• The Science & Technology
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• v.34 no.9 s.388
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• pp.40-42
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• 2001

• Proceedings of the KIPE Conference
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• 2016.11a
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• pp.196-197
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• 2016

신재생 에너지와 배터리를 이용하여 소규모로 계통을 구축하여 부하에 전기를 공급하는 시스템을 Microgrid라 한다. 태양광 모듈과 배터리의 성능 향상 및 가격 경쟁력 강화로 인하여, Microgrid는 오지에 전기를 공급하거나 기존 디젤 발전시설을 대체하거나 운영 비용을 감소하는 용도로 각광 받고 있다. 본 논문에서는 디젤 발전기와 강에서 유체동력 발전기로 전기를 공급하는 시스템에 태양광과 배터리를 설치하여 기존 발전 비용을 최소화 하면서 최단 시간내에 투자 비용을 회수할 수 있는 솔루션을 제안한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.5
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• pp.137-145
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• 2016

We are accustomed to using the word 'beautiful' when we see something, but we don't use the word 'sublime' very often. In fact, these two words have totally different meanings and we can say 'sublime' only for special objects. The notions and objects of sublime have been studied by numerous philosophers ranging from Longinus to Burke and Kant. According to their studies, we can feel sublimity from objects which give us fear, because the sublime is inherent in fear. Therefore, in this study, we considered the sublime in the gothic novel, A Rose for Emily, in which we can find solemn sublimity in Emily's iron gray hair, her black suit, and a red rose which stands for blood. In addition, we can feel sublimity in the image of Emily who is waiting for Homer and the image of Homer's dead body. These kinds of images instill us with fear, but also show us tragic sublimity. The sublime exists in all kinds of literature and, therefore, more studies and analyses of the sublime in literature will likely be conducted.

• Korean System Dynamics Review
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• v.17 no.1
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• pp.25-40
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• 2016

This research aims to identify important variables and their effects on diabetes prevention or progression from prediabetes to diabetic complication using system thinking. Based on the existing studies, we have constructed a causal loop diagram explaining dynamics of diabetes and have found 7 important reinforcing loops and 3 balancing loops in the causal loop diagram. The CLD displays an effect of increasing prediabetes early detection and awareness on diabetes prevention. The findings indicate that the projects in Korea for reducing incidence of diabetes and potential risk of complication have focused on variables which are related only on diabetes even though prediabetes has been a critical point on diabetes prevention and management. Thus, it also concludes that the effect of projects focusing only on diabetes have faced limitation to manage diabetes accordingly.

• Journal of English Language & Literature
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• v.54 no.4
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• pp.461-482
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• 2008

The science fiction was established as a typical genre of the American popular culture by the monumental releases of two series: Star Wars and Star Trek. Based on the popular science discourse, these two series have functioned as an ideological apparatus for re-appropriating Frontierism which reflects the essential values of American myth. Arguably, the SF genre owes its success mainly to the increasing popularity of science during the 1960s and 1970s, which was well represented in the space project of NASA. This power of popular science, however, tended to weaken in the 1990s as the public interest in NASA's project gradually decreased. "Deep Space Homer," an episode of The Simpson's fifth season, reflects the changing attitude of the American audience toward the new American hero created in the SF series of popular science in the previous popular culture.

• 한국신재생에너지학회:학술대회논문집
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• 2011.05a
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• pp.75.2-75.2
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• 2011

국내 유인도서의 상당수는 전력의 대부분을 디젤발전으로 생산한다. 향후 발전설비의 교체 혹은 증설이 있을 경우 신재생에너지원 설비의 보급 여지가 있다. 이에 본 연구는 울릉도에 화력발전 설비만을 증설했을 경우와 이를 신재생에너지복합시스템 설비로 대체했을 때의 경제적 타당성을 비교분석한다. 우리는 복합발전 시스템을 풍력터빈, PV, 소수력발전 등의 신재생에너지 설비, Batteries, Converter와 같은 보조전원, 저장 및 back up을 위한 flywheel과 Diesel generator등으로 구성했다. 분석에 사용한 HOMER(Hybrid Optimization for Energy Renewable)는 신재생에너지복합 발전시스템 분석에 사용되며 결과를 NPC(Net Present Cost)의 오름차순으로 제시하여 발전설비구성의 조합들 중 최적의 시나리오를 보여준다. 분석결과 울릉도의 경우 신재생에너지복합 발전의 보급이 잠재적으로 가능할 것으로 보인다. 또한 계통운영의 기술적인 측면을 감안할 경우 정밀한 분석이 가능할 것이다. 따라서 본 연구는 계통운영과 경제성분석 연구의 연계를 위한 사전연구로써 그 의미를 갖는다.