• Proceedings of the Korean Information Science Society Conference
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• 2012.06d
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• pp.64-66
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• 2012

빠르게 변화하는 정보화 시대에 맞추어 교육 방법 또한 그에 맞게 발전하고 있다. 특히 최근 등장한 스마트 디바이스는 방송, 문화, 경제뿐만 아니라 교육 분야에 까지 큰 영향을 미치고 있다. 본 논문에서는 스마트 디바이스를 활용하는 방안으로 실습 위주의 음악 수업에 초점을 맞추었다. 이를 위해 청소년들의 스마트 디바이스 이용실태를 파악하고, 스마트 디바이스를 활용한 수업에 대한 청소년들의 의견을 조사하였다. 또한 컴퓨터 음악 프로그램을 대체할 수 있는 애플리케이션들을 조사하여 비교 분석하였다. 이 같은 조사와 분석을 바탕으로, 실제 수업에 활용할 수 있는 두 가지 수업안을 제안하였으며, 이를 실제 활용하였을 때 쉽고 흥미로운 음악 수업이 될 것으로 보여진다. 본 논문은 스마트 디바이스를 음악교육에 활용하는 방법과 효과를 논의한 첫 번째 시도로서 의의가 있으며, 향후 다른 교과목에 적용할 때 주요 예제로서 활용될 수 있다고 사료된다.

• Fashion & Textile Research Journal
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• v.8 no.6
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• pp.627-633
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• 2006

This study examined the kinds, expression, techniques and arrangement of patterns for the traditional women's costume from 1995 to 2002 in North Korea. And the results were compared with South Korean. Conclusions are as follows : In the kinds of patterns the natural plant patterns were much more frequently used in North Korea. These tendency was same to South Korea. And the geometric patterns were more frequently used in South Korea. According to frequency in the expression of patterns, it was the realistic, geometric, stylized shape in North Korea. To the contrary it was the stylized, geometric, realistic shape in South Korea. In terms of decorative techniques, not only the traditional embroidery, gold leaf, multicolored stripes, but also modern collages, painting, beads, applique, flounce, ruffle were used in North Korea. Modern techniques were found comparatively a lot in North Korea, traditional techniques were found comparatively a lot in South Korea. In terms of arrangement of patterns, the modern arrangement was much more frequently used. And localized type of modern arrangement was found comparatively a lot in South and North Korea. Therefore traditional beauty was generally expressed by natural patterns, realistic shape and modern beauty was generally expressed by modern techniques and arrangement of patterns in North Korea.

• Journal of Korea Society of Industrial Information Systems
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• v.12 no.3
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• pp.1-9
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• 2007

This paper deals with manufacturing conditions to increase the working die's life span which are the key factor in the manufacturing process of the coins and medals. Using the boundary element method, the stress diagram for the coining die was obtained, which was used to find the life span of working die. To iud the working die's life span related to the diameter of collar and blank coin, eight different sizes were tested and the optimal condition was obtained. With the adjusted impressing force, the working die's life span was increased up to 60 percent.

• Proceedings of the Korean Information Science Society Conference
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• 2005.07b
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• pp.37-39
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• 2005

본 논문에서는 기존의 밀도 기반 전지 클러스터링 알고리즘의 성능을 개선한 밀도 기반 클러스터링의 근사적 접근법을 제안한다. 기존의 밀도 기반 전지 알고리즘은 다차원 색인의 많은 검색 공간을 빠르게 전지하면서도 원하는 클러스터를 정확히 찾아내는 특징을 가지고 있다. 그러나 기존 알고리즘은 전지를 위한 한계 값 설정을 위하여 단말 영역들의 밀도 값을 사용함으로써, 내부 영역에 속한 단말 영역들 간의 밀도 편차가 큰 경우 전지 여부에 대한 판별이 빨리 이루어지지 않는다. 또한, 최악의 경우에는 모든 단말 페이지를 검색하여야 하고, 이에 따라 성능이 저하될 수 있다. 반면에 제안하는 근사적 접근법에서는 한계 값 설정을 위해 단말 영역이 아닌 내부 영역의 밀도 값을 사용한다. 일반적으로, 내부 영역들 간의 밀도 편차는 단말 영역들 간의 밀도 편차보다 크지 않으므로, 근사 밀도 기반 전지 알고리즘에서는 더욱 많은 검색 공간의 전지 여부의 빨리 판별할 수 있게 된다. 성능 평가 실험을 수행한 결과, 제안한 알고리즘은 기존의 알고리즘과 비교하여 정확성 측면에서는 큰 차이가 없는 반면 수행 시간 측면에서는 최대 $17\%$의 성능 향상 효과가 있는 것으로 나타났다.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.04a
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• pp.683-686
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• 2015

본 논문에서는 스케일링-불변 윤곽선 이미지 매칭의 시각화 도구를 제안한다. 윤곽선 이미지를 시계열로 나타낼 경우, 시계열 매칭 기술을 활용하여 대용량 윤곽선 이미지 매칭을 보다 빠르게 수행할 수 있다. 이러한 윤곽선 이미지 매칭에서, 스케일링 불변의 지원은 스케일된 유사 이미지를 검색하기 위한 중요한 요소이다. 본 논문에서는 스케일링-불변 윤곽선 이미지 매칭 시스템을 클라이언트-서버 모델을 기반으로 구현한다. 먼저, 클라이언트는 질의 이미지를 시계열로 변환하고, 스케일링 팩터 구간 및 허용치와 함께 서버에 전달하고, 매칭 결과로 반환된 이미지를 차트 형태로 시각화한다. 다음으로 서버는 다차원 인덱스를 활용하여 대용량 윤곽선 시계열 데이터에 대한 빠른 시계열 매칭을 수행한다. 구현 결과, 제안하는 윤곽선 이미지 매칭 시각화 도구는 질의 이미지와 스케일링-불변 결과 이미지를 세 가지의 차트를 통해 직관적으로 비교 및 분석 가능하게 하였다.

• Korean Journal of Human Ecology
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• v.15 no.3
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• pp.469-480
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• 2006

Patterns in clothing symbolize some specific meaning that differs across cultures and religions, although patterns have been mostly used to realize human desires to overcome natural hazards in every culture or religion. This research aims to compare animal patterns of Korea (Confucian/Buddhism culture) with those of Byzantine (Christian culture), based upon a research method of literature survey. It is found through the research that both cultures used common patterns, such as dragon, butterfly, bat, honeybee, peacock, fish, and chicken. In the case of dragon patterns, Korea used it to symbolize emperor, dignity, or authority, while Byzantine used it for devil. Bat patterns had different symbolic meanings in both cultures: they mean happiness, longevity, prosperity or many off-springs in Korea while they mean misfortune or unhappiness in Byzantine. On the other hand, the rest of animal patterns, including butterfly, honeybee, peacock, chicken, had quite a similar symbolic meaning. Butterfly means change of life or beginning of new life in Korea, whereas it means resurrection in Byzantine. Honeybee symbolizes diligence, order, and cooperation. Many animal patterns were used in both cultures at the same time. Another difference can be found in terms of the kind of animals; for example, Korea used wild goose, pheasant, giraffe, deer, mandarin duck & turtle, while Byzantine used eagle, snake, pigeon. Of course, each and every animal has its own meaning, mostly positive. Except dragons and bats, both cultures have a similar meaning in most of animal patterns. Generally speaking, Korea used imaginary animals to pray for human happiness, but Byzantine used real animals to pray for resurrections.

• Archives of design research
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• v.21
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• pp.195-204
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• 1997

This study is the comparative analysis of the image structure young korean and Japanese on the present day consumer goods. Korean young men and women have image structure with 3factors of "minute-simplicity" , "practical-nan-practical ", "light-heavy", Japanese young men have those with, "light-heavy", "gay-quiet", "graceful-unstylish". And Japanese young women have those with, "gay-quiet", "light-heavy", "graceful-unstylish". Korean men and women have the same image structure. While Japanese men and women have different image structures. Korean young men and women are sensitive to decoration elements of consumer goods. Japanese young women are also sensitive to the decoration element. Korean young men and women and the Japanese young women seem to grasp their image on the consumer goods at the level of recognition, However, Japanese young men seem to grasp their image on the consumer goods at the level of sense of value.er, Japanese young men seem to grasp their image on the consumer goods at the level of sense of value.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.23 no.8
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• pp.2064-2071
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• 1998

A new digital clock level translator has been designed in order to produce a clock source of the internal logic circuits. The translator output has 50% duty ratio from small sinusoidal input such as TCXO which oscillates itself in poratable components. The circuit consists of positive and negative comparators, RS latch, charge pump, and reference vol- tage generator. It detects pulse width of the output waveform and feedbacks the control signal to the input com-parator. It detects pulse width of the output waveform and feedbacks the control signal to the input com-parator reference, producing output waveform with valid 50% duty ratio of the digital signal level. The designed level translator can be used as a sampling clock source of ADC, PLL and the colck source of the clock synthesizer. The circuit wasdesigned in a 0.8.mu.m analog CMOS technology with double metal, double poly, and BSIM3 circuit simulation model. From our experimental results, a stable operating characteristics of 50 +3% duty ratio was obtained from the sinusoidal input wave of 370 mV.

• The Journal of the Korea institute of electronic communication sciences
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• v.11 no.6
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• pp.561-566
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• 2016

A subway platform is equipped with screen doors in oder to avoid accidents of passengers, where Area sensors are installed for detecting obstacles in the screen doors. However, there exist frequent operating errors in screen doors due to dusts, sunlight, snow, and bugs. It is required to develope a detection device which reduces errors and elaborates detection function. In this paper, we compared the detection rates of the Area sensor the 3D sensor using CCTV-based image data with installing sensors at the screen door in Munyang station Daegu, where 3D sensor is applied with the space division multiple detection algorithms. It is measured that the detection rate of 3D sensor and Area sensor is approximately 89.61% and 78.88%, respectively. The results confirmed that 3D senor has higher detection rate compared with Area sensor with the rate of 6.87~9.79%, and 3D sensor has benefit in the aspect of installation fee.

• Korean Journal of Heritage: History & Science
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• v.41 no.2
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• pp.61-78
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• 2008

Celadons painted in underglaze iron brown 'Sung(成)' inscription are characteristic celadons excavated only at the No. 7 kiln site located at Sadang-ri(沙堂里), Daegu-myeon(大口面), Gangjin-gun(康津郡), Jeollanamdo(全羅南道), Korea and has inscription in the inner center of the foot by brush. The inscription was marked where it is not easily seen. it can be assumed that since it showed a variety of hand writings, many people were involved in manufacturing these celadons and the 'Sung' inscription was marked after workshop rather than manufacturer. It was also found that quality of glaze, paste, shape, pattern and firing method were same and these were manufactured with the same techniques in the same period. Kinds of these celadons were mainly sets of tablewares including bowl with handle, bowl, plate, cup, bowl with cover and bottle. Raised relief designs using extrusion technic were especially preferred rather than incised designs and inlaid designs. Cases of using inlaid designs were not frequently found compared to incised designs, thus it can be assumed that in this period, inlaid designs were not generally used. Special designs having the meaning of authority or dignity such as chrysanthemum, peony, parrot and lotus plate designs were not found. Foot was molded with 'U' type except some bowls with cover and plates and firing was done after glazing the whole surface of the ceramic with the support of quartzite at 3 to 4 places of inner bottom of foot. Production period of these celadons with 'Sung' inscription can not be confirmed from other excavation sites outside of No. 7 kiln site at Sadang-ri since there are no other excavation sites whose relics bear 'Sung' inscription. Through comparison research with other relics bear the characteristics of these celadons from tombs, temple sites, shipwrecks, production period of these celadons with 'Sung' inscription can be assumed as second quarter of 13th century. And since the quality of these celadons are generally inferior to the top-quality celadons which were supplied to royal familes and high-ranking aristocrats, it can be deducted that these celadons with 'Sung' inscription were supplied to classes lower than royal familes and high-ranking aristocrats. So it is considered that Celadons with 'Sung' inscription have a great significance as a chronological material to complement the blank of the first half of the 13th century because most of celadons with raised relief designs and engraved relief designs were attributed to 12th century, the period of prosperity.