Vol 15, No 1 (2014)

An informative attribute selection problem is considered. The problem is solved with the hybrid self-adjusted evolutionary algorithm. The algorithm is used as an optimization method of bandwidth parameters in kernel regression. The algorithm is experimented on the test function with various dimensions. Reliability depends on the dimension function which is also presented. The results of the hybrid self-adjusted algorithm are presented too.

The problem of the compact high-throughput cryptoprocessor design is considered. This problem solution based on the Finite State Machine model is offered. Zakrevskij's Cipher Based on Reconfigurable FSM is chosen as a representative of the finite automata ciphers class. FPGA Xilinx Spartan-3 hardware implementation of this cipher is presented. Values of the hardware resource using and throughput of this implementation are given. The FPGA implementation comparison of Zakrevskij's Cipher Based on Reconfigurable FSM, block cipher AES and hardware-oriented stream ciphers became eSTREAM competition finalists was made. The conclusion about Zakrevskij's Cipher Based on Reconfigurable FSM practice using possibility is made.

An algorithm for estimating the quality of classification is proposed. The task is considered in case of absence of the information about the classes in reality (no training sample). The algorithm is based on modeling of the sample that will be the most similar to the real data. Thus, the actual problem of classification quality evaluation is solved on the basis of the adequate models. Classification was carried out on the data of transistors quality. The task of diagnostics (estimation of quality) of various electronic, electromechanical and electromagnetic components (EEE components) is considered. The principle of EEE research with modeling method is formulated. The modeling of classification process is performed under the conditions which are close to real. The results of numerical researches are in the article. The results allow to hope that application of the proposed algorithm to automatically classification of EEE will be effective.

An algorithm for computing the diameter, the average diameter and the growth function of the Cayley graph of a finite group given a fixed set of generators is presented. The correctness of the algorithm is proved. After that a parallel version of the algorithm for study of the Cayley graphs ofpermutation groups is presented. This algorithm can be useful in the design of the topology of a multiprocessor computing system (MCS). In this case the model of MCS will be presented as the Cayley graph in which the processors are the vertices of the graph and the edges correspond to physical connections between processors. Using of this algorithm allows us to study the characteristics of the Cayley graph to evaluate the performance of MCS.

In the article the task is set to consider the issue of the prospects of using planned languages for different purposes as interlinguas between different nationalities and, first of all, as the natural language modeling languages. An experiment about the usage of conlangs as languages of non-terminal symbols of Chomsky’s generative grammars is described. The analysis is offered on the topic of planned languages based on interlinguistic approach, referred to studying international artificial languages as means of overcoming language barrier. A conclusion is made that the international communication with the help of planned languages can be applied not only as an art form, hobby and tools for modeling and analy-ing natural languages, but also particularly for natural language generation, executing linguistic transformations and as a generative grammar non-terminal symbols language.

Deformation, buckling and modal analysis of shear flexible clamped beam are considered. Analysis is fulfilled by Ritz method. The bending deflection of a beam is approximated by the first beam function. The results of calculation are compared to the original finite element solution in which transverse shear strain is appointed as the basic cinematic variable. The admissibility of approximate solution by Ritz method for analysis of composite beams and sandwich beams with rather high stiffness of score is shown.

In this study a multi-agent evolutionary strategies algorithms system is considered in application to linear dynamic system identification problem solving. The proposed approach is based on previous results of designing the universal simultaneous parameters and structure identification technique that uses the observations of system output and input. Every agent is model-based and has an aim to find an extremum for agent’s criterion. The solution of the problem is symbolic and can be automatically found for the small samples and noised data.

This paper is devoted to the study of the relationships between classes of groups with finiteness conditions. Finiteness conditions superimpose limitations on a number of elements of a certain order in a group, on the order of its elements and on the cardinality of conjugate classes. The paper provides examples of groups that share class of almost layer-finite groups and those close to that class of groups: layer-finite groups, periodic groups, Chernikov’s groups, locally normal groups and the groups with the finite classes of conjugate elements. We establish the properties of the relationships of the considered classes of groups. In particular, we prove the coincidence of the classes of almost layer-finite groups and Chernikov’s groups in the class of primary groups. Our results will be used in the study of infinite groups with finiteness conditions.

The problem of the active system modeling is researched. There are three sources of information to construct the models. The first source is the theory of the problem, the second one is experts in the field ofproblem, and the third one is data bases. The method considered in this article uses the third way. The nonparametric algorithm for modeling active element in the system is proposed. The results of the computer experiments are published.

The problem of curvilinear fibers rational reinforcement is solved by reference to the structural model within the heterogeneous liner elasticity problem. Traction of a three-layered reinforced disc under the centrifugal force action in the polar coordinate system is considered. The resolving system of ordinary differential equations in radial and peripheral movement components for the axisymmetric problem definition is obtained. The effect of structural parameters for a construction limit stressing is studied. It is approved that by reinforcement structure choosing the extreme speed of a disc rotation can be increases twofold.

The article describes a scenario of many events on 30 June 1908, commonly called Tunguska catastrophe and related to the explosion of a space body in the Earth’s atmosphere. This scenario is not the same as the most common versions of these events, but it can explain the diverse range of phenomena that occurred in the vast area from Western Europe to Eastern Siberia. The rationale for this scenario is based on factual data collected and classified during decades by selfless researchers of Tunguska events. In this paper the only scheme of justification is presented that based on the physical phenomena known from university textbooks. A more detailed explanation and verification of each effect will be carried out in the further papers by careful comparison with the factual material accumulated during decades.

This article is dedicated to a theoretical analysis of the influence of geometrical and mechanical parameters of the direct action flow regulator used in LRE on its static and dynamic characteristics. The investigation was conducted using a lumped-parameter mathematical model. It was showed, that the region dependently of the pressure drop in flow regulator, which the static characteristic is positive, is expanded when using the triangular geometry for the orifices of regulation, which is very important, specially, for multi-regimes LRE. For this geometric form orifice, the hydraulic force, which depends of the flow rate and the pressure drop in these orifices, and the thickness of the slide valve, have less influence in the positive behavior of the static characteristic of the regulator. The dynamic characteristics of the flow regulator, calculated in the technical system, are widely defined by the area of the piston and the area of the damping orifices.

This paper presents the changing dependence of the required weight and required cost in the specific characteristics of microsatellite power supply system for the Earth remote sensing from the deployment angles of non-oriented solar panels for the different orbital parameters (orbital altitude and local transit time of orbit ascending node, which is determined by the angle between the orbit plane and the direction to the Sun). The obtained results make it possible to estimate the change ofpower supply system specific weight and specific cost for different deployment angles of the solar panels and determine the most rational geometry of photovoltaic batteries.

Tightness is one of the most important factors of safety, efficiency and persistence in the rocket and space technology. Mass spectrometer leak detection method is mostly used in the spacecraft production. This article describes the possibility of increasing the sensitivity of the method of leak test of rocket and space technology using helium mass spectrometer leak detectors. Theoretical formulation of the problem on the spatial positioning of the source of leaks from the values of the projections of the concentration gradient in a test environment in a specially prepared area of the object is explored. Concentration field of leak will be concentric semicircles when there are no any incoming flows in testing area. If concentration field is known, it is possible to solve the problem of localization of leaks with the gradient of this field. This article has covered mathematical model of the concentration field and localization leaks algorithm. Problems and prospects of the proposed method are evaluated.

Thermovacuum tests are an important component for preflight of spacecrafts working off. Control system of heat fluxes at thermovacuum tests with quantity of control points up to 750 and operating influences up to 380 (channels) is reported. This system provides the analysis of emergency situations and automatic control of testing algorithm, as well as, supports the temperature of article various points in the range from -150 up to +150°C. Algorithm for automatic obtaining specified temperature distribution is presented. Results ofpilot tests of algorithm testify to its working capacity.

Vibrating samp/e magnetometer to study the static magnetic properties of various solid samples in magnetic fields up to ±25 kOe is described. The source of the magnetic fie/d is an electromagnet designed by I. M. Puzey. The temperature of the investigated sample varies from 77-370 K by flow cryostat. Magnetic measurements were performed by the direct method. Mechanical vibrations of the sample are created by a vibrator of the original design. The relative instability of the oscillation amplitude is 10 -4, and frequency - 10 -5. Registration of useful signal is carried out by the system consisting of four pickup coils. The vibrating sample magnetometer allows to receive the magnetic-field, temperature and angular dependencies of the magnetic moment. The dynamic range of the device is 510 -6-100 emu.

Algorithmic support of the automatic control system actuators is considered. The structure of the program for control servo with computer is proposed. Also a flowchart procedure for moving the actuator is presented. Research stand for testing and debugging of automatic control system is created. The proposed control system of actuators is tested using the stand. The accuracy of the angular position of the drives is checked. Thus, the task of creating a system of automatic control servo is posed and solved. You can use obtained results in the development of control systems of manipulators which include servos.

The technique of plasma spraying of coating ferrite powders sintered ferrite products is offered. The influence of technological factors spraying and fractional composition of the morphology, structural change , chemical composition and magnetic properties of the coatings is researched. It is found that the loss of oxygen in the ferrite during plasma spraying determined fractional composition of the starting powder, originally used gas, heating temperature and residence time of the particles in the plasma jet, oxygen diffusion coefficient. Increase in the fraction of the spray powders stabilizes the chemical composition of the coatings. Introduction into the plasma jet process gas oxygen (1-3 %), even at high power deposition stabilizes the chemical composition of the coating with respect to oxygen. Radiographic studies have established that in the coating material occurs a small amount of amorphous phase. Plasma deposition technology allows to combine the coating operation , and by controlling the annealing temperature in the spot deposition process gas flow rate and oxygen, which provides the chemical composition and microstructure of the coatings with the required level of magnetic properties.

Investigations of chemical processes in the formation of coatings by microarc processing silicate alkaline electrolyte are considered. The results of experimental studies to determine the composition and corrosion resistance of oxide coatings on aluminum alloys are shown. Technological processing modes in which to form a coating with high alumina content are defined. It has been established that the coatings exhibit a high corrosion resistance in aggressive environments compared with coatings obtained by electroplating. The dependence of the corrosion resistance in aggressive environments on the chemical composition is shown.

Authors have studied the question of innovative potential role for the Russian Federation defense industry enterprises. The actions carried out by the government for the development of the defense industry innovative potential are defined. The essence analysis of the definitions “potential”, “innovation” and “innovative potential” is carried out. Criteria which “innovation” for the purpose of application in production has to possess are allocated. The concept of the defense industry innovative potential which components will allow to characterize current state, threats and prospects of further development is offered.

In the modern Russian economics military-industrial enterprises are known as high-precision production in scientifically advanced technical sphere and it allows to produce competitive goods. Production of civilian goods plays an important role in ensuring the defense industry. In this regard the new requirements of organization, maintenance and management tools are needed. One of these tools is monitoring. The factors influencing the effectiveness ofproduction of innovative civilian goods on the enterprises of the defense-industrial complex are identified and systematized in this article. The features of production of civilian goods are analyzed and it allowes to develop a technique of monitoring the civilian production on the enterprise of the defense- industrial complex.

The series offailures in the space industry, which is one of Russian defense potential key elements, indicates a number ofproblems in it. The fact that the industry is significant for the effective development of the innovative industry in Russia is identified the relevance of the research. The article analyzes the dynamics and structure of industry funding over the last 20 years, the policy of reforming of the military-industrial complex, which has influenced the development of the industry. The dynamics of space launches and changes in Russian share of the market for launching spacecraft is shown in the article. On the basis of researches the importance of the conservative direction of the development of the industry in Russia is shown. The factors that allowed Russian Space Industry (RSI) to succeed in the last decade compared with the level of the 90s and the basic problems pursuing RSI since the 90s are determined.

It is offered to classify returnable material resources for the purpose of their reuse in industrial system of the enterprise. The criterion of transition to work with secondary raw materials (waste) is defined. It is entered, for Open Company "Machine works", system of technical and economic indicators of occurrence and processing of industrial wastes which is coordinated with the balanced system of indicators standard at the enterprise. For motivation of the participants of the logistical system the developed procedure of a personal rating which is appropriate for any worker in dynamics on the monthly periods or for a certain interval of time as the average size is used. It is offered to build a complete system from the local contours concerning different levels of management that allows providing necessary and sufficient quality of accepted logistical decisions. The decision of the described problems should be made in a local contour of the reverse logistics management.

The given article shows the necessity and possibility of implementing adaptive - innovative management business organizations activities. The factors of business environment of Krasnoyarsk region, Krasnoyarsk on the basis of statistical and analytical information are studied. Developed organizational and economic mechanism of adaptive-innovation management through the development of adaptive behavior of business structure is proposed. The relationship and interdependence of development potentials of business structures with the release of the dominant innovation capacity is modeled. The possibility of calculating the integration potential of the organization on the basis of specific indicators is studied.