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Author: nien zhang

Displaying records 21 to 30 of 64 records.
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21. Effects of Scanner Height on Fingerprint Capture
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7382
Published: 6/27/2007
Authors: Mary Frances Theofanos, Shahram Orandi, Ross J Micheals, Brian C Stanton, Nien F Zhang
Abstract: Although there is widespread deployment of biometric technologies such as fingerprint systems, little attention is being paid to the human-computer interaction that such technologies involved. This report presents the results of a study that examined ...

22. Usability Testing of Ten-Print Fingerprint Capture
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7403
Published: 3/13/2007
Authors: Mary Frances Theofanos, Brian C Stanton, Shahram Orandi, Ross J Micheals, Nien F Zhang
Abstract: The Department of Homeland Security (DHS) and the United States Visitor and Immigrant Status Indicator Technology (US-VISIT) program are migrating from a two print capture process (left and right index fingers) to a ten-print slap fingerprint capture ...

23. An Application of Combining Results from Multiple Methods - Statistical Evaluation of Uncertainty for NIST SRM 1508a
Published: 11/1/2006
Authors: Susan Shu Cheng Tai, Adriana Hornikova, Nien F Zhang, Michael James Welch

24. Uncertainty Analysis for Virtual Cement Measurement
Published: 9/13/2006
Authors: Blaza Toman, Adriana Hornikova, Robert Charles Hagwood, Hung-Kung Liu, Nien F Zhang, Edward Joseph Garboczi, Jeffrey W Bullard
Abstract: Virtual measurements are the outputs of well-defined mathematical models based on theoretical principles and simulation algorithms. The VCCTL (Virtual Cement and Concrete Testing Laboratory) is a software system built by the Material and Construction ...

25. Development of a Serum-Based Standard Reference Material with Certified Values for Homocysteine and Folate
Published: 11/1/2005
Authors: Lorna Tregoning Sniegoski, Bryant C Nelson, Mary B Satterfield, Nien F Zhang, Adriana Hornikova, Michael James Welch, Christine M Pfeiffer

26. An Application of Combining Results from Multiple Methods|Statistical Evaluation of Uncertainty for NIST SRM 1508a
Published: 10/1/2005
Authors: Adriana Hornikova, Nien F Zhang, Michael James Welch, Susan Shu Cheng Tai
Abstract: NIST Standard Reference Materials (SRM) are certified reference materials that are developed at NIST and provided to laboratories (industry, government and academia) for assessment and improvement of measurement quality. SRM 1508a, is re-certified t ...

27. The Effect of Uncertainty Components Such as Recalibration on the Performance of Quality Control Charts
Published: 5/2/2005
Authors: P Winkel, Nien F Zhang
Abstract: Daily QC measurements of biochemical quantities were recorded during 4 to 5 months while methods and analyser showed no signs of malfunctioning. The time series of QC values were divided into subseries according to reagents or electrolyte diluent lo ...

28. Statistical Analysis of Key Comparisons with Linear Trends
Published: 8/1/2004
Authors: Nien F Zhang, Hung-Kung Liu, N Sedransk, W Strawderman
Abstract: A statistical analysis for Key Comparisons with linear trend is proposed. The approach has the advantage that it is consistent with the case in which there is no trend. The uncertainties for KCRV and the degrees of equivalence are also provided. As ...

29. CCEM-K5 Comparison of 50/60 Hz Power
Published: 7/1/2004
Authors: Nile M. Oldham, Thomas L Nelson, Nien F Zhang, H Liu
Abstract: Electrical standards of low-frequency (50/60 Hz) power at 15 National Metrology Institutes (NMI) were compared to establish the relationship between the electrical units at these laboratories. The results of this comparison are described. The differe ...

30. Serial Correlation of Quality Control Data -- On the Use of Proper Control Charts
Published: 6/1/2004
Authors: P Winkel, Nien F Zhang
Abstract: Biochemical quality control data have been reported to be autocorrelated. Serial correlation may increase the rate of false alarms and decrease that of true alarms if traditional control charts are used. In this paper, the times series were examine ...

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