• Journal of the Korea Society of Computer and Information
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• v.14 no.2
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• pp.221-229
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• 2009

The development of the Internet and telecommunication technology has lead to the diversification of the distribution channel of movies. Internet users can easily watch movies through the Internet VOD(Video On Demand) theaters without a restriction of time and space. In this study, we try to understand the intention to use of internet VOD movies using the concepts of Technology Acceptance Model and Flow Model. We also consider the concepts of sensitivity of holdback period and availability of various choice in movie genre, along with demographic factors such as age and gender. Through our study we enhance our understanding on how and when users use the Internet VOD for their movie watching.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.23 no.5
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• pp.35-40
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• 2023

In this paper, a serial wireless LAN virtual communication module that allows microprocessors to communicate wirelessly with other peripheral devices is developed as part of a study to build an online virtual experiment system that allows them to practice virtually anytime, anywhere in microprocessor application education in electrical and electronic control engineering. The developed module is connected to the microprocessor in the virtual experiment system through serial interface. The serial data is sent to and received from peripheral devices through the wireless LAN interface of the host computer where the virtual experiment software is being performed. In order to verify the function of the developed serial wireless LAN virtual communication module, experiments were conducted in which a microprocessor in the virtual experiment system exchanged data with an Android smartphone through a wireless LAN interface of a host computer. The developed serial wireless LAN communication module is expected to enable virtual microprocessors to communicate with surrounding real devices through wireless LAN, which can be efficiently used in microprocessor application education.

• Knowledge Management Research
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• v.24 no.4
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• pp.63-85
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• 2023

This study aims to identify the primary user group in the growing metaverse space based on the increased interest during the COVID-19 era. It also aims to explore the predictive factors for metaverse adoption. To predict online activities, the study examined user purposes, motivations, and relevant demographic factors as predictive variables through model analysis. The data from the Korean Media Panel Survey were used, and a two-stage analysis with the Heckman two-stage sample selection model was conducted to predict metaverse users. The analysis revealed that the key factors influencing metaverse adoption were offline activities, openness, OTT usage, and purchasing of paid content. Moreover, in the second stage model, openness, gender, and paid content purchases were identified as significant variables for increasing metaverse usage time. These results indicate that understanding metaverse users is essential in the context of the rising interest in online activities during the COVID-19 era and can provide valuable insights for metaverse platform-related companies and developers.

• Proceedings of the Korean Society of Computer Information Conference
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• 2014.07a
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• pp.383-384
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• 2014

현재 대학은 온오프라인 경계가 무너지고 있다. 온라인을 통한 지식공유 활용이 활발해지고 정보기술의 발달에 따라 서서히 사이버대학으로 전환될 전망이다. 거기에 대학을 졸업한 인력들이 사이버대학으로 U턴하는 현상이 두드러지고 있다. 사이버대학의 가장 큰 장점은 시간과 공간에 구애 받지 않고 학습할 수 있다는 점이다. 하지만 사이버대학의 학습평가 방법은 많은 약점을 드러내고 있다. 본 논문에서는 사이버대학의 평가방법중 주관식유형의 평가시스템을 제안한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2012.07a
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• pp.191-193
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• 2012

인터넷과 기타 휴대용 PC등이 발전하고 보편화됨에 따라 인터넷 이용이 편리해짐은 좋지만 비대면성, 비익명성, 비 국경성 등 인터넷의 이러한 특성상 사이버 범죄들이 나날이 다양해지고 증가하고 있는 추세이다. 특히 사이버 범죄 중에서도 스토킹, 원조교제의 수단, 몰래카메라, 사이버음란물 유통 등 각종 신종 성폭력이 심각해지고 있어 사회문제로 끈임 없이 등장하고 있다. 현실세계에서의 성폭력과 마찬가지로 피해자가 느끼는 성적 수치심이나 심적 고통은 피해자의 자아에 깊은 상처를 남기며 더 나아가 왜곡된 성문화를 정착 시키는 새로운 사회적 문제로 작용한다는 점에서 사이버성폭력의 심각성과 문제는 오프라인상의 성폭력범죄에 비해 결코 뒤지지 않을 것이다. 물론 이러한 범죄들에 대한 처벌 조항들은 있다. 그러나 이런 것들이 있음에도 사이버상의 성폭력은 근절되지 않고 있다. 이것은 법적인 조치의 강화를 요구하는 동시에 인터넷을 사용하는 네티즌 스스로의 적극적 대처를 요구하는 것이기도 하다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.613-614
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• 2022

전 세계적인 주목을 받기 시작한 한류 콘텐츠의 확산으로 한국어 교육에 대한 수요가 폭발적으로 증가하고 있는 상황에서 효과적인 한국어 학습용 기능성 게임에 대한 가능성이 주목 받고 있다. 본 논문에서는 한국어 교육의 진입 과정에 해당 될 수 있는 한글을 게임 통해 학습하고 익숙해지는 경험을 제공할 수 있는 한글 학습 RPG '단어수집가'개발을 기획하고 해당 게임의 프로토타입을 개발한다. 제안 게임의 주인공은 가상의 공간에서의 체험을 통해 한글의 자음과 모음을 게임 아이템으로 획득하고 이를 조합하여 한글 단어를 합성하여 이를 게임에 활용하는 구조를 가지도록 설계되었고, 전체 게임 시나리오의 학습 적합성과 재미 요소들의 점검을 위해 실제 기획 의 핵심 내용을 적용한 프로토타입을 활용한다. 또한 본 게임에서 기획된 한글 학습용 게임은 미국 워싱턴에 위치한 조지워싱턴대학교에서 발행하는 미국인 대상의 한국어 교재와 스토리 등을 연동하여 온오프라인 연계 한글 교육 실현을 목표로 한다.

• Journal of Broadcast Engineering
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• v.28 no.2
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• pp.213-229
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• 2023

In this paper, we introduce a spatial sound rendering system that provides 6DoF spatial sound in real time in response to the movement of a listener located in a virtual environment. This system was implemented using MPEG-I AEP as a development environment for the CfP response of MPEG-I Immersive Audio and consists of an encoder and a renderer including a decoder. The encoder serves to offline encode metadata such as the spatial audio parameters of the virtual space scene included in EIF and the directivity information of the sound source provided in the SOFA file and deliver them to the bitstream. The renderer receives the transmitted bitstream and performs 6DoF spatial sound rendering in real time according to the position of the listener. The main spatial sound processing technologies applied to the rendering system include sound source effect and obstacle effect, and other ones for the system processing include Doppler effect, sound field effect and etc. The results of self-subjective evaluation of the developed system are introduced.

• Journal of Practical Engineering Education
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• v.15 no.2
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• pp.439 -447
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• 2023

This paper aims to develop a map for optimized class space using ZEP among the metaverse platforms. As a research method, the classroom space was organized so that the subject of learning became a learner, and the classroom space was modified and supplemented to optimize while being applied to elementary school computer classes. The contents of the study investigated learners' prior perception of metaverse, and compared and analyzed the advantages and disadvantages of the metaverse platform. In addition, the map was designed by reflecting the results of the survey, and after applying the map to the class, necessary APIs and apps were installed to supplement it. As a result, the learner became the subject of learning in the metaverse space, freely identified the space, and actively participated in the class. In particular, we found that students who were passive offline and those who had a low participation rate due to lack of skills participated more actively. In particular, students who were passive offline or whose participation was low due to lack of skills participated more actively. If API and JavaScript programs are added to collect log data of learners for learning analysis, real-time feedback is possible for learners, and learner feedback is possible for instructors with statistical data. If this is possible, the metaverse space can fully expect the role of a learning assistant for learners and a teaching assistant for instructors.

• Journal of The Korean Association For Science Education
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• v.35 no.1
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• pp.27-35
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• 2015

General education is changed by accepting the change in education environment to digital generation, emphasis about student-centered education, and change of teacher's role. E-learning has taken center stage as an effective learning environment but the problems are drawn for the absence of interaction that is important in learning. In this study, on the basis of questionnaire results about learning using website, we operated blended-learning where students come and go in cyberspace and physical space to set up the lesson environment for emphasizing interaction. We selected a control group (N=40) and an experimental group (N=40) from second grade students in a middle school for this research. General instructor-led lessons were implemented in the control group and blended-learning lessons to emphasize interaction between teacher and students were implemented in the experimental group. The experiments were applied to eight class-hours in 'characteristics of matter' unit. We implemented Test of Science Related Attitude (TOSRA) to the students before and after the lessons and administered questionnaire for checking attitude changes and perception in students. The results of the test show that the experimental group students were more encouraged and became more confident and curious about scientific learning than the control group students. The analysis of the interview and results of TOSRA show that blended-learning provided guidance and feedback by the teacher to the experimental group students more than the control group students. Blended-learning is suggested as a learning-method that is helpful in improving scientific attitude in students because it enables them to express their experiences without limit of time-space and promote interaction between teacher and students.

• Journal of Korea Multimedia Society
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• v.13 no.1
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• pp.102-110
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• 2010

H.264 SVC(Scalable Video Coding) provides the advantages of low disk storage requirement and high scalability. However, a streaming server or a user terminal has to extract a bit stream from SVC file. This paper proposes a bit stream extraction method which can get the maximum PSNR value while date bit rate does not exceed the available network bandwidth. To do this, this paper obtains the information about extraction points which can get the maximum PSNR value offline and decides the spatial/temporal resolution of a bit stream at run-time. This resolution information along with available network bandwidth is used as the parameters to a bit stream extractor. Through experiment with JSVM reference software, we proved that proposed bit stream extraction method can get a higher PSNR value.