Results 21 to 30 of about 1,730 (224)

A Two-Dimensional Variant of Newton’s Method and a Three-Point Hermite Interpolation: Fourth- and Eighth-Order Optimal Iterative Schemes

Mathematics, 2023
A nonlinear equation f(x)=0 is mathematically transformed to a coupled system of quasi-linear equations in the two-dimensional space. Then, a linearized approximation renders a fractional iterative scheme xn+1=xn−f(xn)/[a+bf(xn)], which requires one ...
Chein-Shan Liu, Essam R. El-Zahar, Chih-Wen Chang   +2 more
doaj   +1 more source

Optimization of the Exponential Bounds on the Gaussian Q Function Using Interior Point Algorithm and Its Application in Communication Theory

IEEE Open Journal of the Communications Society, 2022
Owing to various applications in the field of wireless communication systems, in this paper, using vector-based interior-point algorithm, we propose a generic methodology which optimizes simple exponential based approximations of the Gaussian $Q ...
Aditya Powari, Dharmendra Sadhwani, Lalita Gupta, Ram Narayan Yadav   +3 more
doaj   +1 more source

Optimal Numerical Integration

Кібернетика та комп'ютерні технології, 2020
Introduction. In many applied problems, such as statistical data processing, digital filtering, computed tomography, pattern recognition, and many others, there is a need for numerical integration, moreover, with a given (often quite high) accuracy ...
V.K. Zadiraka, L.V. Luts, I.V. Shvidchenko   +2 more
doaj   +1 more source

Treeline Provides a Unified Strategy for Optimising Phylogenetic Trees Under Alternative Criteria. [PDF]

Mol Ecol Resour
ABSTRACT The choice of optimality criterion is a key consideration in phylogenetic studies. Recent work challenges the notion that more computationally demanding optimisation objectives result in better phylogenetic trees. This finding underscores the importance of comparing trees across optimisation objectives in addition to different models of ...
Wright ES.
europepmc   +2 more sources

Low Complexity Golden Code Analytical and Deep Learning-Based Sphere-Decoders for High-Density M-QAM

IEEE Access, 2022
In this paper, we develop low complexity Golden code sphere-decoding (SD) algorithms for high-density M-ary quadrature amplitude modulation (M-QAM). We define the high-density M-QAM as having modulation orders ( $M$ ) of at least 64, i.e.
Bhekisizwe Mthethwa, Hongjun Xu
doaj   +1 more source

Comparison of optimal quadrature formulas

Numerische Mathematik, 1989
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bojanov, Borislav, Huang, Daren
openaire   +1 more source

Random search algorithm for solving the nonlinear Fredholm integral equations of the second kind. [PDF]

PLoS ONE, 2014
In this paper, a randomized numerical approach is used to obtain approximate solutions for a class of nonlinear Fredholm integral equations of the second kind.
Zhimin Hong, Zaizai Yan, Jiao Yan
doaj   +1 more source

A Multilevel Heterogeneous ADMM Algorithm for Elliptic Optimal Control Problems with L¹-Control Cost

Mathematics, 2023
In this paper, elliptic optimal control problems with L1-control cost and box constraints on the control are considered. To numerically solve the optimal control problems, we use the First optimize, then discretize approach.
Xiaotong Chen, Xiaoliang Song, Zixuan Chen, Lijun Xu   +3 more
doaj   +1 more source

Error Bounds for Optimal Definite Quadrature Formulae

Journal of Approximation Theory, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kohler, P., Nikolov, G.
openaire   +1 more source

Optimal Biasing of a Self-Homodyne Optically Coherent RF Receiver

IEEE Photonics Journal, 2010
We present a technique that achieves the most efficient use of the linear dynamic range of available photodiodes without sacrificing the linearity of the radio-frequency (RF) digital receiver and photonic link based on optical phase modulation and ...
S. R. O'Connor, M. L. Dennis, T. R. Clark   +2 more
doaj   +1 more source