• Steel and Composite Structures
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• 제5권2_3호
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• pp.247-258
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• 2005

This paper outlines the current steel design climate and describes some recent and unusual designs using structural steel or composite steel and concrete which have been carried out in Hong Kong and the East Asia region. Composite structural systems for very tall buildings are outlined. A case study of concept designs for one of these is presented. Two further case studies are presented: a refurbishment project where the use of steel and innovative strengthening techniques allowed an additional five stories to be built on an existing reinforced concrete frame and a monumental sculpture.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2011년도 제42회 하계학술대회
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• pp.694-695
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• 2011

The recent concerns over the threat of global climate change and the requirements of national reduction of $CO_2$ emission have led to the diversification of energy resources and a large scale integration of renewable resources. In these circumstances, the policy decision currently made by the government sector includes several programs to promote the equipment of large scale generating assets to use wind energy. However, the power systems and wind farms need such innovative operation scheme schemes that maintain an adequate level of system security for continuing growth of renewable resources. This paper presents a method for determining optimal operating points for wind farms by making use of a nonlinear interior point method.

• The International Journal of Sustainable Building Technology and Urban Development
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• 제9권2호
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• pp.87-94
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• 2018

Different countries create their own green building rating system to be in line with sustainable development as a response to the urgent call for solution for Climate Change and degradation of the environment due to rapid population growth and economic development. This study conducts a critical review on the Philippine national voluntary green building rating system, BERDE, in comparison with South Korea's national voluntary green building rating system, G-SEED and U.S. rating system LEED. Their categories, building types assessed, and assessment methods were compared side by side to seek better practice(s) for green building rating assessment for Philippine green building projects.

• 융복합기술연구소 논문집
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• 제12권1호
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• pp.19-23
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• 2022

Interest in hydrogen production to respond to climate change is increasing. Until now, hydrogen has been mainly produced through the SMR (Steam Methane Reforming) process using natural gas. A large amount of CO₂ is emitted in the hydrogen production process through SMR, and the gas flow including CO₂ generated in the SMR process has different characteristics for each emission source, so it is important to apply a suitable CO₂ capture process. In the case of PSA tail gas or synthesis gas, the applicability of an amine-based process has been confirmed or demonstrated close to a commercial level. However, in the case of the flue gas generated from the reformer, it is still difficult to apply the conventional amine-based process because the partial pressure of CO₂ is relatively low. Energy-saving innovative absorbents such as phase separation absorbents can be a solution to these difficulties.

• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.606-614
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• 2005

This paper deals with new realizations of research, scientific development, managerial and economic optimizations for prefabricated building systems. In the literature, all scientific fields are worked out based on the efficiencies, costs, benefits, choice of execution design, technical demands, aesthetical point of view, as well as the total economics. In the present example of a school-building for communities in the third world, the following criteria have been regarded: The optimal superstructure of prefabricated concrete building systems; the particularity of countries of the Third World (e.g. the climate, the political and the economic conditions); the time for construction and necessary innovative developments for an economically optimized superstructure. Added to this are alternative construction-methods and costs for a simple but variable system which can be adapted to changing functions, where variability should be the main point. For example, a school building that is to be adapted by varying number of rooms to cater for the growing number of pupils.

• 기술혁신학회지
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• 제10권2호
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• pp.206-229
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• 2007

본 연구는 국내 공공 및 민간 부문 전자, 통신, 기계, 화학분야 22개 연구기관 92개 팀을 대상으로 수집한 실증 자료를 통해 프로젝트 리더에 의한 챔피언 리더십이 팀에 대한 자원 공급 및 조직 지원, 팀원들의 팀 효력에 미치는 영향을 고찰하였다. 분석결과 프로젝트 리더의 챔피언 리더십은 높은 수준의 조직 지원 및 자원 공급과 관련되어 있으며, 프로젝트 리더의 챔피언 리더십을 높게 지각하는 팀의 팀원들은 보다 높은 수준의 팀 효력을 보였다. 또한, 프로젝트 유형 및 혁신 분위기는 챔피언 리더십과 자원 공급 및 조직 지원, 팀 효력 사이의 관계를 조절하고 있음을 발견하였다. 끝으로, 연구결과의 이론적 및 실무적 시사점이 논의되고 연구의 한계점과 미래의 연구방향이 제시되었다.

• 한국경제지리학회지
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• 제12권3호
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• pp.260-276
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• 2009

캐나다 나이아가라 지역은 겨울에 영하 20도를 오르내리는 추위로 유명하다. 그런데도 불구하고 이 지역은 예로부터 포도, 자두, 옥수수 등과 같은 과일과 채소가 많이 생산되고 있다. 이 지역의 선도적인 포도주 양조업자들은 1970년대 중반부터 포도나무를 고급 포도주용으로 개량하고, 기후관계로 타 지역에서 쉽게 생산할 수 없는 아이스와인을 생산하기 시작하여 불과 30여 년만에 세계적인 아이스와인 클러스터로 성장하였다. 나이아가라의 포도주 양조업자들은 포도원(Winery)을 중심으로 음악회 등 각종 컨벤션을 개최하여 포도원 관광객을 유치하는가 하면, 대학과 연구소 등과 협력하여 포도재배와 포도주 양조에 관한 연구개발 및 교육분야에 많은 고용기회를 창출하였다. 또한 주 정부는 주류 판매망과 와인 카운슬(Ontario Wine Council)이라는 기관을 통해 포도주 산업 클러스터의 성장과 발전에 기여하였다. 본 연구는 나이아가라의 이러한 산업집적 현상을 지역혁신론에 입각해서 분석하고, 정책적, 이론적 시사점을 제시한다.

• 무역상무연구
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• 제12권
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• pp.587-613
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• 1999

Environmental problems such as global climate change, depletion, ocean and air pollution, and resource degradation-compounded by an expanding world population-respect no border and threaten the health, prosperity and jobs of all mankind. Our efforts to promote democracy, free trade, and stability in the world will fall short unless people have a livable environment. We have an enormous stake in the management of the world's resources. By increasing demand for timber, natural gas, coal and consumer's goods have destroyed the grounds for living. Greenhouse gas emissions anywhere in the world have threatened coastal communities, and then changed the Earth's climate system. The burning of coal, oil, and other fossil fuels is increasing substantially the concentration of heat-trapping gasses such as carbon dioxide, methane, and nitrous oxide in our air. The earth's temperature and sea levels are rising as a result. Since 1972 there has been a marked growth in the number and scope of environmental treaties. In particular, after the 1992 Rio Conference, international legal instruments became more concentrated on addressing environment within the context of sustainable development and incorporated a number of new concepts and innovative approaches. A preliminary analysis of recent conventions and in particular those associated with the Rio Conference indicates various ideas, concepts and principles which have come to the fore including sustainable development, equity, common concern of humankind, common but differentiated responsibilities and global partnership. However, international trade also has an environmental impact which must be minimized or countered. Positive measures are to be preferred to achieve environmental goals, but where trade provisions are necessary, they should be appropriately used within environmental conventions to facilitate the reduction and limitation of the negative impacts of trade and to enhance the complementarity of the multilateral trade regime with the imperatives of environmental protection, in the interests of environmental protection and sustainable development generally. The international community has to recognize and endorse this need to achieve complementarity between trade and environment issues.

• 한국기후변화학회지
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• 제3권4호
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• pp.271-280
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• 2012

본 연구는 지구온난화와 에너지 위기의 시대에 청정 석탄 이용기술로 부각되고 있는 석탄가스화 복합발전의 경제성을 분석한 것으로 실물옵션을 활용하여 한국형 300 MW급 IGCC 실증플랜트 기술개발사업의 가치를 평가하였다. 실물옵션 가치평가법 중의 하나인 이항옵션 모형을 활용하였고, 연료비 불확실성을 고려하여 평가하였다. 분석 결과, 현금흐름할인법을 이용하여 경제성 평가를 했을 때보다 더 높은 투자가치가 있음을 확인할 수 있었으며, 사업의 가치가 양의 값을 나타내 현재 추진 중인 이 사업이 경제적으로 타당하다고 판단할 수 있었다. 또한, 경제적 타당성 입증을 통해 후속호기 발전에 긍정적 영향을 주며, CCS와 연계 시에는 더 큰 효과가 있을 것으로 기대된다.

• 농업과학연구
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• 제47권4호
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• pp.951-962
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• 2020

One hundred ninety-five countries reached agreement on a new climate treaty in Paris, France to reduce the carbon emissions. South Korea has been selected as a target country for reducing greenhouse gas (GHG) obligations since 2020. In this context, the Korean government developed several GHG emissions reduction programs using forests called the "Forest carbon offset scheme (FCOS)." The forest management method is one of the tools to implement FCOS. Most of the participants registered forest management as the preferred methodology to participate in the FCOS. For a successful implementation of the FCOS, it is necessary to explore the optimal methods by considering the cost-effective aspect of conducting the forest management as a tool to increase carbon absorption. In this context, this study investigated the value optimized FCOS projects based on the forest management methodology in South Korea. Three forest management scenarios, 1) extending the final age of maturity of Pinus densiflora stands (S1), 2) extending the final age of maturity of Quercus acutissima stands (S2), and 3) reforestation with new species (Pinus densiflora to Quercus acutissima) (S3), were examined and evaluated to identify the optimal carbon absorption and value optimized economic perspective. The results of the scenario-based modelling indicated that S3 showed value optimized from an economical perspective, and S2 was the most effective method to absorb carbon among the scenarios. It is anticipated that this paper will contribute to provide valuable information by presenting innovative approaches as a value optimized FCOS implementing tool in a GHG reduction program in South Korea.