• Proceedings of the Korean Society of Computer Information Conference
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• 2015.07a
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• pp.289-292
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• 2015

본 작품은 학생들이 만든 캡스톤디자인 작품이다. 본 작품의 기획의도는 특정한 형식에 구애받지 않고 자신만의 생각을 텍스트뿐만 아니라 여기에 사진과 동영상 등의 다양한 멀티미디어를 함께 첨부할 수 있는 스토리앱 형식의 전자책을 개발하고자 한다. 이 전자책은 디자인 템플릿을 통해 예쁘게 꾸밀 수 있으며, 본인이 담고 싶은 글을 책으로 만들고, 이렇게 만들어진 개성 있는 전자책은 상대방에게 공유를 통해 선물할 수 있는 어플리케이션으로 개발한다. 따라서 본 연구는 개성 있는 포토북을 자유롭고 쉽게 만들 수 있는 환경 구현 즉, CMS에 그치지 않고 개인의 소중한 추억을 타인들에게 공유함으로써 감동을 나눌 수 있게 하는 것이 최종 목표이다. 또한 모바일에서만 공유로 끝나는 것이 아닌 pc로도 전송 가능하기 때문에 만들어진 결과물을 출력 후 종이책으로 제본해 보관할 수 있는 서비스 역시 기대해 볼 수 있겠다.

• Journal of The Korean Association of Information Education
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• v.17 no.4
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• pp.487-496
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• 2013

This study examined the effects of STEAM program using authoring tool on elementary school students' creative personality and science-related attitude. For this study, after analyzing curriculum from the first term of 6th grade and extracting the learning elements and topic, I developed lesson plans and App contents. As a result of applying STEAM program using Storyline to 6th grade elementary school class. dividing two groups-experimental group, comparison group-for this study, tested t-test, the test result of experimental group got a meaningful result statistically. There was positive effect on improving elementary school students' creative personality and science-related attitude.

• Proceedings of the Korea Information Processing Society Conference
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• 2014.11a
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• pp.617-620
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• 2014

프로그래밍 개발 시에 발생하는 위험요소로는 비용, 품질, 일정이 있다. 이와 같은 문제는 구현시에 발생하게 된다. 구현 중심의 개발방법론을 택하여 이러한 위험을 방지하기 위해 본 논문에서는 애자일 방법론을 적용하여 앱 개발을 수행했다. 앱 개발에 필요한 기능 추출 및 분석, 애자일을 적용한 짝 프로그래밍, 사용자 스토리, 스프린트 계획을 작성하였다. 애자일 방법론을 적용해 고객, 사용자, 개발자 간의 소통을 이끌어내 프로젝트의 성공률을 올리고 개발자간의 원활한 의사표현을 통해 복잡도가 높은 업무를 원활히 수행할 수 있도록 애자일 방법론을 적용하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.11a
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• pp.363-366
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• 2017

최근 컨텐츠 제공 업체와 사용자들로부터 생성되는 미디어 데이터들의 용량이 늘어남에 따라, 사용자들은 자신이 보유한 단말 외에 추가적인 저장공간이 필요하게 되었다. 이에 추가 저장소 및 백업 장치로써 클라우드 스토리지 서비스의 사용률이 늘어나는 추세이다. 클라우드 서비스에 대한 수요가 증가하고 이와 함께 보안적인 이슈가 늘어남에 따라, 서비스 제공자들은 다양한 보안 기술들을 클라우드 시스템에 적용하고 있다. 본 논문에서는 클라우드 스토리지 서비스의 보안성을 위한 업로드, 다운로드간 파일 암 복호화 방법에 대해 제안한다. 제안한 어플리케이션은 보안 문제들을 해결하는 데에 도움이 될 것으로 기대된다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.23 no.6
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• pp.1049-1055
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• 2013

Smartphones are rapidly growing because of easy installation of the apps (application software) that users actually want. There are increasingly many apps that require cryptographic suites to be installed, for instance, for protecting account and financial data. Android platform provides protection mechanisms for memory and storage based on Linux kernel, but they are vulnerable to rooting attacks. In this paper, we analyze security mechanisms of Android platform and point out security problems. We show the security vulnerabilities of several commercial apps and suggest appropriate countermeasures.

• Journal of The Korean Association of Information Education
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• v.17 no.2
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• pp.225-232
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• 2013

The smart education is performed in the education field, but the contents related to the subject class performed in the various smart devices are insufficient and it is necessary to continue training teacher and learner for the app development education. Therefore this study developed and applied the contents production education program of the game type web app around elementary science 6 grade 1 term utilizing Storyline authoring tools, similar to PowerPoint and be executable in the various devices. After educating students, we investigate the convenience of the use of Storyline, satisfaction level of learning contents work activity, and the continued availability, and etc,. They are interested in the activity of the smart educational contents development and they wished to participate in the continued app development education and activity in spite of it make difficulty for using English menu.

• Journal of Digital Convergence
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• v.11 no.3
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• pp.353-361
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• 2013

In this study, to analyze the factors affecting the purchase of smart device applications, research model based on AHP(Analytic Hierarchy Process) model was employed and derived consumers' priorities of smart device game applications in the framework of contents characteristic factors. Survey was conducted with 10 experts who are involved in the smart game industry. The empirical result showed that the most important purchasing factor was story(0.217). And fame(0.171), graphics(0.134), operability(0.111), information(0.093), difficulty(0.085), speed(0.068), characters(0.053), price(0.042), genre(0.028) are presented in order in terms of the importance. The order of consumers' preferences to smart device game application was RPG, Tycoon, action, simulation, sports/leisure, quiz/puzzle/board, etc. gamble. It suggested that under the environment of smart devices consumers could enjoy not only simple puzzle and board game but also complicated and difficult games such as RPG and tycoon game due to the development of smart devices.

• Journal of The Korean Association of Information Education
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• v.17 no.2
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• pp.135-146
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• 2013

Smart Learning has been introduced in the educational field recently and it has been used in various ways to improve the quality of education. This research is focused on smart learning contents development for settlement in the educational field. It has carried forward studying in smart learning contents development using storyline, which is a kind of application authoring tool. We analyzed previous studies related to smart learning and presented the characteristics of storyline and the process of content development. Furthermore, we developed the content of digit sorting in Information Life for 6th grade elementary students and applied it to the field to evaluate the educational effectiveness. Through experimental results, the mean difference between traditional activities instruction and instruction using smart learning content was not significant. Nevertheless it has been found the immediate feedback and repeating of activities using smart learning has had positive impacts for understanding, satisfaction and learning interest.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.7 no.2
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• pp.69-81
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• 2014

SBS has developed "Social DMB App" and now the service through Android market, where the viewers can produce and share their emotion related in program using twitter while watching real-time DMB broadcasting program at the same time. Previously, it is difficult to combine TV and social media because of the difference of family shared medium and individual service. But, DMB, individual mobile broadcast service, can offer new interest to the viewer by integrating social media service and broadcast. The service base was provided to the viewer where they can use original contents of broadcasters by constructing social circle and they are able to express and share their emotion through social DMB app. In this paper, introduce of development technical for social DMB app service include of configuration app servic, link of DMB broadcasting and facebook.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.12
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• pp.287-293
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• 2018

The Korean peninsula has been known as an area that is free of volcanic disasters. However, recent observations and research results of volcanoes in Far East Asia, including Baedu Mountain and Japanese volcanoes, show that the Korean peninsula is no longer a safe area from volcanic disasters. Since 2012, the Korean government has been developing an IT-based construction technology, VDRS (Volcanic Disaster Response System), for effective volcanic disaster response system. The main users of VDRS are public officers in central or local governments. However, most of them have little experience and knowledge about volcanic disasters. Therefore, it is essential to develop education contents and implement training on volcanic disaster response for effective response in a real disaster situation. In this paper, we deal with the development of a mobile application based on virtual reality (VR) for realistic volcanic disaster response training. The objectives of training are the delivery of knowledge and experience for volcanic disasters. First, VR contents were generated based on spatial information. A 3D model was constructed based on a Digital Elevation Model (DEM), and visualization models for meterological effects and various volcanic disaster diffusion effects were implemented for the VR contents. Second, the mobile application for the volcanic disaster response training was implemented. A 12-step story board is proposed for volcanic disaster experience. The application was developed with the Unity3D engine based on the proposed story board to deliver knowledge of various volcanic disasters (volcanic ash, pyroclastic flows, volcanic mudflow etc.). The results of this paper will be used for volcanic disaster response and prevention training and for more realistic training linked with augmented reality technology in the future.