• 제목/요약/키워드: selection of site

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블랙 숄즈 모델을 이용한 잠재적 풍력발전 위치의 경제적 가치분석 (The Economic Value Analysis of the Potential Wind Farm Site Using the Black-Scholes Model)

  • 심재훈
    • 산업경영시스템학회지
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    • 제45권4호
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    • pp.21-30
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    • 2022
  • To mitigate the environmental impacts of the energy sector, the government of South Korea has made a continuous effort to facilitate the development and commercialization of renewable energy. As a result, the efficiency of renewable energy plants is not a consideration in the potential site selection process. To contribute to the overall sustainability of this increasingly important sector, this study utilizes the Black-Scholes model to evaluate the economic value of potential sites for off-site wind farms, while analyzing the environmental mitigation of these potential sites in terms of carbon emission reduction. In order to incorporate the importance of flexibility and uncertainty factors in the evaluation process, this study has developed a site evaluation model focused on system dynamics and real option approaches that compares the expected revenue and expected cost during the life cycle of off-site wind farm sites. Using sensitivity analysis, this study further investigates two uncertainty factors (namely, investment cost and wind energy production) on the economic value and carbon emission reduction of potential wind farm locations.

SV 40 DNA를 이용한 포유동물의 유전자 운반체 개발 (Construction of an expression vector with SV40 DNA in a mammalian cell)

  • 정민혜;김상해;전희숙;노현모
    • 미생물학회지
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    • 제25권3호
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    • pp.165-172
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    • 1987
  • An expression vector in a mammalian cell was constructed using the origin of replication (OR) and the promoters of SV40. The plasmid pSVOE was constructed by inserting SV40 DNA fragment (1, 118bp) containing SV40 OR and promoters into pBR322-1, and then a multiple cloning sequence was inserted at the immediate downstream of the late promoter of SV40 in the pSVOE vector. The plasmid was named pSVML. As a selection marker, thymidine kinase gene of herpes simplex virus with its promoter was inserted into EcoRI site of pSVML and the recombinant was named pSVML-TKp. To test the expression capacity of foreigen gene inserted at the multiple cloning site of pSVML, the thymidine kinase gene without its own promoter was inserted at the BamHI site of pSVML. The recombinant was named pSVML-TK. These plasmids, pSVML-TKp and pSVML-TK, were transfected into COS cells with calcium phosphate precipitation method. The thymidine kinase activity was significantly increased in both transfected cells.

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지하수 오염방지를 위한 산업폐기물 관리평가 모델(IWEM)의 국내 적용성 분석 (Applicability of Industrial Waste Management Evaluation Model (IWEM) in Korea)

  • 박동원;우남칠;정다위
    • 한국지하수토양환경학회지:지하수토양환경
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    • 제17권1호
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    • pp.1-7
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    • 2012
  • Selection of appropriate liner type would be the most important factor to prevent groundwater contamination by leachate from waste management site. This report introduces the IWEM (Industrial Waste Management Evaluation Model) developed by US EPA to evaluate the potential pollution of groundwater under the waste management unit and to suggest an appropriate type of liner, and provides with the results of IWEM application to a coal-ash landfill site in Korea as a case study. IWEM uses a standard method using a database, a decision-making process based on site characteristics, and the user-friendly input-and-output system. Authors evaluate this model to be applicable in Korea provided that the database is replaced into local data.

중요도-성취도 분석에 의한 전시컨벤션 개최지 평가 (Exhibition and Convention Destination Site Evaluation Using Importance-Performance Analysis)

  • 김시중;박창규
    • 한국경제지리학회지
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    • 제9권3호
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    • pp.358-378
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    • 2006
  • 본 연구는 전시컨벤션 기획가를 대상으로 서울에 대한 전시컨벤션 개최지로서의 7개 요인 및 42개 선택속성을 중요도-성취도 분석을 통하여 평가함에 목적이 있었으며 분석 결과는 다음과 같다. 첫째, 전시컨벤션 개최지의 42개 선택속성에 대한 중요도-성취도 분석 결과, 13개의 속성이 I사분면('지속적 노력필요'), 4개의 속성이 II사분면('과잉노력 지양'), 5개의 속성이 III사분면('우선시정 필요')에 그리고 20개의 속성이 IV사분면('저우선 순위')에 위치하고 있는 것으로 평가되었다. 둘째, 전시컨벤션 개최지의 7개 요인에 대한 중요도-성취도 분석 결과, 중요도와 성취도가 높은 I사분면에 위치하는 요인은 "전시컨벤션센터 시설", "전시컨벤션센터 이용비용" 및 "전시컨벤션 개최지 숙박공간" 요인으로 나타났다. 중요도는 높으나 성취도는 낮은 III사분면에 위치하는 요인은 "전시컨벤션 개최지 지역공간"으로 평가되고 있다. 한편 중요도와 성취도가 낮은 IV사분면에는 "전시컨벤션센터 운영", "전시컨벤션 개최지 관광공간" 및 "전시컨벤션 개최지 여가활동공간" 요인이 위치하는 것으로 나타났다. 셋째, 서울의 전시컨벤션 개최지로서의 중요도-성취도에 대한 평균값의 차이는 2개의 속성을 제외하고는 40개의 속성이 양의 값(+)을 나타내어 속성의 중요도에 비교하여 성취도가 낮은 것으로 평가되었다.

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A Modified-AHP Method of Productivity Analysis for Deployment of Innovative Construction Tools on Construction Site

  • Kwon, Soonwook;Lee, Gaeyoung;Ahn, Dooyong;Park, Hee-Sung
    • Journal of Construction Engineering and Project Management
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    • 제4권1호
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    • pp.45-50
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    • 2014
  • Productivity analysis is the most important and significant method for evaluating management and engineering performance during whole project stage. However, it is very difficult in developing qualitative index to construction industry comparing to other industries. Therefore, analytical hierarchy process (AHP) is one of the methods for overcoming these limitations by checking consistency index using duality comparison. In this study, it is scraped up an application plan and selection for innovative tools by analyzing survey results on tool users and site managers with respect to using Modified-AHP performance measurement method.

Cre-Lox: A Tool for Removal of Marker Genes to Make GM Foods Safe

  • Zargar, Sajad M.;Mushtaq, Roohi;Joshi, Manisha;Prasad, D. Theertha;Bhat, Nazir Ahmad;Agrawal, Ganesh Kumar;Rakwal, Randeep
    • Journal of Crop Science and Biotechnology
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    • 제10권2호
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    • pp.73-78
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    • 2007
  • The green revolution has significantly helped in increasing the food production. So far, various breeding methods have been exploited, besides them recombination DNA technology provides another approach for increasing the food production. By means of this technology the losses in food production incurred by various biotic and abiotic stresses can be effectively controlled. In most of the transgenic studies scientists have used antibiotic resistant genes as markers for easy selection of transformants but there are risks involved in use of GM foods. To make such foods safer and environment friendly we have discussed a novel strategy i.e. Cre-lox which involves site specific recombination. By means of Cre-lox the marker genes can be specifically removed once the selection of transformants is over. In addition, this strategy can be used to module the hybrid chromosomes, avoid gene silencing and incorporate single copy of a transgene for its higher expression.

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개인보호구(안전모, 안전벨트) 성능 유지를 위한 관리방안에 관한 연구 (A Study on Management Measures to Maintain the Performance of Personal Protective Equipment(Hard Hat, Safety Belt))

  • 김자연
    • 대한안전경영과학회지
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    • 제24권1호
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    • pp.11-19
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    • 2022
  • In order to find out the management and sanitation status of protective gear provided at the construction site, a case study and survey were conducted by visiting the site. As a result of the case study, inspection and management, disinfection, and storage of protective equipment were insufficient in both workplaces with less than 50 employees and workplaces with more than 100 employees. As a result of the survey, workers(66.2%), said they did not know how to identify hard hats(67.6.%), how to identify bad hard hats(60.8%), and how to identify bad safety belts (73.0%), even though workers(66.2%) were educated on protective gear, and those in charge of protective gear Non-specified(56.8%), regular inspection of the provided protective equipment was not performed(82.4%), and disinfection was not performed(90.5%). Therefore, as a management plan to maintain the performance of personal protective equipment, educational aspects, regular training on protective equipment, training on how to identify defective protective equipment, management of recording papers, technical aspects, strengthening of standards for placement of dedicated safety managers in small workplaces, participation of workers' representatives when selecting protective equipment, and selection of protective equipment for workers Providing opportunities, administrative aspects of protective equipment regulation and management, introduction of sanitary and cleanliness system, and selection of personnel in charge of protective equipment management were suggested.

가스하이드레이트 시험생산 기술개발 동향 (An Investigation on the Technical Progress of Test Production for Gas Hydrate Development)

  • 박승수;주우성;안승희;이정환
    • 한국신재생에너지학회:학술대회논문집
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    • 한국신재생에너지학회 2009년도 춘계학술대회 논문집
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    • pp.705-708
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    • 2009
  • For the Gas hydrate Research and Development in Korea, the prospect area I & II was surveyed and drilled during the first phase. At the result, we succeeded to discovering gas hydrate real sample at BSR reflection and vent structure. This expedition processing contributes to developing the offshore seismic survey technologies and data processing of Korea. But Korean gas hydrate test production research, in spite of activating test production at other countries, is such a limitation about technician, GH production technologies and E&P processing. First of all, there is no exist in Korea to application site for the their production research results. In this paper, we have studied the gas hydrate reservoir selection technics of the DOE & BPXA for the ANS test production. And this result will helpful to preparation of gas hydrate test production in Korea.

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