• Journal of Korea Game Society
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• v.9 no.4
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• pp.67-80
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• 2009

In this paper, we described the development of a Korean Manual Alphabet (KMA) learning game with avatar. KMA letters correspond to the vocabulary of Korean Sign Language (KSL) when spelling a word. Each KMA letter corresponds to a letter of the Korean Alphabet (KA) and KA is represented as hand shapes by sign language user. We developed a KMA learning game for a beginner to learn KMA letters from sign language avatar and practice KMA presentation easily. The system composed of sign language teacher avatar GUI popup window based on OpenGL, KMA letter recognition module, KA letter raining game module and USB camera. A user learns a KMA letter with expressing KA syllabic from avatar and inputs a KMA letter to the system using USB camera. We evaluated the efficiency of the developed system through the verification of users.

• Journal of Korea Game Society
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• v.16 no.2
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• pp.7-16
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• 2016

In this paper, we propose a method for effectively detecting specific behavior. The proposed method detects outlying behavior based on the game players' characteristics. These characteristics are captured non-invasively in a general game environment and add keystroke based on repeated pattern. In this paper, cameras were used to analyze observed data such as facial expressions and player movements. Moreover, multimodal data from the game players was used to analyze high-dimensional game-player data for a detection effect of repeated behaviour pattern. A support vector machine was used to efficiently detect outlying behaviors. We verified the effectiveness of the proposed method using games from several genres. The recall rate of the outlying behavior pre-identified by industry experts was approximately 70%. In addition, Repeated behaviour pattern can be analysed possible. The proposed method can also be used for feedback and quantification about analysis of various interactive content provided in PC environments.

• Journal of Korea Game Society
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• v.10 no.1
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• pp.25-34
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• 2010

The entertainment has been quite affected by the development of scientific technology, so that the kind of contents and the type of enjoyment entertained to the people has been versatile and changed. As this trend goes on, the expectation level of the entertainment becomes gradually increased for the people's point of view. The proposed system can be designated as a physically recognizable 3D dancing game in which the avatar resembling the participant dances as tracking the face of the game participant. By the result of the survey, it can conclude that the proposed game system would be expected as a new and fascinating game rather than the currently available games due to the fact that it will give more interests and self-involvement since augmented experience in entertainment is provided.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.05b
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• pp.1217-1220
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• 2003

한국의 모바일 산업은 디지털 영상 시대에 국가 전략 산업이란 이름 아래 명칭과 개념의 통일된 코드도 만들어지기 전에 세계 최고 수준의 하드웨어 인프라와 네트웍크 인프라가 형성되었다. 또한 게임과 애니메이션은 지난 5년 동안 비교육적이고 천박한 문화에서 각광 받는 돈벌이로 현대의 시대성과 가장 밀착된 표현양식으로 새롭게 평가받고 있다. 이러한 필요성에 따라서 각 대학들은 앞 다투어 모바일 관련 게임이나 애니메이션 혹은 컨텐츠 관련 과목을 개설하고 있으나 실제로 "모바일 게임, 애니메이션 제작" 과 관련된 컨텐츠가 없거나 있어도 미비한 실정이다. 본 논문은 자바프로그램과 플래시를 이용하여 모바일 컨텐츠를 제작하고 실습해 볼 수 있는 시스템을 제안하고 구현하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.05b
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• pp.855-858
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• 2003

한국의 모바일 산업은 디지털 영상 시대에 국가 전략 산업이란 이름 아래 명칭과 개념의 통일된 코드도 만들어지기 전에 세계 최고 수준의 하드웨어 인프라와 네트웍크 인프라가 형성되었다. 또한 게임과 애니메이션은 지난 5년 동안 비교육적이고 천박한 문화에서 각광받는 돈벌이로 현대의 시대성과 가장 밀착된 표현양식으로 새롭게 평가받고 있다. 이러한 필요성에 따라서 각 대학들은 앞 다투어 모바일 관련 게임이나 애니메이션 혹은 컨텐츠 관련 과목을 개설하고 있으나 실제로 "모바일 게임, 애니메이션 제작"과 관련된 컨텐츠가 없거나 있어도 미비한 실정이다. 본 논문은 자바프로그램과 플래시를 이용하여 모바일 컨텐츠를 제작하고 실습해 볼 수 있는 시스템을 제안하고 구현하였다.

• Journal of Korea Game Society
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• v.4 no.4
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• pp.11-18
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• 2004

The on-line games in the past were played by only two persons exchanging data based on one-to-one connections, whereas recent ones (e.g. MMORPG: Massively Multi-player Online Role-playings Game) enable tens of thousands of people to be connected simultaneously. Specifically, Korea has established an excellent network infrastructure that can't be found anywhere in the world. Almost every household has a high-speed Internet access. What made this possible was, in part, high density of population that has accelerated the formation of good Internet infrastructure. However, this rapid increase in the use of on-line games may lead to surging traffics exceeding the limited Internet communication capacity so that the connection to the games is unstable or the server fails. expanding the servers though this measure is very costly could solve this problem. To deal with this problem, the present study proposes the load distribution technology that connects in the form of local clustering the game servers divided by their contents used in each on-line game reduces the loads of specific servers using the load balancer, and enhances performance of sewer for their efficient operation. In this paper, a cluster system is proposed where each Game server in the system has different contents service and loads are distributed efficiently using the game server resource information such as CPU utilization. Game sewers having different contents are mutually connected and managed with a network file system to maintain information consistency required to support resource information updates, deletions, and additions. Simulation studies show that our method performs better than other traditional methods. In terms of response time, our method shows shorter latency than RR (Round Robin) and LC (Least Connection) by about 12%, 10% respectively.

• Journal of Korea Multimedia Society
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• v.11 no.1
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• pp.76-87
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• 2008

As hardware performance rises, game users demand higher computer graphic, more convenient UI(User Interface), faster network, and smarter AI(Artificial Intelligence). At this time, however, AI development is accomplished by a co-development team or only one developer. For that reason, it's hard to verify that AI performance and basic game AI technology is lacking for developing high-level AI. Searching the merits and demerits of existing game AI platforms, we investigate main points to consider when designing game AI platforms in this paper. From this we suggest Darwin, a game platform, based on agent that developers embody AI easily and capable of proposing AI test with module that makes them find strategic position. And then evaluate achievement results through making agent used strategic module that Darwin offers.

• KIPS Transactions on Computer and Communication Systems
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• v.7 no.11
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• pp.269-274
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• 2018

MMORPG is a role-playing game that tens of thousands of people access it online at the same time. Users connect to the server through the game client and play with their own characters. If the user moves to a management area of another server beyond the area managed by the server, the user information must be transmitted to the server to be moved. In an actual game, the user is required to synchronize the established and the transferred information. In this paper, we propose a migration agent server in the virtual systems. We implement a seamless virtual server using the grid method to experiment with seamless server architecture for virtual systems. We propose a method to minimize the delay and equalize the load when the user moves to another server region in the virtual environment. Migration Agent acts as a cache server to reduce response time, the response time was reduced by 50% in the case of 70,000 people.

• Journal of the Korea Society for Simulation
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• v.19 no.3
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• pp.91-98
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• 2010

This paper is on the research result for analyzing the performance of GLORY(GLobal Resource management sYstem) used for Web Server Cluster system, which was developed at ETRI(Electronic and Telecommunication Research Institute). The paper includes the definition of Web Server Cluster System, the characteristics of the system, user oriented system performance, current performance enhancement methods, computer simulation model for GLORY and its experimental results for the performance of GLORY. GLORY is composed of 2048~1,000,000 units of PCs, and is used for Internet servers. From the results of the simulation experiments, we notice that GLORY has enough capacity to fully serve the appropriate level of Internet services. Also, the results show that Web server service time is longer than that for network transmission time but requires more DNS than expected, and that 100Mbps LAN is good enough for directly connecting Internet to the Web servers while not affecting the total system performance.

• Journal of the Korea Computer Graphics Society
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• v.16 no.1
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• pp.21-27
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• 2010

Today the lectures are usually practiced in a teacher-led traditional classroom system or a student-led e-learning system. Students passively follow the teacher's lectures in both systems, though. Also due to the advances in 3D Computer Graphics and Game technologies, there are trials to exploit the positive effect of games in learning. The serious games, specifically designed games for an educational goal, or existing games for a special class have been used as lectures. Still these games have a great difficulty in being integrated into the educational system technically and economically. Therefore a new 3D MMORPG based lecturing system is presented in this paper. In our new lecturing system, the characteristics of a 3D MMORPG, achievement, sociality, and immersion, are provided to motivate students to participate actively in a lecture. A teacher and students interact with each other in realtime as 3D characters in a 3D virtual classroom on-line. An ordinary teacher can also easily apply our new system to existing classes since a teacher only needs to specify a slide file to prepare a lecture. For the future work, a user study and the effect of our new lecturing system will be performed.