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Displaying 38776 - 38800 of 73829

A Unified Framework for Mobile Device Security

June 15, 2004
Author(s)
Wayne Jansen, Vlad Korolev, Serban I. Gavrila, T Heute, Clement Seveillac
Present-day handheld devices, such as PDAs, are a useful blend of hardware and software oriented toward the mobile workforce. While they provide the capability to review documents, correspond via electronic mail, manage appointments and contacts, etc

TRC Thermodynamic Tables - Nonhydrocarbons, Supplement 91, 2004

June 14, 2004
Author(s)
Michael D. Frenkel
New table for octyl methanoate containing the density for the real fluid at selected temperatures and pressures; New table for propyl ethanoate containing the density for the real fluid at selected temperatures and pressures; New table for bromomethane

Checks of Amplifier Noise-Parameter Measurements

June 11, 2004
Author(s)
James P. Randa, Dave K. Walker
We propose two verification methods for measurements of noise parameters of amplifiers, particularly low-noise amplifiers (LNAs). One method is a direct measurement of the parameter Trev, the noise temperature from the amplifier input, and the comparison

Extended NVNA Bandwidth for Long-Term Memory Measurements

June 11, 2004
Author(s)
Catherine A. Remley, Dominique Schreurs, Dylan F. Williams, John Wood
We present a new technique for measuring the magnitude and phase of intermodulation products outside the measurement bandwidth of our instrumentation. We apply the technique to measurements of long-term memory effects, and realte our measurements to

Non-Linear Large-Signal Scattering Parameters: Theory and Applications

June 11, 2004
Author(s)
Jeffrey Jargon, Kuldip Gupta, Donald C. DeGroot
We introduce nonlinear large-signal scattering parameters, a new type of frequency-domain mapping that relates incident and reflected signals for sparse-tone inputs. We present a general form of nonlinear large-signal scattering parameters and show that

Available Data and Input Into Models.

June 10, 2004
Author(s)
R F. Fahy
There is a need for better data to improve our knowledge of human behavior in fire. This data can be used in the development and refinement of evacuation models and in the use of such models. Once collected, human behavior data must be published in peer

Controlled Vesicle Self-Assembly in Continuous Two Phase Flow Microfluidic Channels

June 10, 2004
Author(s)
Andreas Jahn, Wyatt N. Vreeland, Laurie E. Locascio, Michael Gaitan
The spontaneous self-assembly of phospholipids into liposomes in aqueous solution results in the encapsulation of reagents into quantized packets in a manner that mimics cellular life-processes. Since their discovery in 1965, liposomes have been used in a

Development and Application Issues of a Spectrally Tunable LED Source

June 8, 2004
Author(s)
George P. Eppeldauer, Steven W. Brown, G Dezsi, Irena Fryc, Yoshihiro Ohno
A spectrally tunable solid state source based on Light Emitting Diodes (LEDs) is being developed at the National Institute of Standards and Technology (NIST). The tunable source will emulate the spectral distributions of various light sources and can be

Radiometer Measurements of a Near-Ambient, Variable-Temperature Noise Standard

June 7, 2004
Author(s)
George Free, James P. Randa, Robert L. Billinger
A near-ambient, variable-temperature noise standard whose physical temperature can be accurately measured was constructed and then measured with the NIST total-power radiometer to test the accuracy of radiometer measurements in the temperature range of 263

2003 AAAI Robot Competition and Exhibition

June 1, 2004
Author(s)
S E. Maxwell, Adam S. Jacoff, J Casper, Brian Weiss, Jean C. Scholtz, H A. Yanco, M Micire, D W. Stroup
The fourth annual Rescue Robot Competition took place at the IJCAI/AAAI 2003 Conference in Acapulco, Mexico. The competition encourages participants to contribute to the field of urban search and rescue (USAR) robotics and provides the competitors with a
Displaying 38776 - 38800 of 73829
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