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Displaying 51051 - 51075 of 73881

Quantifying Fire Model Evaluation Using Functional Analysis

January 1, 1999
Author(s)
Richard D. Peacock, Paul A. Reneke, William D. Davis, Walter W. Jones
Comparisons of predictive fire models with each other or with experimental data have been largely qualitative. By treating these time series curves as infinite-dimensional vectors, a branch of mathematics called functional analysis defines geometrically

Quantum Computation, Spectroscopy of Trapped Ions, and Schrodinger Cat

January 1, 1999
Author(s)
David J. Wineland, C Monroe, Wayne M. Itano, D Kielpinski, B E. King, C J. Myatt
We summarize e orts at NIST to implement quantum computation using trapped ions, based on a scheme proposed by J.I. Cirac and P. Zoller (Innsbruck University). The use of quantum logic to create entangled states, which can maximize the quantum-limited

Radiationless Resonant Raman Scattering at the Ar K Edge

January 1, 1999
Author(s)
Thomas W. LeBrun, S H. Southworth, G B. Armen, M A. MacDonald, Y Azuma
Partial cross sections for Ar K-LZL3(1 D2)np, n=4 and 5 spectator Auger states excited by x-ray absorption across the K-edge were measured and compared with calculations based on the theory or radiationless resonant Raman scattering. Core relaxation and

Real-Time Measurements of Condensed-Phase Spectra in Burning Polymers

January 1, 1999
Author(s)
Marc R. Nyden
A major goal of the Building and Fire Research Laboratory is to provide the polymer industry with the technical understanding and measurement tools that are needed to develop a new generation of fire resistant materials. In the pursuit of this goal, we

Real-time Single-workstation Obstacle Avoidance Using Only Wide-field Flow Divergence

January 1, 1999
Author(s)
Theodore(Ted) Camus, David Coombs, Martin Herman, Tsai Hong Hong
This paper describes a real-time robot vision system which uses only the divergence of the optical flow field for both steering control and collision detection. The robot has wandered about the lab at 20 cm/s for as long as 26 minutes without collision
Displaying 51051 - 51075 of 73881
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