bluuebunny/crossref_metadata_2025 huggingface dataset:
Mathematical modelling of traveling salesman problem (TSP) by implementing simulated annealing and genetic algorithms
Authors: Puspita F M , Meitrilova A , Yahdin S
Published: May 2020

The Traveling Salesman Problem (TSP) is very well known as one of the optimization problems of circuit of Hamiltonian , which will seek for the shortest route that must be passed by a number of city salesmen exactly once and will return to the initial city. Genetic Algorithm (GA) and Simulated Annealing (SA) are one method that can be used in TSP case. Fertilizer distribution at PT. Sahabat Mewah dan Makmur (SMM) in Belitung which is one of the branches of PT. Austindo Nusantara Jaya Group does not yet have an optimal fertilizer distribution schedule, where when fertilizer will be distributed from the starting point of distribution to the location of storage warehouses, it is not determined which location points will receive delivery, shipments are made to warehouse locations that still have enough storage space or stacked in the nearest warehouse. PT.SMM distributes fertilizer from Port of Tanjung Pandan to warehouses in Jangkang, Balok, Ladang Jaya, Sari Bunga, and Aik Ruak. The results show that in the GA of 120 routes, there are 8 routes with a distance of 175 km; In SA, the shortest distance is equal to GA, which is 175 km.
Analysis of student’s proof construction on exponents
Authors: Nurfadilah F , Hapizah  , Scristia
Published: May 2020

This research is a descriptive research that aims to describe the construction of student’s proof on exponents. Proof construction is compiling proof from a statement based on the definitions and rules used. The subject of research were students of class X IPA from SMAN 10 Palembang which consisted of 38 students. The learning process takes place according to the steps of direct learning. The technique of collecting data that used on this research was written test consisting of three problem descriptions. The collected data were analyzed by evaluating the proof of the student work consisting of three assessment categories as follows: Arguments are valid and are proof (K1), general arguments are valid but not proof (K2) and cannot strive to be a valid general argument that is an invalid or incomplete (K3).The research result shows that the construction of student’s proof on exponents was still in the K3categories, with details as follows: Students categorized K1(Arguments are valid and are proof) are 38.6%, students categorized K2(general arguments are valid but not proof are 17.5% and students categorized K3(cannot strive to be a valid general argument that is an invalid or incomplete) are 43.9%. Students who are categorized K1as a whole are able to perform constructive proof properly. Students categorized K2are still not able to perform constructive proof caused by mistakes in mathematical manipulation so that it shows the illogical thing. Students who are categorized K3are still not able to perform constructive proof caused by not being able to utilize the definitions and rules to be used in proving so that the proof done is invalid or unfinished.
High school students’ modelling ability in creative problem-solving
Authors: Esterlina  , Hartono Y , Hiltrimartin C , Indaryanti
Published: May 2020

This research is a descriptive study to see the application of the Creative Problem Solving learning model in the learning process and the problem-solving abilities of students in linear programming. The study was conducted at one of the high schools in Palembang with the subject of all students in class XI MIA 5. The learning process was adjusted to the phases of the Creative Problem Solving model. Researchers use problem-solving questions on the student sheet and test questions. Data collection techniques in this study using the results of student worksheets.
The effect of creative problem-solving models on students’ higher level thinking skills in linear programming
Authors: Adila R , Hartono Y , Indaryanti  , Scristia  , Yusup M
Published: May 2020

The purpose of this study was to determine the effect of Creative Problem Solving (CPS) on Higher Level Thinking Skills of Grade XI students in High Schools in Linear Programs. This research was carried out in SMA Negeri 5 Palembang. This research method is quantitative with only a control group posttest design. Regarding the experimental class will be given with Creative Problem Solving while the control class will be given with cooperative learning. High-level Thinking Skills are postal measurements and data will be analyzed by t-test. The results of the study said higher-order thinking skills in the experimental class were higher than the control class. This means that CPS influences Higher Level Thinking Skills in Class XI of SMA Negeri 5 Palembang in linear programming.
Development of mathmodule based on local wisdom and 21stcentury skills: linear equation system
Authors: Pujiastuti H , Suvati DA , Haryadi R , Marethi I
Published: May 2020

The purpose of this research is to develop a math module that emphasizes aspects of local wisdom and 21stcentury abilities. Procedure in this study refers to the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) model. The instruments used in this study are using test and non-test. Non-test instruments used in the form of a questionnaire to determine the assessment of experts and a questionnaire to determine student responses, while the test instrument is used to determine the feasibility of the product based on the percentage of student mastery learning. In this study involving media experts and content experts from teachers and lecturers who are experts in their respective fields. The number of subjects in this study were 29 students. The results showed that the percentage score obtained from media experts 93.81%, from material experts 87.56%, student responses 84.56%, and percentage of total students who achieve mastery learning 75.86%. In addition, the effectiveness test showed that the average of student learning outcomes above the passing grade score. Based on these results it can be concluded that the Math Module is feasible to use and can be used as teaching material in the learning process for teachers and students.
Students’ mathematical modelling skills with the model eliciting activities (MEAs) approach on material number patterns
Authors: Suryanto D , Hapizah
Published: May 2020

This research aims for obtain a description of the student’s mathematical modelling skills after the MEAs approach was applied to the material of number patterns. This type of research is a descriptive research study to the grades VIII.1 of SMPN 56 Palembang with the total number of 27 students. Data collection techniques are carried out with written tests, interivews, dan observation. Test questions is arrenged based on indicator of the skills of mathematical modelling, interviews were conducted as supporting data from test results, while the observation is done to see the approach process in MEAs during the learning. Based on the research result of obtained an information that the mathematical modelling skills to the grades VIII.1 of SMPN 56 Palembang are in good category with an average of 78.29. There are 17 students with a very good categories, 6 students with a good category, 3 students with sufficient categories, and 1 student with poor category. The result of interview showed that students are be able to identify the problems related to the patterns of numbers, but in the process of creating a mathematical model is still a difficult task, because the students do not remember the previous material, in solving the problems and in reinterpreting the mathematical results obtained there are students who are unable to do so. The process on the component apporach MEAs namely component newspaper article, readines or warm-up questions, the data tabel or mathematical information, and problem statment stimulate students’ mathematical modelling skills.
Measuring biology educations students’ critical thinking skill using online systems
Authors: Anwar Y , Permata S , Ermayanti
Published: May 2020

The times always had implications for the education, not least the trend of the industrial revolution 4.0. Therefore, students must be able to compete and use technology intelligently and appropriately. It is the obligation of educators to be able to equip and develop skills for students, so that they have high competitiveness. These skills can be in the form of critical and creative thinking skills. The aims of this study is to Measuring students’ critical thinking skill Using online systems. These skills can be measured quickly and precisely through online test, which is currently in line with the era of the industrial revolution 4.0 which emphasizes the internet of things. This measurement is carried out for biology education students in the first semester. The measurement results show that the critical thinking skills of biology students in grade one are still low. The categories of critical thinking skills that most high is the ability to Ask and answer questions the scores achieved by 63.3%. While the lowest category is create and determine the results of consideration with a score of 51.6%.
Use of bungee jumping with stem approach to improve science process skills
Authors: Haryadi R , Pujiastuti H
Published: May 2020

The purpose of this study is to make bungee jumping as a teaching aid or learning medium by using the STEM approach to the material of straight-line equations. The method used in this study is the experimental method using one post-test group design. In this study, students create projects, then students are guided to make bungee jumping. The process of making this bungee jumping goes through several stages which include the planning stage, the implementation phase, the report writing stage, and the presentation stage. The results of the project were assessed as feasibility of science process skills. The assessment is carried out at each stage of the process of making bungee jumping, starting from the planning to the presentation stage using a special assessment rubric. Learning using the STEM approach is expected to be able to build and develop students so that they not only memorize concepts, but are also guided to be able to integrate science, technology, engineering, and mathematics so as to improve students’ science process skills. The results show that making bungee jumping through the application of the STEM method can improve students’ science process skills in both categories by 79.13%.
Potential energy of mechanical system dynamics with nonholonomic constraints on the cylinder configuration space
Authors: Ariska M , Akhsan H , Muslim M
Published: May 2020

The formulation of the dynamics of a mechanical system can be done by the method of the Port Controlled Hamiltonia System (PCHS), but this method still leaves a Lagrange multiplier. Furthermore, the dynamics can be formulated using another method which is more systematic, namely the Routhian Reduction method. The method illustrates a system that is subject to non-holonomic constraints and external force, so that the Lagrange multiplier can be removed from the equation. Before formulating the dynamics of a non-holonomic mechanical system, the researcher will analyze the potential energy that occurs in a system that moves in the cylinder configuration space. Potential energy is the main part that must be completed to formulate the motion system of an object, because Routhian reduction only reviews the kinetic energy and potential energy in a dynamic system. The dynamical system reviewed is an object that moves both translation and rotation with a non-holonomic constraint, namely the Tippe Top (TT). The author analyzes the potential energy of a mechanical system that moves in a cylinder configuration space with non-holonomic constraints. Method in this research is a mathematical theoretical study. This method can reduce the equation TT’s motion with and without friction that moves on the surface of the cylinder clearly in the form of a set of differential equations. According the result of this riset, the potential energy for the TT with non-holonomic constraints that move on the surface in the tube can be determined by U = mg(r(1 − cos ρ ) + (R − acos θ ) cos ρ + asin θ cos φ sin ρ), transforming the TT’s Lagrangian that moves on a flat plane (Cartesian coordinates) to the tube coordinates, with reference to the height of the plane solved by coordinate transformation.
Development of ball capture test based on vibration sensor
Authors: Hartati  , Destriana  , Aryanti S
Published: May 2020

The purpose of this research is to produce a ball-to-wall throwing sensor based vibrating sensor that can be used to calculate coordination. This study uses an R&D research method developed by Borg and Gall. The subjects of this research trial were 28 physical education students, one test and measurement experts and one electronics experts to validate of the equipment test. The validation results obtained an average value of 80% so that a valid tool for further use of the trial was held to find that the catching device that was made could work as it should even though there was an error of 1.8% so that it could still be tolerated. This tool can be used as a wall ball throwing test tool to test athletes, students, or students so that it can facilitate tests conducted by teachers and trainers.
Development of authentic assessment model in the field of mathematic for early childhood in Palembang City
Authors: Syafdaningsih  , Suningsih T
Published: May 2020

The focus of this research is to develop a valid and reliable of authentic assessment models in the field of mathematic for children aged 6-7 years. This research is Research and Development (R&D) that produce the product in the form of authentic assessment model in the field of mathematic for early childhood. This product is standardized through expert validation. The step of this research is planning, development, and evaluation. Data were analysed using formative evaluation consists of expert review, one to one evaluation, and small group evaluation. The result of the research shows that the model of authentic assessment in the field of mathematic for early childhood has been produced.
Designing technologies for the interaction of cyber-physical systems in smart factories of the Industry 4.0
Authors: Zakoldaev D A , Shukalov A V , Zharinov I O , Zharinov O O
Published: May 2020

An actual task is to project industrial purposes cyber and physical systems interaction technologies in the Industry 4.0 smart factories. Three cyber and physical systems interaction options are described (mechanical, informative and man and machine) which are applied in the item designing components manufacturing technological process. A scheme of system projection route is proposed for the cyber and physical interaction technologies. A scheme of system projection route is proposed for digital production cloud resources (services and applications) which are applied to realize automatic informative interaction for cyber and physical systems digital twins.
The specifics of training for the industrial sector in the context of digitalization
Authors: Kudryavtseva S S , Shinkevich M V , Malysheva T V , Ishmuradova I I
Published: May 2020

The article provides an overview of the main trends in training for the industrial sector of the economy in the context of digitalization. The purpose of the article is to develop methodological tools for identifying areas of development of the knowledge economy in industrialized countries. Based on the methodology of cluster and correlation-regression analysis, the positioning of national economies in the theoretical space was carried out on the basis of indices - International Talent Index (GTI) and the Knowledge Economy Index. Based on the study, it is shown that, according to integral indicators, the position of the Russian economy in terms of the level of intellectualization and digitalization of the economy requires increasing financial, institutional and staffing to increase its competitiveness and adequacy to the trends of the global industrial system. The materials of the article can be used in the development of the main areas of training for the industrial complex of the national economy in the context of its digitalization.
Energy consumption of water supply system’s utilities in building
Authors: Khokhlov V , Razakov M , Razakova R
Published: May 2020

Authors have continued the study of the energy consumption in the building by various engineering systems in this work. The energy consumption of new engineering system, which was previously not taken into account in the total energy consumption of the building, is investigated. There is discusses the consumption of both electric and thermal energy by the building’s cold water supply system. The share of the cold water supply system in the specific thermal and electrical characteristics of the general water supply system (hot and cold parts of the water supply) of the building has been determined. Also, there is a special attention to the passive consumption of thermal energy by the cold water supply system, which was not previously carried out due to its small share in the total heat consumption of the building in this article. In this case, the “active heat energy” is used by the hot water supply system, which, despite the cold, must be forcedly heated in a special installation. Also, there is in this technique, takes into account seasonal fluctuations in the temperature of cold water by dividing the consumption of thermal energy into winter and summer periods of the year. It is also possible to do the full analyse the work of the frequency regulators widely used for the building’s water supply system, but it should also be taken into account that the regulators have additional energy costs which is depending on various operating modes (standby mode, regulation mode, etc.) . In this paper, authors consider only in systems where is only booster pumps, mechanical flow meters, and non-automated valves are installed. The objects in which this study was conducted are: a residential building and a low-capacity pumping station (up to 2000 m3 / h).
The economic performance of diesel engine when operating on methanol with a dual fuel supply system
Authors: Anfilatov A A , Chuvashev A N
Published: May 2020

Limited reserves of fuel of oil origin and a significant increase in the price of oil and its products have made the work aimed at finding and justifying the use of alternative fuels relevant. Among the latter, methanol occupies an important place, for the production of which raw materials are available on a large scale. Methanol can be obtained from natural gas, coal, biomass, or urban waste. Methanol can be attributed to renewable energy sources. It should be noted that the development of a fundamentally new engine model that meets modern environmental and economic requirements requires long-term research and high material costs, so our research is aimed at upgrading commercially available engines. The article presents the results of implementing a method for using methanol by feeding it directly into the combustion chamber and igniting it from the igniting part of diesel fuel. The economic indicators of the developed diesel engine when working on methanol under different load conditions are analyzed.
On the role of hydrated calcium carboaluminate in the improvement of the production technology of alumina from nephelines
Authors: Siziakova E V , Ivanov P V
Published: May 2020

The coagulation properties of HCCA in the system “aluminate solution - nepheline sludge” were studied, which allowed to improve the processes of thickening and washing of nepheline sludge. Solutions were developed aimed at the improvement of the coarse alumina production technology on the basis of increasing the efficiency of the carboaluminate method for separating Al (III) and Si(IV) hydroxo complexes and using the combined crystal growing modifier CaCO3 – HCCA.
Model for selecting test methods of detecting fraudulent electronic components
Authors: Shchenikov Ya A , Michurin S V , Sidorov V O
Published: May 2020

The article deals with the issues of electronic components incoming inspection processes risk management. A comparative analysis of the cost of using instruments used to identify fraudulent electronic components is carried out. A model developed using principles similar to FMEA-analysis is presented to select plans for detecting counterfeit and fraudulent electronic components based on the influence of factors such as the size of the batch, the criticality of application, and the source of supply.
Metrological support of diagnostic complexes for assessment of technical conditions
Authors: Skoriantov N N , Tselms R N , Okrepilov M V , Yu Litvinov B , Stepashkina A S
Published: May 2020

This article is dedicated to main aspects of implementation of monitoring of vibration in power equipment. An example of planning of current repairs for the analysis based on diagnostic signs is illustrated. The probable frequency ranges and magnitude of the increase in vibration levels of mechanisms for various operational defects are demonstrated. The requirements for the system of metrological support of diagnostic complexes are noted. The normalized metrological characteristics of measuring channels for diagnostic complexes are listed. The interface of a promising diagnostic complex for assessing the technical condition of rotary equipment is presented. The conclusion about the economic efficiency of the use of diagnostic systems with standardized metrological characteristics of measuring channels for monitoring of technical condition of rotor equipment is made.
A study of problematic issues in information resources integration in Russia
Authors: Vorobyov A A , Yanovitch K V , Rudenko R V , Shabaev R R , Levchenko G N
Published: May 2020

The introduction of computer, information and telecommunication technologies has radically changed the capabilities of management processes in all spheres of life of modern states. Large-scale automation of a wide variety of processes, monitoring of the state of objects and processes, comprehensive support of activities for preparation and decision-making in close to real time mode, allowed for a significant expansion of the scope for increased efficiency in management. Further integration of information management and telecommunication systems has made it possible to manage even more complex objects distributed geographically, due to a substantially decentralized structure and heterogeneous by its nature both in the composition of hardware and software, and in the composition and structure of information resources. Over the decades, the goals of integrating computing and information resources have gradually transformed, showing a significant dependence, on both the capabilities of computer hardware and communication systems, and additionally on the capabilities of software, up to the level of development of information technologies. Often ahead of integration opportunities, practical needs determine the need to manage increasingly complex facilities. The evolution of command and control facilities began from private processes of ensuring daily activities (or combat command and control), passing through similar processes at the level of territorial entities, ministries and departments, and in our time has led to the emergence of objects combined into a single complex structure, distributed throughout the state and intended for solving state tasks of strategic importance.
The influence of the knowledge lifecycle model on the trends in the training of technical specialists
Authors: Savchenko Y Y , Goleva O G , Korchagina I A , Ovsyannikova A V
Published: May 2020

The article is devoted to identifying the main directions of influence of knowledge lifecycle models on the training of technical specialists. The authors identify one of the primary problems of world education, which is the obsolescence of knowledge. Today, the pace of technological change and the introduction of innovations have a lifecycle of knowledge. The article proposes to present the knowledge lifecycle in the form of a forced model. The article suggests orientation to a spiral model of the knowledge lifecycle. Particular attention is paid to the initial stages of training and the formation of a basic set of foresight competencies. The paper considers the cycle of the level of competence of a student in a technical specialty, with the educational process being oriented towards a spiral model of the knowledge lifecycle. The article discusses the experience of countries occupying leading positions in the development of educational programs for the training of specialist engineers. The authors of the article determined that the orientation in the development of educational programs for the training of technical specialists, including engineers, towards a spiral model of the knowledge lifecycle will allow developing a model of advanced learning.
Non-rigid shaft processing with pre-emphasis of tool trajectory on CNC machines
Authors: Starostin A P , Pegashkin V F
Published: May 2020

This article presents shaft accuracy increase method using a mathematical modelling. This modelling considers deformation of process system at required process modes. Herewith, given are experimental findings for several approaches, which confirm the effectiveness of the method use. Thus, decrease of an error by at least 42% turned out well when using the given mathematical modelling.
Analysis and improvement of production planning within small-batch make-to-order production
Authors: Kapulin D V , Russkikh P A
Published: May 2020

This paper examines manufacturing planning within small-batch make-to-order. Electronic equipment manufacturing companies face challenges caused by increasing numbers of product variants as the demand for individualized products rises. Enterprises have to provide more individualized products instead of standardized ones. Cause of high variation in volumes and high mix of products it is difficult to use common planning tools. Known manufacturing planning methods cannot quickly realize adaptation for efficient use of enterprise capacities. This problem became big challenge for production planners. The purpose of this paper is to understand the requirements on enterprises to use planning and scheduling in small batch make-to-order production. We explore challenges associated with planning strategies. Finally, we consider a functional model of developing a planning system.
The phenomenon of memory in vanadium ox nitride films
Authors: Urinov Kh O , Jumanov Kh A , Amonov A K , Urinov J O , Sh Abduganiev A
Published: May 2020

Vanadium oxides are representatives of a wide class of compounds possessing a metal-insulator phase transition. The properties of both the oxides themselves and their solid solutions with oxides of other metals have been well studied. The question of the possibility of dissolving nonmetallic components in the V-O system and its wobbling on the metal-insulator phase transition remain an open question. The solution of this problem, apart from the scientific side can also have practical significance: in spite of the wide possibilities and uses of vanadium oxides in optoelectronics, microwave technology and other fields, the need to search for materials with given temperatures of metal-insulator phase transition and electro-physical characteristics is obvious. In this paper, an attempt is made to dissolve nitrogen in vanadium dioxide films during their deposition by thermolysis of nitrogen-containing alkoxy derivatives.
Environmental trends in fracturing technologies
Authors: Feodorov A B , Egorov A V , Sviridov L I , Shakirov P A , Kurochkin E S
Published: May 2020

The development of heavy oil fields has been actively on the agenda. The problem arises due to the depletion of deposits with easily recoverable reserves, as well as due to the large reserves of shale oil and gas. Modern technology is gradually reaching an acceptable level of profitability. Many tasks remain to reduce environmental pressure on the environment. An important step in this direction was made with the introduction of electric fracturing technology. Technologies for isolating the mining zone are being developed. A variety of approaches are used to recover heavy oil. Use formation heating in various ways. Separate formation fluids into fractions in order to diversify recovery methods. Great prospects are opened using combined methods of exposure to kerogen. At the same time, many questions remain on methods for the further development of shale hydrocarbons. This is the development of norms and rules for the development of heavy oil. Coordination of actions of law-enforcement bodies and activity of technology developers is required. It is necessary to develop technological approaches that have shown their environmental effectiveness.
Formation of the conditions for the development of innovation
Authors: Morkovkin D E , Lopatkin D S , Shushunova T N , Sharipov B K , Gibadullin A A
Published: May 2020

In recent decades, the issues of transition to a qualitatively new path of development have come to the fore and require urgent solutions from state and regional authorities, industry and corporate structures. The study analyzed the existing innovative potential of the Russian Federation, because of which it was revealed that the costs of research and development have been reduced in recent years, and the developed nanotechnology is not fully used. Based on the results, the study proposed a model of innovative development of the Russian Federation, which consists in the convergence of state, regional, industry and corporate structures in order to develop a unified innovation strategy of the Russian Federation. In conclusion, the study presents the main findings and results of the work.
Development of the management system for metrological assurance of measurements
Authors: Leonov O A , Zh Shkaruba N
Published: May 2020

Issues relating with solving the problems of setting up and managing the system for metrological assurance of measurements at machinery manufacturing plants have been discussed. In order to improve the quality of metrological assurance and mitigate risks relating with unreliable and inaccurate measurement results, it has been proposed to develop a system for management of metrological assurance of measurements. Standards which may be used for building such a system have been analyzed. Metrological assurance has been reviewed from the standpoint of PDCA cycle. Processes that are part of the system of metrological assurance of an enterprise have been reviewed. In accordance with the structure and requirements of ISO 9001 standard a register of processes has been developed and a functional model for the management system for metrological assurance of measurements at a machinery manufacturing plant has been developed.
Potential precision of terrain measurement using space lidars
Authors: Balabanova D A , Solomatin V A , Torshina I P
Published: May 2020

Laser remote sensing technologies are being actively developed and used, for instance, for modelling the terrain of the surface of the Earth, the Moon and other planets of the Solar System. Theoretical aspect of these projects is underdeveloped and not related to the measurement precision assessment. The article studies the calculation of the potential precision of range measurement and presents a method of calculation of the a space-based lidar parameters based on the condition of providing the set range measurement precision. It produces the equations that connect the potentially achievable precision of terrain (range) measurement and the receiver output signal-to-noise ratio to the lidar parameters and the parameters that determine the external conditions of such measurement. These equations form the foundation for a method of determining the lidar parameters and the requirements acting as the input data for a lidar development. It demonstrates that the space lidar altimeters are rationally associated with the term of the “energy space resolution” as the minimum size of the area of the terrain under resolution under the established range measurement error. The calculations carried out with the said method made it possible to assess the precision parameters of the currently used ATLAS space lidar. According to our data, a lidar is capable of providing the range measurement precision of several centimetres, provided that the objects are located within the area of several tens of cm2. The collected results bring the conclusion of the convergence of the results of the lidar precision calculation, carried out with the developed method and using the data published by NASA.
Method for calculating savings from using a more accurate measuring instruments
Authors: Leonov O A , Temasova G N , Shkaruba N ZH , Kataev Yu V , Yu Antonova U
Published: May 2020

Control operations are not related to the creation of material values, so one of the key tasks in economic terms is to reduce the losses arising in the process of control. The article deals with the types of losses that occur during control, as well as losses that are possible in the absence of control, the economic justification of control operations is presented. The result of the control is also affected by the measurement error, so using more accurate measurement tools reduces the loss of internal and external defects due to inconsistency of data and by reducing the number of incorrectly accepted and incorrectly rejected products, but reduces the cost of measurement, while the use of more rough measurement tools reduces the cost of measurement, but increases the loss of internal and external defects. Therefore, when choosing measuring instruments, it is necessary to be guided not only by the permissible error value for this measurement, established in the relevant regulatory documents, but also by the economic component of control. On the basis of the presented material, a method for calculating the savings from using a more accurate measuring tool and the results of evaluating this savings is proposed.
Formation of mechanisms for ensuring the sustainability of industry
Authors: Abramov V L , Kodirov F A , Gibadullin A A , Nezamaikin V N , Borisov O I , Lapenkova N V
Published: May 2020

The effective use of natural resources for to meet the needs of society and the state economy became relevant in the middle of the last century, when the UN began to hold the first conferences on sustainable development. Today, these issues are shifting to the prism of the efficient use of natural resources and the conservation of ecological diversity for future generations. The work analyzed the indicators on the volume of pollutant emissions, current expenditures for ensuring environmental stability and the share of disturbed lands. Because of the analysis, it was found that not all emissions and waste are effectively disposed of, and land reclamation after mining is only one third. The work presented measures to ensure environmental protection and measures that need to be implemented at the state level. In conclusion, the study presents the main findings and results of the work.
Procedures improvement of forming the execution labor intensity of R&D
Authors: Kaloshina M N , Dianova E V
Published: May 2020

The study purpose is to increase the validity of the evaluating labor costs process on the performing research and development work (R&D). The official methods in force in the Russian Federation have applied as a methodological basis for improving the procedure as well as domestic and foreign methods for assessing the labor intensity of R&D. The proposed principles for assessing labor intensity are based on unit labor costs, applied for three types of R&D (typical basic research, changes in the main functional systems, and new development), and take into account three complex correction and labor deflation factors. The scientific novelty of the study is the formation of new principles for calculating the complexity of R&D.
The concept for biometric system development based on modern error correcting coding
Authors: Gladkikh A A , Volkov Al K , Volkov An K , Saeed B A S , Yudaev V V
Published: May 2020

The objective of the work is to develop new algorithms for error-correcting coding in biometric systems that best meet modern challenges for such systems. The article presents directions of biometric system development that take into account the prospects of their use in combination with modern network technologies, methods of cognitive data processing, cryptographic systems and artificial intelligence. The objective necessity for developing advanced error-correcting coding methods in such systems is proved that meets the increased requirements for the reliability of the processed data and its processing speed in real time. It is proposed to use a cascade design for processing block redundant codes with a system for cluster processing of polar codes (PC) at the internal decoding stage and cognitive processing of Reed-Solomon (RS) code combinations at the external decoding stage.
Satellite monitoring systems in forestry
Authors: Zhichkina L N , Nosov V V , Zhichkin K A , Aydinov H T , Zhenzhebir V N , Kudryavtsev V V
Published: May 2020

Space technologies in Earth remote sensing are among the most relevant technologies for monitoring forestry. Difficulties of controlling tree felling and other activities by forestry employees constitute an objective problem which can only be solved by application of space monitoring instruments. The article shows that using the LandViewer Software would provide regional forestry a wealth of information needed for ongoing work and detection of violations. The considered examples demonstrate that space monitoring provides a more accurate determination of the size of forest blocks and the felling volume.
Wavelet method of hiding text information in audio signals
Authors: Manuilova N N , Khairullina L E , Khabibullina G Z , Minnegalieva Ch B , Makletsov S V , Bronskaya V V , Kharitonova O S
Published: May 2020

In the last few years, in connection with the widespread use of media networks for transmitting multimedia information, it is important to build stegosystems on their basis. The least significant bits for embedding a message can turn out to be ineffective using traditional methods of modification and steganography methods, allowing to embed messages in areas that cannot be significantly distorted during processing by modern encoders, are especially important. One of the tools that allows this embedding is a discrete wavelet transform. Wavelet transform is a relatively new and powerful analysis and processing tool. The method of secret transmission of a text message by hiding in sound files and subsequent recovery without loss is considered in this article. The basic of method is a discrete wavelet transform on biorthogonal wavelets. A web application implementing this method has developed. The implementation language is Python.
Prevention of attacks with distributed denial of service for information networks of cyberphysical systems
Authors: Korshunov G I , Lipatnikov V A , Omarov R G , Varzhapetian A G
Published: May 2020

The analysis of methods for protecting information networks of cyberphysical systems from the most relevant types of attacks based on the reflection and amplification of traffic is presented. The advantages and disadvantages are revealed. The directions for the development of effective methods of protection are shown. A method for protecting information networks from attacks with distributed denial of service with prediction is proposed.
Influence of technical condition parameters on the period of safe operation of technological pipelines
Authors: Kulakov P A , Rubtsov A V , Afanasenko V G , Mukhametzyanov Z R , Khasbutdinova E V
Published: May 2020

The task is to assess the further period of the total operating time of pipeline systems after monitoring their technical condition, depending on the generalized impact of the technical parameters of oil and gas processing equipment. Nine signs of pipeline systems were identified, and the assessment was carried out using an indicator characterizing their residual life. The authors developed a mathematical model, using calculation methods obtained diagnostic coefficients and informativeness of the sign for each of the time periods, which are determined by experts. An algorithm for estimating the residual resource of technological pipelines is proposed. Conclusions are drawn about the possibility of using the proposed algorithm to implement tasks of this type.
Adaptation of receiving channels to the spectrum of the received signal
Authors: Zhukov A O , Valyaev I N , Kovalenko V P , Turlov Z N , Chebotarev A S , Kartsan I N , Shumakova N A
Published: May 2020

The article deals with the implementation of optimal filtering in the correlation processing of random signals with a priori unknown characteristics of the spectrum. A scheme of the optimal processing device operating in a wide dynamic range of received signals is synthesized, adaptation to which requires the joint use of automatic gain control and automatic bandwidth adjustment.
Problems and advantages of SCADA systems when performing measurements at hazardous production technologies
Authors: Epifancev K , Mishura T
Published: May 2020

Currently, much attention is paid by science and technology to remote control of hazardous production processes. One of the monitoring tools is the SCADA system, which allows you to evaluate the readings of measuring transducers and promptly report their critical changes to the operator. Of course, this system has certain disadvantages along with its efficiency and high functionality - first of all, the lack of basic methods for checking the system as a whole, evaluating the error, and evaluating the results of the values given. If we think from the standpoint of digitalization, SCADA is an intellectual double, an artificial intelligence that allows us to implement the basic principles of the 4th industrial revolution. The advantages and disadvantages of such systems will be discussed in this study
Practical application of regression analysis to study load parameters of mine excavator equipment
Authors: Velikanov V S , Dyorina N V , Rabina E I , Yu Zalavina T
Published: May 2020

The main failure causes of the working equipment of mine excavators with gear rack pressure are: a high level of their dynamic loading, exceeding the permissible level; a construction form leading to a high concentration of stresses; consequences of repair actions; relatively low qualifications of drivers and other factors. Using regression analysis of statistical data from a sample of a computational experiment, the authors of the article obtained an original mathematical model in which heterogeneous factors are interconnected.
Structural-parametric synthesis of mechanisms in CAD-systems
Authors: Brovkina Yuliya I , Petrakova Ekaterina A
Published: May 2020

The article describes the methodology of structural-parametric synthesis of mechanisms using CAD-tools of computer-aided design. This approach makes it possible to reduce the time required to develop mechanisms schemes for specific engineering solutions and to calculate approximate values already at the development stage of the kinematic scheme. In the mechanism synthesis, one of the main tasks is to determine the operating space and the mechanism output link motion. Using CAD programs to determine the parameters of kinematic schemes reduces design time, and the use of animation functions allows one to visualize the synthesis process.
Environmentally friendly guar gum sulfation with a sulfamic acid-urea mixture
Authors: Kazachenko A S , Yu Vasilyeva N , Malyar Y N
Published: May 2020

The guar gum was sulfated for the first time with a deep eutectic solvent, a sulfamic acid / urea mixture at a ratio of (1:1). The optimal conditions of the process are shown to ensure the production of guar gum sulfate with a maximum sulfur content (16.1% wt.). The introduction of a sulfate group into a guar gum molecule is proved by elemental analysis. A mathematical model of the process of sulfation of guar gum is calculated. It is shown that the resulting model has high predictive properties. The developed method is environmentally safer due to the fact that it eliminates the use of toxic solvents.
Control system of the silo aeration process at the cement production
Authors: Muravyova E A
Published: May 2020

The article developed a control system for the silo aeration process. The object of control is cement silo. Cement silo is a container for storing dry cement, building mixtures or other finely dispersed materials used in the construction or production of building elements for various purposes. The task is to improve the silo control system for cement storage. Recommended ventilation times for aeration sections for commonly used cement silos are presented in terms of silo volume and the amount of material loaded. A silo aeration algorithm was compiled with alarm signals at the operator’s workstation. Four different silo operation modes were compiled to control the storage of material inside the silo: “normal emptying”, “emptying the outer ring sector”, “emptying the chambers”, “complete emptying”. A control program was developed for the cement silage aeration process in the Unity Pro XL program in FBD language.
Method for reducing the gas factor in hydraulic fluids
Authors: Lunev A S , Nikitin A A , Kaverzina A S , Novik A V , Kramarenko V A
Published: May 2020

This paper considers technologies for reducing the gas factor in hydraulic fluids used in a hydraulic system. Methods and means of reducing the gas factor include three main groups: gas relief, gas separation, and degasification. The work is important because the gas presence adversely affects the operational performance and dynamics of the all system. Finding the most effective way to reduce the gas factor is of primary importance.
The impact of viscosity and propagation velocity of the flow on the initiation of the cavitation in a gear pump
Authors: Lunev A S , Kaverzina A S , Nikitin A A , Novik A V , Kramarenko V A
Published: May 2020

The article analyzes the cavitation behaviour of gear pumps. If the liquid is more viscous and the liquid volume is underpressure less time, the dissolved air escapes in a significantly less amount than under a given pressure according to Henry’s law.
The effect of processing in a SHF electromagnetic field on the parameters of vibro-wave processes generated by the impact of a solid body in cured polymer composite materials under the influence of climate factors
Authors: Zlobina I V
Published: May 2020

The studies have been conducted on the influence of environmental factors on vibration-wave processes initiated by the impact of a steel ball in control, cured carbon fiber and fiberglass processed in the SHF electromagnetic field. It is shown that the presence of control and experimental polymer composite materials (PCM) in full-scale conditions under the influence of environmental factors for 3 months leads to a significant decrease in the maximum and average values of vibration accelerations and a reduction in the vibration damping time. At the same time, the prototypes are characterized by a smaller decrease in the maximum values of vibration acceleration and stability of average values. In comparison with the initial control samples, the values of these parameters for carbon fiber and fiberglass are reduced by (43-59) % and (40-46) %, respectively.
Quality assurance in the process of machining of parts made of heat-resistant alloys with the help of abrasive electrochemical grinding
Authors: Mingazhev A D , Taimasova L A , Gunderov D V , Gafarova V A
Published: May 2020

For the purpose of efficient treatment of heat-resistant alloys, an abrasive electrochemical part grinding method is proposed using an advanced abrasive wheel cleaning method by means of abrasive wheel contamination assessment. The process was researched and it was revealed that a parameter which is a ratio of cutting force against the ECT (electrochemical treatment) phase duration within one round of spindle revolution is versatile, which means it does not dependent on the EDM electrode cutting feed rate, the depth of treatment, and is an independent value.