• Proceedings of the Korean Society of Precision Engineering Conference
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• 1994.10a
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• pp.240-245
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• 1994

Experiments on the drawability of squared boxes have been performed under various working conditions. In the present work, the pattern of material flow and the local change in the thickness of shell are used as the measures of drawability, and they are measured using the photo-etching technique. The effects of the size of draw bead, the magnitude of blank holding force and the condition of lubrication on the drawability of squared boxes have been analyzed.

• Transactions of the Society of Information Storage Systems
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• v.5 no.2
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• pp.64-69
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• 2009

In this paper, we investigate field distribution and interference pattern in the exit pupil and in the focal region. Also, we compare with metal and dielectric substrate for near-field recording. To obtain field distribution, we use modified vector diffraction theory and Zernike Polynomials. Finally, we design and optimize refractive index and thickness of disk for near-field surface recording and cover-layer incident recording.

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2014.11a
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• pp.153-154
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• 2014

전사 방식은 금속 패턴을 다른 기판에 전사시키는 방법으로, 대면적 디스플레이에 응용하기 위해 나노 사이즈 패턴을 반복적으로 전사하는 새로운 공정을 개발하였다. 나노선 임베드 구조체와 전해 도금 방식을 이용하여 나노선 네트워크 구조체를 반복적으로 이종 기판에 전사시키는데 성공하였으며, 기존의 전사 방식인 건식 방식에 비해 공정 속도를 높이고 전사되는 패턴의 사이즈를 효과적으로 낮추는 것을 확인하였다.

• Proceedings of the Optical Society of Korea Conference
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• 2006.02a
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• pp.331-332
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• 2006

• Korean Journal of Crystallography
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• v.1 no.2
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• pp.91-98
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• 1990

A twin model for icosahedral phase of rapidly solidified AB transition metal alloy is suggested. Electron diffraction patterns of our icosahedral twin model are simulated, taking into account of multiple diffraction. The simulated pattern with 5-fold symmetry well agrees with the experimental one. Our twin model is closely relevant to the icosahedral phase.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.23 no.60
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• pp.23-36
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• 2000

A probabilistic model of burr formation in face milling of gray cast iron is proposed. During a face milling operation, an irregular pattern of the edge profile consisting of burrs and edge breakouts is observed at the end of cut. Based on the metal cutting theory, we derive a probabilistic model. The operational bayesian modeling approach is adopted to include the relevant theory in the model.

• The korean journal of orthodontics
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• v.31 no.2 s.85
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• pp.261-270
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• 2001

The purpose of this study was to evaluate the clinical usefulness of plasma arc light which can reduce the curing time dramatically compared by shear bond strengths and failure patterns of the brackets bonded with visible light in direct bracket bonding. Some kinds of brackets were bonded with the Transbond$^{\circledR}$ to the human premolars which were embedded in the resin blocks according to the various conditions. After bonding, the shear bond strength was tested by Instron universal testing machine and in addition , the amount of residual adhesive remaining on the tooth after debonding was measured by the stereoscope and assessed with adhesive remnant index(ARI). The results were as follows : 1. When plasma arc light was used for bonding the brackets, the shear bond strength was clinically sufficient in both metal and ceramic brackets, but resin brackets showed significantly lower bond strength but which was clinically useful. 2. When metal brackets were bonded using visible light, there was no significant difference in shear bond strength due to the light-curing time and the bond strength was clinically sufficient. 3. When the adhesive failure patterns of brackets bonded with plasma arc light were observed by using the adhesive remnant index, the bond failure of the metal and resin bracket occurred more frequently at bracket-adhesive interface but the failure of the ceramic bracket occurred more frequently at enamel-adhesive interface. 4. There was no statistically significant difference of the shear bond strength and adhesive failure pattern between metal bracket bonded for 2 seconds by curing with plasma arc light and 10 seconds by curing with visible light. 6. When metal brackets were bonded using plasma arc light, the shear bond strength decreased as the distance from the light source increased. The above results suggest that plasma arc light can be clinically useful for bonding the brackets without fear of the decrease of the shear bond strength.

• Fashion & Textile Research Journal
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• v.20 no.2
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• pp.219-225
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• 2018

The purpose of this study is to make an ideal dummy for adult Maltese with proper investigation of its character and direct measurement of dog body-shape. The results of the study are as follows; First, there were 6 factors to affect the characteristics of Maltese body in the analysis, which are size of body, leg shape, chest shape, leg thickness, body length, length between fore-legs. In the cluster analysis with the 6 factors there were two types of Maltese body. Type 1 has body characteristics with large body, thick leg, and small distance between front legs. Type 2 has average size of all factors including body size, leg thickness, and length between fore-legs. Second, type 2 was selected as a representative one to make a dummy reflected body shape of characteristics because it took 67.71% from entire considered factors and has average value in the measured size. The first dummy pattern was planned by copying the surface area of the representative body shape with the method of surgical tape. A dummy of single body with trunk and legs was made using 30's cotton cloth, polyester inside batting, compressed form PVC and metallic wire on the joint of trunk and legs to support dummy shape. The second pattern was made by correcting size difference of the pattern and adding the pattern of neck covering plate, metal magnetic button was inserted on the center of joint area of trunk and legs to make detachable legs for easy slip on and off the pet's wear.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2018.10a
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• pp.114-114
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• 2018

Among the various volatile organic compounds (VOCs) emitted by the plant, floral scent plays a key role in attracting pollinators for reproduction and mediates ecological interactions. Floral scent is an important trait and industry drives the competition for flowers with novel scents. Chrysanthemum is one of the well-known ornamental plants and is a popular cut flower across the world. Floral scent and the genes responsible for the floral scent emission are poorly studied in chrysanthemum. In the present study, floral scent and the expression pattern of floral scent genes were analyzed in two chrysanthemum cultivars 'Golden Egg' and 'Gaya Glory'. Initially, intensity of the floral scent in five developing stages of flower including 'budding (B), bud developing (BD), initial blooming (IB), almost open (AO) and open flower (OF)' was analyzed using electronic nose (E-nose) with six metal oxide sensors. Based on the distance analysis, different stages of flower showed different relative intensity of scent according to the sensory evaluation. Although the scent pattern differed by stage, scent intensity was strongest in the OF stage in the completely opened flower in both the cultivars. Further, expression pattern of six genes in the floral scent pathway including FDS, IDI, ISPH, TPS2, TPS5 and TPS6 was observed in all the five stages of the flower in both the cultivars. The expression pattern of all the six genes differed by stage and the terpene synthase genes TPS2, TPS5 and TPS6 showed good expression levels in the $5^{th}$ flower stage compared to other stages. This study provides a preliminary data for understanding the regulation of floral scent in chrysanthemum.

• Journal of the Korean Society of Costume
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• v.43
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• pp.259-282
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• 1999

To analyze the characteristics of Orientalism which is expressed in the fashion of the 1990's this study was examined according to three aspects such as form textiles and pattern and the aspects was considered with regard to Chinese Indian Japanese Korean, Southeas Asian and North African style. 1. In form Orientalism which is influenced by latest other fashion trend; Naturalism and Minimalism is expressed as a comfortable casual style which simplifies the way of wearing and mixes the characteristic elements of folk costume with western costume. The way of layerd wearing like knotting wrapping draping and the symbolic from which is inspired by the unique are of each country are shown. 2. In textiles Chinese Japanese and Indian silk as well as Southeast Asian and North African cotton show a splendid oriental impression using vivid color. On the other hand the linens of Korea like hemp and ramie emphasize natural characteristics and show a simple and unartificial oriental beauty. But in the use of material and color it shows a remarkable tendency to break the preconceived idea by coordinating a luxurious silk with a practical denim or harmonizing technical new-masterials with traditional materials. 3. In pattern the decorative elements of Orientalism such as a traditional pattern skills to dye embroidery and other decorations are emphasized on the form of western costume. The sketchy patterns of Chinese Korean and Japanese styles which include the pattern of a flower a bamboo and a butterfly are expressed using embroidery or textile printing. The geometrical seriate patterns of Southeast Asian and North African styles use traditional dyeing methods like Batik. Also the Indian technique of decoration like Mirro Work satisfies handcrafted royalty and feminine romantic taste in modern minimal fashion. The Orientalism expressed in the fashion of 1990's emphasizes the characteristics of people wearing colthing which break the preconceived idea by simplifying the form harmonizing differences between oriental and western cultures and mixing the elements of traditional costumes among countries. Most of all. Ethno using geonmetrical seriate pattern and technical new metal material and Romantic Ethnic using flower embroidery precious stones and beads are appearing as a distinctinve feature.