Vol 11, No 5 (2011)
PHYSICAL AND MATHEMATICAL SCIENCES
603-612 338
Abstract
The plastic deformation evolution at the crack tip in ?-Fe crystal under the condition of the plane deformation (modes I, II) is calculated. Temporal distributions for the plastic deformation, effective shear stress, stress intensity factor are derived. The calculation results for the blunt and acute crack tips are compared.
613-620 292
Abstract
A mathematical model is offered for the analysis of complex stress-strain state of the layer load-carrying structures of the aircraft planes. It is presented as sets of the equations of the constraining relations of load parameters, voltages and deformation. The complex multilayered solution method that allows including specific features of the design geometry and behaviour of structural materials through multifactor loading is used for the solution of the systems of the equations.
TECHNICAL SCIENCES
621-629 292
Abstract
A quantitative assessment of the accuracy for determining the mechanical moment of the induction motor when using T equivalent circuit with skin effect in rotor bars compared with L equivalent circuit has been conducted.
630-632 379
Abstract
A genetic algorithm for solving the optimization problem of stores shipment is developed. The algorithm permits to find a good approximate solution, and it has acceptable computational complexity.
633-643 399
Abstract
The problem of 2D-distribution of biopolymers by the IEF in the rectangular electrolytic cell with the immobilized pH-gradient is solved. The computer program created on the base of FreeFem++ permits to investigate temporally the IEF-process and to model and optimize a real experiment.
644-654 383
Abstract
A hypothesis of experimental tribothermodynamics had been suggested and proved. The hypothesis permits to define flash temperature on the true contact area as a practical example.
655-666 379
Abstract
An effective algorithm of constructing optimal solutions to homogeneous allocation problems is developed. It is called a biextremal solution algorithm because it permits to find the distribution carrying an extremum to two popular distribution evaluations simultaneously: uniformity of distribution criterion and minimax criterion. The principle of its operation consists in formalizing structure transformation of the core-image matrix derived by Romanovsky’s algorithm with further formalized rearrangement of tasks between their executors. An example of incremental solution to the particular problem is provided.
667-675 391
Abstract
The possibility of reducing vibration of the ultralight coaxial helicopter blades on the through harmonic wave by mounting blades on the optimal azimuth is shown. The methods of the aerodynamic calculation of rotors and the calculation results for the horizontal flight of “Rotorfly” helicopter are offered. The optimal azimuth of blades intersection is defined as 37.5 degrees angle along the direction of the upper rotor rotation.
676-682 274
Abstract
The application technique of computer graphics for processing the experimental data in the mode of real time is presented. The data are received in the research practice of modern material science.
683-687 298
Abstract
The estimation method for the basic dynamic radial bearing capacity, the dynamic equivalent radial load and the specified endurance of the integrated cone rolling-contact bearings of the 2K-V planetary pin-tooth gear with the off-centroid internal pin-tooth gear on the second stage is presented. These bearings are applicable in case where no standard cone rolling bearings can be used due to the dimensional specifications of the device.
688-697 272
Abstract
Analysis problems of rotor imbalance from its peripheral working parts (hummers, knives, etc.) installation and the specified synthesis of its inertia symmetrical (balanced) structure are considered and formalized for the computing.
698-705 405
Abstract
Probability-theoretical models of the unit contacting process of abrasive granules and the workpiece surface, of the removal of metal and forming the quality of the surface coating while processing profiled surfaces by loose abrasives are calculated. Regularities of forming velocity and stress fields of the granulated abrasive media under the direct computerized modeling are specified. A design technique for processing profiled parts is worked out. The technique permits to provide minimum time of processing due to the rational choice of operating environment characteristics and operating modes.
706-714 350
Abstract
A mathematical model of the load of the ground impulsive energy source is presented. It permits to choose parameters of the basic elements of its construction diagram under the soil effect with surpassing the elastic limit.
715-722 384
Abstract
The optimum problem of the allocation of tasks for executing in the cluster is considered. Task control algorithms are elaborated. The algorithms validation is done in the performance of the transportation problem on the local network cluster. The data obtained permit to judge efficiency of the suggested algorithms.
723-729 395
Abstract
The tasks of heterogeneous work distribution among heterogeneous executors taking into account operation and switching process costs are investigated. Genetic algorithms of work distribution that can be used for solving various practical tasks both in the automated processes and in social systems are offered.
SOCIAL SCINCES
730-737 357
Abstract
The application of control methods of consumer behavior is considered. The consumer response to the producers’ promotion instruments is analyzed. Efficiency of various methods of consumer behavior research in the tobacco sphere is investigated. The list of the basic instruments for promoting tobacco production and passing the information to the end-consumer is made.
738-742 317
Abstract
The concept of damage ensuing in the production and use of the building materials, and during damaging contacting throughout the life cycle of the building components is described. Calculations of the emissions of harmful substances, in particular carbon dioxide, are resulted. The damage evaluation is given in value terms.
743-748 413
Abstract
Various concepts of the bank credit portfolio are analyzed and contrasted. The definition that permits to structure the credit portfolio is given. The existing techniques of its assessment formalized in legislation and used now in the Russian Federation are considered in detail. The necessity of the double estimation of the credit portfolio with the aim of accounting and controlling is derived.
749-757 284
Abstract
Advice on the competitive strategies choice by the food retailers subject to their strategic competitive position is provided.
758-767 348
Abstract
The conceptual framework of commercialization in the market system is revealed. The essence of the innovation business in the regulation of the commercial innovative activities is analyzed. The main problems of the innovative entrepreneurship are observed.
768-775 411
Abstract
Customer-oriented CRM strategy integration in the customary marketing instruments of the consumer loyalty management is tried out. A consistent positive effect that fosters customer centricity of a brand and helps manufacturers in achieving strategic goals is derived.
CONCISE INFORMATION
776-778 399
Abstract
The urgency and application of the single-type modular robots is considered. The kinematical model-based program of such robot movement visualization is worked out. The obtained results can be used for the development of the intelligent manipulation of the robot movement.
ISSN 2687-1653 (Online)
