SCIENCE & EDUCATION

Semiautomatic knowledge extraction from text documents are considered.  The approach is based on Design Patterns forming from concepts  of given ontologies. The pattern structures are suggested and  the examples of patterns  are represented.

 With the Green functions method the authors studied metal particles polarization on the conductor substrate in an inhomogeneous electrostatic field of a scanning tunneling microscope. Mutual shielding of 10 nm nanoparticles reach approximately 10% and is expressed more greatly when the nanoparticle size difference is bigger. Calculation results will be applied in nanotechnology and nanometrology. 

 The article considers the application of ultra ink-jet express diagnostic to select the optimal functional coating and technology of application. It is shown that the ultra ink-jet diagnostic is a universal method for analyzing the wear resistance of coatings by real simulation of most types of mechanical wear: abrasive, hydroabrasive, hydroerosion, cavitation. The authors propose an opportunity to analyze the wear rate and fatigue wear in the development of physico-mathematical and probabilistic models, application of acoustic emission data and the use of macro-and mikrofraktographical analysis results. 

The report introduces a MEMS gyroscope-based stabilization system concept and considers various types of stabilization systems, their advantages and disadvantages as well as fields of their application. The choice of a MEMS gyroscope for stabilization system is reasoned. The report also describes the basic principles of MEMS gyroscopes operation and gives an account of comparison of characteristics of analog and digital MEMS gyroscopes. A number of models by different manufacturers is presented. The authors designed a prototype version of the stabilization system. Some experimental circuit boards for MEMS gyroscopes in a stabilization system are also presented.

This article is about current problems of high-skilled personnel training in non-stop professional development system. There are schemes of continuing  education and non-stop professional development provided. Key characteristics of a highly knowledgeable specialist are considered. The author shows the role of enterprises in personnel training, defines problems of such training and reasons for educational dip of today high-school graduates. Possible up-to-date solutions to abovementioned problems are also provided.The author concludes that package solution for development of non-stop professional education system is a relevant and crucial objective for present-day postindustrial society and necessary condition for a personality’s professional self-determination, development of his/her powers, personal and professional potential implementation through the whole life-time.

 The article considers functions, structure and content of a virtual room intended for teaching fundamentals of designing and calculation of technological equipment to students of technical specialties. Address of the virtual room: www.gaps.tstu.ru/kir

To detect the factors defining phasing out of the next-generation microwave radio signals mixers based on resonant tunneling nanodiodes, researches of regularities of their formation are conducted. It was established that the possibility of increasing reliability of these radio signals mixers lies in optimization of characteristics of the resonant tunneling nanodiode structure.

The article is devoted development of the technique of temporal relational data model adaptation in the multidimensional space. Limitations of temporal relational data models with modified data structure have been described if existing methods of their implementation are used. The multidimensional space structure for temporal relational model is offered and the multidimensional matrix algebra for operating with such space is specified to reduce these disadvantages. Transformation from the relational data model to the multidimensional space and inverse transformation have been developed based on particular structure of the multidimensional space and the algebra of multidimensional matrixes. As a result the technique of temporal relational data model adaptation has been specified which includes the single transformation from an initial relational data model to multidimensional space, change and performance of queries to such multidimensional temporal relational model with modified data structure.

The authors propose an operating parameters calculation method for skid-steer loaders with a side turn with regard for their technical level. The calculation method is based on application of dimensionless criteria of design parameters’ interrelation. The article presents statistical analysis results with an estimation of coordination of the quantity of models produced by manufacturers with their operational mass for the retrospection period of 1972 - 2010. The tendency of producing models with the operational mass of up to 3000–3500 kg is defined. On the basis of calculating experiment in Mathcad environment regularities of operational parameters influence on an index of estimation efficiency are revealed.

 The article sets out the main reasons for preliminary testing on-board equipment of new generation micro-satellites at the present stage of rocket and space technology development. As proof of this the authors present a comparative analysis of domestic developments in the field of micro-satellites and platforms for them, and as a result, “Soyuz-Sat-O” satellite is selected. The basis of creating a micro-satellite “Soyuz-Sat-O” is the latest achievements of cooperation in equipment developments, which can serve as an analog in development of perspective micro-satellites with different purposes of use.

The article focuses on the major factors influencing process of construction of the capital structure of the enterprise. It also shows the possibility and gives ground to the expediency of utilization of the analytic hierarchy process when choosing the rational capital structure. Finally, the article considers the stages of construction of the enterprise's capital structure management model and its test results.

The methods of tire noise measuring and processing of obtained information have been examined. On the basis of the method of synchronous averaging analyze the effect of perturbations on the components of the process of tire noise for motion for the case of bench trials has been analyses. The adequacy of the procedures used in tire noise measurement bench and road conditions was estimated by correlation analysis. The integrating and separate- frequency assessment of correlation coefficient has been done. The algorithm of quality improving of experimental appraisal has been presented. The experimental data were performed with the use of the synchronous with an external sample of one turn of the wheel using a rectangular weighting window. Statistics and regression accordance with results of tiers trial using the different methods have been presented. Checking the linearity of the regression was carried out by statistics F, which has F-distribution Fischer.

 The article considers an approach in the field of management of a difficult machine-building product life cycle at design stage. The authors offer a model of the product and methods of cost estimating of its life cycle during its operation. Computer simulations are considered as a prediction method of operation results.

Practically in all fields of manufacture pressure gages are applied. In Russia out-of-date gages of control of parameters of the technological processes developed in the eighties last century are applied. So it is necessary to start creation of microelectromechanical of gages of pressure. For the purpose of optimization of designs and manufacturing techniques domestic microelectromechanical pressure gages the researches design and technological approaches of creation of microelectromechanical pressure gages are carried out.

 The article describes the ways of development of microelectromechanical gyroscopes and acceleration gages in navigating devices of missile systems. The authors propose variants of design of microelectromechanical compensatory acceleration gages and of rotor vibrating gyroscopes. It is shown that microelectromechanical two-coordinate gages of angular speed have some advantages in comparison with solid-state ones. Designs of microelectromechanical acceleration gages and gages of angular speed are technological and easily realized on practice.

 The mathematical model and the computer program described in this article can be used in designing a switched reluctance machine and in its control. It can reduce costly and lengthy development cycles "design - manufacturing - test." In addition, the mathematical model can be used for training purposes during computer practical work.

 This article contains an example of a track-type vehicle transmission model. Transmission is made on the basis of a valve-inductor linear motor. The authors consider the issues of mathematical modeling of a valve-inductor linear motor. The main emphasis was placed on universality of a geometric configuration modeled engine. The authors suggest a method for creating mechanical characteristics of the motor using a simulation model.

In this article the approach is considered, allowing to adapt for the developed now and predicted organization, engaged in experimental rocket complexes. The methodical approach offered in article is based on use during the experimental working off a rocket complex’s quantitative estimation indicators of reliability during the development of operating influences and allows to consider and compensate the revealed defects and to increase the experimental working off of rocket complexes’ efficiency as a whole.

In the experiments the author used a full-scale model of a WWER-440 fuel assembly of the second generation with lead imitators of nuclear fuel tablets. The pilot study technique consisted in free oscillation excitation of a fuel element cluster by sudden removal of concentrated transverse static load which provides the initial sagging of the fuel element cluster. Vibration movements were fixed on the signals of piezoresistive accelerometers which were included in measuring channels with integrating amplifiers. Data on the damping factors indicate the determining role of hydrodynamic processes of dissipation of vibrational energy of a fuel element cluster in comparison with the effects of structural damping.

The article deals with calculation of the swaging force of axisymmetric tubing stocks with use of a die block the body of which has ring grooves. Positions formulated by E.A. Popov are used as basic theoretical preconditions of the analysis. The article shows a scheme of internal and external forces during swaging as well as piece-part shaping stages. When using the die block with ring grooves the edge of the swaged tubing stock makes movements into the a groove during the shaping process, and then it moves out, being out of contact with the die block surface. Such way of swaging by means of flutes allows to reduce swaging force and to increase the degree of forming at the expense of reducing the contact friction force, thus reducing the number of process steps at stamping.