• Proceedings of the Korea Information Processing Society Conference
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• 2002.11b
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• pp.1167-1170
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• 2002

멀티캐스트 기술은 다자간 비디오회의, 대화형 원격 강의, 소프트웨어 배포, 인터넷 게임 등 특정 사용자 그룹에게만 전송하는 효율적인 통신기술이다. 그러나, 멀티캐스트의 개방적 특성상, 언제 어디서나 임의의 그룹멤버가 메시지를 보낼 수 있다. 따라서 부적절한 데이터의 수신으로부터 그룹 멤버들을 보호하고 다양한 DOS 공격으로부터 멀티캐스트 트리를 보호하기 위해 송신자 접근통제를 수행하는 것이 중요하나 소스기반과 단일지점 또는 랑데부 지점에서 인가되거나 인증되는 연구가 진행되어 왔다. 본 논문에서는 접근권한에 따라 전송 메시지가 라우터의 임의의 지점에서 사진에 통제될 수 있는 양방향 멀티캐스트 트리에 대한 다단계 송신자 접근통제 메커니즘을 제시한다 다음으로 제시한 방식과 기존 전송 방식간의 메시지 전송 효율성 측면을 실험을 통하여 분석한다. 제안 방식이 라우터상에서 접근권한의 비교를 통하여 메시지를 사전에 걸러냄으로써 상대적으로 작은 메시지 전달 오버헤드를 갖는 것을 확인하였다.

• Journal of The Korean Association of Information Education
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• v.15 no.2
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• pp.171-178
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• 2011

The study proposed new approach for the developing a game addiction treatment program using digital storytelling. We chose 5 types of multimedia elements as educational contents for digital storytelling learning and prepared the teaching strategy for game addiction treatment. We applied the proposed program to 5 students who were included the high risk-user group of game addiction. We also conducted the game addiction tendency test, game usage time test, interview and the effectiveness test of proposed program. As a result of tests, the proposed program showed a positive effect that reduced the game addiction tendency. In the effectiveness test of proposed program, we found the result that 5 experimenters were improved the immersions, challenges, and social interaction, sense of accomplishment in digital storytelling program. We expect that this study will provide positive role and new education strategy for game addiction treatment.

• Design Convergence Study
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• v.18 no.4
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• pp.1-15
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• 2019

As the game industry is steadily becoming the spotlight industry, the importance of user experience design in game industry is increasing. This study tried to approach game from the viewpoint of user experience design and aimed to analyze the onboarding process focusing on user accessibility and retention in an online game. First, through literature review, onboarding process was devided into three stages. Then each stages were analyzed into experience design, game design elements to derive the key UX factors. Second, based on the UX elements, the game experience and cognitive element analysis frame was presented. With this frame, five domestic online games were qualitatively analyzed and cognitive elements of each game's onboarding process were derived. Key cognitive factors in each stages were, selective attention in the discovery stage, working memory and active learning in the learning stage, and participation and motivation in the immersion stage. Finally, improvement direction were presented, focusing on the key cognitive factors. These studies highlight the importance of the user entry process in online games and suggests improvements to lower entry barriers.

• KIPS Transactions on Software and Data Engineering
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• v.10 no.11
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• pp.529-534
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• 2021

Computing thinking is regarded as one of the important skills required in the 21st century, and many countries have introduced and implemented computing thinking training courses. Among computational thinking education methods, educational game-based methods increase student participation and motivation, and increase access to computational thinking. Autothinking is an educational game developed for the purpose of providing computational thinking education to learners. It is an adaptive system that dynamically provides feedback to learners and automatically adjusts the difficulty according to the learner's computational thinking ability. However, because the game was designed based on rules, it cannot intelligently consider the computational thinking of learners or give feedback. In this study, game data collected through Autothikning is introduced, and game score prediction that reflects computational thinking is performed in order to increase the adaptability of the game by using it. To solve this problem, a comparative study was conducted on linear regression, decision tree, random forest, and support vector machine algorithms, which are most commonly used in regression problems. As a result of the study, the linear regression method showed the best performance in predicting game scores.

• Journal of Korea Game Society
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• v.18 no.1
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• pp.83-94
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• 2018

This study is to analyze the difference of satisfaction according to the usage motivation of Live video streaming and characteristics of the adopter(early adopters, late adopters). For this purpose, we conducted a survey of 283 people in the age of 10~30 using AfreecaTV. As a result of the study, users spending daily hours on watching Afreeca TV showed a positive effect on the usage motivation. It shows only one difference in education level between the demographic characteristics, based on the adopter characteristics. Also the differences in the satisfaction factors were found to be habits, communication, entertainment accessibility in the early adopters and accessibility, credibility, habits, accessibility were significant influences on the late adopters.

• Journal of Korea Game Society
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• v.9 no.2
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• pp.13-22
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• 2009

Recently, mobile games are developed as the various genre and form with the hardware performance improvement and communication network speed increase of the mobile phone. But it shows the limit of the game material to be developed, because the mobile game has to play by using only the keypad handing of the mobile phone. In this research, 'Flip On / Off interface' and 'Microphone interface' were developed in order to utilize the physical device of the mobile phone as the game interface. 'Flip On / Off interface' and 'Microphone interface' have the advantage that there is no need to purchase a device as an additional interface with utilizing the hardware of the mobile phone itself and the progressing of a game is smooth in comparison with the keypad method of the pre-existence mobile game because the interface waiting time for a call response is short. Moreover, by applying to a commercializing game, the developed interface tests, we confirmed an availability at the commercialization inspection standards on mobile phone without the heap memory deficiency phenomenon to be smooth of an operation. Furthermore, in the result of usability evaluation accessability, reliability, and aesthetics were rated as 'high'. The results of this research reveal that the interface environment of the mobile game limited to a keypad will be able to be made with diversification.

• Journal of Korea Game Society
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• v.7 no.2
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• pp.53-60
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• 2007

This paper proposes the knowledge structure of an extended script for advertisement style game embodiment. This approach is able to allow for developing game and advertisement module. Research to reconsider contradictory awareness about existent game have been evolving from game education system, advertisement style game and simulation game for training and so on. In this paper, a situation hierarchy structure which allows the designer for simulating high-level specifications of game structure. And we describes with mathematical structure for proposed situation structure. Game unfolding utilizes with causality. Game reflects situation of a spatiotemporal real world. For this goal, we applied extended script to game world. Advertisement style module progresses by method to provide company's advertisement to user while game is gone. The advantage of proposed method are able to allows for novice to effectively insert banner image, video and so on into advertisement module. The proposed method was implemented in the "Shooting BaDuk" among games.

• Journal of the Korea Society of Computer and Information
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• v.27 no.1
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• pp.9-21
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• 2022

Mighty is an imperfect information game, similar to the internationally popular four-player card game Bridge, but more complex in terms of game rules and operation. An environment for exploring and analyzing the strategy of the Mighty Game is required, but compared to the development of many simulators for strategy analysis of other card games such as Bridge, there is no analysis tool for the Mighty Game. Even the definition and understanding of the Mighty game at the academic level is lacking. To solve these problems, this paper systematically defined the procedures and rules of the Mighty Game. And based on this definition, we implemented a simulator that can learn Mighty game and analyze various strategies. For the usability and accessibility of the service, the simulator was developed with JavaScript, and various analysis functions are provided in the web environment. Lastly, comparative analysis with other trick-taking games dealt with in the related research domain showed that the Mighty game has its value as an incomplete information game and that there are many characteristics that make it easy to apply AI-based learning methods.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.376-377
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• 2013

스마트폰이 도입된지 불과 몇 년만에 모바일 컴퓨팅은 이제 생활과 밀접한 다양한 콘텐츠를 소비하고 공유할 수 있는 공간이자 도구가 되었다. 이제 우리의 일상은 스마트 폰의 어플리케이션이나 SNS 등을 이용해 보다 합리적인 정보 탐색을 위하여 얻고자 하는 정보를 검색하고 실시간으로 공유한다. 최근 선호하는 스마트폰 어플리케이션은 오락, 유틸리티, 소셜 네트워크의 비중이 크다. 본 논문에서는 이러한 스마트 폰의 흐름에 발 맞춰, Android기반 게임 애플리케이션을 구현하고자 한다. 본 애플리케이션은 컴퓨터에서만 즐길 수 있던 게임에서 벗어나 보다 접근성이 편리한 스마트폰에서 실행할 수 있을 뿐 아니라 커뮤니케이션 인프라(별점 주기, 랭킹)와 item shop 기능을 제공한다. 본 연구에서는 더블버퍼링, 각종 센서, Surface View 등을 활용하여 스마트폰 게임 애플리케이션을 제작한다.

• Journal of Korea Game Society
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• v.17 no.2
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• pp.145-154
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• 2017

In the age of low fertility and aging society, youth suicide is not the problem of a certain class but it should be recognized as an urgent and important social problem to be solved by our society. We aim to support the training of youth gatekeeper who can acquire the right attitude and understanding of suicide for adolescents, detect premature suicide signs of peer friends and link them to specialized institutions. In this paper, we propose a scenario based learning program that is linked to the concrete situation that the young people can sympathize with and a serious educational game of visual novel type that encourages participation of youth. We expect that the proposed serious game will improve the accessibility of educational facilities and youths through smart devices.