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Comparison Results for Branching Processes in Random Environments [PDF]

open access: yesJournal of Applied Probability, 2007
We consider branching processes whose behaviors depend on a dynamic random environment, in the sense that we assume the offsprings distributions of individuals parametrized, during time, by the realizations of a process describing the environmental ...
Pellerey, Franco
core   +5 more sources

Large deviations for Branching Processes in Random Environment

open access: yes, 2008
A branching process in random environment $(Z_n, n \in \N)$ is a generalization of Galton Watson processes where at each generation the reproduction law is picked randomly.
Bansaye, Vincent, Berestycki, Julien
core   +3 more sources

Three eruptions at the Fagradalsfjall Volcano in Iceland show rapid and predictable microbial community establishment [PDF]

open access: yesCommunications Biology
How natural environments transition from uninhabited to inhabited is an incompletely understood question in ecology. We leverage the 2021–2023 Fagradalsfjall eruptions in Iceland as a natural experiment, tracking microbial colonization on the new lava ...
Nathan Hadland   +3 more
doaj   +2 more sources

Zero-Range Process in Random Environment [PDF]

open access: yes, 2021
We survey our recent articles dealing with one dimensional attractive zero range processes moving under site disorder. We suppose that the underlying random walks are biased to the right and so hyperbolic scaling is expected. Under the conditions of our model the process admits a maximal invariant measure.
Bahadoran, Christophe   +3 more
openaire   +3 more sources

Editorial for Special Issue “Fractional Dynamics: Theory and Applications”

open access: yesFractal and Fractional, 2022
The investigation of fluctuations and random processes in complex systems and random environments has been attracting much attention for years [...]
Trifce Sandev
doaj   +1 more source

Strong Dispersal Limitation of Microbial Communities at Shackleton Glacier, Antarctica

open access: yesmSystems, 2023
Microbial communities can be structured by both deterministic and stochastic processes, but the relative importance of these processes remains unknown. The ambiguity partly arises from an inability to disentangle soil microbial processes from confounding
Nathan P. Lemoine   +8 more
doaj   +1 more source

Random Walks of a Cell With Correlated Speed and Persistence Influenced by the Extracellular Topography

open access: yesFrontiers in Physics, 2021
Cell migration through extracellular matrices is critical to many physiological processes, such as tissue development, immunological response and cancer metastasis.
Kejie Chen, Kai-Rong Qin
doaj   +1 more source

Branching processes in random environments with thresholds

open access: yesAdvances in Applied Probability, 2023
AbstractMotivated by applications to COVID dynamics, we describe a model of a branching process in a random environment $\{Z_n\}$ whose characteristics change when crossing upper and lower thresholds. This introduces a cyclical path behavior involving periods of increase and decrease leading to supercritical and subcritical regimes.
Giacomo Francisci, Anand N. Vidyashankar
openaire   +3 more sources

Branching Processes in a Lévy Random Environment [PDF]

open access: yesActa Applicandae Mathematicae, 2017
في هذه الورقة، نقدم عمليات التفرع في بيئة عشوائية ليفي. من أجل تحديد هذه الفئة من العمليات، ندرس فئة معينة من المعادلات التفاضلية العشوائية غير السلبية المدفوعة بالضوضاء البيضاء ومقاييس بواسون العشوائية المستقلة بشكل متبادل. باتباع تقنيات مماثلة كما هو الحال في داوسون ولي (آن. بروباب. 40: 813-857، 2012) ولي وبو (إلكترون. Commun. Probab.
Sandra Palau, Juan Carlos Pardo
openaire   +1 more source

Deterministic random walk model in NetLogo and the identification of asymmetric saturation time in random graph

open access: yesApplied Network Science, 2023
Interactive programming environments are powerful tools for promoting innovative network thinking, teaching science of complexity, and exploring emergent phenomena.
Ayan Chatterjee   +3 more
doaj   +1 more source

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