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  2. Kibble balance - Wikipedia

    en.wikipedia.org/wiki/Kibble_balance

    For instance, in the basement of the NIST's Gaithersburg facility in 2009, when measuring the gravity acting upon Pt‑10Ir test masses (which are denser, smaller, and have a slightly lower center of gravity inside the Kibble balance than stainless steel masses), the measured value was typically within 8 ppb of 9.801 016 44 m/s 2. [25] [26] [27]

  3. National Institute of Standards and Technology - Wikipedia

    en.wikipedia.org/wiki/National_Institute_of...

    NIST had an operating budget for fiscal year 2007 (October 1, 2006 – September 30, 2007) of about $843.3 million. NIST's 2009 budget was $992 million, and it also received $610 million as part of the American Recovery and Reinvestment Act. [18] NIST employs about 2,900 scientists, engineers, technicians, and support and administrative personnel.

  4. Certified reference materials - Wikipedia

    en.wikipedia.org/wiki/Certified_reference_materials

    In addition, commercial producers adhering to criteria and protocols defined by NIST may use the trademark [13] "NIST traceable reference material" to designate certified reference materials with a well-defined traceability linkage to existing NIST standards for chemical measurements. [14] [15]

  5. National Conference on Weights and Measures - Wikipedia

    en.wikipedia.org/wiki/National_Conference_on...

    The Weights and Measures Law was first signed into law on March 2, 1799 by President John Adams. In 1905, a meeting of the states was held to address the challenges of regulating weights and measures. As a result, an agreement was made to convene annually to set national standards for voluntary adoption and implementation by the states.

  6. Text Retrieval Conference - Wikipedia

    en.wikipedia.org/wiki/Text_Retrieval_Conference

    The Text REtrieval Conference (TREC) is an ongoing series of workshops focusing on a list of different information retrieval (IR) research areas, or tracks. It is co-sponsored by the National Institute of Standards and Technology (NIST) and the Intelligence Advanced Research Projects Activity (part of the office of the Director of National Intelligence), and began in 1992 as part of the ...

  7. Traceability - Wikipedia

    en.wikipedia.org/wiki/Traceability

    Within a product's supply chain, traceability may be both a regulatory and an ethical or environmental issue. [3] Traceability is increasingly becoming a core criterion for sustainability efforts related to supply chains wherein knowing the producer, workers and other links stands as a necessary factor that underlies credible claims of social, economic, or environmental impacts. [4]

  8. Metrology - Wikipedia

    en.wikipedia.org/wiki/Metrology

    The NIST-4 Kibble balance, which is used to measure weight via electric current and voltage.With this instrument, the measurement of mass is no longer dependent on a defined mass standard and is instead dependent on natural physical constants.

  9. NIST (metric) - Wikipedia

    en.wikipedia.org/wiki/NIST_(metric)

    NIST is a method for evaluating the quality of text which has been translated using machine translation. Its name comes from the US National Institute of Standards and Technology . It is based on the BLEU metric, but with some alterations.

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