• Food Science and Industry
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• 제40권1호
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• pp.27-35
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• 2007

측정불확도란 시험결과에 대하여 측정량을 합리적으로 추정한 값들의 분산 특성을 나타내는 파라미터(parameter)로써 ILAC(국제시험소인정협력체) 등의 국제기구와의 측정결과에 대한상호인정 및 신뢰성 확보에 필수적인 요소이다. 국제표준(ISO/IEC 17025)에 맞는 시험분석 결과의 도출을 위해서는 먼저 소급성을 유지하고 그에 따른 불확도를 산출하여야 한다. 소급성은 실험의 모든 과정에 불확도를 가지고 끊기지 않는 비교연결을 통한 국제(국가)표준과 연관시키는 시스템으로, sampling에서 측정결과의 도출까지 소급성을 유지하는 것만이 측정결과의 신뢰성(정확 및 정밀)을 유지하는 최상의 시스템이다. Guide to the Expression of Uncertainty in Measurements(GUM)에 의한 불확도 계산 절차는 측정량(measurand)의 함수 표현, 입력량의 표준불확도(standard uncertainty)의 계산(표준편차, 평균의 표준편차), 합성표준불확도(combined uncertainty)의 계산, 확장불확도(expanded uncertainty)의 계산을 통한 통계적 추정을 하는 것이다. 오렌지 쥬스 중 카드뮴을 분석함에 있어서, 실험실에 대해서는 국제표준화(ISO17025) 시스템을 도입하고 분석시약 및 기기에 대하여 소급성을 유지하여, 분석결과의 신뢰성을 확보하기 위한 측정불확도를 산출하였다.

• Journal of Korean Library and Information Science Society
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• 제36권2호
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• pp.283-305
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• 2005

Data produced during scientific and technical activities usually have value as standard reference data (SRD) which is a well-documented numeric value assessed for reliability and accuracy. The main criteria in the evaluation for SRD is how well their production is documented including a sample preparation, measurement method, data processing and so on, other than reference data. SRD is represented as a certified numeric value with uncertainty. In this study, the SRD in the area of material properties was introduced to provide understanding of SRD and its evaluation method. Also the national SRD system was studied. The national SRD system is composed of the center for the SRD, the data centers, and the committee. The role and task of those components were studied. The legislational and systematic supports for the system were proposed in this study.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 한국전기전자재료학회 2004년도 하계학술대회 논문집 Vol.5 No.2
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• pp.1214-1217
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• 2004

현재 전기용량의 국가표준은 1 kHz, 1592 Hz에서만 유지 및 보급이 되고 있다. 그러나 전기용량 및 임피던스를 측정하는 브리지와 LCR meter들은 비교적 넓은 주파수 범위에서 측정이 가능하도록 생산이 되고 있다. 따라서 이러한 기기들의 교정은 실제적으로 사용되고 있는 주파수 전 영역이 아닌 1 kHz 만 되고 있어서 완전한 교정이라고 할 수 없다. 본 논문에서는 이를 해결하기위하여 임피던스 analyzer의 one-port 측정기술을 사용하여 4-terminal-pair(이하 4TP) 전기용량 표준기 각각의 terminal에서 임피던스를 필요 주파수에서 측정하고, 측정된 임피던스 matrix를 이용하여 4TP의 transfer 어드미턴스와 출력임피던스를 계산 하였다.

• Journal of the Korean Magnetics Society
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• 제14권6호
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• pp.201-206
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• 2004

The AC-DC magnetic field standard systems were constructed for the calibration of magnetometers for low magnetic field and the tests for low magnetic field characteristics of sensors and materials. In the range of 1 mT, the expanded uncertainty of dc is 8${\times}$10$\^$-6/, ac uncertainties are 0.16% in 0.1～1 kHz, 0.26% in 1～5 kHz, and 0.44% in 5～20 kHz. We have been participated in international key comparison(KC) to achieve the equality and the mutual agreement between standard institutes for the results of calibrations and tests. KRISS participating in ac-dc magnetic flux density of KC got equal level of uncertainty results compare with the advanced nations. It confirm that measurement ability of magnetic flux density is high level in the world.

• Proceedings of the Korea Technology Innovation Society Conference
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• 한국기술혁신학회 2015년도 추계학술대회 논문집
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• pp.580-593
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• 2015

The quality of life is emphasized as one of the important issue in modern society. Such attention to quality of life started getting more attention lately as it is coupled with the country's competitiveness. In spite the quality of life is very significant, the level of the quality of life in the country is not satisfactory. So, the purpose of this study was to analyze the Korean standard measuring technology in terms of the QOL. First, We identified constructs of the QOL on the basis of several studies to derive an analytical framework. Then, We analyzed the distribution of the measurement standard technology in the country in accordance with the framework. The results of the analysis, many of the current measurement technologies described it regardless of the quality of life. Even if the technologies are relevant. they showed a state biased to the economic QOL. This means that QOL was not considered in the measurement technology standard. Therefore the further improved will be needed.

• The Journal of the Acoustical Society of Korea
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• 제22권6호
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• pp.463-471
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• 2003

The results of the APMP (Asia Pacific Metrology Programme) regional intercomparison of acoustic calibrators were reviewed and analyzed. The artefacts used in intercomparison are a sound level calibrator and a pistonphone. The microphones used to measure the output pressure level are 1" and 1/2" standard microphones (LS1P, LS2P) as well as 1" and 1/2" reference microphones (WS1P/F, WS2P/F). The results obtained using standard microphones are satisfactory, but those obtained by the reference microphones, even though E/sub n/ values are within ±1.0, showed great deviations. Such results had come from the inaccurate calibration of reference microphones. By using the correct calibration results which were obtained by the recently established international standards, the new results were very similar to those of the foreign standard institutes.

• The Science & Technology
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• 제16권12호통권175호
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• pp.39-41
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• 1983

• Water for future
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• 제51권5호
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• pp.57-63
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• 2018

• The Science & Technology
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• 제19권2호통권201호
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• pp.52-53
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• 1986

• The Science & Technology
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• 제14권11호통권150호
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• pp.38-40
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• 1981