Архив журнала "Техника и технологии: теория и практика"

Issue №1 2020:

Russian version  /  English version



DOI: 10.34286/2712-7419-2020-1-1-7-19
УДК 512.62+004.021


Kazakh University of Economics, Finance and International Trade, Kazakhstan, Nur-Sultan


Abstract. In modern cryptography, various hash functions are widely used. The main problem with using hash functions is that the existence of irreversible functions that exclude the possibility of collisions has not been proven. In addition, there are no universal hashing methods, and they should be selected depending on their area of application. A special role is played by complexity-theoretical problems, namely, algebraic number theory. One of these problems is the search for irreducible polynomials of a given degree over a finite field, which can be used to search for message hash codes. Irreducible polynomials have found their application in various fields of mathematics, information technology and information security. Using the properties of irreducible polynomials allows you to maximize the effective computer implementation of arithmetic in finite fields, which is of particular importance for cryptography and coding theory. This article describes a method for constructing hash functions based on irreducible polynomials over finite fields. In addition, the problem of searching for irreducible polynomials is considered. Computer modeling of hash functions using irreducible polynomials over finite fields has been performed. The results of using various irreducible polynomials and their analysis are presented. The results of the article can be used in cryptographic applications and coding theory.

Keywords: irreducible polynomial, Hash function, finite field, redundant cyclic code, collision.


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DOI: 10.34286/2712-7419-2020-1-1-20-28
УДК 631.37+629.35

ANATOLY N. SKOROHODOV, Advanced Doctor in Engineering Sciences, Professor
NIKOLAJ A. MAJSTRENKO, Ph. D. of Engineering Sciences

Russian Timiryazev State Agrarian University, Russian Federation, Moscow


Abstract. The article is devoted to a system approach to modelling combined crops, justifying the parameters and operating mode and operating the performance of the production processes.

Keywords: modelling, optimization, parameters, technological complexes, production processes.


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DOI: 10.34286/ 2712-7419-2020-1-1-29-40
УДК 621.892

NIKOLAJ N. PULYAEV, Ph. D. of Engineering Sciences, Associate Professor

Russian Timiryazev State Agrarian University, Russian Federation, Moscow


Abstract. In the modern world, environmental problems are particularly relevant. Air and water pollution and soil pollution are causing increasing damage to humanity and all life on the planet. The development of motorization, tractor and engine building makes a huge contribution to the processes of environmental destruction. But each equipment has its own service life, and the issues of its disposal are particularly acute for us. More than half a million units of agricultural machinery are involved in agriculture in our country alone, which requires lubricants to function. In turn, there are more and more spent oil products. The article deals with the problems of restoring the quality indicators of lubricants, which are of direct importance in the framework of ecology and resource conservation. The proposed measures will not only reduce environmental pollution, but also save our country's energy resources. The paper presents the classification of spent petroleum products, methods and means of their collection, as well as methods of their storage. Methods for improving the quality of motor oils, such as cleaning from mechanical impurities, chemical cleaning, dispersion of contaminants, and others, are considered. The study concluded that the repeated use of motor oils will have a positive impact on the activities of agricultural organizations and the country's economy as a whole.

Keywords: petroleum products, recycling, ecology, resource conservation, lubricants, restoration of the quality of processed oils, oil regeneration.


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2. Pulyaev N. N., Korotkih Yu. S., Privalenko A. N. Obespechenie ekonomii toplivno-energeticheskih resursov i kachestva toplivno-smazochnyh materialov [Ensuring the economy of fuel and energy resources and the quality of fuel and lubricants]. M. : OOO ″Avtograf″, 2018. 120 p.
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7. Kovalenko V. P., Pulyaev N. N. Nefteproduktoobespechenie v APK [Oil products supply in the agro-industrial complex]. M. : OOO ″UMC ″Triada″, 2013. 100 p.
8. Pulyaev N. N., Vinogradov O. V., Karelina A. S., Korotkih Yu. S. Nauchnye osnovy nefteproduktoobespecheniya v sel'skom hozyajstve [Scientific bases of oil product supply in agriculture]. M. : OOO ″Avtograf″, 2017. 120 p.
9. Privalenko A. N., Nametkin O. P., Bordyugovskaya L. N., Pulyaev N. N. Osnovnye problemy obespecheniya sohraneniya i kontrolya kachestva goryuche-smazochnyh materialov na predpriyatiyah nefteproduktoobespecheniya [Main problems of ensuring the preservation and quality control of fuel and lubricants at the enterprises of oil products supply] // Mezhdunarodnyj nauchnyj zhurnal. 2011. № 4. pp. 83-88.
10. Urazgaleev T. K., Pulyaev N. N., Korotkih Yu. S., Privalenko A. N. Osnovy resursosberezheniya pri ekspluatacii polevyh neftebaz i nefteskladov [Fundamentals of resource saving in the operation of field tank farms and oil storage facilities]. M. : OOO ″UMC ″Triada″, 2015. 174 p.

DOI: 10.34286/ 2712-7419-2020-1-1-41-60
УДК 621.436

ALEKSEY M. KAREV, Ph. D. of Engineering Sciences, Associate Professor
ARTEM S. GUZALOV, Postgraduate
ROMAN P. SUMKIN, Master’s Degree

Russian Timiryazev State Agrarian University, Russian Federation, Moscow


Abstract. The evolution in the development of diesel engines is considered, in particular, the last decades of the development of diesels at an accelerated pace are traced. The main efforts of specialists in the direction of development and production of light and compact, powerful and economical engines that meet modern environmental standards are analyzed. Questions about the tightening of environmental standards and their impact on the re-evaluation of established approaches in the design of engines, as well as systems and supercharging units are highlighted. All over the world, these changes are taking place very dynamically, and the approaches that have been established for many years are being destroyed by the transition from Euro-3 to Euro-4 environmental standards, and the new environmental requirements of Euro-5 And Euro-6 have accelerated research on the creation and improvement of multi-stage supercharging systems. Two-stage supercharging systems have a more complex design with multiple versions and a large number of controlled parameters during development than single-stage systems. The analysis and comparison of the potential capabilities of various schemes was carried out when creating twostage supercharging systems. One of the solutions to this problem is a hybrid supercharging unit. It is assumed that hybrid supercharging units will be able to compensate to a certain extent for the disadvantages of conventional TCR.

Keywords: supercharging, turbocharger (TCR), exhaust gases (OG), engine speed, automobile transport, electric turbocharger, engine boost, effective pressure, exhaust gas smoke, torque, specific air flow, two-stage supercharging.


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DOI: 10.34286/ 2712-7419-2020-1-1-61-77
УДК 656.11

O. A. DURNICYN, Master’s Degree
A. V. MANYASHIN, Ph. D. of Engineering Sciences, Associate Professor

Industrial University of Tyumen, Russian Federation, Tumen


Abstract. Purpose of research: The intellectual transport system (ITS) should be able to predict the movement’s speed for the short periods of time in the future on the branches between a lot of nodes of the transport system almost in a real time using as less as possible observed and stored speed values. These predictions maintain timely response of the ITS to the changing traffic conditions caused by deceleration volumes or accidents and include recommendations for changing the route and time estimation to the destination. Solution method: motion sensors are installed into the inter-regional highway system and in the metropolitan area. The sensor kit that is used in this project is placed along the highway e22 eastward from the intersection with the regional highway 354. The sensor data including speed, volume and sensor fill percentage were coming with an interval of 1 minute to the Tyumen company Intellectual Transport System. A hierarchically linear regression was used to develop a velocity prediction. A model that requires only the current and one previous speed value to predict the speed up to 30 minutes in the future. The model was tested by comparing the collected data with the average relative error and the median error as the main indicators. Conclusions and results: the model was a better speed’s prediction than the one minute average values. It was found that the relative error between the observed and predicted values ranges from 5.9 % for1 minute, for the future predictions to 10.9 % for 30 minutes for the future predictions for the 2019 data base. The corresponding median errors ranged from 4.0 to 5.4 %. Thus, the prediction ability of the model was considered sufficient for its application. Implementation: the model has not been installed into ITS, so the final verification of its efficiency has not been completed. The social effect: delays in travel due to the traffic accidents caused by traffic jams or other reasons, annoy passengers and are also expensive in terms of fuel consumption and unnecessary emissions, among others. One of the purposes of the ITS is improving the social impact of transport by reducing these negative consequences. The prediction of the traffic speed is one of the factors that allows the ITS reach such purposes. Research value: to develop the models of traffic flows numerous intensive and very complex approaches were used, requiring large amounts of data. As such these models are not designed or well suited to be installed into the ITS for the almost real time calculations. Such an application requires a model that can quickly predict the speed of traffic movements for the numerous branches of the transport network using only several data points captured and saved in real time for the each branch. The designed and approved in this study model meets all these requirements.

Keywords: prediction of the traffic’s speed, intellectual transport systems, hierarchical regression.


1. Manyashin A. V. Prognozirovanie i planirovanie resursov na avtomobil'nom transporte s ispol'zovaniem informacionnyh tekhnologij [Forecasting and resource planning in automobile transport using information technologies]. Tyumen' : TyumGNGU, 2015. p. 146.
2. Manyashin S. A. Metodika issledovaniya rezhimov dvizheniya avtomobilej v gorodskih usloviyah [Method of research of modes of movement of cars in urban conditions] // Problemy ekspluatacii i obsluzhivaniya transportnotekhnologicheskih mashin: Sbornik materialov mezhdunarodnoj nauchnotekhnicheskoj konferencii. Tyumen' : TyumGNGU, 2008. pp. 126-128.
3. Manyashin S. A., Manyashin A. V. Avtomatizaciya issledovanij rezhimov dvizheniya avtomobilej v gorode [Automatization of research of automobile traffic modes in the city] // Problemy ekspluatacii sistem transporta: Sbornik materialov vserossijskoj nauchno-prakticheskoj konferencii, posvyashchennoj 45-letiyu so dnya osnovaniya Tyumenskogo industrial'nogo instituta imeni Leninskogo komsomola / Otvetstvennyj redaktor V. I. Bauer, 2008. pp. 197-198.

DOI: 10.34286/ 2712-7419-2020-1-1-78-87
УДК 656.025.4

OLEG P. ANDREEV, Ph. D. of Engineering Sciences, Associate Professor

Russian Timiryazev State Agrarian University, Russian Federation, Moscow


Abstract. Sometimes, when searching for solutions to optimize road transport routes, market participants go to extremes that are best avoided. For a modern business, many processes need to be adjusted, from selecting suppliers to delivering products to customers. At the same time, one of the key and financially costly areas is transport logistics. Its functions extend from the transportation of raw materials to the enterprise to the transportation of finished products to end customers. A well-designed cargo transportation system allows you to significantly reduce the cost of maintaining the fleet, as well as reduce the risk of delays and damage to the goods. This is why we need to regularly optimize the road transport system, thereby reducing costs without losing the quality of transportation. The article considers the process of organizing and managing road transport. It also describes the features of road transport, problems and some solutions to optimize cargo transportation. The algorithm of technology in the field of optimization of small-batch transportation is presented. The main goal of optimizing transport support for enterprises is to create optimal routes for road transport to improve the quality of transportation and reduce the cost of transporting goods.

Keywords: route optimization, road connections, quality improvement, mileage, transportation organization schemes, optimization, products.


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