the regional economic growth rate and GRDP per capita. However, when we considered both the existence of leading industries and the ratio of regional representative industries(RI), there is a difference between the group with ID & higher ratio of RI and the group without ID & lower ratio of RI.
산업구조의 다양성이 실업과 고용불안정에 미치는 영향: 패널회귀모형을 이용한 지역경제 분석
류수열 ( Su Yeol Ryu ),최기홍 ( Ki Hong Choi ),고승환 ( Seung Hwan Ko ),윤성민 ( Seong Min Yoon ) 한국경제지리학회 2014 한국경제지리학회지 Vol.17 No.1
This paper investigates how industrial diversity affects unemployment and employment instability from the perspective of the regional economy. Through this analysis, we examine how the industry-specific policy to promote some industry strategically in most of areas affects the stability of the regional economy. We measure Herfindahl indexes using the 1993-2010 data of 16 regions in Korea, and use panel regression model for empirical analysis. The main results from this empirical analysis are summarized as follows. First, we confirm that the industrial structure of most regions has been changed to the direction of specialization in 1990s and to the direction of diversification in 2000s through analyzing the changes in the values of Herfindahl indexes during the given period. Second, we find from the estimation results of panel regression model that the higher industrial diversity in most of regions is, the lower the unem-ployment rate is. However, a statistically significant relationship between industrial diversity and employment instability only partially confirmed. Third, there exist high unemployment rate and employment instability in most metropolitan areas, but it is hard to say that this relationship is highly statistically significant. From the results of the empirical analysis, it is likely that the industry-specific policies such as the regional strategic industry development policies unlike policy goals make the unemployment rate to rise and economic instability to increase. From the viewpoint of employment aspects, the strategies to increase industrial diversity would be desirable rather than those to specialize in the industrial structure.