• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2006.05a
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• pp.164-167
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• 2006

N-Seoul Tower which is a symbol of Seoul installed new lights while remodeling. The purpose of this study is to help other buildings and towers to design by lighting design renewal process. The remodeled N-Seoul Tower would become a landmark of Seoul as a typical complex cultural space.

• Proceedings of the Korean Magnestics Society Conference
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• 2014.11a
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• pp.138-138
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• 2014

• Proceedings of the PSK Conference
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• 2002.04a
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• pp.122.2-122.2
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• 2002

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.10a
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• pp.366-369
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• 2021

본 논문에서는 동영상에서 일련의 과정을 거쳐 얻었던 학습데이터를 보다 간편하고 빠른 속도로 획득하는 방법을 제안한다. 음성과 영상 스트림을 처리하는 ffmpeg을 이용해 영상을 프레임화하고, 딥 러닝 기반의 YOLO 알고리즘을 사용하여 객체를 검출한다.

• Communications for Statistical Applications and Methods
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• v.12 no.2
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• pp.497-508
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• 2005

This paper aims at studying on K-means Clustering focusing on initialization which affect the clustering results in K-means cluster analysis. The four different methods(the MA method, the KA method, the Max-Min method and the Space Partition method) were compared and the clustering result shows that there were some differences among these methods, especially that the MA method sometimes leads to incorrect clustering due to the inappropriate initialization depending on the types of data and the Max-Min method is shown to be more effective than other methods especially when the data size is large.

• Journal of Electrical Engineering and Technology
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• v.10 no.3
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• pp.1102-1106
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• 2015

A hybrid supercapacitor (HS) is an energy storage device used to enhance the low weight energy density (Wh/kg) of a supercapacitor. On the other hand, a sudden decrease in capacity has been pointed out as a reliability problem after many charge/discharge cycles. The reliability problem of a HS affects the early aging process. In this study, the capacity performance of a HS was observed after charge/discharge. For detailed analysis of the initial charge/discharge cycles, the charge and discharge curve was measured at a low current density. In addition, a solid electrolyte interphase (SEI) layer was confirmed after the charge/discharge. A HC composed of a lithium titanate (LTO) anode and active carbon cathode was used. The charge/discharge efficiency of the first cycle was lower than the late cycles and the charge/discharge rate was also lower. This behavior was induced by SEI layer formation, which consumed Li ions in the LTO lattice. The formation of a SEI layer after the charge/discharge cycles was confirmed using a range of analysis techniques.

• Cartoon and Animation Studies
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• s.15
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• pp.151-164
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• 2009

The discussion on folk painting (minwha) has been continued till recent in various ways. MinWha is applied by painting artists and also utilized as a basic material of design. These are the attempts approved by the viewpoint of the 'Korean beauty'. In saying so, minwha symbolizes for typical types of Korean painting, and is articulated as an aspect of forgotten spirit. However, despite the fact of Minwha's frequent application, and its evident originality, it remains only the thread of the existence. Although minwha has a lot of commonalities and similarities with the characteristics of cartooning, a decisive attempt of cartooning is hardly shown through. Therefore, this paper is aim to classify creative paintings by the distinctive features of minwha, such as exaggeration and abridgment, sarcasm and current affair aspect, common technique of art drawing, caricatured element, expression of an ideal world, various techniques from artist's different comprehension, etcetera and to make opportunity to constructively apply these features in cartoons. The types of minwha are mostly classified by the contents of the painting. However, since the purpose of this thesis is to find caricatured aspects in minwha, it will be largely classified by the elements of animal, plant, human, insect species, finny tribe, feathered tribe, and nature phenomenon. This classification takes advantage of accessibility to understand the characterization of the object, and leads to take a positive approach.

• Journal of the Speleological Society of Korea
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• no.77
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• pp.67-72
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• 2007

ATMega8535 Controller is the ideal solution for use as a standard controller in many applications. The small compact size combined with easy program updates and modifications, make it ideal for use in machinery and control systems, such as alarms, card readers, real-time monitoring applications and much more. This board is ideal as the brains of your robot or at the center of your home-monitoring system. Today, most drivers must use a parking place day by day. Therefore we make time shorten. Using above-mentioned ATmega8535, a sensor of infrared rays, led and lcd, we will make a parking system which is able to display parking situation and lead a car at the best position of Parking easily and quickly. Trying this project, we will be more closer to practical application of electronic engineering bit by bit.

• Proceedings of the Korea Concrete Institute Conference
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• 2010.05a
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• pp.415-416
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• 2010

This study presents the fracture properties of steel fiber concrete. The volume ratio of steel fiber in the concrete specimen was changed from 0%, 0.5%, 0.75%, and to 1%. The notch length was changed from 0, 15, 30, to 45mm. By applying 3-point bending tests, J-integral($J_{Ic}$), $K_{Ic}$, $G_F$ deflection strength, and fracture energy was obtained. The test results showed that the fiber content increases the concrete fracture energy.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 1992.11a
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• pp.81-83
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• 1992

The superconducting thin films deposited on $SiO_x$ substrate by R.F magnetron sputter using $YBa_2Cu_3O_x$ single target have been made and annealed at $940^{\circ}C$ for 30 min. The thickness of films were 1000-2000${\AA}$ with a rate of 20-25${\AA}/min$ and superconducting properties of thin films depended on the compositions of pre-annealed the thin films. It has been analyzed by SEM photo-analysis and X-ray diffraction patterns of these samples obtained under the various conditions of this sputtering methods. and recognized the supperconducting thin films by electric properties.