Results 61 to 70 of about 1,120,364 (167)

Stochastic embedding DFT: Theory and application to p-nitroaniline in water. [PDF]

, 2019
Over this past decade, we combined the idea of stochastic resolution of identity with a variety of electronic structure methods. In our stochastic Kohn-Sham density functional theory (DFT) method, the density is an average over multiple stochastic ...
Baer, Roi, Chen, Ming, Li, Wenfei, Neuhauser, Daniel, Rabani, Eran   +4 more
core  

f-Majorization with Applications to Stochastic Comparison of Extreme Order Statistics

Journal of Statistical Theory and Applications (JSTA), 2018
In this paper, we use a new partial order, called f-majorization order. The new order includes as special cases the majorization, the reciprocal majorization and the p-larger orders.
Esmaeil Bashkar, Hamzeh Torabi, Ali Dolati, Félix Belzunce   +3 more
doaj   +1 more source

Directional Dependence Orders of Random Vectors

Mathematics
In this paper, we define a multivariate order based on the concept of orthant directional dependence and study some of its properties. The relationships with other dependence orders given in the literature are also studied.
Enrique de Amo, María del Rosario Rodríguez-Griñolo, Manuel Úbeda-Flores   +2 more
doaj   +1 more source

Stochastic Bifurcations of a Fractional-Order Vibro-Impact System Driven by Additive and Multiplicative Gaussian White Noises

Complexity, 2019
Stochastic fractional-order systems or stochastic vibro-impact systems can present rich dynamical behaviors, and lots of studies dealing with stochastic fractional-order systems or stochastic vibro-impact systems are available now, while the discussion ...
Yong-Ge Yang, Ya-Hui Sun, Wei Xu
doaj   +1 more source

Stochastic and Higher-Order Effects on Exploding Pulses

Applied Sciences, 2017
The influence of additive noise, multiplicative noise, and higher-order effects on exploding solitons in the framework of the prototype complex cubic-quintic Ginzburg-Landau equation is studied.
Orazio Descalzi, Carlos Cartes
doaj   +1 more source

Multivariate Discrete First Order Stochastic Dominance [PDF]

This paper characterizes the principle of first order stochastic dominance in a multivariate discrete setting. We show that a distribution f first order stochastic dominates distribution g if and only if f can be obtained from g by iteratively shifting ...
Finn Tarp, Lars Peter Østerdal
core  

Stochastic ordering of discrete multivariate distributions. Algorithm in C++ with applications in the comparison of number of claims and extremes order statistics

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica
In this article we present a stochastic ordering verification algorithm between multivariate discrete distributions implemented in the C++ programming language.
Catana Luigi-Ionut
doaj   +1 more source

Computing Probabilities of Finding Extremes in a Random Set

Mathematics
This study examines the occurrence of extreme points in random samples of size n obtained by mapping uniformly distributed random variables through a function into a multidimensional space.
Gheorghiţă Zbăganu, Anişoara Maria Răducan, Marius Rădulescu   +2 more
doaj   +1 more source

RSD: An R package to calculate stochastic dominance

SoftwareX
Stochastic dominance is a classical method for comparing two random variables using their probability distribution functions. As for all stochastic orders, stochastic dominance does not always establish an order between the random variables, and almost ...
Shayan Tohidi, Sigurdur Olafsson
doaj   +1 more source

Stability-preserving model order reduction for linear stochastic Galerkin systems

Journal of Mathematics in Industry, 2019
Mathematical modeling often yields linear dynamical systems in science and engineering. We change physical parameters of the system into random variables to perform an uncertainty quantification.
Roland Pulch
doaj   +1 more source