Results 21 to 30 of about 564,243 (186)

Polynomial iterative algorithms for coloring and analyzing random graphs [PDF]

open access: yes, 2003
We study the graph coloring problem over random graphs of finite average connectivity $c$. Given a number $q$ of available colors, we find that graphs with low connectivity admit almost always a proper coloring whereas graphs with high connectivity are ...
A. Braunstein   +31 more
core   +4 more sources

Algorithm for determining two-periodic steady-states in AC machines directly in time domain

open access: yesArchives of Electrical Engineering, 2016
This paper describes an algorithm for finding steady states in AC machines for the cases of their two-periodic nature. The algorithm enables to specify the steady-state solution identified directly in time domain despite of the fact that two-periodic ...
Sobczyk Tadeusz J.
doaj   +1 more source

Self-stabilizing Numerical Iterative Computation [PDF]

open access: yes, 2008
Many challenging tasks in sensor networks, including sensor calibration, ranking of nodes, monitoring, event region detection, collaborative filtering, collaborative signal processing, {\em etc.}, can be formulated as a problem of solving a linear system
D.P. Bertsekas   +6 more
core   +3 more sources

Iterative Algorithms for General Multivalued Variational Inequalities

open access: yesAbstract and Applied Analysis, 2012
We introduce and study some new classes of variational inequalities and the Wiener-Hopf equations. Using essentially the projection technique, we establish the equivalence between these problems.
Yonghong Yao   +3 more
doaj   +1 more source

Conjugate Gradient Hard Thresholding Pursuit Algorithm for Sparse Signal Recovery

open access: yesAlgorithms, 2019
We propose a new iterative greedy algorithm to reconstruct sparse signals in Compressed Sensing. The algorithm, called Conjugate Gradient Hard Thresholding Pursuit (CGHTP), is a simple combination of Hard Thresholding Pursuit (HTP) and Conjugate Gradient
Yanfeng Zhang   +4 more
doaj   +1 more source

Parallel Perturbed Gauss-Newton State Estimator Based on Fortescue Transformation for Unbalanced Power Systems

open access: yesJournal of Modern Power Systems and Clean Energy, 2022
This letter extends the complex-variable perturbed Gauss-Newton method to estimate the state of unbalanced power systems by exploiting the Fortescue transformation.
Izudin Dzafic
doaj   +1 more source

GPU acceleration of time-domain fluorescence lifetime imaging [PDF]

open access: yes, 2016
Fluorescence lifetime imaging microscopy (FLIM) plays a significant role in biological sciences, chemistry, and medical research. We propose a Graphic Processing Units (GPUs) based FLIM analysis tool suitable for high-speed and flexible time-domain FLIM ...
Chen, Yu   +3 more
core   +1 more source

Iterative algorithms with seminorm-induced oblique projections

open access: yesAbstract and Applied Analysis, 2003
A definition of oblique projections onto closed convex sets that use seminorms induced by diagonal matrices which may have zeros on the diagonal is introduced.
Yair Censor, Tommy Elfving
doaj   +1 more source

Generalized Reflexive and Generalized Antireflexive Solutions to a System of Matrix Equations

open access: yesJournal of Applied Mathematics, 2014
Two efficient iterative algorithms are presented to solve a system of matrix equations A1X1B1 + A2X2B2=E, C1X1D1 + C2X2D2=F over generalized reflexive and generalized antireflexive matrices.
Yong Lin, Qing-Wen Wang
doaj   +1 more source

Improved Iterative Inverse Matrix Approximation Algorithm for Zero Forcing Precoding in Large Antenna Arrays

open access: yesIEEE Access, 2022
Precoding algorithms are used in massive multiple-input multiple-output (mMIMO) communication systems to ensure effective signal transmission. The zero-forcing (ZF) is one of the most common linear precoding algorithms used in MIMO and mMIMO systems.
Aral Ertug Zorkun   +2 more
doaj   +1 more source

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