• Journal of KIISE:Computer Systems and Theory
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• v.26 no.2
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• pp.189-197
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• 1999

배리어 프리미티브는 병렬 프로그램을 수행할 때 계산에 참여한 프로세서들 사이에 동기화를 위하여 사용된다. 그러나 배리어에 일찍 도착한 프로세서들은 나머지 프로세서들이 배리어에 도착할 때 까지 배리어에서 기다리게 되므로 프로세서들의 활용율이 떨어진다. 본 논문에서는 배리어 대기시간의 원인들을 찾기 위하여 병렬 프로그램들을 다양한 그레인 크기들로 수행하였다. 모든 프로세서들이 동일한 개수의 그레인들을 수행함에도 불구하고 그레인 크기에 따라 변화되는 명령어들과 캐쉬 실패들은 배리어 대기 시간에 영향을 미치고 있음을 시험한다. 또한 배리어에서의 맹목적 대기시간을 감소시키기 위하여 동기화 기능을 두 단계로 나누어 수행하는 두 단계 배리어를 제안한다. 모의 실험 결과는 병렬 프로그램의 그레인 크기는 배리어 대기시간에 영향을 미치고 있음을 보여주며 또한 제안된 두단계 배리어가 기존의 배리어 프리미티브보다 배리어에서의 대기시간을 줄여주고 있음을 보여준다.

• Cross-Cultural Studies
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• v.40
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• pp.61-90
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• 2015

The imagery of Ophelia appeared in Russian literature in the middle of the $19^{th}$ century. In contrast with Hamlet, whose name had been always in the center of the most intense debates through centuries, Ophelia had been understood relatively monotonously and simply associated with the images of a chaste maiden, a tragic heroine and a devoted lover. Only after the feminist literary criticism shed new light on the complicated inner world of the young girl, the imagery of Ophelia radically changed, and now it is not difficult to encounter various Ophelias on the contemporary stages and culture. In this paper we study the remarkable changes of the imagery of Ophelia in Russian modernism poetry, analysing A. Blok, A, Akhmatova, M. Tsvetaeva's Ophelia poems. Ophelia in Russian modernism, on the one hand, succeeding to the traditional view on Ophelia in $19^{th}$ century, assumes interesting new aspects, sometimes preempting feminist point of view.

• Proceeding of EDISON Challenge
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• 2016.11a
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• pp.81-84
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• 2016

본 연구에서는 국내에서 개발 중인 범용 수치해석 모델 에디슨을 활용하여 자동차 후미에 장착되는 리어 디퓨저에 대한 특성을 파악하기 위하여 수행되었다. 변수로는 자동차의 속도와 리어 디퓨저의 각도이며 자동차의 속도 및 리어 디퓨저의 각도 변화에 따른 자동차의 공력특성을 파악하고 이를 통해 리어 디퓨저 형상 설계 인자에 대한 자료를 확보하고자하였다. 그 결과 일정 각도 범위 내에서 최적의 자동차 공력특성이 보임을 확인하였다.

• The Journal of the Korea Contents Association
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• v.15 no.7
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• pp.544-554
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• 2015

This study is effect of Hotelier's job environment on emotional exhaustion, job satisfaction and turnover intention. For data analyses, a total of 250 questionnaire were distributed Among them, 202 survey data were used for analyses. This study obtained following results. First, it found that fee, colleagues and atmosphere had the negative effects on the emotional exhaustion. Second, promotion, fee, colleagues and atmosphere had the positive effects on the job satisfaction. Third, fee, colleagues and atmosphere had the negative effects on the turnover intention. Fourth, emotional exhaustion had the negative effects on the job satisfaction. Fifth, Hotelier's emotional exhaustion had the positive effects on the turnover intention. Finally, Hotelier's job satisfaction had the negative effects on the turnover intention.

• Proceedings of the Korea Information Processing Society Conference
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• 2022.11a
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• pp.791-793
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• 2022

1인 가구의 증가로 셀프 인테리어의 관심이 높아지자 온라인 구매로 인테리어를 하는 경우가 많다. 그러나 가구를 주문해도 비율적이나 시각적으로 달라 환불하는 경우가 많다. 본 연구에서는 Unity의 AR, VR기술을 활용하여 가구 배치, 거리 측정, 벽지 변환 등의 기능으로 손쉽게 인테리어를 할 수 있고, 자신의 인테리어를 다른 사용자와 공유해 평가 및 비교를 할 수 있는 플랫폼 앱을 구현하여, 인테리어를 손쉽게 할 수 있는 서비스를 제공하고자 한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.1
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• pp.78-85
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• 2015

Fools usually make people laugh through their comic appearances and foolish behaviors. A fool in King Lear also gives us pleasure by his unique jokes and humors, however, he is not so foolish. He is very wise and has the intuition to penetrate people's mind and understands the facts. He predicts the future, criticizes the untrueness and heals the wounded mind. He always keeps Lear company and makes him realize his own foolishness. After getting out of his own suffering and fear, Lear experiences his healing process of purification with the help of the fool. In this respect, the fool in King Lear is a wise helper and healer for King Lear.

• Korean Journal of Optics and Photonics
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• v.19 no.2
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• pp.95-102
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• 2008

An advantage of parallax barrier displays is that they can also display 2D and 3D contents and can be automatically switched between the two types. But, as the viewer changes position, different views of the scene will be directed by the barrier to the visual system. Moving horizontally beyond a certain point will produce "image flipping" of the different views of the scene. These limitations make unavoidable the use of another autostereoscopic display solutions like eye tracking or increasing the number of views. In this paper, a method of the moving parallax barrier design is introduced to supplement a disadvantage of the fixed parallax barrier that provides observation at specific locations. For making the moving parallax barrier, the cross connector with 640 lines FPC is designed. A commercially available web camera is utilized to implement eye-tracking system and shows the experimental result.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.12
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• pp.226-231
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• 2016

Binomial trees are used to price barrier options. Since barrier options are path dependent, option values of each node are calculated from binomial trees using backward induction. We use generalized Catalan numbers to determine the number of cases not reaching a barrier. We will generalize Catalan numbers by imposing upper and lower bounds. Reaching a barrier in binomial trees is determined by the difference between the number of up states and down states. If we count the cases that the differences between the up states and down states remain in a specific range, the probability of not reaching a barrier is obtained at a final node of the tree. With probabilities and option values at the final nodes of the tree, option prices are computable by discounting the expected option value at expiry. Without calculating option values in the middle nodes of binomial trees, option prices are computable only with final option values. We can obtain a probability distribution of exercising an option at expiry. Generalized Catalan numbers are expected to be applicable in many other areas.

• Korean Journal of Optics and Photonics
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• v.20 no.2
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• pp.102-109
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• 2009

In this paper, we introduce an eye-tracking 3D display system using variable parallax barrier and DDC communication. A barrier of variable parallax barrier composed of 4 sub-barriers and a commercially available web camera is utilized to implement the eye-tracking system. The coordinates of a viewer is extracted from the web camera transfer to 3D display via DDD/CI communication. The variable barrier attached to the LCD moves electrically according to the right eye position for 3D images. This system is compared experimentally with the commercial parallax barrier methods.

• Journal of Broadcast Engineering
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• v.15 no.4
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• pp.591-599
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• 2010

In this paper, we propose a disparity-adaptive filtering method to reduce view-aliasing and inter-perspective aliasing on auto-multiscopic 3D display. View aliasing by the subsampled multi-view images could happen if the resolution of an auto-multiscopic monitor is lower than that of the original multi-view images. Furthermore, multi-view images on auto-multiscopic monitor usually cause eye strain and fatigue because of inter-perspective aliasing by discontinuity that exists between viewpoints. The greater disparity value becomes, the stronger these types of aliasing could be. Thus, we design a lowpass filter whose cut-off frequency is determined adaptively to the number of intermediate reconstructed views and their disparity's strength. Though experimental results, we show that the proposed filtering algorithm could reduce the aliasing effect very efficiently by using DSCQS (double stimulus continuous quality scale method).