Results 261 to 270 of about 521,158 (314)

Evaluation of a water phantom detector-applicator setup for independent experimental verification of ¹⁰⁶Ru ocular brachytherapy applicators. [PDF]

Med Phys
Dahlander S, Andrássy M, Frömberg D, Persson L, Tedgren ÅC.   +4 more
europepmc   +1 more source

Redefining Standard Measurement Uncertainty

Ukrainian Metrological Journal, 2022
GUM визначає стандартну невизначеність вимірювання як стандартне відхилення розподілу ймовірностей, що описує невизначеність, пов’язану з оцінкою вимірюваної величини, і визначає розширену невизначеність як кратну стандартній невизначеності.
Antonio Possolo, Olha Bodnar
core   +4 more sources

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Gas flow standards and their uncertainty

Metrologia, 2022
Abstract We review primary and working gas flow standards that are used to calibrate gas flow meters. For each type of primary standard, we describe the principles and practical considerations of its operation and describe one example implementation.
John D Wright, Shin-Ichi Nakao, Aaron N Johnson, Michael R Moldover   +3 more
openaire   +1 more source

Adoption of Standards under Uncertainty [PDF]

SSRN Electronic Journal, 2003
The presence of noise in compliance times may have a critical impact on the selection of new technological standards. A technically superior standard is not necessarily viable because an arbitrarily small amount of noise may render coordination on that standard impossible. The criterion for the viability of a standard is that the sum of "support ratios"
Michael Ostrovsky, Michael Schwarz
openaire   +1 more source

Uncertainty Evaluation of a Broadband Attenuation Standard

2004 Conference on Precision Electromagnetic Measurements, 2004
A standard step attenuator has been developed. It comprises a build-up chain of ten steps of power ratio measurement and operates in a frequency range of 10 MHz to 18 GHz. The overall system has a dynamic range of 90 dB and an expanded uncertainty of 0.006 dB (k=2).
Joo-Gwang Lee, Jeong-Hwan Kim, Jeong-Il Park, Ung-Taeg Kang   +3 more
openaire   +1 more source

Measure uncertainty in ultraviolet index standard

2011 IEEE 15th International Symposium on Consumer Electronics (ISCE), 2011
This paper follows International Standards Organization (ISO) by “Guide to the Expression of Uncertainty in Measurement, GUM”. In order to measure Ultraviolet Index (UVI) standard, it is necessary in calibration or test laboratory field norm on the authentication.
null Jen-Yu Shieh, null Zih-Yan Wang, null Song-Yuh Huang, null Song-Chi Huang, null Jia-Long Zhang   +4 more
openaire   +1 more source

Quantifying Model Uncertainty Using Measurement Uncertainty Standards

Volume 5: 37th Design Automation Conference, Parts A and B, 2011
There is always a deviation between a model prediction and the reality that the model intends to represent. The deviation is largely caused by the model uncertainty due to ignorance, assumptions, simplification, and other sources of lack of knowledge. Quantifying model uncertainty is a vital task and requires the comparison between model prediction and
Xiaoping Du, Harsheel Shah
openaire   +1 more source