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Submit scientific paper, scientific publications, International Research Journal | Meždunarodnyj naučno-issledovatel’skij žurnal

ENGINEERING

ISSN 2227-6017 (ONLINE), ISSN 2303-9868 (PRINT), DOI: 10.18454/IRJ.2227-6017
ПИ № ФС 77 - 51217, 16+

ANALYSIS OF FILTER MODES FROM WATER JET WITH THE USE OF GEOMEMBRANE IN ITS BASIS

Posted in 2020, ENGINEERING, Issue № 01(91) January 2020 | 0 comments

This paper considers the problem of violation of filtration modes. The authors carried out filtration calculation and the analysis of the anti-filtration geomembrane of the underground water circuit of hydraulic structures. A conformal mapping of the region resistance coefficient (ζ) to the complex filtration potential was converted to determine the resistance coefficients of the filtration area of the antifiltration geomembrane at the base of the underground water circuit. The resistance coefficient was calculated for the case of analytical connection, design schemes of an anti-filter screen were used, in the base with permeable fastening, with any other area of the simplest outline with the known ones. Performing simple transformations, assuming successively that 27-01-2020 14-07-24, we obtain 27-01-2020 14-08-06, respectively, and proceeding from this the maximum pressure gradient, we find that the first derivative is equal to zero. The resulting dependence has the same structure as the well-known R.R. Chugaev’s formula for the output ledge and channel, obtained by him based on the hydromechanical solution of S.N. Numerov. With practical ratios 27-01-2020 14-08-33 the resistance coefficient at the output from the horizontal screen will be 10% lower than for the ledge. The pressure at the end of the underground circuit development decreased to 27-01-2020 14-08-57= 43%, while the output gradients decrease by 27-01-2020 14-09-25= 30 … 50%.

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ANALYSIS OF VULNERABILITY DETECTION METHODS IN THE FIRMWARE OF IOT DEVICES

Posted in 2020, ENGINEERING, Issue № 01(91) January 2020 | 0 comments

Relevance and statement of the problem: Today vulnerabilities in the firmware of the Internet of things devices constitute a serious threat, since attackers exploiting vulnerabilities gain remote access to devices, which allows them to form botnets, which are then used to capture new devices or organize serious DDoS attacks. At present, there is an urgent need to improve the effectiveness of methods for identifying vulnerabilities in embedded software. The purpose of the work is improving the efficiency of the vulnerability detection process in the firmware of IoT devices. Methods used: the solution to the problem is the full or partial automation of the stages of vulnerability search according to the OWASP Firmware Security Testing Methodology 2019 methodology in the firmware of the Internet of things devices. Novelty: elements of practical novelty are the solutions proposed in the work, which allows automating individual stages of the vulnerability search process.

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SECOND LAW OF THERMODYNAMICS – THE MOST IMPORTANT LAW OF NATURE

Posted in 2020, ENGINEERING, Issue № 01(91) January 2020 | 0 comments

The paper is devoted to the second law of thermodynamics. Scientists believe that it establishes the existence of entropy as a function of the state of the system. However, based on recent studies, the interpretation of this law can be called into question. Is it currently applicable? The article discusses its main formulations, presents formulas for calculating entropy, and reveals the relationship of the second law to thermal efficiency. Based on the information received, the authors draw a conclusion on the importance of the second law of thermodynamics and its role in modern science.

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USE OF INFORMATION TECHNOLOGIES FOR THE ASSESSMENT OF TECHNOLOGICAL QUALITIES OF WHEAT GRAIN

Posted in 2020, ENGINEERING, Issue № 01(91) January 2020 | 0 comments

The article describes an automated system for monitoring the quality of grinding as well as taking managerial decisions. It is based on the express analysis of geometric characteristics of particles of ground wheat. Computer vision techniques are used when generating data related to the shapes and sizes of particles. Established empirical relationships enable the evaluation of the hardness of grain with an accuracy of at least 3%, while the amount of gluten comprises at least 3.8%, its quality – at least 4.5%. Due to the efficiency of the ongoing identification of technological qualities of grain processing products, there is a possibility of correcting the grinding and production of products with specified consumer properties.

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COMPARISON OF DIGITAL PHOTOGRAPHS RECEIVED FROM UNMANNED AERIAL VEHILES AND ARTIFICIAL SATELLITES OF THE EARTH

Posted in 2020, ENGINEERING, Issue № 01(91) January 2020 | 0 comments

This article discusses the topic of processing digital images from unmanned aerial vehicles. Digital photography has become very popular in many areas of human activity. Currently, it is considered one of the easiest ways to photograph during processing and is characterized by the high image quality. Processing takes place in different ways depending on the field of activity. The most famous and simplest ways and means for processing digital photographs are used by everyone at least somehow connected with this field of activity.

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RESEARCH OF CORROSION PROPERTIES OF PEO-COATINGS ON MAGNESIUM ALLOYS OBTAINED IN VARIOUS ELECTRIC MODES

Posted in 2020, ENGINEERING, Issue № 01(91) January 2020 | 0 comments

The article studies corrosion properties of the samples from magnesium alloy AZ31 without coating and with oxide coating received with the help of plasma electrolytic oxidation. As a result of oxidation, a significant decrease in corrosion currents is obtained. Differences in the shapes of polarization curves for samples with coatings obtained in pulsed unipolar and pulsed bipolar processing at a frequency of 3-3.5 kHz are considered. Coatings formed in a pulsed unipolar mode showed less resistance to pitting corrosion.

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WAYS OF INCREASING RESISTANCE OF SILICATED LAYERS

Posted in 2020, ENGINEERING, Issue № 01(91) January 2020 | 0 comments

The analysis of the mass transfer mechanism during the formation of silicated layers in molten salt media is carried out. The work of micro-voltaic cells and, in particular, the anodic stage of the process, occurring on the surface of powder additives (electrochemical reducing agents), is the theoretical basis of mass transfer and alloying of layers. It is shown that the intensity of the micro-galvanic cells determines the saturating ability of the bath and depends on the difference between the stationary electrode potentials of the metal of the workpiece and powder additives. Some results of studying the kinetics of silicification and heat resistance of the obtained alloyed Zr, Mn, Al and REM layers with a minimum gain at a temperature of 10,0000C are presented.

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APPLICATION OF NEURAL NETWORKS FOR COGNITIVE STRUCTURES MODELING

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The article discusses issues related to solving the problem of constructing and processing cognitive structures based on the use of neural networks. The authors consider the organization of a specialized model that is configured to solve the problem and denoted as a “neural network cognitive model (NNCM).” They describe the main elements of this model, designated as a “neurocognitive element (NCE)” and the rules for its formation. The regulations of cognitive mapping structures to neurocognitive models are considered as well. Both structural descriptions of these models and procedural models of their formation are presented in the paper.

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PROBLEM OF ENSURING AVIATION SECURITY IN TERRORIST THREATS

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

This paper considers the issue of ensuring aviation security in case of terrorist threats. Terroristic acts carried out on air transport have a significant frightening effect on the world community, show the insufficient effectiveness of the security measures taken in the fight against terrorism, which defines the most important goal as reducing the risk of terrorist attacks on air transport. In the framework of the article, the relevance of the problem is substantiated, the existing methods for achieving the given goal and the author’s proposal are presented.

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INFLUENCE OF GENOTYPIC WHEAT GRAIN FACTORS ON STRUCTURAL AND MECHANICAL PROPERTIES OF ITS MILLING PRODUCTS

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The article presents a comparative description of the structural and mechanical properties of wheat grain based on particle size analysis of grain grinding products. The most common indicator of these properties is the hardness index, which was evaluated: by the passage of a certain sieve, as well as by the advanced particle size distribution – fractographic method, which allows using “computer vision” to take into account not only the particle size, but also their shape. A study was made of the influence of the grinding method on the accuracy of assessing grain hardness.

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MAIN DEVICES AND EQUIPMENT FOR AUTOMATED ASSEMBLY – TANK WELDINGS

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The article describes the main stages of assembly – welding of a tank of large length, which has a non-standard shape. The main technological problems of welding in inaccessible places were solved. 3D-models of devices are made, their basic elements are described in the paper. Welding by a robotic complex is considered in detail, and specific welding robots are selected, their geometric parameters are universal and suitable for working with most of the products. The main types of welding of various elements of the power set of the tank are selected.

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TUBULAR CONDUCTORS USAGE FOR REDUCING POWER LOSSES IN POWER LINES

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

This paper explores the possibility of using tubular conductors with solid aluminum as an alternative to classic stranded wires to reduce power and voltage losses during power transmission over power lines. The author carried a preliminary review of the modern types of wires used in overhead power lines, identified their advantages and disadvantages. According to the calculation it was found that the tubular conductors have less active resistance and less linear inductive resistance in a three-phase system, which reduces power losses and increases line throughput. The author considers a possible technical method of their production, and analyses the prospects of improving the mechanical properties of the proposed conductors through the use of a composite core.

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CONTACTLESS PAYMENTS SECURITY RESEARCH

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The article descibes a new technique for ensuring the security of contactless payments. The new method significantly improves the contactless payment security with NFC-enabled smartphones and bank cards with a similar chip. The authors identified relevant threats in the contactless payment system, they conducted analysis of the security of the contactless payment system, and based on the identified security threats, developed recommendations to address them and increase the level of security with the use of contactless payments.

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APPLICATION OF FOSSIL MEAL IN FACADE CERAMICS PRODUCTION, OBTAINED USING GLASS SCRAP

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

This work presents the mixture composition development results, including low-plastic clay as the main component, boric acid as a fluxing agent, glass scrap as a flux-hardening additive and a fossil meal as a component forming a finely porous ceramic structure. The results of the work include the dependences of the bending strength and thermal conductivity of facade ceramics on the ratio of the components of the mixture, confirming the role of each of the additives and allowing to determine their ratio, ensuring the performance of ceramics. The work also contains information on the basic physical and mechanical properties of the developed material, from which it follows that the obtained ceramics is energy efficient, which allows obtaining products with reduced mass and meeting the regulatory requirements for tiles for external cladding of walls and socles.

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AUTOMATION OF FIRST LIFT ON THE EXAMPLE OF WATER SUPPLY SYSTEM IN NOVOORLOVSK VILLAGE OF ZABAYKALSKY KRAI

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

This work presents a brief description of the project on the development of a hardware-software complex for controlling pumping units of the first lift of a water supply system in Novoorlovsk village of Zabaykalsky Krai. The goal of the work is to increase the economic efficiency of the accumulating reservoir water filling process in the first lift. Besides, the complex should provide high reliability of the operation of the first lift by preventing freezing of the pipeline. The paper presents the analysis of the technical and economic efficiency of the proposed solutions.

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ANALYSIS OF CARGO TRANSPORT STATE IN MOSCOW REGION AND PROSPECTS OF ITS MODERNIZATION

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The primary goal of this work is to define the parameters affecting the truck fleet modernization strategy, based on the analysis of the state of freight transport in the Moscow region. The following tasks were identified to achieve this goal: to study statistics on the average age of the truck fleet and types of vehicles used in the Russian Federation, to analyze the interview of the head of the Department of Transport and the Development of Road Transport Infrastructure of Moscow. Based on the information collected, the author draws a conclusion about the possibility of modernizing vehicles, its timing and development prospects.

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MICROCLIMATE OF CULTIVATION STRUCTURES (GREENHOUSES) UNDER CONDITIONS OF FAR NORTH

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The paper presents the heat balance calculation of greenhouse plants in the Far North and the analysis of options for heat and ventilation equipment. The greenhouse farm with a total area of 576 m2 manufactured by Agrisovgaz LLC is taken as the design project. According to the results of this work, the construction of part of the greenhouse from the timber, and the rest of the enclosing structures from the double-glazed window was the best option. The analysis of four types of heating systems was conducted as well; the use of water-air heating turned out to be the most appropriate.

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SYSTEM FOR REAL-TIME MOBILE ROBOT CONTROL

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

This work is devoted to the development of a system for real-time mobile robot control. The system allows remote control of a robot, or its autonomous movement to the destination real-time by a user with a detour of obstacles, with simultaneous localization and map building.

Drive control and odometry are implemented on the stm32f7 nucleo board using the ChibiOS real-time operating system, and navigation on the raspberry PI 2B single-board computer is based on ROS packages such as move_base, gmapping and various drivers for interacting with sensors and the microcontroller. Development also includes the implementation of a simulation mode using gazebo_ros packages.

The developed control system was tested in the simulator, and then indoors – the tasks assigned to it were successfully completed.

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HUMAN RESOURCES MANAGEMENT CONSTRUCTION COMPANY

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The article shows the relevance of human resources management in the construction industry. The problems of improving the efficiency of management decisions are analyzed. The content of the management decision through its main functions is revealed. The content of resource management planning through its function is disclosed: the establishment of permanent and temporary relationships between all departments of the construction enterprise, the definition of the order and conditions of their functioning. The principle of operation of the management process at the enterprise as the development of the vertical division of labor, that is, the organization of labor of managers to coordinate the activities of structural units and performers.

The analysis of the structure of the construction organization. The ways of increasing the efficiency of human resources management are shown.

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INFLUENCE OF HARDENER AND MODIFIER TYPE ON ACID PERMEABILITY OF EPOXY COATINGS

Posted in 2019, ENGINEERING, Issue № 12(90) December 2019 | 0 comments

The authors studied and acidophilic sorption kinetics and diffusion profiles of a sulfuric acid solution in anticorrosive materials based on epoxy resin cured by amines or anhydrides. They also evaluated the prospect of using an acidophobic material based on anhydride curing to form the outer layer of the composite coating.

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