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.
In the field of the Museum exposition design in Russia and abroad considerable experience has accumulated. However currently we can state the absence of a comprehensive approach to create a coherent exposition system Exhibition – exhibition space. In this scientific article we formulated the concept of Space-graphic element. We have identified the structure, types and variants of use of space-graphic elements, as a special category of exposition tools in exhibition spaces. We have identified the main technical and compositional principles of space-graphic elements design. The use of those principles will allow organizing a coherent unity system Exposition – exhibition space. Concept of space-graphic elements is useful in the development of Museum and exposition activity.
Keywords: Space-graphic element, Museum-exhibition space, exhibition, principles of design, modularity, transformation, interactivity, integrity, structure, consistency
A comprehensive analysis of the trend indicators moving averages (simple – MA, exponential – EMA moving average convergence-divergence – MACD). Used data from the site of Forex (FX) for the period from 21 July to 21 October, 2013. Computing scheme is implemented in the mode of conservative scalping trading system unveils new profitable intraday trading system for the forex market Forex.
Keywords: Trend indicators, moving Average, simple average, exponential Moving Average, moving average convergence-divergence, trend, short-term trend, period, a short period, long period, conservative scalping.
The intense strained state analysis results of the ""Kirovets"" KPP-16(20) portal crane trunk solid-state model are given in this work by a finite element method. Model operation of certainly element model in the program environment the Compass 3D v.14 is executed and results of its calculation in the form of the card of tension and the time-temperature chart for two cases of a loading are presented.
Keywords: finite element method, solid-state model, metal construction, portal crane, trunk, card of tension, time-temperature chart.
The application of asymptotic analysis method for displacement fields in environment is considered on the basis of special representation of motion equation solutions for multilayered half plane in the case of steady vibrations. The large parameter in suggested research method is distance from force source to supposed view point with glance of wave re-reflection from layer boundaries. The results of numerical simulation is given and the conclusion about the effectiveness of suggested method for construction of asymptotic expansion is given.
Keywords: Asymptotic expansion, Fourier integral, multilayered environment
The stated task is development of planning system of energy-efficient trajectories for stratospheric airship. Different intellectual approaches for this task were analyzed. Genetic algorithms were chosen. Results of application of genetic algorithms were considered.
Keywords: MAAT, high-altitude airship, control system, planning, genetic algorithm
We consider the relevance, peculiarities and the main stages of composite developments in the technology of production of finishing materials based on glass and ceramics. The description of technology of production of universal fragments, making the block-transformer. As basic materials for the development of applied chamotte ceramics and glass sheet.
Keywords: composite development, design, manufacturing technology, unit transformer, fireclay, glass