해상풍력발전을 위한 연안지역의 난류에너지 특성 수치연구

유정우 ( Jung Woo Yoo ),이순환 ( Soon Hwan Lee ),이화운 ( Hwa Woon Lee ) 한국환경과학회 2014 한국환경과학회지 Vol.23 No.9

To clarify the characteristics of TKE (Turbulence Kinetic Energy) variation for offshore wind power development, several numerical experiments using WRF were carried out in three different coastal area of the Korean Peninsula. Buoyancy, mechanical and shear production term of the TKE budget are fundamental elements in the production or dissipation of turbulence. Turbulent kinetic energy of the south coast region was higher than in other sea areas due to the higher sea surface temperature and strong wind speed. In south coast region, strong wind passing through the Korea Strait is caused by channelling effect of the terrain of the Geoje Island. Although wind speed is weak in east coast, because of large difference in wind speed between the upper and lower layer, the development of mechanical turbulence tend to be predominant. Since lower sea surface temperature and smaller wind shear were detected in west coastal region, the possibility of turbulence production not so great in comparison with other regions. The understanding of the characteristics of turbulence in three different coastal region can be reduced the uncertainty of offshore wind construction.

WRF-CMAQ 결합모델을 이용한 에어로졸 피드백 효과가 한반도 일사량에 미치는 영향 연구

유정우(Jung-Woo Yoo),박순영(Soon-Young Park),전원배(WonBae Jeon),김동혁(Dong-Hyeok Kim),이화운(HwaWoon Lee),이순환(Soon-Hwan Lee),김현구(Hyun-Goo Kim) 한국대기환경학회 2017 한국대기환경학회지 Vol.33 No.5

타워 관측 자료를 이용한 연안 대기 경계층 내 바람 자원의 연직 변동 특성

유정우(Jung-Woo Yoo),이화운(Hwa-Woon Lee),이순환(Soon-Hwan Lee),김동혁(Dong-Hyeok Kim) 한국대기환경학회 2012 한국대기환경학회지 Vol.28 No.6

제4회 논문 발표회 발표 논문 : 칼빈의 구원론에서 bona opera의 위치, 논평(칼빈의 구원론에서 bona opera의 위치)

유정우 ( Jung Woo Yoo ),최윤배 한국복음주의역사신학회 2001 역사신학 논총 Vol.3 No.-

민영교도소 평가와 제도적 개선방안에 관한 연구

유영재(Yoo Young Jae),유정우(Lyou Jung Woo) 한국공안행정학회 2016 한국공안행정학회보 Vol.25 No.1

국내 최초의 민영교도소인 소망교도소가 2010년 12월 1일 개소하였다. 국가권력의 핵심인 교정분야가 민간에 위탁되는 사례였기 때문에 개소초반부터 현재까지 많은 관심이 집중되고 있다. 법무부는 6년간의 소망교도소 운영성과를 긍정적으로 평가하고, 지난 2015년 2월 5일 (재)아가페와의 교정업무 위탁계약 기간을 20년 갱신하였다. 현재 소망교도소는 인성교육 특화형 민영교도소로서 성장발전 해 나가기 위해 지금까지 드러난 운영상 취약점들을 개선해 나가야 할 전환점에 서 있다. 또한 법무부로서도 안착기에 접어들고 있는 민영교도소 제도가 향후 지속적으로 성과를 거둘 수 있도록 그간의 민영화 정책을 생산적으로 재검토 해 볼 시점에 있다. 따라서 이 연구에서는 지난 5년간의 소망교도소 실제 운영경험을 통해 드러난 민영교도소 제도의 구조적 모순과 운영상 문제점을 분석하여, 향후 민영교도소가 올바르게 정착될 수 있도록 몇 가지 제언을 하였다. 첫째, 소망교도소 관련 규제를 완화하고 교정기관으로서의 지위가 보장될 필요가 있다. 둘째, 교정본부와 민영교도소간 상호보완적 협력관계 정립될 필요가 있다. 셋째, 민영교도소만의 특성화라 할 수 있는 집중인성교육을 강화시켜 교육특성화 교정기관으로 자리매김 시켜야한다. 넷째, 권력적 업무에 해당하는 보호장비, 무기사용, 권리제한, 수형자 처우, 가석방 업무 등은 감독관의 승인을 받도록 하고, 비권력적 업무에 해당하는 서무, 경리, 유지관리, 직업훈련, 교육, 분류심사 등의 업무는 민영교도소 직원에 의해 특별한 규제 없이 업무 수행할 수 있도록 자율성을 확보해줄 필요가 있다. 다섯째, 현재 민영교도소 업무 총괄은 교정본부 분류심사과에서 맡고 있다. 그러나 실제 업무는 각 부서에 분산되어 있고 관련 업무 창구가 일원화되어 있지 않아 필요한 행정조치가 불필요하게 지연되는 경우가 일어난다. 이를 해결하기 위해 교정공무원 교과제를 활용하는 방안을 모색해 볼 필요가 있다. 여섯째, 「민영교도소 등의 설치ㆍ운영에 관한 법률」 제32조는 지원관 제도를 규정하고 있다. 위탁계약서상 요건을 완화ㆍ확대하여 민영교도소에 파견되는 지원관을 통해 법무부 업무 소통창구를 일원화하여 유사한 효과를 거두는 방법도 활용해 볼 만하다. 마지막으로, 사업비 산출기준을 합리화하는 것이다. 교정법인은 재산세 등 제세공과금을 납부하여야 하며 법인의 운영에 필요한 경비를 기부금 이외의 방법으로 충당할 방법이 사실상 없기 때문이다. 이를 반영하여 이익금에 상당하는 재정적 보상을 계약서에 포함시키는 계약서 개정이 검토될 필요가 있다. Korea s first private prison, Somang Correctional Institution opened on December 1, 2010. As it was the case that the field of correction as one of the national core authority was entrusted to the private, the public interest has focused until now. Operating performance over the past six years was positively evaluated and the Ministry of Justice renewed the contract for 20 years with Agape last February 5, 2015. Somang Correctional Institution currently reach a turning point to improve their weaknesses in order to make a growth and development as a personality-education-specialized private prison. It s also time for the Ministry of Justice to review the privatization policy that the private prison system on the ballast continue desired result. Accordingly, this study made some suggestions so that a private prison can be properly established hereinafter through the analysis of structural contradiction and operational problems of the private prison system, which have been exposed through actual operational experience in Somang Correctional Institution for the past five years. First, there’s the necessity of having to relax the regulations related to Somang Correctional Institution, and to guarantee the status as a correctional institution. Second, it’s necessary to establish the complementary cooperative relations between correct between the Korea Correctional Service and a private prison correct. Third, it’s necessary to get a private prison settled as an education- specialized correctional institution by intensifying an intensive personality education which could be called a private prison’s own specialization. Fourth, it’s necessary to let a private prison get approval from a superintendent in relation to protective gear, use of weapons, restriction on a right, inmate treatment, and conditional release business, etc., which fall under authority-based business, and to secure autonomy for private prison officers so that they can perform jobs without special regulations with regard to the business like general affairs, accounting, maintenance, vocational training, education and classification review, etc. which fall under non-authority-based business. Fifth, at present, the Classification & Examination Division of the Korea Correctional Service is taking charge of the business generalization of a private prison. However, actual business is broken up into each division, and the window for related business is not unified, causing necessary administrative measures to be unnecessarily delayed. To solve it, there is the need to inquire into the plan to utilize subject assignments for correctional officers. Sixth, Article 32 of the Private Prison Act prescribes the support officer system. It’s worthwhile to make use of the method of getting a similar effect by unifying the communication window for the business of the Ministry of Justice through a support officer dispatched to a private prison by easing off & expanding requirements in a consignment agreement. Lastly, it’s important to rationalize the calculation standard of working expenses. A correctional corporation has to pay taxes and the public utilities’ charge, such as property tax, etc. It’s because there is no virtual method of covering necessary expenses for managing corporation but contributions. Therefore, there is the necessity of examining the revision of a contract, through which financial compensation equivalent to profits is included into profits by reflecting such an aspect.

전산유체역학 모델을 이용한 도시 지표 피복 변화가 대기 경계층 열적 환경에 미치는 영향 분석

김지선,유정우,나문수,김용길,이순환,Kim, Ji-Seon,Yoo, Jung-Woo,Na, Mun-Soo,Kim, Yong-Gil,Lee, Soon-Hwan 한국환경과학회 2020 한국환경과학회지 Vol.29 No.12

With global warming and the rapid increase in urbanization accompanied by a concentration of population, the urban heat island effects (UHI) have become an important environmental issue. In this study, rooftop greening and permeable asphalt pavement were selected as measures to reduce urban heat island and applied to a simple virtual urban environment to simulate temperature change using ENVI-met. A total of five measures were tested by dividing the partial and whole area application of each measure. The results showed that the temperature range of the base experiment is 33.11-37.11 ℃, with the UTCI comfort level described as strong heat and very strong heat stress. A case applied permeable asphalt has a greater temperature difference than a rooftop greening case, the larger the area where each condition was applied, the greater the temperature change was.

지렁이를 이용한 바이오디젤과 바이오디젤 유래 Neopentyl Polyol Ester 윤활유 베이스의 독성테스트

정해영(Haeyoung Jung),박완선(Wanseon Park),이재용(Jaeyong Lee),유정우(Jeong Woo Yoo),김의용(Eui Yong Kim),채희정(Hee Jeong Chae) 한국생물공학회 2005 KSBB Journal Vol.20 No.2

미세조류를 이용한 바이오디젤과 바이오디젤 유래 Neopentyl Polyol Ester 윤활유 베이스의 독성테스트

정해영(Haeyoung Jung),이중헌(Jung-Heon Lee),유정우(Jeong Woo Yoo),김의용(Eui Yong Kim),채희정(Hee Jeong Chae) 한국생물공학회 2005 KSBB Journal Vol.20 No.1

태풍 수치모의에서 GPS-RO 인공위성을 사용한 관측 자료동화 효과

박순영 ( Soon-young Park ),유정우 ( Jung-woo Yoo ),강남영 ( Nam-young Kang ),이순환 ( Soon-hwan Lee ) 한국환경과학회 2017 한국환경과학회지 Vol.26 No.5

In order to simulate a typhoon precisely, the satellite observation data has been assimilated using WRF (Weather Research and Forecasting model) three-Dimensional Variational (3DVAR) data assimilation system. The observation data used in 3DVAR was GPS Radio Occultation (GPS-RO) data which is loaded on Low-Earth Orbit (LEO) satellite. The refractivity of Earth is deduced by temperature, pressure, and water vapor. GPS-RO data can be obtained with this refractivity when the satellite passes the limb position with respect to its original orbit. In this paper, two typhoon cases were simulated to examine the characteristics of data assimilation. One had been occurred in the Western Pacific from 16 to 25 October, 2015, and the other had affected Korean Peninsula from 22 to 29 August, 2012. In the simulation results, the typhoon track between background (BGR) and assimilation (3DV) run were significantly different when the track appeared to be rapidly change. The surface wind speed showed large difference for the long forecasting time because the GPS-RO data contained much information in the upper level, and it took a time to impact on the surface wind. Along with the modified typhoon track, the differences in the horizontal distribution of accumulated rain rate was remarkable with the range of 600~500 mm. During 7 days, we estimated the characteristics between daily assimilated simulation (3DV) and initial time assimilation (3DV_7). Because 3DV_7 demonstrated the accurate track of typhoon and its meteorological variables, the differences in two experiments have found to be insignificant. Using observed rain rate data at 79 surface observatories, the statistical analysis has been carried on for the evaluation of quantitative improvement. Although all experiments showed underestimated rain amount because of low model resolution (27 km), the reduced Mean Bias and Root-Mean-Square Error were found to be 2.92 mm and 4.53 mm, respectively.

원격 탐사 기반 해양 표면 온도의 미세 분포 차이에 따른 강설량 예측성 연구

이순환 ( Soon Hwan Lee ),유정우 ( Jung Woo Yoo ) 한국환경과학회 2014 한국환경과학회지 Vol.23 No.8

In order to understand the relation between the distribution of sea surface temperature and heavy snowfall over western coast of the Korean peninsula, several numerical assessments were carried out. Numerical model used in this study is WRF, and sea surface temperature data were FNL(National Center for Environment Prediction-Final operational global analysis), RTG(Real Time Global analysis), and OSTIA(Operational Sea Surface Temperature and Sea Ice Analysis). There were produced on the basis of remote sensing data, such as a variety of satellite and in situ observation. The analysis focused on the heavy snowfall over Honam districts for 2 days from 29 December 2010. In comparison with RTG and OSTIA SST data, sensible and latent heat fluexes estimated by numerical simulation with FNL data were higher than those with RTG and OSTIA SST data, due to higher sea surface temperature of FNL. General distribution of RTG and OSTIA SST showed similar, however, fine spatial differences appear in near western coast of the peninsula. Estimated snow fall amount with OSTIA SST was occurred far from the western coast because of higher SST over sea far from coast than that near coast. On the other hand, snowfall amount near coast is larger than that over distance sea in simulation with RTG SST. The difference of snowfall amount between numerical assessment with RTG and OSTIA is induced from the fine difference of SST spatial distributions over the Yellow sea. So, the prediction accuracy of snowfall amount is strongly associated with the SST distribution not only over near coast but also over far from the western coast of the Korean peninsula.