• Title/Summary/Keyword: S.korea

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INVASION OF THE UK ORIGINATED QUANTITY SURVEYING PROFESSION INTO KOREA CONSTRUCTION INDUSTRY. A REVIEW OF THE QUANTITY SURVEYING CONSULTANCY SERVICES IN KOREAN CONSTRUCTION MARKET

  • Chan-Ho Yoon;Min-Jae Lee;Dong-Youl Lee
    • International conference on construction engineering and project management
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    • 2009.05a
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    • pp.1419-1425
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    • 2009
  • Quantity Surveying Profession is a new breed with a history of only less than seven years in S. Korea' s Construction Industry. In this paper, the research aims to investigate the background of the market entrance of this profession in Korean Construction Industry, and the current market direction and future market demands. The research concludes that climate changes in Real Estate markets in relation to Project Financing practices caused by economic crisis of late 1997's, enabled the UK originated QSP sustainable in S. Korea. Moreover it was pointed out that the services of QSP current available in S. Korea's market attributed the different aspect compared to traditional quantity surveying services prevailed in UK. Finally it was apparent that the evolutional direction of the future quantity surveying market in S. Korea is most likely toward multidisciplinary skilled services profession processing not only broader architectural knowledges but cost consciousness, specialty in construction costs and construction contract aspects and transparency in ethical manner.

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State Estimation Algorithm in Korea Power System & Improvement Direction (우리나라 계통에서의 상태추정 알고리즘 및 향후 개선방향)

  • Jeon, Jae-Ryong;Ryu, Hyun-Keun;Song, Tae-Yong
    • Proceedings of the KIEE Conference
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    • 2008.07a
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    • pp.97-98
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    • 2008
  • 전력계통이 커지고 복잡해짐에 따라 전력계통의 상태를 정확하게 파악하고 안정하게 운영하는데 EMS의 역할이 더욱 커지고 있다. EMS에서 상태추정은 다른 응용프로그램에 대한 기본 자료를 제공하므로 중요하다. 우리나라는 EMS와 MOS를 이용하여 전력계통을 안정하게 운영하고 있다. 본 논문에서는 EMS와 MOS의 상태추정 알고리즘을 소개하고 차이점을 비교하였다. 또한 상태추정 파라미터 운영현황을 분석하여 이를 바탕으로 앞으로의 개선방향을 제시하였다.

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Drift Diffusion of Radiation-produced Point Defects to Edge Dislocation

  • Park, S.S.;Chang, K.O.;Choi, S.P.;Kim, C.O.
    • Nuclear Engineering and Technology
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    • v.31 no.2
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    • pp.151-156
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    • 1999
  • Under the heavy irradiation of crystalline materials when the production and the recombination of interstitials and vacancies are included, the diffusion equations become nonlinear. An effort has been made to arrange an appropriate transformation of these nonlinear differential equations to more solvable Poisson's equations, finally analytical solutions for simultaneously calculating the concentrations of interstitials and vacancies in the angular dependent Cottrell's potential of the edge dislocation have been derived from the well-known Green's theorem and perturbation theory.

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Directions of ROK Navy's Future Developments in Responding to Asymmetric Threats posed by North Korea (북한 비대칭 위협 대응한 한국 해군전력 발전방향)

  • Boo, Hyeong-wook
    • Strategy21
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    • s.40
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    • pp.190-215
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    • 2016
  • As North Korea's asymmetric threats are growing, there have been numerous discussions to find out effective counter-measures and many official plans and procurements efforts have been established. However, discussions on ROK Navy's roles in countering North Korea's asymmetric threats have been taken place very limitedly. Decision makers and military planners put enormous efforts in getting counter-measures, however, most of the options on the table are systems of Army and Air Force. This is true if one looks at components of Kill-Chain, KAMD, and KMPR. With worsening security environment of the Korean peninsula, it has been said by many commentators that ROK Navy needs to consider expanding its roles in countering against North Korea's asymmetric military threats. They asked ROK Navy to go beyond the mind-set that has confined Navy's roles in deterring North Korean naval threats. That is, ROK Navy should fight 'from the sea' as well as fight 'on the sea.' If ROK Navy begins to think about fight 'from the sea,' there would be many possibilities for the Navy to be a part of countering North Korea's asymmetric military threats. In order to pursue proactive roles in countering North Korea's asymmetric threat, ROK Navy needs to consider various options. Massive missile forces, nuclear-propelled submarines, naval special forces may be some of them. With those measures, ROK Navy would launch massive and decisive attacks from the sea without risking survivability of our forces. Considering North Korean Navy's weakness, it is very probable that sea would be safer place than ground or sky. Expanding ROK Navy's roles and being a proactive deterrent forces against North Korean asymmetric threats would provide very reliable counter-measures to South Korean military. Thus, military planners should think how to take the best advantage of expanded ROK Navy's roles and capabilities against North Korean asymmetric threats.

Sintering and Optical Properties of ZnS Nanoparticles Sintered by Spark Plasma Sintering (방전 플라즈마 소결법에 의한 ZnS 나노입자의 소결과 광학적 특성)

  • Kim, Chang-Il;Kim, You-Bi;Yeo, Seo-Yeong;Hong, Youn-Woo;Yun, Ji-Sun;Park, Woon-Ik;Jeong, Young-Hun;Cho, Jeong-Ho;Paik, Jong-Hoo
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.30 no.6
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    • pp.349-355
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    • 2017
  • Zinc sulphide (ZnS) nanoparticles were fabricated by hydrothermal synthesis at $180^{\circ}C$ for 12 h. Two kinds of ZnS powder (hydrothermal synthesized ZnS and commercial ZnS) were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM) for phase and microstructure, respectively. The XRD patterns showed that all ZnS nanoparticles have a sphalerite (cubic) structure. The nanoparticles of two different ZnS powders were sintered by spark plasma sintering. The sintered ZnS were analyzed by XRD, SEM, and FT-IR. We found that the transmittance of the infrared region is highly dependent on the density and crystal structure of sintered ZnS and the purity of the starting ZnS powder.