• 한국지능시스템학회:학술대회논문집
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• 한국퍼지및지능시스템학회 2003년도 ISIS 2003
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• pp.272-275
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• 2003

This paper presents the role and its function of Tool server. MPEG-21 means multimedia framework for delivery and consumption of multimedia which is being discussed in ISO/IEC 21000. A view of MPEC-21 aims to define multimedia framework to enable transparent use of multimedia resource across a wide range of networks and devices used by different communities. MPEG-21 will enable all-electronic creation delivery and trade of digital multimedia content and transparent usage of various content types on network device. Therefore, we can provide access to information and services from almost anywhere at anytime with various terminals and networks. In order to support multimedia delivery chain that contains content creation, production, delivery and consumption, we need many standards(elements) for identify, describe, manage and protect the content. Thus, we define Digital Item Player(DIP), Digital Item Adaptation(DIA) server and Tool server as primary objects of MPEG-21 multimedia framework. DIP provides a function which creates and consumes Digital Item(DI) as a kind of a digital object by user. A DI contains both media resources and metadata including rights information. DIA server deals with the usage environment description schema of the user characteristics, terminal and network characteristics and natural environments. DIA server adapts the original DI to the usage environment description sent from the terminal and transmits the adapted DI to the terminal. Tool server searches for a tool requested from DIP or DIA and downloads the best tool to DIP or DIA server. In this paper, we present how Tool sewer is organized and is used among 2 primary objects. The paper is structured as followings: Section 1 briefly describes why MPEG-21 is needed and what MPEG-21 wants. We see requirement that tool server must equip functionally in section 2. The proposed tool server,its structure and its functionality are presented in section 3. Section 4 explains a scenario that tool server transmits tool to DIP and shows the experimental result. The paper concludes in section 5.

• 한국지역사회생활과학회지
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• 제11권2호
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• pp.61-76
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• 2000

Relationships between consumer socialization factors and socioeconomic characteristics and consumptionism propensity were examined using a sample of 529 middle school students in Inchon, Korea. OL.S regression was utilized. ＇Communication with friend＇ and ＇acceptance of mass media＇ had significant positive effects on ＇ego-identity developing and differentiating by uniqueness＇ and ＇other oriented and appearance pursuing＇ propensity, whereas had a significant negative effect on ＇consumption orientation＇, ＇Communication with mother＇ had a significant positive effect on ＇consumption orientation＇. Boys where significantly higher than girls in ＇ego-identity developing and differentiating by uniqueness＇ and girls were significantly higher than boys in ＇other oriented and appearance pursuing＇. ＇Income had significant positive effects on ego-identity developing and differentiating by uniqueness＇.

• 경영정보학연구
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• 제25권3호
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• pp.1-26
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• 2023

본 연구는 Jackson and Farzaneh(2012)이 제시한 정보과잉의 세 가지 요소, 즉 시간, 기술, 사회적 네트워크로 구성된 이론적 모델을 뉴스 소비 행위 맥락에서 경험적으로 검증했다. 1,166명의 전국 샘플을 토대로 분석한 결과, 정보과잉 지각과 사회적 네트워크 크기와 다양성은 적극적이고 소극적인 뉴스 소비와 모두 정적인 관련이 있었다. 또한 개인적으로 다양한 수준의 인지적 한계점, 즉 티핑포인트의 존재를 암시하는 연구결과를 토대로, 정보과잉에도 불구하고 개인의 티핑포인트에 따라 정보처리가 중단되지 않고 정보이용을 지속할 수 있다는 점을 확인했다. 특히, 본 연구가 주목한 뉴스 소비자들의 경우 정보과잉 지각에도 불구하고 뉴스의 사실성을 판별하기 위해서 지속적으로 정보를 검색하고 받고자 하는 의도가 높기 때문에 개인의 티핑포인트에 따라 전략적인 뉴스 소비를 채택하는 것으로 보인다. 이러한 결과를 토대로 경영정보시스템과 저널리즘 차원에서 실무적 함의를 논의했다.

• 방송공학회논문지
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• 제24권6호
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• pp.956-964
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• 2019

유투브나 트위치와 같은 개인 미디어 시대를 맞아, 개인의 미디어 컨텐츠 제작과 소비가 간편해졌다. 플랫폼 서비스를 통한 엄청난 양의 미디어 컨텐츠가 생성 소비되고 있다. 이와 관련하여 미디어 컨텐츠의 저작권에 대한 관심이 높아지고 있다. 특히, 음원의 경우 거의 모든 미디어 컨텐츠 제작에 있어 없어서는 안 될 중요 요소이다. 본 논문에서는 뮤직 컨텐츠에 대한 저작권을 확인하기 위해 음원과 그의 시그니쳐를 블록체인과 분산저장시스템을 활용하여 저장할 수 있는 방안을 제안한다. 음원의 오디오 시그니쳐 추출 결과를 블록체인 트랜잭션 데이터로 포함할 수 있는지의 가능성을 파악한다. 실험을 통해 음원과 그의 시그니쳐를 분산저장시스템에 저장했을 때의 입출력 속도를 비교 확인한다.

• 패션비즈니스
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• 제27권5호
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• pp.78-92
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• 2023

Fashion trends are actively disseminated through social media, which influences both their propagation and consumption. This study explored how users perceive subversive basic fashion in social media videos, by examining the associated concepts and characteristics. In addition, the factors contributing to the style's social media dissemination were identified and its distinctive features were analyzed. Through text mining analysis, 80 keywords were selected for semantic network and CONCOR analysis. TF-IDF and N-gram results indicate that subversive basic fashion involves transformative design techniques such as cutting or layering garments, emphasizing the body with thin fabrics, and creating bold visual effects. Topic modeling suggests that this fashion forms a subculture that resists mainstream norms, seeking individuality by creatively transforming the existing garments. CONCOR analysis categorized the style into six groups: forward-thinking unconventional fashion, bold and unique style, creative reworking, item utilization and combination, pursuit of easy and convenient fashion, and contemporary sensibility. Consumer actions, linked to social media, were shown to involve easily transforming and pursuing personalized styles. Furthermore, creating new styles through the existing clothing is seen as an economic and creative activity that fosters network formation and interaction. This study is significant as it addresses language expression limitations and subjectivity issues in fashion image analysis, revealing factors contributing to content reproduction through user-perceived design concepts and social media-conveyed fashion characteristics.

• 전기전자학회논문지
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• 제13권1호
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• pp.71-76
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• 2009

As one of the most important requirements for wireless sensor networks, prolonging network lifetime can be realized by minimizing energy consumption in cluster heads as well as sensor nodes. While most of the previous researches have focused on the energy of sensor nodes, we devote our attention to cluster heads because they are most dominant source of power consumption in the cluster-based sensor networks. Therefore, we seek to minimize energy consumption by minimizing the maximum(MINMAX) energy dissipation at each cluster heads. This work requires energy-efficient clustering of the sensor nodes while satisfying given energy constraints. In this paper, we present a constraint satisfaction modeling of cluster-based routing in a heterogeneous sensor networks because mixed integer programming cannot provide solutions to this MINMAX problem. Computational experiments show that substantial energy savings can be obtained with the MINMAX algorithm in comparison with a minimum total energy(MTE) strategy.

• 반도체디스플레이기술학회지
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• 제18권1호
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• pp.123-128
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• 2019

Currently mobile services are on the verge of full commercialization ahead of 5G mobile communication (5G). The first goal could be to preempt the 5G market through realistic media services utilizing VR (Virtual Reality) and AR (Augmented Reality) technologies that users can most easily experience. Basically this movement is based on the advanced development of smart devices and high quality graphics processing computing power of mobile application processors. Accordingly, the importance of mobile GPUs is emerging and the most concern issue becomes a model for predicting the power and performance for smooth operation of high quality mobile contents. In many cases, the performance of mobile GPUs has been introduced in terms of power consumption of mobile GPUs using dynamic voltage and frequency scaling and throttling functions for power consumption and heat management. This paper introduces several studies of mobile GPU performance prediction model with user-friendly methods not like conventional power centric performance prediction models.

• 복식문화연구
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• 제32권1호
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• pp.38-57
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• 2024

This study utilizes social big data to investigate the factors influencing the awareness, attitude, and behavior toward vegan fashion consumption among global and Korean consumers. Social media posts containing the keyword "vegan fashion" were gathered, and meaningful discourse patterns were identified using semantic network analysis and sentiment analysis. The study revealed that diverse factors guide the purchase of vegan fashion products within global consumer groups, while among Korean consumers, the predominant discourse involved the concepts of veganism and ethics, indicating a heightened awareness of vegan fashion. The research then delved into the factors underpinning awareness (comprehension of animal exploitation, environmental concerns, and alternative materials), attitudes (both positive and negative), and behaviors (exploration, rejection, advocacy, purchase decisions, recommendations, utilization, and disposal). Global consumers placed great significance on product-related information, whereas Korean consumers prioritized ethical integrity and reasonable pricing. In addition, environmental issues stemming from synthetic fibers emerged as a significant factor influencing the awareness, attitude, and behavior regarding vegan fashion consumption. Further, this study confirmed the potential presence of cultural disparities influencing overall awareness, attitude, and behavior concerning the acceptance of vegan fashion, and offers insights into vegan fashion marketing strategies tailored to specific cultures, aiming to provide vegan fashion companies and brands with a deeper understanding of their consumer base.

• 대한기계학회논문집B
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• 제21권12호
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• pp.1668-1678
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• 1997

Numerical analyses were performed to investigate the characteristics of regenerator in oscillating flow by using moving boundary method and Darcy model. In this work, periodic adiabatic boundary condition was suggested as the boundary condition of adiabatic part so that the effects of the thermal inertia of the wall could be considered. In carrying out numerical analyses, two models were applied and compared. One called isotropic model has the same thermal conductivity in radial and axial directions within a porous media. The other called aeolotropic model has different conductivity in each directions. Isotropic model could not show the advantage of energy reduction which needs to maintain constant wall temperature difference between heater and cooler. But aeolotropic model could simulate the reduction of energy consumption.

• 한국균학회지
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• 제49권4호
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• pp.433-440
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• 2021

The fungal genus Trametes is globally distributed and comprises various wood-decay species, including the well-known medicinal mushroom Trametes versicolor, a popular remedy in traditional Asian medicine. Trametes species produce antioxidants, which have a wide range of health benefits. The pressent study evaluated seven indigenous Trametes species from Korea, which were cultivated in three different media (dextrose-yeast extract, DY; malt extract-yeast extract, MY; malt extract broth, MEB) and tested for antioxidant activity using the 2,2-diphenyl-1-picrylhydrazyl and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) assays. We found that the medium consumption rate did not significantly differ between the media and among the strains (72-76%). However, the T. versicolor strains had a relatively low consumption rate (14-65%). The 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonate) (ABTS) tests demonstrated that culture filtrates of T. cf. junipericola, T. orientalis, T. suaveolens, and T. versicolor possessed antioxidant activity against damage from free radicals. In particular, T. cf. junipericola (DY) and T. versicolor (MY) had >80% activity in the DPPH and ABTS assays, compared with that of the positive control (ascorbic acid). Thus, our study identified promising candidates with substantial antioxidant activity among the indigenous strains of Trametes spp. from Korea.