• 제목/요약/키워드: unreal

검색결과 121건 처리시간 0.024초

L-CAA : 행위 기반 강화학습 에이전트 구조 (L-CAA : An Architecture for Behavior-Based Reinforcement Learning)

  • 황종근;김인철
    • 지능정보연구
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    • 제14권3호
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    • pp.59-76
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    • 2008
  • 본 논문에서는 실시간 동적 환경에 효과적인 L-CAA 에이전트 구조를 제안한다. L-CAA 에이전트 구조는 변화하는 환경에 대한 적응성을 높이기 위해, 선행 연구를 통해 개발된 행위기반 에이전트 구조인 CAA에 강화학습 기능을 추가하여 확장한 것이다. 안정적인 성능을 위해 L-CAA 구조에서는 행위 선택과 실행을 학습에 전적으로 의존하지 않고 학습을 보조적으로 이용한다. L-CAA에서 행위 선택 메커니즘은 크게 두 단계로 나뉜다. 첫 번째 단계에서는 사용자가 미리 정의한 각 행위의 적용 가능 조건과 효용성을 검사함으로써 행위 라이브러리로부터 실행할 행위들을 추출한다. 하지만 첫 번째 단계에서 다수의 행위가 추출되면, 두 번째 단계에서는 강화학습의 도움을 받아 이들 중에서 실행 할 하나의 행위를 선택한다. 즉, 강화학습을 통해 갱신된 각 행위들의 Q 함수값을 서로 비교함으로써, 가장 큰 기대 보상값을 가진 행위를 선택하여 실행한다. 또한 L-CAA에서는 실행 중인 행위의 유지 가능 조건을 지속적으로 검사하여 환경의 동적 변화로 인해 일부 조건이 만족되지 않는 경우가 발생하면 현재 행위의 실행을 즉시 종료할 수 있다. 그 뿐 아니라, L-CAA는 행위 실행 중에도 효용성이 더 높은 다른 행위가 발생하면 현재의 행위를 일시 정지하였다가 복귀하는 기능도 제공한다. 본 논문에서는 L-CAA 구조의 효과를 분석하기 위해, 대표적인 동적 가상환경인 Unreal Tournament 게임에서 자율적으로 동작하는 L-CAA 기반의 에이전트를 구현하고, 이를 이용한 성능 실험을 전개해본다.

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이덕무(李德懋) 『청장관전서(靑莊館全書)』 소재 인물 일화(逸話) 연구 (A Study of figure's episodes of in a Collection of Lee, Duck Moo's Works(ChungJangKwan Junseo))

  • 김균태
    • 고전문학과교육
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    • 제15호
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    • pp.389-419
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    • 2008
  • I already wrote a thesis about A Study of Ideologies and Stylistic Features of the Oral Narratives in a Collection of Lee, Duck Moo's Works(ChungJangKwanJunseo)" in The Classical Literature and Education Vol.11, (2006). At that time I held over a study of figure's episodes. So this essay is a series of the thesis. In this essay, I described his critical ideas about the figure's episodes of other people. I classified as the gentry's episodes and the common's episodes, and ones more classified these as the Confucian's moral episodes and the oddity's strange episodes. And I studied the narrative principles and features of narrative structure. He asked for a reasonal thinking attitude in the figure's episodes of other people. In his the gentry's episodes he indicated as a important value the constant attitude of propriety and dignity. The other hand, in his the common's episodes he thought importantly a practical act of the Confucian's moral. He showed man's equality and criticized the anti-practical attitude of the gentry group. In the oddity's strange episodes were focused on the super ability of figures in the both of groups. And then even though there are unreal or unreasonable contents in the oddity's strange episodes, he did not criticize. His such attitude was came out to take interest in unreal story like the Paesasopeum(稗史小品). The the narrative principles of his episodes are two types, one is a summary or a report type, the other is a descriptive of events type. the former was explained by narrater, the latter was described as the indirect or direct narration of the characters. In the structure of narrative in case a summary type were enumerated with the episodes, but in case a report or descriptive type of events were contrasted with characters. A story-telling way of figure's episodes borrowed from 'Jeon(傳)' or 'Yadam(野談)' genre. And a point of view in case a summary or a report type was consisted with a center of narrater, in case a descriptive of events type was consisted with a center of witness.

EBS AR 실감영상 제작 시스템 도입이 콘텐츠에 끼친 영향에 대한 연구 (A study on the effect of introducing EBS AR production system on content)

  • 김호식;권순철;이승현
    • 문화기술의 융합
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    • 제7권4호
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    • pp.711-719
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    • 2021
  • 2000년대 초부터 전통적인 가상 스튜디오 제작 시스템을 활용하여 수많은 교육 콘텐츠를 제작해 온 EBS는 약 20년만인 2020년 10월에 AR 영상 제작 시스템을 도입했다. 카메라의 움직임과 렌즈 정보를 트래킹하여 실시간으로 그래픽 요소와 실사를 합성한다는 기본 개념은 유사하지만, 새로 도입된 AR 영상 제작 시스템은 이전보다 개선된 몇 가지 최신 기술이 적용되었다. 좀 더 자유로운 카메라의 움직임을 가능하게 해주고 안정적으로 위치 트래킹을 할 수 있는 마커 추적 방식의 트래킹 기술이 적용되었고, 운영 소프트웨어는 컴퓨터 게임 제작에 활용되는 대표적인 그래픽 엔진 중 하나인 언리얼 엔진이 적용되어 시스템의 렌더링 부담은 줄어들면서 고품질의 실시간 그래픽 효과가 가능하게 되었다. 해당 시스템은 생방송 전용 스튜디오에서 부감 촬영을 담당하는 크레인 카메라에 설치되어 어린이 대상 생방송 프로그램에 주로 활용되고 있으며, 2D 그래픽으로 표현되던 코너 소개나 퀴즈 이벤트 등의 영상 중 일부가 3D AR 영상으로 전환되었다. 본 논문에서는 AR 영상 제작 시스템의 도입과 적용이 EBS의 콘텐츠 제작 측면에 있어서 어떤 변화를 가져왔는지와 향후 발전 방향과 가능성에 대해 알아본다.

현대 패션일러스트레이션의 다중공간 표현에 관한 연구 (A Study on the Multi-space Method in Fashion Illustration)

  • 이지현
    • 한국의류학회지
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    • 제33권4호
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    • pp.644-654
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    • 2009
  • The purpose of this study is to analyze the characteristics of current fashion illustrations within the framework of Multi-space method. Multi-space means being piled up one moment & space on others, and being amassed in a scene. This method is related with Dadaism, Surrealism and Postmodernism, and also influences on the current fashion illustration. In this study, the types of Multi-space method could be classified into 4 types; Repetitive Time Mixture in Multi-space, Juxtaposed Time Mixture in Multi-space, Reiterated Space Mixture in Multi-space, Projected Space Mixture in Multi-space. The characteristics of Multi-space were analyzed and the results are as followed. The distinctive methods for Time Mixture in Multi-space are repetition and juxtaposition in a scene. Time Mixture in Multi-space can make the nonlinear narration and unreal illusory space in fashion illustrations more effectively. Reiterated Space Mixture in Multi-space can be related with the heterogeneous, surrealistic illusions in current fashion illustrations. Projected Space Mixture in Multi-space can be characterized into inter-penetration. It can derive spectators to mix the projected & transparent images in a scene for their own imaginary stories. The final imagination can be made differently according to the personal experiences of spectators.

당대(唐代) 사마승정(司馬承禎)의 "천은자(天隱子)"에 대한 연구(硏究) (A Study on Chuneunja(天隱子) written by Samaseungjung(司馬承禎))

  • 이남구;최한백;송민아;김정완
    • 대한한의학원전학회지
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    • 제23권5호
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    • pp.1-9
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    • 2010
  • Chuneunja(天隱子) was publication that described the life nurturing(養生) of Taoism, consisted of 8 chapters. It was comparative primary writing and contained important contents in related to the life nurturing of Taoism. It belonged to the life nurturing of Taoism that influenced by Confucianism and Buddhism. It emphasized on the practical and rational thought that mastered morality by performing gradually. It showed the concrete asceticism method like to the basic regimen training of Taoism, for example mind control(調心), flesh control(調身), breath control(調息), conduction exercise(導引), raping teeth (叩齒法) and swallowing saliva(嚥津法). Oriental traditional regimen focused on realizing balanced human character by practicing human mind and body. It may show the direction to modern person that are troubled with harmful effect of modern civilization. If we throw away superstitious and unreal part in the traditional regimen and apply regimen in one's life, we may consider that regimen contribute to human health. Therefore, we require clear understanding for the classic data inherited from predecessors.

의상디자인 발상 및 전개 방법에 대한 연구 (A Study on the Methodology for Fashion Design through the Source of Inspiration and its Application)

  • 금기숙
    • 복식
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    • 제29권
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    • pp.53-70
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    • 1996
  • The inspiration and its application in fashion design is considered as one of the important factors in boosting the fashion arena. Many inspirations are adapted in fashion de-sign and they make the fashion design unique and characteristic. In this study many fashion designs are analyzed to find what kind of inspirations were adapted and utilized for the fashion design in reality. The nature historic costumes ethcin costumes arts sciences literature music sports were revealed as the sources of fashion inspiration.l The concerns on the environments movies and dramas could provide inspirations in fashion as well. Several contents or steps were studied to provide the one of the example of appli-cations as follows: 1. The works of Marc Chagall were analized to figure out and several plastic characteristics from his works were revealed such as fantastic strong colors unreal animal pattern or their details his wife and friends various divisions of the surface and so on. These attributes had been favored in depiction of his works to ex-press his home town or nostalgia. 2. '90s fashion designs inspired by the works of Chagall were analized to find out the meth-odology or the process of designs. The same Chagall colors were used in design and similar pattern were expressed through beaded work or printing jobs. The surface designs such as printing were the most prefered method in adapting the inspirations. 3. The plastic characteristics of the work of Chagall were attempted in clothing design and construction. The color combination patterns which remind the animals the surface divisions were used in design ot practive the methodologies.

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실현 가능한 소프트웨어 개발기간 추정 (An Estimating for Practical Software Development Duration)

  • 이상운;최명복
    • 한국인터넷방송통신학회논문지
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    • 제12권6호
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    • pp.155-164
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    • 2012
  • 개발인력을 투입하는 양에 상관없이 소프트웨어를 개발하는데 소요되는 일정 단축에는 한계가 있다. 그러나 획득되는 실제 개발된 소프트웨어 데이터들을 분석하여 보면 불가능한 단기간의 개발기간 또는 비현실적으로 장기간 개발기간 데이터들까지 포함하고 있다. 기존에 제안된 개발기간 추정 모델들은 이러한 제약사항을 고려하지 않고 실제 개발된 소프트웨어 모두를 대상으로 개발일정을 유도하고 있다. 본 논문은 개발 최소기간과 최적 개발기간(정상적인 개발기간)에 대한 기준을 제시한다. 제시된 기준은 실제 수행된 프로젝트를 대상으로 5개의 기준 중에서 가장 성능이 좋은 개발기간 추정 모델을 얻은 기준을 판단하였다. 또한, 이에 기반하여 개발기간을 추정하는 모델을 제시한다.

침식, 팽창기법을 이용한 전차선 검측 시스템의 설계 (Dilation and Erosion Technique using a Inspection of the Catenary System Design)

  • 김우생;정민영;김지윤
    • 한국철도학회논문집
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    • 제9권6호
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    • pp.701-704
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    • 2006
  • The catenaries must guarantee the constant electricity to the trains, so that the safety and the estimate of fatigue degree and the inspection of abrasion degree should be done rapidly. This thesis proposes the system that can manage the performance/failure of the catenaries using the image process as the solution for the weak points of the existing inspection such as the decrease of immediateness and the lack of constancy in the human resources. This study simulates the ALD using VHSV (Virture HSV) which is the unreal HSV images, not getting the real HSV in ages to the image processing technique that repeats the erosion and the expansion of the images as the methods that can monitor the slight/critical defects of the catenaries as dealing with the result of the catenaries inspection images. The final ALD (Abnormal Line Detection) system is designed based on this simulation. I have demonstrated it with the VHSV (Virture HSV) virtual images as the materials of the test and inspected it through testing the defects of the catenaries for the thesis.

천이영역의 희박기체 압축성 경계층 해석 (Analysis of rarefied compressible boundary layers in transition regime)

  • 최서원
    • 대한기계학회논문집B
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    • 제21권4호
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    • pp.509-517
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    • 1997
  • Results of flat plate compressible boundary layer calculation, based on discrete formulation of DSMC method, are presented in low Mach number and low Knudsen number range. The free stream is a uniform flow of pure nitrogen at various Mach numbers in low pressures (i.e. rarefied gas). Complete thermal accommodation and diffuse molecular reflections are used as the wall boundary condition, replacing unreal no-slip condition used in continuum calculations. In the discrete formulation of DSMC method, there is no need to use ad hoc assumptions on transport properties like viscosity and thermal conductivity, instead viscosity is calculated from values of other field variables (velocity and shear stress). Also the results are compared with existing self-similar continuum solutions. In all Mach number cases computed, velocity slip is most pronounced in regions near the leading edge where continuum formulation renders the solution singular. As the boundary layer develops further downstream, velocity slips asymptote to values that are between 10 to 20% of the magnitude of free stream velocity. When the free stream number density is reduced, so the gas more rarefied, the velocity slip increases as expected.

패션 일러스트레이션의 은유적 표현방법 (The Expression of Metaphor in Fashion Illustration)

  • 최정화;유영선
    • 한국의류학회지
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    • 제28권5호
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    • pp.626-636
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    • 2004
  • The purpose of this study was to show a theoretical system of expressional area, the characteristics and the effects which is applied to fashion illustration by metaphor theory. The theoretical system of expressional area was analyzed by category analysis and 150 fashion illustrations from 1900 to 1999 were analyzed by contents analysis. The results of this study were as follows: Metaphor in fashion illustration was categorized to replacement, parody, heterogeneous combination, surrealism, magnification and reduction of size, optical illusion, juxtaposition and distortion of form. In detail, First, replacement was showed omission of form, non-object color, texture. Second, parody was showed using the part in artistic work, differentiation of original work. Third, heterogeneous combination was showed unreal body combining between animal and plant. Fourth, surrealism was showed creation of object which is impossible to present. Fifth, magnification and reduction of size was showed bizarre magnification of part of body, size of clothing. Sixth, optical illusion was showed ambiguity of object because of creation of new form. Seventh, juxtaposition was showed the parallel of contradicting idea and change of meaning between heterogeneous objects. Eighth, the distortion of form was showed grotesque distortion of part of body and disgusting object.