• Proceedings of the Korean Vacuum Society Conference
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• 2013.02a
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• pp.371-371
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• 2013

사파이어 단결정 웨이퍼는 제조과정에서 결정 성장 조건 및 기계적 연마에 의하여 내부적인 결함이 발생할 수 있다. 사파이어 단결정은 일반적으로 LED용 기판 재료로 사용되며, 내부결함이 발생 시 기판 위의 GaN 등 layer의 결함도 함께 증가하므로 기판의 결함을 줄이는 과정이 중요한 이슈이다. 이 과정에 X-선 토포그래피는 단결정의 내부 결함을 모니터링 하는데 있어서 매우 유용한 방법이다. 이에 본 연구에서는 사파이어 단결정 웨이퍼에 내재하는 결함 형태를 X-선 Lang 토포그래피 방법(X-ray Lang Topography)으로 이미징하여 관찰, 분석하였다. Lang 토포그래피 방법은 X-선 투과법으로 넓은 부분을 우수한 강도와 분해능으로 내부 결함을 관찰할 수 있는 장점을 지니고 있다. X-선 source는 Mo $k{\alpha}$ 1을 사용하였으며, 시료는 c-plane 사파이어 웨이퍼를 사용하였다. 사파이어 웨이퍼의 (110), (102) 회절면의 X-선 토포그래피 이미지를 통해 전위 결함의 유형에 따른 이미지 패턴의 형성 메커니즘에 대해 연구하였고, 측정 회절면과 두께, 표면 데미지에 따른 전위 결함 이미지의 변화를 확인하였다. X-선 토포그래피 이미지를 통해 단결정 c-plane 사파이어 웨이퍼의 전위 결함의 형성 메카니즘 연구와 유형별 이미지와 회절면, 두께, 표면 데미지에 따른 이미지 변화 등을 확인하였다.

• Composites Research
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• v.30 no.6
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• pp.393-398
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• 2017

The shrinkage distribution of a dental composite (Clearfil AP-X, Kuraray, Japan) used for dental restoration was observed using a digital image correlation method. In order to analyze the shrinkage distribution formed during and after light irradiation, digital images were taken with different photographing conditions for each period. Optimal photographing conditions during LED irradiation were obtained through a preliminary experiment in which the exposure time was applied from 0.15 ms to 0.55 ms in 0.05 ms intervals. The DIC analysis results showed that the strain was non-uniform. For the initial 20 s of light irradiation the composite resin shrank to the level of 50~60% of the final curing shrinkage. Such large shrinkage amount of the composite resin lump affected the tensile stress concentration near the adhesive region between the composite resin and the substrate.

• Proceedings of the Korean Fiber Society Conference
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• 2003.10b
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• pp.299-300
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• 2003

직물은 유연하여 외력에 의해 쉽게 굽힘, 비틀림 등의 변형이 일어난다. 이러한 특성 중 직물의 굽힘은 태, 봉제성, 드레이프성 등의 중요 인자로서 지금까지 여러 연구들이 직물의 구조에 관련하여 굽힘강성을 분석하려는 시도가 계속되어 왔다. 이러한 연구의 최초의 시도로서 1930년대 Peirce가 직물을 선형탄성체로 가정한 후 외팔보법을 적용시켜 굽힘길이로 굽힘강성을 나타내었으며[l] 현재까지도 이 시험법이 시행되어 오고 있다. (중략)

• Proceedings of the Costume Culture Conference
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• 2004.04a
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• pp.144-146
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• 2004

설문지를 이용한 조사연구법에 의해 실행되었으며, 현재 생활한복 디자인 교복을 착용하는 2개 고등학교 학생과 양장교복을 착용하고 있는 2개 고등학교 학생 560명을 조사대상으로 하였으며, 표본은 2003년 10월 조사 당시 모든 조사대상자는 7개월 이상의 교복 착용경험기간을 가지고 있는 학생들로 구성되었다. 자료는 빈도분석, 요인분석, t-test때 의해 분석되었다. (중략)

• The KIPS Transactions:PartB
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• v.13B no.4 s.107
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• pp.393-400
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• 2006

There are many feature extraction methods for face recognition. We need a new method to overcome the small sample problem that the number of feature variables is larger than the sample size for face image data. The paper considers partial least squares(PLS) as a new dimension reduction technique for feature vector. Principal Component Analysis(PCA), a conventional dimension reduction method, selects the components with maximum variability, irrespective of the class information. So, PCA does not necessarily extract features that are important for the discrimination of classes. PLS, on the other hand, constructs the components so that the correlation between the class variable and themselves is maximized. Therefore PLS components are more predictive than PCA components in classification. The experimental results on Manchester and ORL databases shows that PLS is to be preferred over PCA when classification is the goal and dimension reduction is needed.

• Korean journal of communication and information
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• v.50
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• pp.121-142
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• 2010

Can law be combined with television entertainment programs? This paper explores the ways in which law systems and law culture are reflected in and reflect the television legal series. TV legal series, such as legal dramas and infotainment shows, provide platforms for the audiences, who otherwise have few opportunity in real life, to engage with legal systems in societies. Adopting loosely dramatized reality programs, these legal series not only entertain and inform audiences but also educate citizens. This paper combines analyses of theoretical debates on law and television with analysis of TV text. The result shows that , dramatized enactment based on true stories and criminal cases, may have an important ideological role in which fictionalized dramas mask the hard realities and authoritative legal systems. By doing so, TV legal shows play their roles not as mere symbolic representation but as powerful institutions that construct the image of law and reality.

• Convergence Security Journal
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• v.16 no.7
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• pp.147-158
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• 2016

The purpose of this study was to investigate the influence of watching 'Real Man' program on university student s' military image and security awareness. For the purpose of the study, 392 university students in Seoul, Chungcheong and Jeolla were selected. With the collected data, factorial analysis, t-test, frequency analysis, one-way analysis of variance, and multiple regression analysis were performed through SPSS 21.0. First, according to personal characteristic and watching degree, there were differences in military image and security awareness. There were significant differences in rationality, coherence, familiarity, violence, authority among sub factors of military image and in perspective about policy towards North Korea, persepectives about North Korea, military threats of North Korea, security will among sub factors of security awareness. Second, military image of university students who watched 'Real Man' had an influence on security awareness. Military image had an meaningful influence on perspective about North Korea, military threats of North Korea, security will among sub factors of security awareness.

• Journal of the Korean Society for Nondestructive Testing
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• v.33 no.1
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• pp.40-45
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• 2013

The purpose of this study was to detect the pin hole defect of dental composite restoration using lock-in thermography method. Amplitude and phase images of the composite resin specimens were analyzed according to the lock-in frequency and the diameter of defect area. Through the amplitude image analysis, at lock-in frequency of 0.05 Hz, defect diameters 2-5 mm exhibited the highest amplitude contrast value between defective area and sound area. The lock-in frequency range of 0.3-0.5 Hz provided good phase angle contrast for the defect area. At lock-in frequency range of 0.5 Hz, defect diameter of 5 mm exhibited the highest phase contrast value. It is concluded that the infrared lock-in thermography method verified the effectiveness for detecting the pin hole defect of dental composite restoration.

• 한국벤처창업학회:학술대회논문집
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• 2021.04a
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• pp.155-159
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• 2021

현대인들은 학업, 취업, 업무, 장수 스트레스 등 연령대별로 다양한 환경 스트레스에 시달리고 있다. 특히 우리나라의 자살사망률은 OECD 국가 중 가장 높은 수준으로 최근 코로나19와 관련한 걱정과 두려움, 불안, 우울을 느끼는 국민이 늘어나면서 자살시도도 증가세에 있다. 치유농업은 이러한 다양한 사회문제를 해결하기 위한 대안으로 제시되고 있으며 농촌자원들을 활용하여 사람들에게 휴식처를 제공하고 기획된 프로그램을 통해 치유할 수 있어 그 만족도가 높게 나타나고 있다. 우리나라의 치유농업은 2020년 3월 치유농업 관련법이 제정되면서 본격적인 활성화가 예상되고 있으나 치유농업에 대한 다양한 학술적인 연구는 많이 부족한 실정이다. 본 연구의 목적은 치유농업 체험자를 대상으로 치유농업프로그램의 유형이 체험만족도에 미치는 영향을 조사하고, 기능적이미지와 감정적이미지가 매개역할을 하는지에 대해 분석하는데 있다. 본 연구에서는 독립변수에 치유농업프로그램의 대표적인 유형인 원예치유, 동물매개치유, 음식치유, 숲치유 4가지를 선정하였고 종속변수에 체험만족도를 선정하여 영향을 미칠 것이라는 인과적 경로를 검증하고자 한다. 또한, 기능적이미지와 감정적이미지의 매개효과를 중심으로 진행하고자 한다.

• Journal of Korea Entertainment Industry Association
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• v.10 no.4
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• pp.77-92
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• 2016

In this study, the relationship of images and sounds of the animations "Dots" and "Loops" which Norman McLaren animated with his Animated sound technique when he worked at Guggenheim museum at New York, are analyzed through the audiovisual analysis theory by Michel Chion, and through the theory of synchronism/asynchronism and parallelism/counterpoint by Siegfried Kracauer. For the results of the analysis, there are a few difference between "Dots" and "Loops" regarding the aspect of sound arrangement and expressive aspect of abstract animation. However, there are being of two main elements of sound, composing with monophony sound, making musical structure with sound effects, and the emphasizing of parallelism with synchronization bewteen images and sounds in common with both "Dots" and "Loops". In "Dots" and "Loops", there are close correlations between pitch of sound and arrangement/shape of image, between loudness of sound and size of image, and between length of sound and length/shape of image. The image and sound of "Dots" and "Loops" have equal relationship each other, rather than subordinate relationship according as image become sound and the sound become new image with the animated sound technique. "Dots" and "Loops" show tendency of minimal art and music video. Since these two films, and remind about the new approach to sound creation in today's animation production.