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Topic Area: Math

Displaying records 101 to 110 of 221 records.
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101. 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

102. 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

103. 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

104. 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

105. 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

106. 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

107. 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

108. An Interaction-based Test Sequence Generation Approach for Testing Web Applications
Topic: Math
Published: 12/3/2008
Authors: Wenhua Wang, Sreedevi Sampath, Yu Lei, Raghu N Kacker
Abstract: Web applications often use dynamic pages that interact with each other by accessing shared objects, e.g., session objects. Interactions between dynamic pages need to be carefully tested, as they may give rise to subtle faults that cannot be detected ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=890020

109. Quantum Simulations of Classical Annealing Processes
Topic: Math
Published: 9/26/2008
Authors: Rolando Somma, S. Boixo, Howard Barnum, Emanuel H Knill
Abstract: We describe a quantum algorithm that solves combinatorial optimization problems by quantum simulation of a classical simulated annealing process. Our algorithm exploits quantum walks and the quantum Zeno effect induced by evolution randomization. It ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=152119

110. Bayesian Posterior Predictive p-value of Statistical Consistency in Interlaboratory Evaluations
Topic: Math
Published: 9/17/2008
Authors: Raghu N Kacker, Alistair Forbes, Ruediger Kessel, K D Sommer
Abstract: Results from an interlaboratory evaluation are said to be statistically consistent if they fit a normal (Gaussian) consistency model which postulates that the results have the same unknown expected value and stated variances and covariances. We prop ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150672



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