– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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BIPM news: Publications
See also BIPM papers published in the scientific literature:

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    Report of the CCT meeting (2017) [2017]  
28th meeting of the CCT (1-2 June 2017)

    Annual Report on Time Activities (2016) [2017]  
The BIPM Annual Report on Time Activities (2016) is now available on the BIPM website.

    Report of the CCM meeting (2017) [2017]  
16th meeting of the CCM (18-19 May 2017)

    BIPM Annual Review 2016/2017 [2017]  
The BIPM Annual Review 2016/2017 is now available online.

    Report of the October 2016 meeting of the CIPM [2017]  
The report of the CIPM's 105th meeting (2016) is now available online in both French and English

    Financial Report 2016 [2017]  
The Rapport Annuel aux Gouvernements des Hautes Parties Contractantes sur la situation administrative et financière du Bureau International des Poids et Mesures (2016) is now available online.

    Impact Factor of Metrologia up to 3.411 [2017]  
– As released in the Thomson Reuters Journal Citation Reports®.

    Report of the CCPR meeting (2016) [2017]  
23rd meeting of the CCPR (22-23 September 2016)

    Report of the BIPM-WADA Workshop (September 2016) [2016]  
For more information about the Workshop see http://www.bipm.org/en/conference-centre/bipm-workshops/bipm-wada-2016/.

    Report of the CCU meeting (2016) [2016]  
22nd meeting of the CCU (15-16 June 2016)

    Monographie BIPM-5 Volume 8 [2016]  
Tables of Radionuclides (Vol. 8 - A = 41 to 198)

    CIPM MRA Review: Final Report from the WG [2016]  
Recommendations from the Working Group on the Implementation and Operation of the CIPM MRA

    Report of the CCQM meeting (2016) [2016]  
22nd meeting of the CCQM (21-22 April 2016)

    Report of the CCAUV meeting (2015) [2016]  
10th meeting of the CCAUV (25-27 November 2015)

    Financial Report 2015 [2016]  
The Rapport Annuel aux Gouvernements des Hautes Parties Contractantes sur la situation administrative et financière du Bureau International des Poids et Mesures (2015) is now available online.

    Report of the CCL meeting (2015) [2016]  
16th meeting of the CCL (23-24 September 2015)

    BIPM Annual Review 2015 [2016]  
The BIPM Annual Review 2015 is now available online. This short Annual Review incorporates elements of the former 'Core Data' document and summarizes developments at the BIPM during 2015. It is complemented by extended reports of the achievements of each of the BIPM Departments which are available from our website.

    Metrologia: Impact Factor success [2016]  
We are delighted to announce Metrologia's highest ever Impact Factor: 2.500 for 2015.

    Annual Report on Time Activities (2015) [2016]  
The BIPM Annual Report on Time Activities (2015) is now available on the BIPM website.

    French version of the report of the CIPM meeting (Session II, October 2015) [2016]  
The report of the CIPM meeting (Session II, October 2015) is now available in French on the BIPM website

    New format for BIPM Circular T [2016]  
Circular T has been launched for 2016 in a new user-friendly format enabling readers to find related files and plots, and to track the calibration of time transfer equipment directly through links to the relevant reports.

    Report of the CIPM meeting (Session II, October 2015) [2016]  
The report of the CIPM meeting (Session II, October 2015) is now available on the BIPM website

    Report of the JCTLM meeting (2015) [2016]  
15th meeting of the JCTLM (3-4 December 2015)

    French version of the report of the CIPM meeting (Session I, March 2015) [2015]  
The report of the CIPM meeting (Session I, March 2015) is now available in French on the BIPM website

    Notification 2016 [2015]  
The formal Notification of contributions for 2016, listing the contributions due by Member States and the subscriptions due by Associates of the CGPM, is now available for download. An unofficial version in English is also available.

    Proceedings of the 25th meeting of the CGPM (2014) are now available [2015]  
The BIPM is pleased to announce that the Proceedings of the 25th meeting of the General Conference on Weights and Measures (CGPM), 18 to 20 November 2014, are now available for download.

    Metrologia: Focus on the Boltzmann constant [2015]  
This focus issue collates papers from the dozen or so research groups, from different laboratories all around the world, who are making contributions to the Boltzmann constant determinations. Guest Editors: Rod White (MSL) and Joachim Fischer (PTB).

    BIPM's expanding electronic archives [2015]  
The complete official reports of meetings of the CGPM and the CIPM as well as the Diplomatic documents of the Metre Conference 1875 are now available in searchable form, as are the BIPM's series of internal scientific reports, such as Rapports BIPM, Monographies BIPM and BIPM Working Party Notes.

    Report of the CIPM meeting (Session I, March 2015) [2015]  
The report of the CIPM meeting (Session I, March 2015) is now available on the BIPM website

    Report of the CCQM meeting (2015) [2015]  
21st meeting of the CCQM (20-21 April 2015)

    BIPM Annual Report on Time Activities (2014) [2015]  
BIPM Annual Report on Time Activities

    Report of the CCEM meeting (2015) [2015]  
29th meeting of the CCEM (12-13 March 2015)

    BIPM Core data 2014 [2015]  
BIPM Core data 2014

    Update of the Annotated VIM3 [2015]  
Latest update: 8 July 2015

    Rapport Annuel aux Gouvernements (2014) [2015]  
Rapport Annuel aux Gouvernements des Hautes Parties Contractantes sur la situation administrative et financière du Bureau International des Poids et Mesures (2014)

    Report of the CCPR meeting (2014) [2015]  
22nd meeting of the CCPR (17-18 September 2014)

    Impact Factor of Metrologia up to 2.041! [2015]  
– As released in the Thomson Reuters Journal Citation Reports®.

    2014 Director's Report published [2015]  
The 2014 Director's Report is now available in English on the BIPM website. It will be translated into French and made available as soon as possible on the website.

    Report of the November 2014 meeting of the CIPM [2015]  
The report of Session II of the CIPM's 103rd meeting (2014) is now available in English. The French version will follow as soon as possible.

    Update of the Annotated VIM3 [2015]  
Latest release: 17 February 2015

    Report of the JCTLM Executive Committee meeting (2014) [2015]  
13th meeting of the JCTLM Executive Committee (4-5 December 2014)

    Report of the CCRI meeting (2013) [2015]  
24th meeting of the CCRI (17 May 2013)

    The report of the March 2014 meeting of the CIPM is now available for download [2014]  
The report of Session I of the CIPM's 103rd meeting (2014) is now available in English. The French version will follow as soon as possible.

    Publication of the HTML version of VIM3 Definitions plus Informative Annotations [2014]  
This is an abridged version of the International vocabulary of metrology - Basic and general concepts and associated terms (VIM) (JCGM 200:2012, 3rd edition) (or VIM3), supplemented by annotations for some of the entries. It is an online, interactively browsable document produced by Working Group 2 of the Joint Committee for Guides in Metrology (JCGM-WG2)

    Report of the CCT meeting (2014) [2014]  
27th meeting of the CCT (21-23 May 2014)

    New edition of BIPM e-News [July 2014]  
This fifth issue of BIPM e-News is accompanied by a four-page supplement presenting BIPM core data for 2013.

    Report of the CCQM meeting (2014) [2014]  
20th meeting of the CCQM (10-11 April 2014)

    Annual report to the Governments of the High Contracting Parties on the administrative and financial situation of the BIPM in 2013 now available [2014]  
The 2013 Annual Report is now available on the BIPM website. The final printed report will be distributed later in the year as a single pack including the minutes of the 2013 meeting of the CIPM and the 2013 Director's Report in both French and English.

    Supplement to the SI Brochure [2014]  
We draw your attention to Supplement 2014, which lists the most significant changes to be made to the 8th edition of the SI Brochure (2006). The web version of the SI Brochure has been updated accordingly.

    Report of the CCAUV meeting (2013) [2014]  
9th meeting of the CCAUV (29-31 October 2013)

    Report of the CCEM meeting (2013) [2014]  
28th meeting of the CCEM (14-15 March 2013)

    Draft Chapters 1, 2 and 3 of the 9th edition of the SI brochure are now available on the BIPM website [2013]  
This draft document is made available in order to encourage communication, awareness and debate on the possible revision of the SI. The document will continue to evolve over the coming years.

    Report of the CCU meeting (2013) [2013]  
21st meeting of the CCU (11-12 June 2013)

    Report of the CCQM meeting (2013) [2013]  
19th meeting of the CCQM (18-19 April 2013)

    Report of the CCM meeting (2013) [2013]  
14th meeting of the CCM (21-22 February 2013)

    Compendium of main rules and practices applicable to the BIPM [2013]  
We are pleased to announce that, as requested by the CIPM at its meeting in June 2013, the Compendium is now available on the BIPM website.

    Report of the CCL meeting (2012) [2013]  
15th meeting of the CCL (19-20 September 2012)

    New edition of BIPM e-News [2013]  
See also the BIPM Core data 2012.

    Impact Factor of Metrologia up to 1.902 [2013]  
As released in the Thomson Reuters Journal Citation Reports®, the 2012 Impact Factor for Metrologia is 1.902.

    Report of the CCPR meeting (2012) [2013]  
21st meeting of the CCPR (23-24 February 2012)

    2012 reports now available [2013]  
The 2012 Director's Report and the minutes of the 2012 meeting of the CIPM are now available in English on the BIPM website. Both reports will be translated into French and made available as soon as possible on the website, and the final printed reports distributed later in the year as a single pack including also the Rapport Annuel will be in both French and English.

    UTCr's 1st birthday [2013]  
"Rapid UTC" (UTCr) is one year old already. The first results of the pilot experiment aimed at providing access to UTC on a shorter timescale than the monthly Circular T were published on 29 February 2012, and the BIPM Time Department has been publishing UTCr results on a weekly basis since then. One year into the pilot experiment, UTCr has reached the expected quality and official publication is expected to start in mid-2013.

    Report of the CCAUV meeting (2012) [2013]  
8th meeting of the CCAUV (13-14 June 2012)

    Circular T celebrates its 25th birthday [2013]  
The 300th issue of Circular T was published by the BIPM Time Department on 10 January 2013, after 25 years of uninterrupted monthly publication.

    New issue of the BIPM e-News [Dec. 2012]  

    Publication of JCGM 106:2012 [2012]  
Document JCGM 106:2012 "Evaluation of measurement data – The role of measurement uncertainty in conformity assessment", produced by the JCGM Working Group on the Expression of Uncertainty in Measurement (JCGM-WG1), was approved by the JCGM Member Organizations in October 2012. It constitutes the fourth of the series of documents accompanying the GUM.

    Launch of BIPM e-News [June 2012]  
We are pleased to present the first issue of BIPM e-News, which now brings together into a single publication topics previously included in the BIPM Bulletin and the KCDB Newsletter. BIPM e-News will be published twice a year and will highlight some key recent issues and achievements. We hope that the readership of the former BIPM Bulletin and KCDB Newsletter will benefit from the comprehensive coverage provided by BIPM e-News, which will be circulated by email as well as being made available on the BIPM website.

    Publication of JCGM 200:2012 [2012]  
This corrected version of the 3rd edition of the VIM cancels and replaces JCGM 200:2008.

    Special issue of Metrologia on Neutron Metrology [2011]  
This special issue completes Metrologia's trilogy on measurements in Ionizing Radiation, comprising issues on Radionuclide Metrology, Dosimetry, and Neutron Metrology. This essential reference provides a broad overview of neutron metrology, aiming to give both a clear introduction to the novice as well as an up-to-date description of the latest scientific developments for the more experienced reader.
Guest editors: David Thomas (NPL), Ralf Nolte (PTB) and Vincent Gressier (IRSN)

    KCDB Newsletter [2011]  
Issue 16 (December 2011) is now available

    Results of the first direct comparison of the quantum Hall effect in epitaxial graphene and gallium-arsenide have been published [2011]  
A future redefinition of the units for mass and current in terms of the Planck constant h and electron charge e, respectively, will depend on the accuracy of the relationships that provide a link between these constants and measurable macroscopic quantities. The quantum Hall effect (QHE) is an example of such a relationship, whereby the Hall resistance shows a series of quantized plateaux with values h/ie2, where i is an integer, independent of the material. The first direct comparison of the QHE in epitaxial graphene and gallium-arsenide was carried out jointly by the NPL (UK), the BIPM and researchers from Swedish and UK universities. The quantized resistance values were found to be identical in graphene and gallium-arsenide within the relative standard uncertainty of the measurement of 8.6 × 10−11 providing proof of the universality of the QHE in different materials.

    Special issue of Metrologia on Modern Applications of Timescales [2011]  
This special issue of Metrologia reviews timescales in use today, including the internationally recognized references as well as some other scales adapted to specific applications. It discusses new and future developments and presents the - sometimes complex - procedures for making international recommendations.
Guest editors: E.F. Arias, W. Lewandowski (BIPM)

    Special issue of Metrologia on International determination of the Avogadro constant [2011]  
This special issue of Metrologia collects papers about the results of an international research project aimed at the determination of the Avogadro constant, NA, by counting the atoms in a silicon crystal highly enriched with the isotope 28Si.
Guest editors: Enrico Massa and Arnold Nicolaus

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