• Proceedings of the Korean Society of Computer Information Conference
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• 2014.01a
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• pp.413-414
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• 2014

최근 스마트기기 보급의 확산과 이러닝 환경의 고도화로 이러닝 산업의 패러디임이 변화하면서 스마트 디바이스를 통한 학습형태의 스마트러닝이 주목받고 있다. 이처럼 스마트러닝이 부각되면서 기존의 이러닝 콘텐츠를 스마트 디바이스 환경에서도 제공 받고자 하는 사용자들의 요구가 증가하고 있지만 현재 기존 PC기반으로 구현된 이러닝 콘텐츠를 스마트기기에 적용하는데 있어 다양한 문제가 발생하고 있다. 특히 가장 근본적인 문제는 표준에 기인한다고 할 수 있으며 이를 해결하기 위해서는 콘텐츠에 대한 표준화가 필수적인 요소로 작용한다. 이에 본 논문에서는 최근 국내에서 전자책 및 디지털교과서 개발에 표준으로 자리잡고 있는 EPUB 3.0을 준용하여 기존 이러닝 콘텐츠의 데이터 포맷을 변경하고 표준화된 형태로 다양한 스마트 디바이스에 적용이 가능한 디지털교과서 솔루션을 설계하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.11a
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• pp.23-26
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• 2006

최근 대부분의 이러닝(E-Learning)을 교육하는 사이트는 학습 콘텐츠를 검색하는 방법이 단순한 리스트의 나열과 택스트 매칭(Text matching)방법을 사용하는 단점이 있다. 이를 보완하기 위해 좀 더 컴퓨터가 정보 데이터의 의미를 분석하여 검색이 가능하도록 개념 네트워크인 시맨틱웹(Semantic Web)이 등장하였다. 본 논문에서는 이러한 시맨틱웹의 온톨로지(Ontology) 언어 중에 토픽맵(Topic Maps)을 사용하여 많은 양의 학습 정보 데이터를 쉽고도 정확하게 연결 지어 학습 콘텐츠에 대한 정보를 표현하고, 구조화할 수 있는 방법을 모색해 보고자 한다. 학습자의 관심분야 정보, 학습객체의 학습 권장자의 정보와 함께 학습 경험과 검색 빈도수를 분석한 협력 필터링과 학습 에이전트의 개인화 기법을 동시에 사용하여 선호도를 분석한다. 이 선호도를 가지고 학습자의 메타데이터를 생성하고, 로그 데이터를 따로 데이터베이스에 저장한다. 이러한 학습자의 정보와 학습 콘텐츠간의 정보를 상호 연결하여, 그 토픽맵을 사용하여 연관관계를 정의해 줌으로써 학업성취도를 높이고, 학습자 개개인의 성향에 가장 알맞은 학습 콘텐츠를 탐색해가는 네비게이터(Navigator)를 설계하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.10a
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• pp.1632-1635
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• 2015

발전하는 IT 기술은 사회, 문화, 교육 등 전 산업 분야에 많은 영향을 미치고 있으며, e-book 및 콘텐츠 시장은 여러 산업분야에서 주목받고 있는 중요한 기술개발분야 중에 한 부분이라고 할 수 있다. 하지만 현재까지 e-book의 경우 비 표준화 확장, 단 방향성 비 상호작용, 2차원적인 콘텐츠 사용 등 여러가지 한계적 사용에 문제점을 가지고 있었다. 따라서 본 논문에서는 WebGL 3D 콘텐츠를 이용한 인터렉티브 가상 시뮬레이션 e-book 협업 저작도구를 설계하고 구현하였다. 본 연구에서는 표준화된 HTML5 기술과 IDPF에서 제안된 EPUB3를 통해 기존의 e-book 활용의 한계점들을 극복하고, WebGL 웹 표준 기술을 적용하여 인터렉티브 가상 시뮬레이션 사용이 가능한 전자책 그래픽 요소를 구현 하였다. 향후 본 연구를 통해 표준화된 e-book 콘텐츠 시장의 활성화와 효율적인 교육 도구의 발전을 기대한다.

• The Journal of the Korea Contents Association
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• v.6 no.5
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• pp.113-121
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• 2006

As Internet evolves, web sites are becoming more and more complex, and it costs a lot of time and money to update web sites. The explosive growth of a large amount of content has resulted in an excessive server load and high network traffic, and thus it decreases the quality of service. In this research, we designed and implemented an integrated content management system which can be constructed and managed the content easily, and which is combined a merchant system with a personal information system based on the distributed content gathering and searching in order to optimize the utilization of the content itself.

• Journal of the Korea Convergence Society
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• v.9 no.6
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• pp.17-23
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• 2018

In this paper, content management system (CMS) is introduced to serve IPTV, WEB, Mobile, Smart Devices and others using a single content management system's transcoding engine to overcome the limitations of traditional content management systems. Developed CMS reduced the burden of content management by automatically recognizing one content into several content simultaneously to provide the best content to each device, thereby reducing the burden of CMS additional adoption. The focus is on utilizing automated system for studio content and automatic management of mobile filmed images, and it is planned to develop the One-Stop Service for contents by adding functions for contents production later.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.18 no.5
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• pp.1135-1142
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• 2014

With the continued popularity of mobile devices such as smart-phones and tables, the development of the various kinds of digital contents making tools has not increased only the productivity of the digital contents, but also the demand of them rapidly. Geo-contents which means the digital contents related to location(geographic) information has enabled the user custom services. Especially, there are already some commercial location-based services that provide the user to POI (Points of Interest) with the geo-image contents such as photos tagged by the location. In the geo-video contents, there could be several related locations in the whole video, but only one representative location is used to tag a location to the video. In this paper, we have define the geo-video as a video content which has as many locations as the number of frames composing the video. We have also proposed the geo-video making tools and a viewer to create and utilize the geo-video contents. The geo-video contents proposed in this paper, are widely used in location based video contents searching services.

• Proceedings of the Korea Contents Association Conference
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• 2006.11a
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• pp.172-175
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• 2006

Hamel has a scholastic value as the first person, who announces Jeju and Korea to Europe. However, there has been little research on developing digital contents except a few books about Hamel. We develop an educational game on PDA using Hamel, based on Hamel character, Jeju's unique culture, multimedia technology, and so on. Compared with the previous games, it is different from the form of gathering points and has various game scenarios through interactions between Hamel character and game space. The structure of this game, which connects Jeju culture and cyber space together, represents the form of a digital storytelling. You can study through this game. It uses quizzes about Jeju culture, crossword puzzles, finding a sequence, finding differences between two pictures to teach users, and fixing pieces of a figure, etc. When we made the game, we divided it into some independent modules to make new game series easily using contents of the other provinces.

• Journal of Korea Multimedia Society
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• v.9 no.4
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• pp.515-527
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• 2006

Domestic standards for data broadcasting differ in the fact that satellite broadcasting chose MHP, cable OCAP, satellite ACAP, therefore making reuse of data contents impossible due to the differences. To resolve this problem, this study designed and implemented independent middleware class library for developing data broadcasting contents. To define class library which could bridge between applications and different middleware, standard library developing methods were used; and analysis of procedural application of each middleware was carried out. Based upon the analysis, classes with embedded transform and handle modules were defined to be linked to libraries of each middleware; and to verify the implemented class library, test contents were created to be compared to the existing contents. This kind of contents development by independent middleware class library allows for reuse of data contents easier, and develops an environment for higher quality of contents by reducing the efforts needed to learn each middleware for the developers.

• The Journal of the Korea Contents Association
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• v.3 no.3
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• pp.40-46
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• 2003

In the paper, designed digital contents security module to check unlawfulness reproduction and distribution of digital contents. This paper applied Diffie-Hellman algorithm that use discrete logarithm and random number as primary for public key application to create encryption key that agree each other through communication channel between DCPS and HOST, and applied Triple DES repeat DES 3 times through 2 different encryption key that is selecting ANSI X9.17 that is key management standard, ISO 8732 and PEM(Privacy-Enhanced Mail) etc. by secondary protection for safe transmission of digital contents in transmission line. Designed security module consist of key exchange module, key derivation module and copy protection processing module. Digital contents security module that design in this thesis checks reproduction and distribution of digital contents by unauthenticated user through user certification function and digital contents encryption function, and protect digital contents transmission line.

• Journal of the Korean School Mathematics Society
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• v.18 no.2
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• pp.223-240
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• 2015

This paper deals with how to design and develop white-box based e-learning contents which are equipped with conceptual understanding and step-by-step computational procedures for studying vector calculus for science-engineering majors who might need supplementary mathematics learning. Noting that rewriting rules are often used in school mathematics for students' problem solving, the theoretical aspects of rewriting rules are reviewed for developing supplementary e-learning contents for them. The software design of step-by-step problem solving requires careful arrangement of rewriting rules and pattern matching techniques for white-box procedures using a computer algebra system such as Mathematica. Several modules for step-by-step problem solving as well as producing dynamic display of e-learning contents was coded by Mathematica in order to find the length of a curve in vector calculus after implementing several rules for differentiation and integration. The developed contents are equipped with diagnostic modules and immediate feedback for supplementary learning in terms of a tutorial. At the end, this paper indicates the strengths and features of the developed contents for college students who need to increase math learning capabilities, and suggests future research directions.