#### Filter Results:

- Full text PDF available (8)

#### Publication Year

1996

2015

- This year (0)
- Last 5 years (2)
- Last 10 years (5)

#### Publication Type

#### Co-author

#### Journals and Conferences

#### Key Phrases

Learn More

- J P Baltanás, L López, +4 authors M A F Sanjuán
- Physical review. E, Statistical, nonlinear, and…
- 2003

We consider an overdamped bistable oscillator subject to the action of a biharmonic force with very different frequencies, and study the response of the system when the parameters of the high-frequency force are varied. A resonantlike behavior is obtained when the amplitude or the frequency of this force is modified in an experiment performed by means of an… (More)

- Polina Landa, Alexander Kaplan, Elena Zhukovskaya
- Biological Cybernetics
- 2003

The memory retrieval process of number problems with external noise is studied with the use of the Bonhoeffer–van der Pol oscillator model. Three cell assembly responses are simulated, coding one true number and two neighboring erroneous. The time of a correct response, T c, was averaged over statistical assemblies of numerous trials. It is demonstrated… (More)

- Polina S. Landa
- 2015

The development of turbulence in subsonic submerged jets is reviewed. It is shown that the turbulence results from a strong amplification of the weak input noise that is always present in the jet nozzle exit section. At a certain distance from the nozzle the amplification becomes essentially nonlinear. This amplified noise leads to a transition of the… (More)

- W Ebeling, P S Landa, V G Ushakov
- Physical review. E, Statistical, nonlinear, and…
- 2001

We study here the different modes of self-oscillations in ring Toda chains with Rayleigh-type negative friction. Assuming that at small friction the shape of self-oscillations is close to one of the known Toda solitonlike solutions we use analytical methods in combination with numerical ones for study of the self-oscillations. We calculate explicitly for a… (More)

- P S Landa, A Rabinovitch
- Physical review. E, Statistical physics, plasmas…
- 2000

Two systems, which are models of biological processes, are considered. These systems are notable for responding to different external actions nearly alike. This is associated with the fact that an external action excites only their natural intrinsic motions. Two kinds of external actions, harmonic and random, are studied. It is shown that each of them… (More)

Experiments show that the amplitude of turbulent pulsation in submerged jets rises with increasing distance from the nozzle, at first slowly and then, after a certain distance, rapidly. This dependence on distance from the nozzle closely resembles the dependence of an order parameter on temperature in the case of a second-order phase transition. Following… (More)

- P. S. Landa
- 2011

We show that wave excitation and propagation in an inhomogeneous medium leads to the simultaneous appearance of a huge number of waves with different phase velocities. This phenomenon arises in any medium with inhomogeneous parameters, e.g. in fluid jets where the inhomogeneity appears as a result of the boundary layer. Because of fluctuations (however… (More)

- P S Landa, I A Khovanov, P V E McClintock
- Physical review. E, Statistical, nonlinear, and…
- 2008

The response of a weakly damped bistable oscillator to an external periodic force is considered theoretically. In the approximation of weak signals we can write a linearized equation for the signal and the corresponding nonlinear equation for the noise. These equations contain two unknown parameters: An effective stiffness and an additional damping factor.… (More)

- P S Landa, M G Rozenblium
- Biofizika
- 1996

A modification of the Mackey-Glass model for a respiration control system is proposed. The equations corresponding to the proposed model were built. A solution of the equations was obtained, which corresponds to the Cheyne-Stokes irregular respiration.

We consider theoretically the spontaneous oscillations of an elastic cylinder in a streaming fluid flow. Such oscillations are responsible for stall flutter in e.g. turbine blades and bridges, or Æolian tones when in the acoustic range. The process of vortex separation from the oscillating surface is modelled as a self-excited oscillator. The vortex… (More)