bluuebunny/crossref_metadata_2025_split huggingface dataset:
Corrosion chemical mechanism in aggressive liquid of MAO coatings based on OT-4 titanium alloys
Authors: Mironova V A , Chizhevskaya M V , Girn A V , Ravodina D V , Mikheev A E , Khodenkova E V 
Published: September 2020

Abstract
Microarc oxidation of alloys is widely used to obtain multifunctional coatings with unique properties. One of the topical issues in the application of the microarc oxidation is to increase the corrosion resistance of titanium alloys. In this article, the corrosion resistance of various microarc oxidation coatings of a titanium alloy in chemically aggressive liquids is determined. Comparative analysis of microarc oxidation coatings chemical resistance of the titanium alloy OT-4 showed a high coating resistance to the corrosive liquid exposure. The highest corrosion coefficient was determined when the alloy was exposed to concentrated sulphuric and hydrochloric acids. Virtually no corrosion of microarc oxidation coatings was observed in dilute acids (H2SO4 and HCl) and NaOH alkali solution.
Technological aspects of the use of fire-prevention roller shutters in places of permanent residence and temporary stay of people
Authors: Yakovlev V A , Semenova A N 
Published: September 2020

Abstract
This article provides brief statistics on victims of fires in the Russian Federation in preschool educational institutions, medical and medical organizations. It provides a general description of fire-prevention roller shutters, the need for their use in buildings and structures, in accordance with technical regulations, functional fire hazard F1 and F4. The general information and materials used for the manufacture of roller shutters are indicated, the probable places of their installation are suggested - on the internal inter-office and interior windows and doors, on the doors at the entrance and exit from the building, as well as at the gates at the entrance to the garages built into the building. A probabilistic method of using fire-prevention roller shutters on the basis of a preschool educational institution as a result of which hypothetically predicts a decrease in the number of victims during a fire is presented.
Prospective helicopter crash-resistance fuel systems testing
Authors: Grachev S V , Smagin D I , Savelev R S , Napreenko K S 
Published: September 2020

Abstract
This article discusses the main requirements for testing helicopter fuel systems in accordance with the regulatory documentation. The analysis of existing solutions for testing aircraft fuel systems both in Russia and abroad was carried out. The concept of a test complex designed for testing fuel systems of helicopters is presented, which includes rotary platforms designed to simulate different angular positions of test objects, technological equipment, and a set of mathematical modeling tools. This test facility allows for joint full-scale and digital tests of the fuel system at all stages of the helicopter’s life cycle.
Automatic control of structural parts main parameters during mechanical testing of aircraft
Authors: Simonov V L , Yu Eliseeva D , Mnatsakanyan O L , Karyagina T V 
Published: September 2020

Abstract
In the aviation industry over the past few years, much work has been done to improve the conditions for the design, manufacture of aircraft, as well as their operation. New models of Russian aircraft are not inferior, and sometimes surpass foreign analogues in a number of parameters. At the same time, flight safety requirements are growing. The introduction of digital innovation is dictated by the growing requirements for technological innovation in the aviation industry. The world is on the verge of a new, fourth industrial revolution, Industry 4.0, whose large-scale penetration will lead to the complete automation of most production processes. Domestic production of various types of aircrafts for civilian and military purposes should reach a new level of technological development in order to protect its role in global economic competition. In this regard, the volume of research, design and development, installation and commissioning, testing and service-maintenance work is significantly increasing. It is possible to achieve an increase in the quality of flight performance and the level of flight safety of an aircraft by creating an automatic system for monitoring the main parameters of structural parts during mechanical tests of aircraft. This article is devoted to the study of automation of control of parameters of structural parts during mechanical tests of aircraft, the process of development and testing of an automated complex for vibration testing of parameters of structural parts of aircraft is considered.
Etermination of factors affecting the stability of cutting edge of thin lamellate knives
Authors: Barakaev N R , Urinov N F , Saidova M Kh , Sohibov I A 
Published: September 2020

Abstract
The article covers technological reliability of thin lamellate knives in terms of accuracy in size and shape of cut blank, identifies the main reasons for the deviation of the cutting edge from the cutting plane, the block diagram of lateral deviation of lamellate knife and experimental setup are developed.
Determination of the energy efficiency of drying hawthorn fruit in a drum dryer with a paddle mixing device
Authors: Shcherbakov S Yu , Babushkin V A , Krivolapov I P , Lazin P S , Korotkov A A 
Published: September 2020

Abstract
A drum dryer with a paddle mixing device which can significantly increase productivity and improve the quality of the drying process has been developed. The recommended values of the following parameters, which provide the most energy-saving mode while maintaining the high quality of the finished product (air supply speed is 2.5 m/s; drum filling factor is 0.25; the stirrer rotation speed is 20 rpm, the drying temperature is 60°C) have been established. These parameter values correspond to the specific power consumption equal to 1.83 kW* h/kg of evaporated moisture.
Results of research on determining the coefficient of rolling resistance of the wheel by the rollback method
Authors: Novikov K V 
Published: September 2020

AbstractThe simultaneous rolling process of two identical wheels in the driving and braking modes is simulated, taking into account the rollback process. The processes of interaction of the driving and braking wheels of the same size with each other and with the mobile platform (road) separating them are studied. The circular diagrams of the wheel rotation angle of a tractor of the traction class 1.4 obtained with the help of a radial recorder are presented in the driving mode when trying to start from a place under a traction load and in the driven mode when stopping after rolling on different support surfaces. As a result of field experiments, it was found that at low values of the relative rise (descent), the transition of the wheel from rolling to rest is not only accompanied by a rollback to the angleαr, but also by damping fluctuations relative to the position of the future rest.
Model and calculation development of productivity of cotton harvesters
Authors: Rizaev A A , Yuldashev A T , Kuldoshev D A 
Published: September 2020

Abstract
This article provides a calculation of the performance of cotton harvesters. The previously proposed models of cotton-harvesting machines are described, as well as new developed models are offered. Based on a numerical study, a comparative analysis of MX-1.8 vertically spindle cotton harvesters and Keys 2022 horizontally spindle cotton harvesters is provided. The influence of the parameters of the cotton harvesters on their productivity is determined.
Status and prospects of technical equipment of small enterprises in agricultural production
Authors: Dzuganov B B , Shekikhachev Y A , Teshev A Sh , Chechenov M M , Mishkhozhev V H 
Published: September 2020

Abstract
This article is devoted to the state of production of crop products and the problems of technical support of peasant (farmer) households and individual entrepreneurs of the Kabardino-Balkarian Republic. Based on the results of the All-Russian Agricultural Census of 2006 and 2016, using a comparative research method, an analysis of such indicators as: dynamics of cultivated areas, volumes and structure of production; the yield of the main types of agricultural crops in general for the agro-industrial complex of the region and categories of farms; the state and assessment of the development of technical equipment of peasant (farmer) households and individual entrepreneurs (the availability of agricultural machinery and the state of the machine and tractor fleet, the actual equipment supply). The place of this category of agricultural producers in the agricultural production of the region has been determined. It is proved that technical equipment has a significant impact on the efficiency of agricultural production of peasant (farmer) households and individual entrepreneurs. The study made it possible to identify the factors influencing the efficiency of agricultural production, to formulate conclusions and proposals for the formation on this basis of effective mechanized structures with the required production and economic parameters. The research results can be used in the implementation of the concept of creating a multi-level system of production and technological support of mechanized processes in crop production, optimization of the distribution of work between the performers: agricultural producers and structures of production and technological services.
Cyberphisical adaptive manufacturing control systems
Authors: Chertovskoy V D , Tsehanovsky V V 
Published: September 2020

Abstract
Cyberphysical systems of adaptive manufacturing control are considered. It has been shown that the concept of Cyberphysical systems can be used for both the construction and analysis of adaptive systems. A generalized technology of research is proposed. A generalized model has been formed both for manufacturing in general and for structured manufacturing with a universal structure. All possible perturbations in the system and their compensating controls are considered. It is noted that the prior art publications use simpler system structures. It has been shown that the proposed model can be used in the study of newly studied systems with different structures, including those not previously discussed. Initially, we consider the technology of building a model that allows you to ensure the optimal mode and the prompt transition to the production of new products. Emphasis is placed on obtaining numerical data. A specific technology for using the model for control purposes is then proposed.
Universal MHD device for automation of casting control of aluminum
Authors: Kinev E S , Tyapin A A , Golovenko E A , Avdulov A A , Efimov S N 
Published: September 2020

Abstract
The article proposes an MHD device designed to automate the management of casting aluminum melt from a stationary mixer. The product is made on a modular basis, similar to an induction detachable unit, has three magnetic cores with windings. The design of the MHD device, the location of the magnetic cores, and the features of connecting the windings to the network turn it into a universal unit. The location of the casting trough inside the closed cores allows the device to be used as an MHD pump for aluminum melt. Methods of connecting the windings make it possible to realize the function of dosing the melt using automated process control systems. Pumping the melt through the chute when placing the module between two sockets ensures stirring of the melt in the mixer. The use of a group of single-phase transformers in three-phase switching ensures the movement of aluminum in the channel by creating traction forces in the melt. The presence of windings, allowing for opposition, puts the electromagnetic module into transformer-inductor mode, improving energy efficiency in traction modes, providing melt heating beyond the furnace and maintaining aluminum temperature.
Study of profilograph features for determining the geometric characteristics of products by laser scanning
Authors: Vasilyev S A , Fedorova A A , Vasiliev M A 
Published: September 2020

Abstract
The work is devoted to study of profilograph features for determining geometric characteristics of products by laser scanning. The control methods applied are implemented in science-based designs of technical means of control that can provide high accuracy of parameter measurement when profiling the surface of parts. The analysis of graphs of the metal sheet surface in full and Cartesian coordinates made it possible to determine the highest and lowest points of the surface, therefore to determine the profile of sheet undulation. For example, the height of metal sheet irregularities resulted from some deformations was 6,378 mm.
Russian projects in tractor engineering intended for increasing the efficiency of agricultural production
Authors: Marinchenko T E 
Published: September 2020

Abstract
Technical and technological upgrading of agricultural production is a necessary factor in maintaining the competitiveness of an agricultural producer. According to experts, the lag in technological development as compared to the level of developed countries is a generation in production process, and from two to three generations in machinery for most agricultural producers. To ensure a decent position of the Russian Federation on the global food market, it is necessary to close this gap in the shortest possible time. Therefore, the timely introduction of the latest scientific and technical projects in production is currently an unconditional basis for its further development. Technical and technological upgrading has a direct impact on the efficiency of agricultural production and the sustainability of agriculture in general. The experience of these agricultural producers who have upgraded their own production shows that agriculture is becoming a high-tech and highly efficient industry. The upgrading of agricultural machinery is a continuous process of introducing innovations into individual components and systems that increase the power, functionality and efficiency of the machinery as a whole. The article analyzes a number of projects of domestic machine builders that are competitive with respect to foreign models.
Influence of the natural gas composition and flue gas recirculation in a reverberatory furnace for nickel alloys
Authors: Quiroz Cabascango V E , Bazhin V Yu 
Published: September 2020

Abstract
A reverberatory furnace for nickel refining is an open flame furnace that comes from a burner, which uses natural gas as fuel; and which working temperatures vary from 1450°C to 1550°C. In reverberatory furnaces there is a waste of heat generated by the burners. If we in time use an adequate recirculation of the combustion gases from the flame we could increase the fraction of heat transferred to the molten metal, in our case, nickel alloys. In this work, we developed a CDF modeling for this type of furnaces to optimize the dynamics of the exhaust gases, to contribute to a more efficient smelting process, focusing on the fact that the efficiency depends on the composition of natural gas. In our study we used 3 different compositions of natural gas, focusing on the percentages of methane with 95.89% Russian natural gas, with 89.67% Spanish and with 89% Bolivian natural gas. This modeling allows us to work with fluid dynamics, combustion and heat transfer, using the Finite Volume Method. Radiation is a very important process to take into account and is adapted to calculate heat transfer. The modeling has been using the ANSYS CFD 19R3 program. The results show the influence of the composition of natural gas on heat transfer in reverberatory furnaces fed with natural gas.
Selecting the shape of centroids of round and non-round gears
Authors: Kurasov Dmitry 
Published: September 2020

Abstract
In the design of gears, the most important task is to obtain centroids. Features of selection of centroids of round and non-round gears obtained by means of functions of harmonious form are considered, process of its formation is shown. Analytical dependencies are presented describing the geometry of the centroid of a round and non-round gearwheel. An example of an implementation of a mechanism based on dependencies describing the construction of a centroid is given.
Stabilization of the axisymmetric parts dimensions and shapes
Authors: Bobrowskii A V , Drachev O I , Ugarova L A 
Published: September 2020

Abstract
This article reviews the method of increasing the stability of geometrics of non-rigid parts of the “shaft” type. The authors give the grounds for the necessity of treatment by the complex vibro-impact method. The authors also present the unit functional diagram, complete with the automatic control system for the implementation of the proposed method. The unit consists of a self-centering steady rest with a non-flow electrohydraulic drive; a vibro-impact drive with a waveguide converter, a workpiece temperature control device. The control system provides the workpiece axis stabilization and temperature control in the process of axial complex vibro-impacts. The article proves the expediency of using the complex vibro-impact method.
Monitoring of parameters of functional and cost analysis of personnel processes of the enterprise quality management system
Authors: Fedonin O N , Simkin A Z , Mozhaeva T P , Proskurin A S 
Published: September 2020

Abstract
The paper considers the fundamentals of personnel processes in the quality management system (QMS) of an enterprise based on the methodology of functional cost analysis (FCA). The expediency of integrating and applying FCA technology into personnel processes of the enterprise’s QMS is justified. The tools (their potential and limitations) are analyzed that allow to identify “areas of imbalance”, i.e. the excess of costs for functions over their significance in the structure of the process as a whole. A way to identify the range of FCA indicators that show othe need for corrective actions is proposed. The arguments are given which prove the advisability to use the proposed monitoring of FCA parameters in relation to the personnel processes of the enterprise’s QMS.
Sharing model of industrial factories
Authors: Shukalov A V , Zharinov I O , Zharinov O O 
Published: September 2020

Abstract
Perspective approaches how to organize a production led to creation of new economic-industrial models (EIM) to describe business processes of companies interaction. The sharing model is actual to be implemented under knowledge economy conditions, which is an approach to manufacture an item by renting for money principles. When a small innovation company pays for a cyber-physical production (CPP) resources renting. Company resources renting may significantly reduce project companies expenses and provide some customization (orientation for a consumer) of the item being manufactured properties. There is an EIM to describe business processes for a big factory, within which some factory makes an apparent projection of a customized item and rents factory CPP resources to produce an item. It is clear that the sharing EIM key component is an online cloud solution, which supports electronic contract servicing within the system of the digital companies electronic commerce.
Assessment of the competitiveness of agricultural production enterprises
Authors: Toshboyev A J , Mardiyev N M. , Ziyadullayev I N , Azimov R B , Zakimov A M 
Published: September 2020

Abstract
The clash of interests of producers of products, works and services in the struggle for profit is a natural process in a competitive environment. Competition as a fundamental characteristic of the market economy has a significant impact on the economic activity of the enterprise, forcing it to strive for superiority over its competitors. In modern economic conditions in Uzbekistan, competition is increasing. As a result, business leaders are constantly searching for new tools for managing enterprises, organizations, factors and levers to increase their competitiveness. The most correct choice of the company’s assortment policy serves as a kind of guarantee that profitable opportunities will not be missed. In this regard, the problem of effective management of the product assortment of manufacturing enterprises is always relevant. The article considers a list of issues that affect the essence and importance of assortment management in a production enterprise, suggests measures to improve the management of the product assortment and assesses their effectiveness. The purpose of this article is to develop measures to improve the management of the product assortment on the example of an agricultural enterprise. The object of research is JSC “Aggregate plant”. The main activity of the plant is the production of agricultural machinery, components and parts for agricultural machinery and oil pumps.
Gradient method for determining non-informative features on the basis of a homogeneous criterion with a positive degree
Authors: Samijonov A , Mamatov N , Niyozmatova N A , Yuldoshev Yu , Asraev M 
Published: September 2020

Abstract
The choice of informative features is one of the main tasks in the problem of pattern recognition and the effectiveness of its solution in many respects depends on the criterion of information content used. Some methods for choosing informative features are implemented by eliminating non-informative features from the feature space. A single criterion has not been developed to select a set of non-informative features. Therefore, the criterion is selected from the formulation of a practical problem. Currently, several methods have been developed for selecting features that are focused on the use of a specific information content criterion. To date, more than 50 homogeneous criteria with zero order have been developed, but in many practical tasks the task of choosing non-informative features requires the use of homogeneous criteria with a positive degree. The paper proposes a gradient method and an algorithm for determining non-informative features based on a homogeneous criterion with a positive degree.
Satellite radio channels simulation methodology
Authors: Samoylov A G , Nasir S A X 
Published: September 2020

Abstract
The main contribution of this paper is to develop the modeling of satellite radio channels. The approach based on the results of propagation of radio channels with different antenna elevation angles. Also, is to obtain the mathematical model of a multipath radio cannel in several frequency bands. Creation a novel mathematical model of multipath radio channels will contribute the global simulator of satellite radio channel. With a software reset of a control signals, this package will allow the researcher to simulate the propagation of a radio signal for different environmental and geographical conditions of critical communication systems.
Method for selecting informative and non-informative features
Authors: Niyozmatova N A , Mamatov N , Samijonov A , Rahmonov E , Juraev Sh 
Published: September 2020

Abstract
Today, solving the problems of choosing informative and non-informative features is an urgent problem, since the areas of application of methods and algorithms for pattern recognition to solve modern applied problems are expanding. But when solving these problems, problems arise that interfere with the effective use of well-known methods for choosing informative and non-informative features. The choice of a combination of a method and a criterion is one of these problems that is most suitable for the task, that is, with the search for such a pair of methods and criteria in which computational costs and recognition error are minimized. This article proposes a new method for choosing informative and non-informative features.