• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2005.07a
• /
• pp.566-567
• /
• 2005

Until now variable pattern classification methods have been introduced. So, variable methods in PD source classification were applied. NN(neural network) the most used scheme as a PD(partial discharge) source classification. But in recent year another method were developed. These methods is present superior to NN in the field of image and signal process function of classification. In this paper, it is show classification result in PD source using three methods; that is, BP(back-propagation), ANFIS(adaptive neuro-fuzzy inference system), PCA-LDA(principle component analysis-linear discriminant analysis).

• Journal of the Korean Society of Costume
• /
• v.56 no.8 s.108
• /
• pp.148-159
• /
• 2006

The objective of this study is to consider the uniform as visual communication, and analyze the expression of symbol shown on the uniform design by the pattern by applying the visual symbol in the communication and operation of the meaning. Also, it is to construct the systematic modeling method of the expression of design symbol by the pattern of uniform in th e various fields. This study is to analyze the symbolic expression method of the uniform design by the pattern by suggesting the symbolic expression method as a frame through the visual symbolic approach of the uniform design and the analysis of semantic symbol according to that. As a result, there arose simplification and emphasis and a method of symbolic expression with the national flag, a conceptual factor characteristically in the sports uniform design. The characteristics of symbolic expression of uniform design were mainly used in the symbolic expression with the customary code and symbol. Also, the uniform in the enterprises were widely used in the expression of uniform with the suggestion and code by the color. As for the characteristics of symbolic expression shown on the event uniform design, the method of symbolic expression by the pattern of uniform was grasped differently asa result of symbolic expression through the image. The method of symbolic expression suggested on this study could be used on a basis of uniform design in the future. Accordingly, this study has a meaning of suggesting the methodology of uniform design that would be a parameter.

• Archives of design research
• /
• v.14 no.3
• /
• pp.135-144
• /
• 2001

What find the motive of new design from Korean traditional cultural inheritance and symbolize it visually is to create a new design of Korean style into the harmony of shape and aesthetics by harmonizing past design and modern one, to discover the value of the future, and to make a new traditional culture. This study is to find the motive of design from Korean traditional pattern and character of the twelve horary signs, to develop unique Korean style character by studying character to cause novel and refined sense and interest through the mix of traditional image and modern one, and to propose a plan to apply in various and practice the Korean style character to modern design. In addition, the purpose of this study is to discover the identity of Korean style from foreign culture by presenting identity and originality with our peculiar cultural elements as well as to develop the visual effect and character of traditional pattern, and to have national competitiveness with Korean style design from the world market of the future.

• Archives of design research
• /
• v.17 no.2
• /
• pp.157-170
• /
• 2004

As a virtual identity on the virtual space, Avata is expressed in the various graphic forms such as 2D and 3D. Avata is not just combination of characters, but it also reveals the cultural Avitus of the times or the society, which often represents the discrimination according to the generation or social stratum or the unconscious choice of popular culture The modern days are absolutely influenced by the popular culture. And, it is also the case in the virtual space as well as the real world, influencing the fashion trend, cultural taste, and even the behavioral pattern of individuals. Hereupon, through an analysis of cases of using Avata character graphic, we are going to look into the technical ways of expressing Avata and the overall pop culture trend and individual life pattern and taste which are shown in the choice of outfit, necessaries, and background. And, we will also find out the kitsch characteristics in the consumption of Avata. And, we also expect that the image of Avata would be developing into a positive identity demonstrating one's existence on the virtual space, not simply a meaningless choice and combination of image in expressing and consuming Avata.

• Journal of the Korean Society for Nondestructive Testing
• /
• v.27 no.2
• /
• pp.173-182
• /
• 2007

Cracks in concrete structures should be measured to periodically assess potential problems in durability and serviceability. Conventional crack measurement systems depend on visual inspections and manual measurements of the crack features such as width, length, and direction using microscope and crack gage. However, conventional methods take long time as well as manpower, and lack quantitative objectivity resulted by inspectors. In this study, an evaluation technique for concrete surface cracks is developed using image processing and artificial neural network. Developed technique consists of three major parts: (1) crack detection (2) crack analysis and (3) pattern recognition. To examine validity of the technique developed in this study, crack analyzing tests were performed on the images obtained from various types of concrete surface cracks. The test results revealed that the system is highly effective in automatically analyzing concrete surface cracks in terms of features and patterns of cracks.

• The Research Journal of the Costume Culture
• /
• v.12 no.3
• /
• pp.441-454
• /
• 2004

This article aimed at semiotically analyzing and encoding the characteristics of Pop. Artistic style of a dress in the 2000's, and understanding social and cultural meaning to characteristics revealed at modern style of a dress. As research methods, Pop. Art factors were adjusted to non-individuality, openness, eroticism, parody through precedent research comparing and considering Pop. art, and 61 photos were selected, and they were analyzed into signifier and signified. It's analysis results are as follows. Non-individualistic image revealed modern style of a dress was intensively indicated at the pattern aspect of Pop. Art style of a dress, and any remarkable characteristics were not shown at the form aspect. Non-individuality was actively and progressively expressed due to the effect of the 2000's trends to pursue of frank desire, artistic and sensual life. For open image revealed at modern style of a dress, the characteristics were intensively highlighted at the details and accessories of style of a dress, and at the details and accessories of style of a dress, and at textile and pattern aspect, and notable signifier did not turn up. Pop. Artistic eroticism in the 2000's could be seen to unconditionally expose, or commercialize sex, but fashionably and gorgeously re-interpret it, which was found that the expression to women was changed in a free and emotionally-oriented way by the influence of feminism, expansion of feministic thought and optimism on New-millenium. At parody, simple and humorous parody rather than deep intended or heavy mattered one was seen, which means the effect of the 21st culture pursuing pleasure, fun and humor appeared as an positive parody phenomenon. It is found that the Pop. Art style of a dress in the 2000s shows up as a feministic, bright, cheerful Pop. Art in that it creates exaggerated harmony mixed with decorativeness ad functionalism, and pursue for frank desire and reflects optimistic trend of New Millenium seeking for fun and humor.

• Composites Research
• /
• v.17 no.5
• /
• pp.1-6
• /
• 2004

Composite pressure vessels with HDPE (high density polyethlyne) liner with metal boss at each end were developed by Filament Winding Process. The vessel is composed of a dome-shaped part at each end and a cylinder-shaped part at the middle of the vessel. The environmental tests carried out for possible vessel materials such as High Density Polyethlyn (HDPE), resins and reinforcing fibers up to a year showed no significant damages. The boss was designed to minimize the gas leak which was verified by FEM analysis. Most ideal fiber tension was obtained by experimental method and the fiber volume fraction, $\textrm{V}_{f}$, obtained by image analyzer were 55.4 % in cylinder and 55.6 % in dome parts, respectively. Winding pattern is programmed to control the composite thickness in the dome areas such that the failure of the vessel may occur in the cylinder. During the cure, the vessel was rotated and a constant internal pressure of 0.62 bar was applied. From this, the vessel's burst pressure is improved by 28 %. The burst and fatigue tests for under-wound and fully wound vessel showed satisfactory results.

• Journal of the Korean Home Economics Association
• /
• v.39 no.1
• /
• pp.1-10
• /
• 2001

The purpose of this study was to analysis of design preference according to age of consumers in order to obtain basic informations which are necessary for the development of designs that can satisfy the needs and desire of Chinese consumers. The style, color, fabric pattern, fabric, image, and shape of clothing were used for design preference variations. The study was implemented by surveying 280 females living in Beijing, China. The results were as follows: 1) There were significant differences in the preference of style of outdoor clothes according to age. Chinese women in the age of twenties and fifties prefer to wear casual clothes. Preference ratio was more than 60% 2) There were significant differences in the preference of color of spring and summer clothes, but there was no difference in the preference of color of autumn and winter clothes. 3) There was a difference in the preference of fabric pattern of outdoor clothes. Generally Chinese women showed 50% of preference for the no patterned outdoor clothes. 4) There were no differences in the preference of fabric materials. Preferred material for spring and summer was cotton fabrics, and that for autumn and winter was woolen fabrics. 5) In the research of the preferred image of outdoor clothes, generally Chinese women showed the most preference for elegance style. Chines women who are in the age of thirties to forties preferred feminine style. However, Chinese women who are in the age of fifties like to choose simple style. 6) There was a significant difference in the preference of length of jacket and skirt, and generally Chinese women preferred to wear medium length of jacket and skirt. There was no difference in the preference of design of collar and shape of pants. However most Chinese women showed preference for tailored collar and straight shaped pants.

• Journal of the Korean Society for Railway
• /
• v.20 no.3
• /
• pp.374-381
• /
• 2017

Concrete sleepers, installed on majority of railroad track in this nation can, if not maintained properly, threaten the safety of running trains. In this paper, an algorithm for automatically identifying cracks in a sleeper image, taken by high-resolution camera, is developed based on Adaboost, known as the strongest adaptive algorithm and most actively utilized algorithm of current days. The developed algorithm is trained using crack characteristics drawn from the analysis results of crack and non-crack images of field-installed sleepers. The applicability of the developed algorithm is verified using 48 images utilized in the training process and 11 images not used in the process. The verification results show that cracks in all the sleeper images can be successfully identified with an identification rate greater than 90%, and that the developed automatic crack identification algorithm therefore has sufficient applicability.

• Journal of Biomedical Engineering Research
• /
• v.28 no.6
• /
• pp.756-767
• /
• 2007

For the combination of phosphor screens having various thicknesses and a photodiode array manufactured by complementary metal-oxide-semiconductor (CMOS) process, we report the observation of image-quality degradation under the irradiation of 45-kVp spectrum x rays. The image quality was assessed in terms of dark pixel signal, dynamic range, modulation-transfer function (MTF), noise-power spectrum (NPS), and detective quantum efficiency (DQE). For the accumulation of the absorbed dose, the radiation-induced increase both in dark signal and noise resulted in the gradual reduction in dynamic range. While the MTF was only slightly affected by the total ionizing dose, the noise power in the case of $Min-R^{TM}$ screen, which is the thinnest one among the considered screens in this study, became larger as the total dose was increased. This is caused by incomplete correction of the dark current fixed-pattern noise. In addition, the increase tendency in NPS was independent of the spatial frequency. For the cascaded model analysis, the additional noise source is from direct absorption of x-ray photons. The change in NPS with respect to the total dose degrades the DQE. However, with carefully updated and applied correction, we can overcome the detrimental effects of increased dark current on NPS and DQE. This study gives an initial motivation that the periodic monitoring of the image-quality degradation is an important issue for the long-term and healthy use of digital x-ray imaging detectors.