• 제목/요약/키워드: The development of technology

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System Dynamics를 이용한 원자력발전의 기술가치 평가 (A System Dynamics Approach for Valuing Nuclear Power Technology)

  • 이용석
    • 한국시스템다이내믹스연구
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    • 제7권2호
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    • pp.57-80
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    • 2006
  • Nuclear technology made a great contribution to the national economy and society by localization of nuclear power plant design, and by stabilization of electricity price, etc. It is very important to conduct the retrospective analysis for the nuclear technology contribution to the national economy and society, but it is more important to conduct prospective analysis for the nuclear technology contribution. The term "technology value" is often used in the prospective analysis to value the result of technology development. There are various definitions of technology value, but generally it means the increment of future revenue or the reduction of future cost by technology development. These technology valuation methods are widely used in various fields (information technology or energy technology, etc). The main objective of this research is to develop valuation methodology that represents unique characteristics of nuclear power technology. The valuation methodology that incorporates market share changes of generation technologies was developed. The technology valuation model which consists of five modules (electricity demand forecast module, technology development module, market share module, electricity generation module, total cost module) to incorporate market share changes of generation technologies was developed. The nuclear power technology value assessed by this technology valuation model was 3 times more than the value assessed by the conventional method. So it was confirmed that it is very important to incorporates market share changes of generation technologies. The valuation results of nuclear power technology in this study can be used as policy data for ensuring the benefits of nuclear power R&D (Research and Development) investment.

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Shoot induction and regeneration using internodal transverse thin cell layer culture in Sesamum indicum L.

  • Chattopadhyaya, Banani;Banerjee, Joydeep;Basu, Asitava;Sen, Soumitra K.;Maiti, Mrinal K.
    • Plant Biotechnology Reports
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    • 제4권2호
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    • pp.173-178
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    • 2010
  • An efficient protocol for shoot regeneration was developed for sesame (Sesamum indicum L.) internodes using the transverse thin cell layer (tTCL) culture method. The frequency of shoot regeneration and the number of adventitious buds produced from regenerated shoots depend significantly on explant age, thickness of the tTCL sections, and the phytohormones supplemented to the culture medium. A combination of 6-benzyladenine (2.0 $mg\;l^{-1}$) and a-naphthaleneacetic acid (0.5 $mg\;l^{-1}$) was found to be the best phytohormone combination for shoot bud induction, with the maximum number of shoots obtained when the tTCL sections were 0.5-1.0 mm thick and derived from 4- to 6-week-old seedlings of sesame. Well-developed shoots were rooted on MS medium without phytohormones, and 80% of the regenerated plantlets were successfully established in soil.

국내 항만기술 개발정책과 중장기 발전방안 연구 (A Study on the Port Technology Policy and Development Strategy)

  • 최상희;원승환
    • 한국항해항만학회:학술대회논문집
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    • 한국항해항만학회 2006년도 추계학술대회 논문집(제1권)
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    • pp.331-337
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    • 2006
  • 세계적으로 항만의 대형화, 첨단화, 효율화 등 항만환경의 변화가 급격하게 이루어지고 있으며, 선진항만들은 대륙별로 중심항만의 입지를 구축하기 위해 항만기술의 연구개발과 투자를 지속하고 있다. 항만의 대형화, 첨단화, 효율화에 대응하기 위해서는 지속적인 항만기술 개발이 필요하며, 이를 통해 자국 항만산업 발전과 더불어 세계 항만기술 관련 산업의 선점과 수출 극대화를 이룰 수 있을 것이다. 따라서 본 논문에서는 국내외 항만기술 개발의 현황과 추진정책을 살펴보고 항만기술 분야의 정립을 통해 국내 항만기술개발의 발전전략과 정책방향을 제시하고자 한다.

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포스트 플라즈마를 이용한 질화의 질화층 형성에 미치는 전처리의 영향에 대한 연구 (A Study on the Effect of Pre-treatment on the Formation of Nitriding Layer by Post Plasma)

  • 문경일;변상모;조용기;김상권;김성완
    • 열처리공학회지
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    • 제18권1호
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    • pp.24-28
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    • 2005
  • New post plasma nitriding can achieve a high uniformity that have been difficult in DC nitriding and have a high productivity comparable to gas nitriding. However, it has not a enough high nitriding potential for a rapid nitriding, because surface activation or ion etching in the general plasma nitriding cannot be expected. Thus, in this study, the effects of pre-treatments with oxidation and reduction gas have been investigated to improve the nitriding kinetics of post plasma nitriding. An effective pre-treatment consisting of oxidation and reduction resulted in the increase of surface energy of STD 11. This induced the surface hardness and the effective nitriding depth of STD 11. It is thought that the increase of the surface energy and the surface area with pre-treatment promote the nucleation of nitriding layer.

국내 항만기술 개발정책과 중장기 발전방안 연구 (A Study on the Port Technology Policy and Development Strategy)

  • 원승환;최상희
    • 한국항해항만학회지
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    • 제31권1호
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    • pp.99-105
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    • 2007
  • 세계적으로 항만의 대형화, 첨단화, 효율화 등 항만환경의 변화가 급격하게 이루어지고 있으며, 선진항만들은 대륙별로 중심항만의 입지를 구축하기 위해 항만기술의 연구개발과 투자를 지속하고 있다. 항만의 대형화, 첨단화, 효율화에 대응하기 위해서는 지속적인 항만기술 개발이 필요하며, 이를 통해 자국 항만산업 발전과 더불어 세계 항만기술 관련 산업의 선점과 수출 극대화를 이를 수 있을 것이다. 따라서 본 논문에서는 국내외 항만기술 개발의 현황과 추진정책을 살펴보고 항만기술 분야의 정립을 통해 국내 항만기술개발의 발전전략과 정책방향을 제시하고자 한다.