harrow
发表于 2025-3-28 18:04:56
Soiling a water reservoir with a bay and the Caspian Sea puzzles,Polluting a water reservoir with sewage of dissolvable pollutants. The Caspian Sea puzzles. Soiling a water reservoir through a bay. Regulating a water regime and salinity.
prosperity
发表于 2025-3-28 20:36:33
Dynamics in coexistence of populations,The mathematical models for the coexistences of the types “predator — prey”, competition (opposition) and symbiosis. The phase and bifurcation portraits.
恶名声
发表于 2025-3-29 02:55:40
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overreach
发表于 2025-3-29 03:39:56
Mathematical model for the immune response of a living organism to an infectious invasion,The simplified phenomenological model in the form of the fourth-order differential equation system for the immune response of the organism to an infection. Basic variants of the disease progress, its dependence upon parameters; the extent of the infection and the treating counteractions.
商店街
发表于 2025-3-29 10:00:15
,Mathematical model for the community “Producers — Products — Managers”,Possible kinds of phase portraits. Evolution of the community with the growth of technologies and its dependence upon other parameters.
表示向前
发表于 2025-3-29 14:30:30
Linear oscillators,A mathematical model for the linear oscillator. Possible kinds of motions. Phase and bifurcation portraits. The motions described by a linear oscillator: equilibrium states, harmonic, dissipative and divergent oscillations.
hypotension
发表于 2025-3-29 16:09:31
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construct
发表于 2025-3-29 21:39:49
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vasculitis
发表于 2025-3-30 00:54:49
Soft and hard regimes of exciting auto-oscillations,Constructing phase and bifurcation portraits for soft and hard excitations of auto-oscillations on the basis of a point mapping study.
Progesterone
发表于 2025-3-30 04:07:58
,Stochastic oscillator (the “contrary clock”),An oscillator of an unpredictable behaviour. A mathematical model, a phase portrait and a point mapping. Unpredictability and randomness. Two kinds of behaviour of dynamical systems. Stability and instability, predictability and unpredictability. An oscillator (a dynamical system) as a generator of stochastic oscillations.