• Title/Summary/Keyword: suppress

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Gust Response and Active Suppress based on Reduced Order Models

  • Yang, Guowei;Nie, Xueyuan;Zheng, Guannan
    • International Journal of Aerospace System Engineering
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    • v.2 no.2
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    • pp.44-49
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    • 2015
  • A gust response analyses method based on Reduced Order Models (ROMs) was developed in the paper. Firstly, taken random signal as the input signal and adopt Single Input-Multi-Output (SIMO) training fashion, a ROM based on Auto-Regressive and Moving Average model (ARMA) was established and validated with the comparison of CFD/CSD and experiment. Then, by introducing control surface deflection and control laws, flutter active suppress was studied. Lastly, through filtering and transferring function, the gust temporal signal is obtained based on Dryden gust model, and gust response and suppress were simulated.

The Relationships between Emotion Display Rule and Nurse's Job Attitudes;Mediation Effects of Negative Emotion Suppress and Inauthenticity (정서표현규범과 간호사의 직무태도의 관계;부정정서억제와 가식의 매개효과)

  • Park, Jung-Ae;Han, Tae-Young
    • Journal of Korean Academy of Nursing Administration
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    • v.12 no.2
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    • pp.213-224
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    • 2006
  • Purpose: This study examined Korean nurses' job attitude (i.e., satisfaction and burnout) regarding the extent to which organization's emotion display rule influences on job attitudes through emotion-related variables (i.e., negative emotion suppress behavior and inauthenticity), thereby examining mediation effects of negative emotion suppress behavior and inauthenticity. Method: Using a survey to nurses working in various general hospitals in Korea, structural equation modeling was adopted. Result: Emotion display rule affected outcome variables but these effects were mostly observed via the two mediators, negative emotion suppress and inauthenticity, which largely supports the research model. Conclusion: Individuals who perceived stronger emotional display rule suppressed more their negative emotion, and also perceived more inauthenticity. In turn, negative emotion suppress behavior only affected job burnout positively. Inauthenticity showed a negative effect on job satisfaction while it had a positive effect on burnout. The study provided directions for future research and practical implications to help nurses' effective job performance.

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The Effects of the Anti-inflammation and Auto-immune System in Mouse by Danchisoyo-san (단치소요산이 염증상태의 면역세포에 미치는 영향)

  • Han Jhee Wan;Han Seong Nim;Ko Soong Gyu
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.16 no.5
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    • pp.914-920
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    • 2002
  • This experiment is carried out for test whether the addition temperament drugs of Danchisoyo-san have an anti-inflammatory effect and have suppression effect on immunocyte in the state of inflammation which induced by carageenan and zymosan. The freezing lyophilization powder which were extracted from Danchisoyo-san divided low dose group(200mg/kg-DSL) and high dose group(500mg/kg-DSH) and after melting in water, it was orally administered to the mouse. Compared with inflammation induced group which were induced by triggering-inflammation reagent carageenan and zymosan and normal contrast group, we measured the edema decrement effect, macrophage and spleen cell activation. 1. Danchisoyo-san has suppress inflammatory reaction induced by carrageenan. 2. Danchisoyo-san has suppress increasing activation of abdominal cavity macrophage cell in the carrageenan induced inflammation. 3. Danchisoyo-san has suppress increasing activation of spleen cell in the carrageenan induced inflammation. 4. Danchisoyo-san has suppress increasing activation of abdominal cavity macrophage in the zymosan induced inflammation. 5. Danchisoyo-san has suppress increasing activation of spleen cell in the zymosan induced inflammation. Based on the above result, Danchisoyo-san was improved its suppression effect to the inflammatory reaction through the suppression of spleen cell and macrophage activation. So we concluded that Danchisoyo-san is prospected as a anti-inflammatory agent to cure inflammation.

An Effective Power/Ground Network Design of VLSI Circuits to Suppress RLC Resonance Effects (공진현상을 감소시키기 위한 효율적인 파워/그라운드 네트워크 디자인)

  • Ryu, Soon-Keol;Eo, Yung-Seon;Shim, Jong-In
    • Proceedings of the IEEK Conference
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    • 2004.06b
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    • pp.435-438
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    • 2004
  • This paper presents a new analytical model to suppress RLC resonance effects in power/ground lines due to a decoupling capacitor. First, the resonance frequency of an RLC circuit which is composed of package inductance. decoupling capacitor, and output drivers is accurately estimated. Next, using the estimated resonance frequency, a suitable decoupling capacitor sire is determined. Then, a novel design methodology to suppress the resonance effects is developed. Finally, its validity is shown by using $0.18 {\mu}m$ process-based-HSPICE simulation.

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New Methods to Suppress EMI Noises in the Motor Drive System

  • Mutoh Nobuyoshi;Ogata Mitsukatsu;Gulez Kayhan;Harashima Fumio
    • Proceedings of the KIPE Conference
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    • 2001.10a
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    • pp.384-389
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    • 2001
  • New methods are studied that can suppress EMI noises, especially common mode currents produced in the motor drive system. One is a packaging technique that forms power converters using a four-layer printed power circuit board. The other is a method based on the generation mechanism of common mode currents which was developed from experimental analyses. It is proved by experiments that the former can effectively control common mode currents, including radiated emissions, and the latter can suppress them without any compensators between the inverter and the motor.

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Design of Half-Wavelength Low-PASS Filter with Wideband Rejection Characteristic (광대역 저지특성을 갖는 반파장 저역통과 여파기 설계)

  • Kim Young-Tae;Kim Young-Ju;Park Jun-Seok;Kim Hyeong-Seok;Lim Jae-Bong;Cho Hong-Goo
    • 한국정보통신설비학회:학술대회논문집
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    • 2003.08a
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    • pp.293-295
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    • 2003
  • In this paper, planar harmonic rejection low-pass filter is proposed to effectively suppress spurious response in stop-band. For suppress the unwanted signal such as spurious and harmonics, we presented a new design method controlled the higher order modes. The proposed low-pass filter was shown to suppress the spurious response by more than $20{\sim}40dB$ compared with conventional microstrip low-pass filters. The filter is evaluated by experiment and simulation with good agreement and shown to have attractive properties such as wide stop band range and low insertion loss.

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Design of a Robust STATCOM Supplementary Controller to Suppress SSR in Series-compensated Line (직렬 보상 선로에서의 SSR 억제를 위한 강인한 STATCOM 보조 제어기의 설계)

  • Seo, Jang-Cheol;Moon, Seung-Ill;Park, Jong-Keun
    • Proceedings of the KIEE Conference
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    • 1999.07c
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    • pp.1029-1031
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    • 1999
  • This paper presents an $H_{\infty}$ based robust STATCOM supplementary controller design to suppress the SSR in series-compensated line. This controller is designed to have the robust stability against the plant model uncertainty. Time domain simulations using a nonlinear system model show that the proposed STATCOM supplementary controller can suppress the SSR efficiently against the plant model uncertainty

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Coordinated voltage control of a DFIG-based Wind Power Plant to suppress the overvoltage after a fault clearance (사고 제어 이후 과전압 억제를 위한 DFIG 풍력단지의 협조 전압제어)

  • Park, Geon;Kim, Jinho;Kang, Yong Cheol
    • Proceedings of the KIEE Conference
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    • 2015.07a
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    • pp.175-176
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    • 2015
  • This paper presents a coordinated control scheme of a doubly-fed induction generator (DFIG)-based wind power plant (WPP) to suppress the overvoltage after a fault clearance. To achieve this, the variation of the terminal voltage at a fault clearance is captured and used to DFIG and WPP controllers. As a result, DFIGs within a WPP suppress the overvoltage rapidly by reducing the reactive power injection. The performance of the proposed scheme was investigated for a 100 MW WPP consisting of 20 units of 5 MW DFIGs for a grid fault. The results show the proposed scheme successfully suppresses the overvoltage at the point of interconnection.

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Effect of the addition temperament drugs of Yeongyopaedock-san(連翹敗靑散加味方)on acne in the state of inflammation (連翹敗毒散加味方이 炎症狀態의 面胞에 미치는 影響)

  • Kim, Sung-Bum;Kim, Kyung-Jun
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.15 no.1
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    • pp.50-62
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    • 2002
  • In the age of puberty or 20-30th young people who are sensitive to outward appearance, acne is serious problem at beauty and has social and psychological influence on that people. So this experiment is carried out for test whether the addition temperament drugs of Yungyopaedock-san(YP) have an anti-inflammatory effect and have suppression effect on immunocyte in the state of inflammation which induced by acne. The results was as follows. 1. YP has suppress inflammatory reaction induced by carageenan. 2. YP has suppress increasing activation of abdominal cavity macrophage in the carageen and zymosan induced inflammation. 3. YP has suppress increasing activation of spleen cell in the carageenan and zymosan induced inflammation. Based on the above result, YP was improved its suppression effect to the inflammatory reaction through the suppression of spleen cell and macrophage activation. So we concluded that YP is prospected as a anti-inflammatory agent to cure inflammation induced by ance.

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Design of a Robust STATCOM Supplementary Controller to Suppress the SSR in the Series-compensated System (직렬 보상 선로에서의 SSR 억제를 위한 강인한 STATCOM 보조 제어기의 설계)

  • Seo, Jang-Cheol;Mun, Seung-Il;Park, Jong-Geun
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.49 no.3
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    • pp.136-141
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    • 2000
  • This paper presents the design of an H$\infty$ based robust Static Synchronous Compensator (STATCOM) supplementary controller to suppress the subsynchronous resonance (SSR) in the series-compensated system. The IEEE second benchmark, System-l model is employed for this study. In order to design the effective controller, the modal controllability and observability indices to the oscillation modes are considered. Comprehensive time domain simulations using a nonlinear system model that the proposed STATCOM supplementary controller can suppress the SSR efficiently in spite of the variations of power system operating conditions.

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