bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on modernization directions of the human-machine interface of flight management system for future civil aircrafts
Authors: Neretin E S , Budkov A S , Ivanov A S , Ponomarev K A 
Published: November 2019

Abstract
The article proposed the description of the developed human-machine interface of the flight management system for future civil aircraft. The directions of development, existing solutions and also technical documentation requirements for this type of interface are analyzed. A number of solutions are proposed that implement new ways of presenting information and provide for intuitive and reliable interaction with a crew.
Induction heating simulation of the waveguide assembly elements
Authors: Bocharova O A , Tynchenko V S , Bocharov A N , Oreshenko T G , Murygin A V , Panfilov I A 
Published: November 2019

Abstract
The waveguide path systems consisting mainly of aluminum alloys with improved weight, size, and electrical parameters are used to ensure the functioning of the spacecraft and its onboard equipment in accordance with a given program. When assembling the elements of the waveguide paths, in particular a thin-walled pipe of rectangular cross section, coupling and flange, induction brazing is used. Element-by-element assembly of lightweight waveguide paths using the method of induction soldering is connected with a number of technological difficulties such as the uneven distribution of temperature fields, the thickness variation of the soldered products and the design features of the inductors. This paper presents a model describing the process of heating a pipe-inductor system during induction brazing. The presented model describes the process of induction heating of the pipe as a separate structural element of the waveguide path. In the process of simulation in the Comsol software, on the basis of numerical simulation methods with the connection of the necessary media involved in induction heating, the pipe heating graphs are obtained.
Analysis of axial forces in harmonic drives of mining machines and heavy industrial equipment
Authors: Strelnikov V N , Sukov M G 
Published: November 2019

Abstract
Special features of arising axial forces in heavy-duty harmonic gear drives with the disk wave generator are described. As a result of research performed, it is found that kinematic pairs formed by the wave generator disks and the flexspline serve as a source of axial forces in heavy-duty harmonic gear drives. The disclosure of physics of the effects taking place in the elastic kinematic pairs: disk – flexspline, determination of nature of axial forces acting in the area of the wave generator under load, allows uprating of the performance data, lifting of load-carrying capacity restrictions and providing full development of heavy-duty harmonic gear drives. The force analysis of the results of the experimental research of axial forces in the heavy-duty harmonic gear drives with the disk wave generator, arising in kinematic pairs: disk – flexspline - has been carried out. Axial forces were measured employing the method of strain gauging of the flexsplines of the heavy-duty waveform gear reduction units tested under the laboratory and production-line conditions of heavy engineering, with the adjustable load conditions. Functional connection of axial forces values with the harmonic gear drives design features has been established, depending on the external loads.
Production approaches of a human brain tissue phantom for robot-assisted stereotactic biopsy
Authors: Klimov D D , Buinov M A , Vorotnikov A A , Meleshnikov A M , Poduraev Y V 
Published: November 2019

Abstract
The article presents the production approaches of a human brain tissue phantom for robot-assisted stereotactic biopsy. The different types of materials used for the production of brain phantoms are shown. The experiments on the possibility of obtaining a sample of tissue simulating the brain, using a conventional biopsy needle with a side cutting window, are conducted. It is proved that silicone can not be used for production of a phantom of a brain tumor. The approach to the production of a phantom of two materials is proposed for use in the development of new robotic systems of stereotactic brain biopsy, as well as training surgeons.
Analysis of the possibility of excitation of soliton-like waves in crystals using the ab initio method and molecular dynamic simulation
Authors: Zakharov P V , Lucenko I S , Eremin A M , Starostenkov M D , Vdovin R S 
Published: November 2019

Abstract
In this article, using the first-principle approach and the method of molecular dynamics, the authors investigate the properties of a Pt3Al crystal with a view to the possibility of the existence of such waves of soliton-like waves as discrete breathers. Methodical aspects of crystal models building are presented, with the analysis of the advantages and disadvantages of each method. Such crystal properties as the density distribution of phonon states, dispersion curves, and electron density distribution are studied. Based on the density functional theory, it is shown that the spectrum of the crystal does not have a through band gap, however, along the <100> directions, it is possible to excite high-amplitude long-lived modes on Al atoms. The results indicate the benefit of the concept of discrete breathers in the investigated crystal.
Impact load influence on hardened polymer composite materials with metal elements built in the structure after microwave electromagnetic field treatment
Authors: Zlobina I V , Bekrenev N V 
Published: November 2019

Abstract
During the operation of air and land transport systems, as well as of small-sized vessels, the possibility of influence on their load-bearing structures and dynamic loads shell, including those initiated by a solid body impact, is high. Currently, a significant part of the structural elements of these products is made of fiber-reinforced polymer composite materials (PCM). Impact force is transmitted to the load bearing structures through the PCM product and can lead to the destruction of the connection and damage to the structures themselves. The structure of the PCM includes metal constructions in the form of grids and cellular elements, which creates additional stress concentrators and can affect the perception of shock loads. The studies of the perception of shock load by samples from hardened carbon plastics with a lightning-resistant copper mesh inbuilt in the surface layer and three-layer structures with intermediate cellular elements after their processing in a microwave electromagnetic field were carried out. The obtained results indicate the redesign of the matrix after exposure to a microwave electromagnetic field, and can be used in the development of technologies for final processing of the products made of PCM to increase their resistance to impact force.
Modified tungsten oxide-based filler for radiation protective polyimide composites
Authors: Yastrebinsky R N , Yastrebinskaya A V , Pavlenko Z V , Karnauhov A A 
Published: November 2019

Abstract
The paper presents the results of studies on surface modification of finely dispersed tungsten (IV) dioxide with polyethylsiloxane from a solution of n-hexane with the aim of its compatibility and the possibility of uniform distribution in the volume of the nonpolar polyimide matrix. The energy dispersive interaction of the press powder of polyimide and highly dispersed modified WO2 in a jet-vortex mill allowed for the activation of their surface, as well as high uniformity of distribution of the filler in the polyimide matrix and excluded the possibility of the formation of agglomerates. It is shown that the use of modified WO2 increases the degree of filling of the polymer composite by 15-20% and the increase in the density of the composite by 16.0%.
Analysis of modern methods for determining the dynamic friction of bulk materials
Authors: Erokhina O O , Kovalskaya K V , Ryaboshuk S V 
Published: November 2019

Abstract
The coefficient of dynamic friction is investigated in widespread gravitational flows of granular materials of numerous technological processes. The calculation of dynamic friction is necessary in the study of shear flows, the behavior of the sediment layer on an inclined plane, tracking the sticking motion, damping friction in structural dynamics and sliding resistance. The friction coefficients of particles against each other depends on many factors (a set of physical and mechanical properties of particles, chemical and fractional composition, the presence of a lubricant, oxide films, moisture and other conditions, such as volume, angle and height of falling particles), each of which separately difficult to count. The experimental determinations of the value of the coefficient of internal friction during pressing are the most reliable; however, such methods are not applicable in the course of analyzing mixtures in the mining and metallurgical industries due to the fact that bulk materials of this type are characterized by gross porosity and are prone to breaking during similar experiments. To obtain reliable results of mathematical and computer simulations, there is a need to evaluate the mechanics of flow of granular materials or bulk solids. There is a shortage of ways to predict these patterns, that require understanding and conducting extensive basic research. At present, several models are used to describe the connected state of materials (soils, sands, granules and powders): soil mechanics, hydromechanical (continuum mechanics), continuity hypothesis (phenomenological model). All existing methods are based on the average value of the characteristics of a large number of particles and can not be used to describe models with high fractional void volume, and as a result, do not describe each discrete particle in the composition of the flow of bulk materials. This article provides an overview of existing methods for assessing the dynamic friction of solids, their applicability in various situations, as well as the development trends of this scientific field.
Temperature spread modeling of electron beam heating process
Authors: Oreshenko T G , Bocharova O A , Tynchenko V S , Bocharov A N , Petrenko V E , Kukartsev V V 
Published: November 2019

Abstract
The research and creation of the mathematical model of temperature distribution in the electron beam heating, depending on the technological parameters are considered in this paper. A feature of this mathematical model is used by the process of producing welds of parts from aluminum alloys. Aluminum alloys are of great interest for various industries, such as aerospace, aviation, automotive, oil and gas, chemical industry and others, because the aluminum alloys has low weight. However, when welding aluminum alloys, various defects can occur, such as porosity or hot cracks, which limit it uses. One of the main problems is connected with the welding of aluminum alloys this is a problem of determining the causes of porosity during the design and technological preparation and production of products prototypes from the new alloys, also the recommendations preparation for the welding technology of these products.
Description of vibrational oscillations in the viscous concrete medium by cylindrical punches
Authors: Kirilov I V , Khanin S I , Voronov V P 
Published: November 2019

Abstract
Analytical expressions for describing changes in the amplitude and phase shifts of the velocity of propagation of oscillations in a viscous concrete medium as applied to vibroform with cylindrical punches were obtained. Using graphical dependences, the influence on the parameters of the distance from the surface of the punch to the oscillating particle, the frequency and amplitude of its oscillations were established.
Chromatographic study of the component composition and antioxidant activity of polyphenol complex in biological raw materials
Authors: Averyanova E V , Danilchenko Yu V , Fedorova N V 
Published: November 2019

Abstract
Recently, the attention of many researchers has been attracted by raw materials that contain flavonoids. The purpose of the research is to summarize the results of studies of the composition of flavonoids of a non-fat sea buckthorn meal, which is a secondary raw material for the production of sea buckthorn oil. In this case, the sum of the five identified flavonoid compounds was isolated by extraction and subsequent adsorption column chromatography. At this stage, the actual problem of identifying and determining individual isolated flavonoids was solved using chromatographic (TLC, HPLC) and spectroscopic methods in comparison with reliably known samples. During the study, the flavonoids were identified: isorhamnetin, kaempferol, myritin, quercetin and its glycoside rutin, quercetin and isorhamnetin predominate. Ultimately, the effective parameters of the method for the improvement of the competitiveness of dietary supplements are established.
Magneto-liquid damping method and analysis of generated dissipative characteristics
Authors: Petrovsky E A , Morozova V A , Bashmur K A , Tynchenko V S , Bukhtoyarov V V , Kozhukhov E A 
Published: November 2019

Abstract
The paper presents the problem of damping technological equipment oscillations by electrical systems. A method of reducing the emerging vibrations using dampers with a magnetic fluid is proposed. The variants of the optimal location of the permanent magnets and the interaction of their fields for the effective design of the magneto-liquid damper are considered. The optimal scheme is obtained – “for repulsion”. The analysis of the known statistical data is carried out, and the correlation dependence of the dynamic viscosity on the magnetic field parameters depending on the gap between the permanent magnets is obtained. The values of vibration energy dissipation for the proposed magnetic- liquid damping method are obtained. The universality and adaptability of this method of damping vibrations in the process of reducing the vibrations of the technological equipment have been proved.
Investment in the improvement of maintenance service efficiency of processing equipment of an industrial enterprise
Authors: Konyuhov V Yu , Gorban A V , Gladkih A M 
Published: November 2019

Abstract
The article considers the role of investments in the growth of profitability of large-scale production due to the high wear of processing equipment because of the long absence of major repairs. It evaluates the effectiveness of the organization of maintenance service of the processing equipment operated in the shop of a metallurgical plant. The cost of the services provided by a specialized organization is determined. The paper describes the procedure for the settlement of accounts and the conditions of acceptance of equipment after service in the current production conditions in the Far North. In the final part of the article the financial, organizational and economic results of the activities are presented.
Time characteristics assessment of performance of information processing system using modified GERT-network
Authors: Tsepkova M I , Stupina A A , Korpacheva L N , Fedorova A V , Shmeleva Z N 
Published: November 2019

Abstract
When analyzing the efficiency, performance and manageability of information processing system, there arises the task to assess time characteristics of a system or its nodes, as well as to estimate task execution time in different startup modes under different conditions. Modified GERT-networks are used to solve this problem. The article describes the operation of forward and reverse algorithms for calculating the modified GERT-network, as well as provides their analytical comparison.
Multimethod genetic algorithm for the three-dimensional orthogonal packing problem
Authors: Chekanin V A , Chekanin A V 
Published: November 2019

AbstractThe article is devoted to design and investigation of a set of heuristics intended to optimize the three-dimensional orthogonal packing problem with the multimethod genetic algorithm. The proposed heuristics are based on five rules for selecting objects and seven rules for selecting free spaces of containers. The quality and time effectiveness for all these rules were determined. The probabilities of including these rules into new heuristics are given. The article contains results of computational experiments carried out on the standard instances of the three-dimensional orthogonal bin packing problem.
Calculation of a variable cross-section beam on an elastic foundation with two coefficients of compliance
Authors: Poliakov A M , Shtanko P K , Pakhaliuk V I 
Published: November 2019

Abstract
In this paper, the universal Kurdyumov-Kochanov method with approximation of the solution by a power function is used to calculate a beam of variable cross section located on an elastic foundation, characterized by two coefficients of compliance (bed coefficients). It is shown that this method is characterized by simplicity and efficiency in the study of beams not only with continuous, but also with piecewise-continuous laws of change in the dimensions of sections and external load. In addition, it can also be used to analyze the behavior of beams with discrete laws for changing the stiffness of an elastic base and loads acting on local sections of the beam. The effectiveness of the implementation of the method is confirmed by a number of test cases.
New method of COBRA parameters comparison
Authors: Pavlenko A A , Tynchenko V V , Bukhtoyarov V V , Boyko A A , Tynchenko S V , Stupina A A 
Published: November 2019

Abstract
The comparison between two or more number rows is very difficult and impossible to perform without additional mathematical processing and formulas. A tool is needed to determine whether the efficiency of the algorithm has significantly improved, the changes made, or at a certain level of significance, these changes have not made any special improvements to the operation of the optimization algorithm. The methods of variational series comparison were analyzed. A new method of variational series comparison was developed. The methodology was tested when choosing parameters and for comparing the influence of initialization methods on the global optimization genetic algorithm and the collective optimization method based on the Co-Operation of Biology Related Algorithms (COBRA) based on bionic algorithms. The studies showed that the new method of variational series comparison well fulfilled its functions and coped with its task.
Subject features of engineering activities of the supporting university
Authors: Knyazev N A , Buyankina R G , Zukov R A 
Published: November 2019

Abstract
The subject of the research is a subject basis of the inter-branch and interdisciplinary integration of modern scientific and technological processes in the “supporting university - industry” system. Subject features of engineering were described using the methodology of the post-industrial society and post-non-classical stage of scientific development. Analysis of materials allowed for the conclusion that it is necessary to consider engineering at the theoretical (in developed form - at the epistemological) level rather than using its empirical and information models. The complex interaction of disciplinary, general scientific and socio-ideological components in the relationship between the university and its interdisciplinary environment belongs to one of the most important features of the subject basis of engineering in the supporting university.
Modeling the dynamics of the distribution of company orders at their cost
Authors: Pervadchuk V P , Vladimirova D B , Derevyankina P O 
Published: November 2019

Abstract
Sales volume is one of the most important characteristic of business efficiency. In a detailed analysis and planning of sales it is necessary to consider not only lumped, but also distributed indicators. For this purpose, it is proposed to use developed mathematical model of distribution of orders at their cost. The model constructed by stochastic dynamics methods and described by the initial-boundary value problem for a one-dimensional partial differential equation of parabolic type. The paper presents the model rationale and also numerical example made in Comsol Multiphysics.
Development of GPS-based Tracking System to Evaluate the Effectiveness of Tillage using Four-wheel Tractor
Authors: Nugroho A P , Shalih S M , Purwantana B , Sutiarso L , Radi  , Markumningsih S , Masithoh R E , Yun J H , Kim K U , Yeo I C , Lee D G 
Published: November 2019

Abstract
The objective of this study was to present the development of GPS-based tracking system to evaluate the effectiveness of tillage using a four-wheel tractor. The system is composed of a location acquisition, using GPS (iGPSport), and data analysis for estimating the tractor trajectories and effectiveness of tillage by measuring the overlap during the tillage. The laboratory stage experiment was conducted to validate the system by measuring the specified size of the field and tractor trajectories. The performance evaluation of the system was done by measuring the displacement error of actual trajectories and the estimated one. The system was also tested for the actual tillage operation using a four-wheel tractor, Daedong Kioti RX7210, in two locations in Yogyakarta: Pajangan, and Moyudan. The tractor tracking system was developed based on GPS for estimating the tractor trajectory path and operation width distance (l) after the operation as tillage effectiveness evaluation by the evaluation of overlap and untillage land systematically using the tracking system. The system performance evaluation in the actual field for tillage operation using the four-wheel tractor in Moyudan and Pajangan shows that the RMSE < 50 cm, and the MAPE < 24% with R2 > 0.7. Overall performance of the tracking system, it could be used to estimate the behavior of tillage operation.
Appropriate adaptation of precision agriculture technology in open field cultivation in tropics
Authors: Nugroho A P , Sutiarso L , Okayasu T 
Published: November 2019

Abstract
Tropical agriculture production is profoundly affected by the uncontrollable environmental condition. To obtain good agricultural products, farmers manage their farm to fit with the variation of weather and season. The farming managements are generally determined according to farmers personal knowledge, gained from the long-term experience from preceding years. Nowadays, climate change intensifies unpredictable weather and its unstable distribution. Consequently, conventional farming management considering the climate change factor should be considered. The farming management should face the dynamic change of weather condition as well as improve the farmer’s knowledge towards the implementation of precision agriculture approach. The objective of this study was to introduce an appropriate adaptation of precision agriculture technology by the utilization of information and communication technology (ICT) to improve conventional farming management in tropical agriculture production. The framework is implementing cloud technology as a backbone, which can be extended with various knowledge such as data science, plant biology, plant physiology, biophysical, and biomechanical. The appropriate adaptation of precision agriculture represented by the improvement of the conventional farming method using the technological aspect by fostering their knowledge to adopt modern agriculture empowered with Information and Communication Technology (ICT). Learning process from data-information-knowledge on the application of precision agriculture will be documented at the PA Knowledge Management System.