Results 41 to 50 of about 98,123 (253)

The Weierstrassian movement patterns of snails [PDF]

open access: yesRoyal Society Open Science, 2017
Weierstrassian Lévy walks are the archetypical form of random walk that do not satisfy the central limit theorem and are instead characterized by scale invariance.
Andy Reynolds   +3 more
doaj   +1 more source

Improved active disturbance rejection control with the optimization algorithm for the leg joint control of a hydraulic quadruped robot

open access: yesMeasurement + Control, 2023
To enhance the joint control performance in hydraulic quadruped robots, active disturbance rejection control was used in the leg joint controller design of a hydraulic quadruped robot in combination with the self-growing lévy-flight salp swarm algorithm ...
Xuan Shao   +3 more
doaj   +1 more source

Evaluation of Metaheuristic-Based Methods for Optimization of Truss Structures via Various Algorithms and Lèvy Flight Modification

open access: yesBuildings, 2021
Truss structures are one of the major civil engineering members studied in the optimization research area. In this area, various optimization applications such as topology, size, cost, weight, material usage, etc., can be conducted for different truss ...
Gebrail Bekdaş   +2 more
doaj   +1 more source

Characterizing Human Mobility Patterns in a Large Street Network

open access: yes, 2009
Previous studies demonstrated empirically that human mobility exhibits Levy flight behaviour. However, our knowledge of the mechanisms governing this Levy flight behaviour remains limited.
B. Jiang   +5 more
core   +1 more source

Levy flights are not evolved behavior

open access: yesNature Precedings, 2011
AbstractTracks of moving animals have many short moves interspersed with longer moves, and frequencies of all moves together often indicate Levy flights (a type of power law)^1^. The Levy flight foraging hypothesis suggests that, 'since Levy flights and walks can optimize search efficiencies, therefore natural selection should have led to adaptations ...
Jay Willis, Lucas Merckelbach
openaire   +2 more sources

Energy Efficient Random Search in Euclidean Space using Lévy Flight [PDF]

open access: yesE3S Web of Conferences
Agents operating in unknown environments commonly rely on fundamental random search strategies to locate targets without prior knowledge of their surroundings.
Narwandaru Nara   +2 more
doaj   +1 more source

Cuckoo Search via Levy Flights [PDF]

open access: yes, 2009
In this paper, we intend to formulate a new metaheuristic algorithm, called Cuckoo Search (CS), for solving optimization problems. This algorithm is based on the obligate brood parasitic behaviour of some cuckoo species in combination with the Levy ...
Deb, Suash, Yang, Xin-She
core   +1 more source

The Lévy Flight of Cities: Analyzing Social-Economical Trajectories with Auto-Embedding

open access: yesDiscrete Dynamics in Nature and Society, 2022
Lévy flights are useful in stochastic measurement, such as biology, human mobility, and financial mathematics, where trajectories contain many short flights and some long flights, and the step-lengths follow a power-law distribution. For cities inhabited
Linfang Tian   +4 more
doaj   +1 more source

New Insight into the Fluctuations of the Moving Vortex Lattice: Non-Gaussian Noise and Levy Flights [PDF]

open access: yes, 2006
We report measurements and analysis of the voltage noise due the to vortex motion, performed in superconducting Niobium micro-bridges. Noise in such small systems exhibits important changes from the behavior commonly reported in macroscopic samples.
Domenges, B.   +5 more
core   +2 more sources

Arbitrary Truncated Levy Flight: Asymmetrical Truncation and High-Order Correlations

open access: yes, 2012
The generalized correlation approach, which has been successfully used in statistical radio physics to describe non-Gaussian random processes, is proposed to describe stochastic financial processes.
Altman   +27 more
core   +1 more source

Home - About - Disclaimer - Privacy