Results 31 to 40 of about 2,123,789 (292)

Computational fluid dynamics-based hull form optimization using approximation method

open access: yesEngineering Applications of Computational Fluid Mechanics, 2018
With the rapid development of the computational technology, computational fluid dynamics (CFD) tools have been widely used to evaluate the ship hydrodynamic performances in the hull forms optimization.
Shenglong Zhang   +4 more
doaj   +1 more source

A Family of Arbitrary High-Order Iterative Methods for Approximating Inverse and the Moore–Penrose Inverse

open access: yesCommunications in Advanced Mathematical Sciences, 2020
In this work, a family of iterative algorithms for approximating the inverse of a square matrix and the Moore-Penrose inverse of a non-square one is proposed.
Esmaeil Kokabifar
doaj   +1 more source

Electroencephalogram Denoising Method Combining Improved CEEMD and Approximate Entropy [PDF]

open access: yesJisuanji gongcheng, 2017
Aiming at the problem of modal selection bias in Complete Ensemble Empirical Mode Decomposition(CEEMD),this paper proposes a new Electroencephalogram(EEG) signal denoising method by combining improved CEEMD(ICEEMD).First,the EEG signal is decomposed to ...
ZHANG Huan,LIU Yan,TONG Baotong,ZHAO Lingxiao,YANG Yingxue,WANG Yuping,DAI Yakang
doaj   +1 more source

An Approximate Large $N$ Method for Lattice Chiral Models

open access: yes, 1996
An approximation is used that permits one to explicitly solve the two-point Schwinger-Dyson equations of the U(N) lattice chiral models. The approximate solution correctly predicts a phase transition for dimensions $d$ greater than two.
A. A. Migdal   +19 more
core   +2 more sources

Integral method of solving heat-conduction problems with the second-kind boundary condition. 3. Pulsed laser heating

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2019
Exact and approximate solutions to the non-stationary problem on the heat conduction in a semi-bounded body exposed to a pulsed laser radiation flow have been obtained.
V. A. Kot
doaj   +1 more source

Convergence study and optimal weight functions of an explicit particle method for the incompressible Navier--Stokes equations [PDF]

open access: yes, 2019
To increase the reliability of simulations by particle methods for incompressible viscous flow problems, convergence studies and improvements of accuracy are considered for a fully explicit particle method for incompressible Navier--Stokes equations. The
Imoto, Y., Nishiura, D., Tsuzuki, S.
core   +2 more sources

The Method of Chernoff Approximation [PDF]

open access: yes, 2020
This survey describes the method of approximation of operator semigroups, based on the Chernoff theorem. We outline recent results in this domain as well as clarify relations between constructed approximations, stochastic processes, numerical schemes for PDEs and SDEs, path integrals.
openaire   +2 more sources

Approximate solution to the fractional Lane-Emden type equations

open access: yes, 2017
In this paper, approximate solutions for a class of fractional Lane - Emden type equations based on the series expansion method are presented. Various examples are introduced and discussed.
Abdel-Salam, Emad A-B., Nouh, M. I.
core   +1 more source

A simple method for evaluating low-energy electron-molecule scattering cross sections using discrete basis functions [PDF]

open access: yes, 1975
We present a simple, approximate method for calculating low-energy electron-molecule scattering cross sections using only the results of a basis set diagonalization of the molecular Hamiltonian.
McCurdy, C. W., Jr.   +2 more
core   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

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