• 한국콘텐츠학회논문지
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• 제2권3호
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• pp.80-86
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• 2002

본 논문에서는 이진 위상 홀로그램과 간섭원리를 이용하여 기존의 광 암호화 방법보다 암호영상 마스크를 제작 하기는 쉽고 암호 해독은 어려운 영상 암호 기법과 복원 및 인증 시스템을 제안하였다. 제안한 암호화 방법은 원영상의 홀로그램을 암호화하므로 원영상을 이중으로 암호화한다. 또한 암호화된 위상패턴을 위상카드로 제작할 경우 광세기 검출기로 볼 수 없을 뿐만 아니라 복제할 수도 없어서 개인 정보보호 및 인증시스템에 매우 유용하게 사 용될 수 있다.

• ETRI Journal
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• 제37권5호
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• pp.990-1000
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• 2015

This paper presents an overlapping pattern substitution (PS) method. The original overlapping PS method as a reversible data hiding scheme works well with only four pattern pairs among fifteen possible such pairs. This paper generalizes the original PS method so that it will work well with an optimal pair from among the fifteen possible pattern pairs. To implement such an overlapping PS method, changeable and embeddable patterns are first defined. A class map is virtually constructed to identify the changeable and embeddable pairs. The run-lengths between consecutive least probable patterns are recorded. Experiments show that an implementation of our overlapping PS method works well with any possible type of pairs. Comparison results show that the proposed method achieves more embedding capacity, a higher PSNR value, and less human visual distortion for a given embedding payload.

• International Journal of Contents
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• 제13권4호
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• pp.39-46
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• 2017

Due to resource constraints, most of Android application developers need to address potential performance problems during application development and maintenance. The coding styles and patterns of Android programming could often affect the execution time and energy efficiency which are utilized by the Android applications. Thus, it is necessary for application developers to apply performance-enhancing programming practices for mobile application development. This paper introduces performance-enhancing best practices for Android programming, and further, it evaluates the impact of these practices on the CPU time of the application. The original version with the performance-worsening code has been refactored to become an efficient version without changing its functionality. To demonstrate the efficiency of the proposed approach, each coding pattern was evaluated by measuring the CPU time under the controlled runtime environment. Furthermore, the Android applications were evaluated and compared via the CPU time of the original version, with that of the refactored version. These experimental results indicate that, by -using the proposed programming practices, the Android developer can develop performance-efficient mobile applications.

• 한국콘텐츠학회논문지
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• 제7권2호
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• pp.222-229
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• 2007

만화콘텐츠는 단순히 스토리를 통한 원작만이 아니라 문화침투력이 강하고 아이디어의 고부가가치가 높은 엔터테인먼트 상품으로서의 무한한 가치를 지녔다. 또한 만화콘텐츠는 다양한 감정과 의사표현의 욕구를 충족시키는 감성기호로서의 커뮤니케이션 역할이 가능함으로써, 모바일 기반의 감성콘텐츠로 확장 가능성이 매우 높다. 본 논문은 만화콘텐츠 비즈니스의 이해를 통해 만화산업의 현황 및 매체별 발전방향을 조망해 보고자 했으며, 만화콘텐츠 비즈니스 영역을 확장하는 대안으로 만화콘텐츠 자체를 상품으로 기획하고 개발할 수 있는 상품개발 방안을 제안하고자 하였다.

• 한국도서관정보학회지
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• 제16권
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• pp.33-67
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• 1989

The purpose of this study is to analyze the three kinds of recarved books that were Wongak-Techam-Ryakbon, Kumkang-Banyakyung-Uiki, Sung-Yusikron-Sulki. the original edition of these recarved books were published by UiChon in Heungwang Temple with the Continued Edition of Tripitaka in the King Sukjong of the Koryo Dynasty. The continued edition was the collections of various and interpretations of Tripitaka, gathered from Song, Japan and Liao. This continued edition is not a imitation of any others but it is the original product of Koryo. The blocks were carved from the carefully proofread script of Koryo's best calligrapher. The results of this study can be summarized as follows: 1. The original edition of the Wongak-Yecham-Ryakbon was published at the third year of Suchang in Heungwang Temple. The names of two calligraphers and three proofreaders are recorded in the last part of the book. 2. The original edition of the Kumkang-Banyakyung-Uiki was also published at the fourth year of Suchang in Heungwang Temple. The publication data are recorded in the last part of the book that the calligrapher was ODaegong and the three proofreaders were Gakji, Jahyun and Dukyeon. 3. The Sung-Yusikron-Sulki is different from other recarved editions in physical format such as number of lines and letters in one printing page. The original edition of this book was published at Kwangkyowon in Kumsan Temple by Hyaedukwangsa. 4. The contents of these recarved editions are recently discovered.

• 한국콘텐츠학회논문지
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• 제5권4호
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• pp.133-140
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• 2005

문화기순(CT)은 좁은 의미로 문화콘텐츠를 만들어내는 데 기본이 되는 기술로 각 국은 세계적 문화 공감대를 형성할 수 있는 콘텐츠를 창출하기 위한 노력을 기울이고 있다. 우리 고유의 문화유산을 응용하는 다양한 콘텐츠가 생성될 때 창의적이고 세계적인 경쟁력을 갖추게 되며, 이를 위해 문화원형 복원기술은 필수적인 핵심 기술이다. 본 논문에서는 찬란한 문화유산을 가진 백제시대 유물인 금동용봉환두대도를 3차원 형상정보 처리기술과 고고학적, 과학적 분석 자료를 토대로 디지털의 원형복원한다. 먼저, 3차원 스캐닝 작업을 통해 취득된 데이터는 샘플링과 특징추출 및 정합과정 후 홀 채움 및 스무딩을 이용하여 보정하고, NURBS와 B-Spline 방법을 이용하여 곡면으로 모델링한다. 그런 다음, 환두대도 구성요소의 색상과 재질을 추정하여 텍스쳐를 편집한 후 맵핑한다. 제작되어진 원형 모델은 전문가의 검증을 거쳐 수정 보완되었다. 디지털 복원된 환두대도는 IT기술과 결합하여 디지털 박물관 구축 및 시대별 지역별, 유형별 환두대도의 정형화 된 데이터베이스를 구축하여 손실 유물의 원형 추정에 활용할 수 있다. 또한 고고학이나 보존과학의 교육 컨텐츠 및 영화, 방송, 게임, 애니메이션 등의 문화 콘텐츠로 활용할 수 있다.

• 한국환경과학회지
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• 제1권2호
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• pp.81.1-86
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• 1992

The amounts of ascorbic acid in chloroplasts treated with light and light+paraquat (PQ) were reduced by 81 and 82% of initial level, respectively at 24 hr at incubation. And those treated with dark and dark+PQ were decreased by W and 55% of the original level, respectively. Malondialdehyde (MDA) contents at 24 hr of dark and dark+PQ treatment were increased by 6 and 31% of the initial level, respectively. When chloroplasts were treated with light and light+PQ, MDA contents after 24 hr were increased by 88 and 146% of the initial level, respectively. SOD activities treated with light and light+PQ were increased by 10 and 20% of the initial level, respectively for 3 hr and thereafter reduced by 46 and 49% of the original level, respectively at 24 hr. However, the SOD activities treated with dark and dark+PQ were decreased by 37 and 30% of the initial level, respectively. It is considered that PQ triggers the oxidation of ascorbic acid, the induction of lipid peroxidation and the inactivation of SOD under light so that PQ has inhibitors effect on the pathway of plant metabolism. Key word: ascorbic acid, malondialdehyde, superoxide dismutase, paraquat, lipid peroxidation.

• 만화애니메이션 연구
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• 통권10호
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• pp.73-90
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• 2006

21세기는 감성과 문화로 중심가치가 이동하면서 콘텐츠의 역할과 필요성이 증대되고 있다. 그중에서 만화는 원작 콘텐츠로서 무한한 가치를 지닌 것으로 평가되고 있다. 더구나 90년대 이후 .인력과 산업규모도 팽창일로에 있다. 그러나 이런 양적증가에도 불구하고 학문연구 발달이 늦고 더구나 산업계와의 유기적 협력관계가 부족한 것이 현실이다. 교재개발과 체계화가 중요하며, 만화용어의 표준화 및 사전편찬 사업들이 선행되어야 한다. 만화용어가 널리 쓰이려면 보편성이 획득되어야 하고 그러기 위해서는 시간이 필요하다. 그에 앞서 올바른 정의와 사용이 선행되어야 한다. 따라서 만화용어의 표준화 작업과 연구는 만화산업을 견인하고 학문연구의 발전을 위한 기초작업으로서 학술적 연구와 산업현장에서의 효율성 제고에 크게 이바지할 것이다.

• 한국멀티미디어학회논문지
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• 제19권3호
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• pp.650-658
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• 2016

This study proposes web-based authoring system for the lecturers who published textbooks by inserting external open resource. When lecturer publishes textbooks, the system makes it easier to utilize external resources by providing an open resource pool that the lecturer can search not only his own resources but external resources. In addition, we designed an open resource pool based on Original Contents Tracing Model to check whether the scrapped resource is changed or not in the future. Open Resource Pool allows inserting text, images and videos by searching multimedia, and stores metadata for the follow-up management. We made the system to determine the change of the resource using the metadata stored in the tracking system. Through this research, we confirmed that it is possible to publish textbooks by utilizing a variety of open resources on the web and revise the book by tracing the scrapped resources.

• Environmental Sciences Bulletin of The Korean Environmental Sciences Society
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• 제1권2호
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• pp.81-86
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• 1997

The amounts of ascorbic acid in chloroplasts treated with light and light+paraquat (PQ) were reduced by 81 and $82\%$ of initial level, respectively at 24 hr at incubation. And those treated with dark and dark+PQ were decreased by 46 and $55\%$ of the original level, respectively. Malondialdehyde (MDA) contents at 24 hr of dark and dark+PQ treatment were increased by 6 and $31\%$ of the initial level, respectively. When chloroplasts were treated with light and light+PQ, MDA contents after 24 hr were increased by 88 and $146\%$ of the initial level, respectively. SOD activities treated with light and light+PQ were increased by 10 and $20\%$ of the initial level, respectively for 3 hr and thereafter reduced by 46 and $49\%$ of the original level, respectively at 24 hr. However, the SOD activities treated with dark and dark+PQ were decreased by 37 and $30\%$ of the initial level, respectively, It is considered that PQ triggers the oxidation of ascorbic acid, the induction of lipid peroxidation and the inactivation of SOD under light so that PQ has inhibitory effect on the pathway of plant metabolism.