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NIST Authors in Bold

Displaying 1326 - 1350 of 2934

Kinematic Modeling of a 6-Degree of Freedom Tri Stage Micro-Positioner

November 1, 2001
Author(s)
Nicholas G. Dagalakis, E Amatucci
The 6-Degree of Freedom Tri Stage Micro Positioner (6DFTSMP) can generate high accuracy, small displacement, and high-resolution motions. The moving platform of the device has six degrees (6-D) of freedom motions (translation and rotation about three

The Importance of Entropy to Information Security

February 3, 2014
Author(s)
Apostol T. Vassilev, Timothy Hall
The strength of cryptographic keys is an active challenge in academic research and industrial practice. In this paper we discuss the entropy as fundamentally important concept for generating hard-to-guess, i.e., strong, cryptographic keys and outline the

Sub-femtosecond absolute timing jitter with a 10 GHz hybrid photonic-microwave oscillator

June 7, 2012
Author(s)
Tara M. Fortier, Craig W. Nelson, Archita Hati, Franklyn J. Quinlan, Jennifer A. Taylor, Haifeng (. Jiang, Chin-Wen Chou, Till P. Rosenband, Nathan D. Lemke, Andrew D. Ludlow, David A. Howe, Christopher W. Oates, Scott A. Diddams
We present an optical-electronic approach to generating microwave signals with high spectral purity. By overcoming shot noise and operating near fundamental thermal limits, we demonstrate 10 GHz signals that have timing deviation from an ideal periodic

Estimating Temperatures in Compartment Fires

December 31, 2002
Author(s)
William D. Walton, Phillip H. Thomas
The ability to predict temperattures developed in compartment fires is of great significance to the fire protection professional. There are many uses for the knowledge of compartment fire temperatures, including the prediction of (1) the onset of hazardous

Cooper Minima in the Photoemission Spectra of Solids

November 6, 2000
Author(s)
S Molodtsov, S Halilov, V Servedio, W Schneider, S Danzenbaecher, J Hinarejos, M Richter, C Laubschat
Variations of the photoionization cross-section of valence states as a function of interatomic distance are studied by means of atomic and solid-state density functional approaches and compared with photoemission data. In contrast to the free atom case, a

Simplified Quantum Logic with Trapped Ions

January 1, 1997
Author(s)
C Monroe, Dietrich Leibfried, B E. King, D M. Meekhof, Wayne M. Itano, David J. Wineland
We describe a simplified scheme for quantum logic with a collection of laser-cooled trapped atomic ions. Building on the scheme of Cirac and Zoller, we show how the fundamental controlled- NOT gate between a collective mode of ion motion and the internal

Dimensional Inspection Planning Based on STEP and DMIS

June 1, 1993
Author(s)
Shaw C. Feng
An international standard on product data representation and exchange for dimensional inspection planning is being developed. This paper provides a review of fundamental technology enabling the standard development and describes the current status of an

Detectability of Slow Crack Growth in Bridge Seels by Acoustic Emission

December 1, 1998
Author(s)
Marvin A. Hamstad, Joseph D. McColskey
The detectabillity of slow crack growth of cracks in bridge steels has been studied by use of acoustic emission testing technology. Fatigue crack-growth rates of nominally 1x10 -4 mm/cycle (4x10 -6 in./cycle) and 1x10 -3 mm/cycle (4x10-5 in/cycle) were

On the Importance of Firebrand Processes in Large Outdoor Fires

May 15, 2019
Author(s)
Samuel L. Manzello
Firebrands are produced from combustion of both vegetative and structural fuels in large outdoor fires. It is well known that firebrand generation, transport, and ignition mechanisms result in rapid and potentially devastating fire spread processes in

A Brief Introduction to the Winter Simulation Conference

September 1, 2017
Author(s)
Andreas Tolk, John Fowler, Guodong Shao, Enver Yucesan
In December of 2017, the Winter Simulation Conference (WSC) celebrates its 50th anniversary. Among the special events planned to commemorate this milestone will be a track highlighting the history and fundamental contributions these conferences have made

NIST Cloud Computing Reference Architecture

September 8, 2011
Author(s)
Fang Liu, Jin Tong, Jian Mao, Robert B. Bohn, John V. Messina, Mark L. Badger, Dawn M. Leaf
The adoption of cloud computing into the Federal Government and its implementation depend upon a variety of technical and non-technical factors. A fundamental reference point, based on the NIST definition of Cloud Computing, is needed to describe an

The Cooper Pair Transistor

September 17, 2010
Author(s)
Jose A. Aumentado
The Cooper pair transistor (CPT) is a superconducting electrometer that has applications in quantum information as well as fundamental superconductivity studies. Since it operates in a near-dissipationless mode, it has potential as a minimally invasive

Cell Interactions with Biomaterials Gradients and Arrays

August 4, 2009
Author(s)
Yanyin Yang, Vinoy Thomas, Abby W. Morgan, Shauna M. Dorsey, Carl Simon Jr.
Gradients and arrays have become very useful to the fields of tissue engineering and biomaterials.  Both gradients and arrays make efficient platforms for screening cell response to biomaterials.  Graded biomaterials also have functional applications and

Physics Laboratory Annual Report 2001

January 1, 2002
Author(s)
K B. Gebbie, William R. Ott
This report summarizes research projects, measurement method development, calibration and testing, and data evaluation activities that were carried out during calendar year 2001 in the NIST Physics Laboratory. These activities are in the areas of electron

Physics Laboratory Technical Activities 2000

February 1, 2001
Author(s)
K B. Gebbie, William R. Ott
This report summarizes research projects, measurement method development, calibration and testing, and data evaluation activities that were carried out during calendar year 2000 in the NIST Physics Laboratory. These activities are in the areas of electron

Physics Laboratory Technical Activities 1999

March 1, 2000
Author(s)
K B. Gebbie
This report summarizes research projects, measurement method development, calibration and testing, and data evaluation activities that were carried out during calendar year 1999 in the NIST Physics Laboratory. These activities are in the areas of electron
Displaying 1326 - 1350 of 2934
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