Results 11 to 20 of about 5,041 (182)

Moth Search: Variants, Hybrids, and Applications

Mathematics, 2022
Moth search (MS) is a nature-inspired metaheuristic optimization algorithm based on the most representative characteristics of moths, Lévy flights and phototaxis.
Juan Li, Yuan-Hua Yang, Qing An, Hong Lei, Qian Deng, Gai-Ge Wang   +5 more
doaj   +1 more source

IL‐31 levels correlate with pruritus in patients with cholestatic and metabolic liver diseases and is farnesoid X receptor responsive in NASH

Hepatology, EarlyView., 2022
IL‐31 levels correlate with pruritus in patients with cholestatic and metabolic liver diseases Abstract Background and Aims Pruritus is associated with multiple liver diseases, particularly those with cholestasis, but the mechanism remains incompletely understood.
Jun Xu, Ya Wang, Mina Khoshdeli, Matt Peach, Jen‐Chieh Chuang, Julie Lin, Wen‐Wei Tsai, Sangeetha Mahadevan, Wesley Minto, Lauri Diehl, Ruchi Gupta, Michael Trauner, Keyur Patel, Mazen Noureddin, Kris V. Kowdley, Aliya Gulamhusein, Christopher L. Bowlus, Ryan S. Huss, Robert P. Myers, Chuhan Chung, Andrew N. Billin   +20 more
wiley   +1 more source

Jumping to Conclusion? A Lévy Flight Model of Decision Making [PDF]

Tutorials in Quantitative Methods for Psychology, 2020
The diffusion model is one of the most prominent response time models in cognitive psychology. The model describes evidence accumulation as a stochastic process that runs between two boundaries until a threshold is hit, and a decision is made.
Wieschen, Eva Marie, Voss, Andreas, Radev, Stefan   +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

Asymmetric Lévy Flights Are More Efficient in Random Search

Fractal and Fractional, 2022
We study the first-arrival (first-hitting) dynamics and efficiency of a one-dimensional random search model performing asymmetric Lévy flights by leveraging the Fokker–Planck equation with a δ-sink and an asymmetric space-fractional derivative operator ...
Amin Padash, Trifce Sandev, Holger Kantz, Ralf Metzler, Aleksei V. Chechkin   +4 more
doaj   +1 more source

Joint power control and user grouping mechanism for efficient uplink non‐orthogonal multiple access‐based 5G communication: Utilising the Lèvy‐flight firefly algorithm

IET Networks, EarlyView., 2023
We utilise a metaheuristic optimisation method, inspired by nature, called the Lévy‐flight firefly algorithm (LFA), to tackle the power regulation and user grouping in the NOMA systems. Abstract The non‐orthogonal multiple access strategies have shown promise to boost fifth generation and sixth generation wireless networks' spectral efficiency and ...
Zaid Albataineh, Khaled F. Hayajneh, Haythem Bany Salameh, Raed Al Athamneh, Yaser Jararweh   +4 more
wiley   +1 more source

Cauchy problem for nonlocal diffusion equations modelling Lévy flights

Electronic Journal of Qualitative Theory of Differential Equations, 2022
In the present paper, we study the time-space fractional diffusion equation involving the Caputo differential operator and the fractional Laplacian. This equation describes the Lévy flight with the Brownian motion component and the drift component. First,
Chung-Sik Sin
doaj   +1 more source

Multi-Robot Searching Algorithm Using Levy Flight and Artificial Potential Field

8th IEEE International Workshop on Safety, Security, and Rescue Robotics, SSRR-2010, 2010
An efficient search algorithm is very crucial in robotic area, especially for exploration missions, where the target availability is unknown and the condition of the environment is highly unpredictable. In a very large environment, it is not sufficient to scan an area or volume by a single robot, multiple robots should be involved to perform the ...
Sutantyo D.K., Kernbach S., Levi P., Nepomnyashchikh V.A.   +3 more
openaire   +2 more sources

Lévy flights in human behavior and cognition [PDF]

, 2013
Lévy flights represent the best strategy to randomly search for a target in an unknown environment, and have been widely observed in many animal species. Here, we inspect and discuss recent results concerning human behavior and cognition.
Andrea Baronchelli, Baronchelli, Baronchelli, Bertrand, Brockmann, Brown, de Jager, Edwards, Ehrlich, Filippo Radicchi, Gonzalez, Humphries, Humphries, Lomholt, Loreto, Nowak, Ornes, Radicchi, Radicchi, Ramos-Fernández, Rhee, Rhodes, Riascos, Russell, Shlesinger, Sims, Sorribes, Viswanathan, Viswanathan, Viswanathan, Yellen   +30 more
core   +2 more sources

Lévy Walks as a Universal Mechanism of Turbulence Nonlocality

Foundations, 2023
The nonlocality (superdiffusion) of turbulence is expressed in the empiric Richardson t3 scaling law for the mean square of the mutual separation of a pair of particles in a fluid or gaseous medium. The development of the theory of nonlocality of various
Alexander B. Kukushkin, Andrei A. Kulichenko   +1 more
doaj   +1 more source