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Displaying 10451 - 10475 of 13225

Biometric Standards

August 27, 2009
Author(s)
Patrick J. Grother
… biometric standards, and as a survey of the major efforts in the field. Published consensus standards in a wide range of fields have existed for many years. … multiple organizations and suppliers has been considered. In virtually all cases, standards are developed in response …

Simple, Quantitative Headspace Analysis by Cryoadsorption on a Short Alumina PLOT Column

August 1, 2009
Author(s)
Thomas J. Bruno
… compounds prior to chromatographic analysis is a mature technology.  Application to low volatility compounds has been … and analyses as a function of sample temperature.  In this paper we have applied short lengths of alumina coated … during the collection cycles to improve efficiency, in a method called cryoadsorption.  We have applied the …

Radionuclide Standardization by Primary Methods: An Overview

February 17, 2009
Author(s)
Ronald Colle
… physical measurement standards of activity that are needed in virtually every sub-discipline of radioanalytical and … laboratories, like the National Institute of Standards and Technology (NIST) in the U.S.A. This paper briefly reviews some of the various …

Description and Results of 2002 Organic Intercomparison ExercisesExercise Materials: Fish Homogenate V (QA02FSH5) Marine Sediment XI (QA02SED11)

October 16, 2008
Author(s)
Michele M. Schantz, John Kucklick, Reenie M. Parris, Dianne L. Poster, Stephen Wise
… In support of marine monitoring measurement programs, the National Institute of Standards and Technology (NIST) conducts yearly interlaboratory comparison … the quality and comparability of their performance in measuring selected organic contaminants in environmental …

Metrology for Cancer Biomarkers: Affinity Analysis of Human HER2 and Telomerase With IgYs

October 16, 2008
Author(s)
Yan Xiao, G Gannot, M Emmert-Buck, S Srivastava, Paul D. Wagner, Peter E. Barker
… with commercially available mammalian antibodies in cell culture models. IgYs were generated against antigens … for quantitative comparisons of affinity reagents in general is lacking. Here we report direct comparisons … are directed at improving metrology and validated reagents in model systems on which future clinical validation studies …

NIST Intercomparison Exercise Program for Organic Contaminants in the Marine Environment: Description and Results of 2007 Organic Intercomparison Exercises

June 1, 2008
Author(s)
Michele M. Schantz, Reenie M. Parris, Stephen A. Wise
… In support of marine monitoring measurement programs, the National Institute of Standards and Technology (NIST) conducts interlaboratory comparison … The intercomparibility of data after participation in these exercises provides one mechanism for participating …

EVALUATION OF MULTI-SAMPLE MICRO-CAPILLARY RHEOMETER

May 5, 2008
Author(s)
Doyoung Moon, Anthony J. Bur, Kalman D. Migler
… the MMR against two National Institute of Standards and Technology (NIST) Standard Reference Materials (SRMs), three … will be particularly useful as a combinatorial method and in cases of limited material quantity (typical sample size _ … range of the instrument is eight orders of magnitude in viscosity and four orders of magnitude in shear rate. …

Electromagnetic Airframe Penetration Measurements of the FAA's 737-200

May 2, 2008
Author(s)
Chriss A. Grosvenor, David R. Novotny, Dennis G. Camell, Galen H. Koepke, Robert Johnk, Seturnino Canales
… The National Institute of Standards and Technology has completed shielding effectiveness/penetration … cavity coupling characteristics between antennas placed in various compartments inside the aircraft and antennas … the data. Internal coupling between two antennas placed in the aircraft at different locations was studied and a …

Evaluation of a Capacitance Scaling System

December 1, 2007
Author(s)
Svetlana Avramov-Zamurovic, Andrew D. Koffman, Bryan C. Waltrip, Yicheng Wang
… implemented at the National Institute of Standards and Technology (NIST). Standard four-terminal-pair (4TP) … a capacitance scaling calibration procedure introduced in [3]. This system operates over frequencies from 100 Hz to … measured with a combined standard uncertainty of 5 parts in 10 6 at 1 kHz and 7 parts in 10 6 at 10 kHz. …

Quantum key distribution at 1550 nm with twin superconducting single-photon detectors

December 15, 2006
Author(s)
Robert Hadfield, Jonathan L. Habif, John Schlafer, Robert E. Schwall, Sae Woo Nam
… on the full implementation of a superconducting detector technology in a fiber-based quantum key distribution (QKD) link. … The authors use twin SSPDs to perform the BB84 protocol in a 1550 nm fiber-based QKD link clocked at 3.3 MHz. They …

Real-Time Speaker Verification with a Microphone Array

November 27, 2006
Author(s)
G. Mei, R. Xu, R. Lao, C. Kwan, Vincent M. Stanford
… both developed by National Institute of Standards and Technology in support of multimodal research communities. A microphone … World Congress in Computer Science, Computer Engineering, and Applied …

Assessment of Access Control Systems

September 29, 2006
Author(s)
Chung Tong Hu, David F. Ferraiolo, David R. Kuhn
… safety, or defense include some form of access control. In many systems access control takes the form of a simple … but many require more sophisticated and complex control. In addition to the authentication mechanism (such as a … used access control services available in information technology systems, their structure, where they are likely to …

Knowledge Integration for Bio-Threat Response

September 1, 2005
Author(s)
K Verspoor, O Bodenreider, P Karp, H Kelly, S Loranger, M Musen, Ram D. Sriram, C Wroe, C Joslyn, J Ambrosiano
… to link and unify heterogeneous databases. While research in all these areas continues, the gaps to the needed …

Fabrication and Measurement of Tall Stacked Arrays of SNS Josephson Junctions

June 1, 2005
Author(s)
Nicolas Hadacek, Paul Dresselhaus, Yonuk Chong, Samuel Benz, John E. Bonevich
… plasma etcher. This process produces vertical profiles in thin-film multilayers of alternating superconducting and … a vertical etch is necessary to obtain uniform properties in high-density arrays in order to achieve operating margins for voltage standard …

Practical High-Resolution Programmable Josephson Voltage Standards using Double- and Triple-Stacked MoSi 2 -Barrier Junctions

June 1, 2005
Author(s)
Yonuk Chong, Charles J. Burroughs, Paul Dresselhaus, Nicolas Hadacek, Hirotake Yamamori, Samuel Benz
… metal- superconductor Josephson junction technology for the next generation quantum voltage standards. … of increasing the output voltage and operating margins. In this paper, we present fully functioning programmable … to achieve higher voltage resolution. Thermal transport in these high-density chips will be briefly discussed. …

Securing Voice Over IP Networks

May 27, 2005
Author(s)
T J. Walsh, D. Richard Kuhn
… packet-switched IP networks - is one of the hottest trends in telecommunications. As with any new technology, VOIP introduces both opportunities and problems. … may assume that since digitized voice travels in packets, they can simply plug VOIP components into their …

Double Anomalous Peak in the Heat Capacity Just Below the Triple Point of Staurated e-H 2 With FeO(OH)^u1

January 1, 2005
Author(s)
T Nakano, Weston L. Tew, O Tamura, H Sakurai
… fabricated at the National Institute of Standards and Technology and at the National Metrology Institute of Japan. An anomalous double peak has been observed in their heat capacities at temperatures just below the … of the melting temperature of a portion of solid Hd2 in close physical proximity to the catalyst. The reduction of …

Adaptive Road Detection through Continuous Environment Learning

October 15, 2004
Author(s)
M Foedissch, A Takeuchi
… Division of the National Institute of Standards and Technology has been engaged for several years in developing real-time systems for autonomous driving. A … network continuously based on the road image structure. In order to reduce the possibility of misclassifying road and …

Securing Voice Over Internet Protocol (IP) Networks

October 1, 2004
Author(s)
Thomas J. Walsh, David R. Kuhn
… packet-switched IP networks - is one of the hottest trends in telecommunications. As with any new technology, VOIP introduces both opportunities and problems. … may assume that since digitized voice travels in packets, they can simply plug VOIP components into their …
Displaying 10451 - 10475 of 13225
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