% % This file was created by the TYPO3 extension % bib % --- Timezone: CET % Creation date: 2024-03-28 % Creation time: 14-29-47 % --- Number of references % 25 % @Article { MarschallWBE2023, title = {On modelling of artefact instability in interlaboratory comparisons}, journal = {Metrologia}, year = {2023}, month = {6}, day = {26}, tags = {8.4,8.42,KC,Messunsicherheit}, state = {accepted}, DOI = {10.1088/1681-7575/ace18f}, author = {Marschall, M and W{\"u}bbeler, G and Borys, M and Elster, C} } @Article { WuebbelerBHE2018, title = {Maintaining consensus for the redefined kilogram}, journal = {Metrologia}, year = {2018}, month = {9}, day = {7}, volume = {55}, number = {5}, pages = {722}, tags = {8.4,8.42,KC}, DOI = {10.1088/1681-7575/aadb6b}, author = {W{\"u}bbeler, G and Bettin, H and H{\"a}rtig, F and Elster, C} } @Article { SchachtschneiderFSABBBBKKLLMPRSSWWSE2018, title = {Interlaboratory comparison measurements of aspheres}, journal = {Measurement Science and Technology}, year = {2018}, month = {4}, day = {9}, volume = {29}, number = {5}, pages = {055010}, tags = {8.4, 8.42, KC, Form}, DOI = {10.1088/1361-6501/aaae96}, author = {Schachtschneider, R and Fortmeier, I and Stavridis, M and Asfour, J and Berger, G and Bergmann, R B and Beutler, A and Bl{\"u}mel, T and Klawitter, H and Kubo, K and Liebl, J and L{\"o}ffler, F and Mee{\ss}, R and Pruss, C and Ramm, D and Sandner, M and Schneider, G and Wendel, M and Widdershoven, I and Schulz, M and Elster, C} } @Article { BodnarE2016, title = {Assessment of vague and noninformative priors for Bayesian estimation of the realized random effects in random-effects meta-analysis}, journal = {AStA Advances in Statistical Analysis}, year = {2018}, month = {1}, day = {31}, volume = {102}, number = {1}, pages = {1--20}, tags = {8.42,KC,Unsicherheit}, DOI = {10.1007/s10182-016-0279-7}, author = {Bodnar, O and Elster, C} } @Article { BodnarLAPE2017, title = {Bayesian estimation in random effects meta-analysis using a non-informative prior}, journal = {Statistics in Medicine}, year = {2017}, month = {2}, day = {1}, volume = {39}, number = {2}, pages = {378--399}, tags = {8.4,8.42,KC,Unsicherheit}, ISSN = {1097-0258}, DOI = {10.1002/sim.7156}, author = {Bodnar, O and Link, A and Arendack{\'a}, B and Possolo, A and Elster, C} } @Article { WrightTMWBE2016, title = {Transfer standard uncertainty can cause inconclusive inter-laboratory comparisons}, journal = {Metrologia}, year = {2016}, month = {10}, day = {20}, volume = {53}, number = {6}, pages = {1243}, keywords = {8.42,8.4,KC}, tags = {8.42,8.4,KC}, DOI = {10.1088/0026-1394/53/6/1243}, author = {Wright, J and Toman, B and Mickan, B and W{\"u}bbeler, G and Bodnar, O and Elster, C} } @Article { WubbelerBE2016, title = {Bayesian hypothesis testing for key comparisons}, journal = {Metrologia}, year = {2016}, month = {7}, day = {18}, volume = {53}, number = {4}, pages = {1131--1138}, keywords = {8.42,KC}, tags = {8.42,KC}, DOI = {10.1088/0026-1394/53/4/1131}, author = {W{\"u}bbeler, G and Bodnar, O and Elster, C} } @Article { Wubbeler2015, title = {Explanatory power of degrees of equivalence in the presence of a random instability of the common measurand}, journal = {Metrologia}, year = {2015}, month = {1}, day = {3}, volume = {52}, number = {2}, pages = {400--405}, tags = {8.42, Unsicherheit, KC}, web_url = {http://iopscience.iop.org/article/10.1088/0026-1394/52/2/400}, publisher = {IOP Publishing}, language = {en}, ISSN = {0026-1394}, DOI = {10.1088/0026-1394/52/2/400}, author = {W{\"u}bbeler, G and Bodnar, O and Mickan, B and Elster, C} } @Article { Spinelli2014, title = {Determination of reference values for optical properties of liquid phantoms based on Intralipid and India ink}, journal = {Biomedical optics express}, year = {2014}, volume = {5}, number = {7}, pages = {2037--53}, abstract = {A multi-center study has been set up to accurately characterize the optical properties of diffusive liquid phantoms based on Intralipid and India ink at near-infrared (NIR) wavelengths. Nine research laboratories from six countries adopting different measurement techniques, instrumental set-ups, and data analysis methods determined at their best the optical properties and relative uncertainties of diffusive dilutions prepared with common samples of the two compounds. By exploiting a suitable statistical model, comprehensive reference values at three NIR wavelengths for the intrinsic absorption coefficient of India ink and the intrinsic reduced scattering coefficient of Intralipid-20{\%} were determined with an uncertainty of about 2{\%} or better, depending on the wavelength considered, and 1{\%}, respectively. Even if in this study we focused on particular batches of India ink and Intralipid, the reference values determined here represent a solid and useful starting point for preparing diffusive liquid phantoms with accurately defined optical properties. Furthermore, due to the ready availability, low cost, long-term stability and batch-to-batch reproducibility of these compounds, they provide a unique fundamental tool for the calibration and performance assessment of diffuse optical spectroscopy instrumentation intended to be used in laboratory or clinical environment. Finally, the collaborative work presented here demonstrates that the accuracy level attained in this work for optical properties of diffusive phantoms is reliable.}, keywords = {Medical optics instrumentation,Photon migration,Turbid media}, tags = {8.42,KC}, web_url = {http://www.osapublishing.org/viewmedia.cfm?uri=boe-5-7-2037{\&}seq=0{\&}html=true}, publisher = {Optical Society of America}, language = {EN}, ISSN = {2156-7085}, DOI = {10.1364/BOE.5.002037}, author = {Spinelli, L and Botwicz, M and Zolek, N and Kacprzak, M and Milej, D and Sawosz, P and Liebert, A and Weigel, U and Durduran, T and Foschum, F and Kienle, A and Baribeau, F and Leclair, S and Bouchard, J-P and Noiseux, I and Gallant, P and Mermut, O and Farina, A and Pifferi, A and Torricelli, A and Cubeddu, R and Ho, H-C and Mazurenka, M and Wabnitz, H and Klauenberg, K and Bodnar, O and Elster, C and B{\'e}nazech-Lavou{\'e}, M and B{\'e}rub{\'e}-Lauzi{\`e}re, Y and Lesage, F and Khoptyar, D and Subash, A A and Andersson-Engels, S and Di Ninni, P and Martelli, F and Zaccanti, G} } @Article { Bodnar2014, title = {On the adjustment of inconsistent data using the Birge ratio}, journal = {Metrologia}, year = {2014}, volume = {51}, number = {5}, pages = {516--521}, tags = {8.42,KC,Regression, Unsicherheit}, web_url = {http://iopscience.iop.org/article/10.1088/0026-1394/51/5/516}, publisher = {IOP Publishing}, language = {en}, ISBN = {doi:10.1088/0026-1394/51/5/516}, ISSN = {0026-1394}, DOI = {10.1088/0026-1394/51/5/516}, author = {Bodnar, O and Elster, C} } @Article { Jousten2013, title = {Final report of key comparison CCM.P-K12 for very low helium flow rates (leak rates)}, journal = {Metrologia}, year = {2013}, volume = {50}, number = {1A}, pages = {07001--07001}, tags = {8.42,KC}, web_url = {http://iopscience.iop.org/article/10.1088/0026-1394/50/1A/07001}, publisher = {IOP Publishing}, language = {en}, ISSN = {1681-7575}, DOI = {10.1088/0026-1394/50/1A/07001}, author = {Jousten, K and Arai, K and Becker, U and Bodnar, O and Boineau, F and Fedchak, J A and Gorobey, V and Jian, W and Mari, D and Mohan, P and Setina, J and Toman, B and Vivcar, M and Yan, Y H} } @Article { Bodnar2013a, title = {Application of Bayesian model averaging using a fixed effects model with linear drift for the analysis of key comparison CCM.P-K12}, journal = {Measurement Techniques}, year = {2013}, volume = {56}, number = {6}, pages = {584--590}, tags = {8.42,Bayes,KC}, web_url = {http://link.springer.com/10.1007/s11018-013-0249-3}, ISSN = {0543-1972}, DOI = {10.1007/s11018-013-0249-3}, author = {Bodnar, O and Link, A and Klauenberg, K and Jousten, K and Elster, C} } @Article { Elster2013, title = {Analysis of key comparison data: critical assessment of elements of current practice with suggested improvements}, journal = {Metrologia}, year = {2013}, volume = {50}, number = {5}, pages = {549--555}, tags = {8.42,Bayes,KC}, web_url = {http://iopscience.iop.org/article/10.1088/0026-1394/50/5/549}, publisher = {IOP Publishing}, language = {en}, ISSN = {0026-1394}, DOI = {10.1088/0026-1394/50/5/549}, author = {Elster, C and Toman, B} } @Article { Lira2012, title = {Analysis of Key Comparisons Incorporating Knowledge About Bias}, journal = {IEEE Transactions on Instrumentation and Measurement}, year = {2012}, volume = {61}, number = {8}, pages = {2079--2084}, abstract = {A method is proposed for analyzing key comparison data. It is based on the assumption that each laboratory participating in the comparison exercise obtains independent and consistent estimates of the measurand and that, in addition, each laboratory provides an estimate of the quantity that collects all systematic effects that the laboratory took into account. The unknown value of the latter quantity, subtracted from its estimate, is defined as the laboratory's bias. The uncertainties associated with the estimates of the measurand and with the vanishing biases' estimates are also assumed to be reported. In this paper, we show that the information provided in this way may be of help for judging the performances of the laboratories in their correction of systematic effects. This is done by developing formulas for the final (consensus) estimates and uncertainties of the measurand and of the biases. Formulas for the final estimates and uncertainties of the pairwise differences between the biases are also developed. An example involving simulated key comparison data makes apparent the benefits of the proposed approach.}, keywords = {Atmospheric measurements,Bayesian methods,Bismuth,Gaussian distribution,Laboratories,Measurement uncertainty,Particle measurements,Systematics,Uncertainty,laboratory bias estimation,measurement errors,measurement uncertainty,performance evaluation,statistical analysis,systematic effect,vanishing bias estimation}, tags = {8.42,KC}, web_url = {http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6189781}, ISSN = {0018-9456}, DOI = {10.1109/TIM.2012.2193690}, author = {Lira, I and Chunovkina, A G and Elster, C and W{\"o}ger, W} } @Article { Toman2012, title = {Alternative analyses of measurements of the Planck constant}, journal = {Metrologia}, year = {2012}, volume = {49}, number = {4}, pages = {567--571}, tags = {8.42,Bayes,KC}, web_url = {http://iopscience.iop.org/article/10.1088/0026-1394/49/4/567}, publisher = {IOP Publishing}, language = {en}, ISSN = {0026-1394}, DOI = {10.1088/0026-1394/49/4/567}, author = {Toman, B and Fischer, J and Elster, C} } @Article { Elster2010, title = {Analysis of key comparisons: estimating laboratories' biases by a fixed effects model using Bayesian model averaging}, journal = {Metrologia}, year = {2010}, volume = {47}, number = {3}, pages = {113--119}, tags = {8.42,Bayes,KC}, web_url = {http://iopscience.iop.org/article/10.1088/0026-1394/47/3/001}, publisher = {IOP Publishing}, language = {en}, ISSN = {0026-1394}, DOI = {10.1088/0026-1394/47/3/001}, author = {Elster, C and Toman, B} } @Article { Elster2010a, title = {Linking of a RMO key comparison to a related CIPM key comparison using the degrees of equivalence of the linking laboratories}, journal = {Metrologia}, year = {2010}, volume = {47}, number = {1}, pages = {96--102}, tags = {8.42,KC}, web_url = {http://iopscience.iop.org/article/10.1088/0026-1394/47/1/011}, publisher = {IOP Publishing}, language = {en}, ISSN = {0026-1394}, DOI = {10.1088/0026-1394/47/1/011}, author = {Elster, C and Chunovkina, A G and W{\"o}ger, W} } @Article { Chunovkina2009, title = {Evaluating systematic differences between laboratories in interlaboratory comparisons}, journal = {Measurement Techniques}, year = {2009}, volume = {52}, number = {7}, pages = {788--793}, tags = {8.42,KC}, web_url = {http://link.springer.com/10.1007/s11018-009-9340-1}, ISSN = {0543-1972}, DOI = {10.1007/s11018-009-9340-1}, author = {Chunovkina, A G and Elster, C and Lira, I and W{\"o}ger, W} } @Article { Chunovkina2008, title = {Analysis of key comparison data and laboratory biases}, journal = {Metrologia}, year = {2008}, volume = {45}, number = {2}, pages = {211--216}, tags = {8.42,KC}, web_url = {http://iopscience.iop.org/article/10.1088/0026-1394/45/2/010}, publisher = {IOP Publishing}, language = {en}, ISSN = {0026-1394}, DOI = {10.1088/0026-1394/45/2/010}, author = {Chunovkina, A G and Elster, C and Lira, I and W{\"o}ger, W} } @Article { Martens2006, title = {Final report on the key comparison EUROMET.AUV.V-K1}, journal = {Metrologia}, year = {2006}, volume = {43}, number = {1A}, pages = {09002-09002}, tags = {8.42,Dynamik,KC}, publisher = {IOP Publishing}, DOI = {10.1088/0026-1394/43/1A/09002}, author = {von Martens, H-J and Elster, C and Link, A and T{\"a}ubner, A and Bruns, T} } @Article { Elster2005, title = {Analysis of Key Comparison Data: Unstable Travelling Standards}, journal = {Measurement Techniques}, year = {2005}, volume = {48}, number = {9}, pages = {883--893}, tags = {8.42,KC}, web_url = {http://link.springer.com/10.1007/s11018-005-0239-1}, ISSN = {0543-1972}, DOI = {10.1007/s11018-005-0239-1}, author = {Elster, C and W{\"o}ger, W and Cox, M G} } @Article { Martens2004, title = {Linking the results of the regional key comparison APMP.AUV.V-K1 to those of the CIPM key comparison CCAUV.V-K1}, journal = {Metrologia}, year = {2004}, volume = {41}, number = {1A}, pages = {09002}, abstract = {During 1996 and 1997, eight national metrology institutes (NMI) took part in a vibration accelerometer comparison, identifier APMP.AUV.V-K1 [http://www.bipm.org/utils/common/pdf/final_reports/AUV/V-K1/APMP.AUV.V-K1.pdf] . Two NMIs ultimately withdrew from the comparison and the results of the remaining six NMIs have been approved by the CCAUV. Four NMIs subsequently took part in the 2001 CIPM key comparison for the same quantity, identifier CCAUV.V-K1. The results of these four CIPM participants have been used to link the results of the remaining two NMIs to the results in the CIPM key comparison using the reference frequency of 160 Hz. The CCAUV nominated the PTB to propose the methodology for the link and subsequently approved the linked results as presented in this report. The degrees of equivalence between each result and the key comparison reference value (KCRV), and between each NMI have been calculated and the results are given in the form of a matrix and graph for six NMIs. As two results from the APMP can now be linked to the published CCAUV.V-K1 comparison [http://www.iop.org/EJ/abstract/0026-1394/40/1A/09001] , the updated graph for the key comparison database is also given. Main text. To reach the main text of this paper, click on Final Report [http://www.bipm.org/utils/common/pdf/final_reports/AUV/V-K1/CCAUV.V-K1_APMP.AUV.V-K1.pdf] . The final report has been peer-reviewed and approved for publication by the CCAUV, according to the provisions of the Mutual Recognition Arrangement (MRA).}, tags = {8.42,KC}, web_url = {http://stacks.iop.org/0026-1394/41/i=1A/a=09002}, DOI = {10.1088/0026-1394/41/1A/09002}, author = {von Martens, H-J and Elster, C and Link, A and W{\"o}ger, W and J Allisy, P} } @Article { Elster2003, title = {Proposal for linking the results of CIPM and RMO key comparisons}, journal = {Metrologia}, year = {2003}, volume = {40}, number = {4}, pages = {189}, abstract = {A procedure for linking the results of a Regional Metrology Organisation (RMO) key comparison to those of a related Comit{\'e} International des Poids et Mesures (CIPM) key comparison is proposed. The RMO results are linked to the CIPM results by a factor which is determined as the ratio of the CIPM key comparison reference value and the weighted mean of the RMO results of the linking laboratories. Correlations of the results of the linking laboratories in the two comparisons are taken into account. The uncertainties associated with the linked RMO results and the degrees of equivalence (DOEs) are explicitly given. The influence of correlations of the results of the linking laboratories in both comparisons is examined. It is shown that these correlations can decrease the linking uncertainty, whereas DOEs are expected to be influenced less. The proposed linking procedure is illustrated by its application to linking the results of a recent CIPM key comparison on accelerometer calibrations to that of a corresponding RMO key comparison.}, tags = {8.42,KC}, web_url = {http://stacks.iop.org/0026-1394/40/i=4/a=308}, DOI = {10.1088/0026-1394/40/4/308}, author = {Elster, C and Link, Alfred and W{\"o}ger, W} } @Article { Elster2001, title = {Model-based analysis of key comparisons applied to accelerometer calibrations}, journal = {Measurement Science and Technology}, year = {2001}, volume = {12}, number = {10}, pages = {1672}, abstract = {The concept of a model-based analysis of key comparisons is proposed and illustrated by applying it to data from a regional key comparison of accelerometer calibrations on a scale of frequencies. A physical model of the frequency dependence of the accelerometers' sensitivities is used to calculate reference values. The parameters of the physical model are determined by weighted least squares, and the resulting model is shown to conform with the data. Uncertainties associated with the reference values calculated by the physical model are smaller than those associated with reference values obtained by standard analysis. This can lead to a more favourable assessment of the degree of equivalence of single laboratory measurement values as expressed by calculated E n -numbers. The degree of equivalence of single laboratory measurement values is quantitatively calculated by both model-based analysis and standard analysis, and the results obtained and their differences are discussed.}, tags = {8.42,KC}, web_url = {http://stacks.iop.org/0957-0233/12/i=10/a=308}, DOI = {10.1088/0957-0233/12/10/308}, author = {Elster, C and Link, A and von Martens, H-J} } @Article { Elster2001a, title = {Analysis of key comparison data: assessment of current methods for determining a reference value}, journal = {Measurement Science and Technology}, year = {2001}, volume = {12}, number = {9}, pages = {1431}, abstract = {The degree of equivalence of national measurement standards is established by means of key comparisons. The analysis of data from a key comparison requires the determination of a reference value, which is then used to express the degree of equivalence of the national measurement standards. Several methods for determining a reference value are available and these methods can lead to different results. In this study current methods for determining a reference value are compared. In order to quantitatively assess the quality of performance, the methods are applied to a large set of simulated key comparison data. The simulations refer to several realistic scenarios, including correlated measurements. Large differences in the results can occur and none of the methods performs best in every situation. We give some guidance for selecting an appropriate method when assumptions about the reliability of quoted uncertainties can be made.}, tags = {8.42,KC}, web_url = {http://stacks.iop.org/0957-0233/12/i=9/a=308}, DOI = {10.1088/0957-0233/12/9/308}, author = {Elster, C and Link, A} }