Results 31 to 40 of about 2,636 (156)

Sequential Outlier Detection in Nonstationary Time Series

open access: yesJournal of Time Series Analysis, EarlyView.
ABSTRACT A novel method for sequential outlier detection in nonstationary time series is proposed. The method tests the null hypothesis of “no outlier” at each time point, addressing the multiple testing problem by bounding the error probability of successive tests, using extreme‐value theory. The asymptotic properties of the test statistic are studied
Florian Heinrichs   +2 more
wiley   +1 more source

Numerical analysis of a non-clamped dynamic thermoviscoelastic contact problem

open access: yes, 2019
In this work we analyze a non-clamped dynamic viscoelastic contact problem involving thermal effect. The friction law is described by a nonmonotone relation between the tangential stress and the tangential velocity.
Bartman, Piotr   +3 more
core   +1 more source

Instability of Nonmonotone Magnetic Equilibria of the Relativistic Vlasov-Maxwell System [PDF]

open access: yes, 2011
We consider the question of linear instability of an equilibrium of the Relativistic Vlasov-Maxwell (RVM) System that has a strong magnetic field. Standard instability results deal with systems where there are fewer particles with higher energies.
Ben-Artzi, Jonathan
core   +1 more source

Asymptotic Profiles and Disease Prevalence at the Steady State for an SIS Patch Model

open access: yesStudies in Applied Mathematics, Volume 156, Issue 1, January 2026.
ABSTRACT Infected individuals often display mobility patterns that differ significantly from those of healthy individuals—traveling less frequently, covering shorter distances, visiting fewer destinations, and altering their timing and modes of movement.
Daozhou Gao, Xin Li
wiley   +1 more source

Accelerated gradient methods for total-variation-based CT image reconstruction [PDF]

open access: yes, 2011
Total-variation (TV)-based Computed Tomography (CT) image reconstruction has shown experimentally to be capable of producing accurate reconstructions from sparse-view data.
Hansen, Per Christian   +5 more
core   +2 more sources

Evolutionary Oseen model for generalized Newtonian fluid with Multivalued Nonmonotone Friction Law [PDF]

open access: yes, 2018
The paper deals with the non-stationary Oseen system of equations for the generalized Newtonian incompressible fluid with multivalued and nonmonotone frictional slip boundary conditions.
Dudek, Sylwia, Migórski, Stanisław
core   +1 more source

Belief Change in Nonmonotonic Multi-Context Systems [PDF]

open access: yes, 2013
Brewka and Eiter's nonmonotonic multi-context system is an elegant knowledge representation framework to model heterogeneous and nonmonotonic multiple contexts. Belief change is a central problem in knowledge representation and reasoning. In this paper we follow the classical AGM approach to investigate belief change in multi-context systems ...
Yisong Wang, Zhiqiang Zhuang, Kewen Wang
openaire   +1 more source

Floer theory for the variation operator of an isolated singularity

open access: yesJournal of Topology, Volume 18, Issue 4, December 2025.
Abstract The variation operator in singularity theory maps relative homology cycles to compact cycles in the Milnor fiber using the monodromy. We construct its symplectic analog for an isolated singularity. We define the monodromy Lagrangian Floer cohomology, which provides categorifications of the standard theorems on the variation operator and the ...
Hanwool Bae   +3 more
wiley   +1 more source

Estimation of System Reliability Based on Inverted Exponentiated Pareto Distribution Under a Progressively First‐Failure Censored Scheme With Application

open access: yesQuality and Reliability Engineering International, Volume 41, Issue 7, Page 3197-3219, November 2025.
ABSTRACT This article explores and derives the estimation of the multicomponent stress–strength (MSS) reliability parameter, assuming that the samples are coming from the inverted exponentiated Pareto distribution using a progressively first‐failure censored scheme. To estimate the MSS reliability, both classical and Bayesian approaches are adopted. In
Kapil Kumar   +2 more
wiley   +1 more source

Minimal wave speed on a diffusive SIR model with nonlocal delays

open access: yesElectronic Journal of Differential Equations, 2018
This article concerns the minimal wave speed of a diffusive SIR model with nonlocal delays, in which the dynamics of disease has no positive outbreak threshold. By constructing a pair of super and sub-solutions, we establish the existence of traveling
Wei-Jian Bo, Guo Lin, Ben Xiong
doaj  

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