• Proceedings of the Korea Concrete Institute Conference
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• 2002.05a
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• pp.973-978
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• 2002

This study was performed to verify the effect of various testing conditions affecting measured compressive strength of concrete core and to compute the correction coefficients for it. Conditions of specimens affecting test results include size(diameter), height-diameter ratio, humidity of specimen, amount and arrangement of bar, core direction from structure and method of end preparation. In testing core strength of concrete, special cares should be taken on various testing conditions whose effects have been latent in conventional concrete.

• Proceedings of the KIEE Conference
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• 2008.09a
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• pp.231-232
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• 2008

The surface made of dielectric materials can therefore become probable sites for damaging electrostatic discharges. Thanks to a specially equipped chandler, the spatial environment can be reproduced experimentally in the laboratory. In this paper, the behavior of high energy electrons injected in polymers such as PolyMethylMetaAcrylate (PMMA) and Kpton is studied. Results obtained by surface potential technique, pulse-electro acoustic device and a cell based on the split Faraday cup system are analyzed and discussed.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.59 no.9
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• pp.1600-1604
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• 2010

This paper presents the optimum design of the brushless motor to maximize the output power per weight considering the design parameter tolerance. The optimization is proceeded by commercial software that is adopted the scatter-search algorithm and the characteristic analysis is conducted by FEM. The stochastic optimum design results are compared with those of the deterministic optimization method. We can verify that the results of the stochastic optimization is superior than that of deterministic optimization.

• Proceedings of the Korean Information Science Society Conference
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• 2008.06a
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• pp.5-6
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• 2008

• Proceedings of the Korean Information Science Society Conference
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• 2010.06a
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• pp.210-211
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• 2010

• Proceedings of the Korean Information Science Society Conference
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• 2010.06a
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• pp.208-209
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• 2010

• Proceedings of the Korean Information Science Society Conference
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• 2010.06a
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• pp.234-235
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• 2010

• Proceedings of the SAREK Conference
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• 2004.11a
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• pp.96-96
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• 2004

• Proceedings of the SAREK Conference
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• 2004.11a
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• pp.42-42
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• 2004

• Proceedings of the Korea Concrete Institute Conference
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• 2009.05a
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• pp.471-472
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• 2009

Recently, UH-PH SC (Ultra High PH Strength Concrete) used in High rise building is the material increases in tendency. Thus, the results indicate that it is possible to fireproof panels, fire protection of materials.