• NEWSLETTER 전기공업
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• no.96-22 s.167
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• pp.13-47
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• 1996

• Journal of Korean Electronics
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• v.26 no.12
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• pp.25-25
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• 2006

• Journal of Korean Electronics
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• v.26 no.12
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• pp.26-26
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• 2006

• Journal of Korean Electronics
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• v.24 no.6
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• pp.50-51
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• 2004

• The Safety technology
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• no.72
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• pp.72-77
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• 2003

• The Safety technology
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• no.69
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• pp.72-77
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• 2003

• The Safety technology
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• no.117
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• pp.82-85
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• 2007

• 월간산업보건
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• s.4
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• pp.30-38
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• 1988

• Journal of the Korea Institute of Information and Communication Engineering
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• v.23 no.11
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• pp.1414-1419
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• 2019

Patent indicators were used to analyze the movements of local industries in order to derive blank technologies due to rapid changes in technology in the 4th Industrial Revolution and to discover promising technologies. Currently, Changwon-si is gathering a lot of technical information to develop hydrogen electric vehicle technology as a future regional flagship industry to discover it as a promising technology in the future. Collecting technical information has many problems in terms of time and cost due to classification methods, technical trends, and similar technologies. Therefore, a systematic classification of technical information and a method for easily deriving technical trends are needed. In this paper, we analyzed the blank technology and promising technology trends for the future core industries of the region through the method of measuring the growth rate of patents and the frequency of patent application through the patent indicators.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.36 no.11
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• pp.1094-1103
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• 2008

A fuel specific detonation wave in a pipe propagates with a predictable wave velocity. This internal detonation wave speed determines the level of flexural wave excitation of pipes and the possibility of resonant response leading to a large displacement. In this paper, we present particular solutions of displacements and the resonance conditions for internally loaded pipe structures. These analytical results are compared to numerical simulations obtained using a hydrocode(multi-material blast wave analysis tool). We expect to identify potential explosion hazards in the general power industries.