bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reduction of defects in the process of formation of precision surfaces of titanium alloy products
Authors: Maksarov V V , Makhov V E 
Published: November 2020

Abstract
The article proposes a new method of reducing defects in the process of formation of precision surfaces of titanium alloy products, which are significantly influenced by self-oscillation in the process of processing. The technique of controlling the amplitude of self-oscillations in the optical image of blanks with a digital camera of the light field and vibration parameters from the Doppler radar is presented. Studies have shown that the vibration signal from the surface of the product obtained by Doppler locator gives more complete information about the defects of the treated surface, information related to the process of formation of precision surfaces and the causes of self-oscillations. Optical method of control of self-oscillations on the basis of registration of a light field expands a range and accuracy of control of self-oscillations in 10 times. The configuration of the measuring scheme with parametric illuminator allows reducing defects in the process of formation of precision surfaces of products from titanium alloys. Studies have shown the possibilities of using vibration control to control the technological process to reduce defects in the process of forming the precision surfaces of titanium alloy products.
Efficiency of implementation of interval traffic regulation by the "virtual coupling” system on the section of the railway line in the framework of the "digital railway” project
Authors: Olentsevich V A , Konyukhov V Yu , Olentsevich A A , Lysenko D A 
Published: November 2020

Abstract
In order to remain competitive in the world market, to maximize the needs for transportation with increasing volumes of work, to ensure the availability and quality of services provided on railway transport in the field of organizing the transportation process, it is necessary to use modern digital approaches. The article provides an assessment of the existing technology for organizing the driving of connected trains using the example of the operation of the Mariinsk - Krasnoyarsk-Vostochny section of the Krasnoyarsk railway. With the development of technology for driving connected trains, it has become possible to connect trains by means of a virtual coupling, which does not imply physical coupling of trains using an automatic coupling device, while the trains are in a constant, equidistant, position from each other. To analyze the efficiency of organizing the driving of double trains in the "Virtual Coupling" mode, the authors of the article built train schedules with an interval for double trains of four minutes, and in the future with an interval of two minutes. The calculation of the main indicators of the train schedule and the line capacity has been made. The calculation revealed that with the introduction of the technology of interval regulation according to the "Virtual Coupling" system, the required throughput of the railway line increases by 19.05% relative to the existing traffic schedule with the use of double trains. The use of trains with "Virtual Coupling" on the Mariinsk - Krasnoyarsk-Vostochny section is preferable, since their use reduces losses in the traction network, power consumption and other parameters of the traction network, and the voltage at the locomotive current collectors is significantly higher than when using connected trains. The economic effect from the use of this technology for organizing the work of the Mariinsk-Krasnoyarsk Vostochny section will amount to 894.14 thousand rubles per year.
Industrial cyber-machines remote control method
Authors: Shukalov A V , Zharinov I O , Zharinov O O 
Published: November 2020

Abstract
The cyber-environment configuration is being transformed significantly today. The new approach advantage is to use cyber-machines (CM) united into the industrial net segments for multi-disciplinary product production. A set of CM is several times more efficient than a classical horizontal machine pool. The CM target orientation, which function in the self-regulating mode is provided with the master-system by remote control channels. There is a scheme proposed how to control the CM remotely to support the wide spreading technologies of address high level and low-level data exchange. The wide-spreading technology controls the CM group simultaneously. The address technology uses one time access to each CM. The high-level technology programs CM functional capabilities. The low-level technology controls the CM physical elements. The master-system allows for the provision production chains adaptive control and has some intellectual potential of the industrial development. An effective CM inter-operation interaction surely justifies the investment attractiveness of the material production sphere.
Automatic control system of damping winch to compensate influence of heave of parent vessel and to stabilize immersion depth of towed underwater vehicle
Authors: Chupina K V , Kachanov D A 
Published: November 2020

Abstract
The paper is devoted to a problem of synthesis of the automatic control system of a damping winch. The vessel descent-rise devices are used for vessel heave compensation and immerging depth stabilization of a towed underwater vehicle. Most of them have essential disadvantages. First, a cable destructs during its bending strains on descent-rise device’s blocks. Second, a power of such device increases due to the compensation function. To eliminate these disadvantages it is offered to use a special damping winch. It is on the underwater vehicle. There are two controllers in the suggested automatic control system. The rope’s tension controller is used for a heave compensation function of the damping winch and the rope’s length controller is used for immerging depth stabilization of a towed underwater vehicle. For optimization of controllers the standard coefficients method with binomial decomposition and an optimal module method were used. Due to the offered approach vertical displacements of the underwater vehicle are reduced ten times at any sea state codes and stepless depth changing for a towed underwater vehicle is provided.
The methodology of training an underwater robot control system for operator actions
Authors: Kramar VA , Alchakov V V 
Published: November 2020

Abstract
The article discusses the approach to building an underwater robot control system based on the “Programming by Demonstration” approach. The basic elements of the implementation of the approach are considered. The participants in the learning process are indicated. Input variables are defined, and a training model is selected. As a result, a training methodology for the underwater robot control system is formulated for the system to perform specified manipulations.
Asynchronous motor drive operability field with two-link structure of frequency converter
Authors: Zhukovskiy Y L , Korolev N. , Filatova I. 
Published: November 2020

AbstractThe article presents an approach to determining the electric drive’s operability based on an asynchronous motor with a short-circuited rotor and a two-link frequency converter. Mathematical description of the frequency-controlled electric drive is performed, in particular, selection of criteria taking into account an electric and mechanical part. The harmonic current distortion coefficient as a component of the power coefficient is used for the determination of the energy criterion. The mechanical criterion is the coefficient of the electromagnetic moment pulsation, on the value of which the conjugated equipment depends. The operability field is represented as a function of three variables: (a) rotor speed, (b) current harmonic distortion coefficient, and (c) electromagnetic moment pulsation coefficient. The obtained surface makes it possible to determine the actual state of the electric drive and to estimate the reserve of operability, which allows reducing the operating costs in terms of repair and maintenance.
Investigation of the characteristics of an electric arc plasma torch with an output step electrode
Authors: Anshakov A S , Aliferov A I , Domarov P V 
Published: November 2020

Abstract
The generalized formulas are obtained in the criteria form for calculating the energy parameters and the discharge chamber of the plasmatron. The calculation results and experimental data for the thermal efficiency and current-voltage characteristics of an electric arc plasma torch with an output step electrode are presented.
Comparative analysis of sensors for climate check
Authors: Astakhov N V , Bashkirov A V , Glotov V V , Kostyukov A S , Tsipina N V , Glotova T S 
Published: November 2020

Abstract
Registration and monitoring of climatic conditions is an essential task in many manufacturing processes. These parameters are essential for storing certain types of materials or equipment and also play a significant role in the operation of the device. In this regard, the problem of using specialized recording devices becomes relevant. This paper considers such instruments for recording and monitoring climatic characteristics as testo 608-H1; testo 635; testo 645; TPM 201. Their technical characteristics and measurement ranges have been presented. Also the conclusions about the conditions under which it is better to use a particular device have been drawn. The study found that testo 608-H1 and testo 635 have limited functionality and are mainly used in accommodation units or small warehouses. The testo 645 and TPM 201 devices have more extensive functionality and are used in enterprises in test facilities, production lines, climate chambers, dryers, foundry furnaces, galvanic shops.
Criteria for similarity of the processes taking place in vacuum plasma torches with hollow cathodes
Authors: Cherednichenko A V , Cherednichenko VS , Domarov P V 
Published: November 2020

Abstract
The article demonstrates that using the vacuum because of its properties as a medium of zero conductivity has enabled to create the construction of hollow cathode plasma torch. An analysis of thermophysical processes inside the cathode channel was carried out. Conditions were determined for the generation of high enthalpy plasma in the cathode channel and the gas-dynamic output of the plasma into the discharge column in the axial direction. A model of the development of the processes of energy input into the cathode channel is considered. General patterns of the working modes are demonstrated, and criteria of similarity for hollow cathode discharges are formulated based on the Knudsen number, the Reynolds criterion and the interconnected electromagnetic parameters.
Mathematical modelling of physical processes in a synchronous generator with permanent magnets for output voltage stabilization circuits
Authors: Kaluzhsky D L , Biryukov V V , Mekhtiyev A D 
Published: November 2020

Abstract
When some consumers are powered from independent sources of electric energy, there is needed stabilization of output voltage on the generator in a wide range of load current changes. The use of traditional stabilization methods in the power supply systems with electric machines does not always provide the required level of the supply voltage. The use of synchronous magnetoelectric generators in voltage stabilization circuits is of particular interest in this regard. For determining the possibility of their use, the operating conditions of electric machines were analyzed, the main factors affecting their external characteristics when varying the load level were identified. The studies were based on the mathematical model that ultimately made it possible to obtain dependences convenient for use in engineer.
Modeling an energy storage device for electric vehicles
Authors: Malozyomov B V , Stepanenko O G , Daudov I M 
Published: November 2020

Abstract
The article discusses the most promising areas for improving energy efficiency in urban electric transport. The object of research is the rolling stock of urban passenger road transport. The subject of the study is to establish the dependence of the energy-efficiency of selecting the type of energy storage, energy consumption and power storage devices, a location of energy storage.
Digital platform as a means of process optimization of integrating electric vehicles into electric power networks
Authors: Zhukovskiy Y L , Suslikov P K , Arapova E G , Alieva L Z 
Published: November 2020

AbstractIn this paper, we consider the need to create an algorithmized digital platform for the development of electric charging networks of road transport and to optimize the load on the current power grid complex. In modern conditions, this platform can become an example of a mechanism for public-private partnerships and the development of environmentally friendly transport. The purpose of the platform is to provide users with up-to-date information about the state of the electric vehicle battery, reduce the cost of creating a network charging infrastructure for electric vehicle transport, automated resource accounting for power supply companies, and other services. The use of information technologies to combine the processes of economic relations in the field of energy sales services will attract funds for infrastructure development by increasing the load factor of generating capacities and unloading power centers. In the article, the authors propose a digital platform architecture using modern technologies such as IIoT, Vehicle to Grid (V2G), Machine learning, Big Data.
NBIC-technology and strategic management tools in the organization of business and production
Authors: Akberov K Ch , Sukhodaeva T S , Malozyomov B V , Shuraev I A 
Published: November 2020

Abstract
The paper is devoted to the analysis of the development of industrial production organizations, using focal points for the development and implementation of a production management strategy. It also solves the problems associated with the development of mathematical and algorithmic support for adaptive decision support systems in situational centres, taking into account expert options for institutional conditions in information systems for operational monitoring, situation analysis and assessment of production situations.
Forming a taxi service order price using neural networks with multi-parameter training
Authors: Andriyanov N A 
Published: November 2020

Abstract
The article discusses the use of neural networks to forecast the prices of orders in the taxi service. The analysis shows that the results of the price control action are preferable to the results that are obtained for the direct cost of the trip. Special attention is paid to such factors as the time of the order, the weather condition of the environment, the number of cars in the area, as well as the distance between the starting and ending points of the route. It was shown that networks ensure maximum accuracy with backward propagation of error with the number of neurons (5) close to the number of parameters (4).
Storage and analysis of natural resources information in various territories
Authors: Mikhalev A S , Tynchenko V S , Kukartsev V V , Korpacheva L N , Kukartsev V A , Rozhkova A V 
Published: November 2020

Abstract
The article is devoted to the creation of a system of cartographic models of natural resources for a specific territory. The reasons for the inefficient use of natural resource information in modern Russia are described. The place of natural resource mapping in the formation of a natural resource information space is characterized. The task of systematic consideration of natural resources when creating cartographic support for solving the problems of natural resource management and environmental management planning has been set. It is proposed to develop a program for processing images in the GeoTIFF format, intended for the analysis of natural resources. The structure of the program for the planning and management of environmental management is presented. The main functional types of CMRD are outlined: inventory, estimated, forecasted, recommended. The features of their use at various stages of environmental management are identified.
Software and algorithmic decision support tools for real estate selection and quality assessment
Authors: Zelenskiy I S , Parygin D S , Ather D , Soplyakov I N , Antyufeev A Yu , Prigarin E A 
Published: November 2020

Abstract
This paper describes the development of an algorithm for comprehensive assessment the quality level of real estate objects based on multicriteria estimation. Existing approaches to assessment and two main groups of parameters are noted. The module of pre-processing and structuring of records about real estate objects based on text processing is presented. In addition the task to indicate suspicious real estate ads is considered and an algorithm of the solution based on image processing is presented. Conclusions are made about the problems and prospects of applying the proposed approach to the assessment the quality of real estate objects.
The effect of sucrose concentrations and shoot inoculum density on the growth of in vitro shoot of teak (Tectona grandis L.)
Authors: Witjaksono  , Riastiwi I , Nugraheni K U , Windarsih G 
Published: November 2020

Abstract
The teak belongs to the highly prized timber tree. Quality teak trees have been guaranteed by planting clonal planting materials propagated vegetatively, for example, by shoot tip cutting and tissue culture. Tissue culture propagation of teak has been commercially viable even though the efficiency of production can still be improved. This research aimed to study the effect of increasing shoot inoculum density and sucrose concentration requirement for optimum growth of teak shoot in vitro. Inocula of a single nodal shoot in the number of 5 or 9 were inoculated on modified MS basal media with sucrose concentrations treatment of 20, 30, 40, 50, and 60 g l−1. The results showed that the standard sucrose concentration of 30 g l−1 and a higher concentration of 40 g l−1were optimum for the growth the inocula of the densities tested. Even though the average shoot growth was lower for nine inocula than that of five inocula, the total shoot growth was higher for the former. An increasing number of inocula can be used as a method to increase the efficiency of shoot proliferation stage of teak micropropagation.
Evaluation of the potency of endophytic fungi associated with Artemisia annua as antibacterial and antioxidant
Authors: Evana  , Praptiwi  , Fathoni A , Ilyas M , Maehara S , Gusta A 
Published: November 2020

Abstract

Artemisia annua has been known as a traditional herbal medicine. The purpose of this study was to evaluate the potential of eight endophytic fungi associated with A. annua as antibacterial and antioxidant. Preliminary screening for antibacterial and antioxidant activities was carried out by the TLC-bioautographic method, and the active extracts were further analyzed for their MIC and IC50 values by serial microdilution method at 96 microwell plates. The results showed that eight endophytic fungi were able to inhibit the growth of Staphylococcus aureus with MIC values ranging from 64 to > 256 μg/ml. In the meantime, five endophytic fungi inhibited the growth of Eschericia coli with MIC values of 256 μg/ml. One isolate, which has a very strong antibacterial activity against S. aureus (MIC = 64 μg/ml), was TdAaCb-2. Four endophytic fungi extracts were active as an antioxidant by acting as DPPH free radical scavengers. The results of this study indicated that the endophytic fungi extracts associated with A. annua were promising natural sources for antibacterial and antioxidant.
Probiotic powder production for cattle by using response surface methodology
Authors: Rohmatussolihat  , Ridwan R , Sari N F , Fidriyanto R , Astuti W D , Widyastuti Y 
Published: November 2020

Abstract
At present, the use of antibiotics and growth hormones for livestock has been prohibited by the regulations. Probiotics are one of the additives that are safe and permitted by regulations, and also can replace the use of antibiotics. Probiotics are live microorganisms used in livestock to improve microbial balance and have positive effects on host animals. The purpose of this study was to optimize the production of probiotic powder media by using Central Composite Design-Response Surface Methodology (CCD-RSM). The RSM-CCd was prepared using four variables, namely starch, CaCO3, Corn Gluten Meal (CGM), and zeolite, with five-level combinations. The drying process of probiotic powder used a vacuum oven at 45°C for 24 hours. The vacuum process was carried out using a vacuum pump for three hours. L. plantarum TSD-10 survival amount was measured by the total plate calculation method. Statistical analysis showed that the viability of probiotics was significantly affected by CaCO3, CGM, and zeolite. According to the model developed, the amount of optimum L. plantarum TSD-10 surviving was estimated can reach around 100.01%, with the content of starch, CaCO3, CGM, zeolite are 30%, 45%, 30%, 60% respectively.
In situ wood fossil from Gorontalo, Indonesia
Authors: Andianto  , Dewi L M , Damayanti R , Krisdianto  , Oktariani H 
Published: November 2020

Abstract
Gorontalo, one of the provinces in Indonesia, has not been widely known for its potential of wood fossil. The anatomical structures observation and the age estimation were conducted on two specimens of wood fossils buried in Tohupo Village, Bongomeme District, Gorontalo. The anatomical features of wood fossils were observed through thin slices of the cross, radial, and tangential sections using a Carl Zeiss-Axio Imager-A1m microscope. The description of anatomical features referred to the IAWA (International Association of Wood Anatomists) list of microscopic features for hardwood identification. The age estimation of the wood fossils was based on Geological Map (scale 1: 100.000) of the Tilamuta sheet, Sulawesi. Based on anatomical structures observation, the species of wood fossils were identified as Hopenium sp. (merawan/hopea) and Shoreoxylon sp. (balau). The estimated age of wood fossils was 3.6 to 1.8 million years before the present (BP) (between the late Pliocene and Early Plistocene periods).
Exploration of wood species at Enggano Island: Identification and fiber morphology measurements
Authors: Dwianto W , Damayanti R , Rulliaty S , Lestari E , Bahanawan A , Adi D S , Darmawan T , Wihermanto  , Sugiyama J 
Published: November 2020

Abstract
The objectives of this exploration were to identify and characterize the lesser-known wood species in Enggano island, and to find the suitability especially for construction and sawn-timbers. Wood samples were taken by drilling the trees to obtain a pencil-like shape with a size of 20 cm in length and 0.5 cm in diameter. Identification and anatomical structure observation of wood samples were carried out according to the International Association of Wood Anatomist (IAWA). Preparation of maceration for wood fiber dimension measurement followed the modified Franklin method. Physical properties of wood were investigated to obtain the specific gravity data. Absolute bending and compression strength, as well as the strength class were estimated through the specific gravity values based on Indonesian Forestry Classification. As many as 22 wood species have been collected, where nine of which were categorized as lesser-known wood species. Wood species at Enggano island which have potential as construction timbers with strength class II were Ki Ahid (Intsia palembanica) and Kasai (Kingiodendron alternifolium); and that for sawn-timbers with strength class III were Kabaruk (Antiaris sp.) and Ki Ono (Combretocarpus rotundatus). From the fiber morphological measurements, it was indicated that the smaller the lumen diameter and the longer the fiber, the specific gravity of wood increased.