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Mathematics & Statistics

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Displaying 726 - 750 of 872

Web-Based 3D Visualization in a Digital Library of Mathematical Functions

November 1, 2004
Author(s)
Qiming Wang, Bonita V. Saunders
The National Institute of Standards and Technology (NIST) is developing a digital library of mathematical functions to replace the widely used National Bureau of Standards Handbook of Mathematical Functions published in 1964 [1]. The NIST Digital Library

Pose of I-Beams for Construction Site Automation

September 21, 2004
Author(s)
David E. Gilsinn, Geraldine S. Cheok, Alan M. Lytle
Automation of construction processes can result in reduced project costs and increased worker safety. A process that lends itself to automation is the picking and placing of objects. However, determining the pose (position and orientation) of an object is

Tool Length-Dependent Stability Surfaces

April 20, 2004
Author(s)
T L. Schmitz, J C. Ziegert, Timothy J. Burns, Brian S. Dutterer, W R. Winfough
This paper describes the development of three-dimensional stability surfaces, or maps, that combine the traditional dependence of allowable (chatter-free) chip width on spindle speed with the inherent dependence on tool overhang length, due to the

Parallel Programming with Interoperable MPI

February 1, 2004
Author(s)
William L. George, John G. Hagedorn, J E. Devaney
In this article we describe IMPI (Interoperable Message Passing Interface), a message passing protocol that allows you to easily run parallel programs across multiple clusters, SMPs (symmetric multiprocessors), parallel machines, personal computers, and

Approximating Limit Cycles of a Van der Pol Equation with Delay

January 15, 2004
Author(s)
David E. Gilsinn
In this paper a theorem of Stokes is used to establish the existence of a periodic solution of a Van der Pol equation with fixed delay in the neighborhood of an approximating solution that satisfies a certain noncriticality condition.

Using Nonoscillatory Splines to Model Urban Environments

January 15, 2004
Author(s)
David E. Gilsinn, Marjorie A. McClain, Christoph J. Witzgall
In this paper we introduce the notion of Lavery splines and examine their properties in the univariate case. We also discuss some of the details involved with computing these splines on irregularly spaced data.