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  • The methods and means used by the expert-builder when conducting judicial construction technical expertizes

    Article is devoted to acquaintance with methods which are used in the work by experts-builders when conducting construction technical expertizes of building constructions, buildings and a construction. The list of the main methods used in researches by the expert is provided and also each method is considered in more detail.

    Keywords: Method, examination, expert, technique, fundamental principle, special case, graphic model, construction designs, construction technical expertize

  • The reliability model of the partial failure in the technical system

    In the article, the authors present the results of studies related to the effect of partial failures (PF) on the reliability characteristics of the system, determined through the probability of continuous operation over the interregional period under the conditions of continued operation after PF. The computational model is based on the assumption that the process of continuing to function after a spacecraft can be considered as redundancy by substitution, when the reserve appears capable of performing post-failure functions, but with some change in the reliability characteristics. The entire work interval is divided into separate sections inside, which the technical system operates with new reliability characteristics, with the sequential occurrence of several PF. A model with an exponential law of distribution of probabilities of partial failures is considered. It is believed that testing the device of the entire interregional period without a complete failure can be characterized as the product of the probabilities of the absence of a complete failure on the considered time interval, the absence of the occurrence of destructive external influences exceeding the critical values, the error-free processing of the program by the expert system and the absence of errors in the operator's actions. The results of the illustrative calculation are presented and conclusions are made.

    Keywords: partial failure, redundancy, indicators of reliability of working out in the interregional period, calculated ratios for assessing reliability in case of partial failure

  • The structure and mathematical models of the information system "Аluminum melt Mixer"

    An important aspect in the creation of information and training systems for training and advanced training of technological personnel of industrial enterprises is the development and implementation of mathematical models of the studied technological processes at the stage of forming algorithmic and software of such systems. The considered information and training system is associated with the blending and casting of aluminum alloys of various grades. The system contains the necessary amount of theoretical information that describes the basic principles of aluminum production using the most well-known technological operations aimed at the formation of the required metal alloys with a given chemical composition. The information-training system is based on a mathematical model of the technological process, in the development and description of which both the principles of informational similarity and the physicochemical laws are used using experimental-statistical modeling methods. The structure of the information and training system consists of structural units that interact logically with each other, which allow the formation and solving of various technological problems of melting aluminum melting in smelting furnaces. Each unit has a certain meaning and performs the required amount of load. The system consists of seven important and weighty structural units. The interactions of the studied production object with the control actions and external disturbances make it possible to form the initial parameters of the task, which in turn become the basis for user interaction with the training system. The user interface of the system allows visualizing the aspects of technological change that are taking place and storing the student’s corrective actions for further analysis in the computer’s memory. If necessary, the system can provide the user with the opportunity to use the potential of an interactive assistant, in the event that he is difficult or unable to determine the weight of the next corrective adjustment. The interactive assistant based on the current parameters of the technological problem is able to determine and suggest to the user the use of the most optimal control action for the best solution of the problem. Thus, when introducing these principles of training, the system should show its effectiveness by reducing the final cost of the finished metal products, by reducing errors in technological operations and empirical calculations of the masses of the components used, increasing its consumer qualities.

    Keywords: mathematical model, model-simulator, technological problem, system structure, physico-chemical patterns, chemical composition, control actions, control mode

  • Methods of accounting of passenger traffic and transport mobility of the population in Rostov-on-don

    The article investigates the process of organization of the public passenger urban transport of the city of Rostov-on-don and regularities of the process of organization of the public passenger urban transport of the city of Rostov-on-don, the relationship of the factors influencing this process.

    Keywords: preferential categories of passengers, passenger traffic, transport mobility, route network, public transport, regular passenger traffic, automated monitoring of passenger traffic

  • Mobile forensic tools and techniques: Android data security

    Undoubtedly, today mobile phones have become an integral part of people's lives. Having set up access rights to our phone, we are sure about the safety of data, but also we need to know that data from smartphones can be obtained in full by digital forensic investigators. Even deleted data can be restored by the tools of these specialists. Digital forensic experts and investigators have a wide range of multifunctional and narrow-profile tools that allow you to "extract" digital data from almost any device. This article analyzes various types of mobile device memory on the Android platform, from which experts get data, tools and methods for obtaining information from mobile phones.

    Keywords: android, digital forensics, database, computer security, Cellebrite, Oxygen

  • Building a knowledge base through system analysis of technologies and equipment for the management of spent nuclear fuel for the synthesis of new patentable solutions

    To form a knowledge base, a systematic analysis of patentable technologies and equipment for handling spent nuclear fuel was carried out. In the analysis, intellectual knowledge bases were formed regarding the technology and equipment objects being improved or replaced, taking into account their role in the end-to-end technologies and related operations of these processes. The research results showed the effectiveness of the formation of a knowledge base and its use for the synthesis of new intellectual property. As a result of the work done, new technical solutions were found regarding the design of containers for transporting and storing spent nuclear fuel from nodular cast iron. The significance of the solutions found is confirmed by obtaining patents for invention in their respect.

    Keywords: spent nuclear fuel, patent, transportation and storage, transport and packaging containers

  • Qualitatively representative scenarios of the computer simulation of the marketing impact

    An application of the method of qualitatively representative scenarios of the simulation modeling to the solution of the optimal control problems in marketing is described. The idea of the method is the following. We can reduce the enumeration of very big or even infinite number of of scenarios to the very small number of them and receive a qualitatively acceptable picture of the forecasting behavior of the modeling dynamic system. The conditions of verification of the correctness of such reduction are presented. The qualitatively representative scenarios of the marketing impact on the target auduience are proposed for different control problems.

    Keywords: directed graphs, differential games, dynamic control models, marketing research, social networks

  • Econometric analysis of the import volume of the Republic of Kazakhstan

    The article describes a trend-seasonal adaptive model of the time series of the import volume of the Republic of Kazakhstan according to the quarter data in the period from 2013 to 2018. According to the obtained model, the forecast of the imports volume in the value terms for the first quarter of 2019has been made.

    Keywords: Republic of Kazakhstan, import, multiplicative model, exponential smoothing, adaptive model, forecasting, trend equation

  • Associative tools for multidimensional risk assessment

    The possibility of using associative tools to solve the problem of multidimensional risk assessment is substantiated: “language of associations” for the formalized presentation of risk events and risks in the form of information objects in an associative environment; associative environment for the implementation of such assessment procedures. The approach to modeling the processes of multidimensional risk assessment based on the associative environment with its implementation on the FPGA is substantiated.

    Keywords: associative environment, multidimensional risk assessment

  • Software for multifactor regression analysis in violation of the assumption of the normal law distribution of observations

    This article discusses the use of regression analysis in violation of the assumption of the normal distribution of observations. The analysis of the following work illustrated that the theoretical distribution of observations may differ significantly from practical research if normal law is rejected. To solve this problem, which is one of the central ones in statistical analysis, stable estimation methods were studied and applied. Based on the results obtained, a software product was developed that implements this statistical method.

    Keywords: Normal law distribution of observations, stable estimation methods, M-estimates, software implementation

  • Using BIM technologies to create an energy efficient future

    The article describes the main advantages of the use of computer technology and information modeling for the design of energy-efficient buildings. The article deals with the advantages of the use of computer technology and information modeling for the design of energy-efficient buildings. The article also includes a description of the benefits that involves the use of BIM-technologies. The article deals with the problems that can be solved by using information modeling. In addition, the article describes the software products that implement the process of designing energy-efficient buildings. Also, the results achieved by domestic engineers are described. The functionality and usefulness of the method under consideration is unconditional. Many engineers agree that BIM modeling is the most accurate engineering tool to highlight the most energy-efficient processes. The use of BIM-technologies opens up additional opportunities to improve the economy of our country by introducing the method of energy-efficient design.

    Keywords: energy efficiency, BM-technologies, energy modeling, design, construction, exploitation, digital programming, software, three-dimensional model of the building, pre-design stage.

  • Internal structure of cognitive component of students ' perception of propaganda

    The work is based on experimental data obtained during the pilot survey of students of DSTU at the end of 2018. Cognitive components of perception of propaganda were revealed by direct survey, students were asked to characterize the fairness of the policy pursued by the state and the reliability of both Pro-government and opposition political propaganda in General. At the same time, domestic and foreign policies were considered separately. The correlation analysis carried out on these six indicators showed their significant mutual influence. To identify the integral characteristics behind this correlation, we used the method of hierarchy analysis, previously proposed by us such a variety as hierarchical factor analysis. It was found that at the second level, the primary six indicators are reduced to two factors, the indices of perception of missile defense and illegal propaganda. At the third level, the latter two form an integral factor characterizing the cognitive component as a whole. For each level, the priorities of the underlying indicators relative to the upper one are calculated, and the matrices of paired comparisons, both primary characteristics and intermediate ones, are restored. In addition to the internal structure indicators, the paper presents external ones, such as the distribution of the obtained factors of the second and third levels by respondents.

    Keywords: perception, propaganda Pro-government, opposition propaganda, questioning, cognitive attitudes, method of analysis of hierarchies, hierarchical factor analysis, indices of perception of Pro and illegal propaganda, integral index, distribution functions

  • System of automatic control of heat supply of industrial enterprises with the possibility of remote access

    The article proposes a system for automatic control of coolant parameters in the heating system of industrial enterprises. The system is based on PLC 150 series of OWEN industrial controllers.

    Keywords: shut-off and control valves, CoDeSys, shut-off and control valve, proportional-integral-differential controller

  • Technical science. Building and architecture

  • Comparative environmental performance of steel and fiberglass reinforcement

    This article discusses the possibility of improving the environmental situation by changing the percentage ratio of metal and fiberglass fittings produced in the direction of increasing the latter. A comparative analysis of the calculation of the slab basement of 300-mm thickness was carried out, in the construction of which reinforcement made of steel (class A-500C) - and fiberglass were used. The results of the study led to the conclusion that, due to the recycling of plastic waste to produce this innovative building material, there is great savings for the manufacturer, and to this is added an improvement in the environmental situation in general, as the amount of industrial waste on the globe decreases without using environmentally friendly methods. destruction.

    Keywords: Operation and reconstruction, design, construction safety, operation, fiberglass reinforcement, construction

  • Automated building management system as a tool to improve their energy efficiency and comfort level

    The article presents an analysis of the effectiveness of the use in the construction of an automated building management system (ASUZ) as a technical basis for the implementation of the concept of a “smart”, “intelligent” building, and the prospects for using APSS to reduce the energy intensity of buildings are noted. Examples of the interaction of building engineering systems with urban facilities are considered. The authors noted the advantages of using and justified the relevance of the involvement of the automated system in the building management processes, identified reasons hindering the implementation of the Smart House technology in Russia.

    Keywords: smart city, intelligent buildings, energy saving, automated building management system, energy efficient buildings, engineering systems, housing, smart home

  • Comparative analysis of estimated programs used in Russia

    The article presents a comparison of the main programs used in Russia to calculate the cost of construction. Statistics of the most popular estimated programs are given. A brief comparative analysis of the capabilities of the two programs, Grand Smeta and Smeta.ru, is presented. Based on the analysis, recommendations are given for choosing an effective settlement package for creating design estimates.

    Keywords: estimate, construction, estimate programs, program complex, estimate calculations

  • Economic and functional advantages of hinged facade systems

    The article is tasked to consider an increase in the profits of developers due to the use of hinged ventilated facade systems. The design is intended for the device of cladding the facades of buildings with tiles of marble chips on the cement binder and for insulating the walls of buildings from the outside in accordance with the requirements of the current standards for thermal protection of buildings. A comparative analysis of the cost of veneering hinged ventilated facade and brick, as a result of which revealed the economic benefits of using this system. The economic advantages of using a hinged ventilated facade system are achieved by increasing the usable area due to the removal of the facing material to the outside of the building behind the floor slab. The functional advantages of the design are substantiated: original design solutions, effective heat protection and sound insulation, high performance characteristics. On the basis of the analysis performed, the author concludes that the hinged ventilated facade system is a modern design with high aesthetic and thermal characteristics, the use of which can significantly increase the incomes of developers.

    Keywords: pricing factor, competitiveness, increase in revenue, ventilated curtain wall system, facade cladding, effective area, effective thermal protection, effective thermal insulation, reduced heat loss, original design solution

  • Investigation of the air pollution process of the working area of the operator of the drying drum of the brick factory

    The authors analyzed the successive stages of the process of air pollution, built a physical model in relation to the operating conditions of the drying drum of a brick factory, which allowed to determine the features of atmospheric pollution in these conditions

    Keywords: inorganic dust dispersion system, the parameters of the properties of the contaminant, the enterprise of construction industry, health, manufacture of bricks, tumble dryer, power parameters, a physical model of the process of air pollution

  • Derbent defensive system. Historical and architectural review

    The article gives a systematic review of the architectural composition of the oldest capital urban complex of the North Caucasus – the fortress of Derbent. On the material of historical sources stages of urban planning are reconstructed, the role of economic and foreign policy factors in the development of the urban environment in historical retrospect is shown.

    Keywords: industry history, architecture, urban planning

  • About quantitative assessment of quality of installation work

    The article provides a systematic review of measures to improve the quality of installation work. The question of improvement of installation works of building structures is studied. A set of tools for improving the quantitative assessment of installation work is proposed.

    Keywords: organization of construction, quality management

  • Designing flexible architectural forms using reciprocal structures

    The introduction describes the potential of using new technologies in the design of flexible architectural forms from the point of view of the parametric approach. In the second part, attention is paid to the definition of such a concept as the architectural form, function and design. The third part deals with the essence of reciprocity in a structural context. The fourth part is devoted to the application of the parametric concept to rotating high-rise buildings and modular roofs. The possibility of designing such structures in the Grasshopper software environment is investigated. The conclusion assesses the effectiveness of the submitted development.

    Keywords: Architecture, construction, revolving buildings, modular roof, parametric approach, reciprocal structures

  • The use of dispersed reinforcement in low-rise construction of cellular concrete

    Currently, materials made of cellular concrete are increasingly used in construction. The strength of the cellular blocks depend on their densities. According to the test results, the dependence of the strength of aerated concrete samples on their density was obtained. However, if we reinforce the aerated concrete blocks with fiber, we will get very different values. When reinforcing cellular concrete with fibrillated fiber, the dependence of strength on density varies – the strength of the samples increases 1.8 – 2.4 times, compared with the strength of non-reinforced samples at a constant density. This means that when fiber is included in cellular concrete, blocks of such low grades as D300 - D400 can be used for the construction of load-bearing walls in low-rise construction

    Keywords: cellular concrete, aerated concrete, density, strength, reinforcement, fiber, thermal insulation, bearing wall, enclosing structure

  • Porous granular materials based on natural silicites

    Accelerating the pace of construction of modern and affordable housing with energy efficiency class not lower than B +. This implies the creation of technologies that contribute to an increase in the production of relatively inexpensive heat-shielding materials produced from mineral melts, and used in the construction of flat roofs or used coatings. The developed materials possess a complex of valuable operational properties. There is a significant improvement in the characteristics of the material characteristics - thermal conductivity, compressive strength, water absorption by weight and cold resistance. Improving the insulating properties is enhanced when additives are present in the formulations that saturate the system with lead oxide.

    Keywords: energy efficiency, heat protection, silica opoka, fluxing additives, silicon, calcium, high-temperature foaming

  • Additional environmental measures during construction works

    This article discusses the additional environmental measures used in the construction industry to protect the environment. Currently, the necessary environmental requirements that must be met during the construction process are set out in legislative documents. However, there is a sufficient amount of environmental data that is being studied and can be used in the design and construction of facilities. According to the WHO, the limit values ​​for fine dust PM2.5 and PM10 are set separately. The annual mean PM2.5 and PM10 should be 10 and 20 µg / m3, respectively, while the average value of 24 hours should not exceed 20 and 5 µg / m3, respectively. It is necessary to consider the main elements of the environmental assessment of projects for development of the additional measures to reduce the environmental load on the environment during construction works. In practice, during an environmental assessment performing , all these elements are present in the overall assessment system.

    Keywords: " environmental requirements, construction industry, environmental protection, air protection, environmental safety in construction, fine dust, ecology in construction, organization and management in construction, dust pollution, environmental assessment