• Korea-Australia Rheology Journal
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• v.16 no.2
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• pp.63-73
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• 2004

Flow in a channel with an obstruction at the entry can be reverse, stagnant or forward depending on the position of the obstruction. These flow phenomena have potential applications in the control of energy and various flows in process engineering. Parameters that affect this flow inside and around the test channel are the gap (g) between the obstruction geometry and the test channel, the Reynolds number (Re) and the length (L) of the test channel. The influence of these parameters on the flow behavior was investigated using a flat plate obstruction at the entry of the channel. A low concentration polyacrylamide solution (0.018% by weight) showing a powerlaw fluid behavior was used as the fluid in this investigation. The flow phenomena were investigated by the velocity measurement and the flow visualization and their results were compared with numerical simulation. These results of low concentration polyacrylamide solution are also compared with the results of water published elsewhere (Kabir et al., 2003). The maximum reverse flow inside the test channel observed was 20% - 30% of the outside test channel velocity at a g/w (gap to width) ratio of 1 for Reynolds numbers of 1000 to 3500. The influence of the test channel length (L) and the Reynolds number (Re) on the velocity ratio ($V_i$/$V_o$: inside velocity/outside velocity in the test channel) are also presented and discussed here.

• Korean Institute of Interior Design Journal
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• v.21 no.5
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• pp.145-152
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• 2012

Since 1966 when James Turrell completed his studies on Art, he has been working on the consistent theme of Art. For the 46 years of time, site contexts, scales, methods of light have been changed and they made Turrell's unique 'project series'. Each series has different spatial, visual-perceptual forms and characteristics from other series. The differences were caused by the given situations, but also Turrell intentionally pursued it. However, there are essential theme of art that has not changed in most of Turrell's projects. Target of this paper is to study the unchanged theme as well as the differences. The study starts with three questions: first, what is the geometrical space composition?, second, what is the visual-perceptual phenomenon?, third, what is the hidden consistent theme? This research focuses on three case projects: Wedgework, Space Division Constructions, Skyspaces. These project series are in between the early small object-like installations and the late mega-scale outdoor projects. The study found that geometrical space composition has important role to give visual-perceptual dynamism to the viewer. The phenomenological perception is connected to the questions of relationship between human and space, ultimately human and the world. Although the Merleau-Ponty's philosophy has been related to the work of Turrell in various previous studies, Cartesian 3-dimensional geometry has also crucial role to experiment a viewer's perceptual boundaries. Image of infinity is another aspect of three cases, especially Space Division Constructions and Skyspaces. Through these structure, Turrell's work lead to an ultimate question of meaning for human existence in infinite space. It is hoped that this paper is helpful for Architecture and Interior design field in which light and space are essential.

• The Journal of the Convergence on Culture Technology
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• v.5 no.1
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• pp.275-280
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• 2019

Roger Deakens is one of the best director of photography in the world. He has been worked with Joel Coen & Ethan Coen since (1991). He was nominated for Academy award 13 times. At last, he won the 2018 Academy Award for Best Pictures of the Year. This article aim to look at his style of photography, which he has consistently pursued, and how he controls and implements light. Focusing on The Assassination of Jess James by the coward Robert Ford>,, .

• Journal of English Language & Literature
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• v.64 no.3
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• pp.403-414
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• 2018

This paper suggests a different reading of James Joyce's "Araby" by offering the video game as a lens through which we can reimagine the story. Understanding the unnamed boy's journey to the Araby bazaar as a fetch quest, this paper focuses on the boy's failure to complete this quest. As soon as the boy promises Mangan's sister something from Araby, his fetch quest begins. In order to complete the quest, the boy must successfully perform three sub-quests: get money from his uncle as early as he can, get on the train for the Araby bazaar on time, and pass through the sixpenny entrance at the bazaar. However, because his uncle comes home late, the boy fails to get the money early, and that sets off the subsequent failures. The boy then takes the train late and arrives at the bazaar so late that he feels he must go through any entrance. So he walks through the adult entrance by mistake. As a result, he does not have enough money to buy a gift, failing the larger quest. But, regardless of this failure, the boy can try these quests as many as he wants until he finally succeeds in completing them. But no matter how the boy tries to accomplish these subquests, he is doomed to fail them because he cannot make his uncle come home early. The more he tries his quest, the more bitterly he realizes that he will ultimately fail. In this respect, the boy's "anguish and anger" should be understood as his epiphany: the re-playability of the game is possible, but all the replays lead to the same failure: losing the game. In this regard, reading Joyce's "Araby" is much like playing a video game.

• Journal of the Korean Mathematical Society
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• v.37 no.5
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• pp.707-720
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• 2000

Conley index is used study bifurcation from equilibria of full bounded solutions to parameter dependent families of ordinary differential equations of the form {{{{ {dx} over {dt} }}}} =$\varepsilon$F(x, t, $\mu$). It is assumed that F(x, t,$\mu$) is uniformly almost periodic in t.

• Nuclear industry
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• v.37 no.7
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• pp.19-20
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• 2017

국제 NGO 단체인 '인류를 위한 에너지'(Energy for Humanity)는 프랑스 마크롱 대통령에게 보내는 공개서한을 통해 탈원전 정책이 추진된다면 전력요금이 상승하고 전력 수출 산업이 쇠퇴할 것이며 원전 수출 산업이 붕괴할 것이라고 지적했다. 공개서한에는 저명한 기후학자인 James Hansen과 Kerry Emanuel, 5차 기후변화협약보고서 수석 저자인 Francois-Marie Breon 등을 필두로 한 45인의 학자, 기고가, 환경 운동가 등의 서명이 포함되었다.

• 축산식품과학과 산업
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• v.9 no.1
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• pp.20-34
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• 2020

• 한국생물공학회:학술대회논문집
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• 2003.10a
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• pp.138-140
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• 2003

• Nuclear industry
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• v.36 no.1
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• pp.75-76
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• 2016

일본은 사용후연료의 재처리 정책을 진행하고 있으나 고속증식로 계획이 지연됨에 따라 그 처리의 목표가 확실하지 못하다. MOX(Mixed-Oxide Fuel : 혼합 산화물 연료)에 의한 처리가 계획되어 있으나 상당히 어려운 상황이다. 또 2018년에 미 일 원자력협력협정의 갱신이 예정되어 있는데 이 플루토늄의 취급이 문제가 될 예정이다. 미국은 핵무기의 원료나 테러에 사용할지도 모르는 플루토늄의 확산을 경계하고 있기 때문이다.

• 대한족부족관절학회:학술대회논문집
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• 2008.11a
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• pp.17-18
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• 2008