Search Results - Don State Technical University

Results of research of properties of the polycomponental powder materials formed of separate components in factorial space of "mixing - property" on the flat simplex diagram are submitted. Thus on the basis of the general principles of construction of information-analytical system (IAS) th...

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The classification of Yangian irreducible finite-dimensional representations of Lie superalgebra sl(1,2) – Hopf superalgebra is obtained. The classification is of great use in modern theoretical and mathematical physics. Some feasible applications of this result in mathematical physics are offered....

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The need to formulate accurate requirements for the training organizations engaged in training the service personnel for passenger ropeways (PRW), and pre-certification training on the industrial safety of the ropeways is identified. “A model PRW employee” is presented. It reflects the skills and pr...

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Introduction. Any metal-cutting machine has errors of the executive elements movement depending on its geometric accuracy and state. These errors change the forming motions indirectly, through their transformation by the dynamic cutting system with account for the elastic deformations of the tool an...

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Authors give the solution of linear discrete difference equation of infinite order, in the sequences space., They propose description of correspondence difference operators in the classes of infinite matrix operators.

Introduction. Currently, the production and consumption of the electrical energy is constantly growing. One of the solutions to energy and environmental problems in Russia is harnessing of renewable resources, in particular, distributed-type solar-wind power plants. To reduce the generated electric...

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The effect of the composite activating coating based on the halide salts upon the weld geometry under gas-shielded welding by the reverse polarity current has been investigated. The dependence of the fusion penetration on the electrode wire coating is found out.

In the paper method for solving the direct problem for a differential equation of second order with variable coefficients is presented. This equation arises in the analysis of longitudinal oscillations of rods of variable rigidity on the basis of difference schemes. The way of determination of the l...

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Hand in hand with the  integration increase of the up-to-date radio electronic equipment (REE) there grows substantially its design complexity, which is associated with an increase in the dimension of the problems solved   in the development process. The application of SAD SolidWorks is an effective...

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The results of DFT research on the band structure of zigzag graphene nanoribbons N-ZGNR/h-BN(0001) with ferro- and antiferromagnetic ordering are presented. It is suitable as a potential base for new materials for spintronics. Equilibrium parameters of the graphene nanoribbon atomic structure and bo...

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Kinetics of aluminium spreading on nikel for brazing condithions is studied. Wetting and flowing (spreading) of aluminium on nickel are investigated. Aluminium is wetted nickel well and flowed limitedly. Flowing of aluminium on nickel is activated process. This process includes some stages. Energy o...

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Introduction. The possibility of automated checking the works of participants of the Olympiads in programming is considered. The architecture and operation of the server part of the check system of performing the Olympiad programming tasks is described. Materials and Methods. The technologies of MyS...

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The work objective is to study a critical traveling salesman problem which is NP complicated task of the discrete optimization. It is shown that only heuristics is appropriate in achieving this goal. The result of the ant colony algorithm (ACA) and genetic algorithm (GA) sharing is presented for the...

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Introduction. Algorithms for the parallel binary tree construction are developed. The algorithms are based on sorting and described in a constructive form. For the Nelement set, the time complexity has T(R) = O(1) and T(R) = O(log2 N) estimates, where R = (N2-N)/2 is the number of processors. The tr...

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The work objectives are to generalize the scalarization method of dynamic elastic fields in the transversely isotropic media to the tasks for the environments rotating with a constant angular velocity, and to develop the methodological apparatus for describing the effect of rotation on the parameter...

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Introduction. Schedules of classes and exams are crucial components in the training process organization. Their quality directly affects the successful mastering of learning materials and ensures physical and psychological health of the educational process participants. The influence of educational...

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The results of the theoretical and experimental research of the original synchronized dualchambered hydromechanical system with indirect regulated valve systems of different structural configuration are shown.

The inadmissibility of the comparison and cooperative processing of the conditional probabilities calculated with the use of the known variations of Bayes formula considering a well-defined amount of the accumulated evidences is established. This statement is justified as follows. Due to the unequal...

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Introduction. Nowadays, vacuum-type dough dividers are used in industries with a production volume of up to 4,000 loaves per day. In the dough divider operation, due to wear of the working surfaces of the piston, chamber, and drum, the gap between them goes beyond the value equal to 50 microns, whic...

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The basic methodological-theoretic approaches to the identification of the regional economic clusters are analyzed. The limits of their applicability under the Russian conditions are specified.