Results 11 to 20 of about 996,469 (291)

On orthogonal polynomials and related discrete integrable systems [PDF]

open access: yes, 2006
Orthogonal polynomials arise in many areas of mathematics and have been the subject of interest by many mathematicians. In recent years this interest has often arisen from outside the orthogonal polynomial community after their connection with ...
Spicer, Paul Edward
core   +7 more sources

ORTHOGONAL ARRAYS OBTAINED BY ARRAY SUBTRACTION

open access: yesJournal of Applied Analysis & Computation, 2021
Summary: In this paper, by using the orthogonal decompositions of projection matrices, a new general approach is proposed to construct asymmetrical OAs, namely array subtraction, the operation of which is not the usual subtraction but it is interesting since many so called atoms of asymmetrical OAs can be obtained by the array subtraction.
Luo, Chun   +4 more
openaire   +2 more sources

Hilbert Bases for Orthogonal Arrays [PDF]

open access: yesJournal of Statistical Theory and Practice, 2007
In this paper, we relate the problem of generating all 2-level orthogonal arrays of given dimension and force, i.e. elements in OA$(n,m)$, where $n$ is the number of factors and $m$ the force, to the solution of an Integer Programming problem involving rational convex cones. We do not restrict the number of points in the array, i.e. we admit any number
CARLINI, ENRICO, PISTONE, Giovanni
openaire   +3 more sources

Robust approaches to remote calibration of a transmitting array [PDF]

open access: yes, 2010
We consider the problem of estimating the gains and phases of the RF channels of a M-element transmitting array, based on a calibration procedure where M orthogonal signals are sent through M orthogonal beams and received on a single antenna.
Bidon, Stéphanie   +2 more
core   +1 more source

On Orthogonal Arrays

open access: yesThe Annals of Mathematical Statistics, 1966
It was shown in [11] that one can construct orthogonal arrays $(\lambda 2^3, k + 1, 2, 3)$ from arrays $(\lambda 2^2, k, 2, 2)$ with the maximum number of constraints $k + 1$ provided that $k$ is the maximum number of constraints for the arrays of strength two. This result is generalized here to construction of arrays $(\lambda 2^{t + 1}, k + 1, 2, t +
Seiden, Esther, Zemach, Rita
openaire   +2 more sources

An Efficient Method for Performance Monitoring of Active Phased Array Antennas [PDF]

open access: yes, 2009
Modern synthetic aperture radars (SARs) are equipped with active phased array antennas to electronically generate various antenna beams. The TerraSAR-X satellite is a high resolution SAR system launched in June 2007.
Schwerdt, Marco   +2 more
core   +1 more source

Orthogonal methods based ant colony search for solving continuous optimization problems [PDF]

open access: yes, 2008
Research into ant colony algorithms for solving continuous optimization problems forms one of the most significant and promising areas in swarm computation.
Jun Zhang   +5 more
core   +1 more source

Orthogonal Array Experiment in Systems [PDF]

open access: yes, 2010
This paper espouses the application of orthogonal array experiment to solve a class of engineering optimization problems encountered in systems engineering and architecting.
Huynh, Thomas V.
core   +2 more sources

Achieving 3D Beamforming by Non-Synchronous Microphone Array Measurements

open access: yesSensors, 2020
Beamforming technology is an essential method in acoustic imaging or reconstruction, which has been widely used in sound source localization and noise reduction.
Liang Yu, Qixin Guo, Ning Chu, Rui Wang
doaj   +1 more source

Use of orthogonal arrays and design of experiment via Taguchi L9 method in probability of default [PDF]

open access: yesAccounting, 2018
The Taguchi’s orthogonal array is based on a mathematical model of factorial designs. This paper investigates the effects of four parameters in Probability of Default (PD) using Black-Scholes model (BSM) for call option at one period by considering asset
Amir Ahmad Dar, N. Anuradha
doaj   +1 more source

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