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가상밴드 K/DA에 대한 사용자 제작 콘텐츠(UCC) 특성
한저,이현석 한국멀티미디어학회 2020 멀티미디어학회논문지 Vol.23 No.1
In November 2018, virtual pop band K/DA, with the use of holograms and actual K-pop girl group members, performed its debut album titled "POP/STARS" at the opening ceremony of the League of Legends S8 final, hosted by Riot Games. The fan culture that exists for real singers adapts itself to virtual bands, and K/DA, consisting of virtual characters, encouraging the production of user created content (UCC). However, this form of UCC is different from the most common one, meaning that this type of band generates another way of consuming content. Therefore, this study examines how K/DA’s digital characters are transformed and reproduced by UCC and how the original producers’ content differs from them. Firstly, the development of this study considers the open characteristics of UCC, such as user type, created motivation, created process, content type and sharing method. In the second part, the virtual idol Hatsune Miku and virtual band Pentakill will be analysed to understand UCC. Thirdly, K/DA will be analyzed as a case study based on three factors: created motivation, content type and sharing method. In this manner, this study aims to explain how UCC for virtual bands reproduce and consume original content and expand their commercial value.
A Spectral Correlation Based Detection Method for Spectrum Sensing in Cognitive Radio
한저,송정익,손성환,김재명,Han Ning,Song Jeong-Ig,Sohn Sung-Hwan,Kim Jae-Moung The Korea Institute of Information and Commucation 2006 韓國通信學會論文誌 Vol.31 No.7C
Cognitive radio, which is designed to dynamically adapt its transmission to the environments, is believed to be one of the fundamental techniques for future spectrum utilization. As the first step of cognitive radio, spectrum sensing is treated as the most important technique, through which cognition is well explained. In this paper, we propose a spectral correlation based detection method for spectrum sensing. An unlicensed secondary user system operating in TV broadcast bands is taken as an example. Based on the cyclostationarity of communication signals, spectral correlation function is used to minimize the effect of random noise and interference. Energy measurement and peak detection based criteria are proposed. Simulation results show that the proposed detection method outperforms the energy detection and is more suitable for spectrum sensing in cognitive radios.
중국 애니메이션 속 경극 검보의 의미생성구조에 대한 기호학적 분석
한저(Han Zhe),이용설(Yong Seol Lee),이현석(Hyun-Seok Lee) 한국정보통신학회 2021 한국정보통신학회 여성 ICT 학술대회 논문집 Vol.2021 No.8
근현대에는 중국 특색의 민족문화가 내재된 예술성 높은 애니메이션 작품들이 다수 제작되었다. 이러한 작품 중 중국 전통 경극을 시각적·상징적으로 차용한 애니메이션을 들 수 있는데, 배우의 얼굴에 직접 그린 검보의 요소가 애니메이션 작품 속 캐릭터의 개성과 내재된 의미를 외연적으로 잘 표현하고 있다. 이는, 오랜 시간 정형화되어 온 검보의 이미지와 의미를 통해 관객들은 등장 배우의 개성과 역할을 바로 인지할 수 있기 때문이다. 중국 경극 검보는 독특한 기호체계를 형성하고 있으며, 이는 애니메이션 작품을 통해 중국의 사회문화적 의미를 내재하고 있다. 이에 ,본 연구는 문헌연구와 사례연구를 통해 롤랑 바르트의 문화 기호학 이론, 중국 경극 검보의 기호적 특징 및 중국 애니메이션의 발전 특성 그리고 애니메이션에서 검보의 의미생성구조에 대한 사례를 중심으로 살펴보고자 한다. In modern history, a lot of high artistic animation works including Chinese characteristic national culture. Among these works, animation that borrows traditional Chinese opera in a visual and symbolic way can cited. The element of the gumbo drawn directly on the actor’s face expresses personality and intrinsic meaning of the character very well in the animation. This is because audiences can immediately perceive the personality and role of the emerging actor through the image and meaning Gumbo which has been formulated for a long time. Chinese pecking opera ‘Gumbo’ has formed a unique symbol system, which embodies social-cultural through animation works. This study focuses on the cultural semiotics theory of Roland Barthol, the symbolic characteristic of Chinese pecking opera ‘Gumbo’, the developmental characteristic of Chinese animation and the case of the generative structure of Gumbo in animation through literature study and case study.
송정익,한저,손성환,이경탁,김재명,Song, Jeong-Ik,Han, Jeo,Son, Seong-Hwan,Lee, Gyeong-Tak,Kim, Jae-Myeong 한국위성정보통신학회 2006 한국위성정보통신학회논문지 Vol.1 No.1
무선인지기술은 환경에 능동적으로 적응하여 스펙트럼 이용을 효율적으로 할 수 있도록 하는 기술이다. 무선인지 기술의 가장 중요한 첫 단계는 센싱 부분으로서 본 논문에서는 주파수 상관관계를 이용한 방법을 제안하였다. 통신신호의 주기적인 특성을 기반으로 잡음과 간섭의 효과를 최소화하기 위해 주파수 상관함수를 사용하였다. 이미 알려진 에너지 측정 방법의 동작특성을 보이고 시뮬레이션을 통하여 제안된 측정 방법과 기존의 방법을 비교하여 무선인지환경을 이용한 스펙트럼 센싱의 효율성을 보인다. Cognitive radio, which is designed to dynamically adapt its transmission to its environments is believed to be one of the fundamental techniques for the future spectrum utilization. As the first step of cognitive radio, spectrum sensing is treated as the most important technique. In this paper, we propose a spectral correlation based detection method for spectrum sensing. Based on the cyclostationarity of communication signals, spectral correlation function is used to minimize the effect of random noise and interference. The ROC performance of conventional energy detection is shown. Simulation result show that the proposed detection method outperforms the energy detection and more suitable for spectrum sensing in cognitive radios.
An Enhanced Energy Detector for WRAN Systems Using Maximum-to-Mean Power Ratio
정관파,한저,손성환,김재명,Zheng, Guanbo,Han, Ning,Sohn, Sung-Hwan,Kim, Jae-Moung The Korea Institute of Information and Commucation 2008 韓國通信學會論文誌 Vol.33 No.4A
Spectrum sensing is the key challenge in implementing cognitive radio system, which enables unlicensed users to identify "white holes" in the spectrum allocated to primary users and utilize them efficiently. Recent studies have proposed three major sensing methods for WRAN systems, including matched filter, energy and feature detector. However, there are some drawbacks along with them. In this paper, we propose an enhanced energy detector that extends the ability of conventional one, which can differentiate the primary users from each other as well as the noise with different maximum-to-mean power ratio. Furthermore, a novel structure of cognitive radio detector employing the proposed algorithm is also analyzed to implement spectrum sensing. The simulation result shows that our proposed scheme performs well in the individual sensing environment and can satisfy the requirement with high detection probability.