• ETRI Journal
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• v.36 no.1
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• pp.80-88
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• 2014

Recently, the idea of the smart grid has been gaining significant attention and has become a hot research topic. The purpose of this paper is to present a novel smart grid management scheme that uses game theory principles. In our proposed scheme, power appliances in the smart grid adaptively form groups according to the non-cooperative hedonic game model. By exploiting multi-appliance diversity, appliances in each group are dynamically scheduled in a cooperative manner. For efficient smart grid management, the proposed coopetition game approach is dynamic and flexible to adaptively respond to current system conditions. The main feature is to maximize the overall system performance while satisfying the requirements of individual appliances. Simulation results indicate that our proposed scheme achieves higher energy efficiency and better system performance than other existing schemes.

• Journal of Korea Multimedia Society
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• v.21 no.5
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• pp.626-637
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• 2018

Human exchanges information not only through words, but also through body gesture or hand gesture. And they can be used to build effective interfaces in mobile, virtual reality, and augmented reality. The past 2D gesture recognition research had information loss caused by projecting 3D information in 2D. Since the recognition of the gesture in 3D is higher than 2D space in terms of recognition range, the complexity of gesture recognition increases. In this paper, we proposed a real-time gesture recognition deep learning model and application in 3D space using deep learning technique. First, in order to recognize the gesture in the 3D space, the data collection is performed using the unity game engine to construct and acquire data. Second, input vector normalization for learning 3D gesture recognition model is processed based on deep learning. Thirdly, the SELU(Scaled Exponential Linear Unit) function is applied to the neural network's active function for faster learning and better recognition performance. The proposed system is expected to be applicable to various fields such as rehabilitation cares, game applications, and virtual reality.

• Journal of Advanced Navigation Technology
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• v.13 no.1
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• pp.142-150
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• 2009

It is very important to generate a simplified model from a complex 3D character in computer game. We propose a new method of extracting feature lines from a 3D game character. Given an unstructured 3D character model containing texture information, we use model feature map (MFM), which is a 2D map that abstracts the variation of texture and curvature in the 3D character model. The MFM is created from both a texture map and a curvature map, which are produced separately by edge-detection to locate line features. The MFM can be edited interactively using standard image-processing tools. We demonstrate the technique on several data sets, including, but not limited to facial character.

• Journal of applied mathematics & informatics
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• v.17 no.1_2_3
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• pp.185-194
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• 2005

A Server-Proxies-Users communication system is studied by using Stackelberg strategy theory of game. A new model, in which the server, proxies and users are not equal is established, and that is a three-level programming. The solution existence of the model is proved.

• Proceedings of the Korean Information Science Society Conference
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• 2006.06c
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• pp.136-138
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• 2006

정밀한 요구사항 분석과 다양한 전략의 응용을 통해 최대이익과 최소손해를 보장할 수 있는 게임이론 협상 프로세스를 제안하고, 그러한 프로세스가 지속되는 상호작용 속에서 보이는 한계점을 Win-Win 모델을 도입함으로서 보완하고자 한다. 또한 이러한 게임이론 보완 방법론을 통해, 이해관계자간의 지속적인 상호작용 속에서 꾸준한 이익을 보장할 수 있다는 제안의 타당성을 사례연구를 통해서 확인한다.

• Journal of The Korean Association of Information Education
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• v.12 no.1
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• pp.99-107
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• 2008

Over online education based on wired Internet technologies, due to recent development of various mobile technologies, education based on mobile environment becomes popular. In the meanwhile, the young students are more interested in game-based education that provides more interaction and instant feedback than one-way cramming education. The purpose of this thesis is to develop a new motivation model for mobile environment and apply the model to the elementary school students. The proposed model, based on Keller's motivation model, is designed to increase study effects through motivating students with various game strategies. The proposed motivation model has the following characteristics. First of all, the best game genre can be provided for each study theme in early planning stage. Second, the model can allow students to have more interests in their study activity by providing various edutainment elements. Third, a stage of producing game synopsis and concrete scenario is included in motivation model. The stage enables more complete combination of game and mobile motivation strategies. Finally, the proposed model allows contents developed to be appled in teaching plan without any refinement. That is, the model allows a teaching plan to be extracted from study contents instantly.

• Journal of Advanced Navigation Technology
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• v.14 no.6
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• pp.882-889
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• 2010

The development of network technology has made rapid growth for online gaming industry on the Internet. Recently, game players have been wanting for a free migration on the game character for game player managed by online game servers of different types. Existing research on the acceptance of the game players demands have suggested migration model of the game character. However, the game Character Migration Process between the game server of different types migration is focused only, and safety issue that is necessary in an online transaction is overlooked. Therefore, ensure the safety of transactions information and when a dispute arises is necessary countermeasures. In this paper, Secure game Character Migration System (SCMP) using dual signature method when migrating game characters between the game servers of different types based on existing research is propose and looks to examine the safety.

• Proceedings of the Korean Society of Computer Information Conference
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• 2019.01a
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• pp.345-346
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• 2019

본 논문에서는 가상현실 게임의 평가 모델을 제안한다. 게임의 평가 모델은 장르별, 재미요소 특성에 맞게 연구 되어 왔다. 가상현실 게임에 대한 평가 모델은 아직까지 연구 제안된 모델이 없었다. 4차 산업과 연관하여 가상현실은 최근 가장 각광 받고 있는 분야 중 하나이며 기술의 발달은 게임 분야와 관련하여 많은 발전을 지속하고 있다. 가상현실 게임의 평가 모델 항목은 5가지로 구분하였다. 이를 기반으로 가상현실 슈팅 게임을 활용하여 이를 평가 할 수 있는지 검증하였다. 본 논문에서 제안한 평가영역을 바탕으로 가상현실 게임을 평가할 수 있으며 이는 게임 개발의 성공을 위한 하나의 가치 척도로 활용될 수 있다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.07a
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• pp.571-572
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• 2021

게임의 평가모델은 게임의 성공적 개발을 위하여 다양한 방향으로 연구되어 왔다. 특히 게임의 사전 평가는 게임의 성공을 견인하는 중요 요소로 인식되어 왔다. 다양한 장르의 게임을 평가하는 연구가 있어왔으나 4차 산업을 대두로 기술적 발달에 근거한 가상현실 게임과 증강 현실 게임 평가 항목은 연구 결과가 많지 않았다. 특히 증강 현실 게임에 중점하여 평가 항목을 연구한 결과는 전무한 상태이며 온라인 게임 등 다른 장르의 게임 평가항목을 이용하여 왔다. 특히 게임의 재미 요소를 근간으로 하는 평가 항목을 적용하기에는 어려움이 따르며 장르 및 플렛폼에 따라 평가 항목이 다양하여 증강 현실에 적합한 평가 항목을 개발하여 이를 적용하여 유용성을 확인한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.06a
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• pp.310-314
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• 2007

In this paper, we develop the thinking extension education program for the gifted students of information, and prove the validity and effectiveness of the proposed model by presenting the Tic-tac-toe problem as the practical example of the information-gifted students. This model consists of four phases which has the game tree as data structure and the search of game tree as control structure. And the search of game tree becomes the basis of the thinking extension education program. This model gives the help for students to learn representing the problem as tree structure and solving the problem of tree structure using the search method of game tree. The internal ability of the information-gifted for thinking extension of this education program contains the fluency, perceptiveness, originality, power of concentration, imaginative power, analyzing skills, pattern recognition, space sense, synthesizing, problem-solving.