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Displaying 1276 - 1300 of 1916

Securing Voice Over IP Networks

May 27, 2005
Author(s)
T J. Walsh, D. Richard Kuhn
Voice over IP - the transmission of voice over traditional packet-switched IP networks - is one of the hottest trends in telecommunications. As with any new technology, VOIP introduces both opportunities and problems. Lower cost and greater flexibility are

Securing Voice Over Internet Protocol (IP) Networks

October 1, 2004
Author(s)
Thomas J. Walsh, David R. Kuhn
Voice over IP - the transmission of voice over traditional packet-switched IP networks - is one of the hottest trends in telecommunications. As with any new technology, VOIP introduces both opportunities and problems. Lower cost and greater flexibility are

The Metallurgical Analysis of Wrought Iron from the RMS Titanic

September 1, 2003
Author(s)
J J. Hooper, Timothy J. Foecke, L Graham, Timothy P. Weihs
In this paper, traditional metallography combined with image analysis, mechanical testing, and micromechanical modeling are used to understand the variation in the mechanical properties of wrought iron as a function of its microstructure. Thousands of

A High-Speed Thermal Imaging System for Semiconductor Device Analysis

April 1, 2001
Author(s)
Allen R. Hefner Jr., David W. Berning, David L. Blackburn, Christophe C. Chapuy, Sebastien Bouche
A new high-speed transient thermal imaging system is presented that provides the capability to measure the transient temperature distributions on the surface of a silicon chip with 1 υs time, and 15 υm spatial resolution. The system uses virtual instrument

Superconducting Transition-Edge-Microcalorimeter X-ray Spectrometer with 2 eV Energy Resolution at 1.5 keV

December 31, 2000
Author(s)
David A. Wollman, Sae Woo Nam, Dale Newbury, Gene C. Hilton, Kent D. Irwin, Norman F. Bergren, Steven Deiker, David A. Rudman, John M. Martinis
We describe the operation and performance of a prototype microcalorimeter ?energy-dispersive? (nondispersive) x-ray spectrometer (mcal EDS) developed at NIST for use in x-ray microanalysis and x-ray astronomy. The low-energy microcalorimeter detector

Quantum Key Distribution With 1.25 Gbps Clock Synchronization

May 1, 2004
Author(s)
Joshua C. Bienfang, Alex J. Gross, Alan Mink, Barry J. Hershman, Anastase Nakassis, Xiao Tang, David H. Su, Charles W. Clark, Carl J. Williams, Edward W. Hagley, J Wen, R Lu
… Free-space digital optics, optical communications, photon couting, …
Displaying 1276 - 1300 of 1916
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