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Displaying 8151 - 8175 of 9859

BFRL Publications, 2000, Volumes 1 and 2

May 1, 2001
Author(s)
Star R. Burgess, Glenn P. Forney, Nora H. Jason
BFRL Publications, 2000, contains publications produced by or for BFRL staff during 2000. Volume 1 contains Building Research Publications and Volume 2 contains Fire Research publications. We also have included software for solving problems related to

Coercivity in Exchange-Bias Bilayers

January 18, 2001
Author(s)
Mark D. Stiles, Robert D. McMichael
Simulations of magnetic reversal in polycrystalline exchange-bias bilayers exhibit two contributions to the enhanced coercivity found in exchange-bias systems, one due to inhomogeneous reversal and and the other to irreversible transitions in the

Suppression of Low Strain Rate Flames by an Agent (NISTIR 6588)

November 1, 2000
Author(s)
Anthony P. Hamins, Matthew F. Bundy, I K. Puri
The structure and suppression of low strain rate methane-air nonpremixed flames were investigated experimentally and computationally. Measurements of the critical suppression conditions were conducted using N2, CO2, and CF3Br added to the fuel or oxidizer

Privilege Management of Mobile Agents

October 1, 2000
Author(s)
Wayne Jansen, Athanasios T. Karygiannis
Most mobile agent systems use internal data structures within an agent to control and specify its security requirements and properties. These structures typically contain authorization information regarding access to computational resources on distributed

NIST Random Profile Roughness Specimens and Standard Bullets

January 1, 2000
Author(s)
Jun-Feng Song, Theodore V. Vorburger, Robert A. Clary, Michael L. McGlauflin, Eric P. Whitenton, Christopher J. Evans
Based on the numerical controlled (NC) diamond turning process used previously for manufacturing random profile roughness specimens, two prototype standard bullets were developed at the National Institute of Standards and Technology (NIST). These standard

NIST Random Profile Roughness Specimens and Standard Bullets

January 1, 2000
Author(s)
Jun-Feng Song, Theodore V. Vorburger, Christopher J. Evans, Michael L. McGlauflin, Eric P. Whitenton, Robert A. Clary
Based on the numerical controlled (NC) diamond turning process used previously for manufacturing random profile roughness specimens, two prototype standard bullets were developed at the National Institute of Standards and Technology (NIST). These standard

SEM/X-Ray Imaging of Cement-Based Materials

August 1, 1999
Author(s)
Dale P. Bentz, Paul E. Stutzman, C Haecker, S Remond
Scanning electron microscopy and X-ray imaging techniques have been developed for imaging the complex microstructure of cement-based materials such as cement powder and fly ash. By combining the information available in the backscattered electron and

Microscopic Image Analysis of Defect Areas in Optical Disks

July 1, 1999
Author(s)
P L'Hostis, Frederick R. Byers, Fernando L. Podio, Xiao Tang
This paper presents techniques developed in the Information Technology Laboratory of the US National Institute of Standards and Technology (NIST/ITL) for enabling microscopic image analysis of optical data storage media such as optical discs. These non

Data Representation and Handling for Large Image Browsing

October 5, 1998
Author(s)
O E. Kia, A A. Schaff, J J. Sauvola
In this paper we present results of work done on large image browsing. Advances in compression and transmission have allowed efficient usage of storage and transmission resources; however, much work needs to be done in order to integrate such concepts in

Capacitance and Dissipation Factor Measurements from 1 kHz to 10 MHz

July 1, 1998
Author(s)
Andrew D. Koffman, Bryan C. Waltrip, Nile M. Oldham, S. Avramov
A measurement technique developed by K. Yokoi et al. At Hewlett-Packard Japan, Ltd. Has been duplicated and evaluated at NIST to characterize four-terminal pair capacitors. The technique is based on an accurate three-terminal measurement made at 1 kHz

Workspace Variation of a Hexapod Machine Tool

March 1, 1998
Author(s)
J Conti, C Clinton, Li Zhang, Albert J. Wavering
A method is presented to evaluate the workspace variation of a Stewart platform based machine tool. Three sets of constraints, covering strut lengths, platform and base spherical joint angles, and strut collisions, are formulated using inverse kinematics

High-Accuracy Critical-Dimension Metrology Using a Scanning Electron Microscope

May 1, 1996
Author(s)
J R. Lowney, Andras Vladar, Michael T. Postek
Two Monte Carlo computer codes have been written to simulate the transmitted-, backscattered-, and secondary-electron signals from targets in a scanning electron microscope. The first discussed, MONSEL-II, is applied to semi-infinite lines produced

Airflow and Radon Transport Modeling in Four Large Buildings

January 1, 1995
Author(s)
Jin B. Fang, Andrew K. Persily
Computer simulations of multizone airflow and contaminant transport were performed in four large buildings using the program CONTAM88. This paper describes the physical characteristics of the buildings and their idealizations as multizone building airflow
Displaying 8151 - 8175 of 9859
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