• Journal of Korea Game Society
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• v.16 no.5
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• pp.23-36
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• 2016

The industry of virtual reality has received huge attention again after releasing the advanced Head Mounted display Devices, such as, the Oculus Rift VR, Samsung Gear VR, and PlayStation VR. However, almost VR contents studios concentrating on the only visual stimulus, before getting the diversity of genre. We found that the reasons of this phenomenon were lacking of enough time for profound studies, developments, and seeking resources. Therefore, this research suggests that the designing method about VR contents through the game resource, as a structure of story, which can handle the visual flow and the psychological commitments, to improves VR industry. Also we established the theoretical base of various VR contents planning and producing for game designers.

• Journal of Korea Game Society
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• v.15 no.6
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• pp.97-106
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• 2015

In an Unity engine for multi-player online games, the main thread processing game logic must be separated from the network thread that is responsible for network packet communication. Packet communication between the network threads needs to drop packets that overlap in order to improve the rendering speed. In this paper, the packet discard policy of network thread is proposed for an Unity engine for multi-player online games. The proposed method is the hybrid method of both Partial Packet Discard and Periodic Packet Discard methods to improve the rendering speed by periodically discarding overlapped network packets managed by the queue. The rendering speed of the proposed method is analyzed and its effectiveness is verified by various packet generating simulations of the Unity engine for multi-player online games.

• Journal of Korea Multimedia Society
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• v.12 no.11
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• pp.1652-1660
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• 2009

The main objective of this research is to build a behavior prediction model of gameplay for MMO (Massively Multiplayer Online) game using the GOMS analysis method. GOMS analysis is an observational approach to HCI(Human Computer Interaction) to model and predict behaviors of a human operator in a highly interactive task. In this research, a pilot experiment was previously conducted with three skilled gamers. The gamers were provided with the goals and operators through the user's guide book, and they found methods and selection rules while being observed. Based on the results obtained from the pilot study, this research was expanded and the model was further tested with 30 subjects (game experts). The new outcomes revealed that the relevance of GOMS analysis for predicting selection rules is 96.25% according to the degree of abstraction and 77.35% based on the degree of complexity. This research will provide game designers with a new testing mechanism in the early development stages, in order to improve the quality of the game product.

• The Journal of the Korea Contents Association
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• v.13 no.8
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• pp.229-239
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• 2013

The purpose of this study is to find out the mediation effects of social-support for adolescents' game addiction and school adaptation. For this study, 353 middle school students in the West-Gyungsangnamdo areas were included in the analysis. Setting as covariates, a mediator and extra variables significantly correlated with the criterion variable, regression analysis, SPSS Macro and bootstrapping methods were used to assess the mediation effects of social-support for adolescents' game addiction and school adaptation. The results showed that adolescents highly addicted to games tended to have more difficulty in adapting to school. However, it was found that social-support (mediator) fully mediated the influence of the adolescents' game addiction (predictor) on school adaptation (criterion variable). Based on the results of the analysis, we suggest implications for social work practice to improve how game-addicted adolescents settle down in middle school through increasing social-support - the mediator - and hence bring about a decrease in game addiction among adolescents.

• Journal of Korea Game Society
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• v.9 no.5
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• pp.105-115
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• 2009

This article proposes a design and implementation methodology of a gesture-based interface for augmented reality games. The topic of gesture-based augmented reality games is a promising area in the immersive future games using human body motions. However, due to the instability of the current motion recognition technologies, most previous development processes have introduced many ad hoc methods to handle the shortcomings and, hence, the game architectures have become highly irregular and inefficient This article proposes an efficient development methodology for gesture-based augmented reality games through prototyping a table tennis game with a gesture interface. We also verify the applicability of the prototyping mechanism by implementing and demonstrating the augmented reality table tennis game. In the experiments, the implemented prototype has stably tracked real rackets to allow fast movements and interactions without delay.

• International Journal of Control, Automation, and Systems
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• v.2 no.2
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• pp.247-255
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• 2004

The majority of real-world problems encountered by engineers involve simultaneous optimization of competing objectives. In this case instead of single optima, there is a set of alternative trade-offs, generally known as Pareto-optimal solutions. The use of evolutionary algorithms Pareto GA, which was first introduced by Goldberg in 1989, has now become a sort of standard in solving Multiobjective Optimization Problems (MOPs). Though this approach was further developed leading to numerous applications, these applications are based on Pareto ranking and employ the use of the fitness sharing function to maintain diversity. Another scheme for solving MOPs has been presented by J. Nash to solve MOPs originated from Game Theory and Economics. Sefrioui introduced the Nash Genetic Algorithm in 1998. This approach combines genetic algorithms with Nash's idea. Another central achievement of Game Theory is the introduction of an Evolutionary Stable Strategy, introduced by Maynard Smith in 1982. In this paper, we will try to find ESS as a solution of MOPs using our game model based co-evolutionary algorithm. First, we will investigate the validity of our co-evolutionary approach to solve MOPs. That is, we will demonstrate how the evolutionary game can be embodied using co-evolutionary algorithms and also confirm whether it can reach the optimal equilibrium point of a MOP. Second, we will evaluate the effectiveness of our approach, comparing it with other methods through rigorous experiments on several MOPs.

• The Journal of the Korea Contents Association
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• v.11 no.2
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• pp.152-161
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• 2011

The FPS, featured with high quality graphic of superior visual reality, is steadily growing because of the improvement of computer performance and technological advancement of game production. But most of the FPS games provide monotonous freedom with which players can only change the weapons in one character and this will make users lose their interests when playing games for long hours. Valve has introduced 'Team Fortress Classic' in 1999, in order to change the monotonous game methods. This game has attracted great attention because of the composition of various and unique characters through the introduction of military specialty system: that is the first trial in the history of FPS game. I, by analyzing this using MBTI, intend to analyze how much of immersion and interest the characters of various military specialties can provide to players when FPS games are developed.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.27 no.5
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• pp.1069-1076
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• 2017

Recently $Pok\acute{e}mon$ GO implements an online game with location-based real time augmented reality on mobile. The correct play of this game should be based on collecting the $Pok\acute{e}mon$ that appears as the user moves around by foot, but as the popularity increases, it appears an abuse to play easily. Many people have used an application that provides a mock location service such as Fake GPS, and these applications can be judged to be cheating in online games because they can play games in the house without moving. Detection of such cheating from a client point of view (mobile device) can consume a large amount of resources, which can reduce the speed of the game. It is difficult for developers to apply detection methods that negatively affect game usage and user's satisfaction. Therefore, in this paper, we propose a method to detect users abusing mock location service in online game by route analysis using GPS location record from the server point of view.

• Health Policy and Management
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• v.31 no.4
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• pp.479-490
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• 2021

Background: Conflict in the medical world in 2020 led to the rejection of the national examination for doctors. This study explained the process until the end of the national test refusal situation triggered in 2020 through the signaling game theory. The government has succeeded in requiring medical students to take the national exam. Methods: To explain the rejection of the national examination, we first compose and show an example of two small non-signaling games where medical students know which type the government is of, then combine them to play a signaling game. Results: The behavior of the government and medical students was examined through the signaling game model. In the context of the coronavirus disease 2019 (COVID-19) pandemic, the government makes an ultimatum, whatever the type. And the medical students accept it. They judged that the government could not be expected to abolish the policy. If COVID-19 had not occurred, medical students would have been able to continue the confrontation. Conclusion: The government instilled in the other party the perception that the government would not bend its policies because it was the surly type and would not be afraid of a strong confrontation. Through the image created in this way, the government was forced to accept the ultimatum by medical students. Academically, this study is to deal with the policy-making process through the signaling game theory. In the area of health care policy, this study suggests that various situations such as the type of government or the spread of COVID-19 can become important in addition to the rationality of the policy itself.

• Journal of The Korean Association of Information Education
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• v.23 no.3
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• pp.229-235
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• 2019

By combining the elements of the game or game in education, it improves the interest of the students and improves academic achievement by creating an environment where they can participate directly. We propose a curriculum that can learn the core principles of the elementary curriculum through fusion. The proposed curriculum helps students to understand the principles of the elementary curriculum by learning the artificial intelligence method in board game form. Learning methods that incorporate such elements of the game will enable learners to learn the principles of IT so that they can develop their ability to understand objects from various perspectives and enhance their thinking skills. It is expected that the elementary artificial intelligence curriculum that incorporates the proposed gamification will contribute to the development of the information science curriculum, which has been highlighted recently from the 2015 curriculum.