Results 31 to 40 of about 23,334,857 (297)

A Faster and More Accurate Algorithm for Calculating Population Genetics Statistics Requiring Sums of Stirling Numbers of the First Kind

open access: yesG3: Genes, Genomes, Genetics, 2020
Ewen’s sampling formula is a foundational theoretical result that connects probability and number theory with molecular genetics and molecular evolution; it was the analytical result required for testing the neutral theory of evolution, and has since ...
Swaine L. Chen, Nico M. Temme
doaj   +1 more source

Introduction to the parallelization of algorithms and programs [PDF]

open access: yesКомпьютерные исследования и моделирование, 2010
Difference of software development for parallel computing technology from sequential programming is dicussed. Arguements for introduction of new phases into technology of software engineering are given.
Vladimir Efimovich Karpov
doaj   +1 more source

A third order correction to the Helmholtz equation

open access: yesMathematical Modelling and Analysis, 2005
In this work we derive a third order correction to the classical Helmholtz equation. Starting from non‐linear Euler equations and using asymptotical analysis we get a decoupled system of linear, Helmholtz type equations, which are written in terms of the
J. Jegorovs, J. Mohring
doaj   +1 more source

Asymptotic analysis for elliptic equations with small perturbations on domains in high-contrast medium

open access: yes, 2020
We provide a comprehensive study on the asymptotic solutions of an interface problem corresponding to an elliptic partial differential equation with Dirichlet boundary condition and transmission condition, subject to the small geometric perturbation and ...
Chen, J, Zhou, X, Lin, L, Zhang, Z
core   +1 more source

A uniform controllability result for the Keller-Segel system [PDF]

open access: yes, 2015
In this paper we study the controllability of the Keller-Segel system approximating its parabolic-elliptic version. We show that this parabolic system is locally uniform controllable around a constant solution of the parabolic-elliptic system when the ...
Chaves-Silva F.W.   +3 more
core   +1 more source

Asymptotic expansion of stationary distribution for reflected Brownian motion in the quarter plane via analytic approach

open access: yesStochastic Systems, 2017
Brownian motion in R2+ with covariance matrix Σ and drift μ in the interior and reflection matrix R from the axes is considered. The asymptotic expansion of the stationary distribution density along all paths in R2+ is found and its main term is ...
Sandro Franceschi, Irina Kourkova
doaj   +1 more source

Asymptotic Analysis of the MMРР|M|1 Retrial Queue with Negative Calls under the Heavy Load Condition [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2020
In the paper, a single-server retrial queueing system with MMPP arrivals and an exponential law of the service time is studied. Unserviced calls go to an orbit and stay there during random time distributed exponentially, they access to the server ...
Fedorova, Ekaterina A.   +2 more
doaj   +1 more source

Asymptotic behaviours of stochastic differential delay equations [PDF]

open access: yes, 2005
Most of the existing results on stochastic stability use a single Lyapunov function, but we shall instead use multiple Lyapunov functions in this paper.
Shen, Yi   +3 more
core   +3 more sources

On the formation of fold-type oscillation marks in the continuous casting of steel [PDF]

open access: yesRoyal Society Open Science, 2017
Asymptotic methods are employed to revisit an earlier model for oscillation-mark formation in the continuous casting of steel. A systematic non-dimensionalization of the governing equations, which was not carried out previously, leads to a model with 12 ...
M. Vynnycky   +5 more
doaj   +1 more source

Nonlinear Dynamic Response of Ropeway Roller Batteries via an Asymptotic Approach

open access: yesApplied Sciences, 2021
The nonlinear dynamic features of compression roller batteries were investigated together with their nonlinear response to primary resonance excitation and to internal interactions between modes.
Andrea Arena
doaj   +1 more source

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