• Journal of Broadcast Engineering
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• v.22 no.1
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• pp.128-135
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• 2017

In this paper, the changes of broadcasting loudness before and after are measured for the major broadcasting channels according to the amendment of broadcasting law and enforcement of digital television broadcasting loudness technology standards. Before the implementation of digital television broadcasting loudness technology standards. all the channels to be measured were broadcast at a higher volume level than the technical standards. However, after the implementation, most of the channels to be measured were maintained at a loudness level suitable for the technical standards. However, some programs are inadequate to meet technical standards, requiring corrective action, and the need for additional research to improve the measurement method.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.9
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• pp.1634-1641
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• 2007

In this paper, We examine the point at issue of domestic telecommunications and standards. In Korea, since we can't lighten effectively the regulatory due to operate separately both of Regulations and Standards, we should convert regulation regulatory into standard regulatory through the correlation between Regulations and Standards. In the view of expected effect, practical use for consolidating the establishment and amendment of the national telecommunications standards, and making the consolidation plan of standardization Acts and practical use for making the correlation plan between the telecommunication regulations and standards.

• JOURNAL OF ELECTRICAL WORLD
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• s.292
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• pp.64-67
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• 2001

• JOURNAL OF ELECTRICAL WORLD
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• s.287
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• pp.56-62
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• 2000

• JOURNAL OF ELECTRICAL WORLD
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• s.293
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• pp.40-46
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• 2001

• JOURNAL OF ELECTRICAL WORLD
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• s.291
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• pp.52-59
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• 2001

• JOURNAL OF ELECTRICAL WORLD
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• s.294
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• pp.46-49
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• 2001

• Proceedings of the Korean Nuclear Society Conference
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• 2001.05a
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• pp.540.2-540
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• 2001

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2013.04a
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• pp.25-26
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• 2013

현재 국내의 침윤소화약제 기술기준은 심부화재 진압용 침윤소화약제의 기술기준인 '소화약제의 형식승인 및 제품검사의 기술기준 고시(2012-57호)'에서 물리적 기술기준인 표면장력에 대한 기준만 존재하며, 침윤소화약제의 성능평가 실험은 NFPA 18에서 명시하고 있는 실험방법으로 국한되어 있어 이를 통한 침윤소화약제의 실질적인 성능평가는 어려운 실정이다. 이 때문에 명확하고 구체적인 침윤소화약제의 성능평가 기법을 제시하기 위해 실험기기를 자체 개발하였으며, NFPA18의 침윤소화약제 성능평가와 자체 개발한 실험기기를 이용한 성능평가의 결과를 비교 분석하여 최적화된 성능평가 방법을 제시하고자 한다. 이에 앞서 본 연구에서는 NFPA 18상에 명시되어 있는 심부화재 테스트를 동일 조건으로 진행하여, 수돗물과 침윤소화약제의 성능 비교에 대한 변별력을 확인하였다.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.28 no.2
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• pp.113-119
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• 2017

In this paper, we have shown the performance analysis results of the LoRa low power wide area network under duty cycle local regulation in Korean RFID/USN frequency band. Especially, we analyzed uplink throughput and data transmission time of a single LoRa end device. From the analysis results, duty cycle regulation, in which a data transmission should be ended within 0.4 second, limits the performance of LoRa network. Therefore, it is necessary to revise Korea's duty cycle regulation referencing EU regulation in order to assess LoRa network in Korea.