• Title/Summary/Keyword: gap line

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Design of the arcing horns for the contaminated areas in 345 kV transmission line (345 kV 송전선로의 오손지역용 아킹혼 설계)

  • Cho, S.B.;Kang, Y.W.;We, H.B.
    • Proceedings of the KIEE Conference
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    • 1999.07e
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    • pp.2083-2085
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    • 1999
  • The same sized arcing horns have been installed on 345 kV transmission lines. Then arcing horn gaps are different according to the insulator string set. We need to examine the problems about the gap differences. So, we investigated the installation status of acing horn in 345 kV T/L. Based on these results. Drawing and making of the arcing horns for the contaminated areas is studied.

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주요 무역 상대국 인쇄물 관세율

  • Jo, Gap-Jun
    • 프린팅코리아
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    • s.15
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    • pp.57-59
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    • 2003
  • 관세는 국가가 조세법률주의의 원칙에 따라 법률에 의하여 국가재정의 수입 또는 국내산업의 보호를 목적으로 수입물품에 대하여 부과하는 조세이다. 관세의 전제가 되는 관세선(custom line)은 관세에 관한 법률규제가 이루어지는 경계로서, 정치적 경계인 국경선(national frontier)과 일치하는 것이 일반적이지만 반드시 일치하는 것은 아니다. 정치적으로는 자국의 영역이라도 관세제도상으로는 타국의 영역과 동일하게 다루어지는 자유무역지역, 그와 반대로 정치적으로는 타국의 영역일지라도 관세제도상으로는 자국의 영역과 다름없는 보세구역이나 관세동맹국 등이 있기 때문이다.

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The Vibration of Power Lines due to Corona in the Rainy Environments (우중 Corona에 의한 전선의 진동)

  • Joon Hyun Kim
    • 전기의세계
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    • v.21 no.4
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    • pp.22-26
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    • 1972
  • The vibration of power lines in rainy environments was researched using the concentric cylindrical gap to which D.C. voltage was applied. Consequently, it has been solidly conformed that the vibration of power lines begins at threshold voltage of corona, and that the amplitude of the vibration increases as the numbers of falling water drop per unit time increase. The vibration phenomen take place in straight line, elliptic or circular motion as voltage is applied the numbers of vibration nearay accord with the elastic vibrarion theory.

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Effects of an Overhead Ground Wire and Surge Arrester in the Railway due to Lightning Strokes (전차선로에서의 뇌격에 의한 가공지선과 보안기의 차폐효과)

  • 임성정;김재철;창상훈;정용철
    • Proceedings of the KSR Conference
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    • 2000.05a
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    • pp.93-99
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    • 2000
  • Using the EMTP(Electro Magnetic Transient Program) for the analysis of lightning direct voltage on the railway system, the shielding effects of overhead grounding wire on the railway were studied quantitatively. Installation of overhead ground wire and gap-type arrester such as s-horn Provides a 6.6㎸ HV distribution line with good protection effects. Even severe lightning induced voltage were create, 6.6㎸ HV lines can be withstand.

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ENI 스퍼터를 이용한 Cu Seed Layer 증착

  • Lee, Bong-Ju;Im, Seon-Taek;Park, Yeong-Chun;Yu, Seok-Jae
    • Proceedings of the Korean Institute of Surface Engineering Conference
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    • 2008.11a
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    • pp.3-4
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    • 2008
  • 로직 디바이스에서는 알루미늄을 대신하여 구리로 backend-of-line(BEOL) 금속화공정이 대체되고 있다. 그러나 메모리 디바이스에서 구리 배선으로의 전환이 쉽지 않다. Cu-seed layer는 구리 배선을 메모리 디바이스에 적용하기 위해서 필요한 gap-fill 확장성을 개선하기 위한 중요한 부분을 차지한다. Cu-seed layer 증착을 위한 향상된 PVD 장비인 Eni 스퍼터를 소개한다.

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Measurement of CO Q-branch Raman Spectrum by using High Resolution Inverse Raman Spectrometer (고분해능 Inverse 라만 분광기를 이용한 CO Q-branch 라만 분광 측정)

  • 한재원
    • Proceedings of the Optical Society of Korea Conference
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    • 1989.02a
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    • pp.59-64
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    • 1989
  • Raman vibrational Q0branch spectra of pure CO are measured by using the technique of quasicw inverse Raman spectroscopy utilizing a pulsed single-frequency laser source. This approach gives enhanced sensitivity compared to earlier work which employed CW lasers, allowing extension of that work to higher accuracy, higher J states, and higher pressure. Fitting laws with pertubation theory and modified energy gap(MEG) theory are described, and the line broadening and shifting coefficients of J=0 to 24 are determined with both fitting laws.

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Isochronism of Feet in English Fixed Meter on Moraic Analysis and Durational Measurement in Reading (모라 분석과 낭송 측정에 의한 영시 정형률의 음보 등시성)

  • Kim Keyseop;Shin Dongil
    • Proceedings of the KSPS conference
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    • 2002.11a
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    • pp.157-160
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    • 2002
  • This study aims to define the isochronism of English feet. To assess the average value of moras of a foot, the study is, first, to set up a way of counting the number of the moras on the extrametricality with some modifications. Secondly, with the measurement of the average duration of feet of Shakespeare's 120 sonnets through Praat (version 4.030, 2002), it clarifies the foot isochronism in English. With the two ways of measuring the isochronism, it clarifies the fact the foot isochronism permits the difference scope of $2.2{\mu}'s$ (moras) to $1.8{\mu}'s$, that is, $22{\mu}'s$ to $18{\mu}'s$ per line, while the acoustic assessment shows the isochronically congnitive gap of 302-447msec. per foot, or 4,461msec. to 3,019msec. per line in case of iambic pentameter in English poetry.

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A Confirmatory Model for Sustainability of Apparel Brands and Its Impact on Brand Outcomes

  • Park, Hyejune
    • International Journal of Costume and Fashion
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    • v.16 no.1
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    • pp.55-70
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    • 2016
  • The existing research on sustainability in the apparel industry provides no clear consensus on the definition of sustainability for the apparel brands and how sustainability of apparel brands as it is perceived by consumers can be measured. To fill this gap in research, the present study proposes and tests a confirmatory model of sustainability for apparel brands based on the three pillars of sustainability (i.e., economic, environmental, social sustainability) theorized in the Triple Bottom Line model. A survey of 754 U.S. consumers provided data for empirical testing. The results support the three-dimensional factor structure of sustainability for apparel brands and reveal that a second-order sustainability exerts a significant impact on both brand image and brand trust. The findings provide theoretical implications for researchers and practical managerial suggestions for marketers.

Design and Analysis of a Linear Motor for Slim-line ODD (소형 광디스크 드라이브용 선형 구동기의 설계 및 특성 해석)

  • Shim, Min-Taek;Park, Joon-Hyuk;Baek, Yoon Su
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2002.11b
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    • pp.794-798
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    • 2002
  • This paper deals with a moving coil type linear motor for fast access of the miniature ODD. This slim-line motor is composed of the mover supported by guide mechanism, the coil wound into it, and the yoke attached to the permanent magnet for stator. The driving force is generated by the PM of the stator and the current in the coils of the mover. Magnetic circuit analysis and Finite Element Method are applied to estimate the thrust force at air gap. In order to compare the force characteristics between two methods, various experiment results are applied to verify on a prototype. Also the flexible modes of the motor are predicted through the FEM and the structural components are modified to locate this on high frequency region.

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The study of single phase line start permanent magnet motor for characteristic improvement (단상 유도형 동기 전동기의 성능향상을 위한 고찰)

  • Lee, Jin-Hun;Kim, Seung-Joo;Choi, Seung-Kil;Lee, Ju
    • Proceedings of the KIEE Conference
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    • 2007.10c
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    • pp.77-79
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    • 2007
  • In previous structure of single phase LSPM, there is large torque ripple that makes a noise and a vibration by a distortion of flux distribution in air gap. By this reason, the single phase LSPM is not accepted home applications. So, in this paper, we propose new structure of single phase LSPM(Line Start Permanent magnet Motor). The proposed model is reduced a torque ripple about a half than previous model.

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