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Displaying 1076 - 1100 of 1947

Guide to Computer Security Log Management

September 13, 2006
Author(s)
Karen A. Scarfone, Murugiah Souppaya
The National Institute of Standards and Technology (NIST) developed this document in furtherance of its statutory responsibilities under the Federal Information security Management Act (FISMA) of 2002, Public Law 107-347. This publication seeks to assist

Modelling Polycrystalline Solidification Using Phase Field Theory

October 1, 2004
Author(s)
L Granasy, T Pusztai, James A. Warren
We review recent advances made in phase field modelling of polycrystalline solidification. Areas covered include the development of theory from early approaches that allow for only a few crystal orientations, to the latest models relying on a continuous

CCT Key Comparison No 1 (CCT-K1): Realisations of the ITS-90, 0.65 K to 24.5561 K, Using Rhodium-Iron Resistance Thermometers

June 1, 2004
Author(s)
R L. Rusby, Christopher W. Meyer, Weston L. Tew, D I. Head, K D. Hill, O Tamura, P A. de Groot, B Fellmuth, A Storm, A Peruzzi, J Engert, D N. Astrov, Y Dedikov, G A. Kytin
At its meeting in 1996 the CCT initiated five Key Comparisons to test the equivalence of realisations of the ITS-90 between National Measurement Institutes. CCT-K1 covers the temperature range from 0.65 K to 24.5561 K, in which the ITS-90 is defined by

CIE Fundamentals for Color Measurements

September 30, 2000
Author(s)
Yoshi Ohno
The paper first overviews the CIE system of colorimetry, covering CIE 1931 color matching functions, XYZ tristimulus values, the x, y diagram, the 1976 u', v' diagram, and the evolvement of CIELUV and CIELAB color spaces and color difference formulae. The

Laser Focused Atomic Deposition

November 5, 1993
Author(s)
Jabez McClelland, R E. Scholten, E C. Palm, Robert Celotta
The ability to fabricate nanometer-sized structures that are stable in air has the potential to contribute significantly to the advancement of new nanotechnologies and our understanding of nanoscale systems. Laser light can be used to control the motion of

In Situ Characterization of Catalytic Propylene Oxidation on the Pt (111) Surface

January 17, 2000
Author(s)
A M. Gabelnick, A T. Capitano, D J. Burnett, Daniel A. Fischer, J L. Gland
The catalytic oxidation of propylene with both propylene and oxygen in the gas phase has been characterized on the Pt(111) surface. In situ soft x-ray kinetic and spectroscopic measurements using fluorescence detection have been used to characterize this

Faint White Dwarf Flux Standards: Data and Models

December 18, 2024
Author(s)
ralph bohlin, Susana Deustua, ABHIJIT SAHA, Gautham Narayan, Annalisa Calamida, Ivan Hubeny, Thomas Matheson, Armin Rest, Jay Holberg, Karl Gordon, Christopher Stubbs
Abstract Fainter standard stars are essential for the calibration of larger telescopes. This work adds to the calibration spectra (CALSPEC) database of 19 faint white dwarfs (WDs) with all-sky coverage and V magnitudes between 16.5 and 18.7. Included for

Rydberg states of alkali atoms in atomic vapor as SI-traceable field probes and communications receivers

May 8, 2024
Author(s)
Noah Schlossberger, Nik Prajapati, Samuel Berweger, Andrew Rotunno, Aly Artusio-Glimpse, Abrar Sheikh, Eric Norrgard, Christopher L. Holloway, Stephen Eckel
Rydberg states of alkali atoms are highly sensitive to electric fields because their electron wavefunction has a large spatial extent, leading to large polarizabilities for static fields and large transition dipole moments for time-varying fields

Rydberg states of alkali atoms in atomic vapor as SI-traceable field probes and communications receivers

May 8, 2024
Author(s)
Noah Schlossberger, Nik Prajapati, Samuel Berweger, Aly Artusio-Glimpse, Matt Simons, Abrar Sheikh, Andrew Rotunno, Eric Norrgard, Stephen Eckel, Christopher L. Holloway
Rydberg states of alkali atoms are highly sensitive to electric fields because their electron wavefunction has a large spatial extent, leading to large polarizabilities for static fields and large transition dipole moments for time-varying fields

Mechanical interfaces in machine tools

June 16, 2022
Author(s)
Erhan Budak, Atsushi Matsubara, Alkan Donmez, Jokin Manua
Machine tools involve various mechanical interfaces in different forms and styles which affect the performance significantly in terms of rigidity, thermal stability, precision, and accuracy. This paper presents a review of the related literature in machine

Calibration Procedures for Weights and Measures Laboratories

May 29, 2019
Author(s)
Georgia L. Harris
This publication contains standard operating procedures for calibrations that were not previously published in other NIST Office of Weights and Measures publications and are included here in support of weights and measures laboratory program requirements
Displaying 1076 - 1100 of 1947
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