Scientific Journal of KubSAU

Polythematic online scientific journal
of Kuban State Agrarian University
ISSN 1990-4665
AGRIS logo UlrichsWeb logo DOAJ logo
Search by author's name Search by title
643 kb

SIMULATION OF PARTICLE DYNAMICS IN THE STERN-GERLACH APPARATUS

abstract 1171603060 issue 117 pp. 929 – 950 31.03.2016 ru 478
The model of the motion of particles in the SternGerlach apparatus in the classical and quantum mechanics was developed. The data simulation of particle trajectories and distribution of silver atoms on the surface of the plate in their deposition are discussed. It was found that for the experimentally observed distribution of two-dimensional shapes of the atoms must be assumed that the atoms are not involved in the precession motion in a magnetic field, while maintaining the direction of the magnetic moment, for example, parallel to the induction vector of the magnetic field during the time of motion in the apparatus. To obtain a realistic picture of the figure of the scattering of atoms used a classical model of movement and expression of forces compatible with the quantum picture of the motion of particles with spin ½. The magnetic field is simulated based on the original Stern-Gerlach data describing the distribution of the gradient of the induction components related to the splitting of the beam. Quantum model of particle motion is based on the Pauli equation in the boundary layer approximation. It is found that in this model, depending on the initial polarization of the particle, beam is split into either two or is deflected towards the magnet blade or in the opposite direction. It is shown that if the initial conditions for the task are reproducing the geometric dimensions and the magnetic field in the Stern-Gerlach apparatus, the figure of the scattering particles in the shape of the outline is similar to the experimentally observed shape
318 kb

ELECTRON STRUCTURE AND THE YANGMILLS THEORY

abstract 1171603061 issue 117 pp. 951 – 976 31.03.2016 ru 441
We have studied the question of the electromagnetic structure of a relativistic electron in connection with the Yang-Mills theory. From the Lorentz electrodynamics equations of and Dirac electron theory derived an equation describing nonlinear waves of the scalar potential. It is shown that this equation is similar to the equation describing the dynamics of the condensate in the Yang-Mills theory. There is also the connection to the Schrödinger equation: the scalar potential is a complex function, similar to the wave function in the Schrödinger theory. The model discussed electron is a solitary wave that occurs in the electromagnetic field. This wave has the properties of charged particles, able to interact with the external electric and magnetic field. An analytical solution describing solitary electromagnetic waves traveling at a speed less than the speed of light has been obtained. The existence of solitary electromagnetic waves consistent with the Hertz's hypothesis that suggested that cathode rays are a form of wave motion in an electromagnetic field. The proposed model of the electromagnetic structure of the electron thus solves the problem of duality wave-particle, which historically arose in the interpretation of experiments with cathode rays. Numerical modeling of electromagnetic electron structure shows that the initial state such as a spherical shell is unstable and disintegrates into a pair of nonlinear waves that leave the system with the speed of light. In the decay of the initial state concentrated in the neighborhood of the origin, waves of complex part of potential disappear with time, but a real part of the potential it tends to equilibrium
1119 kb

SUPERGRAVITY IN 112D

abstract 1171603082 issue 117 pp. 1266 – 1287 31.03.2016 ru 386
In the study we consider the problem of determining the motion and similarity parameter to the system of worlds in a Riemannian space 112D with a common field of gravity. Centrally symmetric metric, depending on the 110 angle coordinates and the radial coordinate and time was investigated. It is assumed that there are intelligent beings in every world, striving for self-knowledge. By virtue of the presence of the world hierarchy in one of them there is a system of complete identification of each characteristic of the individual being with macroparameters his world. If sentient beings in all the world to create a device to simulate their own history in the form of a network of computers using the available material and the physical laws of his world, and the loss of information when displaying one world to another is 1%, then 37- th world played only 68.9449%. For Earthlings, it was found that the average similarity parameter of professional group in recognition by using astronomical parameters is 68.75%. Therefore, we can assume that the world system, including Earth, contains 37 "floors." Assuming that each "floor" takes three space dimensions, and all the "floors" connected by a single time, we find here that the number of dimensions of space-time of the whole system is 112. In the article the angular motion in a Riemannian space is considered. The effect of the separate worlds on other worlds is simulated. It has been shown that the physical laws in all worlds represent a single movement covering the markers in the form of the motion of atoms and elementary particles in a gravitational field in the 112D
481 kb

ON THE NUMERATIONS OF THE FINITE PARTIALLY ORDERED SETS

abstract 1181604006 issue 118 pp. 113 – 127 29.04.2016 ru 835
There is a widely known problem regarding the ordering of the partially ordered sets (Linear Ordering Problem). It boils down to finding the numerations of such sets. The main result of this article is a generalization of one of the known S. S. Kislitsyn's results about finding the number of numerations of finite partially ordered sets
271 kb

PROFESSIONAL STANDARDS, INFORMATION AND COMMUNICATION TECHNOLOGIES AND MANAGEMENT IN AEROSPACE INDUSTRY

abstract 1181604016 issue 118 pp. 305 – 332 29.04.2016 ru 761
We should have trained staff to implement innovative strategies. Therefore, it is natural, that a lot of attention is paid to the staffing of the management processes of innovative activity at the enterprises of the rocket and space industry (RCP). Training and human resources management in accordance with current legislation should be based on professional standards. The content of professional standards should reflect the results of forecasting scientific and technical progress in the field, for example, in the RCP. It is necessary to forecast trends in the use of information and communication technologies in solving management problems in the socio-economic sphere in order to reflect these developments in professional standards. The approach to solving this problem is the subject of this article. What should the professional standard be like in the RCP? The main problem lies in the fact that although the standard is to be enacted in the near future, its actual impact on the industry will start in 5 - 10 years and will continue for at least another 10 years, ie, until the 2030s. Professional standards should come from "Education through Science" concept, ie, knowledge, skills, competences, provided by a professional standard, should be based on modern scientific achievements. For example, mathematical methods of research should be based on a new paradigm in the area of knowledge and statistical data analysis methods must meet high statistical techniques. For the development of professional standards in the field of the RCP it is necessary to predict the characteristics of the qualification (level of knowledge, skills and experience) required the employee to carry out professional activities in the RCP in 2020 - 2030. Modern information and communication technologies are creating a fundamentally new situation in the organization of the economy. We have an ability to manage the work of organizational units, scattered throughout the world, from a single center. The requirement of presence in the workplace is mainly a relic of the past. We have a lot of advantages in a remote work
162 kb

ON THE NUMERATIONS OF THE FINITE PARTIALLY ORDERED SETS

abstract 1181604047 issue 118 pp. 805 – 816 29.04.2016 ru 905
In this article, we discuss various issues related to the formulas approximating the distribution function of prime numbers pi(x). This question has occupied many scholars, but the exact function is well approximated function pi(x) over the number of positive integers not. Based on certain hypotheses, we present a new function s(x) is very well approximated pi(x). The above article hypotheses are so important that their numerical validation and refinement for the lengths of the segments more in 1014 - one of the main areas related to the problem of approximation of the function pi(x) throughout the series of natural numbers. After analyzing the behaviors and constructs many functions, we are building the basis of the function s(x), which is well approximates the function pi(x) throughout the series of natural numbers. We also present a table of values for x, less or equal 1022 for the difference of s(x) - pi(x)
385 kb

THEORY OF PHYSICAL CONSTANTS AND SUPERGRAVITY IN 112D

abstract 1181604078 issue 118 pp. 1223 – 1245 29.04.2016 ru 408
In this article we discuss a version of the metric theory of the fundamental interactions in which it is assumed that the physical constants due to the presence of extra dimensions of space-time. The estimation of the number of physical constants based on the theory of supergravity in 112D is that the minimum number of constants is equal to 222, and the maximum number - 1404928. At present, the number of parameters that characterize the elementary particles, isotopes and chemical elements is about 150920. This number is 9.3 less than the maximum possible number of parameters that indicate still great potential of modern science. Functions describing the area and volume of a unit hypersphere, embedded in a Riemannian space of arbitrary dimension, were used to find the fundamental physical constants. A satisfactory agreement with a relative error of 0.03% calculated and experimental values of the fine structure constant found out. For the ratio of the average mass of a nucleon to the electron mass is obtained coincidence with the experimental value with an accuracy of 0.002%. The proposed theory of physical constants different from that Bartini theory that established the optimal dimension of the space is a hypersphere 5 and 7, rather than 6 as in Bartini theory. The problems of the compactification of extra dimensions in describing the motion in fourdimensional space-time are discussed
217 kb

A NUMERICAL ALGORITHM IN THE PROBLEM OF SELF-ORGANIZATION OF LABOR RESOURCES

abstract 1181604086 issue 118 pp. 1333 – 1349 29.04.2016 ru 651
In this article, there is a numerical method of solving the problem of self-organization of the labor resources. The problem deals with finding probabilities of hiring and the layoffs of specialists from the sectors of the labor market. A mathematical model of labor resources dynamics is used to solve this problem. The initial problem is incorrect, because number of equations of the descriptive system is less than number of unknown variables. A special algorithm is designed for guaranteed finding the normal solution in finite number of iterations. The algorithm is separated into two key stages. Initially, unconditional normal solution of the problem is found by applying the modified method of Gauss for underdetermined systems. Later, this solution is projected in the subspace of permissible values. After that, the normal solution of the problem with consideration of non-negativity of the desired values is being found by using the gradient projection method. The proposed algorithm has been successfully used to develop application in programming environment C++. This application is focused on solving of the problem of selforganization of the labor resources. Comparative analysis of speed of the application and add-ins MS Excel "Solver" showed that the same problem is solved much faster in the application designed by the author than in a table processor MS Excel when using the add-in "Solver". This demonstrates the high efficiency of the proposed method
403 kb

PHYSICAL MECHANISMS OF TURBULENT VISCOSITY AND SIMULATION OF TURBULENCE ON THE NAVIER-STOKES EQUATIONS

abstract 1181604096 issue 118 pp. 1469 – 1487 29.04.2016 ru 357
The article deals with the solution of the NavierStokes equations describing turbulent flows over rough surfaces. It is known, that there is a mechanism of turbulent mixing in natural systems, leading to an increase in the viscosity of the continuous medium. In this regard, we suggest methods of regularization of the Navier-Stokes equations, similar to the natural mechanisms of mixing. It is shown, that in threedimensional flows over a rough surface turbulent viscosity increases proportionally to the square of the distance from the wall. The models of the flow, taking into account the properties of the turbulent environment are considered. A modification of the continuity equation taking into account the limiting magnitude of pressure fluctuations is proposed. It is shown, that due to the pressure pulsation, the incompressibility condition may be violated even for flows with low Mach numbers. Modification of the continuity equation taking into account turbulent fluctuations leads to a system of nonlinear equations of parabolic type. Modification of continuity equation in the system of Navier-Stokes by the introduction of turbulent viscosity allows the regularization of the Navier-Stokes equations to solve the problems with rapidly changing dynamic parameters. The main result of which is obtained by numerical simulation of the modified system of equations is the stability of the numerical algorithm at a large Reynolds number, which can be explained, first, a system of parabolic type, and a large quantity of turbulent viscosity. A numerical model of flow around plates with the rapid change in angle of attack has been verified. We have discovered the type of instability of the turbulent boundary layer associated with the rapid changes in dynamic parameters. It is shown, that the fluctuations of the boundary layer to cause generation of sound at a frequency of 100 Hz to 1 kHz
224 kb

AN ALGORITHM AND A PROGRAM FOR CALCULATING THE NUMBER OF COMBINATIONS FOR LARGE NUMBERS WITHOUT CALCULATING THE INTERMEDIATE FACTORIALS BY THEIR DECOMPOSITION INTO PRIME FACTORS AND ABBREVIATIONS

abstract 1181604110 issue 118 pp. 1662 – 1671 29.04.2016 ru 842
Classical combinatorial formula to calculate the number of combinations from n on m: C(n,m)=n!/(m!(nm)!) involves the intermediate calculation of factorials, which is often impossible when n>170, due to limitations in the capacity of numbers that are used in programming languages and created through these systems. However, in some cases it is necessary to calculate the number of combinations for n and m much larger than this limit, such as when a value greater than 10000. In such cases, there is a definite problem, which manifests itself, for example in the fact that many on-line services meant to calculate the number of combinations with these parameters do not work properly. In this article, we present its solution in the form of an algorithm and software implementation. The essence of the approach is to first decompose the factorials into prime factors and reduce them, and then to produce multiplication. This approach differs from those cited in the Internet
ßíäåêñ.Ìåòðèêà