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Displaying 41501 - 41525 of 74400

Micro Channel Heat Transfer, Pressure Drop and Macro Prediction Methods

June 1, 2003
Author(s)
Mark A. Kedzierski
Advances in the basic understanding of fluid physics have opened an era of unprecedented application of heat transfer processes, and fluid dynamics systems using micro channels. One of the greatest obstacles to the application of leading edge fluid physics

Microwave Surface Impedance and Nonlinear Properties of MgB 2 Films

June 1, 2003
Author(s)
James Booth, Sang Y. Lee, Kenneth Leong, J. H. Lee, J. Lim, H. N. Lee, S. H. Moon, B. Oh
We have measured the temperature dependence of the microwave surface impedance and the nonlinear response of high-quality MgB 2 films on c-cut sapphire at temperatures below 40 K. MgB 2 films with surface resistance (Rs) as low as 0.09 mOhm} at 8 K and 19

MOBY, A Radiometric Buoy for Performance Monitoring and Vicarious Calibration of Satellite Ocean Color Sensors: Measurement and Data Analysis Protocols

June 1, 2003
Author(s)
D K. Clark, Marilyn Y. Murphy, M Yarbrough, M Feinholz, S Flora, W Broenkow, B. Carol Johnson, Steven W. Brown, Y S. Kim, J Mueller
The Marine Optical Buoy (MOBY) (Clark et al. 1997) is the centerpiece of the primary ocean measurement site for calibration of satellite ocean color sensors based on independent in situ measurements. Since late 1996, the time series of normalized water

NIST Research Library Benchmark Study, 2001: Summary Report

June 1, 2003
Author(s)
P J. Deutsch, Diane Cunningham, L A. Greenhouse, Susan L. Makar, W F. Overman, Susan A. Sanders, Barbara P. Silcox
In 2002, the NIST Research Library of the Information Services Division, Technology Services, benchmarked itself against other science and technology libraries. These libraries had similar focus areas and were comparable in size. The study compared library

NIST/SEMATECH Engineering Statistics Handbook Chapter 8: Reliability

June 1, 2003
Author(s)
Alan Smeaton
In today's technological world nearly everyone depends upon the continued functioning of a wide array of complex machinery and equipment for their everyday health, safety, mobility and economic welfare. Continual assessment of product reliability, and on

Observation of Photons Emitted During Inhibited Spontaneous Emission

June 1, 2003
Author(s)
D A. Branning, P G. Kwiat, Alan L. Migdall
We present the results of an experiment to observe inhibited spontaneous emission of a parametric downconverter by an optical cavity whose switching time is short compared with the round trip time of the light. The question is, can photons be counted

Obtaining Spectral Data for Colorimetry

June 1, 2003
Author(s)
Yoshihiro Ohno
Simulation analyses have been conducted on the colorimetric errors associated with the data interval, bandpass, and wavelength errors of a spectrometer, using spectral data of 43 object color samples including those from CIE 13.3, BCRA tiles, and the

Performance of 32-channel Time-Division SQUID Multiplexer for Cryogenic Detector Arrays

June 1, 2003
Author(s)
Joern Beyer, Piet DeKorte, Carl D. Reintsema, Sae Woo Nam, Gene C. Hilton, Leila R. Vale, Kent D. Irwin
Multiplexed readout is a practical requirement for the successful deployment of large-scale cryogenic detector arrays in applications ranging from x-ray microanalysis to sub-millimeter astronomy. We report on the development of a time-division SQUID

Performance of Service-Discovery Architectures in Response to Node Failures

June 1, 2003
Author(s)
Christopher E. Dabrowski, Kevin L. Mills, Andrew L. Rukhin
Current trends suggest future software systems will rely on service-discovery protocols to combine and recombine distributed services dynamically in reaction to changing conditions. We investigate the ability of selected designs for service-discovery

Precision Wavelength Metrology with a Fourier Transform Spectrometer

June 1, 2003
Author(s)
D. Veza, Marc L. Salit, John C. Travis, Craig J. Sansonetti
We have investigated the intrinsic accuracy of the optical frequency scale in spectra acquired by a Fourier Transform Spectrometer (FTS). The uncalibrated accuracy of the FTS optical frequency axis is about 1 part in 10 5. This uncertainty can be reduced

Report of Test on Experimental Conditions and Preliminary Results for the International Fire Model Benchmarking And Validation Exercise #3

June 1, 2003
Author(s)
Anthony P. Hamins, Alexander Maranghides, Erik L. Johnsson, Michelle K. Donnelly, Jiann C. Yang, George W. Mulholland
As part of its Fire Risk Research Program, the NRC (Nuclear regulatory Commission) and NIST (National Institute of Standards and Technology) are participating in an International Collaborative Fire Model Project (ICFMP) to assess and validate fire computer

Revised Thermodynamic Description for the Co-Mo System

June 1, 2003
Author(s)
Albert Davydov, Ursula R. Kattner
The previously assessed Co-Mo system (1999Dav) has been partially revised: thermodynamic descriptions for the liquid, , ς and bcc phases were amended in the attempt to eliminate some unrealistic phase diagram features, such as inverse liquid miscibility

SCATMECH: Polarized Light Scattering C++Class Library (Version 4.00)

June 1, 2003
Author(s)
Thomas A. Germer
A C++ object class library has been developed to distribute bidirectional reflectance distribution function (BRDF) models for light scattering from surfaces. Emphasis has been given to those models which are physically-based and which predict the

Security Policy Management for Handheld Devices

June 1, 2003
Author(s)
Wayne Jansen, Athanasios T. Karygiannis, M Iorga, Serban I. Gavrila, Vlad Korolev
The adoption of wireless technologies and handheld devices is becoming widespread in business, industry, and government organizations. The use of handheld devices introduces new risks to existing enterprise computing resources. Therefore, organizations
Displaying 41501 - 41525 of 74400
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