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Displaying 47951 - 47975 of 74071

Algebraic Constraints Implying Monotonicity for Cubics

January 1, 2000
Author(s)
Charles D. Fenimore, John M. Libert, M. Brill
While it is straightforward to formulate constraints which ensure a cubic polynomial is monotonic on an interval, such constraints may not be in a form which is suitable for use in standard optimization software. The MATLAB package is typical; the required

An Analysis of Existing Ontological Systems for Applications in Manufacturing

January 1, 2000
Author(s)
Craig I. Schlenoff, Peter O. Denno, Robert W. Ivester, Simon Szykman, Don E. Libes
The objective of this work described in this paper is to move closer to the ultimate goal of seamless system integration using the principle behind ontological engineering to unambiguously define domain-specific concepts. Current integration efforts are

An Automated Benchmarking Toolset

January 1, 2000
Author(s)
M M. Courson, G J. Marcais, Alan Mink, B Traverse
The performance drive of parallel computing and platform upgrades or replacements are among the reasons frequent running of benchmark codes has become commonplace for application and platform evaluation and tuning. NIST is developing a prototype for an

An Optical Sensor for Polymer Injection Molding

January 1, 2000
Author(s)
Anthony J. Bur, C L. Thomas
An optical sensor using fiber optics to access the mold cavity was used to monitor the mold filling and cooling phases of injection molding. The sensor consists of a sapphire window at the end of a sleeved ejector pin into which an optical fiber is

An Overview of Nano-Micro-Meso Scale Manufacturing at NIST

January 1, 2000
Author(s)
E C. Teague, Jun-Feng Song, Bradley N. Damazo, John Evans, Matthew A. Davies, Nicholas G. Dagalakis
The Manufacturing Engineering Laboratory (MEL) has a unique mission of discrete part manufacturing technology within the National Institute of Standards and Technology''s (NIST) mission of measurement, standards, data and infrastructure technology. Several

Angular Distribution of Light Scattered From a Sinusoidal Grating

January 1, 2000
Author(s)
Egon Marx, Thomas A. Germer, Theodore V. Vorburger, B C. Park
The angular distributions of light scattered by gold-coated and aluminum-coated gratings having amplitudes of ~90 nm and periods of 6.67 ¿m were measured and calculated for light incident from a HeNe laser at an angle of 6E. Experimental results are
Displaying 47951 - 47975 of 74071