Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Charles D. Ehrlich"'
Publikováno v:
Metrologia. 55:716-721
Measurement units have historically been defined as quantities (i.e., specific properties) of objects, such as the mass of a particular piece of metal or the length of a particular rod. While the c ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34a21dd1e047e3e27bf5390eb3b23320
https://doi.org/10.1088/1681-7575/aad8d8
https://doi.org/10.1088/1681-7575/aad8d8
Autor:
Charles D. Ehrlich†
Publikováno v:
NCSLI Measure. 10:32-43
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9ebed98372094b17ba87fe07b5cd4ca
https://doi.org/10.1080/19315775.2015.11721745
https://doi.org/10.1080/19315775.2015.11721745
Autor:
Charles D. Ehrlich
Publikováno v:
Metrologia. 51:S145-S154
The Guide to the Expression of Uncertainty in Measurement (GUM) provided for the first time an international consensus on how to approach the widespread difficulties associated with conveying information about how reliable the value resulting from a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a969d778ba9a063d8375c2f099ffc85c
https://doi.org/10.1088/0026-1394/51/4/s145
https://doi.org/10.1088/0026-1394/51/4/s145
Publikováno v:
Journal of Physics: Conference Series. 1379:012004
The International Vocabulary of Metrology (VIM) is a foundational document of measurement science, with the ambition of providing a system of “basic and general concepts and associated terms” of metrology. Such a system has evolved with the evolu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c1b383973ab02fdba69ccc1e9d44934
https://doi.org/10.1088/1742-6596/1379/1/012004
https://doi.org/10.1088/1742-6596/1379/1/012004
Autor:
René Dybkaer, Charles D. Ehrlich
Publikováno v:
NCSLI Measure. 6:72-77
‘Measurement error’2 has historically been defined in the metrology community as a difference of ‘values,’ usually as a difference between a ‘measured value’ and a ‘reference value.’ The reference ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9675c75125000046c23a8eccd593696
https://doi.org/10.1080/19315775.2011.11721567
https://doi.org/10.1080/19315775.2011.11721567
Model for drag forces in the crevice of piston gauges in the viscous-flow and molecular-flow regimes
Publikováno v:
Metrologia. 36:565-570
A model for drag forces in the crevice of pneumatic piston gauges is presented. The model uses an interpolation function for momentum transfer between the piston and the cylinder mediated by the gas flowing in the crevice. The interpolation function
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d57acc3b25d607151077bd2590ffe9e
https://doi.org/10.1088/0026-1394/36/6/16
https://doi.org/10.1088/0026-1394/36/6/16
Autor:
Walter J. Bowers, Charles D. Ehrlich, Yueqin Cen, James W. Schmidt, J. C. Houck, Robert G. Driver, S A. Tison
Publikováno v:
Metrologia. 36:525-529
Primary pressure standards in the atmospheric pressure range are often established using mercury manometers. To a lesser extent, controlled-clearance dead-weight testers, in which one component (normally the piston) has been dimensionally measured, h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7aadc72b7b6a12f210b11d05a0ae84e
https://doi.org/10.1088/0026-1394/36/6/8
https://doi.org/10.1088/0026-1394/36/6/8
Publikováno v:
Journal of Research of the National Institute of Standards and Technology
There is a growing requirement for an internationally accepted system of recognition of measurement capabilities and relationships within and among countries, to facilitate seamless global commerce and trade. As a result, metrologists world-wide have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30f3f267aff917a7497fd59d3be352c1
https://doi.org/10.1088/0026-1394/34/6/6
https://doi.org/10.1088/0026-1394/34/6/6
Publikováno v:
Metrologia. 30:635-640
The elastic distortions of a special hydraulic piston gauge (PG27) operating at up to 28 MPa in simple, reentrant and controlled-clearance configurations were calculated by an iterative analytical technique. It was possible to determine the radial di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e62d2598020148c3bb36f68110e58b99
https://doi.org/10.1088/0026-1394/30/6/017
https://doi.org/10.1088/0026-1394/30/6/017