http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 정우영 (검색결과 1,106 건)
- 무료
- 기관 내 무료
- 유료
-
-
-
-
-
-
-
-
정우영,구본상,한승헌 대한토목학회 2012 KSCE JOURNAL OF CIVIL ENGINEERING Vol.16 No.1
Since 2005, the Build-Transfer-Lease (BTL) scheme has been successful in delivering projects such as schools and government housing to the general public while relieving the fiscal constraints of the Korean government. Recently, the inclusion of ‘supplementary’ facilities to the main BTL project has been posited as an alternative solution to increase a BTL project’s rate of returns. However, the absence of a structured approach to evaluate the financial viability of this modified scheme has thus far made its use restrictive. Determining the viability of the modified scheme requires identifying the relative project size of the supplementary facility and the appropriation of the additional revenue between the government and concessionaire that ensure that both parties benefit, while accounting for the increased risk in liquidity. This research proposes a framework using multi-optimization linear programming and Monte Carlo simulation that determines the optimal size of the supplementary facility and the appropriate revenue distribution ratio that minimize government payments and maximize the internal rate of return, while maintaining positive project cash flows. A retrospective case study on a military housing project demonstrates that using the proposed framework enables the addition of a shopping mall which increases the overall rate of return while minimizing the risks of the project.
-
-
정우영,왕태권,조용식,Jung,Wooyoung,Wang,Taekwon,Cho,Yong-Sik 한국방재학회 2013 한국방재학회논문집 Vol.13 No.6
해안구조물 근처에 입사하는 파의 정확한 분석은 구조물의 안정성과 직접적으로 연관성이 있다. 그러므로 정확성을 높이기 위해서는 2차원 수치모형 대신 3차원 수치모형이 파의 변형을 파악하는데 사용되어야만 한다. 본 연구에서 사용된 수치모형은 space-filtered averaged Navier-Stokes 방정식을 지배방정식으로 사용하며, Smagorinsky SGS(sub-grid scale) 모델의 LES 기법을 기반으로 두고 있다. 고립파는 지진해일의 거동을 나타내는 입사파로서 적합하며, 변형 없이 장거리를 전파시킬 수 있다. 본 연구에서는 경사면에서 발생하는 최대 처오름높이를 예측하고, 수리모형실험 결과와 비교 및 분석하였다. An accurate analysis of incident waves around coastal structures is directly indispensable to the safety of those structures. Thus, a three-dimensional numerical model is strongly recommended to analyze wave transformation instead of a two-dimensional model. In this study, a numerical model solves the space-filtered averaged Navier-Stokes equations. The LES approach is adopted to model the turbulence effect by using the Smagorinsky SGS model. The solitary waves are probably most suitable incident waves representing behaviors of tsunamis and they can propagate a long distance without transformation. The maximum run-up heights of solitary waves attacking on slopes are investigated and the accuracy of the numerical model is checked by comparing the laboratory measurements related to maximum run-up heights of solitary waves.
ScienceON연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
