The analytical assessment of change of office properties of heavy-duty details of friction pairs of the cart of the freight car on the first depot repair is presented. The technique of definition of iznos of details of the cart is applied to determination of faults. The most subject are shown to defects nodes of the cart of the freight car.

Keywords: cart of the freight car, frictional wedge, cap of a skolzun, thrust bearing disk, frictional level, wear, wear resistance, defects of the cart of the car

The article presents the results of analyzing patents, aimed at improving the design of jaw crushers and crushing processes using them,conducted in order to establish the technical level of their development.

Keywords: rock, objective tree, crushing, patent, jaw crusher

The article discusses the functioning of the transport system of the city, revealed problems in the development of urban transport and the role of rail transport, barriers and opportunities of using railways in the city for intercity passenger transportation.

Keywords: urban transport, intercity rail transportation efficiency, the organization of transportation, sustainability

Set forth in article method can be used when creating machines with guaranteed safe operation in case of possible large expenses for repairs. In the method used, the transition from selective statistical distributions (strength, loading and resource) to the parameters of the General population of finite volume. Absolute dependability is ensured if the resource (design) of parts and machines will be slightly larger than the first variational value of some aggregate. Approximate calculations showed that the increase in the price of the car is about 30% at absolute reliability of all machine parts.

Keywords: method, security, absolute reliability, safe operation, the totality of the final volume, the minimum design life, the allowable growth rates

Criteria and approaches to the new business choosing for investing and developing being used by contemporary Russian specialists are discussed in the paper. Advantages and shortcomings of different approaches being used in practical management are analyzed. Different approaches used by specialists of different profiles are discussed as well as a two-step method of the new business choosing.

Keywords: business choosing, criteria, investing, business attractiveness, resource capacity

In work design and technological process optimization of hammer crusher chipper production is performed. Replacement of material which the product is made of is executed, and machining volume with formation of a number of detail constructive elements is reduced during receiving preparation stages.

Keywords: hammer crusher chipper, optimization, design, technological process, material, preparation, prime cost, annual economic effect

It is given the interpretation of the primary parameters of conflict obtained by survey (137 people). The studied audience was typical for undergraduate students on basic social characteristics. In the questionnaire the various parties to the cognitive perception of the political order were identified by direct survey. And the emotional relationship to local and Central government were obtained on the technology of semantic differential. The model is based on the results of the parallel hierarchical factorization cognitive components. On the first level 14 of the primary signs reduced to five factors. They characterize the socio-political expectations, declared and real political activity, evaluating the legitimacy of authorities and political situation. These indexes, in turn, on the second level are combined into two independent factors: General cognitive activity and perception of political orders. In the model the indices of the affective perception of these orders (calculated on the basis of the affective section of the questionnaire) were added to them. Two-dimensional histogram of the distribution component matrix for the respondents shows that the subgroup with both highly negative emotional perception and political activity is low (for example, a value of the first parameter -0.4 and below, and the second 0.4 and above is characterized by only 4% of respondents). These respondents represent a risk for the possibility of forming protests.

Keywords: questioning, cognitive component, semantic differential, conflicts, parallel hierarchical factorization, the affective component, matrix, distribution function, multivariate analysis

It is necessary to get a complex integral assessment in object control in different domains. The complex integral assessment is an indicator of problem presence or problem absence in work of control object. It is necessary to get the integral assessment in training control too when there are complex open ended assignments in a training course. In the paper a learning efficiency assessment technique in case of complex open ended assignments is described. It is based on integral indicator assessment using expert methods. The technique was used in the education process in Ufa state aviation technical university during the performance of term papers on the subject «High-level programming». The technique allowed to assess the training course and identified the need for its updating to improve learning efficiency.

Keywords: complex open ended assignment, automated scoring, learning efficiency, efficiency assessment, integral efficiency indicator, indicator convolution, expert assessment method

"This article provides a solution of the plane contact problem with the use of a finite-element method. It presents the algorithms to determine the “node – response surface” contacting pairs through method of minimal penetration of contacting bodies. The article also contains the algorithm of rapid formation of the global stiffness matrix, taking into account the changes of the connections between mesh nodes for each iteration of solving in the Mathcad software."

Keywords: solution of the contact problem, flat stress strain state of the finite element method, Mathcad

Learning efficiency becomes very low when there are complex open ended assignments in a training course. This is connected with not comprehensive complex open ended assignment statistics and difficulties during the problem analysis. In the paper a complex open ended assignments-specific technique is suggested. The technique allows an instructor to analyze problems of training course and their sources conveniently and in detail and correct training model using learning results. The technique and a tool based on it were used in the education process in Ufa state aviation technical university during the performance of term papers on the subject “Design of automated system of data processing and control”. The learning efficiency increased by 14% as a result of using the technique.

Keywords: learning efficiency, training control, complex open ended assignment, cognitive map, production model, set-theory representation, error bank

This paper proposes a method of determining harmfulness of pollutants resulting from the operation of boiler equipment, discusses how the use of heat energy waste resulting from the operation of thermal plants boilers, as heating of the coolant. And is determined by the energy potential of waste heat, calculate the concentration of pollutants in the atmosphere and provide a method of determining the calculated fuel consumption volume of flue gases, amount of contaminants emitted into the atmosphere during operation of boiler enterprises.

Keywords: resources, energy, coolant, contaminants, heat capacity, energy saving

According to meteorological studies found natural growth of air temperature, coincident in timing with the beginning of a geomagnetic storm. The data were analyzed according to the temperature of about one hundred meteorological stations. Based on this analysis, it was established phenomenon of short-term (30-60 min) growth of surface layer air temperature during the beginning of the magnetic storm, the detected azimuthal drift of the temperature gradient after the start of geomagnetic storms

Keywords: the low-latitude thermosphere, geomagnetic storm, temperatura air, temperaturny gradient, growth temperature

The thermal regime of the sea is influenced by the sun’s insolation surface water and heat mass transfer sushi. In the period of the regional warming we can watch heightening of average annual temperature of the surface water up 0,8 °С. The annual variations in sea level in Sukhum district correspond with the annual flow with maximum in summer and minimum in winter. Many years average level of the area of the Sukhum Black Sea is 93 s. For characteristic of hydrological regime of the sea is: the high temperature of the water for a whole year, the predominance of wares which height is two metros and the system is stable and currents. In winter rough sea is predominate 23,9% in the south direction and in summer 30,7%. There are a lot of storms in February and it makes 35,8%.

Keywords: the area of, the temperature the water, wind regime, rough sea, sea level, atmospheric precipitation, hydrological regime, wind effected phenomena, the river flow

The paper deals with an influence of a piezoelectric beam geometric dimensions on the primary parameters of piezoelectic constructions. Such parameters as resonance and antiresonance frequencies as well as electromechanical coupling coefficient are investigated. Optimal piezoelectric beam length and width relations are obtained. In conclusion some thoughts on piezoelectric beams practical applications in hydroacoustics are discussed.

Keywords: hydroacoustic antenna, ANSYS, piezoelectric transducer, beam, amplitude frequency characteristic, electromechanical coupling coefficient, modeling, normal mode

One of the parameters determining the efficiency of cleaning the blood in hemodialysis therapy is an effective mass transfer processes of metabolites through the dialyzer, which is defined by the mechanism of molecular diffusion and convection of low and medium weight substances in the blood. The article presents an analysis of modern mass transport models: streaming and kinetic; the analytical expressions of the spatial and temporal distribution of metabolites in the dialyzer. The results of mathematical modeling showed that these models do not reflect the full extent of the entire mechanism of mass transfer and must be supplemented. This is primarily due to the fact that blood is a non-Newtonian fluid. In addition, during hemodialysis, there is a change of the rheological properties of the blood - viscosity aggregated and deformability of erythrocytes, which ultimately affects the dialyzer mass transfer processes, reduces its clearance and thus reduces the efficiency of hemodialysis. The authors consider that the solution to this problem might be to develop a space-time mathematical model of mass transfer (the so-called distributed model of mass transfer), built with the influence of the driving forces behind the transfer of substances through the membrane dialyzer basic parameters and characteristics of fibers and rheological blood properties. In our view, the space-time dependence of the distribution of concentrations of metabolites in the blood and dialysate hemodialyzers allow to predict normalization the concentration of metabolites in the blood, and thus improve the accuracy of assessing the quality of dialysis.

Keywords: hemodialysis, mathematical modeling, spatial distribution, the time dependence, the space-time model