• The Academic Congress of Korean Shoulder and Elbow Society
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• 2005.03a
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• pp.14-15
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• 2005

• Proceedings of the Materials Research Society of Korea Conference
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• 2011.05a
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• pp.58.2-58.2
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• 2011

• 한국정보디스플레이학회:학술대회논문집
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• 2008.10a
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• pp.384-387
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• 2008

We have studied the adsorption of contaminations on the MgO protective layer by Thermal Desorption Spectrometry (TDS). The result shows that the increase in exposure time, MgO thickness and humidity multiply the quantity of adsorbed contaminations. It is also found that the desorption activation energy and contamination quantity is decreased by the additional firing process of MgO layer under oxygen environment.

• Proceedings of the KWS Conference
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• 2006.05a
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• pp.224-226
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• 2006

• 대한예방의학회:학술대회논문집
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• 2004.10a
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• pp.54.2-55
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• 2004

• Proceedings of the KWS Conference
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• 2002.05a
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• pp.36-38
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• 2002

This paper is a study on the effect of the cutting speed, length of tip-specimen and cutting thickness in CNC gas cutting of the high-tensile steel plate(AH36). Experiments were performed to investigate the variations of cutting surface, surface roughness and kerf width under various cutting conditions.

• Proceedings of the Materials Research Society of Korea Conference
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• 2000.11a
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• pp.110-110
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• 2000

• Proceedings of the Korean Powder Metallurgy Institute Conference
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• 2006.09b
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• pp.1190-1190
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• 2006

• 한국방재학회:학술대회논문집
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• 2008.02a
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• pp.49-52
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• 2008

The design strength of panel zones, which was based on Krawinkler model, was investigated by comparing it with existing test and FEM results. The design strength overestimates of the strength of panel zones with thick column flange while it matches well with the strength of panel zones with thin column flange. More extensive studies are needed to develop a mathematical model which can properly define the inelastic behavior of panel zones with various column flange thicknesses and to determine a more rational design strength.

• 제어로봇시스템학회:학술대회논문집
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• 2001.10a
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• pp.164.2-164
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• 2001

Sliding mode control (SMC) with variable nonlinear boundary layer is proposed. Two Fuzzy logic controllers (FLCs) are used to decide both boundary layer thickness and nonlinear interpolation using sigmoid function in the boundary layer. The nonlinear interpolation in the boundary layer suing FLC reduces stead state error and chattering. Sigmoid function is used to nonlinear interpolation in the boundary layer sigmoid function parameter with FLC. To demonstrate its performance, the Proposed control algorithm is applied to a simple nonlinear system.