In this paper, the results of modeling the system "vibrating roller - compacted asphalt concrete" are considered. The analysis of the state of the quality of compaction of asphalt concrete mixture by the method of continuous control of compaction of asphalt concrete, as well as the influence of the behavior of the fluctuating mass of the roller on the viscosity properties of asphalt concrete is given. A mathematical model has been developed that allows taking into account the influence of asphalt concrete properties changing during the compaction process on the vibration characteristics of the vibrating roller. The spectrum of accelerations of the vibrating roller and the graph of the dependence of the stress of the asphalt concrete mixture in the compaction process are obtained. The developed model makes it possible to determine changes in the properties of the compacted material and the nature of vibrations of the vibrating roller. It is determined that with an increase in the value of the stiffness coefficient of asphalt concrete, the acceleration spectra of the vibrating roller also change. When the vibrating roller is in constant contact with the surface, only the harmonic at the operating frequency of the vibrating roller is visible on the acceleration spectrum, without the manifestation of other harmonics and subharmonics.

Keywords: vibration roller, asphalt concrete, material compaction, dynamic model, vibration characteristics, acceleration spectrum

The article presents the results of the study of the ventilation device. A system of automatic control of the process of regulating air exchange in a residential area has been developed, which allows you to control an element of the actuator, which increases the productivity and efficiency of the ventilation device. An automated module of the process of regulating air exchange in residential buildings has been developed, designed to control the regulation of air exchange and its determination in residential buildings in different periods of the year. The software module implements recalculation of the main heat and humidity parameters of the air.

Keywords: air exchange, automated module, automatic control, ventilation device

The article discusses the stages of entity allocation for constructing an ANN description language that simplifies the exchange of ANN between people. The developed language reduces the task of migrating the ANN between different hardware and software technologies to the task of converting a text description to the required platform, which is much easier to develop intelligent models. As a result of minimizing the set of entities, a language consisting of a dozen and a half tags was obtained that allow describing the most popular ANN models used for classification and pattern recognition tasks.

Keywords: artificial neural networks, neuron, synapse, multilayer perceptron, INSML, forward calculation, mathematical modeling

The article presents economic indicators characterizing the introduction of robots of various types into the global industry, describes the legal aspects of the existence of a digital personality in society, talks about the perception of robots as a living person, describes legal ways of interpreting "robot rights".

Keywords: robot, society, robot rights, artificial intelligence, legal aspects of robot rights

The article deals with the problem of improving the traffic management system. In the AnyLogic environment, the workload of a traffic flow is simulated with the calculation of the throughput efficiency. By varying the parameters of the agent-car and the traffic light control system, the optimal values ​​for the duration of the signals are revealed and the shortest time for crossing the intersection is achieved.To analyze the workload of the selected section of the city of Volgograd, a cartographic service was used. An experiment was conducted on a quantitative model, in the form of measuring the parameters of a car stream at different times of the day. The search for the optimal solution to the traffic control problem on a specific section of the road in Volgograd was carried out, for which variable parameters were selected, the objective function was determined in the form of waiting time at the intersection, and the solution of the problem was obtained in the form of traffic light switching times. The advantages of the method include the visibility of the model and ease of use.

Keywords: bandwidth efficiency, vehicle agent, traffic model, intersection management, simulation

Compaction is one of the most important technological processes in in the asphalt (AC) pavement construction. Joint management of asphalt pavers and several rollers, allowing each roller to seal the road layer most efficiently with optimal compaction modes to ensure the required compaction quality, is an unsolved problem. To solve this problem, on the basis of modern achievements of scientific and technological progress, a cyberphysical system is proposed as an organizational and technical concept of information flow management. The structure of the system for monitoring and controlling the compaction of AC mixtures with a set of pavers – road rollers is proposed. The development of a cyberphysical road construction system makes it possible, based on digitalization, to effectively manage several road vehicles on the construction sites of road transport infrastructure projects for joint and adaptive compaction.

Keywords: compaction of asphalt mixtures, real-time quality control, road vehicles, cyber-physical system, control system

The paper presents an evaluation of the efficiency of the use of road trains for transporting fuel chips during operation in real natural and industrial conditions through the variability of the coefficient of adhesion weight (kst). The authors of the paper note that the transport and transposing aspect of the technological process is especially important in the formation of efficient technological chains for the production of biofuels and, in particular, wood chips for energy purposes. The analysis showed that it is rational to use wood chip trucks based on all-wheel drive vehicles (6x6) to ensure movement in all modes when operating in complicated and challenging conditions on road surfacing in an unsatisfactory condition. Vehicles for transporting wood chips for energy purposes, manufactured in Russia and Belarus, are at the level of foreign analogues in terms of the main technical and economic indicators, and in some cases surpass them.

Keywords: forest bioenergy, transportation of fuel chips, wood chip trucks, cohesive weight coefficient, cross-country ability

The article presents an approach to the development of a case-based decision support system for assessing the safety of a section of a city's transport system. To store the database of precedents, it is proposed to use an OWL ontology. The use of the ontological approach allows a more accurate interpretation of the subject area, and over time will expand and supplement information about the precedent. The precedent structure is defined. The ontology architecture is given: classes, properties and instances. An example of filling the ontology with precedents is given, using the example of the city of Volgograd. Measure of proximity to compare precedents is proposed. The procedure for adding new precedents to the knowledge base is considered. With the help of the developed decision support system, it is possible to assess the safety of both individual road sections and the entire transport infrastructure of the city.

Keywords: ontology, reasoning by precedents, transport, transport security

In recent years, the use of various tools based on machine learning in the process of writing the source code of various programs, interfaces, and websites has been gaining momentum. These include programs that help in testing applications, programs that analyze the developer's code, as well as assistant programs that help write code right in the process, predicting and prompting the developer with options for the finished program code. In this article, just the same, such assistant programs will be considered in order to analyze the shortcomings and justify the need to develop functionality in this direction.

Keywords: source code, machine learning, neural networks, application testing problem, natural language processing

The article examines the issue of calculating the depth of compression stresses when using a spherical indenter in order to increase the fatigue strength of steel parts. When the spherical indenter is pressed, elastic deformation of the surface first occurs, and then plastic one. The residual plastic deformation is expressed in the size of the print. The physicomechanical properties of the processed material are not taken into account, the process of pressing a spherical indenter into a steel sample in the ANSYS program is modeled by the final element analysis (FEA).A bilinear deformation diagram was fed, which is set in the program by the modulus of elasticity, yield strength and Poisson's ratio. At the next stage, a finite element grid was generated by using the Hex Dominant Method, which divided the model into elements in the form of hexahedra of various sizes. In the contact area, the size of the finite elements was 0.2 mm. The results of calculations of analytical and numerical methods for spherical indenter diameters of 4, 6, 8, 10 mm and various degrees of plastic deformation to determine the depth of compression stresses are presented, compared with known data, the error is calculated. A dependence is derived for a preliminary assessment of the occurrence of residual stresses depending on the diameter of the well after the indentation of the spherical indenter.

Keywords: spherical indenter, bilinear deformation diagram, plastic deformation, indentation depth, compression stress

Software algorithms for a microprocessor device for active control of the grinding process of bearing rings have been developed.

Keywords: grinding, active control, microcontroller, active control device, active control device software

With the right approach, the heat generated by chillers in an indoor ice rink can be used to melt ice, a dehydration system, or to heat a concrete pad under a layer of ice. In this way, energy can be saved. For the purpose of accumulation and subsequent distribution of thermal energy in the building, a reservoir that accumulates heat can be used. Heat is removed from the chiller condenser by a water cooling circuit, which is connected to the coil of an indirect heating boiler (heat accumulator). The coil heats the water that circulates in the heating circuit. Since the load on the ice can change during the day, heat extraction will occur in different amounts. For efficient transfer of thermal energy from one heat exchanger to another, it is necessary to control the speed of rotation of the pump impeller so that the controlled function is maximum. If the speed is insufficient, then the heat exchange flow will receive less heat. On the contrary, if the drive drives antifreeze too quickly, then the coolant will not have time to heat up. A mathematical model of the system was compiled from a plant condenser and a boiler with heated water, a dependence on the speed of the coolant (antifreeze) and the temperature difference at the inlet and outlet of the accumulator was revealed.

Keywords: heat accumulator, temperature control, shell-and-tube heat exchanger, optimal regulator, freon

Currently, Russian Railways (RZD) is characterized by an increase in the weight of trains, an expansion of the fleet of sections with high-speed movement of electric rolling stock. All this leads to the complication of the modes of operation of the power supply system, increased responsibility and possible damage from the downtime of trains. Of particular importance are the monitoring systems of the contact network, as an element of the power supply system that does not have a reserve. A significant number of Russian Railways sections are subject to the formation of ice and, as a result, possible serious operational risks and costs. One of the directions of minimizing the damage from the formation of ice and measures to eliminate it, according to the authors, is automation. The article provides an assessment of the possibility and directions of automating the fight against ice on the basis of ice detection systems at the early stages of education.

Keywords: power supply system, correct functioning, automation, ice detection system, contact network monitoring

Designing function interface in the form of function prototype is an important skill in programming. In this article, we discuss the problems of designing function prototypes in the C programming language. This learning task requires performing 5 different steps. Students can make mistakes at each step. These mistakes can concern misconceptions of function's action, identification of data elements, determining of conceptual-level data types for data elements, data elements' directions, inconvenient naming of function and parameters, and syntax of the C language. Modern solutions for analyzing program code and checking student-written code do not detect all these mistakes in the function-interface design. Existing approaches are based on general solutions for seeking errors in program code so they cannot provide informative feedback about semantic mistakes in designing function interfaces. We propose developing an automatic tutor which should guide students through the process of designing function prototypes step by step, detecting and explaining mistakes at each step and providing hints to help fixing the found mistakes. The tutor should allow natural variability in the function interface. In order to deal with various possible representations of the data passed to and from function, the tutor should work with a formal subject-domain model and a model of the target programming language.

Keywords: automatic tutors, requirements for tutoring systems, introductory programming learning, tasks with complex result, multi-step tasks, online education, mixed education, automatic grading

An ontology is a formal, explicit specification of a shared conceptualization of some fragment of domain, which is understandable for both people and intelligent systems. However, it is rather complicated for a domain expert with limited ontology expertise to create complete and consistent ontology, which could answer required competency questions. In this paper we consider the approach with the use of ORM2-diagram as an intermediate model for creating an OWL2-ontology. This approach requires specialized conversion rules allowing to map ORM2-diagram into OWL2-ontology. In this study we revealed that existing conversion rules do not comply with ORM2-semantics. We improved existing conversion rules for Entity Type and Subtyping elements of ORM2 notation. Also we automated the process of mapping ORM2-diagram (consisting of base elements of ORM2 notation - Entity Type, Value Type, Subtyping, Unary Role, Binary Role) into OWL2-ontology as well. As result of this study, we developed a software component, which is part of plugin for ontology editor Protégé. This paper also describes an experiment that confirms the effectiveness of the developed module. It is proven that module allows to exclude mistakes encountered in conversion ORM2-diagram to OWL2-ontology and to reduce conversion time as well.

Keywords: explicit knowledge representation, visual model, intermediate model, ontology modeling, ontology, OWL2, ontological pattern, ORM (Object-Role Modeling), ORM diagram

The paper proposes and calculates a scheme of a two-stage gas turbine plant using carbon dioxide as a working fluid in the second stage and using heating of the CO2 circuit, as well as heating water sent for heating. As a result, the following were calculated: for the first stage turbine: parameters of fuel combustion products; air compressor parameters; fuel compressor parameters; combustion chamber parameters for a real Brayton cycle; Efficiency of the first stage turbine; for the second stage of the gas turbine: a schematic diagram was drawn up using liquid CO2 as a working fluid; calculation of CO2 parameters at key points of the Brayton cycle; the efficiency of the turbine of the second stage is calculated.

Keywords: energy efficiency, gas turbine plant, carbon dioxide, pressure, pressure ratio, combustion chamber, recuperator

Currently, the estimated (marginal) cost of construction is calculated using aggregated construction price standards. Since the objects on the basis of which the collections of enlarged construction price standards were formed were calculated using the basic-index method, the standards do not reflect the real cost due to an imbalance between the standards and real prices. To solve this problem, it is proposed to form a database of completed projects that were built using information modeling technologies, and the estimated cost was calculated using the resource method. As it is filled, this database can become the main tool for determining the estimated cost of construction or the basis for updating collections of aggregated construction price standards.

Keywords: aggregated construction price standard, basic-index method, resource method, information modeling technologies, digital information model, database

The article describes a device designed to measure the shielding coefficient of a magnetic field in the near zone and its dependence on the frequency of changes in the magnetic field. The screening coefficient is measured taking into account the nonlinearity of the characteristics of the material from which the magnetic screen is made. The test action generation module sets the current flowing through the coil containing a superposition of DC and AC signals. The presence of a constant component in the test exposure makes it possible to compensate for an external constant or slowly changing magnetic field and thereby reduce the error in determining the shielding coefficient. The results of measuring the frequency dependence of the magnetic field shielding coefficient in the near zone, as well as the main characteristics of the created device are presented.

Keywords: screening coefficient, nonlinear magnetometer, screening coefficient meter, magnetometry, digital attenuator, hall magnetometer, magnetic field compensation

The presented paper provides an overview of approaches to automation of the drying process in the fluidized bed mode. The technological process of drying potassium chloride in a fluidized bed apparatus at a potash plant is considered as an object of control. During the analysis of the control object, it was noted that, according to the generalized opinion of the technical staff of the production in question, standard control algorithms (PID controllers) are not effective enough in the task of automatic control of the thermal regime of the potassium chloride drying process. The control of the thermal regime in the production under consideration is carried out by the operational personnel in manual mode, by manipulating the flow rate of the drying agent. The need to simultaneously solve and take into account many different kinds of process control tasks in the drying compartment leads to the fact that the operator is physically unable to constantly ensure accurate maintenance of the thermal drying regime in accordance with the regulations in conditions of fluctuations in the consumption of wet crystallized, which reduces the quality of the drying process control and leads to overspending of fuel gas. Analysis of the conditions and results of the operation of the production in question showed that standard algorithms are not able to provide the required quality of process control. The use of more advanced methods and algorithms of automatic control is required. A review of literature sources shows that the solution to the existing problem can be found based on the use of algorithms that meet intelligent automatic control systems. One of the modern approaches to automation of complex, informationally weakly deterministic technological processes is the intellectualization of the control system. Intelligent control algorithms are considered to be built on the basis of models for the representation of expert knowledge. Such algorithms are able to maintain operability in conditions of non-stationarity of process variables and incompleteness of the observed information about its state." "The presented paper provides an overview of approaches to automation of the drying process in the fluidized bed mode. The technological process of drying potassium chloride in a fluidized bed apparatus at a potash plant is considered as an object of control. During the analysis of the control object, it was noted that, according to the generalized opinion of the technical staff of the production in question, standard control algorithms (PID controllers) are not effective enough in the task of automatic control of the thermal regime of the potassium chloride drying process. The control of the thermal regime in the production under consideration is carried out by the operational personnel in manual mode, by manipulating the flow rate of the drying agent. The need to simultaneously solve and take into account many different kinds of process control tasks in the drying compartment leads to the fact that the operator is physically unable to constantly ensure accurate maintenance of the thermal drying regime in accordance with the regulations in conditions of fluctuations in the consumption of wet crystallized, which reduces the quality of the drying process control and leads to overspending of fuel gas. Analysis of the conditions and results of the operation of the production in question showed that standard algorithms are not able to provide the required quality of process control. The use of more advanced methods and algorithms of automatic control is required. A review of literature sources shows that the solution to the existing problem can be found based on the use of algorithms that meet intelligent automatic control systems. One of the modern approaches to automation of complex, informationally weakly deterministic technological processes is the intellectualization of the control system. Intelligent control algorithms are considered to be built on the basis of models for the representation of expert knowledge. Such algorithms are able to maintain operability in conditions of non-stationarity of process variables and incompleteness of the observed information about its state.

Keywords: fluidized bed drying, potassium chloride, control, process automation, PID, intelligent control algorithmsfluidized bed drying, potassium chloride, control, process automation, PID, intelligent control algorithms

A comparative analysis of the possibilities of using woven composite materials with specified sensory properties as information and measurement systems of the industrial Internet of Things (IIoT) is presented. It is proposed to consider such woven sensor systems as a basis for building a network interaction environment for components of wireless wearable sensor networks, as well as systems for monitoring the stress-strain state of products made of woven composite materials. To impart sensory qualities to such multilayer 3D fabrics at the stage of their development, it is proposed to modify their structure by introducing threads, on the one hand, having the properties necessary for the formation of data transmission channels, and on the other, being piezoelectric sensors, whose signals allow monitoring the dynamics of changes in the stress-strain state of a woven composite material.The release of a functionally augmented 3D fabric in this way opens up real prospects for conducting a full-scale experiment to study the sensory properties of spatially extended products made of woven composite materials.

Keywords: Wireless Body Area Networks, fabric sensors, textile sensors, Sensor Networks, E-textiles, Smart fabrics, woven composite materials, sensor data acquisition, Internet of Things

Studies of the possibilities of BIM modeling in the field of ventilation systems design show that the current level of development of BIM technologies allows for aerodynamic calculation. An example of software with such capabilities is Autodesk Revit. This article provides a comparative analysis of two calculation methods: according to the standard methodology and the Colebrook formula, calculated on Revit software. The calculation error was 14.08%, which does not exceed the permissible value of 15%. Thus, the prospects of using the Revit program to perform aerodynamic calculations are shown.

Keywords: BIM-modeling, ventilation systems, 3D design, Autodesk Revit, aerodynamic calculation, BIM-technologies, information modeling

From the point of view of practical value, the definition of emotions in a person's voice can be applied in various areas related to both the transmission of audio messages and online communication: such areas include medicine, security, economics, education, etc. As a striking example, we can provide an assessment of the quality of work of call-center operators, as well as the services / goods they offer. So the presence of signals that the client is experiencing negative emotions, for example, anger, can indicate possible problems with the operators. In this paper, a neural network approach will be considered for automatically determining a person's emotions from his speech.

Keywords: neural network, emotion detection, speech, classification, deep learning, convolutional model

The creation of information system for automation of sales in a car dealership is described. The life cycle first two stages are given. The analysis of the subject area and AIS design with the use of the methodology of the structural approach was carried out. IDEF0 AS IS model was built, using CASE technology BPwin. The analysis of this model allows us to identify its "bottlenecks" and formulate the TO BE car dealership model requirements. The re-engineering was done and TO BE model was built taking into account the identified shortcomings. DFD-diagram was constructed depicting the data flows in the projected information system . The database design in ERD-diagrams form was made on DFD basis. Using CASE-technology Erwin Data Modeler, one can create automatically the database structure in the selected DBMS MySQL in the form of linked tables totality. The user interface design of the car dealership information system was also made.

Keywords: subject area analysis, design, information system, structural approach, reengineering, CASE tool, IDEF0 diagram, DFD diagram, ERD diagram

From the point of view of practical value, data collection in priority areas of sites can be used by designers and owners of web resources to increase the conversion component of a web resource. Information about which areas on the site are most interesting to the user can indicate the places where the most important design elements need to be placed. In this paper, we will consider the method of data collection using an oculoscope in the priority areas of sites.

Keywords: usability, view, website, eye tracker, heat map

To consider the possibility of saving resources from the introduction of an automated process control system (APCS) of a boiler plant with plasma ignition of coal for increased efficiency in the conditions of the Far North. To investigate automated control systems for boiler installations with various options for preparing coal for plasma ignition of the boiler, to consider their main advantages and disadvantages. To substantiate the need for the introduction of automated process control systems of a boiler plant of increased efficiency. Based on the literature review and the results of the calculation of economic efficiency, to develop a plan for the implementation of an automated control system of a boiler plant of increased efficiency for the conditions of the far north.

Keywords: energy resources, power engineering, boiler plant, automated control system