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  • Application of Agile methodology when working together on UI/UX projects in a specialized layout editor

    For prototyping virtual resources, there are modern UI/UX development applications that have the means to build highly productive interaction algorithms, for example, Figma or its promising new competitor Pixso. These programs support the joint redating of projects, and also allow planning and discussion of ideas and stages of work here, in the environment. The correctly chosen method of interaction leads to a multiple increase in productivity. One of the recognized approaches to project planning and management is the Agile design methodology.

    Keywords: team, layout, prototype, website, methodology, formal language, brainstorming, frame, project, interface, plugin, editor

  • Decision support for choosing a strategy in the digital technology market

    The work is devoted to the problems of strategic planning in the digital technology market. The aim of the work is to build a decision support procedure for choosing a strategy, based on internal (related to the characteristics of the firm choosing the strategy) and external (conditioned by the state of the market) factors. It is assumed that the elementary strategy is described by the type, direction and applied area of activity. In this case, the possibility of combining several elementary strategies is considered. The main result of the work is a procedure for choosing a combined strategy based on the application of a genetic algorithm. The use of the methodological apparatus of evolutionary calculations is due to the large number of possible options for combined strategies and the complexity of their evaluation, which makes a complete enumeration of options impractical. The final choice is made by the decision maker based on their own preferences.

    Keywords: IT market, decision support, genetic algorithm

  • Determination of seismic load when exposed to aboveground steel gas pipelines

    The article considers the influence of seismic load with different ballistics on aboveground steel gas pipelines of various diameters in areas of possible earthquakes. The change in the proportion of seismic load to the total load acting on gas pipelines during operation is investigated.

    Keywords: seismic activity, loads on gas pipelines, analysis of seismic activity, degree of seismic hazard

  • The use of cluster analysis in the formation of a statistical sample of objects of a stationary trade network in the establishment of standards for the accumulation of municipal solid waste

    The reliability of assessing the amount of accumulated waste in the context of an imperfect scientific and methodological base for standardizing MSW, in the absence of generally accepted calculation methods, is not high enough. The possibility of using cluster analysis in the formation of a statistical sample of objects of a stationary trade network in setting standards for the accumulation of municipal solid waste is shown. A methodology for the formation of a representative statistical sample of objects of a stationary trading network has been developed when setting standards for the accumulation of solid municipal waste based on cluster analysis.

    Keywords: waste accumulation, municipal solid waste, MSW generation standard, stationary trade network object, cluster analysis, representative sample

  • Characteristics of the process of accumulation of municipal solid waste at retail facilities of a stationary trading network

    The problem of developing an optimal waste management system is very relevant in many countries. To solve it, it is necessary to study the processes of waste accumulation, to systematize the factors and conditions that affect the generation of waste, to determine the features of establishing waste accumulation standards for various objects. The article discusses the features of the accumulation of municipal solid waste and the establishment of standards for their accumulation for stationary objects of the distribution network.The volume and mass values ​​of daily indicators of accumulation of MSW from a trading area of ​​a certain type and the total value of accumulation indicators (over the entire trading area) are found. The formats of retail facilities with the maximum average daily indicators of MSW accumulation have been established. Standards for the accumulation of MSW for the category under consideration have been established for 1m2 of retail space with food products, 1m2 of retail space with non-food products.

    Keywords: waste accumulation, municipal solid waste, MSW generation standard, stationary trade network object, volume indicator, mass indicators

  • Configurable test environment for RTL simulation and performance evaluation of Network on Chip as part of SoC

    Nowadays, the System on Chip (SoC) industry is rapidly developing. One of the objectives of SoC developers is to provide the most efficient communication between computational units. One of the possible solutions is using Networks on Chip (NoC) of various topologies with different routing algorithms. In this paper, a configurable test environment designed for cycle-accurate NoC simulation as part of a SoC, used to provide statistics about network behavior during test process, is presented. The environment is designed to evaluate NoC performance as part of a specific SoC at the development stage, when there is a full or partial RTL description of the system. The environment configuration options, its application area, general scheme and calculated NoC performance characteristics are considered. As a conclusion, an example of using the environment to evaluate the performance of a specific NoC is described in detail.

    Keywords: network on chip, system on chip, performance evaluation, verification

  • Determination of the storage capacity of the gas pipeline in case of an emergency stop of gas supply

    The analysis of accidents on the main gas pipelines was carried out. The mathematical dependences of the volume of gas located in a gas pipeline of various diameters are determined. A nomogram is proposed to determine the volume of natural gas located in certain sections of the gas distribution network.

    Keywords: gas pipelines, accident rate, degassing, gas bleeding. gas compressibility factor

  • Static refined models of field-effect transistors with controlled transition junction bands from various semiconductors

    The paper analyzes the output parameters of field-effect transistors with a contact gate (controlled junction (p-n junction or Schottky gate)) both from modern highly mobile semiconductors (such as AIIIBV, AIIBVI, etc.) and semiconductors such as Si, Ge. It is shown that when the span regions are reduced to micro- and nanoscale values and conditions for the action of strong electric field strengths arise, it is necessary to take into account the dependence of carrier mobility on this field. Comparative analyses of the obtained results with the classical known ratios are carried out.

    Keywords: effective mass, drift velocity, electric field strength, mobility of charge carriers, kinetic energy, current-voltage characteristic, field-effect transistor, sub-gate drift region, threshold field of the Gann effect, saturation field strength

  • Analysis of forest machines production in Russia

    At present time, there are attempts to design and produce forest machines of highly-demanded classes in Russia. The paper evaluates the efficiency of forest machines under identical operating conditions. The analysis showed the possibility of using harvesters and forwarders of joint Belarusian and domestic production for logging works as an alternative to foreign forest machines. Evaluation of proposals revealed advanced Russian and Chinese models of forest machines. The research showed that in our country there are prerequisites for the development of forestry machine-building, while the main problem is the lack of production technologies for the manufacture of modern technological equipment and components. Under these conditions, the evolution of production on the national territory of forest machines and technological equipment without involving domestic or foreign capital and innovative technologies is a difficult task.

    Keywords: domestic forest machine building, development prospects, forest machines, production

  • Model of brinkmanship and its simulation study

    The topic of balancing on the brink is extremely relevant under present conditions of the real threat of nuclear war. A game-theoretic model is presented that describes the process of brinkmanship using the Caribbean crisis as an example. The results of research on such models and, accordingly, recommendations for decision makers depend significantly on the specific numerical values ​​of the players' payoffs and the probabilities of certain events. Therefore, it is advisable to develop a software package that allows you to set different values ​​of these parameters and conduct simulations for various control scenarios. The article proposes a program for implementing this approach.

    Keywords: brinkmanship, extended form games, simulation

  • Study of seasonal unevenness of gas consumption for the shopping and leisure complex

    The issues of seasonal unevenness of gas consumption for the needs of heating, ventilation and hot water supply of the shopping and leisure complex are considered. Calculations of volumetric and power indicators of uneven gas consumption for 2020-2022 are given according to the data of the archive of gas consumption meters.

    Keywords: gas consumption, uneven gas consumption, volume, capacity indicators, shopping center

  • Development of an intelligent lighting control device for industrial enterprises

    Electronics is the most capacious and rapidly developing industry in our country. Modern methods of designing electronic devices are unthinkable without the use of computer technology, in particular, specialized programs for computer analysis and modeling of circuit diagrams of the devices being developed. Intelligence is the key link in electronics at the present stage of its development. This is due to the emergence and widespread adoption of microcircuits such as microcontrollers. This aspect provides fundamentally new opportunities for solving a wide variety of tasks, including tasks of a strategic orientation that require prompt solutions. All this became possible primarily because devices based on a microcontroller require algorithmic and further software, which makes it possible to create intelligent systems and devices. One such device will be discussed in this article. The developed device is a system consisting directly of a control system, an actuating device, which is a decision-making device, a power unit and peripheral devices. The article explains the idea, the principle of operation of the developed device, the structural and schematic diagrams of the developed main blocks of the device, as well as their algorithmic support, which is based on the principle of intelligent control. The developed device is designed to automatically maintain the level of illumination at the level set by the operator in the premises of industrial enterprises.

    Keywords: intelligent control, sensor unit, binary code, synchronization circuit, transistor switch, bus driver, optosimistor, control system, actuator, power unit

  • Modeling of wind impact on a public building

    The design of energy-efficient buildings is based on the analysis of the external climatic effects on buildings for various purposes, the parameters of the air environment inside which are well defined. Climate systems of buildings should neutralize the negative impact of the external environment, in particular wind exposure. It determines both the temperature regime of the room and the purity of the air inside them. The complexity of both theoretical research and the organization of field experiments or blowing models of buildings in a wind tunnel makes it necessary to resort to mathematical modeling of the wind impact on the school building based on the StarCCm+ program. Velocity fields were obtained for different directions of wind load, the excess heat loss of the building in certain directions was determined. The possibility of conducting such studies in a wider range of initial and boundary conditions is shown.

    Keywords: aeration of residential buildings, mathematical modeling

  • Analysis of the results of the experiment to assess the quality of mixing dissimilar fibers

    The article presents the results of a full-factor experiment and analyzesthe impact of various factors, such as the number of transitions a tape machine, the characteristics of an infrared laser diode and a the humidity of the material on the magnitude of the signal response when infrared radiation passes through the tape.

    Keywords: fiber mixing quality, infrared estimation method, planning matrix, regression equation, model adequacy

  • Improvement of the installation technology of the insulating lining of the radiant chamber of the natural gas steam reforming furnace

    The paper presents the properties and nomenclature of products made of ceramic fiber used for insulating lining in steam reforming furnaces. On the example of the lining of the radiant chamber, the technology of mounting ceramic blankets on anchor studs, which is currently used in the construction and repair of reforming furnaces, is considered. The shortcomings of the existing technology are noted. These include the complexity of the process, the complexity of installation control and the high probability of uneven thermal conductivity of the lining surface due to hidden defects, as well as the spraying of ceramic fiber particles in the air that cause diseases. The nomenclature and technology of installation of insulating lining with ceramic blocks along guide tubes with subsequent resistance welding with the camera body is proposed. The technology will reduce the repair time, improve the thermal conductivity of the camera, reduce the risk of diseases.

    Keywords: gas reforming, radiant chamber, insulation lining, ceramic fiber, thermal conductivity of the furnace