• 제목/요약/키워드: Modem.

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PLM을 이용한 선박 비상조명시스템의 모니터링 (Monitoring of Ship's Emergency Lighting System using PLM(SELP))

  • 임현정;양현숙;김건우;백영진;이성근;김윤식
    • 한국마린엔지니어링학회:학술대회논문집
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    • 한국마린엔지니어링학회 2006년도 전기학술대회논문집
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    • pp.105-106
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    • 2006
  • In this paper we describe a driving, control and monitor of ship's emergency lighting system using power line modem.(PLM). Through this paper, experiment confirms that ON-OFF control of multiple SELP, real time transmission and monitor of parameters as to voltage, current, and power values are performed appropriately by PLM communication.

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Perspectives on Modern Drama

  • Yang, Gi-Chan
    • 인문언어
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    • 제2권1호
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    • pp.239-258
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    • 2002
  • The paper develops the arguments as to how one should perceive modem theater and how one should categories it, not to mention how one may identify the traits of modern theater. The Contemporary Theater has changed in a way that it is no longer possible to define the genre relying on conventional definitions that we associated with it in the past. The paper in this regard proposes a perspective which by addressing the evolutions that one has seen in the theories of reception and other relevant literary fields may define the very nature of the theater as we Cow it today. The paper is largely based on the aesthetics of reception and the objectivity theory which is based on the decontextualisation, recontextualisation and contextextualisation method that is being more and more commonly used in the field of literary academics of today. The relevancy of this paper rests with the hypothesis that it is by and through using various theories of reception that it is the only true solution as to defining and identifying the characteristics of modem theater.

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케이블 모뎀을 위한 AGC 및 DC offset Remover 설계 (Design of AGC and DC Offset Remover for Cable Modem)

  • 김기윤;최형진
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 1999년도 추계종합학술대회 논문집
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    • pp.775-779
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    • 1999
  • This paper presents design of AGC(Automatic Gain Control) and DC offset remover suitable for cable modem which makes use of QAM(Quadrature Amplitude Modulation) scheme. Since QAM has multi-level signal characteristic, for high-order QAM, the constellation is dense and the distance of decision boundary between adjacent symbols is short. So AGC and DC offset remover must be designed optionally for preventing performance degradation. AGC is designed into feedback type and is related to the STR(Symbol Timing Recovery)and Paff interpolation algorithm. Whereas AGC need to perform average power detection during many symbols by comparison with the reference power, DC offset remover uses only the instant polarity decision such that simple implementation can be achieved with good performance. Though the AGC and DC offset remover are simulated here only for 256 QAM scheme for convenience'sake, it can be applied to other multi-level QAM or PSK modulation scheme.

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복식에 나타난 하이퍼텍스트의 조형적 특성 (Plasticitic Characteristics of Hypertext in Costume)

  • 권정숙
    • 한국의류학회지
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    • 제30권2호
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    • pp.198-206
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    • 2006
  • Hypertext is a web form consisted of HTML(hypertext markup language) which is used in Internet. Hypertext in costume is the product of modem industrial society. Hypertext is not a mechanical technique that enlarges external capacity of human beings. It is rather a motif that extends the internal ability of human beings. It brings about the social innovation by extending the expression realm of costume and providing the various views of recognition. This study regards costume not as an artistic work but as a text which interacts in the open relationship of human body, society and culture and causes dynamic generation of meaning. This study distinguishes Plasticitic Characteristics of Hypertext in Costume with intertextuality, rhizome, interactivity in the structural characteristics of hypertext which is a typical trait of digital culture of openness and variousness. In conclusion, this study clarified plasticitic value of modem costume, which expresses vague isms and the pargidm of multi-typed culture most sensitively and condretley, and expressional forms in relation with the structural characteristics of hypertext.

모바일 컴퓨팅 플랫폼을 이용한 SDR 기반 MOBILE WIMAX 수신기 구현 (Implementation of Mobile WiMAX Receiver using Mobile Computing Platform for SDR System)

  • 김한택;안치영;김준;최승원
    • 디지털산업정보학회논문지
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    • 제8권1호
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    • pp.117-123
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    • 2012
  • This paper implements mobile Worldwide Interoperability for Microwave Access (WiMAX) receiver using Software Defined Radio (SDR) technology. SDR system is difficult to implement on the mobile handset because of restrictions that are computing power and under space constraints. The implemented receiver processes mobile WiMAX software modem on Open Multimedia Application Platform (OMAP) System on Chip (SoC) and Field Programmable Gate Array (FPGA). OMAP SoC is composed of ARM processor and Digital Signal Processor (DSP). ARM processor supports Single Instruction Multiple Data (SIMD) instruction which could operate on a vector of data with a single instruction and DSP is powerful image and video accelerators. For this reason, we suggest the possibility of SDR technology in the mobile handset. In order to verify the performance of the mobile WiMAX receiver, we measure the software modem runtime respectively. The experimental results show that the proposed receiver is able to do real-time signal processing.

현대 공동주거 단지 구서으이 전통성 적용에 관한 사례연구 - 길과 마당을 중심으로 - (A study on the Spatial Configuration of Korean Traditionality in Modern Residential Complex)

  • 이승희;김영욱;이현수
    • 한국주거학회:학술대회논문집
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    • 한국주거학회 2003년도 정기총회 및 추계학술대회
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    • pp.213-218
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    • 2003
  • The purpose of this study is to analyze how the concept of Korean traditional characteristics has been reflected in modem residential complex. The specific objective of this study is to identify the features of space planning in the exterior design of modem residential complex. This study is based on the content analysis in the site-plans of the selected case and adopteded in quantitative analysis for spatial characteristic using the space syntax modeling methods.

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디지털 모뎀과 무전기를 이용한 경보 시스템 구축 (Building Alert System by using Digital Modem and Radio Tranceiver)

  • 한태규;오휘빈;이용환;이준환;이상범
    • 한국컴퓨터산업교육학회:학술대회논문집
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    • 한국컴퓨터산업교육학회 2003년도 제4회 종합학술대회 논문집
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    • pp.11-16
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    • 2003
  • In this thesis, we talk about 'Example of Building Alert System by Radio Packet Modem and Radio Tranceiver' faster than CDMA method in Wireless Communication. Moreover this type of System is enough to be economic. we show example of building Alert System by using this method.

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4-Phase DPSK를 이용한 2400bps모뎀의 시작연구 (Experimental Development of a 2400bps Modem using 4-Phase DPSK)

  • 김대영;김재균
    • 한국통신학회논문지
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    • 제7권3호
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    • pp.112-119
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    • 1982
  • CCITT V.26에 의거한 4-위상 DPSK 2400bps 모뎀이 설계 구성되었다. 회로 전체가 집적회로소자를 이용해 구성되었으며 능동 여파기와 반도체 지연장치가 사용되었다. 동기신호의 재생에 있어서 새롭고 간단한 방법을 시도하여 그 타당성을 확인하였다. Gaussian 잡음에 대한 에러율은(error rate) 이론치와의 차이가 매우 근소함이 확인되었다.

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오디오 무선전송을 위한 TCM 모뎀의 Viterbi 디코더 설계 (Viterbi Decoder Design of TCM Modem for Audio Wireless Transmission)

  • 김성진;정희석;이호웅;강철호
    • 한국통신학회논문지
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    • 제27권1C호
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    • pp.84-89
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    • 2002
  • 제출된 논문에서는 고음질의 오디오 신호를 전송하는 무선 모뎀의 수신부에서 TCM 복호와에 사용되는 Viterbi 디코더를 VHDL을 이용하여 설계하고 FPGA를 이용하여 구현하였다. 이 논문에서는 TCM 부호화와 복호화와 복호화 과정을 간단히 설명한 후 부호화기와 복호화기를 FPGA로 구현한 다음 PC 상에서 채널의 영향을 재현하여 신호 대잡음비($E_b/N_0$) 변화에 따른 시스템의 비트에러율 성능을 제시하고 있다.

Tooth-colored Adhesive Restoration for Posterior Teeth

  • Krejci, I.
    • 대한치과보존학회:학술대회논문집
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    • 대한치과보존학회 2001년도 추계학술대회(제116회) 및 13회 Workshop 제3회 한ㆍ일 치과보존학회 공동학술대회 초록집
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    • pp.579-579
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    • 2001
  • One of the most important factors for the clinical success of adhesive posterior restorations is marginal adaptation. This property is very closely related to mechanical properties and to the shrinkage behavior of composite materials. Most of modem composite materials are light-cured. This is why the first part of this lecture will be confined to our recent research on light curing, such as plasma polymerization, LED polymerization and the power of modem halogen lamps. In the second part of the lecture the shrinkage properties such as dimensional shrinkage and shrinkage forces of different light curing materials and during different curing procedures will be discussed. Finally, in the third part of the lecture, marginal adaptation before and after loading in different cavity classes and by using different restorative techniques and curing procedures will be presented. Data will also be given on wear resistance, abrasiveness against opposing cusps and postcuring of composite materials.(omitted)

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