Analysis of the effectiveness of the electrophysical activation of foam concrete mixtures was completed. The raw materials and experimental technique are described. Results of estimation of the effectiveness and impact of alternating electric field on the foam concrete mixes was presented. As object of research was made the impact of factors such as the grading of the aggregate and the tension created by the electric field on the physico-mechanical properties of foam concrete made of electroactivated mixtures. Conclusions are made on the basis of the obtained experimental dependencies.

Keywords: Variable electric field, foam-concrete mix, activation, grain size of sand, coefficient of structural quality, gelation, interpore partition

The article describes directions optimization of supply chains of the consumer market, inventory management of wholesale and retail executives and organizations that make it up. Presented the study methods of inventory control, disclosed the problems of development of modern theoretical and methodological platform of inventory management in wholesale and retail networks.

Keywords: Inventory management, supply chain, wholesale and retail link, logistics optimization.

In article questions of pilot studies of disperse structure of drop ablation are considered when putting electroplated coatings, the technique of performance of experiment is given, the design of experimental installation is considered, results of researches of dependence of height of take-off of drops of ablation over an electrolyte surface from their effective radius are given

Keywords: electroplated coatings, drop ablation, bubbling, drop, height of take-off of a drop, effective radius of a drop

One of the main and most relevant and profitable areas of agricultural production - produce quality seeds in the farms, in the process of post-harvest grain processing. Was evaluated basic parameters of the separation process on the existing scheme sieve winnowing machine with certain technological characterization of the purified grain material according to the different conditions of separation, the possibility of defining a predetermined fraction of a feed and seed quality of purified material. Synthesis was performed variational various separation schemes and functioning to identify optimum operating parameters. According to the results of the experiment set technological possibility and the main characteristics of the process producing high-quality purified fraction of the material given by the scheme, which provides the best performance.

Keywords: grain material, fractionation, modeling, cleaning of grain

The problem of synthesis of management by spatial orientation of GSP realized in real scale, its spatial situation providing high-precision definition in conditions of action of hindrances is considered.

Keywords: the inertial navigation system, the gyrostabilized platform, optimum control

This paper presents a comparative analysis of the effectiveness of the method Cuthill-McKee algorithm and fill-reducing ordering of a sparse matrix, based on multi-level nested dissection paradigm, developed at the Department of "Computer Science and Engineering," University of Minnesota. For short, we shall call the algorithm Cuthill-McKee CM, and the algorithm of the University of Minnesota — NodeND (Node nested dissection). This article uses a modification of the CM algorithm — RCM (reverse Cuthill-McKee), because in practice the reverse numbering index allows you to get a greater advantage than using a direct algorithm CM. The reason for using these algorithms are high speed computational algorithm, as it is necessary to solve the system proximal to the diagonal, the great acceleration of algorithms for solving FE problems using technology such as CUDA  

Keywords: finite element mesh renumbering methods, three-dimensional mathematical modeling, elasticity theory problems, finite element method, finite element meshes

The problem of temperature stresses in revetments of concrete plates taking in the account various conditions of temperature impact is considered. Contact conditions for various friction coefficient are considered. The simulation is made using finite element method in Ansys © software. The examples of exact simulations for stress fields are given for different parameters of problem

Keywords: temperature stresses, concrete plate, finite element method

the analysis of foreign researches, which consist of processes of functioning timber lorries is given. Decrease transport expenses with minimization of empty run of timber lorries and formations of rational structure of this park has been proved.

Keywords: timber lorries, functioning

The return coefficient task of determination of properties of a construction design by means of the device of neural networks is considered. As model the neural network in the form of a polutorasloyny predictor with possibility of iterative accumulation of volume is taken. Each subsequent step connected with addition of a new stream of neurons, is carried out only after training of the previous stream. Coefficients of synoptic communications pay off with the help of procedure of the return distribution from a condition of a minimum of function of an assessment. Algorithms of the solution of direct and return problems of multidimensional approximation are developed.

Keywords: neural network, approximation, synoptic communications, return distribution, construction designs

The nano-catalyst ceria (CeO2), activated by Pt nanoparticles, is known for being prospective and efficient material widely used in catalysis, fuel elements, and sensors. One of the most up-to-date methods of catalysts' reasearch is X-ray absorption spectroscopy (XAS) that is sensitive to the chemical state of catalyst's active centers [1,2]. Using XAS in the fluorescense detection mode at CeL1 line with high precision we studied electronic structure of Pt-activated nanoparticles of ceria at various redox conditions. In order to detect partial X-ray fluorescence yield the emission line CeLγ3 was used, which allowed us to increase spectral resolution. We researched local atomic and electronic structure of the materials under study. Oxygen vacansies were found to appear on the nanoparticles surface of ceria at 5% CO He atmosphere. Theoretical modeling of the obtained spectra at CeL1-edge demonstrated good agreement with experiment.

Keywords: X-ray absorption spectroscopy, HERFD, XAS, Ce-based catalysts, oxygen vacansies

he urgency of determining the reliability as the main criterion for the reliability of ventilation systems. The approaches to the determination of the reliability of the ventilation system, the criteria for estimating the parameters of their work, the model of the process of prognosis and improve the reliability of the ventilation systems. Therefore, to quantify the reliability of ventilation systems proposed an approach based on the analysis and evaluation of the physical premises of failures.

Keywords: Reliability, mechanical, exhaust, ventilation, technical, system reliability

The article presents the results of the analysis of the known methods of measuring the quality control of construction products. 
Advantages of extending the scope of remote methods of the control by measurement including photogrammetry are listed. 
Expediency of colour-texture analysis of surfaces at the quality control of construction products is substantiated.
The field of rational application of colour-texture analysis at manufacturing supervision and field inspection of buildings and constructions is shown.  

Keywords: building structures, product quality inspection, control by measurement, organoleptic inspection, methods of photogrammetry, colour texture analysis

Recommendations are given for the decision of the master plan , space planning and architectural design hotel, located in the mountainous regions of Southern Russia. Cost-effective compact centralized schemes in terms of the relief is difficult to use , so it is possible to use the blocked cells or housing related short covering pedestrian connections. In the design and orientation of the residential floors of hotels to consider an overview of the numbers of interesting species. In the design of the hotel at the foot of a steep slope is advisable to use the gallery schematic layout of residential floor gallery and orient the unfavorable shaded side of the building . When equal landscape conditions, you can use a corridor plan structure with the location of the rooms on either side. For hotels located in mountainous areas, is characterized by two main approaches to their architectural solutions : contrast harmonic landscape or merge with them.

Keywords: hotel, hotel architecture, design hotels, mining and recreational complexes, hotel for relief, terraced hotel, South Russia

This paper is devoted to research of the main problems of the external and internal environment of the Russian higher educational institutions in a modern economic situation. The methods, allowing to reveal and determine system effectiveness of management by university in aspect of marketing activity of higher educational institution are offered and proved

Keywords: Competitiveness of higher education institution, marketing environment, external and internal environment of higher educational institution, marketing audit, remote monitoring

Key approaches are presented to the organization of effective use of land resources in article in the sphere ekologo-economic at the present stage of development of agro-industrial complex.

Keywords: profitability; land resources, agrarian environmental management, economic efficiency, ekologo-economic organization.