Results 31 to 40 of about 5,041 (182)

First passage and first hitting times of Lévy flights and Lévy walks

New Journal of Physics, 2019
For both Lévy flight and Lévy walk search processes we analyse the full distribution of first-passage and first-hitting (or first-arrival) times. These are, respectively, the times when the particle moves across a point at some given distance from its ...
Vladimir V Palyulin, George Blackburn, Michael A Lomholt, Nicholas W Watkins, Ralf Metzler, Rainer Klages, Aleksei V Chechkin   +6 more
doaj   +1 more source

Weak localization of light in superdiffusive random systems [PDF]

, 2011
L\'evy flights constitute a broad class of random walks that occur in many fields of research, from animal foraging in biology, to economy to geophysics.
Bertolotti, Jacopo, Burresi, Matteo, Radhalakshmi, Vivekananthan, Savo, Romolo, Vynck, Kevin, Wiersma, Diederik S.   +5 more
core   +3 more sources

Computational Methods for Tracking, Quantitative Assessment, and Visualization of C. elegans Locomotory Behavior. [PDF]

PLoS ONE, 2015
The nematode Caenorhabditis elegans provides a unique opportunity to interrogate the neural basis of behavior at single neuron resolution. In C. elegans, neural circuits that control behaviors can be formulated based on its complete neural connection map,
Kyle Moy, Weiyu Li, Huu Phuoc Tran, Valerie Simonis, Evan Story, Christopher Brandon, Jacob Furst, Daniela Raicu, Hongkyun Kim   +8 more
doaj   +1 more source

Enhancement of stability of metastable states in the presence of Lévy noise

SciPost Physics
The barrier-crossing event for superdiffusion characterized by symmetric Lévy flights is analyzed. Starting from the fractional Fokker-Planck equation, we derive an integro-differential equation along with the necessary conditions to calculate the mean ...
Alexander A. Dubkov, Claudio Guarcello, Bernardo Spagnolo
doaj   +1 more source

Continual decision‐making dynamics across biological organisms

Biological Reviews, EarlyView.
ABSTRACT Decision‐making is a central function of adaptive behaviour in biological agents. However, strategies for adaptive decision‐making can vary substantially across species. Here, we aim to extend the comparative scope of decision‐making analyses to phylogenetically diverse organisms.
Liberty Severs, Qiuran Wang
wiley   +1 more source

Brain-localized CD4 and CD8 T cells perform correlated random walks and not Levy walks [version 2; peer review: 1 approved, 2 approved with reservations]

F1000Research, 2023
Background. For survival of the organism, T cells must efficiently control pathogens invading different peripheral tissues. Whether or not such control is achieved by utilizing different movement strategies in different tissues remains poorly understood.
Barun Majumder, Vitaly V. Ganusov, Dhruv Patel, Raymond Lin   +3 more
doaj   +1 more source

The spread of non‐native species

Biological Reviews, EarlyView.
ABSTRACT The global redistribution of species through human agency is one of the defining ecological signatures of the Anthropocene, with biological invasions reshaping biodiversity patterns, ecosystem processes and services, and species interactions globally.
Phillip J. Haubrock, Ali Serhan Tarkan, Irene Martín‐Forés, Stelios Katsanevakis, Ronaldo Sousa, Ismael Soto, Andy J. Green, Antonín Kouba, Teun Everts, Victoria Dominguez Almela, Nadège Belouard, Cang Hui, Jamie Bojko, Victor Deklerck, Margaux Boeraeve, Franz Essl, J. Robert Britton   +16 more
wiley   +1 more source

Nature-inspired Cuckoo Search Algorithm for Side Lobe Suppression in a Symmetric Linear Antenna Array [PDF]

, 2012
In this paper, we proposed a newly modified cuckoo search (MCS) algorithm integrated with the Roulette wheel selection operator and the inertia weight controlling the search ability towards synthesizing symmetric linear array geometry with minimum side ...
Abdul Malek, M. F., Abdul Rani, K. N., Siew-Chin, N.   +2 more
core   +1 more source

Particle Dispersion on Rapidly Folding Random Hetero-Polymers

, 2003
We investigate the dynamics of a particle moving randomly along a disordered hetero-polymer subjected to rapid conformational changes which induce superdiffusive motion in chemical coordinates.
B. Alberts, D. Brockmann, G. M. Viswanathan, M. Levandowsky, O. G. Berg, P.-G. de Gennes, T. Geisel   +6 more
core   +1 more source

Sentience in cephalopod molluscs: an updated assessment

Biological Reviews, EarlyView.
ABSTRACT This article evaluates the evidence for sentience – the capacity to have feelings – in cephalopod molluscs: octopus, cuttlefish, squid, and nautilus. Our framework includes eight criteria, covering both whether the animal's nervous system could support sentience and whether their behaviour indicates sentience.
Alexandra K. Schnell, Heather Browning, Andrew Crump, Charlotte C. Burn, Jonathan Birch   +4 more
wiley   +1 more source