Results 41 to 50 of about 97,711 (239)

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

Measurement + 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, Yuqi Fan, Junpeng Shao, Guitao Sun   +3 more
doaj   +1 more source

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

E3S 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, Vincent Jordan, Soelistijanto Bambang   +2 more
doaj   +1 more source

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

Discrete 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, Kai Zhao, Jiaming Yin, Huy Vo, Weixiong Rao   +4 more
doaj   +1 more source

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

, 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, Bouchaud, Chechkin, Cont, Dacorogna, Dmitry V. Vinogradov, Fama, Feller, Gardiner, Gelfand, Kendall, Koponen, Korn, Mantegna, Mantegna, Mazo, McCauley, Mundelbrot, Nayfeh, Podobnik, Podobnik, Rudnick, Shiryaev, Stratonovich, Van Kampen, Vinogradov, Zmijewski, Zolotarev   +27 more
core   +1 more source

Reconfiguration Strategy for DC Distribution Network Fault Recovery Based on Hybrid Particle Swarm Optimization

Energies, 2021
DC distribution network faults seriously affect the reliability of system power supply. Therefore, this paper proposes a fault recovery reconfiguration strategy for DC distribution networks, based on hybrid particle swarm optimization.
Minsheng Yang, Jianqi Li, Jianying Li, Xiaofang Yuan, Jiazhu Xu   +4 more
doaj   +1 more source

Characterizing Human Mobility Patterns in a Large Street Network

, 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, Bin Jiang, I. Rhee, Junjun Yin, R. C. Thomson, Sijian Zhao   +5 more
core   +1 more source

Scintillations and Levy Flights through the Interstellar Medium [PDF]

The Astrophysical Journal, 2003
Temporal broadening of pulsar signals results from electron density fluctuations in the interstellar medium that cause the radiation to travel along paths of different lengths. The Gaussian theory of fluctuations predicts that the pulse temporal broadening should scale with the wavelength as lambda^4, and with the dispersion measure (corresponding to ...
Boldyrev, Stanislav, Gwinn, Carl
openaire   +2 more sources

Fractional Diffusion Equation for a Power-Law-Truncated Levy Process

, 2003
Truncated Levy flights are stochastic processes which display a crossover from a heavy-tailed Levy behavior to a faster decaying probability distribution function (pdf).
A.V Chechkin, Chechkin, Chechkin, Chechkin, Clark, Dubrulle, I.M Sokolov, J Klafter, Jha, Koponen, Levandowsky, Mantegna, Mantegna, Metzler, Metzler, Shlesinger, Shlesinger, Shlesinger, Sokolov, Sokolov, Sokolov, Stanley, Viswanathan, Zumofen   +23 more
core   +1 more source

LFGCN: Levitating over Graphs with Levy Flights [PDF]

2020 IEEE International Conference on Data Mining (ICDM), 2020
To Appear in the 2020 IEEE International Conference on Data Mining (ICDM)
Chen, Yuzhou, Gel, Yulia, Avrachenkov, Konstantin   +2 more
openaire   +3 more sources

Levy-flight spreading of epidemic processes leading to percolating clusters

, 1998
We consider two stochastic processes, the Gribov process and the general epidemic process, that describe the spreading of an infectious disease. In contrast to the usually assumed case of short-range infections that lead, at the critical point, to ...
Hilhorst, H. J., Janssen, H. K., Oerding, K., van Wijland, F.   +3 more
core   +1 more source