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IMPROVING GLOBAL SUPPLY CHAIN RISK IDENTIFICATION USING RCF
MYUNGHYUN JUNG,이세연,김민중,HYUNGJO KIM,JAEHO LEE 한국산업응용수학회 2022 Journal of the Korean Society for Industrial and A Vol.26 No.4
This paper contains an introduction to industrial problems, solutions, and results conducted with the Korea Association of Machinery Industry. The client company commissioned the problem of upgrading the method of identifying global supply risky items. Accordingly, the factors affecting the supply and demand of imported items in the global supply chain were identified and the method of selecting risky items was studied and delivered. Through research and discussions with the client companies, it is confirmed that the most suitable factors for identifying global supply risky items are ’import size’, ’import dependence’, and ’trend abnormality’. The meaning of each indicator is introduced, and risky items are selected using export/import data until October 2022. Through this paper, it is expected that countries and companies will be able to identify global supply risky items in advance and prepare for risks in the new normal situation: the economic situation caused by infectious diseases such as the COVID-19 pandemic; and the export/import regulation due to geopolitical problems. The client company will include in his report, the method presented in this paper and the risky items selected by the method.
Se-Jung Yoon,윤영원,이병권,권혁문,황기철,Myunghyun Kim,Woochul Chang,홍범기,이영호,박순정,민필기,임세중 생화학분자생물학회 2009 Experimental and molecular medicine Vol.41 No.11
Advanced glycation endproducts (AGEs)-induced vascular smooth muscle cell (VSMCs) proliferation and formation of reactive oxygen species (ROS) are emerging as one of the important mechanisms of diabetic vasculopathy but little is known about the antioxidative action of HMG CoA reductase inhibitor (statin) on AGEs. We hypothesized that statin might reduce AGEs-induced intracellular ROS of VSMCs and analyzed the possible mechanism of action of statin in AGEs-induced cellular signaling. Aortic smooth muscle cell of Sprague-Dawley rat (RASMC) culture was done using the different levels of AGEs stimulation in the presence or absence of statin. The proliferation of RASMC, ROS formation and cellular signaling was evaluated and neointimal formation after balloon injury in diabetic rats was analyzed. Increasing concentration of AGEs stimulation was associated with increased RASMC proliferation and increased ROS formation and they were decreased with statin in a dose-dependent manner. Increased NF-κB p65, phosphorylated ERK, phosphorylated p38 MAPK, cyclooxygenase- 2, and c-jun by AGEs stimulation were noted and their expression was inhibited by statin. Neointimal formation after balloon injury was much thicker in diabetic rats than the sham-treated group but less neointimal growth was observed in those treated with statin after balloon injury. Increased ROS formation, subsequent activation of MAPK system and increased VSMC proliferation may be possible mechanisms of diabetic vasculopathy induced by AGEs and statin may play a key role in the treatment of AGEs-induced diabetic atherosclerosis.
박수정(Soo-Jung Park),송명현(Myunghyun Song) 한국콘텐츠학회 2016 한국콘텐츠학회논문지 Vol.16 No.11
대학에서 수업컨설팅이 중요한 교수지원 프로그램으로 대두되고 있는 상황에서, 이 연구는 4년제 대학의 교수학습지원센터에서 운영되고 있는 수업컨설팅 체제를 분석하고, 이를 기반으로 수업컨설팅 체제에 대한 시사점을 도출하고자 하였다. 이를 위해, 2015년 7–8월, 홈페이지 조사와 전화 인터뷰를 통해 대학의 수업컨설팅 프로그램 유형, 실태, 활성화 사례를 조사하였다. 연구결과는 다음과 같다. 첫째, 대학 수업컨설팅 프로그램은 9개 유형으로 분석되었다. 둘째, 수업컨설팅 프로그램 제공 현황과 실행 현황은 일치하지 않았다. 셋째, 주로 대학 내부 인력을 컨설턴트를 활용하여 컨설팅을 수행하고 있다. 넷째, 다양한 결과 활용과 보상제도가 운영되고 있다. 수업컨설팅의 활성화 사례를 살펴보면, ‘다양한 컨설팅 프로그램-컨설턴트 pool-결과 활용 및 보상제도-타 프로그램 연계’를 통해 수업컨설팅 체제가 유기적으로 운영되고 있다. 이러한 연구결과가 수업컨설팅 체제에 주는 시사점은 다음과 같다. 교수자를 정확히 진단하고 요구에 기반한 맞춤형 컨설팅 체제 구축, 다양한 배경을 지닌 컨설팅단을 양성할 수 있는 대학 내 지원과 외부 기관 간 협력, 교수자들이 공동으로 성찰·반성해나가는 수업컨설팅, 대학 차원에서 수업컨설팅에 대한 제도적 지원과 인식 제고 등이 필요하다. The instructional consulting has emerged as an important teaching development program in university. So, this research aims to analyze the instructional consultation system in centers for teaching and learning in four-year-course universities and deduce implications from it. To this end, focusing on instruction consulting program types, status, and example cases for promotion, homepages were reviewed and phone interview was conducted from July to August, 2015. The results were as follows. First, 9 types of instruction consulting system in universities were found. Second, the status of offering the programs and implementing them did not correspond to each other. Third, universities were mainly using in-school consultants. Fourth, universities had various ways of using the results and reward systems. Lastly, as for the example cases, through various consulting programs, consultant pools, use of results and reward system, and connection with other programs, it was found that instruction consulting system was operated organically. The implications that the research result offers are as follows. First, there should be accurate diagnosis of instructors and customized consulting systems based on needs. Second, there should be supports inside schools and cooperation between external organizations that can help raise consulting teams of various backgrounds. Third, the instructional consulting should be made through joint considerations and reflections of instructors. Fourth, universities should provide systematical support for instructional consultation and have higher awareness about it.
폐금속광산 하류 논토양의 중금속에 대한 인체흡수도 평가
김민경 ( Minkyeong Kim ),홍성창 ( Sungchang Hong ),김명현 ( Myunghyun Kim ),최순군 ( Soonkun Choi ),이종식 ( Jongsik Lee ),소규호 ( Kyuho So ),정구복 ( Goobok Jung ) 한국환경농학회 2015 한국환경농학회지 Vol.34 No.3
For the heavy metal cotamination sites, it is very important to estimate the human bioavailability quotients for heavy metals in paddy soils released from mine tailings, which is a major source of contamination in Korea, and to assess the human health risks of heavy metals. METHODS AND RESULTS: This experiment was carried out to investigate the human bioavailability quotient of the heavy metals in paddy soils below part of the closed metalliferous mine. For estimating the human bioavailability quotients for heavy metals, 30 paddy soils below part of the closed mine were collected, and analyzed for Cd, Cu, Pb, Zn, and As using simple bioavailability extraction test(SBET). The quantities of Cd, Cu, Pb, Zn and As extracted from paddy soils below part of the mine by using the SBET analysis were 28.1, 17.3, 34.1, 14.6 and 2.3% respectively. Specially, the maximum values of Cd, Pb and Zn were 73.3, 81.5 and 58.1% of human bioavailability quotient, respectively, and varied considerably among the sampling sites. The human bioavailability quotient of Cd, Cu, Pb and Zn in soils near the closed mine showed significant positive correlation among soil pH value, O.M.and Ex. Ca. contents, while it correlated negatively between soil Ex. K and Ex. Mg contents in paddy soils. Also, its of Cd, Cu, Pb and Zn in paddy soils showed significant positive correlation with 0.1M HCl extractable and total contents, while in soils, it correlated negatively with As content in soil near the closed mine. CONCLUSION: The results of the simple bioavailability extraction test (SBET) indicate that regular ingestion of soils by the local population could be closed a potential health threat due to long-term heavy metals exposure in these mine areas.