• Title/Summary/Keyword: S-compatible

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A Trend of Domestic and Foreign Service-compatible 3DTV Broadcasting Standardization (국내외 서비스 호환 3DTV 방송 표준화 현황)

  • Yun, K.J.;Lee, J.Y.;Lee, B.H.;You, W.S.;Jung, J.Y.;Cheong, W.S.
    • Electronics and Telecommunications Trends
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    • v.27 no.4
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    • pp.107-113
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    • 2012
  • 현재 3DTV 방송은 한국, 미국, 유럽 등 선진국을 중심으로 다양한 방식의 3DTV 실험방송 및 상용 서비스가 활발히 진행되고 있다. 3DTV 방송 방식은 기술개발 진행 측면에서 i) 서비스 호환 방식 지원, ii) 기존 디지털방송 화질 및 최대 1080i 고해상도 지원이라는 핵심 기술개발을 목표로 점차 진화되고 있으며 전 세계 표준단체는 이를 지원하기 위한 서비스 호환 3DTV 방송 서비스에 대한 표준화가 본격적으로 진행 중에 있다. 본고에서는 ATSC(Advanced Television Systems Committee), DVB(Digital Video Broadcasting), SCTE(Society of Cable Telecommunications Engineers) 및 TTA(Telecommunications Technology Association) 등 다양한 디지털방송 매체 기반의 서비스 호환 3DTV 방송 방식에 대한 국내외 표준화 현황에 대해 살펴본다.

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AERODYNAMIC HEATING TEMPERATURE OF SOUNDING ROCKET USING CFD (CFD를 이용한 로켓 공력가열 온도 예측)

  • Kim, S.L.;Kim, Y.H.;Ok, H.;Kim, I.
    • 한국전산유체공학회:학술대회논문집
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    • 2006.10a
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    • pp.89-92
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    • 2006
  • Aerodynamic heating temperature shown in a NASA's sounding rocket test data was reproduced with CFD technique, comparing with those with analytical method CFD made heat transfer rates and recovery temperatures as the flight trajectory, which made it possible to calculate the wall temperature of rocket. The predicted wall temperature was compared with analytically predicted temperatures. Both the temperatures were compatible although their recovery temperature and heat transfer rates are a little different.

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Fabrication and Characteristics of Long Wavelength Receiver OEIC (장파장 OEIC의 제작 및 특성)

  • 박기성
    • Proceedings of the Optical Society of Korea Conference
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    • 1991.06a
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    • pp.190-193
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    • 1991
  • The monolithically integrated receiver OEIC using InGaAs/InP PIN PD, junction FET's and bias resistor has been fabricated on semi-insulating InP substrate. The fabrication process is highly compatible between PD and self-aligned JFET, and reduction in gate length is achieved using an anisotropic selective etching and a non-planar OMVPE process. The PIN photodetector with a 80 ${\mu}{\textrm}{m}$ diameter exhibits current of less than 5 nA and a capacitance of about 0.35 pF at -5 V bias voltage. An extrinsic transconductance and a gate-source capacitance of the JFET with 4 ${\mu}{\textrm}{m}$ gate length (gate width = 150 ${\mu}{\textrm}{m}$) are typically 45 mS/mm and 0.67 pF at 0 V, respectively. A voltage gain of the pre-amplifier is 5.5.

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Challenging a Single-Factor Analysis of Case Drop in Korean

  • Chung, Eun Seon
    • Language and Information
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    • v.19 no.1
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    • pp.1-18
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    • 2015
  • Korean marks case for subjects and objects, but it is well known that case-markers can be dropped in certain contexts. Kwon and Zribi-Hertz (2008) establishes the phenomenon of Korean case drop on a single factor of f(ocus)-structure visibility and claims that both subject and object case drop can fall under a single linguistic generalization of information structure. However, the supporting data is not empirically substantiated and the tenability of the f-structure analysis is still under question. In this paper, an experiment was conducted to show that the specific claims of Kwon and Zribi-Hertz's analysis that places exclusive importance on information structure cannot be adequately supported by empirical evidence. In addition, the present study examines H. Lee's (2006a, 2006c) multi-factor analysis of object case drop and investigates whether this approach can subsume both subject and object case drop under a unified analysis. The present findings indicate that the multi-factor analysis that involves the interaction of independent factors (Focus, Animacy, and Definiteness) is also compatible with subject case drop, and that judgments on case drop are not categorical but form gradient statistical preferences.

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Analysis of embedded capacitor using Flexible PCB (Flexible PCB를 이용한 내장형 캐패시터의 분석)

  • Yoo, Joshua;Kim, J.W.;Yoo, M.J.;Park, S.D.;Lee, W.S.;Lee, H.G.;Kang, N.K.
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2004.04b
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    • pp.150-152
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    • 2004
  • The number of layers in rigid PCB(printed circuit board) is restricted, so the number of components can be embedded in module is restricted also. But using flexible multilayer PCB, the layers over than 7 can be evaluated. In this study, to verify the possibility of application of flexible multilayer PCB to RF modules, multilayered embedded capacitor is fabricated and analyzed. The characteristics of embedded capacitor is analyzed and compared to that of MLCC and LTCC capacitor. Embedded capacitor has better electrical features than MLCC and compatible one to LTCC capacitor.

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Presupposition and Anaphoricity

  • Song, Jaegyun
    • Korean Journal of English Language and Linguistics
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    • v.1 no.3
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    • pp.457-476
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    • 2001
  • This paper is to reconsider the relation between presupposition and anaphoricity. My proposal goes as follows: First, the anaphoricity view of presupposition is problematic in that it heavily relies on accommodated antecedents, and this will end up depriving the view of much of its content. So, it is suggest that accommodation should be taken as a mechanism to add presupposed new information to the context, like an asserted proposition. Next, I show that, between two prominent theories of presupposition projection, both of which commit themselves to the anaphoricity view, van der Sandt's theory is quite compatible with the revised view of accommodation, but Heim's theory isn't, because anaphoricity is at the heart of its projection mechanism. Finally, I suggest that unaccommodatable presuppositions should be explained not by the properties of presupposition itself, but by the lexical properties of presupposition triggers.

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Characteristics of L-Ascorbic Acid Encapsulated BGsome and its Stabilization Effect (L-ascorbic acid가 포집된 BGsome의 특성 및 안정화 효과)

  • Hwang, Sue-Yun;Jin, Byung-Suk
    • Journal of the Korean Applied Science and Technology
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    • v.28 no.3
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    • pp.313-320
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    • 2011
  • Encapsulation of L-ascorbic acid(AA) into BGsome was attempted to improve its stability. BGsome is a bio-compatible vesicular system prepared by dispersion of hydrated liquid crystalline phase formed through hydration of 1,3-butylene glycol(BG)-dissolved lecithin with an aqueous solution containing hydrophilic component. The characteristics of AA encapsulated BGsome, such as droplet size, surface charge, and solution appearance, was investigated. The concentration of AA solution had considerable effect on droplet size and surface charge of BGsome. Several tens nanometer droplet made by sonication treatment did not showed any change of size with storage time. Stability of AA was improved by encapsulation into BGsome, which was verified through DPPH test and HPLC assay.

Massive Intracerebral Hemorrhage Caused by a Cavernous Malformation

  • Kim, Young-Soo;Lee, Jae-Il;Choi, Chang-Hwa;Ko, Jun-Kyeung
    • Journal of Korean Neurosurgical Society
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    • v.51 no.1
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    • pp.37-39
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    • 2012
  • We present a rare case of massive intracerebral hemorrhage resulting from a small, superficially-located supratentorial cavernous malformation, or cavernoma. These lesions rarely lead to massive, life-threatening intracerebral hemorrhages. A 17-year-old female presented with a 3-week history of declining mental status. Brain computed tomography and magnetic resonance imaging revealed a sizable intracranial hemorrhage, within the right occipital region, associated with a small nodule at the hematoma's posterior margin. An emergency operation removed the entire hematoma and nodule. Histological examination of the nodule was compatible with a diagnosis of cavernous malformation. The patient's post-operative course was uneventful.

On the Modeling of Dynamic Systems

  • Suk, Jinyoung;Kim, Youdan
    • International Journal of Aeronautical and Space Sciences
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    • v.2 no.1
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    • pp.78-92
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    • 2001
  • In this paper, several dynamic systems are modeled using the time domain finite element method. Galerkins' Weak Principle is used to model the general second-order mechanical system, and is applied to a simple pendulum dynamics. Problems caused by approximating the final momentum are also investigated. Extending the research, some dynamic analysis methods are suggested for the hybrid coordinate systems that have both slew and flexible modes. The proposed methods are based on both Extended Hamilton's Principle and Galerkin's Weak Principle. The matrix wave equation is propagated in space domain, satisfying the geometric/natural boundary conditions. As a result, the flexible motion can be obtained compatible with the applied control input. Numerical example is shown to demonstrate the effectiveness of the proposed modeling methods for the hybrid coordinate systems.

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A Study on Satellite Processor System for Factory Automation (공장 자동화 응용을 위한 Satellite Processor System 연구)

  • 김종진;박찬익
    • Journal of the Korean Institute of Telematics and Electronics
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    • v.22 no.5
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    • pp.39-44
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    • 1985
  • For the application of (actory automation, a UNIX system with satellite processor, which can be categorized into master / slave hierarchical structure, is studied and implemented. The kernel part of UHIX is modified for the master/slavc structure, but it is designed fully compatible with the existing UNIX systems. 4 special user process is created to make easy to down load developed program from host to satellite processor with the concept of co-process. Also satellite processor can send messages and request retrain seNices from host computer. The design principles considered here art reliability, expamibility, and con-currency.

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