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Topic Area: Math

Displaying records 101 to 110 of 226 records.
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101. Atmospheric Retention of Man-made CO^d2^ Emissions
Topic: Math
Published: 6/8/2009
Author: Bert W Rust
Abstract: Rust and Thijsse have shown that global annual average temperature anomalies T(t^di^) vary linearly with atmospheric CO^d2^ concentrations c(t^di^). The c(t^di^) can be related to man-made CO^d2^ emissions F(t^di^) by a linear regression model whose ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902110

102. Rectangular Distribution Whose Width is Not Exactly Known: Isocurvilinear Trapezoidal Distribution
Topic: Math
Published: 6/1/2009
Authors: Raghu N Kacker, James F Lawrence
Abstract: After the Gaussian distribution, the probability distribution most commonly used in evaluating uncertainty in measurement is the rectangular distribution. When the mid-point of a rectangular distribution is fixed but the half-width is uncertain and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=890099

103. Tensor Product Grid Generation for Complex Surface Visualizations in a Digital Library of Mathematical Functions
Topic: Math
Published: 5/25/2009
Authors: Bonita V Saunders, Qiming Wang
Abstract: We have used tensor product B-spline grids to develop accurate plots that wnhance the understanding of high level mathematical functions described in the National Institute of Standards and Technology (NIST) Digital Library of Mathematical Functions. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902656

104. Quadratic Fermionic Interactions Yield Hamiltonians with Large Ground-state Energy Gaps
Topic: Math
Published: 3/24/2009
Authors: Dianne M O'Leary, Michael J. O'Hara
Abstract: Polynomially-large ground-state energy gaps are rare in many-body quantum systems, but required for adiabatic quantum computing. We show analytically that the gap is generically polynomially-large for quadratic fermionic Hamiltonians, first conside ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=890014

105. Fast Iterative Solver for Convection-Diffusion Systems with Spectral Elements
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7574
Topic: Math
Published: 3/5/2009
Authors: Aaron Lott, Howard Elman
Abstract: We introduce a solver and preconditioning technique based on Domain Decomposition and the Fast Diagonalization Method that can be applied to tensor product based discretizations of the steady convection-diffusion equation. The method is based on iter ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902034

106. We'll Take Care of All Your Problems
Topic: Math
Published: 3/1/2009
Author: Isabel M Beichl
Abstract: No abstract
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901368

107. Extending Measurement Science to Interactive Visualization Environments
Topic: Math
Published: 1/30/2009
Authors: Judith Ellen Terrill, William L George, Terence J. Griffin, John G Hagedorn, John T. Kelso, Thomas M Olano, Adele P Peskin, Steven G Satterfield, James S Sims, Jeffrey W Bullard, Joy P Dunkers, Nicos Martys, Agnes (Abbie) O'Gallagher, Gillian Haemer
Abstract: We describe a method for creating a visual laboratory to interactively measure and analyze scientific data. We move the normal activities that scientists perform to understand their data into the visualization environment. The visualization environme ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51227

108. Local Bounds on Effective Hamiltonians for Stabilizer Codes
Topic: Math
Published: 1/22/2009
Authors: Stephen Bullock, Dianne M O'Leary
Abstract: This paper introduces various notion of k-locality of stabilizer codes inherited from the associated stabilizer groups. A choice of generators for the group leads to a Hamiltonian with the code in its groundspace, while a Hamiltonian holding the code ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51274

109. Bifurcations, Center Manifolds, and Periodic Solutions
Topic: Math
Published: 1/15/2009
Author: David E. Gilsinn
Abstract: Nonlinear time delay differential equations are well known to have arisen in models in physiology, biology, and population dynamics. They have also arisen in models of metal cutting processes. Machine tool chatter, from a process called regenerative ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51255

110. Begin at the beginning
Topic: Math
Published: 1/1/2009
Author: Isabel M Beichl
Abstract: No abstract
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900936



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