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Displaying 10426 - 10450 of 13225

Digital Repository of Mathematical Formulae

October 17, 2014
Author(s)
Howard S. Cohl, Marjorie A. McClain, Bonita V. Saunders, Moritz Schubotz, Janelle Williams
… web. Using \mbox{MediaWiki} extensions and other existing technology (such as software and macro collections developed … Lecture Notes in Artificial Intelligence …

TEST AND CALIBRATION OF DISPLACEMENT MEASURING LASER INTERFEROMETERS

October 15, 2014
Author(s)
Jack A. Stone Jr.
… At the National Institute of Standards and Technology (NIST), we have a capability to calibrate and test … into accord with a new standard, ANSI/ASME B89.1.8-2011. In addition to quantifying length-proportional errors, our … maintained by NIST. The two interferometers are arranged in a back-to-back geometry that is compensated so as to …

Development and Application of an Updated Whole-Building Coupled Thermal, Airflow, and Contaminant Transport Simulation Program (TRNSYS/CONTAM)

July 23, 2014
Author(s)
William S. Dols, Wang Liangzhu, Steven J. Emmerich, Brian J. Polidoro
… developed by the National Institute of Standards and Technology. This paper describes the development of new CONTAM capabilities in support of an updated combined, multizone building heat … of the energy use related to airflow through entry doors in non-residential buildings. …

Extended Analysis of the Spectrum of Singly Ionized Chromium (Cr II)

July 23, 2014
Author(s)
Craig J. Sansonetti, Gillian Nave
… of the spectrum of singly-ionized chromium (Cr II) in the region 2850 Angstrom to 37900 Angstrom with the National Institute of Standards and Technology 2 m Fourier transform spectrometer. These data extend our previously reported observations in the near ultra-violet region. We present a comprehensive …

INTERNATIONAL COMPARISON OF KU-BAND STANDARD GAIN HORN CHARACTERIZATION

April 11, 2014
Author(s)
Jeffrey R. Guerrieri, David R. Novotny, Michael H. Francis, Jason B. Coder, Joshua A. Gordon
… supports interoperability of communication equipment in today’s world market. The National Institute of Standards and Technology (NIST) is the pilot National Measurement Institute … as extrapolation, far field and gain transfer, were used in this international comparison. The individual measurement …

Improvements in the characterization of actinides targets by low solid-angle counting

February 2, 2014
Author(s)
David M. Gilliam, Andrew T. Yue
… In a paper presented in the Proceedings of the 19th World Conference of the INTDS, … groups at NIST and the IRMM showed excellent agreement in characterization of actinide targets by alpha counting … techniques at NIST. Applications of this improved technology are expected to include improved NIST measurements …

Capture and isolation of highly-charged ions in a compact Penning trap: V12

December 4, 2013
Author(s)
Samuel Brewer, Nicholas D. Guise, Joseph Tan
… EBIT ion source at the National Institute of Standards and Technology (NIST). Highly-charged argon and neon ions … extracted with energies of up to 4000 eV/Q are captured in such traps with well depths of 4 eV/Q – 12 eV/Q. Here we discuss in detail the technique of slowing, capture, and storage of …

Sensors and Monitoring to Assess Grout and Vault Behavior for Performance Assessments

August 12, 2013
Author(s)
Kenneth A. Snyder, Jason Weiss
… grout monoliths, the National Institute of Standards and Technology (NIST) has performed a preliminary evaluation of … as cracking, however, could lead to significant changes in the overall vault or monolith performance. Measurement … used to detect the onset of cracks and to detect changes in the chemical are summarized in the context of a monitoring …

Effect of Losses on the Performance of an SU(1,1) Interferometer

June 4, 2012
Author(s)
Alberto M. Marino, Neil V. Corzo Trejo, Paul D. Lett
… the 1/n scaling characteristic of the Heisenberg limit. In addition, we show that under some conditions the SU(1,1) … experimentally reaching the Heisenberg limit with current technology. Possible implementations of the interferometer using four-wave mixing in atomic vapors and an atom interferometer in a …

Strain and Magnetic-Field Characterization of a Bronze-Route Nb 3 Sn ITER Wire: Benchmarking of Strain Measurement Facilities at NIST and University of Twente

June 1, 2012
Author(s)
Najib Cheggour, Arend Nijhuis, H J. Krooshoop, Xifeng Lu, Jolene D. Splett, Theodore C. Stauffer, Loren F. Goodrich, Matthew C. Jewell, Arnaud Devred, Y Nabara
… facilities at the National Institute of Standards and Technology (NIST) and the University of Twente. The critical … measured as a function of axial strain and magnetic field in liquid helium at both institutes. NIST used a Walters’ … apparatuses were remarkable, despite the many differences in their design and techniques. …

PROBING MATERIAL PROPERTIES WITH SHARP INDENTERS: A REVIEW

January 2, 2012
Author(s)
Brian R. Lawn, Robert F. Cook
… properties—elastic modulus, hardness, toughness, etc.—in all classes of materials. Indentation also provides unique … The utility of indentations as 'controlled flaws' in the context of strength of materials is outlined. The …

Re-optimized energy levels and Ritz wavelengths of 198Hg I

May 10, 2011
Author(s)
Alexander Kramida
… compiled at the National Institute of Standards and Technology (NIST) [E. B. Saloman, J. Phys. Chem. Ref. Data 35, 1519 (2006)]. In that compilation, the energy level values were optimized … of those measurements revealed large inconsistencies in the assessment of measurement uncertainties in the NIST …

NIST Workshop on Ontology Evaluation (NISTIR 7774)

April 1, 2011
Author(s)
Ram D. Sriram, Conrad E. Bock, Fabian M. Neuhaus, Evan K. Wallace, Mary C. Brady, Mark Musen, Joanne Luciano
… The National Institute for Standards and Technology sponsored a workshop in October, 2007, on the subject of ontology evaluation. An … of invited experts met for two days to discuss problems in measuring ontology quality. The workshop highlighted …

Quantifying Particle Shape in 3-D: Experimental and Mathematical Considerations

December 23, 2009
Author(s)
Edward Garboczi
… Quantifying the shape of particles in 3-D is a general problem and is important in many physical situations in particle technology. In the field of concrete, the 3-D shape of … Further Advances in X-ray Tomography for Geomaterials … Quantifying Particle Shape in 3-D: Experimental and Mathematical Considerations …

Comparison of the INMETRO and NIST Josephson Voltage Standards (part of the ongoing regional key comparison SIM.EM.BIPM-K10.b1)

October 10, 2009
Author(s)
Yi-hua Tang, Regis P. Landim, Afonso Edson, Victor Ferreira
… Standards (JVS) of the National Institute of Standards and Technology (NIST), USA and the National Institute of … and Industrial Quality (INMETRO), Brazil was made in June 2009. The process consisted of two comparisons, first … by the NIST CJVS. The results of the two comparisons were in agreement to within 1.1 nV and their mean indicated that …

Nanometrology Solutions Using an Ultra-High Resolution In-lens SEM

September 1, 2009
Author(s)
Michael T. Postek, Andras Vladar, John S. Villarrubia
… by the electron beam interactions of these small particles in secondary electron detection mode which dominate in the imaging. Such effects are minimized in the … Division of the National Institute of Standards and Technology (NIST) to develop infrastructural metrology and …
Displaying 10426 - 10450 of 13225
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