Results 61 to 70 of about 17,217 (243)

Unified Convergence Analysis of Chebyshev–Halley Methods for Multiple Polynomial Zeros

Mathematics, 2022
In this paper, we establish two local convergence theorems that provide initial conditions and error estimates to guarantee the Q-convergence of an extended version of Chebyshev–Halley family of iterative methods for multiple polynomial zeros due to ...
Stoil I. Ivanov
doaj   +1 more source

Chebyshev semi-iteration in Preconditioning [PDF]

, 2008
It is widely believed that Krylov subspace iterative methods are better than Chebyshev semi-iterative methods. When the solution of a linear system with a symmetric and positive definite coefficient matrix is required then the Conjugate Gradient method ...
Rees, Tyrone, Wathen, A. J.
core  

SpaBatch: Deep Learning‐Based Cross‐Slice Integration and 3D Spatial Domain Identification in Spatial Transcriptomics

Advanced Science, EarlyView.
SpaBatch is an end‐to‐end multi‐slice spatial transcriptomics data integration framework. It simultaneously performs embedding learning, spatial feature denoising and reconstruction, batch effect correction, and spatial domain optimization, effectively correcting batch effects and achieving accurate 3D spatial domain identification.
Jinyun Niu, Donghai Fang, Jinyu Chen, Yi Xiong, Juan Liu, Wenwen Min   +5 more
wiley   +1 more source

A Zero Placement Algorithm for Synthesis of Flat Top Beam Pattern With Low Sidelobe Level

IEEE Access, 2020
Flat top beam pattern synthesis is increasingly important for beamformer in high mobility scenarios due to the rapid change of Direction of Arrival (DOA). A Zero Placement for Flat Top (ZPFT) beam pattern synthesis algorithm is presented in this article.
Shaowei Dai, Minghui Li, Qammer H. Abbasi, Muhammad Ali Imran   +3 more
doaj   +1 more source

Torque‐Transmitting Architected Metamaterials for Flexible and Extendable Tubular Robotics

Advanced Intelligent Systems, EarlyView.
Soft and continuum robots commonly rely on fluid, tendon, or rod‐based power transmissions, to control robotic form and actuation. This study presents an architected structure, based on patterned straight‐line mechanisms, that enables simultaneous bending, extending, and torsionally rigid (BETR) transmission.
Sawyer Thomas, Aman Garg, Jeffery Lipton
wiley   +1 more source

Learning near‐optimal broadcasting intervals in decentralized multi‐agent systems using online least‐square policy iteration

IET Control Theory & Applications, 2021
Here, agents learn how often to exchange information with neighbours in cooperative multi‐agent systems (MASs) such that their linear quadratic regulator (LQR)‐like performance indices are minimized. The investigated LQR‐like cost functions capture trade‐
Ivana Palunko, Domagoj Tolić, Vicko Prkačin   +2 more
doaj   +1 more source

A multidomain spectral method for solving elliptic equations [PDF]

, 2002
We present a new solver for coupled nonlinear elliptic partial differential equations (PDEs). The solver is based on pseudo-spectral collocation with domain decomposition and can handle one- to three-dimensional problems.
Adams, Axelsson, Baden, Barrett, Boyd, Brandt, Canuto, Cook, Cook, Demaret, Deville, Funaro, Gervasio, Gottlieb, Grandclément, Harald P. Pfeiffer, Kidder, Ku, Lawrence E. Kidder, Macaraeg, Mark A. Scheel, Marronetti, Orszag, Orszag, Pfeiffer, Pinelli, Press, Saad, Saul A. Teukolsky, Smith, Swarztrauber, Swarztrauber, Swarztrauber   +32 more
core   +3 more sources

Random discrete probability measures based on a negative binomial process

Canadian Journal of Statistics, EarlyView.
Abstract A distinctive functional of the Poisson point process is the negative binomial process for which the increments are not independent but are independent conditional on an underlying gamma variable. Using a new point process representation for the negative binomial process, we generalize the Poisson–Kingman distribution and its corresponding ...
Sadegh Chegini, Mahmoud Zarepour
wiley   +1 more source

Study on fracture parameter calibration and failure characteristics of rock with hole and crack

Deep Underground Science and Engineering, EarlyView.
The SIF and plastic zone equations for a single hole and crack have been derived. The model's failure state leads to the identification of four types of cracks. The plastic zone increases with increased brittleness and decreased crack length. Abstract Cracks within the surrounding rock of roadways significantly affect their stability and failure ...
Shaochi Peng, Wensong Wang
wiley   +1 more source

An Exact Algorithm for Any-flavor Lattice QCD with Kogut-Susskind Fermion [PDF]

, 2002
We propose an exact simulation algorithm for lattice QCD with dynamical Kogut-Susskind fermion in which the N_f-flavor fermion operator is defined as the N_f/4-th root of the Kogut-Susskind (KS) fermion operator.
Aoki S., Fukugita M., Hashimoto S., Ishikawa K-I., Ishizuka N., Iwasaki Y., Kanaya K., Kaneko T., Kuramashi Y., Okawa M., Tsutsui N., Ukawa A., Yamada N., Yoshi´e T., 宇川 彰, 岩崎 洋一   +15 more
core   +2 more sources