Results 41 to 50 of about 1,463 (179)

Front Propagation of Exponentially Truncated Fractional-Order Epidemics

Fractal and Fractional, 2022
The existence of landscape constraints in the home range of living organisms that adopt Lévy-flight movement patterns, prevents them from making arbitrarily large displacements.
Afshin Farhadi, Emmanuel Hanert
doaj   +1 more source

Noncanonical Nucleotides in the Genome Around the Maternal‐Zygotic Transition

Journal 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, Dávid Mező, Kinga K. Nagy, Viktória Perey‐Simon, Judit Tóth, Angéla Békési, Beáta Vértessy, Máté Varga   +7 more
wiley   +1 more source

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

PLoS 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, Denis Boyer, Maximino Aldana, Gabriel Ramos-Fernández   +3 more
doaj   +1 more source

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

Crystals, 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, Wuyi Ming, Xinggui Ren, Zhuobin Xie, Yong Zhang, Xuewen Liu   +5 more
doaj   +1 more source

Are DSM‐5 and ICD‐11 posttraumatic stress disorder measures assessing the same construct? Evidence from a Rasch‐based analysis

Journal of Traumatic Stress, EarlyView.
Abstract This study examined whether DSM‐5 and ICD‐11 self‐report operationalizations of posttraumatic stress disorder (PTSD) are psychometrically equivalent. Using Rasch modeling, we compared the psychometric properties and convergent validity of the PTSD Checklist for DSM‐5 (PCL‐5) and the International Trauma Questionnaire (ITQ) in a sample of 483 ...
Emre Han Alpay
wiley   +1 more source

Cuckoo search via Levy flights applied to uncapacitated facility location problem

Journal 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, Kris Castromayor, Cinmayii Garillos-Manliguez, Vicente Calag   +3 more
doaj   +1 more source

Population recovery of an endangered macaw enhances long‐distance seed dispersal via stomatochory

Oikos, EarlyView.
Seed dispersal by large, mobile vertebrates plays a key role in shaping plant spatial dynamics and community structure. However, how variation in animal population size influences the magnitude and spatial scale of seed dispersal remains poorly understood.
Giulyana A. Benedicto, Erica C. Pacífico, Mathias M. Pires   +2 more
wiley   +1 more source

IntLevPy: A Python library to classify and model intermittent and Lévy processes

SoftwareX
IntLevPy provides a comprehensive description of the IntLevPy Package, a Python library designed for simulating and analyzing intermittent and Lévy processes. The package includes functionalities such as full parameter estimation and fitting optimization
Shailendra Bhandari, Pedro Lencastre, Sergey Denisov, Yurii S. Bystryk, Pedro G. Lind   +4 more
doaj   +1 more source

Order in spontaneous behavior. [PDF]

PLoS ONE, 2007
Brains are usually described as input/output systems: they transform sensory input into motor output. However, the motor output of brains (behavior) is notoriously variable, even under identical sensory conditions. The question of whether this behavioral
Alexander Maye, Chih-Hao Hsieh, George Sugihara, Björn Brembs   +3 more
doaj   +1 more source

Area‐restricted search under realistic constraints

Oikos, EarlyView.
Abstract Area‐restricted search (ARS) is one of the most influential and widely used concepts in foraging theory, capturing a simple rule by which animals intensify local search following a resource encounter. Because ARS performs well in many spatially structured environments, it serves as a basic model for interpreting movement patterns across taxa ...
Inon Scharf, Arik Dorfman
wiley   +1 more source