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Displaying records 121 to 130 of 220 records.
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121. Lattice Sums and the Two-dimensional, Periodic Green s Function for the Helmholtz Equation
Topic: Math
Published: 1/16/2001
Authors: Andrew M Dienstfrey, Fengbo Hang, Jingfang Huang
Abstract: Many algorithms that are currently used for the solution of the Helmholtz equation in periodic domains require the evaluation of the Green s function, G(x, x0). The fact that the natural representation of G via the method of images gives rise to a co ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901516

122. Lattice Symmetry and Identification--The Fundamental Role of Reduced Cells in Materials Characterization
Series: Journal of Research (NIST JRES)
Topic: Math
Published: 2/1/2002
Author: Alan D. Mighell
Abstract: In theory, physical crystals can be represented by idealized mathematical lattices. Under appropriate conditions, these representations can be used for a variety of purposes such as identifying, classifying, and understanding the physical properties ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850554

123. Light a Single Candle: Studying Supernovae
Topic: Math
Published: 3/1/2012
Authors: Dianne M O'Leary, Bert W Rust
Abstract: At peak luminosity, Type Ia supernovae can be even brighter than their parent galaxies, and their light curves display a very uniform and regular behavior. This makes them excellent candidates for a role as standard candles in measuring the distance ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910233

124. Linear Algebra and Sequential Importance Ssampling for Network Reliability
Topic: Math
Published: 12/11/2011
Authors: David G. Harris, Francis Sullivan, Isabel M Beichl
Abstract: The reliability polynomial of a graph gives the probability that a graph is connected as a function of the probability that each edge is connected. The coefficients of the reliability polynomial count the number of connected subgraphs of various size ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909109

125. Linear Stability of Cylindrical Couette Flow Using a Convection Regime Base Flow
Topic: Math
Published: 5/3/2005
Authors: M E Ali, Geoffrey B McFadden
Abstract: Instability of steady circular Couette flow with radial heating across a vertically oriented annulus with inner cylinder rotating and outer cylinder stationary is investigated using linear stability analysis. The convection regime base flow is devel ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150895

126. 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

127. Logarithmic Convexity and the 'Slow Evolution' Constraint in Ill-Posed Initial Value Problems
Topic: Math
Published: 1/15/1999
Author: Alfred S Carasso
Abstract: This paper examines a wide class of ill-posed initial value problems for partial differential equations, and surveys logarithmic convexity results leading to Hoelder-continuous dependence on data for solutions satisfying prescribed bounds. The discus ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150727

128. Lower Bounds for Accessing Information on Pure Pointer Machines
Topic: Math
Published: 7/13/2009
Authors: Brian Dale Cloteaux, Desh Ranjan
Abstract: We study the complexity of representing an array on a Pure Pointer Machine (PPM) or a pointer machine without arithmetic capabilities. In particular, we show that lower bounds in access time for information retrieval on a PPM arise from two different ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=51268

129. MGGHAT User's Guide Version 1.1
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 5948
Topic: Math
Published: 1/1/1997
Author: William F Mitchell
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900802

130. Mathematical Optimization of Procedures for Cryoprotectant Equilibration Using a Toxicity Cost Function
Topic: Math
Published: 1/10/2012
Authors: Adam Zachary Higgins, James Benson, Anthony J Kearsley
Abstract: Cryopreservation nearly universally depends on the equilibration of cells and tissues with high concentrations of permeating chemicals known as cryoprotective agents, or CPAs. Despite their protective properties, CPAs can cause damage as a result of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910486



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