The paper discusses modern approaches to the mass valuation of real estate, automated systems for typical buildings assessment, and also provides the development of a method for the continuous assessment of real estate objects, which makes it possible to effectively evaluate groups of real estate objects and infrastructure. This research is aimed at studying the economic component of this process - modeling of a system for assessing the market valuation of real estate in typal development objects. The purpose of the study is to develop a system of continuous assessment (mass valuation) of real estate, taking into account the current methodological support of the process of assessing the market value of real estate, and should contribute to the improvement of the comparative approach to valuation in the framework of the practical activities of appraisers, as well as for state regulation of the real estate market.

Keywords: diversification of management, production diversification, financial and economic purposes of a diversification, technological purposes of ensuring flexibility of production

The theoretical aspects of crystallization of multicomponent solid solutions are discussed. Antimonoid heterosystems in which bismuth is present are considered, a component that largely determines the photoelectric properties of the studied materials. The features of establishing the equilibrium of the liquid and solid phases in the process of crystallization of these systems are considered. The laws of the thermodynamic behavior of heterosystems in the conditions of gradient liquid-phase epitaxy are established. The results of experimental studies on the growth of solid solutions of multicomponent bismuthides on InSb substrates are presented.

Keywords: solid solutions, migrating liquid phase, indium antimonide arsenide, gallium bismuthide, binary pair, recrystallization, quasicrystalline structure

The article describes a model that allows to conduct research and justification of the choice of operating modes of departmental network information objects functioning in distributed data transmission networks in conditions of unauthorized actions aimed at overloading network information objects with incorrectly fragmented message packets. The developed model allows to formulate requirements on improvement of indicators of timely granting of service possibilities to subscribers of departmental data transmission networks and also maintenance of availability of the processed information in the conditions of high intensity of an exchange of message packets with incorrect parameters of fragmentation through monitoring of failures (failures) of defragmentation of message packets and adaptation of parameters of a communication route to change of structure (parameters) of a data transmission network.

Keywords: data network, departmental network information objects, IP datagrams, packet fragmentation

The article presents a method for quantifying the survivability of information technology objects, in relation to the means of software and hardware impact, including those based on assessing the ratio of direct and indirect risks, the ratio of the probability of catastrophic failures for a damaged and intact system. The necessity of increasing the survivability of information technology facilities to ensure security in the global cyberspace is grounded. It is also necessary to note that to ensure the required level of integrated survivability of an information technology object, it is necessary to protect them from software and hardware impacts in the global cyberspace. Information-technical objects with high cyber-defiance are gradually destroyed, while maintaining limited performance (combat capability with respect to military systems). This allows you to take protective measures, thereby reducing the effects of exposure mainly to primary damage from damage to the elements of an information technology object. Information and technical objects with low survivability are destroyed sharply and catastrophically, which is accompanied by significant secondary and cascade destruction, which are disproportionate (disproportionate) initiating software and hardware effects.

Keywords: survivability, information technology objects, the infosphere, cyber defensiveness, cybernetic weapons, software and hardware effects, the technosphere

The article describes the specifics of OOP concepts implementation in the open source projects that contain address book model in comparison to OASIS UBL Party Reference model. The open source software analysis is performed using the formal criteria for evaluating the matching between open source project models and reference model based on quantitative characteristics, conceptual graph transformation and cluster analysis. First, the scope coverage, elaboration factor and structural connectedness were calculated based on model parameters. Second, the domain models were represented as conceptual graphs and they were compared based on semantic equivalence. And third, the model was clustered into four subdomains, and quantitative characteistics were evaluated separately for each cluster. Based on the experimental results of model analysis the authors propose methods to reduce the conceptual mismatch between reference model and project models.

Keywords: OOP, semantic analysis, reference model, OASIS UBL, conceptual graph, cluster analysis

This article discusses the possibility of using water wells for water supply of rice irrigation systems. The aim of the study of this work is to study the prospects for the possible use of water wells for irrigation of flood fields of the Krasnodar Territory. This issue has been studied by the example of a water well, which is located in the village of the Black Sea Seversky district of the Krasnodar Territory. The relevance of the study of this issue is expressed in the fact that of all types of agricultural nature management in the Krasnodar Territory, one of the most important types is rice growing. Naturally, in the field of rice production, irrigation sources play an important role, which, in our opinion, include water wells. The relevance of this study is associated with the importance of the production of rice groats, as one of the most important types of agricultural nature management in the Krasnodar Territory and the Republic of Adygea. Irrigation sources are of great importance in the field of rice growing, which consists in the fact that for the irrigation of flood fields, a large amount of water is required, providing a favorable environment for rice growth. At the same time, the quality of rice cultivated directly depends on the qualitative characteristics of the water resources used for rice systems. The value of irrigation sources is that a favorable environment for the cultivation of rice groats is created by water resources, which are used in large quantities for irrigation of rice fields. Water resources used for irrigation of flood fields have a direct impact on the quality of rice cereal, which is grown on irrigated fields. In this regard, there is a need to conduct a study of water resources extracted from water wells for their compliance with sanitary norms and rules, the results of which will be considered in this paper.

Keywords: siltation, reservoir, water resources, floodplain territories, rational water use, water resources

The article considers the historical experience of implementing infrastructure projects in the framework of concession agreements, in contrast to the classical form of interaction with participating states. Certain advantages and prospects of applying formal interaction between the state and the private sector.

Keywords: concession, infrastructure facilities, public-private partnerships, roads

A hydroacoustic waveguide is considered as a linear system with parameters distributed over dis-tance. A method is proposed for modeling the impulse response of a waveguide. The fields of indi-vidual normal modes at fixed frequencies are calculated so that discretization theorems are satisfied. By performing the inverse Fourier transform of the fields of all modes separately, the time realiza-tions are restored. Then, summing the mode fields, the impulse response of the waveguide is calcu-lated. This approach allows you to "turn off" the fields of individual modes, add, if necessary, the fields of higher modes, or to study all fields separately, simulating the operation of mode selection. The impulse response is considered as a tool for solving the problems of inverting the acoustic characteristics of the seabed and modeling the propagation of signals in waveguides. The impulse response of the first mode of the Pekeris waveguide with the bottom in the form of an intermediate layer and half-space is restored, its wave attributes are revealed: ground wave, water wave, Airy wave. The frequency dependences of the group velocity of normal modes and the multimode im-pulse response are restored. Low-pass filtering of the impulse response makes it possible to reveal the Airy phase of the first mode.

Keywords: normal modes, seabed, attenuation coefficient, group velocity, impulse response, intramode dispersion, intermode dispersion

The granulation process of ammophos in a drum granulator-dryer (DGD) is considered. The main factors affecting the granulation process are considered. The inputs and outputs of the mathematical model of the granulation process are determined. A dynamic mathematical model has been developed for the formation of the equivalent diameter of ammophos granules depending on the flow rate and particle size distribution of the external recycle. Graphs of comparison of simulation results with actual data of normal operation are presented. A graph of the dependence of the equivalent diameter of the granules on the flow rate of external recycling is presented. The model is intended to create a system for stabilizing the granulation mode.

Keywords: ammophos, recycle, granulation, particle size distribution, drum granulator-dryer, modelling, mathematical model

The article presents the usage of the semantic network for storing and retrieving information from unstructured sources. The authors describe the semantic network model based on labeled oriented graph, consider basic semantic network elements (concepts, relations and attributes) and basic relation types between elements (hyponymic and meronimic as well as class-instance relations), and define main single and group operations on the network. Besides the method of storing the concept instances and related wordforms and glosses for automated information retrieval from semi-structured sources is provided. The designed semantic network is decomposed into atomic concepts providing absence of stored information redundancy without necessity to apply the normalization procedure. The developed model was applied in several practical tasks, for example in real estate information parsing, the address information system input validation, and information extraction from spreadsheet data. The model was improved and extended based on experimental results.

Keywords: semantic network, graph model, concept, relation, attribute, instance, semi-structured data

This article discusses the possibility of managing environmental and economic risks of investment projects. Environmental efficiency is an important indicator in assessing the effectiveness of an investment project. It is revealed that when assessing the environmental efficiency of an investment project, it is necessary to use the established standards and agreements, normative legal acts in the field of environmental law. However, the legislation in the Russian Federation in the field of environmental risk assessment requires accurate calculations that will facilitate the task of the investor in the field of adoption of an effective investment project. It is analyzed that the final decision on the implementation of the project depends on the quality of the assessment.

Keywords: Efficiency, investment, risk, uncertainty, investment project, ecology, factor, criterion, implementation

The article proposes a method of automatic recognition of the type of building for an environmental monitoring system. based on convolutional neural networks. To train the neural network, the Keras library was chosen, containing numerous implementations of the main components of neural networks, such as layers, target and transfer functions, optimizers, and many tools to simplify working with images and text. The processes of network implementation using the Google Colab cloud platform, the preparation of a training set, the training of a constructed neural network, and its testing during training are described. The result of this work is a convolutional neural network model, capable of determining with accuracy of the order of 90-92 percent what type of buildings is shown on the cartographic image, which allows us to automate this process and use it as a subsystem for the environmental monitoring system of atmospheric air.

Keywords: environmental monitoring system for air, building type recognition, convolutional neural networks, machine learning, computer vision

The authors of the article developed an autonomous energy supply system for remote military facilities and settlements using liquefied natural gas. A characteristic feature of the developed system is a simplified constructive design of cryogenic equipment for liquefied natural gas, increased reliability and service efficiency of an autonomous energy supply system, as well as the possibility of independent operation of a gas engine and a boiler station from each other.

Keywords: Boiler room, liquefied natural gas, military infrastructure facility, autonomous energy supply

issues of optimization of the structure of the container pneumatic transport system are considered. The expediency of combining the functions of the equipment included in the transport system is shown. A functional diagram of a universal module that performs the functions of all blocks of a pneumatic transport system is presented. A block diagram of a microprocessor control system that provides the functioning of the mechanisms of a universal module is proposed.

Keywords: microprocessor system, pneumatic transport system, transport container, stations of the transport system, control algorithm, structure of the transport system, transport pipeline

The Minsk Motor Plant D-245 engines are the most widely used in automobiles and tractor manufacturing in Russia and neighboring countries. These engines are installed on cars of the GAZ and MAZ family, PAZ buses, special equipment manufactured by Amkodor, MTZ tractors, etc. A turbocharger is one of the engines units affects power and environmental performance. The presence of a large number of engines under consideration makes it important for repair enterprises to improve the technological process of repairing turbochargers. A large number of technologies for repair rotor shaft of the turbocharger have been developed to date. However, there is no technology to restore the outer surface of the rotor seal sleeve after they touch the hole of the middle housing. The article presents the results of calculating the stress-strain state of the rotor shaft of a turbocharger, taking into account the installation of an additional (repair) part as a turbine seal sleeve. The analysis of the created solid-state model was carried out using of the SolidWorks Simulation system. The calculation was carried out at various shaft diameters for bearings. The study found that the voltage in dangerous sections of the rotor shaft with the installed repair sleeve is higher than without it. However, they are much lower than the permissible torsional stresses. Therefore, the probability of destruction of the rotor shaft during normal operation of the turbocharger, due to the occurrence of a resonance phenomenon, even with the minimum allowable diameter, will be very small. The presented data allow the use of this repair method to restore the operability of the rotor shaft of the TKR-6 turbocharger.

Keywords: engine, turbocharger, defect, repair technology, additional part, repair sleeve, stress-strain state, solid-state model, dangerous section, permissible stress