Results 1 to 10 of about 293 (46)

Roosting ecology of endangered plant‐roosting bats on Okinawa Island: Implications for bat‐friendly forestry practices

open access: yesEcology and Evolution, Volume 11, Issue 20, Page 13961-13971, October 2021., 2021
We investigated the roosting ecology of two threatened island bats: the Ryukyu tube‐nosed bat Murina ryukyuana and Yanbaru whiskered bat Myotis yanbarensis. Murina ryukyuana roosted primarily in understory foliage, using tree cavities more often as maternity roosts, while M.
Jason H. Preble   +3 more
wiley   +1 more source

Stochastic optimal and time-optimal control studies for additional food provided prey–predator systems involving Holling type III functional response

open access: yesComputational and Mathematical Biophysics, 2023
This article consists of a detailed and novel stochastic optimal control analysis of a coupled non-linear dynamical system. The state equations are modelled as an additional food-provided prey–predator system with Holling type III functional response for
Prakash Daliparthi Bhanu   +1 more
doaj   +1 more source

The effect of public health awareness and behaviors on the transmission dynamics of syphilis in Northwest China, 2006–2018, based on a multiple-stages mathematical model

open access: yesInfectious Disease Modelling, 2021
Syphilis, a sexually transmitted infectious disease caused by the bacterium treponema pallidum, has re-emerged as a global public health issue with an estimated 12 million people infected each year.
Wenjun Jing   +3 more
doaj   +1 more source

From ODE to Open Markov Chains, via SDE: an application to models for infections in individuals and populations

open access: yesComputational and Mathematical Biophysics, 2020
We present a methodology to connect an ordinary differential equation (ODE) model of interacting entities at the individual level, to an open Markov chain (OMC) model of a population of such individuals, via a stochastic differential equation (SDE ...
Esquível Manuel L.   +2 more
doaj   +1 more source

The flashing ratchet and unidirectional transport of matter [PDF]

open access: yes, 2010
We study the flashing ratchet model of a Brownian motor, which consists in cyclical switching between the Fokker-Planck equation with an asymmetric ratchet-like potential and the pure diffusion equation.
A. D. Polyanin   +10 more
core   +2 more sources

A scaling proof for Walsh's Brownian motion extended arc-sine law [PDF]

open access: yes, 2012
We present a new proof of the extended arc-sine law related to Walsh's Brownian motion, known also as Brownian spider. The main argument mimics the scaling property used previously, in particular by D.
Vakeroudis, Stavros, Yor, Marc
core   +4 more sources

Adaptive dynamics in logistic branching populations [PDF]

open access: yes, 2007
We consider a trait-structured population subject to mutation, birth and competition of logistic type, where the number of coexisting types may fluctuate.
Champagnat, Nicolas, Lambert, Amaury
core   +5 more sources

Coexistence for a kind of stochastic three-species competitive models

open access: yesOpen Mathematics, 2019
The coexistence of species sustains the ecological balance in nature. This paper focuses on sufficient conditions for the coexistence of a three-species stochastic competitive model, where the model has non-linear diffusion parts.
Huang Nantian   +3 more
doaj   +1 more source

Joint densities of first hitting times of a diffusion process through two time dependent boundaries [PDF]

open access: yes, 2014
Consider a one dimensional diffusion process on the diffusion interval $I$ originated in $x_0\in I$. Let $a(t)$ and $b(t)$ be two continuous functions of $t$, $t>t_0$ with bounded derivatives and with $a(t)t_0$. We study the joint distribution of the two
Sacerdote, Laura   +2 more
core   +1 more source

Diffusive propagation of wave packets in a fluctuating periodic potential [PDF]

open access: yes, 2010
We consider the evolution of a tight binding wave packet propagating in a fluctuating periodic potential. If the fluctuations stem from a stationary Markov process satisfying certain technical criteria, we show that the square amplitude of the wave ...
A. Amir   +12 more
core   +1 more source

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