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강수량예측에서 편이보정방법과 GCM 선택에 대한 불확실성 비교
송영훈,정은성,Song, Young Hoon,Chung, Eun-Sung 한국수자원학회 2020 한국수자원학회논문집 Vol.53 No.4
Many climate studies have used the general circulation models (GCMs) for climate change, which can be currently available more than sixty GCMs as part of the Assessment Report (AR5). There are several types of uncertainty in climate studies using GCMs. Various studies are currently being conducted to reduce the uncertainty associated with GCMs, and the bias correction method used to reduce the difference between the simulated and the observed rainfall. Therefore, this study mainly considered climate change scenarios from nine GCMs, and then quantile mapping methods were applied to correct biases in climate change scenarios for each station during the historical period (1970-2005). Moreover, the monthly rainfall for the future period (2011-2100) is obtained from the RCP 4.5 scenario. Based on the bias-corrected rainfall, the standard deviation and the inter-quartile range (IQR) from the first to third quartiles were estimated. For 2071-2100, the uncertainty for the selection of GCMs is larger than that for the selection of bias correction methods and vice versa for 2011-2040. Therefore, this study showed that the selection of GCMs and the bias correction methods can affect the result for the future climate projection.
난민법 제정의 의미와 향후 과제 ; 난민법 제정과 난민의 권리보호: 법적 보호를 넘어 정착 지원프로그램 개발을 위하여
송영훈 ( Young Hoon Song ),이순복 ( Soon Bok Lee ) 서울대학교 공익인권법센터 2012 공익과 인권 Vol.12 No.-
이 글은 난민법을 통해 난민의 지위를 부여하는 것을 넘어서 난민의 지위를 부여 받은 사람들이 한국사회의 구성원으로서 정착할 수 있기 위해 정부 혹은 시민사회가 고려할 만한 점들을 미국과 스웨덴의 난민재정착 지원프로그램을 통하여 제시하고 있다. 특히 향후 한국의 정착 지원 개발을 위한 시사점을 (1) 누가 난민정착을 지원할 것인가, (2) 어떤 정착 지원을 할 것인가, (3) 극복해야 할 과제는 무엇인가로 나누어서 다루고 있다. 비록 한국이 동아시아에서 최초로 난민법을 통과시킨 국가이기는 하나, 난민지위를 인정하는 것만으로는 진정 난민의 인권을 보호하고 증진하기에 충분하지 않다. 따라서, 난민들에 대한 효율적인 정착 지원을 위해서는 정부와 시민단체 간의 역할 재정립, 난민들의 (임시) 주거시설 확보와 취업지원프로그램 마련, 난민들의 생활실태 및 요구조사 등이 가장 시급하게 해결되어야 할 과제이다. The purpose of this article is to introduce refugee resettlement programs of the United States of America and Sweden and provide policy suggestions for the development of (re)settlement programs for refugees in South Korea. The suggestions focus on three themes such as who should be in charge of refugee resettlement and assistance; what programs should be provided for the successful (re)settlement; what should be done to make (re)settlement programs more effective. After passing the refugee law, the government and refugee assistance network in Korea need to articulate further legal provisions regarding refugee status determination and (re)settlement assistance. Yet, (re)positioning the roles of the government and NGOs in raising funds, providing services, solving problems in housing refugees, establishing employmentassistance programs, and investigating and understanding the needs of refugees are as much important challenges to be faced as the articulation of legal provisions.
송영훈(Young-Hoon Song),차민석(Min-suk Cha),김관태(Kwan-Tae Kim),이대훈(Dae Hoon Lee),김동현(Dong-Hyun Kim) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
Methane reforming process using plasma/combustion phenomena has been investigated. The tested atmospheric pressure plasma generation techniques are corona discharge, DBD (Dielectric Barrier Discharge), spark, micro hollow-cathode, microwave torch plasma, and gliding arc. In these comparison tests, hydrogen is produced through direct methane decomposition process (CH₄→C+2H₂). The test results showed that none of the above plasma techniques is economically feasible because of the large operating power consumption. The power consumption, however, can be significantly decreased when hydrogen is produced by the partial oxidation process (CH₄+1/2 O₂→CO+2H₂). In the test of partial oxidation process, one of the most critical factors is O₂/C ratio. As O₂/C ratio increases up to 1, both methane conversion rate and hydrogen yield increase, which results in lower specific power consumption Detailed analysis showed that both plasma chemistry and heat released by combustion contribute to such effective syngas production process.
송영훈(Young-Hoon Song),김형일(Hyung-Il Kim) 한국고분자학회 2022 폴리머 Vol.46 No.1
Chloroprene rubber(CR)의 내열 및 내유 특성과 유사한 물성의 고무 소재로 ethylene propylene diene monomer(EPDM)과 CR 및 nitrile-butadiene rubber(NBR) 고무 블렌드를 개발하고자 하였다. 이러한 블렌드를 기반으로 고무 컴파운드를 제조하여 그 특성을 조사하였다. CR/EPDM 컴파운드는 내열 특성이 향상되었지만 상용성이 우수하지 못하여 내유 특성이 저하되었다. NBR/EPDM 컴파운드는 내열 특성이 향상되었지만 EPDM 조성이 증가함에 따라 내유 특성이 저하되었다. CR 또는 bromo isobutylene isoprene rubber(BIIR)로 상용화된 NBR/EPDM 컴파운드는 CR 및 B I I R 함량 5 phr에서 내열 및 내유 특성이 향상되었다. BIIR보다 CR로 상용화된 NBR/EPDM 컴파운드가 NBR 성분을 더 균일하게 분산시켜 내유 특성 향상에 효과적이었다. Blending ethylene propylene diene monomer (EPDM) with chloroprene rubber (CR) and nitrile-butadiene rubber (NBR) was carried out to develop a rubber having similar thermal and oil resistance to that of CR. Both thermal and oil resistance of rubber compounds were studied based on these rubber blends. The CR/EPDM compounds showed improved thermal resistance, but the oil resistance was not satisfactory due to the poor miscibility between CR and EPDM. The NBR/EPDM compounds showed improved thermal resistance, but the oil resistance was not satisfactory as the EPDM content increased in the blend. The NBR/EPDM compounds, which were compatibilized with CR or bromo isobutylene isoprene rubber (BIIR), showed the improved thermal and oil resistance at the compatibilizer content of 5 phr. NBR/EPDM compound, which was compatibilized with CR and had a finer distribution of NBR, was more effective in improving oil resistance compared to the NBR/EPDM compound compatibilized with BIIR.
송영훈 ( Young Hoon Song ),유동열 ( Dong Youl Yoo ) 대전대학교 한의학연구소 2011 한의학연구소 논문집 Vol.20 No.1
Purpose: This paper is aimed to report the effects of oriental medicine on general pain after childbirth Methods: Two patients, 35 years old and 33 years old, who had a general pain after childbirth, were enrolled in this study. They received oriental medicine for several months. During the treatments, we gave them Gamikunguitang(加味芎歸湯) 2 times, each for 3 weeks. we check changes of symptoms. Results: After the oriental medicine treatments, symptoms of general pain after childbirth and other symptoms were decreased or disappeared. Conclusion: This clinical cases indicate that Gamikunguitang(加味芎歸湯) is effective in treatment of the general pain after childbirth progress and relapse of symptoms. More linical data and studies are requested for the treatment of general pain after childbirth.
플라즈마 산화와 암모니아 SCR 복합탈질공정의 엔진적용 연구
송영훈(Young-Hoon Song),이재옥(Jae Ok Lee),차민석(Min Suk Cha),김석준(Seock Joon Kim),류정인(Jeong-In Ryu) 한국연소학회 2007 한국연소학회지 Vol.12 No.4
The technique of NH₃ SCR (selective catalytic reduction) assisted by plasma oxidation has been applied to a 2,000 cc diesel engine. The present combined deNOx process consists of two steps. The first step is that about 50% of emitted NO from the engine is oxidized to NO₂ in a plasma oxidation process. The second step is that NO and NO₂ are simultaneously reduced to N₂ in the NH₃ SCR process. The engine test results showed that the deNOx rates of the present combined process are higher than those of conventional SCR process by 20%. Such a high performance of the combined process is noticeable especially, when the exhaust temperature are relatively low, i.e., 170-220℃. To provide a feasibility of the present technique the effects of operating conditions, such as an electrical input energy, an exhaust gas temperature, an initial NO concentration, and the amount of hydrocarbon addition, were discussed.