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- Eugene Kazantsev
- 2008

The use of the data assimilation technique to identify optimal topography is discussed in frames of time-dependent motion governed by non-linear barotropic ocean model. Assimilation of artificially generated data allows to measure the influence of various error sources and to classify the impact of noise that is present in observational data and model… (More)

- Eugene Kazantsev
- J. Comput. Physics
- 2010

Variational data assimilation technique applied to identification of optimal approximations of derivatives near boundary is discussed in frames of one-dimensional wave equation. Simplicity of the equation and of its numerical scheme allows us to discuss in detail as the development of the adjoint model and assimilation results. It is shown what kind of… (More)

- Eugene Kazantsev
- 2013

A variational data assimilation technique was used to estimate optimal discretization of interpolation operators and derivatives in the nodes adjacent to the rigid boundary. Assimilation of artificially generated observational data in the shallow-water model in a square box and assimilation of real observations in the model of the Black sea are discussed.… (More)

Variational data assimilation technique applied to the identification of the optimal discretization of interpolation operators and derivatives in the nodes adjacent to the boundary of the domain is discussed in frames of the linear shallow water model. The advantage of controlling the discretization of operators near boundary rather than boundary conditions… (More)

- Eugene Kazantsev
- 2008

In this paper, we look for an operator that describes the relationship between small errors in representation of the bottom topography in a barotropic ocean model and the model’s solution. The study shows that the model’s solution is very sensitive to topography perturbations in regions where the flow is turbulent. On the other hand, the flow exhibits low… (More)

- Eugene Kazantsev
- 2012

A 4D-Var data assimilation technique is applied to a ORCA-2 configuration of the NEMO in order to identify the optimal parametrization of the boundary conditions on the lateral boundaries as well as on the bottom and on the surface of the ocean. The influence of the boundary conditions on the solution is analyzed as in the assimilation window and beyond the… (More)

- E F Kazantsev
- Biofizika
- 1978

General idea of a gene as a part of the hereditary molecule DNA permits to correlate various alleles states of a gene to various energy states of the hereditary molecule. Hereditary molecule under the action of a random force moves along its energy states. So far as the number of individuals in a population usually is very big, such motion of a gene in… (More)

- E F Kazantsev
- Biofizika
- 1978

The ESR method shows that variation of lysin concentration in the maiz enzyme resulting from the Opaque-2 mutation correlates with the number of paramagnetic centres in seed fractions. Increase of the lysin concentration brings about a quick rise of the ESR amplitude in the enzyme fraction of aleyrone layer and a decrease of the ESR amplitude in the seed… (More)

- E F Kazantsev
- Biofizika
- 1978

Electrodiffusion equations are deduced which describe the formation of the action potential in the axone. It is suggested that the membrane dividing internal and external axone electrolytes after being stimulated with an electric impulse returns after some time to the initial "closed" state. It is shown that the overshut of the action potential takes place… (More)

- E F Kazantsev
- Biofizika
- 1969