The influence of the Coriolis force on the peculiarities of the formation and propagation of forced sea waves is studied. The generation of long waves by a focused monochromatic source is observed. Two cases — the low frequency and high frequency waves are investigated.
The interaction of a pair a cyclone — an anticyclone with a sea shore is considered. The equations of dynamics of vertical pair conservation and laws of preservation are received. On their basis the features of movement of vortices and limiting regimes are investigated.
Explicit solutions of the Schrödinger matrix equation are received and performed the calculations of the main invariants. It is established that the characteristic equation in all cases has only 2 roots, one is a simple and second is multiple.
The new theorem which generalizing the theorems of a straight line and a circle is formulated and proved.With their help complex potentials of filtration flows in the two — component media filling angle area are received.
In this paper we study the backaction of measuring tunneling current through double quantum dot on it’s dynamics. We propose a new method for evaluating of measured current operator. Results are demonstrated as a graph representing measured stationary current through double quantum dot as a function of detection performance. It is shown that increasing of detection performance leads to quick decreasing of current through double quantum dot, which is consistent with quantum Zeno effect.
We show that it is possible to use the exulton-like solutions of the nonlinear Schrődinger equation to simulation of the evolution of frontal vortical zone of an intrathermocline eddies in the process of its collapse.
An interesting connection between Einstein-Friedmann equations for the models of universe filled with scalar field and the special form of Abel equation of the first kind is presented. In particular, it is shown how, knowing the general solution of the Abel equation (corresponding to the given scalar field potential) one can obtain the general solution of the Friedmann Equation.
The new method of processing of the information in location systems is presented. It is based on positions of the theory of optimum reception. As the accepted message dependence of pressure on an exit radar-tracking the receiver from a corner of scanning is used by the diagramme of an orientation of antenna system. Theoretical positions and results of preliminary modeling calculations are resulted. Possibility of increase in the azimuthal permission of two purposes without change of spatial base of a signal is shown.
Obtained the characteristic system of equations of complex geometrical optics for the case of real ray trajectories.
Possibility of application of multi-channel system is considered at construction of free space optics networks.Application of the given method allows to increase effective range of transmission to 1,5 times.
The trunced symbolic equations with any unifrequent oscillatory system allowing with use of characteristics of transistor-capacitor active one-port circuit are received to find a stationary mode and transients in the generator at presence of sources of noise.
On the basis of the analysis of principles of antennas’ placing the way of their mutual resistance’s definition taken as a principle the developed device is developed. Introduction of a quantitative estimation of electromagnetic conditions on the basis of an establishment of mutual resistance’s values will allow to solve a problem of electromagnetic compatibility of radio-electronic means.
In this work some conditions allows to increase of the indirect nuclear quadrupole resonance are investigated. The proposed method based on the stochastic resonance phenomena in the input electronic circuits of spectrometer. This effect allows provide the essential raise of the signal-to-noise ratio.
Magnetiс—resonance properties of Fe3O4 thin films with sublayer Fe on МgO and on Si/SiO2 substrates have been investigated. The magnetic properties strengthening was established. This fact gives hope of success using of such structure as magnetic tunneling junction.
In the present paper we focused our attention on problems of property variable of materials by interstitial impurity-induced perturbation of regular structure. This problem may be solve by NMR study of quadrupolar nuclear, that is probe of electronic environment of guest atom embedded in a host lattice. The study of evolution of coherences of quadrupolar nuclear with spin S = 3/2 in the presence anisotropy chemical shift is shown that interference terms between time dependent quadrupolar interaction and anisotropy chemical shift are induce dynamic shifts of satellites and difference broadening line of its. The extraction of Q-CSA interference terms from NMR experimental data give us not only tensor parameters but the information about a location of tensor principal axes.
The effect of absorption on the formation of ray trajectories and heterogeneity of the structure of propagating waves is studied. Numerical calculations of the ray trajectories are performed.
The denoising method of the pulse nuclear quadrupole resonance (NQR) signals was investigated for the case of the small signal to noise ratio. The maximum entropy method of the autoregressive model was applied for the analysis of the experimental NQR data. The obtained results show the efficiency of proposed method in the conditions of the limited sampling rate for the limited time of the detection and digital signal sampling for the NQR detectors.
On the basis of a method of the maximal credibility considers questions limiting accuracy parameters of a signal and the sanction on range at approach of the purpose a locator. It is shown, that due to increase of the attitude the signal/noise essentially increases an opportunity of the sanction of the radio impulses reflected from the purpose. The supersanction on range is provided with a method of the maximal credibility.
Attached results is analysis of plane vertical layer of triangle prisms structure. Analysis proved the existence of periodic structure concerning the width and height. While forming the layer.
The article is devoted to the investigation of influence of the nanomodification on physic-technical characteristics of dry building mixes. It was shown that the nanomodification leads to reorganization of structure of front glues, to increase of their durability and to essential reduction of the cost price.
The temperature evolution of crystal structure of multiferroic Tb0.95Bi0.05MnO3 has been studied by powder neutron diffraction in the temperature range 100—450 K. It is shown that the lattice parameters and volume expansion coefficient demonstrate anomalies in the interval 150—250 K. These anomalies could be attributed with a phase separation observed earlier for this compound.
The results of study of conditions of origination of electrical breakdown of gas in dielectric insulators of anode propellant (xenon) supply lines of prospective high-impulse increased-power electric thrusters intended for spacecraft orientation and stabilization are presented.
The methodology of integration of computing and natural experiments on lecture and laboratory researches is offered at studying physic-technical disciplines.
A preconditioner for large systems of linear equations based on an incomplete block-decomposition for a block-tridiagonal matrices is considered. This method generalizes methods are developed by Buzdin and Wittum [1; 2]. A method of choosing quasioptimal parameters for consequences of tangential and two-frequencies decompositions based on analysis of model problems is developed. It’s convergence rate is better than ADI’s convergence rate in commutational case..
Difference methods an approximate solution of a three-dimensional equation of ions diffusion with mixed derivatives and divergence first derivatives are considered. The task is reduced to a chain of three two-dimensional parabolic equations on base of the summary approximation method. Difference operators are constructed, and an analysis of its properties, test calculations and an estimate of a mixed derivatives role are carried out.
A model of filtration in the drainage system that takes into account the fractal properties of soil.
Some properties of almost periodic functions with values in banach space are considered.
In manydimensional projective space distribution of planes is considered. The way of giving normal generalized affine connection associated with the distribution is proposed. It is shown that this connection is given by connection tensor and normal linear connection object. They define its curvature and torsion tensors. Semicanonical case is investigated when subtensor of the connection tensor vanishes. Two notions are
involved: non-degeneration tensor of torsion and semiholonomical distribution. It is proved that vanishing of non-degeneration tensor implies degenerating to linear connection of the semicanonical normal affine connection. The notion of semiholonomity let us describe semicanonical connection without torsion with non-zero nondegeneration tensor.