搜索结果: 1-15 共查到“理学 Lotka-Volterra”相关记录22条 . 查询时间(0.046 秒)
本文研究一类具有非局部扩散的时滞Lotka-Volterra竞争模型
行波解的存在性问题.通过利用交叉迭代技巧,我们可以把行波解的存在性转化为寻找一对适当的上下解,这篇文章中的结果推广了已有的一些结果.
本文利用重合度理论研究了一类变时滞二维非自治Lotka-Volterra互惠系统周期正解的存在性，得到了一些新的结果。
On a Hamiltonian version of a 3D Lotka-Volterra system
Hamiltonian dynamics Lotka-Volterra system stability of equilibria Poincar´ e compactification energy-Casimir mapping
2011/7/7
In this paper we present some relevant dynamical properties of a 3D Lotka-Volterra system from the Poisson dynamics point of view.
On a Hamiltonian version of a 3D Lotka-Volterra system
Hamiltonian dynamics Lotka-Volterra system stability of equilibria
2011/7/25
Abstract: In this paper we present some relevant dynamical properties of a 3D Lotka-Volterra system from the Poisson dynamics point of view.
Integrable deformations of Lotka-Volterra systems
Lotka-Volterra perturbations integrable systems Lie groups Poisson coalgebras Casimir functions N-dimensional
2011/7/5
The Hamiltonian structure of a class of three-dimensional (3D) Lotka-Volterra (LV) equations is
revisited by showing that the quadratic Poisson structure underlying its integrability structure
is ju...
Conditional symmetries and exact solutions of the diffusive Lotka-Volterra system
Lotka-Volterra system reaction-diffusion system Lie symmetry
2011/2/28
Q-conditional symmetries of the classical Lotka-Volterra system in the case of one space variable are completely described and a set of such symmetries in explicit form is constructed. The relevant no...
Multistep epsilon-algorithm, Shanks' transformation, and Lotka-Volterra system by Hirota's method
Multistep epsilon-algorithm Shanks' transformation Lotka-Volterra system Hirota's method
2011/2/28
In this paper, we give a multistep extension of the "–algorithm of Wynn, and we show that it implements a multistep extension of the Shanks’ sequence transformation which is cdefined by ratios of dete...
A Lotka-Volterra model with impulsive effects on the prey and stage structure on the predator
Stage structure Impulsive Global attractivity Permanence
2010/9/21
In this paper, we consider a Lotka-Volterra model with impulsive effects on the prey and stage structure on the predator. We prove that all solutions of the system are uniformly ultimately bounded, su...
危机信息在扩散过程中的失真会导致社会型危机的损失呈几何级数扩大,研究危机信息的扩散规律有助于社会型危机的应对.将危机信息分成真实信息和虚假信息两大类.从生态学角度来看,可以把社会型危机信息扩散过程看成是真实信息和虚假信息争取灾民信任的动态竞争过程.在Lotka-Volterra模型的基础上建立了社会型危机信息扩散模型,并进行仿真研究和实证分析.结果表明,危机信息扩散过程中的平衡状态只与替代系数相关...
On certain new integrable second order nonlinear differential equations and their connection with two dimensional Lotka-Volterra system
arbitrary parameters integrable cases
2010/4/1
In this paper, we consider a second order nonlinear ordinary differential equation of the form
$\ddot{x}+k_1\frac{\dot{x}^2}{x}+(k_2+k_3x)\dot{x}+k_4x^3+k_5x^2+k_6x=0$, where $k_i$'s, $i=1,2,...,6,$...
综述三维Lotka-Volterra系统的动力学行为研究的新进展，主要是极限环的算法化构造与个数问题,以及一些相关猜想. 讨论了一些计算机辅助推理在种群动力学中的应用以及相关的问题.
本文研究一般n个种群竞争的非自治Lotka-Volterra系统.得到了系统一致持续生存和全局渐近稳定的新的判别准则.这些准则推广了现有有关文献中的一些结果.
Lotka-Volterra型N-种群自治竞争系统的一些新结果
Lotka-Volterra系统 竞争 共存 灭绝
2007/12/11
研究一般自治Lotka-volterra型n种群自治竞争系统的绝灭性和共存性,得到了一些新的判别结果.
$n$维可投影 Lotka-Volterra竞争系统的渐近性
Lotka-Volterra 渐近稳定 径向投影 测度
2007/12/11
3)$维Lotka-Volterra 竞争系统, 当每一个坐标轴上的平衡点均为渐近稳定时, 该系统几乎所有解趋于坐标轴上平衡点所组成的点集, 即，不趋于坐标轴上平衡点的解集, 其在 $n$ 维空间的测度为零. 本文证明当 $n$ 维Lotka-Volterra 竞争系统可被逐维投影到一维系统时, 该猜测成立, 并给出了可投影条件的代数判据.本文所得结论包含了已有文献的结果.