• Proceedings of the Korea Information Processing Society Conference
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• 2005.05a
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• pp.899-902
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• 2005

언제, 어디서, 누구나 대용량 네트워크를 사용할 수 있는 유비쿼터스(ubiquitous) 시대가 다가오면서, 카메라가 장착되어 있고 무선 통신이 가능한 PDA, 웨어러블(wearable) 컴퓨터와 같은 휴대용장치가 가까운 미래에는 일상의 한 부분이 될 것이다. 이런 상황을 반영하듯, 휴대용 장치를 이용하여 실감형 게임(augmented game)을 수행하는 다양한 연구가 진행되어 왔다. 기존의 실감형 게임들은 전통적인 ‘backpack’ 시스템을 이용하거나 패턴마커(pattern marker)를 이용하였다. ‘backpack’ 시스템은 비싸고, 거추장스러우며, 사용하기 불편한 단점을 가지고 있으며, 패턴마커를 이용하면 미리 정한 장소에서만 게임을 즐길 수 있는 단점을 가지고 있다. 본 논문에서는 Flying Cake이라는 실감형 게임을 소개하며, 거추장스러운 장비 대신, 가볍고 휴대 가능한 PDA를 이용하여 게임을 수행하며, 실제 세계에서 가상의 물체를 접목할 위치를 지정하기 위해, 미리 정해져 있는 패턴마커 대신 얼굴 영역을 이용한다. Flying Cake은 연산자원이 부족한 PDA에서 실시간으로 얼굴 영역을 찾기 위해 스킨칼라(skin-color) 모델과 CAMShift 알고리즘을 이용하며, PDA상에서 카메라를 이용하여 실제 세계와 가상의 물체 사이의 상호작용을 제공하는 새로운 게임 패러다임(paradigm)을 통해 사용자에게 새로운 즐거움을 제공한다.

• Journal of Korea Game Society
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• v.21 no.2
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• pp.79-88
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• 2021

Particle and noise are effectively used to implement unspecific VFX like an explosion, magic. Particle can create freely but, The more usage, the higher CPU/GPU usage. This paper using polygon mesh that is hard to change but consumes fixed resources to overcome the demerit of particle and reduce CPU/GPU usage. Also, using shader, apply noise texture that is suitable unspecific pattern to vertex and surface texture mapping of polygon mesh for implement VFX in unity. As a result of experiment, shader applied sphere polygon mesh show 2~4ms CPU, 1~2ms GPU usage in profiler. Also It has been shown that shader can be used to implement unspecific VFX.

• Journal of Korea Multimedia Society
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• v.12 no.8
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• pp.1128-1141
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• 2009

Graphical expressions are continuously improving, spurred by the astonishing growth of the game technology industry. Despite such improvements, users are still demanding a more natural gaming environment and true reflections of human emotions. In real life, people can read a person's moods from facial color and expression. Hence, interactive facial colors in game characters provide a deeper level of reality. In this paper we propose a facial color adaptive technique, which is a combination of an emotional model based on human emotion theory, emotional expression pattern using colors of animation contents, and emotional reaction speed function based on human personality theory, as opposed to past methods that expressed emotion through blood flow, pulse, or skin temperature. Experiments show this of expression of the Facial Color Model based on facial color adoptive technique and expression of the animation contents is effective in conveying character emotions. Moreover, the proposed Facial Color Adaptive Technique can be applied not only to 2D games, but to 3D games as well.

• The Journal of the Convergence on Culture Technology
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• v.9 no.6
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• pp.181-186
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• 2023

In this study, it argues that adolescents lack awareness of the Fourth Industrial Revolution and lack of job expression in games, and suggests promising future vocational education through games. Various previous studies reviewed job education, limitations, and educational effects of online games, and studied job expression in the game from the perspective of future promising jobs, and 45 out of 200 jobs appeared in mobile simulation games. It was found that 'content creators', 'drone experts', and 'software developers' were expressed as promising jobs in the future. Although it has a limitation of investigating only the main character's job, it is meaningful that it pointed out that the current game does not sufficiently cover the functional aspects of vocational education for future promising jobs and suggested the need to reflect future promising jobs.

• Journal of Digital Convergence
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• v.15 no.6
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• pp.229-236
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• 2017

An efficient frequent pattern algorithm is essential for mining association rules as well as many other mining tasks for convergence with its application spread over a very broad spectrum. Models for mining pattern have been proposed using a FP-tree for storing compressed information about frequent patterns. In this paper, we propose a centroid frequent pattern growth algorithm which we called "CAWFP-Growth" that enhances he FP-Growth algorithm by making the center of weights and frequencies for the itemsets. Because the conventional constraint of maximum weighted support is not necessary to maintain the downward closure property, it is more likely to reduce the search time and the information loss of the frequent patterns. The experimental results show that the proposed algorithm achieves better performance than other algorithms without scarifying the accuracy and increasing the processing time via the centroid of the items. The MapReduce framework model is provided to handle large amounts of data via a pseudo-distributed computing environment. In addition, the modeling of the proposed algorithm is required in the fully distributed mode.

• The KIPS Transactions:PartA
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• v.8A no.4
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• pp.509-516
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• 2001

As results of many genome projects, genomic sequences of many organisms are revealed. Various methods such as global alignment, local alignment are used to analyze the sequences of the organisms, and k -mer analysis is one of the methods for analyzing the genomic sequences. The k -mer analysis explores the frequencies of all k-mers or the symmetry of them where the k -mer is the sequenced base with the length of k. However, existing on-memory algorithms are not applicable to the k -mer analysis because a whole genomic sequence is usually a large text. Therefore, efficient data structures and algorithms are needed. String B-tree is a good data structure that supports external memory and fits into pattern matching. In this paper, we improve the string B-tree in order to efficiently apply the data structure to k -mer analysis, and the results of k -mer analysis for C. elegans and other 30 genomic sequences are shown. We present a visualization system which enables users to investigate the distribution and symmetry of the frequencies of all k -mers using CGR (Chaotic Game Representation). We also describe the method to find the signature which is the part of the sequence that is similar to the whole genomic sequence.

• Survey Research
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• v.6 no.2
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• pp.33-50
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• 2005

The purpose of this study was to investigate whether Korean children's being addiction to computer game had an effect on physical health(headache, insomnia, indigestion, cardivascular). We considered both direct effects of that addiction and indirect effects which caused an negative emotion(anxiety). For this study, we collected data from 800 students of grades and 6 in Daejeon, Korea. Among them, we analyzed the data of 572 students[408 boys(71.3%) and 164 girls(28.7%) respectively] who had played computer games for a long period of time(two years or more). Reliability of the scale used on this study was a proper level by $.64{\sim}.91$ and we operated an analysis of structural equation pattern to make relationships of variable causes clear. As a result of examining an index of fitness of each model, it was proved for the fitness of every model(all GFI >.931, all CFI >.939, all NNFI >.929, all RMSEA <.046) to be acceptable. Not only the computer game addiction affected(all ps<.001) directly on physical symptoms(headache ${\beta}$=.211, insomnia ${\beta}$=.289, indigestion ${\beta}$ =.214, cardivascular ${\beta}$=.349), but also it affected(${\beta}$=.458, p<.001) on anxiety. In addition, the effect of anxiety on physical symptoms(headache ${\beta}$=.419, insomnia ${\beta}$=.375, indigestion ${\beta}$=.498, cardivascular ${\beta}$=.328) was significant. As a result of yielding the indirect effects of computer game abuse mediated by anxiety, headache was measured up ${\beta}$=.192, insomnia ${\beta}$=.172, indigestion ${\beta}$ =.228 and cardivascular ${\beta}$=.151. The computer game addiction caused 21% of anxiety and this mediate model proved that the computer game addiction caused 30% of headache, 32% of insomnia, 39% of indigestion, and 34% of cardivascular symptom. As a result of this study, the computer game addiction has a negative effect on physical health both directly and indirectly. Especially, cardivascular was influenced most extremely, then insomnia, indigestion, and headache in order. The implications gleaned from this study were discussed with considerations for future study and practical aspect.

• Journal of the Korean Society of Costume
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• v.56 no.5 s.104
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• pp.29-43
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• 2006

The purpose of this study is to examine a unique characteristic of the colors of the costumes in Korean basic culture in the aim of seeking the characteristics and the conceptual meanings of colors found in the majority’s culture. The scope of the basic culture was divided into folk belief, folk game and folk play. Within these limits, the colors of the dress, accessories, instruments were extracted by comparing with the naked eye in NCS Color System. For the analysis of hue and tone, the secondary dimensional analysis using NCS color system and the three-dimensional analysis using the software, COLOR 3D Version 2.0, were done. The result of this investigation is that the colors of the costume in the Korean basic culture are white, gray and black of achromatic color and yellow, yellowish red and purplish blue. This confirms that the colors based on Five-elements color are becoming the basis too basic culture. And Arche-pattern, which is a characteristic commonly found in the Korean traditional society, was shown as a characteristic of color. The colors of the costumes in Korean basic culture are uniquely adopted by the Korean civilians according to their religious and philosophical living standard. This study is meaningful in seeking a root for the formation of their unique color culture.

• Korean Institute of Interior Design Journal
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• v.14 no.1
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• pp.81-90
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• 2005

This study was intended to suggest the design guidelines of digital home on the basis of digital-related human behavior. In order to achieve this, what and how often internet was used in the home, how living pattern and space usage was changing according to digitalization were examined and lastly, the design guidelines of digital home based on these findings were suggested. The subjects were 400 housewives who lived In 85m'-sized housing unit of the new apartment complex in Busan. They were average age of 38 and their eldest children were in the stage of elementary schooling or preschooling. Many of them had relatively high educational level and middle income level. The results of the study were as follows; 1) The respondents used internet more frequently for information searching, children's education, and Internet shopping. Therefore, it would be desirable to divide zoning of housing unit into space for routine activities, space for working, and for cultural activities. 2) Digitalization changed human living pattern like follows; it reduced time of shopping, information searching, banking, and going out. Also, it increased time of spending alone, watching movie, and playing game. Therefore, digital home should be designed to facilitate social Interaction between family members, cultural and recreational activities, and indoor or outdoor exercise within each housing unit or in apartment complex.

• 한국HCI학회:학술대회논문집
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• 2007.02b
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• pp.693-704
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• 2007

지금까지 사이버문화에 대한 연구는 해당 문화의 가장 큰 특성 중인 익명성과 그것이 개별 이용자들의 정체성에 미치는 영향에 대한 많은 관심이 있어왔다. 최근 주목을 받고 있는 싸이월드나 블로그 등 CMC환경에서 매체가 일반적으로 여성의 라이프스타일 및 여성성과 연관되어 정체성의 구성에 영향을 미치게 되며, 이러한 이용 형태를 마케팅과 접목하여 높은 여성 참여와 구매력을 이끌어내고 있다. 반면 온라인게임은 남성 중심의 매체로써의 특징을 가지고 있으며, 상대적으로 여성의 온라인게임 이용 행태 분석 및 마케팅 전략 연구가 미흡하였다. 온라인게임에서 여성 이용자의 참여나 구매력을 이끌어 내기 위해서는 우선적으로 남성 중심적 매체에서 여성 온라인게임 유저의 이용 행태 분석 이 선행되어야 하며, 이를 통하여 여성의 온라인게임 소비 패턴과 특성을 파악하고, 나아가 고객 충성도, 구매력과의 관련성 속에서 마케팅적 시사점을 도출하여야 할 것이다. 본 연구는 온라인게임 여성 유저의 심층 인터뷰를 통하여 우선적으로 연령별 게임 이용 패턴 - 게임이용 장소, 초기 진입 방식, 커뮤니티 활동, 아이템 구매 형태 등 - 에 대해 알아보고, 다음으로 여성 유저의 게임 플레이 방식으로 게임 내 캐릭터의 전유 방식(몰입)과 게임 플레이 스타일을 고찰하고자 한다. 이때 여성의 온라인게임 이용 방식이 남성적 매체라는 구조적 공간 내에서 여성의 성적 특성이 온라인게임 소비 행태에 어떠한 영향을 미치며, 또한 여성 유저의 이용 방식에 따라 고객 충성도에 미치는 효과에 대해 알아보도록 한다.