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You searched on: Author: blaza toman Sorted by: date

Displaying records 1 to 10 of 42 records.
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1. Re-Certification of SRM 2492: Bingham Paste Mixture for Rheological Measurements
Series: Special Publication (NIST SP)
Report Number: 260-182
Published: 8/25/2015
Authors: Chiara F Ferraris, Alex Olivas, William F Guthrie, Blaza Toman
Abstract: Rheological measurements are often performed using a rotational rheometer. In this type of rheometer, the tested fluid is sheared between two surfaces, one of which is rotating [1]. Usually, an angular velocity is imposed on the fluid (through the ro ...

2. Pass / Fail / Inconclusive Criteria for Inter-Laboratory Comparisons
Published: 4/14/2015
Authors: Blaza Toman, Bodo Mickan, Gerd Wubbeler, Olha Bodnar, Clemens Elster, John D Wright
Abstract: Inter-laboratory comparisons use the best available transfer standards to check participants uncertainty analyses, identify underestimated uncertainty claims or measurement errors, and improve the global measurement system. For some measurands (e.g. ...

3. Critical Assessment of Current Practice in the Analysis of Key Comparison Data with Suggested Improvements
Published: 10/3/2013
Authors: Blaza Toman, Clemens Elster
Abstract: The current practice in the analysis of key comparison data is discussed and critically assessed. We argue that there is an ambiguity in the definition and meaning of the (unilateral) degrees of equivalence as defined in the MRA. This ambiguity can b ...

4. A Case Study of a Community Affected by the Witch and Guejito Fires: Report #2 ‹ Evaluating the Effects of Hazard Mitigation Actions on Structure Ignitions
Series: Technical Note (NIST TN)
Report Number: 1796
Published: 6/5/2013
Authors: Alexander Maranghides, Derek McNamara, William Mell, Jason Trook, Blaza Toman
Abstract: The National Institute of Standards and Technology (NIST) has a suite of research projects addressing risk reduction in Wildland Urban Interface (WUI) communities. The NIST WUI Team was invited by CAL FIRE to collect post incident data from the ...

5. Standard Reference Material 2366 for Measurement of Human Cytomegalovirus DNA
Published: 3/1/2013
Authors: Ross J Haynes, Margaret C Kline, Blaza Toman, Calum Scott, Paul Wallace, John M Butler, Marcia J Holden
Abstract: Cytomegalovirus (CMV) is one of a number of human viruses that are ubiquitous in human populations, generally cause little illness upon infecting healthy individuals, but can cause life threatening disease in immune-compromised individuals. An i ...

6. Final report of key comparison CCM.P-K12 for very low helium flow rates (leak rates)
Published: 1/1/2013
Authors: James A Fedchak, Blaza Toman, Karl Jousten
Abstract: Quantitative leak tests with vacuum technology have become an important tool in industry for safety and operational reasons and to meet environmental regulations. In lack of a relevant key comparison, so far, there are no calibration measurement ca ...

7. Experimental Design and Data Evaluation Considerations for Comparisons of Higher-Order Value-Assigned Materials
Published: 8/22/2012
Authors: David Lee Duewer, Hugo H. Gasca-Aragon, Katrice A Lippa, Blaza Toman
Abstract: The analysis of higher-order value-assigned materials (HOVAMs) such as certified reference materials (CRMs) and value-assigned proficiency testing materials can help assess the equivalence of chemical measurement processes. When two or more such mat ...

8. Alternative Analyses of Measurements of the Planck Constant
Published: 7/5/2012
Author: Blaza Toman
Abstract: We compare different methods for the adjustment of the Planck constant using recent, inconsistent data. First we discuss the popular Birge ratio method. By stating the underlying statistical model we critically assess and modify this method. We the ...

9. An international assessment of the metrological equivalence of higher-order measurement services for creatinine in serum
Published: 4/2/2012
Authors: Johanna Camara, Katrice A Lippa, David Lee Duewer, Hugo H. Gasca-Aragon, Blaza Toman
Abstract: Background: The CCQM-K80 Key Comparison directly assessed the equivalence of many of the world‰s higher-order value-assigned materials (HOVAMs) for creatinine in human serum. This 2009 international study compared the certified values and uncertaint ...

10. A Bayesian Approach to the Evaluation of Comparisons of Individually Value-Assigned Reference Materials
Published: 3/3/2012
Author: Blaza Toman
Abstract: A new data analysis procedure is presented for the evaluation of comparisons of reference materials individually prepared and value-assigned by different organizations to measurements made in a single laboratory under repeatability measurements. Th ...

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Looking for a NIST Special Publication (NIST SP Series)? Place the series number and dash in the report number field (Example: 800-) and begin your search.

  • SP 250-XX: Calibration Services
  • SP 260-XX: Standard Reference Materials
  • SP 300-XX: Precision Measurement and Calibration
  • SP 400-XX: Semiconductor Measurement Technology
  • SP 480-XX: Law Enforcement Technology
  • SP 500-XX: Computer Systems Technology
  • SP 700-XX: Industrial Measurement Series
  • SP 800-XX: Computer Security Series
  • SP 823-XX: Integrated Services Digital Network Series