Results 31 to 40 of about 538,081 (247)
Minimal wave speed of competitive lattice dynamical systems with delays
Advances in Difference Equations, 2018 This paper deals with the minimal wave speed of delayed lattice dynamical systems. We obtain the minimal wave speed by presenting the existence and nonexistence of traveling wave solutions, which completes the earlier results.
Shuxia Pan, Hong-Bo Shi
doaj +1 more source
Exact hydrodynamic solution of a double domain wall melting in the spin-1/2 XXZ model
SciPost Physics, 2022 We investigate the non-equilibrium dynamics of a one-dimensional spin-1/2 XXZ model at zero-temperature in the regime $|\Delta|< 1$, initially prepared in a product state with two domain walls i.e, $|\downarrow\dots\downarrow\uparrow\dots\uparrow ...
Stefano Scopa , Pasquale Calabrese, Jérôme Dubail
doaj +1 more source
Dynamics for a Ratio-Dependent Prey–Predator Model with Different Free Boundaries
MathematicsIn this paper, we study the dynamics of the ratio-dependent type prey–predator model with different free boundaries. The two free boundaries, determined by prey and predator, respectively, implying that they may intersect with each other as time evolves,
Lingyu Liu, Xiaobo Li, Pengcheng Li
doaj +1 more source
A diffusive stage-structured model with a free boundary
Boundary Value Problems, 2018 In this paper we mainly consider a free boundary problem for a single-species model with stage structure in a radially symmetric setting. In our model, the individuals of a new or invasive species are classified as belonging either to the immature or to ...
Jingfu Zhao +2 more
doaj +1 more source
Spatial assortment of mixed propagules explains the acceleration of range expansion. [PDF]
PLoS ONE, 2014 Range expansion of spreading organisms has been found to follow three types: (i) linear expansion with a constant rate of spread; (ii) bi-phase expansion with a faster linear expansion following a slower linear expansion; and (iii) accelerating expansion
Andriamihaja Ramanantoanina +2 more
doaj +1 more source
Stability Analysis of a Rumor-Spreading Model with Two Time Delays and Saturation Effect
MathematicsTime delay and nonlinear incidence functions have a significant effect on rumor-spreading. In this article, a rumor-spreading model with two unequal time delays and a saturation effect is proposed.
Chunfeng Wei +4 more
doaj +1 more source
上海师范大学学报. 自然科学版We consider the asymptotic behavior of solutions to the porous medium equation with a positive bistable type reaction term and Dirichlet boundary condition. We first prove a convergence result.
LI Fang +3 more
doaj +1 more source
Asymptotic Behavior of Solutions of Free Boundary Problem with Logistic Reaction Term
Journal of Applied Mathematics, 2014 We study a free boundary problem for a reaction diffusion equation modeling the spreading of a biological or chemical species. In this model, the free boundary represents the spreading front of the species.
Jingjing Cai
doaj +1 more source
Dynamics of a delayed rumor spreading model with discontinuous threshold control
Heliyon, 2022 In this paper, we studied a delayed rumor spreading model with discontinuous threshold control. First, we studied the existence of equilibria of the subsystem.
Chunru Li, Zujun Ma, Yuanyuan Wang
doaj +1 more source
Advanced Functional Materials, EarlyView.An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone +11 more
wiley +1 more source