U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 22351 - 22375 of 73742

Vacuum-Assisted Gas Atomization of Liquid Metal

October 17, 2012
Author(s)
Steven Mates, Stephen D. Ridder, Frank S. Biancaniello, Tony Zahrah
Vacuum-assisted gas atomization of liquid metal is explored. The investigation is motivated by observations of liquid metal atomization which indicate that secondary atomization is sustained over an extended distance from the nozzle tip. Increasing the

Efficient Algorithms for T-way Test Sequence Generation

October 16, 2012
Author(s)
Linbin Yu, Yu Lei, Raghu N. Kacker, D. Richard Kuhn, James F. Lawrence
Combinatorial testing has been shown to be a very effective testing strategy. Most work on combinatorial testing focuses on t-way test data generation, where each test is an unordered set of parameter values. In this paper, we study the problem of t-way

Notional Supply Chain Risk Management Practices for Federal Information Systems

October 16, 2012
Author(s)
Jon M. Boyens, Celia Paulsen, Nadya Bartol, Rama Moorthy, Stephanie Shankles
This publication is intended to provide a wide array of practices that, when implemented, will help mitigate supply chain risk to federal information systems. It seeks to equip federal departments and agencies with a notional set of repeatable and

Bi2Te3 and Bi2Te3-xSx FOR THERMOELECTRIC APPLICATIONS

October 15, 2012
Author(s)
Winnie K. Wong-Ng, N D. Lowhorn, Joshua B. Martin, Peter Zavalij, Howard Joress, Qingzhen Huang, Yonggao Y. Yan, Azzam Mansour, Evans L. Thomas, Jihui Yang, Martin L. Green
The increased interest in research and development on thermoelectric materials is partly due to the need for improved efficiency in the global utilization of energy resources. Historically, Bi2Te3 occupies an important position in the thermoelectric

Broadband Emissivity Calibration of Highly Reflective Samples at Cryogenic Temperatures

October 15, 2012
Author(s)
Solomon I. Woods, Timothy M. Jung, Greg Ly, Simon G. Kaplan, Jie Yu
We have developed a technique for calibrating the broadband optical emissivity of high reflectivity samples at cryogenic temperatures. This measurement method employs a primary standard optical detector with high absorptance from visible wavelengths to

Certification of NIST SRM 2569 Lead Paint Films for Children's Products

October 15, 2012
Author(s)
John L. Molloy, John R. Sieber, Karen E. Murphy, Stephen E. Long, Stefan D. Leigh
SRM 2569 Lead Paint Films for Children’s Products is a new Standard Reference Material (SRM) developed for use primarily with XRF instrumentation. It consists of three paint coatings, with nominally 0 mg/kg, 90 mg/kg, and 300 mg/kg of Pb added, on

Evaluation of Cation-Exchanged Zeolite Adsorbents for Post-Combustion Carbon Dioxide Capture

October 15, 2012
Author(s)
Tae-Hyun Bae, Matthew Ross Hudson, Jarad A. Mason, Wendy Queen, J.J. Dutton, Kenji Sumida, Ken J. Micklash, Steven S. Kaye, Craig Brown, Jeffrey R. Long
A series of zeolite adsorbents was evaluated for potential application in post-combustion (CO 2) capture. Among zeolites tested, Ca-A showed the highest CO 2 uptake together with an excellent CO 2 selectivity over N 2 at conditions relevant to capture from

Photon Temporal Correlations Measured Using a Dual-Channel Upconversion Detector

October 14, 2012
Author(s)
Paulina Kuo, Jason S. Pelc, Oliver T. Slattery, Martin M. Fejer, Xiao Tang
We demonstrate application of a dual-channel upconversion detector as a beamsplitter that preserves photon statistics. We use this beamsplitter to characterize temporal correlations of photons from coherent and pseudo-thermal sources.

Aggregation/agglomeration state of carbon nanotubes

October 12, 2012
Author(s)
Vivek M. Prabhu, Toshiya Okazaki, Takeshi Eitoku, Masayoshi Tange, Haruhisa Kato
Evaluation of aggregation and agglomeration of carbon nanotube (CNT) solution has been one of the key issues for applications. Here we introduce a simple method based on depolarized dynamic light scattering (DDLS) performed at multiple scattering angles to

An IEEE Standard Ontology for Robotics and Automation

October 12, 2012
Author(s)
Craig I. Schlenoff, Edson Prestes, Rajmohan Madhavan, Paulo Goncalvest, Howard Li, Stephen B. Balakirsky, Thomas R. Kramer, Emilio Miguelanez
In this article, we discuss a newly formed IEEE- RAS working group entitled Ontologies for Robotics and Automation (ORA). The goal of this working group is to develop a standard ontology and associated methodology for knowledge representation and reasoning

An Industrial Robotic Knowledge Representation for Kit Building Applications

October 12, 2012
Author(s)
Stephen B. Balakirsky, Zeid Kootbally, Craig I. Schlenoff, Thomas R. Kramer, Satyandra K. Gupta
The IEEE RAS Ontologies for Robotics and Automation Working Group is dedicated to developing a methodology for knowledge representation and reasoning in robotics and automation. As part of this working group, the Industrial Robots sub-group is tasked with

Collaborative Robotics: Measuring Blunt Force Impacts on Humans

October 12, 2012
Author(s)
Joseph A. Falco, Jeremy A. Marvel, Richard J. Norcross
Robot manufacturers are developing a new generation of industrial robots that are designed to work in collaborative environments in close proximity to humans. In parallel, an international standards effort is developing a technical specification to support

Measurement Science for "More-Than-Moore" Technology Reliability Assessments

October 12, 2012
Author(s)
Chukwudi A. Okoro, Jungjoon Ahn, Meagan V. Kelso, Pavel Kabos, Joseph Kopanski, Yaw S. Obeng
In this paper, we will present an overview of metrology issues and some of the techniques currently under development in our group at NIST, aimed at understanding some of the potential performance limiting issues in such highly integrated systems. We will

Single photon frequency up-conversion and its applications

October 12, 2012
Author(s)
Lijun Ma, Oliver T. Slattery, Xiao Tang
The National Institute of Standards and Technology (NIST) has adapted a frequency up-conversion technique to develop highly efficient and sensitive single photon detectors and spectrometer for use at telecommunications wavelengths. The NIST team used these

The Infrared Spectrum of HOOH+ Trapped in Solid Neon

October 12, 2012
Author(s)
Warren E. Thompson, Catherine L. Lugez, Marilyn E. Jacox
When a Ne:H2O2 mixture is codeposited at 4.3 K with a beam of neon atoms that have been excited in a microwave discharge, three new, photosensitive absorptions appear which can be assigned to the three infrared-active fundamentals of trans-HOOH+. When the

Aggregating CVSS Base Scores for Semantics-Rich Network Security Metrics

October 11, 2012
Author(s)
Pengsu Cheng, Lingyu Wang, Sushil Jajodia, Anoop Singhal
A network security metric is desirable in evaluating the effectiveness of security solutions in distributed systems. Aggregating CVSS scores of individual vulnerabilities provides a practical approach to network security metric. However, existing
Displaying 22351 - 22375 of 73742
Was this page helpful?