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Displaying 601 - 625 of 1947

A comprehensive analysis of the spectrum of Fe II

October 28, 2010
Author(s)
Gillian Nave
A new analysis of the laboratory spectrum of Fe II is described. The aim is to produce a comprehensive list of Fe II lines, based on high-resolution grating and Fourier transform spectra, covering wavelengths from 900 ̊A to 5.5 μm. Particular attention has

The NIST Speaker Recognition Evaluations: 1996-2001

December 1, 2001
Author(s)
Alvin F. Martin, Mark A. Przybocki
We discuss the history and purpose of the NIST evaluations of speaker recognition performance. We cover the sites that have participated, the performance measures used, and the formats used to report results. We consider the extent to which there has been

Carrier-Envelope Phase Stabillization of Single and Multiple Femtosecond Lasers

October 12, 2021
Author(s)
D J. Jones, S T. Cundiff, T M. Fortier, J L. Hall, Jun Ye
The basic concepts, technical implementations, and known limitations of actively stabilizing the carrier-envelope phase of a few cycle pulse train are discussed. The route toward determining the absolute carrier-envelope phase, thereby enabling electronic

Defining 'kind of quantity'

February 8, 2019
Author(s)
David W. Flater
The definition of 'kind of quantity' given in the International Vocabulary of Metrology (VIM), 3rd edition, does not cover the historical meaning of the term as it is most commonly used in metrology. Most of its historical meaning has been merged into

Optics

February 19, 2017
Author(s)
Joseph Reader
The field of optics is summarized to assist in the solution of practical optics problems by working scientists. Over seventy formulas are presented dealing with reflection and refraction, absorption, lenses, mirrors, diffraction, interference, and spectra

Standard Operating Procedures for Smolder Ignition Testing of Upholstery Fabrics

December 11, 2012
Author(s)
Rick D. Davis, Mauro Zammarano, Szabolcs Matko, Roland H. Kraemer
This manuscript describes a methodology to measure the influence of an upholstery cover fabric to promote smoldering mass loss of a small-scale mock-up. The primary test metric is total mock-up mass loss after 45 min exposure to the smoldering ignition

Planning to Deliver Scientific Information to the Next Generation of Scientists

October 16, 2008
Author(s)
Terrie Wheeler, Mylene S. Ouimette
The Information Services Division (ISD) of the National Institute of Standards and Technology (NIST) sought to determine the information needs of the millennial scientists who will be entering its workforce in the next five years. Conducted as a two-year

Using Outcome Tracking to Plan Our E-Journal Future

October 16, 2008
Author(s)
Barbara P. Silcox
This session will address how the NIST Research Library uses customer data to make collection development decisions. The presentation will briefly describe the survey instruments used and techniques employed to obtain input from NIST researchers on the

Fifty years of AAPM Involvement in Radiation Dosimetry

April 30, 2008
Author(s)
Geoffrey S. Ibbott, C-M Ma, D W O Rogers, Stephen M. Seltzer, J Williamson
This paper reviews the involvement of the AAPM in various aspects of radiation dosimetry over its fifty year history, emphasizing the especially important role that external beam dosimetry played in the early formation of the organization. Topics covered

Electronic Authentication: Guidance for Selecting Secure Techniques

August 1, 2004
Author(s)
Shirley M. Radack
This ITL Bulletin summarizes the contents of NIST Special Publication 800-63, Electronic Authentication Guideline, by William E. Burr, Donna F. Dodson, and W. Timothy Polk, which provides technical guidance on existing and widely implemented methods for

Interleaved, Sampled Fiber Bragg Gratings for use in Hybrid Wavelength References

December 1, 2002
Author(s)
Michael W. Rabin, William C. Swann, Sarah L. Gilbert
We discuss the design and fabrication of interleaved, sampled fiber Bragg gratings (ISFBGs) for use in hybrid wavelength calibration references covering the 1300 nm to 1600 nm region. We demonstrate use of sampled phase masks (SPMs) to make sampled

Improving patient outcomes with regenerative medicine: How to move the needle forward in cell manufacturing, standards, 3D bioprinting, AI enabled automation, education and training

June 17, 2020
Author(s)
Carl Simon, Josh Hunsberger, Claudia Zylberberg, Preveen Ramamoorthy, Thomas Tubon, Crystal Ruff, Ram Bedi, Kurt Gielen, Lynn Fisher, Jed Johnson, Priya Barankiak, Behzad Mahdavi, Michael Hadjisavas, Shannon Eaker, Cameron Miller
Regenerative Medicine Manufacturing Society (RMMS), is the first and only professional society dedicated specifically towards advancing manufacturing solutions for the field of regenerative medicine. RMMS' vision is to provide greater patient access to

Security Requirements for Cryptographic Modules

March 22, 2019
Author(s)
National Institute of Standards and Technology (NIST), Michael J. Cooper, Kim B. Schaffer
The selective application of technological and related procedural safeguards is an important responsibility of every federal organization in providing adequate security in its computer and telecommunication systems. This standard is applicable to all

Broadband Direct Detection Submillimeter Spectrometer with Multiplexed Superconducting Transition Edge Thermometer Bolometers

March 1, 2002
Author(s)
D. J. Benford, Troy A. Ames, Jay A. Chervenak, S. H. Mosely, Rick A. Shafer, Johannes G. Staguhn, George M. Voellmer, Francois Pajot, Cyrille Rioux, Thomas G. Phillips, Bruno Maffei, Kent D. Irwin
We present performance results based on the first astronomical use of multiplexed superconducting bolometers. The Fabry-Perot Interferometer Bolometer Research Experiment (FIBRE) is a broadband submillimeter spectrometer that achieved first light in June

First Astronomical Use of Multiplexed Transition Edge Bolometers

February 1, 2002
Author(s)
D. J. Benford, Troy A. Ames, James A. Chervenak, Erich N. Grossman, Kent D. Irwin, S. A. De Kotwara, B. Maffci, S. H. Mosely, Francois Pajot, Thomas G. Phillips, Carl D. Reintsema, Cyrille Rioux, Rick A. Shafer, Johannes G. Staguhn, C. Vastel, George M. Voellmer
We present performance results based on the first astronomical use of mutiplexed superconducting bolometers. The Fabry-Perot Interferometer Bolometer Research Experiment (FIBRE) is a broadband submillimeter spectrometer that achieved first light in June

2016 Topical Meeting on Optical Interference Coatings: Manufacturing Problem Contest

October 21, 2016
Author(s)
Catherine C. Cooksey, Daniel Poitras, Li Li, Michael Jacobson
For the Manufacturing Problem contest held in conjunction with OSA’s 2016 Topical Meeting on Optical Interference Coatings, participants were asked to design and fabricate on a provided substrate a coating with very specific (and rather peculiar)

Time Measurement

February 3, 2014
Author(s)
Michael A. Lombardi
An overview of time metrology, with emphasis on time interval measurements, and time synchronization. It covers the evolution of clocks and timekeeping, time scales, the fundamentals of time measurement, and the various time transfer technique used to
Displaying 601 - 625 of 1947
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