The scheme of calculation of nonstationary temperatures in the bodies heated by the radiation which based on the established dependencies between them is presented in the article. To study the process of radiation heating of bodies, the method of linearization functions proposed by one of the authors is used. The idea of the method is as follows. The linearizing transformation leads nonlinear boundary conditions to linear boundary conditions of the third kind. The solution of the linear problem in the stage of regular temperature regime is found by multiplying the corresponding solutions of one-dimensional transfer problems. After the transformations, equations are obtained that allow calculating the temperature fields in multidimensional bodies, if the temperature distribution along the coordinate axes or on the surface is known. There is no need to know the physical parameters of the material and the degree of blackness of the body surface.

Keywords: temperature field, radiation heating, multidimensional bodies, linearizing transformation, linear boundary conditions of the third kind

to simplify the process of integration of the user into a new urban environment, it is optimal to use a web service that allows, on the basis of location, to determine the nearest points that are of any informational nature, or grouped lists of interconnected points that form routes. The web service corresponds to the REST (representative State Transfer) architectural style and is developed on the Java 8 programming language platform. OOAP (object-oriented analysis and design) was used as a design methodology.

Keywords: web service, web application, user, tourism, tourist route, attractions, coordinates, location

The article describes the main stages of development of the rationing system, as well as foreign analogues. The development of the rationing system and their development potential are described.

Keywords: rationing system, production efficiency, competitiveness, modern standards

The reorganization of existing coatings of public buildings into the “green roof” technology is possible in cases of the generation of an extensive type of green roofing system and, extremely rarely, of an intensive type. To clarify to the above, the load from the green roof of the extensive type in a water-saturated condition on the bearing part of the structural system of the building is 80 ... 100 kg / m2 with a substrate thickness of not more than 0.07 ... 0.15 m. Therefore, in most cases the introduction of this type of green Coverage in public buildings of the existing buildings is feasible.

Keywords: green roof, thermal resistance, strength of parts of the structure, functional zone, limit states, construction, technology and organization of construction

The urgency of estimating the content of nitrates in food products to ensure environmental safety at an individual level is discussed in the article. Data on the negative effect of increased nitrate content in plant foods on human health are given. The results of the study on the determination of the content of nitrates in food products using a household nitrate counter "Soek nuk-019-2" are discussed. This device makes a conclusion about the concentration of nitrates by comparing the reference electrical conductivity of different types of vegetables / fruits with the electrical conductivity of a particular controlled product. It is determined that exceeding the MPC is observed in potatoes and onions, which are sold through a network of stores that occupy leading positions in the prevalence in Taganrog. Excess of MAC in carrots is observed only in its central part (core). Based on the results obtained, practical recommendations are given to ensure the safety of food consumption.

Keywords: food safety, food, nitrate content, household nitrate

The paper presents the characteristics of the leading types of media facade constructions on the market, on the basis of the analysis of which the prospects for the introduction of technology into the urban space were evaluated. The article also describes the main types structural and architectural solutions that determine the rationality of the use of a particular type of media facade.

Keywords: media facade, cluster media facade, framed media facade, frameless media facade, modular media facade, LED, architectural lighting, LED screen, media facade design, interactive facade

This article describes two types of a design of the substructure of the offshore ice-resistant fixed platform - metal caisson type and reinforced concrete monobasic type in the conditions of emergence of emergency situations are considered. On the basis of calculations the most acceptable material for application in the conditions of emergence of emergency situation is chosen.

Keywords: oil and gas offshore struture, seismic loadings, finite elements method, 3D model, loads and actions

The methodology of regression mathematical description of fragments of experimental data of arbitrary dimension by polynomials necessary for a given accuracy of order and structure is considered with the help of a hybrid of classical regression analysis and a modified evolutionary genetic algorithm through which the polynomial structure is varied and optimized.

Keywords: optimization, approximation, regression analysis, mathematical model, experimental data, heuristic methods, evolutionary-genetic algorithm

In article traffic safety and capacity of bridge crossings is considered. The road accident which happened on the bridge crossing sharply reduces its capacity and, therefore, all road in general. At emergence of danger to the movement in difficult road conditions the driver is compelled to apply the emergency braking. Thus the road accident won't occur when a distance between cars more or is equal to the size of a stopping way. At determination of length of a stopping way of the car at the emergency braking values of sizes of time of delay of operation of the brake drive and time of increase of delay are used.

Keywords: traffic safety, bridge crossing, capacity, stopping way, distance

This article presents the results of studies on the effect of the erbium chelate complex on the processing of secondary raw materials from polyethylene terephthalate (PET).

Keywords: polyethylene terephthalate, recycling, extrusion, polyisobutylene, chelate complex of erbium.

Modeling and investigation of filters of selective rejection of narrow-band noise with a priori unknown frequency and selective suppression of multidimensional pseudorandom signals of discrete-nonlinear Lorentz system are carried out. The transformation of signal with phase manipulation in the digital selective nonlinear reject filter are studied. The digital functional rejection filters for selective signal rejection by form, synthesized in according to the principle of two-channel invariance theory, in information transmission systems with PSK-signals for suppressing additive harmonic signals of narrowband interference and masking pseudo-random signals of discrete nonlinear Lorentz systems is recommended. Recommendations on the use of digital non-linear rejection filters using mathematical programs are developed and justified.

Keywords: reject filter, narrowband interference, Lorenz system, pseudo-random signal

The questions of desorption of the elemental composition of glass during processing with an electron beam is discussed. Sample silicate glasses prepared by standard technology were studied after polishing by electron beam processing (EBP). Calculated estimates showed that the depth of the surface depletion layer of weakly alkaline elements reaches 20-50 nm. Herewith the temperature front reaches the machining depth of 50 µm.

Keywords: electron-beam, glass, diffusion, desorption, microsystems

A comparative analysis of the methods of heat engineering calculation and an assessment of the efficiency of heat exchange in frame-panel housing construction are presented.

Keywords: Skeleton-panel housing construction, air permeability, heat exchange efficiency, heat and moisture regime

The article deals with the problems of using structural systems with outriggers for high-rise buildings. The analysis of various designs is carried out, the features of their work are specified, the advantages and disadvantages are identified, the areas of their application.

Keywords: high-rise building, structural system, outrigger, skyscraper, column, core of rigidity, strength, reliability, horizontal load, aerodynamics

The article is devoted to the problem of using artificial neural networks as one of the methods of data mining (intellectual data analysis) for classifying the competencies of university students when determining the educational specialization. It describes the complexity of the process of selecting specialization and the associated negative consequences, as well as an approach to solving the given problem using software classification tools. As a basis for the implementation of the proposed tools, the student's information system is used on the website of the University of Tartus, Syria. The article presents data selection criteria to form the training sample, which includes the academic performance in some courses as input vectors. The values of the output vector depend on completed specialization and it get into the training set only if it is properly selected. On the basis of these data, the structure of a multilayer artificial neural network is formed and the learning algorithm is selected, the results of which are reflected on the university's website in the form of advice on the choice of future specialization, which has allowed increase the effectiveness of the educational process.

Keywords: Data mining, artificial neural network, web-design, machine learning, classification