Vol 13, No 4 (2012)
- Year: 2012
- Articles: 52
- URL: https://journals.eco-vector.com/2712-8970/issue/view/7699
Articles
4-7
SIMULATION OF SYSTEMS WITH ESSENTIAL NONLINEARITY WITH THE HELP OF PARALLEL PROGRAMMING
Abstract
The authors suggest a new approach to EDA-systems designed to simulate circuits containing elements, functioning of which is related with abrupt change of parameters and in the process of mathematical description leads to substantial increase of derivatives of state variables, that in the process of traditional modeling leads to breakdown of the computational process.
Siberian Aerospace Journal. 2012;13(4):7-10
7-10
ASSESSMENT OF TENACITY OF HYDRO-TURBINE LID FIXTURE IN A CASE OF EMERGENCY
Abstract
The author considers the existing approaches to quantitative assessment of technical system structures. The results analysis of tenacity of detachable connection of hydro-turbine lid in a case of emergency, at progressive failure of load-carrying elements, are presented. The indexes of tenacity versus the number of failed elements are defined, on the basis of stress-strain state modeling.
Siberian Aerospace Journal. 2012;13(4):10-14
10-14
14-17
LOCAL DERIVATIONS AND LOCAL AUTOMORPHISMS OF NILPOTENT ALGEBRAS OF MATRICES OF SMALL ORDERS
Abstract
Let K be associative and commutative ring with identity. In the article we study local derivations and local automorphisms of algebra R of lower niltriangular n×n matrices over K and associated with R of Lie algebra. Their descriptions are completed under n = 3 and when K is a field, under n = 4.
Siberian Aerospace Journal. 2012;13(4):17-22
17-22
22-25
DISCHARGE CHARACTERISTICS OF LITHIUM-ION ACCUMULATORS WITH CARBON ELECTRODES
Abstract
Lithium-ion accumulators in which fulleride-lithium composite films of hexagonal graphite and turbostratic graphite (TG) plates were used as negative electrodes are the subject for research, described in the article. The metallic lithium plates were used as positive electrodes in all the accumulators. Wile using turbostratic graphite as anode, the maximum value of discharge current was observed, which 1,5 times excided the maximum current for hexagonal graphite. By results of X-ray photoelectron spectroscopy it was determined that the thickness of active layer (the layer of anode which was intercalated lithium ions) for turbostratic graphite was 600 nm. The maximum value of the specific capacity was observed underthe use of turbostratic graphite as anode and came up to 244 mA•h/g.
Siberian Aerospace Journal. 2012;13(4):25-28
25-28
PRINCIPLES OF COMPRESSION AND DECOMPRESSION WITHIN THE FROME OF MULTIDIMENSIONAL ANGUAGE REPRESENTATION APPLIED TO EDUCATIONAL TASKS GENERATION
Abstract
In the given work the problem of semantic decompression patterns addition to the meaningful sentences generated as functions in multidimensional vector space of the notions of the natural language is considered. The model of adding semantic decompression patterns based on stylistically-oriented sets of generative grammar rules is offered. The complexity of natural language translation problem is discussed. The considered model provides the algorithm of adding semantic decompression patterns that can be used for improving the performance of educational tasks generation software.
Siberian Aerospace Journal. 2012;13(4):28-34
28-34
34-37
CONNECTION OF GROUND STATE SPIN OF FERREDOXIN ACTIVE CENTER POINT Fe 2S 2 ON LIGANDS ORIENTATION
Abstract
The article considers oxidized state of the cluster [2Fe-2S-4(SCH 3)] 2-, which is an analog of active center point in ferredoxin proteins, in the framework of DFT and reveals probability of non-adiabatic spin-inhibited junctions between the cluster conformers in singlet and triplet states. Junction structures obtained can be used for study of reaction mechanism of the cluster with a confluent spin states.
Siberian Aerospace Journal. 2012;13(4):37-42
37-42
LOADING DEVICE OF RECUPERATION TYPE WITH IMPROVED DYNAMIC CHARACTERISTICS
Abstract
Simulation model of loading device of recuperation type with improved dynamic characteristics for Micro-CAP program has been developed. Research of characteristics of loading device of recuperation type with cascade connection of impulse and continuous current regulators is performed and described in the article.
Siberian Aerospace Journal. 2012;13(4):42-46
42-46
RESEARCH OF KINEMATICS OF MANIPULATOR WITH PARALLEL STRUCTURE (DELTA MECHANISM)
Abstract
The article considers kinematics of manipulator with parallel structure. Direct kinematic problem of manipulator solved analytically. The obtained solution verified with the help of three-dimensional simulation of the mechanism. Limit positions of the manipulator and operating are zone are defined.
Siberian Aerospace Journal. 2012;13(4):46-50
46-50
MODEL-ALGORITHMIC SUPPORT OF MULTILINGUAL INFORMATION-TERMINOLOGICAL BASIS IN INTELLIGENT SYSTEMS
Abstract
The authors consider formation of multilingual information-terminological basis and the model of its study based on Markovian chains. The algorithm of decomposition of informational basis into modules, according to relevance principle, is presented.
Siberian Aerospace Journal. 2012;13(4):50-53
50-53
53-56
56-61
EXEPTIONALY LARGE ABELIAN UNIPOTENT SUBGROUPS IN GROUPS OF LIE TYPE
Abstract
Let G be a group of Lie type over a finite field K and let U be its unipotent subgroup. In the connectoin to the problem of description of large abelian subgroups in the group U of eXceptional type, we discover large abelian subgroups in the group U of type 2Е 6, which are not G-ajoint to a normal subgroup in U. Some results on the Thopson subgroup are revised.
Siberian Aerospace Journal. 2012;13(4):61-64
61-64
64-70
70-78
DEVELOPMENT AND INVESTIGATION OF THE EFFECTIVENESS OF THE PARTICLE SWARM OPTIMIZATION ALGORITHM
Abstract
This article deals with investigation of the effectiveness of the Particle Swarm Optimization (PSO) [1] algorithm for solving constrained and unconstrained one- and multi-criteria optimization problems. Besides the investigations were conducted both the standard and the binary PSO. Also parallelized modifications of these algorithms were developed for multi-processor operations and two real-world problems were solved.
Siberian Aerospace Journal. 2012;13(4):78
78
EVOLUTIONARY ALGORITHM FOR AUTOMATIC GENERATION OF NEURAL NETWORK BASED NOISE SUPPRESSION SYSTEMS
Abstract
We propose using neural network technology to noise suppress in information signals. Neural networks are automatically generated and adjusted with an evolutionary algorithm. It is shown that the evolutionary algorithm provides a reliable noise suppress system.
Siberian Aerospace Journal. 2012;13(4):79-82
79-82
ABOUT MULTIAGENT SYSTEM APPLICATIONS FOR SPEECH RECOGNITION PROBLEM
Abstract
In this paper we suggest two different multi agent systems for speech recognition problem. The multi agent systems (MAS) are becoming very popular because of their flexibility and applicability to complex problems. The system is based on functioning of different agents that forms the system and interacts with each other. The main profit of using multi agent approach is that every agent can be described as a simple subsystem and the whole initial task can be solved with automatic and autonomous agent actions, interactions and decision making. So the main problem can be reduced to behavior rule base tuning.
Siberian Aerospace Journal. 2012;13(4):82-85
82-85
AUTOMATIC LINEAR DIFFERENTIAL EQUATION IDENTIFICATION IN ANALYTICAL FORM
Abstract
In this paper we suggest a reduction of linear dynamics identification problem to the global optimization task. The current approach allows automatic determining the structure and parameters of a linear differential equation via the usage of the modified hybrid evolutionary algorithm for extremum seeking. The a priori information algorithm needed is only the dynamic system initial point or an estimation of the initial point and the sample of measurements: system output and, if there is one, system input.
Siberian Aerospace Journal. 2012;13(4):85-89
85-89
INTEGRATION OF INTELLIGENT INFORMATION TECHNOLOGIES ENSEMBLES WITH SELF-CONFIGURING GENETIC PROGRAMMING ALGORITHM
Abstract
Self-configuring genetic programming algorithm with the modified uniform crossover operator, that realizes a selective pressure on the recombination stage, is used for the automated integration of the computational intelligence technique ensembles. Ensemble members are the symbolic regression formulas, the artificial neural networks or their combination. They are also designed automatically with the self-configuring genetic programming algorithm. The comparative analysis of the approach performance is given on the benchmark and real world problems.
Siberian Aerospace Journal. 2012;13(4):89-96
89-96
96-98
FUZZY CLASSIFIER DESIGN WITH COEVOLUTIONARY ALGORITHMS APPLYING FOR SPEAKER IDENTIFICATION
Abstract
The problem of speaker identification is considered in this article. Classification problem Japanese vowels» from UCI repository is used as source data. This problem was solved with a fuzzy classifier as a classification method that is able to extract cause-and-effect relations from source data. A new method of fuzzy classifier rule base design with coevolutionary algorithms was applied. It is multistep fuzzy classifier design based on multiple repetition of previous fuzzy classifier design with self-tuning coevolutionary algorithms. Computational investigation of fuzzy classifier design with coevolutionary algorithms for different numbers of speakers and for different number of the used fuzzy rules was performed. The proposed method allows getting acceptable classification efficiency for a test sample: from 0.985 for two speakers to 0.786 for nine speakers.
Siberian Aerospace Journal. 2012;13(4):98-104
98-104
APPLICATION OF NEURO-FUZZY SYSTEMS IN BANK SCORING PROBLEMS
Abstract
As the generation of a neuro-fuzzy model from scratch by hand is complex and time consuming process, evolutionary computations are used for this. By virtue of genetic algorithms, the development of neuro-fuzzy systems is simplified and becomes automatic. The proposed scheme is applied to well-known Australian and German Credit Approval problems. Comparison of different algorithms is given.
Siberian Aerospace Journal. 2012;13(4):104-106
104-106
EVOLUTIONARY DESIGN OF NEURAL NETWORKS FOR FORECASTING OF FINANCIAL TIME SERIES
Abstract
The problem offorecasting in various technical, economic, and other systems is an important problem of nowadays. The methods of artificial intelligence and machine learning analyze very effectively various data including financial ones. The main problem of such techniques is the choice of model structure and the configuration of its parameters. In this paper we propose an evolutionary method for the neural network designing that does not require any expert knowledge in the area of neural networks and optimization theory from the user. This algorithm has been applied to the FOREX forecasting task of 13 different currency pairs based on the historical data for 12,5 years. The performance of the proposed algorithm has been compared to the forecasting results of other 6 algorithms. The proposed algorithm has shown the best performance on more than half of the tasks. On remaining tasks the algorithm yields slightly to the multi-layer perceptron trained by the particle swarm optimization algorithm. However, the predominance of the proposed algorithm is more significant.
Siberian Aerospace Journal. 2012;13(4):106-110
106-110
MODIFICATION OF FUZZY C-MEANS ALGORITHM WITH AUTOMATIC SELECTION OF THE NUMBER OF CLUSTERS FOR SPEECH UTTERANCE CATEGORIZATION
Abstract
In this paper we propose a fuzzy clustering algorithm, which is able to find the clusters in a data set without the number of clusters as a user input parameter. The algorithm is based on the standard fuzzy c-means method and consists of two parts: 1) detecting the number of clusters с; 2) calculating the cluster partition with the obtained с. We apply this method to the preprocessed database which was provided by Speech Cycle Company. The proposed algo rithm has been tested with optimal parameters which we have calculated on the test data.
Siberian Aerospace Journal. 2012;13(4):110-115
110-115
STATISTICAL MODELING OF INTERACTION QUALITY IN SPOKEN DIALOGUE SYSTEMS: A COMPARISON OF (CONDITIONED) HIDDEN MARKOV MODEL-BASED CLASSIFIERS VS. SUPPORT VECTOR MACHINES
Abstract
The Interaction Quality (IQ) metric has recently been introduced for measuring the quality of an interaction with a Spoken Dialogue System (SDS). The metric allows for an estimation of a quality score at arbitrary points in a spoken human-machine interaction. While previous work relied on Support Vector Machines (SVMs) for classifying the score based on a static feature vector representing the entire previous interaction, we evaluate a Conditioned Hidden Markov Model (CHMM) which accounts for the sequential character of the data and, in contrast to a regular Hidden Markov Model (HMM), provides class probabilities. The results show that a CHMM achieves an Unweighted Average Recall (UAR) of 0.39. Thereby it is outperformed by a regular HMM with an UAR of 0.44 and an SVM with an UAR of 0.49, both trained and evaluated under the same conditions.
Siberian Aerospace Journal. 2012;13(4):115-119
115-119
LANGUAGE STYLE MATCHING AND VERBAL INTELLIGENCE
Abstract
In this paper language style matching of speakers yielding different verbal intelligence was analyzed. The work is based on a corpus consisting of 100 descriptions of a short film (monologues), 56 discussions about the same topic (dialogues) and verbal intelligence scores of the test persons. According to the results, higher verbal intelligent speakers showed a greater degree of language style matching when describing the film and were able to better adapt to their dialogue partners compared to lower verbal intelligent participants.
Siberian Aerospace Journal. 2012;13(4):119-126
119-126
Estimation of error bounds of identification of coordinates of electric power under remote diagnosis
Abstract
The authors describe analytical method developed for estimation of errors of identification of coordinates of thermal images given points with remote study of technical condition of overhead power lines and consider a set of main errors of primary parameters measurements, and the algorithm for calculation of its impact on RMS error in determination of coordinates of thermal images given points. The parallel of errors obtained by analytical method with the results of estimations of the errors obtained with the method of statistical modeling is pursued.
Siberian Aerospace Journal. 2012;13(4):126-130
126-130
130-134
Rectilinear uniform gas flow with thermal efficiency in propulsion equipment of aircrafts
Abstract
The article considers a model of distribution of thermal and dynamic boundary layers distribution in the process of turbulent flow of the gas stream. Expression for determination of energy thickness is presented and expression for the determination of local thermal efficiency coefficient in the form of Stanton criterion. Comparative analysis of the theories of different authors is presented as well.
Siberian Aerospace Journal. 2012;13(4):134-139
134-139
CALIBRATION OF MEASURING PATH FOR ECM TEST OF NAVIGATION EQUIPMENT OF CUSTOMERS OF SATELLITE RADIO NAVIGATION SYSTEMS
Abstract
The authors consider calculation of radio-frequency lines «Navigation space satellite - the spectrum analyzer» and «the generator of noises - the spectrum analyzer» for their calibration for ECM test of navigation equipment of customers of satellite radio navigation systems.
Siberian Aerospace Journal. 2012;13(4):139-142
139-142
TECHNIQUE FOR CALCULATION AND SELECTION OF SPACECRAFT ELECTRIC HEATERS PARAMETERS UNDER UNCERTAINTY CONDITIONS
Abstract
The authors present analysis of different electrical heaters of spacecraft. Taking into account design and heat limitations, the mathematical models are presented for each of them. Technique for selection of heater parameters, based on limitations dependent criteria and providing for specified heat-flux density, is developed. The obtained calculation data of spacecraft heaters are presented and recommendations on choice of their parameters under uncertainty conditions are formulated.
Siberian Aerospace Journal. 2012;13(4):142-148
142-148
NETWORK ARCHITECTURE OF SPACECRAFT ON-BOARD EQUIPMENT MATING
Abstract
This paper describes network architecture of spacecraft on-board equipment mating, as well as shows current results of its prototyping. The aim of the development of this architecture is to obtain following advantages: improved reliability at acceptable cost, good scalability, fewer quantity of cable links, simplified service.
Siberian Aerospace Journal. 2012;13(4):148-154
148-154
EFFECT OF ALLOYING ELEMENTS SB AND V ON THE ELECTRONIC STRUCTURE OF TIN DIOXIDE
Abstract
The authors present theoretical and experimental studies of effect of alloying elements V and Sb on electrical properties of ceramic material based on tin dioxide. Theoretical modeling was carried out with the use of software package VASP, within the frame of formalism of density functional (DFT). Synthesis of ceramic based on tin dioxide was performed by traditional technology, under sintering temperature of 1300 °С, with different concentrations of dope additives of antimony (from 1% to 5 %). Material obtained with the use of vanadium, had low conductivity. Studies of the structure showed the complete dissolution of antimony tin dioxide. The calculations showed that the ceramic activation energy of stoichiometric ratio (SbSn 47O 96) = 1.19 eV of ceramics (VSn 47O 96) = 1.33 eV. Experimental studies have shown that increase of concentration of antimony oxide leads to decrease of the band gap from 1.33 eV to 0.75 eV. The difference between the calculated value of the activation energy of antimony-doped tin dioxide and experimental studies is 19 %.
Siberian Aerospace Journal. 2012;13(4):154-159
154-159
STUDY OF PRESSURE DISTRIBUTION OF MEDIUM LONGWISE A CHANNEL UNDER ABRASIVE FLOW MACHINING PROCESSING
159-162
AUTOMATION OF MAGNITOELLIPSOMETRIC IN SITU MEASUREMENTS ON THE ULTRAHIGH-VACUUM COMPLEX FOR SYNTHESIS AND RESEARCH OF MATERIALS OF SPINTRONICS
Abstract
The article is a presentation of results of modernization of magnetic-ellipsometric complex created by group of authors. Automation ofprocesses of hardware component control is carried out and algorithms of processing of signals of magnetic ellipsometer are realized. Possibilities of the created system were shown on the example of technological cycle of production and in situ of research of structural, optical and magnetic properties of nanostructure of Fe/SiO 2/Si(100).
Siberian Aerospace Journal. 2012;13(4):162-168
162-168
INFLUENCE OF TECHNOLOGICAL PARAMETERS ON ELEMENT STRUCTURE OF MDO COVERINGS OF ALUMINIUM AND TITANIC ALLOYS
Abstract
Researches on definition of element structure of MDO of coverings of aluminum and titanic alloys are performed. Dependence of chemical composition of covering on technological modes and various compositions of electrolytes is traced back.
Siberian Aerospace Journal. 2012;13(4):168-172
168-172
HIGH-TEMPERATURE GAS-STATIC PROCESSING OF CAST CASE DETAILS OF TURBOPUMP SYSTEMS
Abstract
The article considers features of technology of high-temperature gas-static processing of the cast case details made from heat-resistant and heatproof metals and alloys. Results of researches and optimum modes of processing are presented
Siberian Aerospace Journal. 2012;13(4):172-174
172-174
RECYCLING OF OFF-GRADE PROPELLANT OXIDIZERS
Abstract
The problem of environmentally friendly technology for the recycling of off-grade propellant oxidizers (melange) is considered. The process scheme for production of nitric acid in a packed absorber as consequence of blowing off nitrogen oxides from melange with oxygen. Commercial nitric acid (60-65% wt.) is formed as a result of mixture with stillage residue. The basic parameters of the process are presented.
Siberian Aerospace Journal. 2012;13(4):174-179
174-179
PLASMA-SPRAYED MAGNETIC DIELECTRIC
Abstract
The paper presents the results of studies of formation of coatings on the basis of mechanical mixture of amorphous alloy powders Co5 8Ni 10Fe 5B1 6Si 11 and fused corundum Al 2O 3. Morphology is studied, X-ray analysis of coatings is made, electrical and magnetic properties of sputtered magnetic dielectrics with various degrees of ferromagnetic filling and different porosity are considered.
Siberian Aerospace Journal. 2012;13(4):179-186
179-186
186-191
PRINCIPLES OF FORMATION OF STRATEGY OF SOCIAL INFRASTRUCTURE DEVELOPMENT
Abstract
The author considers principles of formation of strategy of social infrastructure. The additional principles which take into account features of social investments are entered. The content of the offered principles is defined concretely with the account of the revealed features of development of social sectors at the present stage, and forms of their demonstration.
Siberian Aerospace Journal. 2012;13(4):191-194
191-194
194-198
ECONOMIC-MATHEMATICAL MODEL OF ASSESSMENT OF CAPACITY OF AN ENTERPRISE
Abstract
In article the concept «capacity of the enterprise» is defined and on this basis its economic-mathematical model, allowing to consider features of capacity of the enterprise as controlled subsystem and quantitatively estimate its realized and unrealized parts, is developed. The offered model in the long term allows to realize system of optimum enterprise capacity control.
Siberian Aerospace Journal. 2012;13(4):198-203
198-203
PRESENT STATE AND PROGRESS TRENDS OF ENTERPRISES OF DEFENSE INDUSTRY
Abstract
Present state and progress trends of enterprises of defense industry, including space-rocket sector, are considered in this article. Main stages of reformation and development of Russian defense industry are presented, their main content is revealed. The expected results of modernization of space-rocket sector are specified.
Siberian Aerospace Journal. 2012;13(4):203-206
203-206
206-210
210-216
THE PRINCIPLES OF TAX AND FINANCIAL INCENTIVES OF INNOVATIVE ACTIVITY OF THE ENTERPRISES OF SPACE-ROCKET BRANCH
Abstract
The necessity of the state stimulation of innovative activity of the enterprises of space-rocket branch is proved in the article. The principles of tax and financial incentives of innovative activity of the enterprises of this branch are formulated.
Siberian Aerospace Journal. 2012;13(4):216-218
216-218
COMPETITIVE ADVANTAGES AND ECONOMIC POTENTIAL OF REGIONS IN NATIONAL WEALTH OF RUSSIA
Abstract
The author considers problems of management of the regional economic potential and its updating in the conditions of structural reforms of the Russian economy, which are of particular practical importance, and therefore, studying the regional differences in national wealth, it is necessary to give the correct assessment to the competitive advantages of the region and be able to manage them for the improvement of the economic positions of Russia. Methodology and management tools for the study of the problem are offered.
Siberian Aerospace Journal. 2012;13(4):218-224
218-224