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Search Publications

NIST Authors in Bold

Displaying 6701 - 6725 of 13218

Effects of internal porosity and crystallographic texture on Charpy impact energy of Electron Beam Melting (EBM) titanium alloy (Ti-6Al-4V)*

November 3, 2018
Author(s)
Nikolas W. Hrabe, Ryan M. White, Enrico Lucon
… (Ti-6Al-4V) are shown through investigation of material in two heat treatment conditions (As-Built and Hot … on Charpy absorbed energy. Internal porosity was observed in the As-Built condition (99.8 % dense) but not in the HIPed condition, and the HIPed material had a higher …

PIECS - A Software Program for Machine Tool Process-Intermittent Error Compensation

May 1, 1996
Author(s)
Herbert T. Bandy, David E. Gilsinn
… error compensation loop and a post-process loop. In process-intermittent error compensation, a part is … parameters (speed, feed and depth of cut) as are used in the finish cut, to reproduce process-dependent errors such … coordinate for that point. Since the philosophy chosen in this program is to compensate process-intermittent errors …

Pocket Milling with Tool Engagement Detection

January 1, 1991
Author(s)
Thomas R. Kramer
… engagement is defined as the amount of engagement present in peripheral milling of a flat side face of a workpiece in a straight line with constant stepover. Feed rates and … algorithm, automated manufacturing, machining, milling, NC-program, numerical …

Overview of TREC 2023

May 1, 2024
Author(s)
Ian Soboroff
… for large-scale testing of information retrieval (IR) technology. This includes research on best methods for … of the evaluation materials themselves. "Retrieval technology" is broadly interpreted to include a variety of … was held at the National Institute of Standards and Technology (NIST) November 14–17, 2023. …

PSCR 2020_Speech Analytics for Public Safety

October 29, 2020
Author(s)
Frederick R. Byers
… to measure the performance of these technologies in the context of public safety communications through formal … describes the evaluation process and the metrics used in the evaluation. …

The red color in 19th century Thai glass studied by X-ray and optical spectroscopy

July 2, 2014
Author(s)
Bruce D. Ravel, Wantana Klysubun, G. Lawrence Carr, Christoph Hauzenberger
… The Temple of the Emerald Buddha in Bangkok, Thailand is noted for its glass mosaic … is composed of variously-colored, mirrored glass pieces. In this work, we examine the chemical composition and optical … The red color in 19th century Thai glass studied by X-ray and optical …

Towards Mobile Manipulator Safety Standards

October 24, 2013
Author(s)
Jeremy A. Marvel, Roger V. Bostelman
… mobile manipulators (robot arms mounted on mobile bases) in modern manufacturing. Considerations for the capabilities of mobile manipulators are provided in relationship to these standards, as are numerous scenarios …

Reference Ballistic Chronograph for Personal Armor Characterization

October 9, 2008
Author(s)
Nicholas Paulter, Donald R. Larson
… type of body armor.  The greater the error and uncertainty in measuring the velocity of the bullet, the greater the uncertainty in establishing an accurate V50 value.  Reproducibility … estimate of bullet velocity with an associated uncertainty in the velocity measurement that is much lower than the …

ASTM E-57 3D Imaging Systems Committee: An Update

March 19, 2008
Author(s)
Alan M. Lytle, Geraldine S. Cheok, Kamel S. Saidi
… In 2006, ASTM committee E57 was established to develop … surveying, mapping and terrain characterization, manufacturing (e.g., aerospace, shipbuilding), … of the ASTM E57 3D Imaging Systems committee in 2007. …

ASTM E57 3D Imaging Systems Committee: An Update

March 19, 2008
Author(s)
Geraldine S. Cheok, Alan M. Lytle, Kamel S. Saidi
… In 2006, an ASTM committee (E57) was established to develop … surveying, mapping and terrain characterization, manufacturing (e.g., aerospace, shipbuilding), … the efforts of the ASTM E57 3D Imaging Systems committee in 2007. …

A Low Cost Digital Vibration Meter

April 1, 2007
Author(s)
William V. Payne, Jon Geist
… the use of Micro-Electronic and Mechanical Systems (MEMS) manufacturing techniques. The major mechanical element of the … is the cantilever beam which is on the order of 500 m in length. Vibration of the MEMS device in the plane perpendicular to the cantilever beam causes …

Vehicle Fire Suppression Research Needs

March 1, 2007
Author(s)
Anthony P. Hamins
… This report identifies research needs in automotive fire protection. The work focuses on the … is cited with special attention given to results cited in the scientific literature as well as relevant unreviewed … fire problem, a summary of previous suppression research in vehicles, recent fire suppression research in general and …

Microwave transitions and nonlinear magneto-optical rotation in anti-relaxation-coated cells

January 27, 2005
Author(s)
D Budker, Leo W. Hollberg, Derek F. Kimball, John E. Kitching, S Pustelny, V V. Yashchuk
… hyperfine components of {8s}Rb and d{87}Rb atoms contained in vapor cells with alkane anti-relaxation coatings. The … are compared with data on Zeeman relaxation obtained in nonlinear magneto-optical rotation (NMOR) experiments, a … quantitative understanding of spin-relaxation mechanisms in coated cells. By comparing cells manufactured over a …

A Feature-Based Inspection and Machining System

August 1, 2001
Author(s)
Thomas R. Kramer, Hui-Min Huang, Elena R. Messina, Frederick M. Proctor, Harry A. Scott
… the Feature-BasedInspection and Control System (FBICS). In FBICS, the controller of a machiningcenter or coordinate … (1) to demonstrate feature-based inspection and control in an open-architecture control system, (2) as a testbed for solving problems in feature-based manufacturing, and (3) to test the usability of STEP methods …

Investigation of the Non-Uniqueness of the ITS-90 in the Range 660 C to 962 C

June 1, 2001
Author(s)
G T. Furukawa, Gregory F. Strouse
… of the ITS-90 using high temperature SPRTs (HTSPRTs) in the range 660 C to 962 C. To achieve temperature stability … of three designs from five manufacturers were tested. In addition to measurements near the calibration temperatures … Symposium on Temperature and Thermal Measurements in Industry and Science | 8th | | VDE …

An Overview of the Development of Technical Infrastructure in the Asia-Pacific Region: The Work of the Asia-Pacific Economic Cooperation (APEC) Sub-Committee in Standards and Conformance (SCSC) and the Specialist Regional Body (SRBS)

June 1, 1999
Author(s)
C R. DeVaux
… competence of its measurement and testing capabilities, in particular, an economy can provide substantial benefits to … and consumers. It is also better equipped to participate in the confidence building requirements of the region to take … An Overview of the Development of Technical Infrastructure in the Asia-Pacific Region: The Work of the Asia-Pacific …

Virial Coefficients of Pure Gases

August 1, 2002
Author(s)
J H. Dymond, K N. Marsh, R C. Wilhoit, K C. Wong, Michael D. Frenkel
… and now located at the National Institute of Standards and Technology, Boulder, Colorado. The virial coefficient data in this compilation will be of interest to the theoretical … data from different published sources are tabulated in increasing order of temperature, and an estimate of the …

Public Safety Communications Research, Uncrewed Aircraft Systems Program Challenge Overview

July 22, 2024
Author(s)
Don Harriss, Terese Manley, Stephanie Layman
… (PSCR) Division at the National Institute of Standards and Technology (NIST) to investigate interoperability for public … through prize challenges to explore the potential of technology and the impact of Uncrewed Aircraft Systems (UAS) … help bring together industry leaders and experts to solve technology problems for first responders. Challenges have …

NIST 2020 CTS Speaker Recognition Challenge Evaluation Plan

July 29, 2020
Author(s)
Seyed Omid Sadjadi, Craig S. Greenberg, Elliot Singer, Douglas A. Reynolds, Lisa Mason
… organizations, the US National Institute of Standards and Technology (NIST) will be organizing a 2020 CTS Challenge, … system-calibrated performance of the current state of technology, (2) to provide a common test bed that enables the research community to explore promising new ideas in speaker recognition, and (3) to support the community in …

Securing WiMAX Wireless Communications

December 27, 2010
Author(s)
Shirley M. Radack
… This bulletin summarizes the information presented in NIST Special Publication (SP) 800-127, Guide to Securing … Recommendations of the National Institute of Standards and Technology. The publication, which was written by Karen … capabilities of wireless communications that use WiMAX technology. WiMAX is a widely used technology for …

Making Biometric Systems Usable Let's Not Forget the User

December 31, 2007
Author(s)
Mary F. Theofanos, Brian C. Stanton
… use of physical identifiable characteristics (biometrics) in border and transportation security has increased since … the United States Visitor and Immigrant Status Indicator Technology (US-VISIT) program collects a right and left index … The Department of Homeland Security (DHS) Science and Technology Directorate recognized this need and initiated a …
Displaying 6701 - 6725 of 13218
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