• Bulletin of the Korean Chemical Society
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• 제15권11호
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• pp.919-922
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• 1994

• 한국식품과학회지
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• 제21권6호
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• pp.857-862
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• 1989

팜유에 유화제인 sucrose fatty acid ester를 첨가하여 유화제 첨가농도의 변화에 따라 나타나는 팜유의 결정화 및 용융화 현상을 DSC를 이용하여 연구하였으며, 그 결과는 다음과 같다. 유화제가 첨가된 팜유를 냉각할 때, 무첨가군에 비하여 발열 정점 온도가 저하되었다. 이것은 SE가 300ppm까지 첨가된 팜유에서는 모결정 형성이 억제되므로 인해 결정화 온도가 저하된 것이다. 이는 SE의 첨가량이 300ppm까지 증가되는 것과는 관계없이 결정화 단계에서 저융점 결정 형성이 억제되었다. 팜유를 용융할 때 ${\alpha}$형 전이온도 및 entropy의 변화현상은 무첨가군에 비해 SE 첨가군의 경우, scanning rate의 변화에 관계없이 유화제의 분자 분산에 의한 영향으로 불규칙하게 나타났다.

• 대한전기학회논문지:전기기기및에너지변환시스템부문B
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• 제50권12호
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• pp.587-591
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• 2001

This paper describes the general and efficient design method of an axial and a radial shim coils to correct field impurities of various harmonic orders in the imaging volume of Magnetic Resonance Imaging magnet. Shim coils are optimized by BCLSF subroutine of IMSL, which is the well-known commercial package for optimization, aiming at maximizing the magnitude of the desired field component as well as minimizing other field components. In order to evaluate their effect, the developed method was applied to the MRI magnet constructed in KERI.

• Nuclear Engineering and Technology
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• 제49권1호
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• pp.141-147
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• 2017

Mechanical shim is an advanced technology for reactor power and axial offset control with control rod assemblies. To address the adverse accuracy impact on the ex-core power range neutron flux measurements-based axial offset control resulting from the variable positions of control rod assemblies, the lead-lag-compensated in-core self-powered vanadium detector signals are utilized. The prompt ${\gamma}$ current of self-powered detector is ignored normally due to its weakness compared with the delayed ${\beta}$ current, although it promptly reflects the flux change of the core. Based on the features of the prompt ${\gamma}$ current, a method for configuration of the lead-lag dynamic compensator is proposed. The simulations indicate that the method can improve dynamic response significantly with negligible adverse effects on the steady response. The robustness of the design implies that the method is of great value for engineering applications.

• Bulletin of the Korean Chemical Society
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• 제25권4호
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• pp.441-442
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• 2004

• 한국미생물학회:학술대회논문집
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• 한국미생물학회 2005년도 International Meeting of the Microbiological Society of Korea
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• pp.225.1-225
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• 2005

• 한국멀티미디어학회논문지
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• 제13권12호
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• pp.1814-1819
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• 2010

Since 1987, when statistical analyzing guide for thermal life test of Accelerated Life Test(ALT) was proposed as ANSI/IEEE Std 101, this guide has been used widely for many experiment data. Shim(2004) had done Monte Carlo simulation to compare life of two different systems or materials, based on statistic values obtained from ANSI/IEEE Std 101 data. In this study, a profile analysis is proposed for comparing life of two different systems or materials, and some examples using pre-existing data are given.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2002년도 ICCAS
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• pp.59.3-59
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• 2002

$\textbullet$ Contents 1: Preliminaries on passivity and feedback passivity $\textbullet$ Contents 2: Assumptions in the paper $\textbullet$ Contents 3: Adaptive output feedback controllers $\textbullet$ Contents 4: Adaptive disturbance attenuation $\textbullet$ Contents 5: Adaptive passification $\textbullet$ Contents 6: An illustrative numerical example

• 한국자기학회:학술대회 개요집
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• 한국자기학회 2005년도 동계학술연구발표회 및 2차 아시안포럼
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• pp.206-207
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• 2005

• 한국조경학회:학술대회논문집
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• 한국조경학회 1999년도 정기대회 및 학술논문발표회
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• pp.32-33
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• 1999