Results 11 to 20 of about 172,960 (308)

Generalized contact process on random environments [PDF]

open access: yesPhysical Review E, 2002
6 pages, 7 ...
Szabo, Gyorgy   +2 more
openaire   +3 more sources

Birth and death processes in interactive random environments

open access: yesQueueing Systems, 2022
This paper studies birth and death processes in interactive random environments where the birth and death rates and the dynamics of the state of the environment are dependent on each other. Two models of a random environment are considered: a continuous-time Markov chain (finite or countably infinite) and a reflected (jump) diffusion process.
Guodong Pang   +2 more
openaire   +2 more sources

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

Uncertain Random Optimization Models Based on System Reliability

open access: yesInternational Journal of Computational Intelligence Systems, 2020
The reliability of a dynamic system is not constant under uncertain random environments due to the interaction of internal and external factors. The existing researches have shown that some complex systems may suffer from dependent failure processes ...
Qinqin Xu, Yuanguo Zhu
doaj   +1 more source

Determining the Economic Manufacturing Lot Size with Expedited Fabrication Rate and Product Quality Assurance [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2020
Operations in manufacturing environments are turbulent. Thus, production managers must be capable of dealing with diverse and unexpected situations, such as either random production of imperfect items or unanticipated changes in customers’ orders ...
Yuan-Shyi Peter Chiu   +3 more
doaj   +1 more source

On Branching Processes in Random Environments

open access: yesThe Annals of Mathematical Statistics, 1969
$\{\zeta_n\}$ is a sequence of $\operatorname{iid}$ "environmental" variables in an abstract space $\Theta$. Each point $\zeta \varepsilon \Theta$ is associated with a $\operatorname{pgf} \phi_\zeta(s)$. The branching process $\{Z_n\}$ is defined as a Markov chain such that $Z_0 = k$, a finite integer, and given $Z_n$ and $\zeta_n, Z_{n+1}$ is ...
Smith, Walter L., Wilkinson, William E.
openaire   +3 more sources

Random walk in random environment with asymptotically zero perturbation [PDF]

open access: yes, 2006
We give criteria for ergodicity, transience and null recurrence for the random walk in random environment on \Z+={0,1,2,…}, with reflection at the origin, where the random environment is subject to a vanishing perturbation.
Menshikov, MV   +5 more
core   +2 more sources

Confounding environmental colour and distribution shape leads to underestimation of population extinction risk. [PDF]

open access: yesPLoS ONE, 2013
The colour of environmental variability influences the size of population fluctuations when filtered through density dependent dynamics, driving extinction risk through dynamical resonance. Slow fluctuations (low frequencies) dominate in red environments,
Mike S Fowler, Lasse Ruokolainen
doaj   +1 more source

The Contact Processes in a Random Environment

open access: yesThe Annals of Probability, 1991
This paper deals with one-dimensional contact process in an i.i.d. environment (CPRE). Let \(\xi_ t\subset\mathbb{Z}\) be the state of the process at time \(t\). Then, the dynamics are formulated as follows: a) Particles are born at unoccupied sites \(x\) at rate \(|\xi_ t\cap\{x- 1, x+1\}|\).
Bramson, Maury   +2 more
openaire   +2 more sources

Quenched invariance principles for random walks and elliptic diffusions in random media with boundary [PDF]

open access: yes, 2014
Via a Dirichlet form extension theorem and making full use of two-sided heat kernel estimates, we establish quenched invariance principles for random walks in random environments with a boundary.
Croydon, David A.   +5 more
core   +1 more source

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