• Title/Summary/Keyword: Multimedia Utilization

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Development of Edutainment Contents using the Multi-touch Table Top Display (멀티터치 테이블 탑 디스플레이를 활용한 에듀테인먼트 콘텐츠 구현)

  • Bak, Seon Hui;Lee, Jeong Bae;Kim, Eung Soo;Lee, Chang Jo
    • Journal of Korea Multimedia Society
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    • v.18 no.12
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    • pp.1569-1577
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    • 2015
  • Recently, the development of IT technology, utilization of smart devices 3-5-year-old infants Upon smart device penetration rate per household increases has also sharply increased. In this paper, the educational contents for kid are considered and implemented by reflecting this trend. Content that has been produced in this paper are based on learning theory of constructivism, was to be performed naturally learn the content of the table-top display of applying the NUI technology. Also, the content creation that can help you learn infants through experiments crafted tabletop display interface content, it is believed to be the basis for the improvement of usability.

Study on the Measurement-Based Packet Loss Rates Assuring for End-to-End Delay-Constrained Traffic Flow (지연 제한 트래픽 흐름에 대한 측정 기반 패킷 손실률 보장에 관한 연구)

  • Kim, Taejoon
    • Journal of Korea Multimedia Society
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    • v.20 no.7
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    • pp.1030-1037
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    • 2017
  • Traffic flows of real-time multimedia services such as Internet phone and IPTV are bounded on the end-to-end delay. Packets violating their delay limits will be dropped at a router because of not useful anymore. Service providers promise the quality of their providing services in terms of SLA(Service Level Agreement), and they, especially, have to guarantee the packet loss rates listed in the SLA. This paper is about a method to guarantee the required packet loss rate of each traffic flow keeping the high network resource utilization as well. In details, it assures the required loss rate by adjusting adaptively the timestamps of packets of the flow according to the difference between the required and measured loss rates in the lossy Weighted Fair Queuing(WFQ) scheduler. The proposed method is expected to be highly applicable because of assuring the packet loss rates regardless of the fluctuations of offered traffic load in terms of quality of services and statistical characteristics.

A Performance Evaluation of Multimedia-on-demand Server Using Simulation Method (시뮬레이션 기법을 이용한 주문형 멀티미디어 서버의 성능 평가)

  • 박기진
    • Journal of the Korea Society for Simulation
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    • v.7 no.2
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    • pp.33-43
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    • 1998
  • To evaluate the server performance and forecast capacity requirements, we carry out simulation of Multimedia-on-demand(MOD) server. In multimedia service environment, especially for on-demand service, one of the key problems is capacity planning, which requires ensuring that adequate computer resources will be available to meet the future workload demands in a cost-effective manner. In this paper, we design and implement a simulation model for MOD server with failures of components (e.g., processors, disks and networks). By acquisition of utilization and queue length parameters, we can estimate desirable capacity of server components with various arrival rates of customers and failure rates of components. For a given failure probability, we also compute packet delay probability and reliability of the server. It is possible to derive some important design information of the MOD server by using the above parameters.

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A study on multimedia-related subjects by using Flipped Learning for Young Child's Preliminary Teachers

  • Ha, Yan
    • Journal of the Korea Society of Computer and Information
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    • v.23 no.1
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    • pp.139-145
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    • 2018
  • This paper recommends flipped learning as a method to improve the learning abilities and the level of software utilization when it comes to using computers in children education institutes. Flipped learning enables a class fully making use of the up-to-date multimedia-related technology. Especially, flipped learning leads a participation-oriented class rather than lecture-based ones. Young child's teachers can, not only improve their capabilities to utilize multimedia, but also manage classes that follow the trend of the fourth industrial revolution. Therefore, this paper introduces the importance of media education when it comes to training preliminary teachers and suggests a flipped learning curriculum. This paper finds significance in future efficient education for raising creative and integrated thinking children.

Impacts of Corporate Network Building and Strategic Learning for Environmental Management on Business Performance

  • Kim, Youngshim;Jung, Hyung-Shik
    • Journal of Multimedia Information System
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    • v.8 no.4
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    • pp.267-276
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    • 2021
  • This study discovered the effects of strategic learning and network building on a company's environmental management performance. According to the results, the environmental awareness of the company and competition threats within the industry did not significantly affect the establishment of environmental strategy, whereas the consumer's sensitivity to the environment and the environmental regulation of the government did. The environmental awareness of the company and the consumer's sensitivity to the environment were found to greatly impact a company's network building. which is closely related with the utilization of multimedia system and technology. In addition, it was found that the establishment of corporate environmental strategy had a significant effect on network building and strategic learning, but network building did not significantly affect strategic learning, indicating a difference. Finally, corporate strategic learning affected environmental management performance, suggesting an importance in accumulating strategic learning capabilities to increase environmental management performance.

A Study on the Effective Utilization of Media for Open Education (열린교육을 위한 열린매체의 활용에 관한 연구)

  • Joo, Young-Ju
    • Journal of the Korean Institute of Educational Facilities
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    • v.5 no.3
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    • pp.107-115
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    • 1998
  • Open education is more relevant to the current educational reality which requires the liberalization, individualization and creativeness, and the effectiveness of open education will be maximized with the full utilization of instructional media. As well known, there are many different types of instructional media to promote open education such as print material, audio material, still picture, movie, computer, and multimedia. The main criteria to choose effective instructional media for open education depend upon easiness of supply and retrieval of information, and promotion of more frequent interaction among participants. In addition, utilization method, cost, curriculum contents, as well as school culture are also elements to consider in the selection of right instructional media.

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Performance Analysis of Enhanced MAC Protocol to Improve Utilization in Multimedia Service (멀티미디어 서비스 이용률 향상을 위한 진보된 MAC 프로토콜 성능분석)

  • Park, Byung-Joo;Yoo, Hwan-Souk;Kim, Sang-Ha
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.9 no.5
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    • pp.15-21
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    • 2009
  • An Ethernet passive optical network (EPON) is an economical and efficient access network that received significant research attention in recent year. A MAC protocol of the PON, the next generation access network, is based primarily on TDMA (Time Division Multiple Access). In this paper, we addressed the problems of a dynamic bandwidth allocation (DBA) in Fairness and QoS Performance. We augmented the advanced bandwidth allocation algorithms to support efficient resource utilization by reducing the unused remaining bandwidth made by idle state ONUs. Our new proposed advanced bandwidth allocation algorithm can allocate effectively and fairly the bandwidths between end-users.

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An Operating Strategy of Outer Networking of University According to Traffic Efficiency Analysis (트래픽 효율성 분석에 의한 대학 외부망의 운영 전략)

  • Choi Mu Hee;Ahn Byeong Tae;Kim Sung Jin;Ryu Si Kook;Kang Hyun Suk
    • Journal of Korea Multimedia Society
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    • v.8 no.1
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    • pp.119-127
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    • 2005
  • Each university in Korea has connected its campus network to outer network with a variety methods since every year KREN adopted an open bid in selecting a network service company. In particular many universities connected two or more outer networks have faced more complex decision problems about their network operations due to the intricacy of the networks. So, those university needs the system which helps the managers to select the optimum operating method for their campus networks. In this paper, campus network traffic efficiency based on utilization was analyzed using the manager's answers to the questions for traffic management. And, by the result of analysis, the link strategy to outer networks was suggested for the universities running simultaneously two outer networks.

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HDTV Essential Padding Area in Digital Broadcasting (디지털 방송에서 HDTV 필수 부가영역)

  • Han, Chan-Ho;Yoon, In-Seop
    • Journal of Korea Multimedia Society
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    • v.20 no.6
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    • pp.853-864
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    • 2017
  • HD padding area is essential redundancy in HD broadcasting. It is possible to use this padding area for the purpose of improving DTV broadcasting services. For utilization of this area, The bit of a service data was converted to black and white $8{\times}8$ block image. Converted block images are compressed with active video and are delivered to a receiver as only DC coefficients in a video stream. video quality is not effected by the proposed method, and service data was perfectly recovered in receiver without errors by using block average and threshold. The proposed utilization of HD essential padding area can possibly overcome the limited transmission stream rate with the bandwidth of HD broadcasting. If service data in transport or video stram were transferred using this padding area, it is possible to improve video quality with expanded video stream rate. Additionally, because the proposed methods are based on well-established standards, it is also useful for world-wide HD broadcasting systems such as ATSC, DVB, and IPTV.