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

The main problems of urban infrastructure related to planning and urban management in the aspect of urban planning and architecture. It offers an effective solution to the problem of urban areas by developing the optimal organizational and administrative decisions in the field of urban development, taking into account the requirements for ensuring the functioning and development of the urban environment. Considered the key problem of decision-making system of organizational and determined the optimal set of components. To develop proposals for improving the existing urban management systems.

Keywords: economy sector, organization and management in construction, simulation, innovation stroitelvstve

Increasing the level of protection of the air environment of the fine dust is to address the issue of selection of the optimal operating parameters of dust collectors used in emission control systems to the atmosphere building industries. At various stages of the process of building production generated dust emissions have different particulate composition. This complicates the process of collecting dust removal equipment parameters and requires the detailed experimental studies. In this paper we consider the procedure experimental studies fractional breakthrough on different types of plaster dust production; provides recommendations to reduce the number of required tests; received the minimum possible value of the fractional dust breakthrough, regression models to calculate the fractional slip of dust of various fractions

Keywords: slippage,dust collector, fractional, cleaning, dust, efficiency, dispersed, options, gypsum

The article considers methods of evaluation and forecasting of organizational and technological characteristics in the construction of residential buildings in cramped conditions. Special attention is paid to the use of small, light elements that give the ability to use elevators, cranes – jib, lifts, etc. in case of rejection of tower cranes. This allowed not only to increase the flexibility of the organizational and technological processes and to enhance their compatibility in time and space, but at the same time caused the necessity to modernise the space-constructive solutions of buildings with a subsequent transition to monolithic frameworks.

Keywords: The scheme, methods, impact, construction, cramped conditions, a constructive solution

The article presents the technical and economic indicators previously proposed solutions truss reinforced concrete beams with combined prestressing. Reducing consumption of concrete and steel in comparison with typical. This reduces the weight of the beams and money. Significant economic effect is achieved by the use of roof beams t profile with a shelf in the stretched area. This effect is achieved due to a significant reduction of the structural height of the coating (beams and slabs). By reducing the volume of the brick walls of the building, which is based on the overlap, the cost of masonry with single-span building, as noted above, reduced by 33% in comparison with a standard solution.

Keywords: truss reinforced concrete beam, combo-prestressing of prestressed reinforcement

In our work we researched the possibility of producing active chlorine out of fresh natural water through it's direct elecrolysis. We discovered how the anode's corrosion resistanse relates to the ruthenium oxide and iridium oxide ratio in the anode's coating. We also researched their properties: chlorine outcom dependance on current, cell voltage, and active chlorine concentration increase dynamics in processed water from Don river.

Keywords: Emergencies, water supply, disinfection, electrolysis of natural water, chlorides, active chlorine, current density, electrode's lifetime

This article describes the issues of water management in the south of Russia. Submitted by the need to implement new permanent monitoring systems for long-exploited water bearing structures. Currently, more than 80% of water conveyance structures in the south of Russia have worked much your standard service life. At the same time there is a simultaneous increase in the load on the aging waterworks, in the absence of the necessary qualified staff and technical repair base will inevitably lead to an increase in the number of accidents due to operational reasons. Existing methods of inspection of hydraulic structures aimed at assessing the overall suitability of facilities supporting structures for further use. During the irrigation channels trough surveys, a number of questions to identify the nature of damage and defects, as well as forecasting of technical condition for a certain period of time. Therefore there was a need for a method for screening and prediction of technical state of gutter channels of irrigation systems. Monitoring is carried out taking into account the existing regulations for the design, construction and operation of the specifics, as it highlights the basic requirements for carrying out the process of the technical state of constructions using modern measurement instruments for nondestructive monitoring.

Keywords: monitoring, water-conducting structures, the residual resource, water management, reliability parameters, technical condition

The article presents a review of recent projects of arch designs, work on their research. Arch structures are widely used in construction since ancient times. The Romans were the first to use the arch of considerable size, and some of them survived until our days. One of the examples of arch structures in Roman architecture is the Roman aqueduct of Pont du Gard. Accident arched constructions mostly occur due to buckling of the entire structure. Risk of accident from loss of stability is especially great because buckling can occur suddenly. The loss of stability as possible out of plane and in plane. Flat design farm, arches, frame resistance to bending in the plane of the structures than from the plane. Cases of accidents of industrial and civil constructions, which occurred from buckling lateral torsional buckling is little known. Buckling lateral torsional buckling of structures, working in transverse bending, is given little attention, as it is believed that if and has in some cases place, it would not lead to accident due to their shared relationship of beams with other designs.

Keywords: arch, stability, nonlinear analysis, fixed arch, out-of plane bucling strength, critical load amplifier

Main questions of akkumuliruya funds for capital repair of common property. The analysis of the infrastructure of housing and communal services as of 2015 in the Rostov region. Based on the studies, compiled in a tabular fora model of financing capital repairs, and methods of forming the Fund overhaul.

Keywords: overhaul; infrastructure; housing and utilities; Finance; municipal services; municipal Fund; the method of accumulation; housing services; communal services; regional operator; the homeowners

The article describes the results of simulation of a five-channel inverter with scalar control the motor speed. Briefly describes the principles of a scalar control, the structure of the five-channel inverter, as well as five-channel method of controlling the inverter using the method of double-zero sequence voltage (DZV). The structure of the model and the simulation results, confirming the possibility of using a five-channel inverter with scalar control the motor speed is considered.

Keywords: motor, speed control, scalar control, five-channel inverter, Simulink