Action recognition technology has many application fields including gaming, human-computer interaction,
security, virtual reality, etc. The technology has recently advanced and simplified by the introduction of real
time depth cameras. The most famous depth camera, Kinect, has shown its success in human action
recognitions by supervised learning methods. However, those method require a large number of motion
capture data as the ground truth of each skeleton points. This paper proposes a human skeleton extraction
method without using reference data. The method extracts the minimum number of articulation points
instead of full skeleton data. The articulation points are used as an real-time interface for 3D interaction
games.

The education based on synesthesia has been used to be applied for several years. Especially, We focused
on the Coloured-hearing Synesthesia for music education for children who have difficulty in practicing
pitch by using the serious game based on Coloured-hearing theory. Also, smart platform is flexible for
several sort of video games so we expect good accessibility for children. For proving the effectiveness for
education by using this technology and theory, we design the serious game for music called “Bunny’s
Cave” based on Coloured-hearing theory and conduct the usability test aimed at 3rd grade student in
elementary school.

As a macroscopic research for the economic system in MMORPG’s, I have analyzed the differentiation &
characteristic of each economic system such as Picking Economy, Laissez-faire, Revised Capitalism,
Neo-liberalism as well as Economic Democracy which is shown on online game. The picking economy of
online game, like as Ultima Online, has the characteristic of co-work & co-distribution but the capitalist
who has accumulated wealth appeared on Laissez-faire period. When the economic system of Laissez-faire
has fell down, Revised Capitalism that includes the characteristics of government intervention has appeared.
Finally, ArcheAge and MapleStory 2, which are represent for Neo-liberalism and economic democracy, are
characterized by recovery of market functions & welfare.

Recent studies have shown that during the playing of violent online games, it is not increased aggression
but rather alleviation in aggression that is critical in determining whether playing gaming has positive
outcomes on the venting of aggression. Drawingthe aggression catharsis perspective and gaming
research, we extend this line of investigation by exploring whether gaming results in a decrease in
aggression, across a wide variety of games. Using dataa survey of 771 online game users in Korea,
we examined the associations among Therapeutic Catharsis Seeking, Game Self-Efficacy, Big Five
Personality Traits, Game genre (violentnonviolent), Daily online gaming time, and Demographic
variables. Results showed that therapeutic catharsis seeking and game self-efficacy decreased user
aggression. Neuroticism negatively affected aggression while agreeableness enhanced the degree of
aggression regardless of game genre. These findings have important implications for the use of gaming as a
mood management tool.

This paper analyzes the simulation operation flow of Bullet physics engine. Based on this analysis, four
kinds of multi-rigid-body game characters are designed. This paper also profiles the performance metrics
such as the CPU utilization, the memory usage, and the computation time by multi-rigid-body character
simulations. For the CPU utilization, the Tongs Vehicle is the best and provides 45.1% less than the other
character simulations. The computation times of the Four-leg robot and the Dragon are longer than those of
the others. The memory usage of the Dragon simulation is the largest, which is average 1.32 times more
than the others. Because all parts of Dragon are composed of triangular mesh models in 3DMax. The
performance profiling with the criteria such as reducing the computation time and the computing resources,
the complexities of the collision shapes, and the number of rigid bodies takes an important role in the
design of the multi-rigid-body game characters.

The purpose of this study was to investigate the environmental factors that affect the computer literacy of
childcare teachers. A survey was conducted to get information about teachers' ICT utilization ability and
their physical and educational condition. Binary logistic regression analysis was performed using SPSS
17.0 program on the data of 293 teachers who work in childcare centers in capital area, and the following
results were obtained. First, computer-related physical environment and computer training did not affect the
teachers' computer literacy. Second, taking computer course had effects on the basic skills, word-processing
ability, internet communication ability and computer program utilization. Third, the number of hours of
using computers affected the ability to install and maintain computers. Fourth, the purchase of
computer-related books and magazines and the number of computer programs they use had an effect on
their computer program utilization. These results have significance in that they imply what is needed for
improving childcare teachers' computer literacy in terms of institutional support.

In this study, we designed and implemented a protection application utilizing baby play mat. Proposed
application can be configured contents to educate and play a crossword puzzle. While parents and children
are away for a while, it is possible to observe play behavior of children and control contents with a
smart-phone leveraging the Internet of Things(IoT) technology. The mat is designed to play the play-based
education contentsthe game for children(aged 0-3). The computing environment of the smart play mat
was building by utilizing RFID, Arduino and sensors. This study is expected to be used in various places
that require protection of children such as the child-care center, nursery and preschool.

South Korea has led the global online game markets successfully in the mobile game platform based social
network service with commercialization and showed the potential of the mobile game market. Currently,
Korea's game industry is accelerating the global expansion for the mobile game market based on online
game technology and mobile infrastructure. However, recently as mobile games attract attention in the
mobile business and digital entertainment markets, the competition grows so fast. Cooperation between
game developers and publishers have important implications in mobile games as well as online games for
competitiveness through selection and concentration. This study was designed to support decision making
at the outsourcing for publisher and the development of mobile games with key success factor analysis. The
key evaluation factors of the mobile game were extracted through the literature review and expert groups,
and then the relative importance between each factor was derived to take advantage of the AHP,
Multi-criteria decision method. Differences between the online game and mobile game were analysed in
this evaluation process. Also we were able to verify this evaluation model by applying the released mobile
game. As a result, accomplishment and gambling in the mobile game was found to be a key factor. Also
differentiation factorsonline game were social factor, scalability, reliability. Unlike the previous
studies which have been focused on online games, this study offers the guideline of the decision making for
the business success in the mobile game development and the sourcing, the most important steps in
publishing business.

There are general surveys on factors related to Leadership. However, less is known about the relationships
between Leadership, game using pattern, psychology factor. This study sought to clarify several of these
relationships. Using dataa survey of 1800 adolescent game users in South Korea, we conducted a
structure equation modeling to explore the association between psychological factor(Extraversion, Social
Intelligence, Self Esteem, Self Control), game using pattern(Game Time, Online Community, Game Norm,
Game Efficacy, Game Leadership) and demographic variables(Age and Gender). Results showed that
Extraversion, Social Intelligence, Self Esteem, Self Control(psychological factor), Game Leadership(game
using pattern) Use increase Leadership. while Game Time(psychological factor) decrease Leadership. And
Game Time, Online Community, Game Norm, Game Efficacy(game using pattern), Social
Intelligence(psychological factor) Use increase Game Leadership. The implications of these results are
discussed.

In this paper, we propose a method to automatically generate a height map image that can be useful for
creating 2.5D clip. To this end, we used a Viola - Jones algorithm that segments eyes, nose and mouth of
the image and analyzed the characteristics of each to derive the height value that is used for producing a
final height map . Finally, we can apply the height map to create photo-realistic images that can be easily
reproduced for synthesizing 2.5D animation in Adobe. To verify the proposed method, we have carried out
a user study between 2.5D movies clips which are proposed our automatic method and a manually
generated method.

Since the invention of Oculus, consumers have experienced high level of immersion and the sense
of reality at lower cost. It greatly increased virtual reality contents, and horror games are being
loved as well. In this study, a brain-wave analysis was used to investigate the impact of hostile
s on the player's immersion, in a horror game where the sense of immersion is maximized
using an Oculus Rift, a type of Head-Mounted Display(HMD) equipment. Paired t-test was
conducted in order to verify if the difference of the immersion level between two games is
meaningful. The result was that the difference of attention was statistically meaningful, whereas
that of meditation was not. Also, experiments were performed to investigate the correlation
between the moving speed of hostile s and the player's immersion.

The genetic algorithm (GA), one of the artificial intelligence (AI), is developed based on Darwin's theory of
evolution, i.e., the mating of randomly selected s. If more optimal solution is generated, then it is
better to repeat the process of setting the optimum value. In this paper, the method of background music
using the genetic algorithm is exploited when the computer game is executed each time. As a result, it has
created several music that can be used in the actual game, and it could be confirmed that the other music
that is created is different music when performed each time.

This study attempts to analyze the characteristics of parent's perception types of online game and suggest
personalized intervention strategies for improving parents' perception of online games. The data was
collected through the online survey345 parents. First, the parent's perception types of online game
were classified as 4 types through online game perception scale. Second, the characteristics of parent's
perception types of online game were analyzed by integrating the results of this research and previous
study. As a result, each type of perceptions has differences in the criteria of positive-negative perception of
online games, the attitude and reaction to children’s gaming, game familarity, Internet literacy of parents
and etc. Third, based on the characteristics of perception types of online game, we suggest intervention
strategies for improving parents' perception of online games. This study holds its significance in suggesting
the personalized intervention strategies based on the characteristics of perception types of online game.

Legally item trading is prohibited, but in fact has been made. Transactions between individuals can be a
problem with the reliability of the transaction. Game item sales between individuals than through the
intermediary site is due to legal vulnerable. Game operators may prohibit item trading through the terms
and conditions. Because the interrupt transaction item game stable operation. The point at which conflict
gamers and game operators. Reliability of trading, is time to review the policy on such items secured
transactions tax. The game operators to review the legal way to providing a system for mediating in the
game.

For the 3D game visual effects, the deferred rendering can only consider only the scene image resolution
regardless of the scene complexity. Therefore, it is effective in processing realistic visual effects using
many geometric buffers as multiple render targets. This paper uses the deferred rendering for the 3D game
visual effects such as dynamic lights, specular, shadow, motion blur, and water shading. The 3D game
supporting deferred rendering is developed to evaluate various 3D rendering effects with variation of the
screen resolution in terms of the rendering speed and PSNR image quality. The performance results show
that the rendering speed of the 3D visual effect techniques with 1280x960 resolution is average 56.0%
better than that with 640x480 resolution. Also, the average PSNR is getting better as the screen resolution
gets higher. The PSNR of the 3D visual effect techniques with 1152x864 resolution is average 30.9% better
than that with 640x480 resolution.