• Proceedings of the Korean Vacuum Society Conference
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• 2005.08a
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• pp.182-182
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• 2005

• Proceedings of the Korean Vacuum Society Conference
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• 2005.08a
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• pp.65-65
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• 2005

• Proceedings of the Korean Geotechical Society Conference
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• 1998.06a
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• pp.7-50
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• 1998

• 대한예방의학회:학술대회논문집
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• 2000.10a
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• pp.73-74
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• 2000

• 대한예방의학회:학술대회논문집
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• 2000.10a
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• pp.169-170
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• 2000

• Proceedings of the Korean Society of Crop Science Conference
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• 2018.10a
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• pp.138-138
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• 2018

• Journal of Digital Convergence
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• v.12 no.4
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• pp.455-460
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• 2014

In this paper, in order to improve the online game fatigue system for the purpose of use in South Korea and China's online game fatigue system analysis and comparison and find the problem and make improvements..Poisoning Prevention Youth Network game system, although many of the practical implementation of the research is very inadequate.So here we do it by comparing South Korea and China's online game fatigue system, promote physical fatigue perfect game addicted youth to further resolve the issue.

• Explosives and Blasting
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• v.28 no.1
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• pp.71-75
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• 2010

A plan of construction of subsea tunnels connecting Korea-Japan and Korea-China have been discussing over the past several ten years. This paper were wrote about the present capacity of our engineer, the cooperation plan of politics and economy. Especially we examined and studied resolution method and technical problem in the construction of Sub-sea tunnel. In terms of excavation technology, Blasting and water resistance technology should be cared considering the status of rock such as fault in the deep sea. After of a construction work, it should be carefully designed and constructed for the fire and leakage management in Tunnel, It should be applied to High Construction Management Professional and Value Management(CVS) etc.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2005.05a
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• pp.17-20
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• 2005

This paper reported the temperature history of concrete placed at deck plate slab under cold climate condition by varying with surface insulating type. No curing sheet and simple insulation curing including non-woven fabric, double layer bubble sheet, the combination of double layer bubble sheet and non-woven fabric dropped temperature below zero within 24 hours, which caused frost damage at early age. On the other hand, the combination of double layer bubble sheet and non-woven fabric and double layer bubble sheet and styrofoam maintained minimum temperature above $4^{\circ}C\;and\;8^{\circ}C$, respectively. Based on core test results compressive strength of concrete with the combination of double layer bubble sheet and non-woven fabric and double layer bubble sheet and styrofoam was higher than those with other curing method due to good insulation effect.

• Proceedings of the Korea Concrete Institute Conference
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• 2008.11a
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• pp.617-620
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• 2008

When fresh concrete is exposed to the cold weather, the concrete may happen frost damage because of freezing at early ages and the strength development may be go down. Therefore, this paper is intend to investigate the properties and availabilities of cold weather concrete using anti-freeze based formate-acetate for ensure of excellent concrete quality on cold temperature. According to test result for concrete in anti-freeze agent, strength properties in sub-zero temperature increases in comparison with concrete of non anti-freeze agent without decline of strength until later age. When anti-freezing agent is added by 3.0% to binder, it gives good effects on the performance of the fresh and harden concrete.