bluuebunny/crossref_metadata_2025_split huggingface dataset:
The dual control algorithm of nonlinear dynamic processes in the conditions of incomplete a priori information
Authors: Medvedev A V , Raskina A V 
Published: August 2020

Abstract
The problem of controlling nonlinear dynamic systems under conditions of incomplete a priori information about the model of the differential equation of the process is considered. Nonparametric models are given in which the order of the difference equation of the dynamic process is refined based on the rule for distinguishing significant variables. According to this rule, only those variables are included in the nonparametric model for which the minimum bandwidth is minimal. Nonparametric algorithms of dual control of nonlinear objects are given. Control devices built on the basis of these algorithms perform not only the direct function of controlling the object, but also its study. The process of training the dual control system with active accumulation of information is analyzed. The results of a numerical study of the application of the nonparametric adaptive dual control algorithm are presented.
Improvement of the regulation system for the electric drive of rolls rotation in the rolling mill
Authors: Kuznetsov V A , Kuznetsova E S , Kharenko V N , Zaitsev N C 
Published: August 2020

Abstract
An improved dual-zone speed control system for the electric rotation of the rolls of a metallurgical plant using a dynamic current sensor has been developed. For example, the rolling engine of the mill “900” of the beam workshop was used. The use of an improved system will increase the productivity of the rolling mill.
Models and mechanisms for planning service improvements
Authors: Zymin A V , Zolin I A , Burkova I V , Zimin V V 
Published: August 2020

Abstract
Models and mechanisms for project portfolio management, constantly generated by the IT service provider and designed to optimize IT processes of IT service life cycle stages are the subject of this article. The service improvement plan is formed from the project portfolio and is aimed at achieving critical indicators of IT services market success relevant for the current period. Two linear and one nonlinear models of the problem of forming a service improvement plan were considered. The criteria chosen for task optimization are absolute and relative value of the complex IT process efficiency indicator. Problems take into account the investment costs on implementing projects and changing the operational costs on functioning of optimized IT processes. All the problems were solved with the use of network programming methods.
Infrastructure management of software systems of modern “IT” in the automation of production processes
Authors: Nedzelskay O N , Moiseyev V V , Bikineeva A N , Bulakina E N 
Published: August 2020

Abstract
The article examines the methodology, describing the concept of information infrastructure management companies focused on their need, a comparison of models of information systems. The authors investigate the possibility of their joint use for maximum effect from the introduction of software systems. Process management of IT infrastructure of the enterprise has a number of advantages. Thus, in determining the types of activities, inputs, outputs, standards and requirements, an increase in the efficiency, the rationality of work can be achieved and quality management tools can be achieved. There are different methodologies for describing the achievement of business goals instruments with a high level of reliability of the information system. The most common was the British Library IT Infrastructure Library.
Toward industry 4.0 in energy sector
Authors: Goosen Elena , Nikitenko Sergey , Kagan Elena , Pakhomova Evgeniya 
Published: August 2020

Abstract
The article attempts to identify the profound changes occurring in the global and Russian energy sectors under the conditions of Industry 4.0. The features of the implementation of the global innovative Industry 4.0 project in the global energy sector are studied; a change in the technological basis, an upgrade of value chains and a change in business models are shown. The state and prospects of the Russian fuel and energy complex transition to a new Industry 4.0 development paradigm are analyzed. The main models and barriers to the formation of new value chains in the Russian fuel and energy complex are identified. The main niche in the Russian energy complex is highlighted, in which its development on the principles of the Industry 4.0 paradigm is possible and most likely.
The influence of technological and labor processes on the efficiency of the rolling complex
Authors: Kadykov V N , Musatova A I 
Published: August 2020

Abstract
Studies on the organization of technological and labor processes in the existing rolling complex (long product rolling mill) were carried out. Using normative clock models of equipment operation in the areas of the complex, a “bottleneck” was identified that constrains the work of the human-technical system, which is the packaging section for finished products, where baling is performed by workers manually. In order to eliminate the “bottleneck”, it is proposed to modernize the baling area by introducing units for mechanizing and automating the processing of finished products, to eliminate manual labor, improve the formation of current information. The possibility of improving technical and economic indicators (reducing the number of workers, increasing production, labor productivity, etc.) is shown.
Deformation, heat treatment and properties of piston hypereutectic silumins
Authors: Afanasyev V K , Prudnikov A N , Prudnikov V A , Popova M V , Fastykovskii A R 
Published: August 2020

Abstract
A series of piston hypereutectic silumins based on Al – (15 ÷ 20) % Si alloyed with copper, magnesium, nickel, and chromium was studied. The alloys were modified with phosphorus and hydrogen-containing reagents to increase the deformability and mechanical properties. The experimental ingots, cast in the steel mold, had dimensions: diameter 190 mm, height 500-550 mm, weight 32-40 kg. The mechanical properties and temperature coefficient of linear expansion (TCLE) of the experimental ingots and forgings made from them are determined. Temporary tensile strength and relative elongation of deformed ingots from hypereutectic silumins were 227-306 MPa and 5.7-7.5%, respectively. The optimal heat treatment of deformed silumins was determined: quenching with step heating and aging, which allows the strength of forgings to be increased up to 370-470 MPa. Moreover, the ductility indicators remain at a high level, and the average TCLE of the alloys is (18.0 ÷ 19.2) ·10−6 К−1 in the range of 50 ÷ 200 °C.
The working conditions analysis of the electrodes of plasma torch EDP-104A in nitrogen plasma
Authors: Galevskiy G V , Rudneva V V , Orshanskaya E G , Galevskiy S G , Mishne I 
Published: August 2020

Abstract
The analysis of the electrode conditions and performance of plasma torches EDP-104A in nitrogen plasma is carried out. It is shown that the life of the plasma torch is determined by the erosion of the tungsten thermal cathode. It is confirmed that the erosion depends on the strength of the current and the oxygen content in the plasma-forming gas. At the current strength of 1 kA with an increase in oxygen content from 0.1 to 0.5%, erosion increases from 10-12 to 10-9 kg/C. To reduce cathode erosion, it is necessary to limit the oxygen content in technical nitrogen.
Application of ladle electric steelmaking slag as a flux – additive for welding
Authors: Mikhno A R , Kozyrev N A , Kryukov R E , Usoltsev A A , Umansky A A 
Published: August 2020

Abstract
The possibility of using ladle electric steelmaking slag as a flux – additive in the welding flux based on slag from silicomanganese production is considered. The effect of this flux – additive on the properties of the deposited metal is shown. The optimal composition of welding flux with the flux – additive providing a favorable appearance and properties of the weld metal was revealed.
Technological basis of the plasma-metallurgical production of zirconium carbide
Authors: Alekseeva T I , Galevskiy G V , Rudneva V V , Galevskiy S G 
Published: August 2020

Abstract
Based on the interpretation of the results of theoretical and experimental studies, a continuous technological process for zirconium carbide production in the plasma-metallurgical reactor, including plasma generation, plasma processing of zirconium-carbon-containing raw materials, the formation of ZrC, forced cooling and its separation from the process gases flow leaving the reactor, was developed.
Environmental monitoring of the reclaimed sites of JSC “EVRAZ ZSMK”sludge dump
Authors: Vodoleev A S , Androkhanov V A , Zaharova M A , Andreeva O S , Domnin K I 
Published: August 2020

Abstract
For conservation of technologically disturbed lands, various methods of reclamation are used to prevent their negative impact on the environment. At the same time, technological methods are used, including changing the technology of waste storage, changing the state of storaged products using briquetting and granulation, creating mechanical barriers that prevent the spread of dust or continuous coating with non-dusting material, and the physicochemical method – creation of a protective layer using foam or hydro-dusting in order to stabilize a dusty surface. The most environmentally effective is the biological method – creation of a protective vegetation cover. This method is of particular relevance due to the phytotoxicity of the technogenic substrate for sludge dumps and the difficulties of creating a stable vegetation cover. Taking into account the industrial and environmental characteristics of the waste in sludge dumps of JSC “EVRAZ ZSMK”, an assessment of the physiological state was carried out as part of environmental monitoring and the chemical composition of plants growing in the reclaimed areas of this technogenic object was analyzed. A comprehensive assessment of the environmental safety of the use of sewage sludge from urban wastewater treatment plants on the substrate of the sludge storage facility as the main soil improver is given.
Diversification of the production and processing of pulverized wastes and ores based on the SER jet-emulsion unit
Authors: Tsymbal V P , Rybushkin A A , Rybenko I A , Kozhemyachenko V I , Kalashnikov S N , Ermakova L A 
Published: August 2020

Abstract
The principles of creating a self-organizing jet-emulsion reactor (SER) are considered, the role of dissipative structures in solving problems of controlling the metal chemical composition is shown. The technological scheme of the unit is presented, in which it is possible to process pulverized materials with a wide range of changes in chemical composition, including sludge, scale, poor pulverized ores and tailings.
Analysis of the main trends in the development of the production of grinding balls in Russia and abroad
Authors: Umansky A A , Golovatenko A V , Prudnikov A N 
Published: August 2020

Abstract
The article presents the results of the analytical review of the main trends in the grinding balls production in Russia and foreign countries. It is shown that grinding balls of domestic production have lower performance characteristics in relation to foreign counterparts, which is due to the technological features of their production, including the use of unalloyed steels with high hardenability and rejected billets of steels for other purposes (in most cases, rail steels), non-optimal technology of heat treatment. Based on the analysis, a list of promising areas for the development of domestic production of grinding balls that contribute to the competitiveness of this type of product in the domestic and foreign sales markets is determined. These areas include: increase in the share of rolled balls from alloy steels and cast balls from alloy cast irons, improvement of the technology of balls heat treatment and usage of new specialized steel grades for their production.
Features of structure formation and thermal expansion of high alloys of the Al–Si–Cu system
Authors: Afanasyev V K , Popova M V , Malyukh M A , Prudnikov A N 
Published: August 2020

Abstract
The study results of the copper alloying effect on the microstructure and thermal coefficient of linear expansion (TCLE) of high aluminum alloys for special purposes based on the Al – (20÷30)% Si system are presented. It was found that alloy building of Al – 20% Si with copper in large quantities eliminates the linear expansion anomaly characteristic to the binary alloy and leads to a significant decrease in the thermal expansion coefficient over the entire temperature range of the tests. It was shown that Al–30%Si–20÷40% Cu alloys have stable TCLE in the low-temperature test interval. Metallographic analysis of high alloys showed that copper introduced in amounts of more than 20% contributes to a change in the morphology of the silicon phase and triple eutectic.
Modeling of the chromium compounds synthesis in the nanocrystalline state
Authors: Shiryaeva L S , Galevskiy G V 
Published: August 2020

Abstract
In this work, the technology of nanocrystalline chromium compounds by carbidization of chromium-containing raw materials with hydrocarbons in a plasma flow generated in a three-jet direct-flow reactor was selected as the object of study. The computer program was developed that implements a comprehensive multifactor model of the plasma synthesis process and allows multivariate engineering and research calculations of the effective carbidization parameters of chromium-containing raw materials.
Correct accounting of risks in assessing the effectiveness of investment projects of metallurgical companies
Authors: Galevskiy S G 
Published: August 2020

Abstract
This article proposes the methodology that modifies the capital asset pricing model (CAPM). The proposed methodology allows for separate accounting of risks of the first and second kind and, accordingly, to correctly reflect them in the calculations using the discounted cash flow method. This makes it possible to adequately assess the effectiveness of investment projects and make informed management decisions.
Expert system of diagnostics blast furnace process
Authors: Spirin N A , Gurin I A , Istomin A S 
Published: August 2020

Abstract
The expert system of diagnostics blast furnace process is presented. It is based on a logical-mathematical model for assessing the progress of blast furnace smelting. The model provides an opportunity to evaluate the normal operation mode of blast furnace and further deviations from this mode such as overdeveloped gas flows (peripheral and central), violation of thermal melting conditions (hot and cold course of melt), violation of smooth descent of burned materials in the furnace (tight furnace operation, higher and lower suspension of burden). The functional capabilities of developed software are represented.
Experience of ceramic production from silicon carbide with the addition of SiC nanopowder
Authors: Nepochatov Yu , Bogayev A , Khasanov O , Dvilis E , Kuchumova I , Khabirov R 
Published: August 2020

Abstract
The effect of silicon carbide nanopowder additives on the properties of armor ceramics from this compound has been investigated, and the results are presented. The study reveals that the powder introduction in an amount from 5 to 10 wt. % leads to an increase in hardness and crack resistance when density is maintained. It enabled us to obtain the material which can be used in structural and armored ceramics.
Improvement of the working surface resistance of a stamping tool with coating and SSS modeling of the preliminary mechanical activation of the surface layer of the stamp working parts
Authors: Tabakov V P , Kokorin V N , Morozov O I , Ilyushkin M V , Titov Y A , Kornyakov E L 
Published: August 2020

Abstract
A research technique was developed. The selection of the processed samples (sizes, material, operating conditions) was carried out. The physical and computational model of the process of cold plastic deformation of samples from tool heat-resistant steel X12M was developed. The technique for studying the effect of cold plastic deformation on the adhesive ability of a substrate – coating system is presented.
Structure and microhardness of bioinert coatings of Ti-Ta-N system
Authors: Romanov D A , Sosnin K V , Pronin S Yu , Moskovskii S V , Gromov V E , Semin A P , Protopopov E V 
Published: August 2020

Abstract
The coatings of Ti-Ta-N system have been obtained for the first time. Production of bioinert coatings of Ti-Ta-N system was realized by means of promising technique of electroexplosion spraying and subsequent electron-ion-plasma modification with nitrogen ions. Titanium of VT6 grade was used as a substrate for spraying of coatings. Electroexplosion spraying with use of tantalum foil leads to formation of tantalum coating on titanium substrate. Subsequent electron-ion-plasma modification with nitrogen ions results in synthesis of the following phases: TiN, Ta and β-Ti. Average microhardness values of the coatings formed vary from 449 kgf/mm2 (E = 11.47 %) to 530 kgf/mm2 (E = 10.02 %). Electroexplosion processing promotes the increase in titanium substrate microhardness near coating – substrate interface. In volume of titanium substrate the microhardness decreases to values corresponding to reference data. Irradiation of electroexplosive tantalum coating by electron beam with subsequent nitriding leads to homogenization of structure. Optimum mode of irradiation should be considered the one at powder density of electron beam of 0.5 MW/cm2. At lower value of power density the electron beam melts the electroexplosion coating to insufficient depth. At higher values of power density the electron beam leads to boiling of the melted coating and formation of larger quantities of pores. These phenomena are caused by thermal and physical characteristics of titanium substrate.
Structure and properties of differentially hardened 100-m rails after long-term operation
Authors: Kormyshev V E , Polevoy E V , Golovatenko A V , Gromov V E , Ivanov Yu F , Semin A P 
Published: August 2020

Abstract
Using methods of modern materials science the analysis of structural phase states of defect substructure and mechanical properties of tread surface at different distance (from 0 to 22 mm) along central axis and fillet of differentially hardened 100 meter rails of DT 350 category manufactured at JSC “Evraz-Integrated West-Siberian” metallurgical combine after long term operation (passed tonnage 1411 mln. t. brutto) at experimental test ring has been performed. Microstructure of rails’ metal is presented by fine-dispersed lamellar pearlite (grain confidence index 2) with inclusions of excess ferrite along grain boundaries estimated by 2 numbers of scale No. 7 of State Standard 8233. The value of interplate distance in rail head varies within 0.10-0.15 μm. Long term operation of rails is accompanied by the formation of gradient structure being expressed in regular change in hardness, microhardness, impact strength, destruction degree of cementite plates, scalar dislocation density throughout cross-section of rails head. The failure mechanisms of lamellar pearlite structure have been discussed. It has been shown that microhardness at 2 mm depth from tread surface amounts to 1481-1486 MPa. At depth up to 10 mm the microhardness values decrease up to 1210-1385 MPa that is caused by increase in interplate distance and decrease in level of cold strain hardening of metal in long-term operation of rails.
Features of the structure formation in the process of obtaining cast aluminum matrix nanocomposites using ultrasonic melt treatment
Authors: Prusov E S , Deev V B , Panfilov A A , Temlyantsev M V 
Published: August 2020

Abstract
The paper presents modern representations about the effect of ultrasonic treatment on the behavior of nanoscale reinforcing particles in aluminum melts. Advantages and potential directions of application of the ultrasonic melt processing method for producing cast aluminum matrix nanocomposites are presented.
Humanization of the urban environment for children (on example of the residential yards in city of Vladivostok)
Authors: Maslovskaia Oksana , Kopeva Alla , Srikauskas Lilia , Ivanova Olga , Khrapko Olga 
Published: August 2020

Abstract
This study is due to the need to develop principles for the humanization of the living environment in the housing of the city of Vladivostok, contributing to the socialization of children in a contemporary city and to reduce the anthropogenic impact of the urban environment on them. The following research methods were used in the work: systematization of theoretical and practical sources - Russian and foreign scientific publications and real examples of children’s playgrounds; observation and behavioral mapping, photo-fixation, description of functional and aesthetic characteristics; analysis of requirements of normative and technical documentation and requirements for taking into account climate and terrain conditions, experimental design method. The results of the study were: criteria for evaluating the playgrounds for determining the degree of children socialization in the urban environment and the level of comfort of the residential yards; the principles for the humanization of outdoors spaces for children as a means of achieving a comfortable and educational environment for children in the conditions of the city of Vladivostok. The pilot project showed the effectiveness of the basic principles of the humanization of the urban environment for children proposed by the authors.
Supergraphics as a project and artistic method in design of a modern city
Authors: Mikhailov Sergey , Khafizov Rafik , Mikhailova Aleksandrina , Nadyrshine Neil , Nadyrshine Lilia 
Published: August 2020

Abstract
Supergraphics in the city design is considered as a special form of artistic synthesis of graphic design and architecture in the process of organizing the built environment of the city at various levels (urban ensemble, architectural object, subject forms).
The main stages in the formation and development of a supergraphic approach in the city design are revealed: atectonic color-graphic compositions in the architectural environment (until the middle of the 20th century), architectural supergraphics (the second half of the 20th century), anamorphic three-dimensional images in the pedestrian zones of cities (21th century.), Autonomous dynamic color and light composition in the architecture and subject-spatial environment of the city (modern time).
Current trends in the field of artistic synthesis and the foundations of the formation of a supergraphic approach in the design of a city based on the philosophy of traditional architectural supergraphics and the use of the latest technologies of the information society are outlined.
Multilinear approach to representing the historical evolution of urban design (industrial and post-industrial periods)
Authors: Mikhailov Sergey , Mikhailova Alexandrina , Nadyrshine Neil 
Published: August 2020

Abstract
The concept of “city design” is revealed as a special type of design and art synthesis of architecture, monumental and decorative art, urban planning and landscape design at the level of individual forms, urban spaces and ensembles, as well as the city as a whole.
Using a multilinear approach to presenting the history of design, the authors of this article pay special attention to factors affecting the form-finding in design that actively influence it both at the designing stage and also allow us to consider the evolution of design objects in interrelation with political, economic and cultural events in the world.
The main stages of the historical development of the design of the city of the industrial and post-industrial periods are considered on the basis of a multilinear approach in the presentation of the historical process, which meets the new concepts and ideals of the post-industrial society with a holistic picture of the worldview. They show the complexity and multidimensionality of the task of representing the history of city design and the need for special studies of this relatively new phenomenon in the general design and art culture of the XX-XXI centuries.