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Submit scientific paper, scientific publications, International Research Journal | Meždunarodnyj naučno-issledovatel’skij žurnal

ISSN 2227-6017 (ONLINE), ISSN 2303-9868 (PRINT), DOI: 10.18454/IRJ.2227-6017
ПИ № ФС 77 - 51217

CURRENT SPECTROSCOPY OF DEFECT STATES IN As-Se GLASSY SYSTEM

Posted in 2017, Issue № 5(59) May 2017, PHYSICS AND MATHEMATICS | 0 comments

Results of a research of an isothermal relaxation of dark current in thin layers of the vitreous As-Se system are presented. Calculation of contact capacity Cc is carried out. Cc is characterized by power law dispersion and reveals exponential dependence on temperature with activation energy Ea ~ 1.3 эВ. Assessment of thickness of the layer corresponding to the contact capacity and electric field strength in contact area gives values for As2Se3 structure dk = 1.24*10-7 m and EC = 8.06*103 V/cm respectively. The appearance of the I-V characteristics of the Al-CSP-Al sandwich structures indicates the influence of the contact phenomena on the polarization processes and the existence of a Schottky barrier whose height is (0.30 … 0.32) eV for As2Se3 TI samples and (0.35 … 0.38) eV for As2Se3 HF samples.

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RESEARCH OF TEMPERATURE CONDITIONS ON THE SURFACE OF FUEL ELEMENTS UNDER DEPARTURE NUCLEATE BOILING

Posted in 2017, Issue № 4(58) April 2017, PHYSICS AND MATHEMATICS | 0 comments

The paper presents the research of the phenomenon of formation and propagation of the film boiling with regard to the real fuel elements. The change in the temperature conditions and the influence of some constructive and operating parameters on the studied processes speed are considered. It is shown that with a sufficient perturbation of the shell temperature a wave of film boiling is formed. A numerical algorithm is used to implement the mathematical model of the process, developed earlier. These issues are of interest in the study of the initial stages of the development of accidents associated with overheating of fuel elements.

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SOME ADDITIONS TO THE PROBLEM OF MULTIDIMENSIONAL INTEGRAL OPERATORS WITH OSCILLATING COEFFICIENTS

Posted in 2017, Issue № 4(58) April 2017, PHYSICS AND MATHEMATICS | 0 comments

The paper presents multidimensional integral operators with homogeneous cores and radial oscillating coefficients of |x|iδ, acting in space L2(Bn). A symbol is defined for operators of this type in the terminology while necessary and sufficient conditions for noethericity and the computational formula for the index are obtained. A criterion for noethericity property and the index formula for a similar class of operators acting in L2(Bn) have been established. In this paper, we give some important additions and refinements to the main results published earlier. We have also considered a special case of an integral operator as a supplement.

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EQUATIONS OF FUNCTIONAL DEPENDENCIES FOR ROTATIONS OF TWO PLANETS

Posted in 2017, Issue № 4(58) April 2017, PHYSICS AND MATHEMATICS | 0 comments

In the article we have provided equations for dependences by modifying the Kepler equation with respect to the orbital motions of the planets and calculated the rotational and orbital motions of the planets with the angles of their rotation. We have established the wave principles of forward and reverse rotation of planets. The established dependencies are manifested at various scale levels of structural interactions, including bio-systems. The equality of angles of the Sun and the Earth rotation through the resonance of the particle-wave mechanism determines the possibility of terrestrial photosynthesis is presented in the paper. The accuracy of the calculations corresponds to the accuracy of experimental data.

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FREQUENCY DEPENDENCE OF INDUCTION CURRENTS LOCALIZATION

Posted in 2017, Issue № 5(59) May 2017, PHYSICS AND MATHEMATICS | 0 comments

The dynamics of changes in the structure of induction currents with increasing frequency of the external quasistationary magnetic field is considered in the paper. A numerical solution of the system of Maxwell’s equations describing the physics of the problem is carried out. The induction currents are determined by the amplitude and the phase shift relative to the external field. Because of the feedbacks caused by Maxwell’s equations, induction current have a complex structure, and its distinctive feature is the presence of radial coordinates and frequencies at which the currents in the skin layer move in reverse phase.

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GENERAL FRAMES AT THE ASSESSMENT OF THE TIME OF FOR SIGNAL RECONSTRUCTION WITHOUT PHASE

Posted in 2017, Issue № 3(57) March 2017, PHYSICS AND MATHEMATICS | 0 comments

Search of fast algorithms for doing signal reconstruction without phase is actual now. Algo-rithms of signal reconstruction are important in handling of various signals, in particular from speech recognition technology , in a tomography. The main property of frames which makes them so useful in applied problems is their redundancy. In general, a carefully chosen frame can provide numerical stability for reconstruction and an ability to capture important signal characteristics. The family of frames signal reconstruction on absolute value of frame coefficients in polynomial time.

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