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Displaying records 81 to 90 of 153 records.
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81. PREDICTING MACROSCOPIC DYNAMICS IN LARGE DISTRIBUTED SYSTEMS
Topic: Modeling
Published: 7/18/2011
Authors: Kevin L Mills, James J Filliben
Abstract: In this paper, we outline an approach that can be used to predict macroscopic dynamics when new components are deployed in a large distributed system. Our approach combines two main methods: scale reduction and multidimensional data analysis techniqu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908101

82. An Efficient Sensitivity Analysis Method for Large Cloud Simulations
Topic: Modeling
Published: 7/4/2011
Author: Kevin L Mills
Abstract: We describe Koala, an infrastructure Cloud simulator inspired by the Amazon Elastic Compute Cloud (EC2). We conduct a sensitivity analysis of Koala, revealing eight behavioral dimensions, which are influenced significantly by six parameters. Our find ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907790

83. Thin Film Dynamics on a Prolate Ellipsoid with Application to the Cornea
Topic: Modeling
Published: 6/9/2011
Authors: Richard J Braun, R. Usha, Geoffrey B McFadden, T. A. Driscoll, L. P. Cook, P. E. King-Smith
Abstract: We study the flow of a thin fluid film on a prolate ellipsoid that is a good approximation to the shape of the human cornea. Two lubrication models for the dynamics of the film are studied in prolate spheroidal coordinates which are appropriate for ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903442

84. On Parameter Differentiation for Integral Representations of Associated Legendre Functions
Topic: Modeling
Published: 5/24/2011
Author: Howard S Cohl
Abstract: For integral representations of associated Legendre functions in terms of modified Bessel functions, we establish justification for differentiation under the integral sign with respect to parameters. With this justification, derivatives for associate ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907710

85. Assessing microscale heterogeneity in batches of reference materials using microbeam XRF
Topic: Modeling
Published: 5/17/2011
Authors: John L Molloy, John R Sieber
Abstract: Principal component analysis (PCA), microbeam X-ray Fluorescence Spectrometry (µXRF), and Monte Carlo simulations are used to illustrate a methodology for assessing the sample microheterogeneity for large sets of materials. PCA is demonstrated to de ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906130

86. Modeling queuing dynamics of TCP: a simple model and its empirical validation.
Topic: Modeling
Published: 5/6/2011
Authors: Daniel Ilya Genin, Anastase Nakassis
Abstract: Understanding queuing dynamics of TCP is important for correct router buffer sizing as well as for optimizing the performance of the TCP protocol itself. However, modeling of buffer content dynamics under TCP has received relatively little attent ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907891

87. Salient Local 3D Features for 3D Shape Retrieval
Topic: Modeling
Published: 4/7/2011
Authors: Afzal A Godil, Asim Wagan
Abstract: In this paper we describe a new formulation for the 3D salient local features based on the voxel grid inspired by the Scale Invariant Feature Transform (SIFT). We use it to identify the salient keypoints (invariant points) on a 3D voxelized model and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907645

88. Onset of Morphological Instability in Two Binary Liquid Layers
Topic: Modeling
Published: 4/1/2011
Authors: Geoffrey B McFadden, Sam Ray Coriell, Aaron Lott
Abstract: We consider the linear stability of a horizontal fluid bilayer subject to vertical heating. The two layers consist of a binary fluid that has undergone a phase transition, resulting in a horizontal interphase boundary between two phases with differ ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907354

89. A General Model for the Dynamics of Cell Volume, Global Stability, and Optimal Control
Topic: Modeling
Published: 2/11/2011
Author: James D. Benson
Abstract: Cell volume and concentration regulation in the presence of changing extracellular environments has been studied for centuries, and recently a general nondimensional model was introduced that encompassed solute and solvent transmembrane flux for a wi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904647

90. Stability Analysis of Several Non-dilute Multiple Solute Transport Equations
Topic: Modeling
Published: 1/4/2011
Author: James D. Benson
Abstract: Recently a new solute and solvent transmembrane cellular transport model accounting for non-dilute solute concentrations was introduced. This model depends on a second or third order polynomial expansion in mole fraction of Gibbs energy for solutes a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905292



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