• Title/Summary/Keyword: separated

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Analysis of Operational Impact for Separated Gate System in Port Container Terminal (컨테이너터미널의 분리게이트 운영효과 분석)

  • Choi Yong-Seok;Ha Tae-Young;Kim Woo-Seon
    • Journal of Navigation and Port Research
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    • v.30 no.5 s.111
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    • pp.389-396
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    • 2006
  • With the recent port environment, the integration of the separated berth is being actively progressed and the necessity of integration has been strengthening. Therefore, the application of existing gates have to review in order to reduce the truck turnaround time and to distribute the truck traffic volume in port container terminal. This paper analyzed the operation impact both the integrated gate and the separated gates. As the result of the analysis, this study suggests the separated gate system as an efficient design for gate operation considering integration of two individual berth.

Dependence of External Magnetic Field in the Matrix-Type SFCL with the Separated or the Integrated Reactors (분리형과 일체형 리액터에 따른 매트릭스형 초전도 한류기의 외부자장 의존성 연구)

  • Cho, Yong-Sun;Choi, Hyo-Sang;Jung, Byoung-Ik;Go, Sung-Pil
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.60 no.4
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    • pp.880-884
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    • 2011
  • The matrix-type superconducting fault current limiter (MSFCL) consists of the trigger and current-limiting parts. The trigger part with reactors connected in parallel improves the quenching characteristics by applying the external magnetic field into the superconducting units. The current-limiting part with superconducting units connected in parallel and shunt reactors connected in series limit the fault current when the fault occurs. We developed the integrated reactor with the trigger and the current-limiting parts to apply high external magnetic field into the superconducting units. This was composed of a superconducting unit for the trigger part and two superconducting units for the current-limiting parts. We confirmed that the external magnetic field generated in the MSFCL with an integrated reactor was larger than that of the MSFCL with the separated reactors. So the differences of voltages generated between superconducting units were decreased in the difference according to the increment of the applied voltage. The whole magnitude of the SFCL was reduced because the volume of an integrated reactor could be reduced by one-third than that of the separated reactors. We confirmed that the critical behavior between the superconducting units in the MSFCL with an integrated reactor was more improved than that of the MSFCL with the separated reactors.

Vasodilatation Effect of Complex Saponin Separated from Scrophulariae radix, Asparagus cochinchinensis and Liriope platyphylla Mixture Extract

  • Jung Hwan Nam;Jong Nam Lee;Su hyoung Park;Su Jeong Kim;Do Yeon Kim
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2023.04a
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    • pp.39-39
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    • 2023
  • The purpose of this study is to investigate vasodilatation effect of complex saponin separated from Scrophulariae radix, Asparagus cochinchinensis and Liriope platyphylla mixture extract on rabbit carotid artery. In this study, to determine vasodilatation effect of complex saponin separated from Scrophulariae radix, Asparagus cochinchinensis and Liriope platyphylla mixture extract on rabbit carotid artery, arterial rings with intact or damaged endothelium were used for experiment using organ bath, and were contracted by endothelin. complex saponin, major active constituents of Scrophulariae radix, Asparagus cochinchinensis and Liriope platyphylla mixture extract, showed a moderate vasodilatation effect on the basilar arteries of rabbits. Therefore, treatment with complex saponin separated from Scrophulariae radix, Asparagus cochinchinensis and Liriope platyphylla mixture extract may selectively accelerate cerebral blood flow through dilatation of the basilar artery. Theseis result suggest a potential role of complex saponin separated from Scrophulariae radix, Asparagus cochinchinensis and Liriope platyphylla mixture extract as source of vasodilatation agent.

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Robust compensator design for parametric uncertain systems by separated optimizations (분리최적화 기법을 이용한 강인제어기 설계)

  • 김경수;박영진
    • 제어로봇시스템학회:학술대회논문집
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    • 1996.10b
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    • pp.589-592
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    • 1996
  • It is well known that robust compensators designed by the block-diagonal Lyapunov function approaches are conservative while they are popular in practice because of their computational easiness. In this note, we develop a systematized version of conventional block-diagonal Lyapunov function approaches by deriving two separated optimizations based on the guaranteed cost control method. The proposed method generates reasonable robust compensators in practice.

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Experimental study of vertical fence wake with flow separator (Flow separator가 부착된 수직벽 후류유동의 실험적 연구)

  • Choi, Young-Ho;Kim, Hyoung-Bum
    • 한국가시화정보학회:학술대회논문집
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    • 2006.12a
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    • pp.68-72
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    • 2006
  • Vertical fence has the coherent flow structure in front of the fence. In the present study, the wake change due to the flow separator in front of the vertical fence was experimentally investigated. Quantitative method was applied to study the separated shear flow field. The results show the flow separator changes the downstream shear flow and alters the curvature of separated shear layer As the freestream velocity increased, the reattachment length also increased.

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A Study on the Effect of Superconducting Fault Current Limiter in Power System with Separated Bus and Superconducting Fault Current Limiter (모선 분리 운영중인 전력계통에 초전도 한류기 적용 효과 및 영향에 관한 연구)

  • Kim, Myong-Hyon;Kim, Jin-Seok;Lim, Sung-Hun;Kim, Jae-Chul
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.26 no.12
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    • pp.74-79
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    • 2012
  • Currently, separated buses were increased to limit a fault currents in power transmission system. However, separated buses caused bad influences such as a decrease of reliability and stability. Superconducting fault current limiter (SFCL) was proposed to limit a fault current lately and that has many merits beside any other solutions. Therefore, we proposed the install of Superconducting fault current limiter (SFCL) in power transmission system with separated bus. And our proposal was verified by reliability of power system.

Utilization Analysis by Tool Allocation Method of the FMS (FMS의 공구배분법에 가동률 분석)

  • 허성관;하정진
    • Journal of the Korean Operations Research and Management Science Society
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    • v.18 no.1
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    • pp.19-28
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    • 1993
  • A completely separated functional FMS (Flexible Manufacturing Systems), or a partly separated functional FMS, should be constructed because a fully functional FMS, where each machine has all of the tools required for procesing various kinds of jobs, is superflous and wasteful in meeting the multiform and changeable demands of comsumers in a flexible manner. The effective methods are presented in this study for allocating the tools to each machine in a two-machine flow shop type FMS to meet the above demands and to maximize the utilization of the FMS. The methods for a completely separated functional FMS having no duplicated tools and a partly separated functional FMS having some duplicated tools are proposed in this paper. Some simulation results clarify that utilization of the FMS by this methods is as high as the fully functional FMS when the number of jobs is large.

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HPLC Analysis of Methylated Amino Acids : Methylated Amino Acids on HPLC

  • Park, Kwang-Sook;Hong, Sung-Youl;Lee, Hyang-Woo;Kim, Snag-Duk;Paik, Woon-Ki
    • Archives of Pharmacal Research
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    • v.9 no.1
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    • pp.15-18
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    • 1986
  • Various naturally occuring methylated amino acid derivatives were resolved on high performance liquid chromatography (HPLC), using o-phthadialdehyde as a fluorogenic reagent. We separated .$\varepsilon$-N-monomethyllysine, $\varepsilon$-N- dimethyllysine, and $\varepsilon$-N-acetyllysine from lysine derivatives. $N^{G}$-Monomethylarginine and $N^{G}$-dimethylarginine were separated from arginine derivatives. However, $\varepsilon$-N-monomethyllsine and $\varepsilon$-N-trimethyllysine, $N^{G}$, $N^{G}$-dimethylarginine and $N^{G}$, $N^{G}$-dimethylarginine were not resolved under the conditions employed. S-Methylmethionine, S-methylcysteine, and 1-N-methylhistidine or 3-N-methylhistidine were clearly separated from their reference amino acids, even though 1-N-methyl-and 3-N-methylhistidine coul not be separated.

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Frequency Bin Alignment Using Covariance of Power Ratio of Separated Signals in Multi-channel FD-ICA (다채널 주파수영역 독립성분분석에서 분리된 신호 전력비의 공분산을 이용한 주파수 빈 정렬)

  • Quan, Xingri;Bae, Keunsung
    • Phonetics and Speech Sciences
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    • v.6 no.3
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    • pp.149-153
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    • 2014
  • In frequency domain ICA, the frequency bin permutation problem falls off the quality of separated signals. In this paper, we propose a new algorithm to solve the frequency bin permutation problem using the covariance of power ratio of separated signals in multi-channel FD-ICA. It makes use of the continuity of the spectrum of speech signals to check if frequency bin permutation occurs in the separated signal using the power ratio of adjacent frequency bins. Experimental results have shown that the proposed method could fix the frequency bin permutation problem in the multi-channel FD-ICA.

Developmental Environment and Adjustment of Korean-Chinese Children Separated from Both Their Parents (부모와 별거하는 중국 조선족 아동의 생활환경과 적응문제)

  • Cho, Bokhee;Lee, Joo-Yeon
    • Korean Journal of Child Studies
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    • v.26 no.4
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    • pp.231-245
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    • 2005
  • Recruited from Korean-Chinese preschools and elementary schools in Shenyang and Harbin, China, 150 caregivers of Korean-Chinese children separated from their parents provided general information about the separation(reason and duration of parent-child separation, present location of parents, etc.). They also filled out information about children's responses as to when the children had been separated and about children's behavior problems(Behavior Rating Scale, Behar & Stringfield, 1974). Results showed that most of the children were cared-for by relatives. Caregivers reported that the separated children adjusted positively to parent-child separation and were not anxious about living with a caregiver. There were significant differences in children's behavior problems by duration of separation from mother and frequency of contact between parent and caregiver.

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