• The Journal of Korean Institute of Communications and Information Sciences
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• v.22 no.7
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• pp.1566-1573
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• 1997

In this paper, we propose a favorite color correction algorithm for color enhancement in color application system which represent preferred colors for viewer's demands. The proposed algorithm corrects skin color which is widely used as a reference color for color control of color application system, blue color which is directly related to tri-stimulus values, and green color which has higher visual sensitivity. In the proposed algorithm, the vaiation range of phase detector output voltage was minimized for the favorite color saturation changes, thus the favorite from the burst signal for the phase detector characteristic, thus the favorite color was easilty detected from the other color without overlapping of correctionranges.

• Proceedings of the KIEE Conference
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• 1994.07a
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• pp.27-29
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• 1994

The application of Computer is utilized as instruction tool. In order to improve the educational qualitative effect of the moter in the electrical engineering part, this paper has described the development of teaching tool for the structure, principle, characteristics and control method of the induction motor by applying the demonstration and simulation type among various computer aided instructions (CAI). The educational technology is applied to the demonstration type using 3 dimensional model in consideration of a visual effect about the structure and principle of the induction motor. Teaching tool is applied to simulation type which presents onrush various results to understand the characteristic and the control method of the induction motor.

• Korean Institute of Interior Design Journal
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• no.39
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• pp.37-44
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• 2003

From long time ago, stairs are performed the central role of vertical circulation system in architectural planning for convenience of human. The purpose of this study is to find the spacial characteristics of stairs in architectural space. Two methods In this study are discussed. First, it is to extract the formal elements in its stairs shape raising an impulse of visual-perceptible recognition. Second, it is to analysis its characteristic through relationship between stairs and spacial elements. In conclusion, the characteristics of stairs in architectural space have as follows 1) spatial connection - to connect between space and other space or masses; 2) spatial separation - to separate between inner space and other space; 3) openness or closeness of space; 4) directed-tention of space.

• Proceedings of the KIPE Conference
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• 2007.07a
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• pp.394-396
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• 2007

In this paper proposed to neural network PI self-tuning direct controller using Error back propagation algorithm. Proposed controller applies to speed controller and current controller. Also, this built up the interface environment to drive it simply and exactly in any kind of reference, environment fluent and parameter transaction of PMSM. Neural network PI self-tuning simulator using Visual C++ and Matlab Simulation is organized to construct this environment, Built up interface has it's own purpose that even the user who don't have the accurate knowledge of Neural network can embody operation characteristic rapidly and easily.

• Proceedings of the Korea Institute of Convergence Signal Processing
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• 2003.06a
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• pp.54-57
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• 2003

본 논문에서는 멀티웨이브릿 변환영역에서 통계적 모델과 지각적 동조특성을 이용한 적응적 디지털 워터마킹 기법을 제안한다. 워터마크는 4레벨로 분해된 멀티웨이브릿 변환영역에서 최저주파 영역과 최고주파 대역들을 제외한 중간 및 고주파 영역에, 인간 시각 시스템(human visual model BWS)을 이용한 JND(just noticeable difference) 특성과 NVF(noise visibility function)를 이용한 통계적 특성을 기반으로 정상상태 가우시안 모델과 비정상상태 가우시안 모델에 따라 지각적 동조 특성을 이용하여 적응적으로 삽입된다. 실험 결과 제안한 방법에서 에지나 텍스쳐 영역에 더 강하게 삽입할 수 있었고, 평탄영역에서 보다 적응적으로 은닉할 수 있었으며 정상상태 가우시안 모델에서 지각적 동조특성을 이용한 방법이 더 우수한 비가시성과 강인성을 확인하였다.

• Journal of the Korean Graphic Arts Communication Society
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• v.18 no.2
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• pp.133-141
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• 2000

Enhanced the value of badge good with the gold plating of emblem, sports pictogram, mascot in 2002 Asian Game and World Cup, applying the plating and coating technique to screen printing. In addition, tourist and characteristic goods were of great value and image of visual communication displayed outside. After the screen printing in the surface of stainless steel, it obtained the plate coloring of beautiful a black glossy with a black Ru plating. At the identical surface, it did that the electrodeposition coating process in order to making a conductor state of image areas and a nonconductor state of nonimage areas. After the electrodeposition process, it removed the printing ink of image areas with solvent. A manufacturing process, it removed the printing ink of image areas with solvent. A manufacturing process completed with copper, nickel and gold plating at bared metal surface.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2005.10a
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• pp.161-164
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• 2005

The concept of Space-time is performed while the movement of human Is imaged on coming 20th century up. Specifically it is considered that the movement of human is caused by the relativistic otherness rather than an absolute subject in space of deconstructive tendency. The purpose of this study is that I try to analyze an expression of relative space-time concept in desconstructive tendency and I have to get a concept how this kind of expression effect the contemporary commercial space. Through this study, I can get to know that the expression of relative space-time concept expresses the dynamic construction by the indeterminacy and the visual effect by the dematerialization in the contemporary commercial interior-space. According to the result of study, the concept of space get to be more meaningful, relative space-time concept and it can be attributed to the concept of human's new creative space over human's life in general.

• Korean Institute of Interior Design Journal
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• no.5
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• pp.30-36
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• 1995

Light plays an important role in making a continuity of space and in determining the distinctive expression and char-acter of a space. Particularly, the introduction of natural light derives from our esthetic needs, as well as from the fundamental biologi-cal necessities of human beings. And also, adaptation to time and space is the vital factor of human survival and prosperity. Our visual recognition of light is usually formed not only by practical illumination but by analogy, expection and expe-rienced of lighting itself. As the forecase of natural light is (almost) impossible be-cause of variables such as changing weather, reflection rate of light and the patterns of shade, in designing the introduc-tion of daylight, there should be follow-ed careful considera-tion of the adaptation to such variety and the impet-us of light. The research was conducted to mane a contribution to cre-ate more rich and beautiful interior spaces by studying the characteristic of light which is one of the important factors of interior space design, and by inquiring the way to intro-duce light and its effect through the practical examples of Alvar Aalto, Le Corbusier and Louis I. Kahn.

• Journal of the Korean neurological association
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• v.36 no.4
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• pp.345-349
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• 2018

Familial Creutzfeldt-Jakob Disease (fCJD) is characteristic with older age onset, relatively low occurrence rate, slower progression and lower possibility of developing myoclonus, cerebellar, pyramidal signs and visual disturbance compared with classical sporadic CJD. We report a case of 75-year-old male patient presented with sudden onset of right side weakness with Broca's aphasia who has been diagnosed with fCJD with V180I mutation. This case indicates that fCJD with V180I mutation can have stroke-like initial presentation.

• Bulletin of the Korean Chemical Society
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• v.15 no.3
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• pp.193-197
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• 1994

Due to possibility of visual observation of phase transformations and processes during solidification, the transparent binary alloy models are important in materials and metallurgical sciences. As such, phase diagram, linear velocity of crystallization, microstructure and spectral behaviour of binary organic systems of benzidine with resorcinol and catechol involving formation of addition compound with congruent melting point have been studied. While their phase diagrams show the formation of two eutectics and a 1:2 (B:RC, B:CT) addition compound in each case, the crystallization data obey the Hillig-Turnbull equation. The microstructural investigations give the characteristic morphology of the eutectics and the addition compounds, the spectral studies suggest intermolecular hydrogen bonding between two components forming the molecular complex.