Results 21 to 30 of about 756,278 (227)

Global existence and boundedness in a two-species chemotaxis system with nonlinear diffusion

open access: yesOpen Mathematics, 2021
This paper is concerned with a chemotaxis system ut=Δum−∇⋅(χ1(w)u∇w)+μ1u(1−u−a1v),x∈Ω,t>0,vt=Δvn−∇⋅(χ2(w)v∇w)+μ2v(1−a2u−v),x∈Ω,t>0,wt=Δw−(αu+βv)w,x∈Ω,t>0,\left\{\begin{array}{ll}{u}_{t}=\Delta {u}^{m}-\nabla \cdot \left({\chi }_{1}\left(w)u\nabla w)+{\mu
Huang Ting, Hou Zhibo, Han Yongjie
doaj   +1 more source

LOGISTICS OUT SOURCING & TRUST: CONCEPTUAL FRAME WORK

open access: yesRevue Economie, Gestion et Société, 2021
Revue Economie, Gestion et Société, مجلد 1, عدد 29 (2021)
Mouaad Chafai   +3 more
openaire   +3 more sources

Source Recertification, Refurbishment, and Transfer Logistics [PDF]

open access: yes, 2013
The 2012 Gap Analysis of Department of Energy Radiological Sealed Sources, Standards, and Materials for Safeguards Technology Development [1] report, and the subsequent Reconciliation of Source Needs and Surpluses across the U.S. Department of Energy National Laboratory Complex [2] report, resulted in the identification of 33 requests for nuclear or ...
Gastelum, Zoe N.   +3 more
openaire   +3 more sources

How far does logistic dampening influence the global solvability of a high-dimensional chemotaxis system?

open access: yesBoundary Value Problems, 2021
This paper deals with the homogeneous Neumann boundary value problem for chemotaxis system { u t = Δ u − ∇ ⋅ ( u ∇ v ) + κ u − μ u α , x ∈ Ω , t > 0 , v t = Δ v − u v , x ∈ Ω , t > 0 , $$\begin{aligned} \textstyle\begin{cases} u_{t} = \Delta u - \nabla ...
Ke Jiang, Yongjie Han
doaj   +1 more source

Blow-up of nonradial solutions to the hyperbolic-elliptic chemotaxis system with logistic source

open access: yesComptes Rendus. Mathématique, 2023
This paper is concerned with the blow-up of solutions to the following hyperbolic-elliptic chemotaxis system: \begin{equation*} {\left\lbrace \begin{array}{ll} u_{t} =-\nabla \cdot (\chi u \nabla v)+g(u), \qquad x\in \Omega , \ t>0,\\ \;\;\; 0 =\Delta v-
Baghaei, khadijeh
doaj   +1 more source

Sources of Sex Information Used by Young British Women Who Have Sex with Women (WSW) and Women Who Have Sex Exclusively with Men (WSEM): Evidence from the National Survey of Sexual Attitudes and Lifestyles [PDF]

open access: yes, 2018
There is little consideration about the provision of information about sex to women who have sex with women (WSW). This study drew on data from the third National Survey of Sexual Attitudes and Lifestyle, a nationally representative survey of people in ...
A Bleakley   +26 more
core   +1 more source

Boundedness in a two-dimensional chemotaxis system with signal-dependent motility and logistic source

open access: yesBoundary Value Problems, 2023
In this paper, we study the following chemotaxis system with a signal-dependent motility and logistic source: { u t = Δ ( γ ( v ) u ) + μ u ( 1 − u α ) , x ∈ Ω , t > 0 , 0 = Δ v − v + u r , x ∈ Ω , t > 0 , u ( x , 0 ) = u 0 ( x ) , x ∈ Ω $$ \textstyle ...
Yanmei Hu, Wanjuan Du
doaj   +1 more source

Visualizing the logistic map with a microcontroller [PDF]

open access: yes, 2011
The logistic map is one of the simplest nonlinear dynamical systems that clearly exhibit the route to chaos. In this paper, we explored the evolution of the logistic map using an open-source microcontroller connected to an array of light emitting diodes (
  +8 more
core   +1 more source

Global existence of classical solutions for the 2D chemotaxis-fluid system with logistic source

open access: yesAIMS Mathematics, 2022
In this paper, we consider the incompressible chemotaxis-Navier-Stokes equations with logistic source in spatial dimension two. We first show a blow-up criterion and then establish the global existence of classical solutions to the system for the Cauchy ...
Yina Lin, Qian Zhang, Meng Zhou
doaj   +1 more source

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