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Displaying 44851 - 44875 of 74167

Transformation, Ranking, and Clustering for Face Recognition Algorithm Performance

January 1, 2002
Author(s)
Stefan D. Leigh, Nathanael A. Heckert, Andrew L. Rukhin, P J. Phillips, Patrick J. Grother, E M. Newton, M Moody, K Kniskern, S Heath
The performance of face recognition algorithms is recently of increased interest, although to date empirical analyses of algorithms have been limited to rank-based scores such a cumulative match score and receiver operating characteristic. This paper

Transitions Between Inherent Structures in Water

January 1, 2002
Author(s)
N Giovambattista, Francis W. Starr, F Sciortino, S V. Buldyrev, H E. Stanley
The energy landscape approach has been useful to help understand the dynamic properties of supercooled liquids and their connection between these properties and thermodynamics. The analysis in numerical models of the inherent structure (IS) trajectories --

Transverse compressive stress, fatigue, and magnetic substrate effects on the critical current density of Y-Ba-Cu-O coated RABiTS tapes

January 1, 2002
Author(s)
Najib Cheggour, John (Jack) W. Ekin, Cameron C. Clickner, Ron Feenstra, P Goyal, D F. Paranthaman, D F. Lee, D M. Kroeger, D. K. Christen
The electromechanical properties of (0.3 υm thick) yttrium-barium-copper-oxide (YBCO) coatings on buffered pure-nickel rolling-assisted-biaxially-textured substrates (RABiTS) were measured at 76 K and self magnetic field. YBCO coatings on buffered

Trapped Highly Charged Ion Plasmas

January 1, 2002
Author(s)
E Takacs, John D. Gillaspy
Electron beam Ion Trap (EBIT) devices are reviewed with special attention to applications in highly charged ion plasma research. EBIT properties are presented based on information extracted from a variety of experiments presented in the literature. Topics

Tri-Alpha-Napthyl Benzene as a Crystalline or Glassy Matrix for Matrix-Assisted Laser Desorption/Ionization: A Model System for the Study of Effects of Dispersion of Polymer Samples at a Molecular Level

January 1, 2002
Author(s)
Barry J. Bauer, Kathleen M. Flynn, Da-Wei Liu, William R. Blair
Tri-a-napthyl benzene (TaNB) is used as a matrix in matrix-assisted laser desorption/ionization (MALDI) spectroscopy. Electrosprayed TaNB is crystalline and has a melting point of 180 2 C. After heating above the melting point, TaNB becomes amorphous with

Triggered Image Capture for High Speed Display Characterization

January 1, 2002
Author(s)
John W. Roberts
¿¿¿Precision display measurements often involve the integration of light measurements over many frames. Newer display technologies with high speed light modulators such as micromirrors are able to make sophisticated use of temporal modulation. This may

Two-Species Magneto-Optical Trap With 40 K and 87 Rb

January 1, 2002
Author(s)
J Goldwin, S Papp, B. L. DeMarco, D S. Jin
We trap and cool a gas composed of 40K and 87 Rb, using a two-species magneto-optical trap (MOT). This trap represents the first step towards cooling the Bose-Fermi mixture to quantum degeneracy. Laser light for the MOT is derived from laser diodes and

Unexpected Ground State Structures in Relaxor Ferroelectrics

January 1, 2002
Author(s)
Benjamin P. Burton, Eric J. Cockayne
Cluster expansion Hamiltonians derived from pseudopotential total energies were used to predict ground-state (GS) cation configurations for some A(B^{3+}1⁄2B'^{5+}1⁄2)O3, A(B^{2+}{1/3}B'^{5+}{2/3})O3 , and [A^{1+}1⁄2A'^{3+}1⁄2]BO3 perovskites. Predicted GS

Uniformity Studies of Congruent LiNbO 3 by Means of Maker Fringe Analysis

January 1, 2002
Author(s)
Norman Sanford, J A. Aust
Nonlinear optical analysis was used to map the uniformity of LiNbO 3 wafers in terms of birefringence, composition, thickness and strain. Birefringence variations are directly related to variations in the composition of the material. The typical variation
Displaying 44851 - 44875 of 74167
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