• Journal of Korea Multimedia Society
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• v.16 no.5
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• pp.566-576
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• 2013

In Home Area Network (HAN) of the smart grid, Power Line Communication (PLC) technology and ZigBee communication technology can be used in the communication among the Advanced Metering Infrastructure (AMI) devices. However, according to performance evaluation results of the PLC technology, we find that using the PLC technology is unsuitable for the remote meter reading service. It is worth noting that some parts of the PLC are converted to the ZigBee communication technology in Jeju, Korea. Compared with PLC, ZigBee has no restriction of the place, where the equipments can be freely set up, due to the advantage of radio communication. However, number of usable devices will impact the network performance which is depended on the address assignment. In addition, due to the restriction of transmission range among devices, it is difficult to apply the ZigBee address assignment method to the practical circumstance. In this paper, we examine the previous ZigBee address assignment schemes and the corresponding routing algorithms, and propose a novel address assignment scheme compared with the existing methods, the performance of the proposed one is improved. In particular, evaluation results show that the proposed scheme reduces the average number of hop count, the transfer time and the processing time.

• Journal of Korean Academy of Nursing
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• v.29 no.1
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• pp.9-20
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• 1999

Postpartum depression is one of the most serious problems in maternal health because it affects not only the mother but also her family. Postpartum depression disturbs maternal -infant interaction and attachment. However, most postpartum depression patients ignore this problem and do not seek treatment. Thus this study in conducted to development of a Home-Based Multimedia Tutoring System for postpartum depression management. With this computerized system, mothers in the postpartum periods can check the level of postpartum depression using a personal computer. This system will go through each mother's data and screen those who have abnormal values. In addition this system includes intervention programs -education for nutrition, hygiene care, sleep, postpartum exercise, methods of relaxation, deep breathing, visualization, music therapy and family therapy-to relieve postpartum depression. Using this system, a mother who has a minor level of depression can manage it by herself. Computer language used in this study were html 3.2, OS used was Microsoftware NT Server 4.0, the graphic tool was Adobe Photoshop 4.0, and the Webpage tool was Notepade. The results of this study are show at internet “URL : http : //203.241.225.42/”. Finally, the author suggests that this system could be adequately applied to assessing postpartum depression and as a intervention strategy for mothers during the postpartum period. Further this study contributes to designing an appropriate postpartum depression prevention strategy.

• Journal of Korea Multimedia Society
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• v.25 no.2
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• pp.390-397
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• 2022

Affordance is a kind of mental physiology, used by psychologist Donald A. Norman as a design idea, defined as "the property that something can directly and essentially provide something to a person or animal". This idea of returning to the essence and providing properties intuitively has a new guiding effect on product design. The purpose of this thesis is to take the theory of affordance as the basis of design concept, and redesign the shape of desktop lamps in small home appliances, so as to optimize the product shape. A product styling design method based on the concept of affordance is established through four major classifications of affordance, and a styling design scheme is completed using a tabletop luminaire in small home appliances as an example, and then a product styling design evaluation system is used to evaluate the new tabletop luminaire styling design scheme and the existing styling, and the evaluation results are analyzed. Finally, it is concluded that a new product styling design method based on affordance is constructed, and the feasibility and effectiveness of this method are verified, which provides ideas and theoretical basis for product styling design.

• Annual Conference of KIPS
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• 2004.11a
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• pp.191-194
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• 2004

차세대 인터넷 서버는 인터넷을 통하여 여러 사용자에게 HDTV 급 고품질 멀티미디어 서비스를 제공하고자 개발된 시스템이며, 이를 위하여 디스크 연결 및 네트워크 기능을 정합 시킨 특화된 NS 카드를 개발하였다. Contents Container 파일 시스템은 NS 카드 전용으로 개발된 멀티미디어 파일 시스템이며, 본 논문에서는 Contents Container 파일 시스템에 대한 개발 내용을 기술하고, 개발 시스템의 장단점을 파악하고자 EXT3 파일 시스템과 비교 분석하였다.

• Journal of the Korea Society of Computer and Information
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• v.20 no.8
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• pp.85-92
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• 2015

Due to the advancements in the capabilities of smart devices and home networks, we are able to easily access multimedia contents stored in a home server. In this paper, we present a wireless media content sharing mechanism for home networks that utilizes UPnP-based DLNA technology. We also present a novel Peer-to-Peer content sharing system that is able to operate on the client as well as server. Our system supports multiple push/pull services simultaneously via a multi-thread technique, and our intuitive user interface facilitates ease of use. Future studies would explore the feasibility of implementing our system in a multi-hop environment or providing a community-wide service.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 1999.12a
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• pp.289-299
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• 1999

• Proceedings of the Korean Information Science Society Conference
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• 2005.11b
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• pp.568-570
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• 2005

정보통신기술이 급속히 발전하는 가운데 최근 RFID기술이 주목받고 있다. 이미 물류관리 분야에서는 실용화 되었고 다른 분야로의 응용연구도 계속되고 있다. 최근에는 RFID기술을 휴대폰에 융합한 모바일 RFID(Mobile RFID)라는 개념이 제안되었으며 그 실용화를 위한 연구가 활발히 진행되고 있다. 모바일 RFID기술은 통신기기와 센서기기의 통합형이라는 점에서 홈네트워크 시스템에 적용하기 좋은 기술이다. 따라서 본 논문에서는 모바일 RFID기술을 홈네트워크에 적용하여 홈네트워크 제어기로 활용하는 방안을 제안하였다.

• Journal of Digital Contents Society
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• v.15 no.1
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• pp.39-43
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• 2014

This paper suggested a whiteboard for multimedia collaboration work. We implemented the whiteboard so that the users participated in collaborative work may refer shared media objects as the same view to others. In this paper, we discuss a method for increasing reliability of media data through whiteboard. This paper explains a performance analysis of a media data system running on distributed multimedia environment using the rule-based DEVS modeling and simulation techniques.

• Journal of Korea Multimedia Society
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• v.12 no.7
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• pp.1006-1015
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• 2009

This paper developed FRESH(Face image REcognition System for intelligent Home), proposed by Hopkins, which was to recognize the face of family members applying for HTM system that integrates a principal movement of human brain's neocortex with computers. For the purpose of confirming a result of the works, we took real photographs of both clear and distorted images, but the result produced higher accuracy about the distorted images providing by a real environment as well as clear images. In addition, the existing studies were focused on the recognition of facial zone that it was difficult to adapt for System for intelligent home. However, this thesis developed a system suitable for intelligent home which corresponds a facial image to his or her name.

• Journal of Multimedia Information System
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• v.1 no.2
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• pp.111-118
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• 2014

The Smart grid refers to the technology that enables efficient usage of electric power by collecting information concerning the power usage and power lines grafting information and communications technology to onto power grids. There are Zigbee, PLC or IEEE 802.11 WLAN MAC as a core technology of the Smart grid, but in this paper, the discussion is focused on the PLC. The PLC is the technology that carries out data communications using power lines and put into practical use in the field of lights or home appliances control recently but PLC-applied communications between electronic devices are rarely seen. For the reason that the PLC uses high-voltage power lines and has a disadvantage of experiencing higher data loss rate caused by the noises produced by going through transformers, the technology is yet to be used in many areas. Nevertheless, the PLC has been studied widely recently in respect that it's the low-cost communication solution for the Smart Metering [1]. Moreover, this technology is emerging as a novel data communication method and discussed as an important technology lately due to the developments of the Smart grid systems and Internet of things (IoT). Thus, in this paper, the results obtained from designing and performing implementation scenario for the PLC-based Smart grid home network system were compared and analyzed with that of IEEE 802.11 WLAN MAC (the foundation technology at Jeju Smart grid Test bed)-based Smart grid home network. Thus, in this paper, OPNET 14.5 PL8, OSI 7 layer, PLC router nodes and PLC nodes had been used for the designing and implementation simulations of both systems. Additionally, QoS was not considered in order to guarantee that all the traffics would not have the same processing priority.