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NIST Authors in Bold

Displaying 10926 - 10950 of 13225

Improved NIST Airspeed Calibration Facility

March 23, 2010
Author(s)
Iosif I. Shinder, J. M. Hall, Michael R. Moldover
… The National Institute of Standards and Technology (NIST) uses a laser Doppler anemometer (LDA) as a working standard for airspeed calibrations in the range 0.15 m/s to 75 m/s (0.34 to 168 miles/hour). We … and time. We also improved the LDA signal-to-noise ratio in NIST’s wind tunnel, particularly at higher air speeds, by …

Simultaneous Measurement of Magnetic Vortex Polarity and Chirality using Scanning Electron Microscopy with Polarization Analysis (SEMPA)

February 16, 2010
Author(s)
Seok-Hwan Chung, Daniel T. Pierce, John Unguris
… structure is an equilibrium configuration frequently found in patterned magnetic nanostructures. It is characterized by an in-plane curling of the magnetization with clockwise or … but also difficult to measure or image directly. In this work, we used Scanning Electron Microscopy with …

Comparison of the NIST and PTB Standards for Air Kerma and Low-Energy X-rays

December 31, 2009
Author(s)
C M. O'Brien, L. Buermann
… x-rays at the National Institute of Standards and Technology (NIST) and the Physikalisch-Technische … Results are presented for the reference beam qualities in the range from 25 kV to 50 kV for the low energy x-rays, … between PTB and NIST. The results show the standards to be in reasonable agreement within the standard uncertainty of …

Traceability for Ballistics Signature Measurements in Forensic Science

December 1, 2009
Author(s)
Jun-Feng Song, Theodore V. Vorburger, Susan M. Ballou, Li Ma, Thomas Brian Renegar, Xiaoyu Alan Zheng, Martin Ols
… The National Institute of Standards and Technology (NIST) in collaboration with the Bureau of Alcohol, Tobacco, … Traceability and Quality System using these materials. In this paper, basic concepts and specific requirements for … Traceability for Ballistics Signature Measurements in Forensic Science …

Report on the Key Comparison CCPR K2.a-2003

October 30, 2009
Author(s)
Yoshihiro Ohno, Steven W. Brown, Thomas C. Larason
… issued by National Metrology Institutes (NMIs) signed in 1999, an international comparison of spectral responsivity in the near infrared region 900 nm to 1600 nm, designated … was piloted by National Institute of Standards and Technology and participated by 15 laboratories. The …

Scaling Factors and Uncertainties for ab Initio Anharmonic Vibrational Frequencies

August 21, 2009
Author(s)
Russell D. Johnson III, Karl K. Irikura, Raghu N. Kacker, Ruediger Kessel
… empirical factors as an approximate correction for errors in the force constants and for anharmonic effects. Anharmonic … is based upon the Guide to the Expression of Uncertainty in Measurement, published by the International Organization … maintained by the National Institute of Standards and Technology, which includes more than 3939 independent …

Measurements in Harsh RF Propagation Environments to Support Performance Evaluation of Wireless Sensor Networks

June 5, 2009
Author(s)
Catherine A. Remley, Galen H. Koepke, Christopher L. Holloway, Dennis G. Camell, Chriss A. Grosvenor
… out by the U.S. National Institute of Standards and Technology to characterize radiowave propagation in difficult radio environments - including those with high … high multipath. These tests provide data that can be used in the design, test, and verification of wireless sensor …

Ultraviolet degradation study of photomultiplier tubes at SURF III

May 8, 2009
Author(s)
Ping-Shine Shaw, Lindsay Hum, Zhigang Li, Keith R. Lykke, Michael Bishop
… Photomultiplier tubes (PMTs) are used in biological detection systems in order to detect the presence of biological warfare agents. … (SURF III) at the National Institute of Standards and Technology (NIST). SURF III provides synchrotron radiation …

A Fiber Placement Device and Methodology for preparing 2-D and 3-D Combinatorial Microcomposites

May 5, 2009
Author(s)
Jae Hyun Kim, John W. Hettenhouser, Chang K. Moon, Gale A. Holmes
… microcomposites with (6 to 20) um diameter fibers is new. In addition, the concept of preparing test specimens that … of type II shear-lag models that are most often used in composite failure models. Therefore, specimens of this … to verify this trend. In addition, data from this new technology should delineate the factors that influence …

The System Development Life Cycle (SDLC)

April 29, 2009
Author(s)
Shirley M. Radack
… disseminated by the National Institute of Standards and Technology (NIST) in Special Publication (SP) 800-64, Revision 2, Security Considerations in the System Development Life Cycle. This publication was …

Development Life Cycle for Semantically Coherent Data Exchange Specification

December 1, 2008
Author(s)
Boonserm Kulvatunyou, Katherine C. Morris, Simon P. Frechette
… In enterprise integration, a data-exchange specification is … data-exchange specifications must be consistent and valid in terms of agreed upon standards and guidelines. In this paper, we propose an activity model for the creation, … in this paper is independent of the data-exchange technology. [ ONLINE VERSION: …

A Novel Topology Control Scheme for Future Wireless Mesh Networks

November 30, 2008
Author(s)
Yi Qian, Kejie Lu, Tao Zhang, Shengli Fu
… In this paper, we address the topology control issue for … (WMNs) based on the principle of service-oriented design. In particular, we propose a novel topology control scheme that attempts to maximize the overall throughput in the network and that takes into account the traffic …

Call Admission Control for Mobile Agent Based Handoff in Wireless Mesh Networks

November 17, 2008
Author(s)
Yi Qian, Bo Rong, Kejie Lu, Michel Kadoch
… mesh network (WMN) has emerged recently as a promising technology for next-generation wireless networking. In WMN, it is important to provide an efficient handoff … differentiated priorities and statistical access bandwidth in WMN handoff environment. … Call Admission Control for Mobile Agent Based Handoff in Wireless Mesh Networks …

Bibliography of NIST Biosystems and Health Publications, 2001-2005

October 16, 2008
Author(s)
Nancy Allmang
… papers written by National Institute of Standards and Technology (NIST) scientists working in the area of measurements and standards for Biosystems and … (SWG) to develop a comprehensive list of search terms in order to develop this list. The SWG is comprised of …

Chemical Taxonomies and Semantic Web for AIDS Research- an over view

October 16, 2008
Author(s)
Talapady N. Bhat
Chemical structures provide the basis for understanding and rationalizing drug discovery process fro Human diseases. The study of interactions of chemicals with target enzymes such as HIV- protease, an AIDS enzyme, is critical for optimizing drug-discovery

Determination of 19-Norandrosterone in CCQM-P68. NIST Results Using an Isotope Dilution Liquid Chromatography/Tandem Mass Spectrometry Method

October 16, 2008
Author(s)
Susan Tai, Bei Xu, Michael J. Welch
… The U.S. National Institute of Standards and Technology (NIST) participated in an international interlaboratory study under the auspices … (CCQM) for the determination of 19-norandrosterone (19-NA) in urine, the principal metabolite of nandrolone and certain … Determination of 19-Norandrosterone in CCQM-P68. NIST Results Using an Isotope Dilution Liquid …

Issues and Trends in Legal Metrology (from a U.S. Perspective)

October 16, 2008
Author(s)
Charles D. Ehrlich, H V. Oppermann
… over the next 10 years to 20 years. Exponential increase in the use of technology in the marketplace requires legal metrology officials to … Issues and Trends in Legal Metrology (from a U.S. Perspective) …

Wetting-Dewetting Transition Line in Thin Polystyrene Films

October 16, 2008
Author(s)
K M. Ashley, D T. Raghavan, Jack F. Douglas, Alamgir Karim
… Thin polymeric films are increasingly being utilized in diverse technological applications and it is crucial to … the polymer surface tension can be appreciably modified in thin polymer films from their bulk counterparts so that … Wetting-Dewetting Transition Line in Thin Polystyrene Films …

Evaluation of Thermal Imaging Cameras

October 1, 2008
Author(s)
Francine K. Amon, Andrew J. Lock, Nelson P. Bryner, Joseph P. Rice, Howard Yoon
… (BIS) to NIST were each evaluated by the NIST Optical Technology Division (OTD) for three metrics: Noise-equivalent … thermal imagers tested were considered to be black boxes in which a target was placed in the field of view and the resulting image that appeared on …

Performance Evaluation of Laser Trackers

September 15, 2008
Author(s)
Balasubramanian Muralikrishnan, Daniel S. Sawyer, Christopher J. Blackburn, Steven D. Phillips, Bruce R. Borchardt, William T. Estler
… laser trackers. At the National Institute of Standards and Technology (NIST), we can perform the complete set of tests described in the Standard, and have done so for a variety of laser trackers. We outline the tests described in the Standard, discuss our capabilities at the large-scale …

STWS: A Unified Web Service for IEEE 1451 Smart Transducers

August 1, 2008
Author(s)
Yuyin Song, Kang B. Lee
… developed at the National Institute of Standards and Technology (NIST) based on the IEEE 1451.0 standard. A STWS … and a case study of reading transducer data is described in detail. The STWS enable Web-resident IEEE 1451 smart …

Measuring and Improving the Productivity of the U.S. Construction Industry: Issues, Challenges, and Opportunities

July 17, 2008
Author(s)
Robert E. Chapman, David T. Butry
… economy, it has experienced a prolonged period of decline in productivity. Due to the critical lack of measurement … however, the magnitude of the productivity problem in the construction industry is largely unknown. To address … that the summer 2008 National Academies Workshop can play in bringing together key construction industry stakeholders …
Displaying 10926 - 10950 of 13225
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