• The Journal of the Korea Contents Association
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• v.16 no.8
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• pp.493-507
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• 2016

This study aims to examine the representations of elders in reality shows focusing on gender disparity by employing a textual analysis and audience interviews. According to findings, as for elderly men, various images are presented while as for elderly women, traditional gender images are mainly reproduced. In the audience reception, the audiences' understanding of genres and their preexisting gender perceptions have important roles on their interpretations in the ways of producing gender discriminated meanings.

• Bulletin of the Society of Naval Architects of Korea
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• v.31 no.2
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• pp.43-46
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• 1994

VIP는 유동장을 영상기록매체에 기록하여 보존 및 재생이 가능함으로서 유동장의 재현성문제를 쉽게 해결할 수 있는 장점을 아울러 가지고 있다. 따라서, VIP는 비정상, 동시다점 계측 및 유 동장의 재현성확보가 원리적으로 가능함으로서 CFD에 필적할 수 있는 유일한 실험기법으로 평 가되고 있다. 본 해설에서는 이에 관한 내용을 개설적으로 정리하고자 하며, 상세한 것은 참고 문헌을 인용하기로 한다.

• Korean Journal of Optics and Photonics
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• v.9 no.1
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• pp.38-46
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• 1998

In this study, the color reproduction algorithm considering both of luminace and chromaticity of the background light is presented and tested to BT-H 1450 monitor(Panasonic). In the case of neglecting the background effect, the Macbeth ColorChecker's 24 colors are reproduced with the average color difference ${\Delta}E_{ab}^{*}$ more than 9.0. By using this method, the average color difference ${\Delta}E_{ab}^{*}$ is decreased less than 1.0. From this study, we can find that both of luminance and chromaticity of background light are very important factors in the color reproduction on a CRT display.

• The Korean Journal of Applied Statistics
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• v.36 no.2
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• pp.141-166
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• 2023

This paper investigates synthetic data generation methods and their evaluation measures. There have been increasing demands for releasing various types of data to the public for different purposes. At the same time, there are also unavoidable concerns about leaking critical or sensitive information. Many synthetic data generation methods have been proposed over the years in order to address these concerns and implemented in some countries, including Korea. The current study aims to introduce and compare three representative synthetic data generation approaches: Sequential regression, nonparametric Bayesian multiple imputations, and deep generative models. Several evaluation metrics that measure the utility and disclosure risk of synthetic data are also reviewed. We provide empirical comparisons of the three synthetic data generation approaches with respect to various evaluation measures. The findings of this work will help practitioners to have a better understanding of the advantages and disadvantages of those synthetic data methods.

• The Research Journal of the Costume Culture
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• v.15 no.4
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• pp.604-619
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• 2007

Aesthetic consciousness of the body determines the form of clothing, reflecting the time and culture as well as the individual and society. Using 'body' to analyze the clothing form, my study develops a framework by which to classify the representation and non-representation of the body in fashion. Theoretically, this study draws from Jean Baudrillard's Simulation theory which maintains that simulation develops the whole edifice of representation. My study substitutes the successive phases of the image to that of (non) representing body in fashion. The correspondences between them are; first, 'image is the reflection of a basic reality' for the representation of physicality, second, 'image masks and perverts a basic reality' for the manipulation of physicality, third, 'image masks the absence of a basic reality' for the absence of physicality, and fourth, 'image bears no relation to any reality whatever' for the absence of body in fashion. Aesthetic ideal of the body is visualized in the form of a dress. Fashion continues to explore forms and images that transcend the traditional representations of the clothed body. My study suggests a framework to analyze bodily representation in fashion, focusing on the relationship between the clothes and body.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 1998.04a
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• pp.147-150
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• 1998

다양한 응용분야에서 디지털 칼라영상은 프린터를 통ㅎ여 출력되어진다. 이러한 출력 장비들의 하드웨어적 특성은 칼라 영상의 색을 왜곡시켜 부정확한 색 재현을 얻게 된다. 본 논문에서는 색채학적 모델에 기반한 다차 비선형변환을 이용하여 주어진 칼라 프린터의 특성을 알아내고 이를 보정하는 방법을 제시한다. 또한, 샘플의 개수를 변화하면서 비선형 변환식을 계산하여 기기의 특성화 모델링 과정에 필요한 적정수준의 샘플 개수를 제시한다. 실험을 통하여 원본의 색과 재현되어진 색의 색차를 구함으로써 제시되어진 방법의 타당성을 검증한다.

• Journal of Korea Water Resources Association
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• v.48 no.7
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• pp.567-579
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• 2015

This study performed the non-stationary flood frequency analysis considering time-varying parameters of a probability density function. Also, return period and risk under non-stationary condition were estimated. A stationary model and three non-stationary models using Generalized Extreme Value(GEV) were developed. The only location parameter was assumed as time-varying parameter in the first model. In second model, the only scale parameter was assumed as time-varying parameter. Finally, the both parameters were assumed as time varying parameter in the last model. Relative likelihood ratio test and Akaike information criterion were used to select appropriate model. The suggested procedure in this study was applied to eight multipurpose dams in South Korea. Using relative likelihood ratio test and Akaike information criterion it is shown that the inflow into the Hapcheon dam and the Seomjingang dam were suitable for non-stationary GEV model but the other six dams were suitable for stationary GEV model. Also, it is shown that the estimated return period under non-stationary condition was shorter than those estimated under stationary condition.

• The Journal of Korean Society for Radiation Therapy
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• v.19 no.2
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• pp.123-129
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• 2007

Purpose: CT scan shows that significant tumor movement occurs in lesions located in the proximity of the heart, diaphragm, and lung hilus. There are differences concerning three kinds of type to get images following the Scan type called Axial, Helical, Cine (4D-CT) mode, when the scanning by CT. To know how each protocol describe accurately, this paper is going to give you reappearance using the moving phantom. Materials and Methods: To reconstruct the movement of superior-inferior and anterior-posterior, the manufactured moving phantom and the motor following breathing were used. To distinguish movement from captured images by CT scanning, a localizer adhered to the marker on the motor. The moving phantom fixed the movement of superior-inferior upon 1.3 cm /1 min. The motor following breathing fixed the movement of anterior-posterior upon 0.2 cm /1 min. After fixing each movement, CT scanning was taken by following the CT protocols. The movement of A localizer and volume-reappearance analyzed by RTP machine. Results: Total volume of a marker was 88.2 $cm^3$ considering movement of superior-inferior. Total volume was 184.3 $cm^3$. Total volume according to each CT scan protocol were 135 $cm^3$ by axial mode, 164.9 $cm^3$ by helical mode, 181.7 $cm^3$ by cine (4D-CT) mode. The most closely describable protocol about moving reappearance was cine mode, the marker attached localizer as well. Conclusion: CT scan should reappear concerning a exact organ-description and target, when the moving organ is being scanned by three kinds of CT protocols. The cine (4D-CT) mode has the advantage of the most highly reconstructible ability of the three protocols in reappearance of the marker using a moving phantom. The marker on the phantom has always regular motion but breathing patients don't move like a phantom. Breathing education and devices setting patients were needed so that images reconstruct breathing as exactly as possible. Users should also consider that an amount of radiation to patients is being bombed.

• Journal of Korea Multimedia Society
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• v.9 no.4
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• pp.451-459
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• 2006

Color reproduction of small LCD display is quite different from that of standard CRT due to the difference of physical, electrical, and optical characteristics. In this paper, we propose a simple and practical method using gamma and CCT correction for improvement of color reproduction on a small LCD display. First, we investigate characteristics of a small LCD display such as brightness, uniformity, color temperature, white and black balance, and nonlinear gamma. And, we also analyze color reproduction region and CCT trajectory according to LCD's input levels. Finally, the optimum gamma and CCT compensation method using LUT is proposed, and our proposed method was realized at mobile phone without hardware modification. In the experimental results, the result image of proposed algorithm is more close to standard color.

• Proceedings of the Korea Water Resources Association Conference
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• 2010.05a
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• pp.467-471
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• 2010

유속지수법(index velocity method)은 수위-유량관계에 유속을 추가적인 지수로 이용하는 방법이며 현재 자동유량측정 방법으로 널리 사용되고 있는 기법이다. 유속지수법에 많이 사용되는 측정 장비는 초음파유량계와 Acoustic Doppler Velocity Meter(ADVM) 등으로 모두 연속적인 수위와 유속을 측정하여 시계열 유량 자료를 생산하기 때문에 고리형 수위-유량관계의 재현이 가능하다. 기존의 연구에서 유속지수법은 괴산댐 하류에 적용되어 댐 방류량대비 평균 7%의 상대오차를 보였고, 시간에 따른 오차 발생이 적어 수위-유량관계에 비해 효율적으로 나타났다. 하지만 댐방류량에 의해 영향받는 구간에서는 고리형 수위-유량관계 재현에 한계를 나타냈다. 따라서 본 연구에서는 일반 자연하천인 임진강 적성지점에 ADVM을 설치하였고, 수위-단면적 관계와 평균유속($V_m$)-지표유속($V_i$) 관계를 수립하여 유속지수법에 의한 시계열 유량자료를 산정하였다. 산정된 유량자료는 측정 유량과 비교하여 정확도를 분석하였고, 시계열 유량 자료로부터 고리형 수위-유량관계를 재현하였다. 2009년 6월부터 9월까지 운영된 ADVM 자료로부터 산정된 유속지수법 최대 유량은 $10,491m^3/s$였으며, 총 18회의 실측 유량과 비교한 유속지수법 유량은 평균 7%의 상대오차를 나타냈다. 시계열 자료로부터 재현된 고리형 수위-유량관계는 임진강 적성지점의 경우 수위관측소 수위 10m, 유량 $2,000m^3/s$부터 발생하였다. 2009년 8월 11일 첨두유량 $8,000m^3/s$홍수 사상에서 발생한 고리형 수위-유량관계의 경우 수위 14m에서 $1,230m^3/s$의 유량차이를 보였고, 동일한 유량 $6,000m^3/s$에서 1.2m의 수위차이를 보였다. 2009년 8월 26일 첨두유량 $10,000m^3/s$에서 발생한 고리형 수위-유량관계에서도 마찬가지로 수위 16m에서 $1,670m^3/s$의 유량차, 유량 $8,000m^3/s$에서 수위 1.3m의 차이를 나타냈다. 이와 같이 유속지수법은 기존의 수위-유량관계가 가지는 한계점을 보완하여 고리형 수위-유량관계 재현이 가능하기 때문에 보다 정확한 유량 산정이 가능할 것으로 판단된다.