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Mathematics & Statistics

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Displaying 751 - 775 of 872

Combining Information from Independent Similar Studies Using Random Effect Model

January 1, 2004

Author(s)

Raghu N. Kacker

We compare leading statistical methods to combine information from independent similar studies using random effects model. One of the oldest methods is that of Cochran (1954). The method of Paule and Mandel (1982) was developed to determine the consensus

Constructing Sequence Alignments from a Markov Decision Model with Estimated Parameter Values

January 1, 2004

Author(s)

Fern Y. Hunt, Anthony J. Kearsley, Agnes A. O'Gallagher

Current methods for aligning biological sequences are based on dynamic programming algorithms. If large numbers of sequences or a number of long ones are to be aligned the required computations are expensive in memory and CPU time. In an attempt to bring

Constructing Sequence Alignments from a Markov Decision Model with Estimated Parameter Values

January 1, 2004

Author(s)

Fern Y. Hunt, Anthony J. Kearsley, Agnes A. O'Gallagher

The Dilogarithm Function for Complex Argument

November 8, 2003

Author(s)

L C. Maximon

This paper summarizes the basic properties of the Euler dilogarithm function, often referred to as the Spence function. These include integral representations, series expansions, linear and quadratic transformations, functional relations, numerical values

Statistical Interpretation of Key Comparison Reference Value and Degrees of Equivalence

November 1, 2003

Author(s)

Raghu N. Kacker, Raju V. Datla, Albert C. Parr

This paper responds to comments received by the authors on the paper, Combined Result and Associated Uncertainty from Interlaboratory Evaluations Based on the ISO Guide that appeared in Metrologia, 2002, 39, 279-293.

The Normalized Reduced Form and Cell Mathematical Tools for Lattice Analysis--Symmetry and Similarity

November 1, 2003

Author(s)

Alan D. Mighell

To intelligently and effectively use the crystallographic databases, dierse mathematical and computer tools are required that can delve into the nature of a given lattice or that can cut across a set of lattices to elucidate various types of interlatice

Deconvolving LADAR Images Of Bar Codes for Construction Site Object Recognition

October 1, 2003

Author(s)

David E. Gilsinn, Geraldine S. Cheok, Dianne M. O'Leary

This report discusses a general approach to reconstructing ground truth intensity images of bar codes that have been distorted by LADAR optics. The first part of this report describes the experimental data collection of several bar code images along with

On Use of Bayesian Statistics to Make Guide to the Expression of Uncertainty in Measurement Consistent

September 1, 2003

Author(s)

Raghu N. Kacker, Albert W. Jones

The Guide to the Expression of Uncertainty in Measurement recommends a standardized way of expressing uncertainty in measurement and provides a comprehensive approach for combining information to evaluate uncertainty in all kinds of measurements in science

An Optimization Approach to Multiple Sequence Alignment

July 1, 2003

Author(s)

Fern Y. Hunt, Anthony J. Kearsley, H H Wan

The problem of multiple sequence alignment is recast as an optimization problem using Markov decision theory. One seeks to minimize the expected or average cost of alignment subject to data-derived constraints. In this setting the problem is equivalent to

NIST Digital Library of Mathematical Functions

May 1, 2003

Author(s)

Daniel W. Lozier

NIST (formerly, National Bureau of Standards) has started an ambitious project that aims to produce a successor to Abramowitz and Stegun's {\em Handbook of Mathematical Functions}, published by the National Bureau of Standards in 1964 and reprinted by

Separating Signal From Noise in Global Warming

March 12, 2003

Author(s)

Bert W. Rust

One argument often used against global warming is that the global temperature record is too noisy to allow a clear determination of the signal. This paper presents two models for the signal which suggest that: (1) the warming is accelerating, (2) the

A Linear Programming Based Algorithm for Multiple Sequence Alignments

February 17, 2003

Author(s)

Fern Y. Hunt, Agnes A. O'Gallagher, Anthony J. Kearsley

DIVERSE: A Framework for Building Extensible and Reconfigurable Device Independent Virtual Environments

February 17, 2003

Author(s)

John T. Kelso, L E. Arsenault, Steven G. Satterfield, Peter M. Ketcham, R D. Kriz

We present DIVERSE, a highly modular collection of complementary software packages designed to facilitate the creation of device independent virtual environments. DIVERSE is free/open source software; an API (Application Programming Interface) written in C