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Practices and predictors of 2009 H1N1 vaccination in cancer patients: a nationwide survey in Korea.
Shin, Dong W,Kim, Yeol,Park, Jong H,Cho, Juhee,Jho, Hyun J,Yang, Hyung-Kook,Kim, Hyun S,Kim, So Y Blackwell Publishing Ltd 2012 Influenza and other respiratory viruses Vol.6 No.6
<P>Because patients with cancer are considered to be at high-risk for influenza infection and related complications, annual vaccination is recommended. The emergence of the novel H1N1 influenza virus in 2009 complicated the medical care of patients with cancer. The present study examined H1N1 vaccination practices among patients with cancer during the pandemic season and investigated factors related to the vaccination.</P>
맹선재,김기석,신동혁,금동화 대한금속재료학회(대한금속학회) 1990 대한금속·재료학회지 Vol.28 No.8
The microstructural aspects of the superplastic behavior in 7475 Al alloy are investigated. After superplastic tests, several specimens revealed large zones free of dispersoid particles-occasionally as large as 5㎛ across. Typical micrograph depicting dispersoid-free zones (DFZ) after 100% tensile strain showed DFZ at grain boundaries lying primarily normal to the tensile stress direction. This result emphasizes the importance of diffusional flow in explaining superplastic deformation of the fine-grained 7475 A1 alloy especially at low elongations, The dissolution and growth processes of dispersoid occured at high elongations and these processes can be responsible for the formation of the dispersoid-free zone.
Quench Protection System for the KSTAR Toroidal Field Superconducting Coil
Dong-Keun Lee,J. H. Choi,J. K. Jin,S. H. Hahn,Y. S. Kim,H. S. Ahn,G. Y. Jang,M. S. Yun,D. K. Seong,H. S. Shin 대한전기학회 2012 Journal of Electrical Engineering & Technology Vol.7 No.2
The design of the integrated quench protection (QP) system for the high current superconducting magnet (SCM) has been fabricated and tested for the toroidal field (TF) coil system of the Korea Superconducting Tokamak Advanced Research (KSTAR) device. The QP system is capable of protecting the TF SCM, which consists of 16 identical coils serially connected with a stored energy of 495 MJ at the design operation level at 35.2 ㎄ per turn. Given that the power supply for the TF coils can only ramp up and maintain the coil current, the design of the QP system includes two features. The first is a basic fast discharge function to protect the TF SCM by a dump resistor circuit with a 7 s time constant in case of coil quench event. The second is a slow discharge function with a time constant of 360 s for a daily TF discharge or for a stop demand from the tokamak control system. The QP system has been successfully tested up to 40 kA with a short circuit and up to 34 ㎄ with TF SCM in the second campaign of KSTAR. This paper describes the characteristics of the TF QP systems and test results of the plasma experiment of KSTAR in 2009.
퍼지 PD 제어기를 사용한 자율 무인 잠수정의 경유점 추적
신동협(Dong H. Shin),배설봉(Seol B. Bae),백운경(Woon K. Baek),주문갑(Moon G. Joo) 한국정보기술학회 2013 한국정보기술학회논문지 Vol.11 No.5
In this paper, we suggest a fuzzy PD controller for robust control of AUV(autonomous underwater vehicle). We implement the fuzzy PD controller combining a fuzzy system and three PD controllers designed for the surge of 1.2, 2.4, and 3.6m/s, respectively to cope with the unknown external force. In the simulation, we assume a sea current at 1m/s in a fixed direction and simulate the AUV way-point tracking using PD controller and fuzzy PD controller, respectively. In the Matlab/Simulink simulation, random noises up to ±0.005m/s to the measurement of velocity and ±15°/s, to angular velocity are considered. As a result of simulation, the proposed fuzzy PD controller is shown to overcome 1m/s sea currents and to track the way-point within 1m error range.
한반도 성층권 에어로졸 관측을 위한 성층권 라이다 개발
신동호 ( Dong Ho Shin ),노영민 ( Young Min Noh ),이권호 ( Kwon H Lee ),장은숙 ( Eun Suk Jang ),신성균 ( Sung Kyun Shin ),김영준 ( Young J Kim ) 대한원격탐사학회 2013 大韓遠隔探査學會誌 Vol.29 No.5
본 연구는 성층권 에어로졸의 분포와 광학적 특성을 분석하기 위하여 새로이 개발된 광주과학기술원의 라이다 시스템에 대하여 설명하고자 한다. 성층권 에어로졸의 후방산란비 산출을 위해 Nd:YAG 레이저를 광원으로 1064 nm와 532 nm 두 파장의 탄성산란 채널을 개발하였고, 편광소멸도 분석을 위해 532 nm파장에 두 개의 편광 채널을 설치하였다. 광자계수방식과 아날로그 디지털 변환 두가지 방식을 동시에 채택하여 후방산란신호 수신 효율과 최대 관측 고도를 향상시켰다. 개발된 라이다 시스템을 이용하여 2011년 9월 22일에 한반도 상공 성층권 에어로졸관측 분석하여 예시하였다. 라이다 관측 자료 분석을 통해 532 nm파장에서 성층권 에어로졸의 후방산란비를 산출을 통해 에어로졸의 시공간적 분포를 확인하고, 체적편광소멸도와 입자편광소멸도 산출을 통해 하고 입자의 비구형성을 판단하였다. We developed the three channel lidar system to measure stratospheric aerosols at the Gwangju Institute for Science and Technology (GIST), a suburban site in Republic of Korea. The system provides backscatter coefficient (β) at 532 and 1064 nm as well as depolarization ratios (δ) at 532 nm (2β + 1δ) using the doubled Nd:YAG laser wavelength at 532 and 1064 nm. The lidar system is optimized to measure stratospheric aerosols such as volcanic ashes. This paper describes the details of the optical setup, data acquisition system, and analysis method. This study shows an example of measuring stratospheric aerosols emitted by the volcanic eruption which occurred in Mt. Nabro (13.37° N, 41.70° E).