Results 51 to 60 of about 5,073 (187)

An improved QPSO algorithm base on social learning and Lévy flights

open access: yesSystems Science & Control Engineering, 2018
The centre of the potential well of the quantum-behaviour particle swarm optimization (QPSO) is restricted to the super rectangle which is made up of the local optimal position and the global optimal position.
XiaoPing Yuan, Peng Jin, Guopeng Zhou
doaj   +1 more source

Cuckoo search via Lévy flights for the capacitated vehicle routing problem

open access: yesJournal of Industrial Engineering International, 2017
For this paper, we explored the implementation of the cuckoo search algorithm applied to the capacitated vehicle routing problem. The cuckoo search algorithm was implemented with Lévy flights with the 2-opt and double-bridge operations, and with 500 ...
Jon Henly Santillan   +3 more
doaj   +1 more source

Levy Flights in Inhomogeneous Media

open access: yes, 2003
We investigate the impact of external periodic potentials on superdiffusive random walks known as Levy flights and show that even strongly superdiffusive transport is substantially affected by the external field.
C. W. Gardiner   +6 more
core   +1 more source

Noncanonical Nucleotides in the Genome Around the Maternal‐Zygotic Transition

open access: yesJournal of Experimental Zoology Part B: Molecular and Developmental Evolution, EarlyView.
In this paper, Kazzazi et al. provide a comprehensive review of the dynamics of nonconventional nucleotides in the genome during early developmental stages, hypothesizing a potential role for these nucleotides in the activation of the zygotic genome. ABSTRACT From the very moment of fertilization and throughout development, the cells of animal embryos ...
Latifa Kazzazy   +7 more
wiley   +1 more source

Lévy movements and a slowly decaying memory allow efficient collective learning in groups of interacting foragers.

open access: yesPLoS Computational Biology, 2023
Many animal species benefit from spatial learning to adapt their foraging movements to the distribution of resources. Learning involves the collection, storage and retrieval of information, and depends on both the random search strategies employed and ...
Andrea Falcón-Cortés   +3 more
doaj   +1 more source

Normal and Anomalous Fluctuation Relations for Gaussian Stochastic Dynamics

open access: yes, 2012
We study transient work Fluctuation Relations (FRs) for Gaussian stochastic systems generating anomalous diffusion. For this purpose we use a Langevin approach by employing two different types of additive noise: (i) internal noise where the Fluctuation ...
Chechkin, Aleksei V.   +2 more
core   +1 more source

Matsumura‐Type Estimates and Global Solutions of a Fractional Wave Equation With Nonlocal Nonlinearity

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT The main results of this paper are the global existence and long time behavior of solutions of a fractional wave equation with a nonlocal nonlinearity. The techniques in this work rely on norm estimates of the solutions of εutt+ut+(−Δ)βu=0,u(0,x)=φ(x),ut(0,x)=ψ(x),$$ \varepsilon {u}_{tt}+{u}_t+{\left(-\Delta \right)}^{\beta }u=0,\kern1em u ...
Ibrahim Ahmad Suleman, Mokhtar Kirane
wiley   +1 more source

Cuckoo search via Levy flights applied to uncapacitated facility location problem

open access: yesJournal of Industrial Engineering International, 2017
Facility location problem (FLP) is a mathematical way to optimally locate facilities within a set of candidates to satisfy the requirements of a given set of clients.
Armacheska Mesa   +3 more
doaj   +1 more source

A Cuckoo Search Algorithm Using Improved Beta Distributing and Its Application in the Process of EDM

open access: yesCrystals, 2021
Lévy flights random walk is one of key parts in the cuckoo search (CS) algorithm to update individuals. The standard CS algorithm adopts the constant scale factor for this random walk. This paper proposed an improved beta distribution cuckoo search (IBCS)
Dili Shen   +5 more
doaj   +1 more source

Molecular free path distribution in rarefied gases [PDF]

open access: yes, 2011
We present the results of investigations into the distribution of molecular free paths in rarefied gases using molecular dynamics simulations. Our tests on a range of different gas densities and confinements (unbounded, single bounding wall and parallel ...
Dongari, Nishanth   +2 more
core   +1 more source

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