• Information Display
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• v.15 no.6
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• pp.3-10
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• 2014

• KIPE Magazine
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• v.4 no.4
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• pp.28-31
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• 1999

• Proceedings of the KTCVS Conference
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• 1998.10a
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• pp.65-65
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• 1998

• Proceedings of the KTCVS Conference
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• 1998.10a
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• pp.25-25
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• 1998

• Proceedings of the KTCVS Conference
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• 1998.10a
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• pp.179-179
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• 1998

• Journal of The Korean Radiological Technologist Association
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• v.28 no.1
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• pp.305-306
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• 2002

• Proceedings of the Optical Society of Korea Conference
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• 2006.07a
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• pp.103-104
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• 2006

• Proceedings of the KGS Conference
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• 2001.05a
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• pp.122-125
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• 2001

• Journal of the Korean Geophysical Society
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• v.2 no.4
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• pp.259-268
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• 1999

Electrical resistivity surveys were conducted in the areas between Buji-ri and Seoak-dong, and between Nawon-ri and Yangdong-ri, Kyongju in order to investigate the geoelectric structure of the nothren part of the Yangsan Fault. In the area between Buji-ri and Seoak-dong south of Kyongju, the fracture zone east of the inferred fault develops more deeply, without significant north-south variation in depth, than west. In the area between Nawon-ri and Yangdong-ri north of Kyongju, the fault zone seems to be developed along the Hyungsan-river, and the resistivity structure west of the river is more affected by the fracture zone than east. Interpreted section of dipole-dipole survey conducted in Homyung-ri shows vertical contact of the Yangsan Fault. It appears that the boundary between the northern and central segment of the Yangsan Fault is located in the north of study areas since there is no significant variation in electrical resistivity structure near Kyongju.

• Journal of the Korean Society for Nondestructive Testing
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• v.18 no.3
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• pp.181-190
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• 1998

A computerized tomography system was developed using the X-ray source that has diameter of 5 micrometer. The system is used for the nondestructive testing of specimens with diameter below 20 mm. The convolution back projection algorithm was adopted for the reconstruction of cross sectional image, and the shape of the X-ray beam was let parallel beam or fan beam to compare each resultant image. Our CT system was constructed to operate based on the personal computer. The sectional images of the fabricated specimens were reconstructed and analyzed. The reconstructed images well coincided with real images taken with optical microscope and gave us enough reports on the defects in the ceramic specimen. The resolution of the system regarded as about $20{\sim}30$ micrometers.