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Displaying 52076 - 52100 of 74459

Properties of Process Gases Determined Accurately With Acoustic Techniques

November 1, 1998
Author(s)
John J. Hurly
Our laboratory has developed a highly precise, automated apparatus for measuring sound speeds, viscosity, and thermal conductivity in hazardous and/or corrosive process gases throughout the temperature and pressure ranges of interest to the semiconductor

Report of the 83rd National Conference on Weights and Measures

November 1, 1998
Author(s)
G M. Ugiansky, J L. Land
The 83rd Annual Meeting of the National Conference on Weights and Measures (NCWM) was held July 12 through July 16, 1998, at the Hilton Hotel in Portland, Oregon. The theme of the meeting was Working Together for Equity.Reports by the Standing and Annual

Shear Induced Restructuring of Dense Colloidal Silica Gels

November 1, 1998
Author(s)
Howard J. Hanley, Chris D. Muzny, B D. Butler, G C. Straty, J Barlett, E. Drabarek
The viscometric properties and structure of concentrated sheared colloidal gels, formed at a pH = 8 from a commercial aqueous sol of 7 nm diameter silica particles, were investigated.

Support Vector Machines Applied to Face Recognition

November 1, 1998
Author(s)
P J. Phillips
Face recognition is a K class problem, where K is the number of known individuals; and support vector machines (SVMs) are a binary classification method. By reformulating the face recognition problem and re-interpreting the output of the SVM classifier, we

Synthesis, Characterization, and Crystal Structure of Dicalcium Glutarylbisphosphonate Dihydrate - Covalently Pillared Layer Structure with the Potential for Epitaxial Growth on Hydroxyapatite.

November 1, 1998
Author(s)
M Mathew, Bruce O. Fowler, E Breuer, G Golomb, I S. Alferiev, Naomi Eidelman
A new bisacylphosphonate, glutarylbisphosphonate (GlBP) was synthesized. Sodium and calcium salts of the GlBP, disodium dihydrogenglutarylbisphosphonate, NaHO 3P-C(O)-(CH 2) 3C(O)-PO 3Hna and dicalcium glutarylbisphosphonate dihydrate, Ca 2[O 3P-C(O)-(CH 2

The High-Resolution Raman Spectrum of the N 4 Band of Diborane

November 1, 1998
Author(s)
J L. Domenech, D Bermejo, J.- M. Flaud, Walter J. Lafferty
The high resolution Raman spectra of the Ņ 4 bands of 11B 2H 6 and 11B 10BH 6 have been recorded and analyzed. The recordings have been made using a high resolution spectrometer based on the inverse Raman effect, with an instrumental resolution of 0.007 cm

The OOF Manual: Version 1.0

November 1, 1998
Author(s)
W C. Carter, Stephen A. Langer, Lin-Sien H. Lum
OOF and PPM200F are programs developed at NIST to investigate the properties of microstructures. The user starts with an image of a real or simulated microstructure, assigns material properties to the features in the image, and performs virtual experiments

Theory of Optical Absorption with Electron-Hole Attraction

November 1, 1998
Author(s)
Eric L. Shirley, L Benedict, Robert B. Bohn
This work presents calculations of the optical absorption spectra of semiconductors and insulators. The background and underlying physics are discussed, and the efficient computational method used is sketched. Results for eight solids are presented and

Toward a National Standards Strategy Conference Summary Report

November 1, 1998
Author(s)
K J. Leuteritz, W G. Leight
On September 23, 1998, the National Institute of Standards and Technology (NIST) and the American National Standards Institute (ANSI) co-hosted a summit conference, Toward a National Standards Strategy To meet Global Needs. NIST Director Ray Kammer and

Turbidity, Light Scattering, and Coexistence Curve Data for the Ionic Binary Mixture Triethyl N-Hexyl Ammonium Triethyl N-Hexyl Borate in Diphenyl Ether

November 1, 1998
Author(s)
S. Wiegand, M E. Briggs, M Kleemeier, W Schroer, Johanna Levelt Sengers
We report turbidity, light scattering, and coexistence curve data for a solution of triethyl n-hexyl ammonium triethyl n-hexyl borate in diphenyl ether. We recently reported that the present sample shows much higher turbidity than that of K. S. Zhang, M. E

Using Model Checking to Generate Tests From Specifications

November 1, 1998
Author(s)
P E. Ammann, Paul E. Black, William J. Majurski
We apply a model checker to the problem of test generation using a new application of mutation analysis. We define syntactic operators, each of which produces a slight variation on a given model. The operators define a form of mutation analysis at the

Document Image Coding for Processing and Retrieval

October 30, 1998
Author(s)
O E. Kia, D Doermann
Document images belong to a unique class of images where the information content is contained in the language represented by a series of symbols on the page rather than in the visual objects themselves. From this, a new image coding strategy can be

Role-Based Access Control for the Web

October 29, 1998
Author(s)
John Barkley, David R. Kuhn, Lynne S. Rosenthal, Mark Skall, Anthony V. Cincotta
Establishing and maintaining a presence on the World Wide Web (Web), once a sideline for U.S. industry, has become a key strategic aspect of marketing and sales. Many companies have demonstrated that a well designed Web site can have a positive effect on

Blind Men and Elephants: Six Approaches to TREC Data

October 28, 1998
Author(s)
D L. Banks, Paul D. Over, Nien F. Zhang
The paper reviews six recent efforts to better understand performance measurements on information retrieval (IR) within the framework of the Text REtrieval Conferences (TREC): analysis of variance, cluster analyses, rank correlations, beadplots
Displaying 52076 - 52100 of 74459
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