• Title, Summary, Keyword: media frame

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An Improved Contention Access Mechanism for FPRP to Increase Throughput

  • Yang, Qi;Zhuang, Yuxiang;Shi, Jianghong
    • ETRI Journal
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    • v.35 no.1
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    • pp.58-68
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    • 2013
  • Five-phase reservation protocol (FPRP) is a contention-based media access control protocol for wireless ad hoc networks. FPRP uses a five-phase reservation process to establish slot assignments based on time division multiple access. It allows a node to reserve only one slot in an information frame. Once a node has reserved a slot, it will cease contending for other slots. As a result, there may be less contending nodes in the remaining slots, so the time slots in an information frame are not fully used by FPRP. To improve time slot utilization, this paper proposes an improved pseudo-Bayesian algorithm, based on which an improved contention access mechanism for FPRP is proposed, in which nodes are allowed to contend for more than one slot in a reservation frame according to a certain probability/priority. Simulation results indicate that the proposed mechanism performs better than FPRP in time slot utilization and hence the network throughput under various scenarios.

The Effect of Gain-Message Frame on Exercise Interest and User Experience in the Mobile App Game for Fitness (모바일 피트니스 앱 게임에서 이득 메시지 프레임이 운동 관심도와 사용자 경험에 미치는 영향)

  • Choe, Min-Ji;Noh, Ghee-Young
    • Journal of the Korean Society for Computer Game
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    • v.30 no.2
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    • pp.69-76
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    • 2017
  • This study was conducted to analyze the effect of message frame on Exercise Interest and User Experience including Fitness App Fun, Fitness App Satisfaction, and Fitness App Use Intention in the mobile fitness app game. 'Enjoy Your Fitness', a fitness app game developed by Healthcare Media Research Institute, was used for this study and Repeated Measure Design and Playtest methodologies were used for the experiment. The results showed that the persuasive effect of gain messages were higher than loss messages in all factors. This results implies that exercise, as a preventive health behavior, can be promoted more effectively when messages are presented in the frame of gain message rather than loss message. Therefore, messages in the fitness app game need to be presented by emphasizing the positive outcome and benefit of exercise.

Autostereoscopic Time Multiplexed 2D/3D Display

  • Kim, Dae-Sik;Shestak, Sergey;Cha, Kyung-Hoon;Koo, Jae-Phil;Hwang, Seon-Deok
    • 한국정보디스플레이학회:학술대회논문집
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    • pp.1803-1806
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    • 2007
  • We have developed a 2D/3D time sequential LCD autostereoscopic display, which is capable of simultaneous displaying 2D and 3D graphics at a frame rate up to 120 Hz. Left and right sets of viewing zones are formed by a combination of a fast LC shutter and a lenticular lens array.

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Analysis of Media Frames of Moon Jae-in Care policy (문재인 케어 정책에 대한 미디어 프레임 분석)

  • Lee, Geun-Chan
    • The Korean Journal of Health Service Management
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    • v.12 no.3
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    • pp.13-26
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    • 2018
  • Objectives: This study investigated how Korean daily newspapers frame the present government's health insurance coverage expansion policy, Moon Jae-in Care. Methods: A contents analysis was conducted to construct news frames represented in the four Korean daily newspapers' editorials and columns on Moon Jae-in Care during from April 2017 to April 2018. News text was classified into three different layers of frames: expressive element, narrative structure, and implied values. Results: The analysis revealed that the frequency of narrative frames was as follows: health system improvement (20.8%), public burden (14.6%), opposition by doctors (14.6%), and populism (12.5%). The financial sustainability accounted for 41.7% of the value frame, followed by procedural legitimation (18.8%), and coverage expansion (16.7%). The results also revealed that reported frames were different among newspapers: Chosun Ilbo tended to report in a negative tone, while Hankyoreh shinmun and Kyunghyang shinmun used a positive tone. Conclusions: This finding suggests that there are salient framings in reports on Moon Jae-in Care. Based on the results, the government needs to present a detailed financing plan on Moon Jae-in Care in detail. I discussed another implication of media frames results.

A Study on the characteristics of digital-media application on surface - An analysis based upon the related characteristics of installation art - (현대건축 표면에 적용된 디지털미디어의 표현 특성 연구 - 설치미술적 특징에 기초한 분석 -)

  • Kim, Jin-Young;Lee, Hyun-Soo
    • Korean Institute of Interior Design Journal
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    • v.19 no.3
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    • pp.38-45
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    • 2010
  • Surface has been an important issue in contemporary architecture. That originates in structural freedom of surface since the end of modern architecture and the current stream of surface becoming an identity of building. Development of digital-media has brought a great change to our society in general. Digital-media is characterized by use of digital-information and interactive communication. Digital-media has been applied on surface in contemporary architecture lately. It is a purpose of the study to analyze the characteristics of digital-media application on surface based on the related characteristics of installation art. The categories and the contents for the frame of case analysis were arranged through document research. The foreign and domestic cases of digital-media application were analyzed based on the frame of analysis. Digital-media, which is installed on surface, is interacted with human and surroundings. It enhances emotional communication between human and architecture. Surface is not any more a simple fixture but an interactive creature. It makes surface more dynamically and fluidly that the course of light and human movement affect on digital-media. Surface itself is also turned into an object of art. It reflects the interweaving characteristics between contemporary architecture and installation art. It was analyzed through the study that emotional level of people is the important issue shared in digital-media application on surface and installation art. The complementary relationship between surface of contemporary architecture and installation art can be manipulated by the application of digital-media on surface.

The effect of media modality and the valence of risk messages on affective risk perception and behavioral intention (미디어 형식과 위험 메시지 구성이 감정적 위험인식과 행위의도에 미치는 영향)

  • Lee, Jae-Shin
    • Korean Journal of Cognitive Science
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    • v.23 no.4
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    • pp.457-485
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    • 2012
  • The current study explores how media modality and message frame interact to form individuals' affective risk perception and behavioral intention. Specifically, participants were exposed to positive and negative messages on irradiated foods in text, audio, and audio/video formats and their affective risk perception and purchase intention were measured. Results indicate that individuals' affective risk perception and purchase intention were influenced by media modality and message frame. The significant interaction effects between the two variables were also observed. The results indicate that the appropriate media modality should be carefully selected based on the message content for effective risk communication.

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Korean Media's News Coverage of Japan's position on Her Past History Problems Under Abe Shinzo's Cabinet Dynamic Process of News Framing (아베 내각의 일본 과거사 인식 문제에 대한 한국 언론의 시각 보수신문과 진보신문에 나타난 보도 프레임의 역동적 과정)

  • Lee, Wan Soo;Bae, Jae Young;Park, Kyung Woo
    • Korean journal of communication and information
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    • v.79
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    • pp.104-139
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    • 2016
  • This study investigated how Korean media covered Japan's position on her past history issues proposed by Abe' Shinzo's cabinet. The researchers adopted Entman's analytical tools for frame analysis and the concept of "frame changing" proposed by Chi and McCombs. The analysis rendered several propositions. First of all, the Korean media's coverage on Japan's past history issues focused heavily on the current conflict among two nations rather than constructing a futuristic viewpoint based on a thorough discussion on the historical background of the topic. In addition, it emphasized that the conflict should be resolved by political negotiations between the two governments. Secondly, the news coverages depicted "comfort women" issues as the prime element of the conflict, describing Abe's cabinet as the major inducer of the conflict. Ideological and political divisions among Korean media did not significantly influence on how they frame Japan's past history issues. In general, Korean media took the stance of ethnocentric "patriotic journalism," advocating Korean government's position and covering the emotional reactions from Korean public instead of providing through and through objective news coverage on Japan's past history issues.

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An Adaptive Multimedia Synchronization Scheme for Media Stream Delivery in Multimedia Communication (멀티미디어 통신에서 미디어스트림 전송을 위한 적응형 멀티미디어 동기화 기법)

  • Lee, Gi-Sung
    • The KIPS Transactions:PartC
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    • v.9C no.6
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    • pp.953-960
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    • 2002
  • Rel-time application programs have constraints which need to be met between media-data. It is client-leading synchronization that is absorbing variable transmission delay time and that is synchronizing by feedback control and palyout control. It is the important factor for playback rate and QoS if the buffer level is normal or not. This paper, The method of maintenance buffer normal state transmits in multimedia server by appling feedback of filtering function. And synchronization method is processing adaptive playout time for smooth presentation without cut-off while media frame is skip. When audio frame which is master media is in upper threshold buffer level we decrease play out time gradually, low threshold buffer level increase it slowly.

Design and Implementation of MAC Protocol for Wireless LAN (무선 LAN MAC 계층 설계 및 구현)

  • 김용권;기장근;조현묵
    • Proceedings of the IEEK Conference
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    • pp.253-256
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    • 2001
  • This paper describes a high speed MAC(Media Access Control) function chip for IEEE 802.11 MAC layer protocol. The MAC chip has control registers and interrupt scheme for interface with CPU and deals with transmission/reception of data as a unit of frame. The developed MAC chip is composed of protocol control block, transmission block, and reception block which supports the BCF function in IEEE 802.11 specification. The test suite which is adopted in order to verify operation of the MAC chip includes various functions, such as RTS-CTS frame exchange procedure, correct IFS(Inter Frame Space)timing, access procedure, random backoff procedure, retransmission procedure, fragmented frame transmission/reception procedure, duplicate reception frame detection, NAV(Network Allocation Vector), reception error processing, broadcast frame transmission/reception procedure, beacon frame transmission/reception procedure, and transmission/reception FIEO operation. By using this technique, it is possible to reduce the load of CPU and firmware size in high speed wireless LAN system.

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Robust Video-Based Barcode Recognition via Online Sequential Filtering

  • Kim, Minyoung
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.14 no.1
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    • pp.8-16
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    • 2014
  • We consider the visual barcode recognition problem in a noisy video data setup. Unlike most existing single-frame recognizers that require considerable user effort to acquire clean, motionless and blur-free barcode signals, we eliminate such extra human efforts by proposing a robust video-based barcode recognition algorithm. We deal with a sequence of noisy blurred barcode image frames by posing it as an online filtering problem. In the proposed dynamic recognition model, at each frame we infer the blur level of the frame as well as the digit class label. In contrast to a frame-by-frame based approach with heuristic majority voting scheme, the class labels and frame-wise noise levels are propagated along the frame sequences in our model, and hence we exploit all cues from noisy frames that are potentially useful for predicting the barcode label in a probabilistically reasonable sense. We also suggest a visual barcode tracking approach that efficiently localizes barcode areas in video frames. The effectiveness of the proposed approaches is demonstrated empirically on both synthetic and real data setup.