نتایج جستجو برای: si3

تعداد نتایج: 177  

Journal: :Applied Mathematics Letters 2021

We study Lp-strong convergence for coupled stochastic differential equations (SDEs) driven by Lévy noise with non-Lipschitz coefficients. Utilizing Khasminkii’s time discretization technique, the Kunita’s first inequality and Bihari’s inequality, we show that slow solution processes converge strongly in Lp to of corresponding averaged equation.

Journal: :Journal of Nuclear Materials 2021

Uranium silicide (U3Si2) is a concept explored as potential alternative to UO2 fuel used in light water reactors (LWRs) since it may improve accident tolerance and economics due its higher thermal conductivity increased uranium density. U3Si2 has been previously research the form of dispersion which operates at lower temperatures than commercial LWRs. The reactor data illustrated that significa...

Journal: :Automatica 2021

The moving average (MA)-type scheme, also known as the smoothing method, has been well established within multivariate statistical process monitoring (MSPM) framework since 1990s. However, its theoretical basis is still limited to independent data, and optimality of equally or exponentially weighted scheme remains unproven. This paper aims weaken independence assumption in existing MA then exte...

Journal: :Indagationes Mathematicae 2023

We introduce a queueing system that alternates between two modes, so-called working mode and vacation mode. During the runs as an MX/G/1 queue. Once number of customers in drops to zero begins. general (a service might be included) which is different from one The period ends accordance with given stopping rule, then random are transferred For this model we show distributed sum independent varia...

Journal: :Annals of Physics 2021

We consider the f(R,T) theory of gravity, in which gravitational Lagrangian is given by an arbitrary function Ricci scalar and trace energy–momentum tensor, to study static spherically symmetric wormhole geometries sustained matter sources with isotropic pressure. According restrictions on geometries, we carefully adopt different strategies construct solutions properties characteristics wormhol...

Journal: :Annals of Physics 2021

We consider the f(R,T) theory of gravity, in which gravitational Lagrangian is given by an arbitrary function Ricci scalar and trace energy–momentum tensor, to study static spherically symmetric wormhole geometries sustained matter sources with isotropic pressure. According restrictions on geometries, we carefully adopt different strategies construct solutions properties characteristics wormhol...

Journal: :Journal of Computational and Applied Mathematics 2021

Sparse logistic regression, as an effective tool of classification, has been developed tremendously in recent two decades, from its origination the $\ell_1$-regularized version to sparsity constrained models. This paper is carried out on regression by Newton method. We begin with establishing first-order optimality condition associated a $\tau$-stationary point. point can be equivalently interp...

Journal: :Astroparticle Physics 2021

The standard Λ Cold Dark Matter cosmological model provides a wonderful fit to current data, but few statistically significant tensions and anomalies were found in the latest data analyses. While these could be due presence of systematic errors experiments, they also indicate need for new physics beyond model. In this Letter Interest we focus on tension between Planck weak lensing measurements ...

Journal: :Indagationes Mathematicae 2023

We introduce a queueing system that alternates between two modes, so-called working mode and vacation mode. During the runs as an MX/G/1 queue. Once number of customers in drops to zero begins. general (a service might be included) which is different from one The period ends accordance with given stopping rule, then random are transferred For this model we show distributed sum independent varia...

Journal: :Journal of Non-crystalline Solids 2021

Study of condensed matter in certain extreme conditions allows one to better understand the mechanisms microscopic structural transformations and develop materials with completely new mechanical properties. In present work, we study structure crystallization kinetics bulk metallic glass (BMG) Ni62Nb38. We show that this BMG is rapidly crystallized under combined effect shear deformation ultrahi...

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