bluuebunny/crossref_metadata_2025_split huggingface dataset:
Model of an automated information control system based on key performance indicators for controlling production processes
Authors: Nazarevich S A , Vinnichenko A V , Morozov S A 
Published: May 2021

Abstract
The article presents the problems of managing the key performance indicators of the organization’s production processes. Various situations of terminological conflict and other issues of interpretation of indicators reflecting the effectiveness of management of production systems are considered. A model of automated information and control system and its decomposition of components for managing the goals and objectives of structural divisions is proposed.
Problems of methodological support in the verification of instrument current transformers
Authors: Vikhareva N A , Krylov V S , Simonova G V 
Published: May 2021

Abstract
The article deals with the technical and methodological problems that arise during the verification of transformers at the site of operation. Devices of this type are included in the systems of commercial metering of electricity consumption; therefore, periodic verification of their characteristics is necessary, however, in most cases, verification is necessary to perform at the installation site for a number of reasons that exclude the dismantling and transportation of transformers. The article provides an analysis of the reasons that limit the possibility of using on-site verification of transformers due to the principle of their operation and design features. The possibility of solving the identified problems as a result of the use of improved equipment and measurement rules is shown. A significant dependence of the influence of the load on the secondary winding of transformers to the error of measurement results has been established, and for voltage transformers this dependence is stronger than for current transformers. It is also proposed to provide for unique measuring instruments, such as transformers, methods for determining metrological characteristics available for their implementation at the site of operation, the use of which will lead to significant savings in verification costs.
Machinability metallic materials estimation based on acoustic emission of turning
Authors: Khripunov N V , Gorshkov B M , Samokhina N S 
Published: May 2021

Abstract
An experimental study of the possibility of using the acoustic emission signal during turning to assess the machinability of steel by cutting has been carried out. According to the results of previous studies, it has been shown that the use of the total acoustic energy of the cutting process to assess the machinability does not have sufficient resolution. The article presents the results of measurements of the acoustic emission signal in comparison with the results of measuring the tool wear during resistance tests. A group of samples of six steels with a known chemical composition and mechanical properties were used as materials. The group includes steels that differ a priori in machinability and steels whose machinability cannot be predicted in advance. Endurance tests were carried out for face turning with a tool made of highspeed steel with a variable cutting speed. The maximum height of the wear area in the direction perpendicular to the cutting edge was used as a criterion for machinability. The acquisition of the acoustic emission signal was carried out by a broadband sensor built into the tool holder with a preamplifier of 60 dB and a bandwidth of 50...1000 kHz. The integral energy characteristic of the RMS signal is used as a criterion for predicting the processability. As a result of the experiments, it was found that the use of an acoustic emission signal has a good resolution in assessing the machinability by turning steels.
Research of pneumatic cylinder actuator’s dynamics
Authors: Nikitin A A , Sorokin E A , Nikitina T N , Andreychikov I V , Dunaeva S P 
Published: May 2021

Abstract
Pneumatic actuators are widely used in industry as the most reliable automation tools. The performance of automated systems depends on the speed of pneumatic actuators. Therefore, the development of methods for studying the dynamic processes of pneumatic actuators is an urgent task. This paper proposes a mathematical model of a pneumatic actuator of the hoist, which is convenient for computer calculations using universal mathematical packages. Friction forces on transient processes in a pneumatic actuators are investigated as an example of the application of a mathematical model.
Stress-deformed state of the container with the presence of an displacement of the butt edges in the ring welded joint of the body
Authors: Rubtsov A V , Kulakov P A , Arkhipova K S , Mukhametzyanov Z R , Zakirnichny E G 
Published: May 2021

Abstract
Capacitive equipment of oil refineries is widely used in the operation of technological units and plays one of the dominant roles, both in terms of metal consumption and the degree of use. Depending on the purpose, the required capacity of the stored product and constructive features, containers reach rather large overall dimensions, which creates certain difficulties in diagnosing the entire surface of the vessel. In the process of manufacturing and repairing the bodies of technological tanks, it is possible to form such a geometric defect as “displacement of the edges of the abutting elements” when welding cylindrical shells to each other by circular welded seams. In the presence of geometric defects of this type, additional stress concentrators are created in the areas of the presence of these defects, which may be a prerequisite for the transition of an object to the limiting state in a fairly short period of time from the action of increased pressures and temperatures. Also, the presence of displacement of the edges on the body of the capacitive apparatuses can have a negative effect on the stress-deformed state of the considered capacity as a whole and to the formation of dislocation zones of increased stresses. Therefore, the actual work is the study of the stress-deformed state of the container with the presence of a zone of displacement of the edges in the circumferential welded seam of the body from the viewpoint of the formation of zones of increased stress. This work evaluates the stress-deformed state of the capacitive apparatus under the influence of operating parameters with a different location of the edge displacement zone in the circumferential weld on the apparatus body.
Computational evaluation of the effectiveness of therapy method with help recurrent analysis
Authors: Titov V E , Dick O E 
Published: May 2021

Abstract
Using the method of recurrent analysis of electroencephalograms of the brain with subsequent one-way analysis of variance, the effectiveness of the therapy method used in the clinic, associated with the formation of stable functional connections of the brain in patients with disorders of the functional state of the central nervous system corresponding to the initial stage of vascular pathology, was assessed. Decrease in the percentage of recurrent points located on the diagonal lines of recurrent diagrams and the coefficient of mutual correlation between the probabilities of recurrences of the light signal and the response of the brain to the theta and beta frequencies, as well as an increase in these indicators for the alpha-range frequencies after therapeutic effects, confirm the effectiveness of the considered therapy.
Microspectral method for assessing the functional state of chickens’ hepatocytes under intestinal infectious diseases
Authors: Akchurin S V , Larionov S V , Krasnikova E S , Akchurina I V , Krasnikov A V 
Published: May 2021

Abstract
Evaluation of the functional state of hepatocytes of intact chickens and chickens under experimental klebsiellosis, escherichiosis and salmonellosis is given using luminescence spectral analysis with fluorescent dye 5-([4.6-Dichlorotriazin-2-yl]amino) fluorescein hydrochloride. A gradual increase in the proteins number in the cells was recorded from 1th to 30th days in intact chickens, which indicated an increase in the metabolism level in chicken hepatocytes. The reverse trend was observed in chickens with experimental intestinal infectious diseases.
Technological processes parameters evaluation in the fire risk industrial objects analysis
Authors: Pozharkova I N 
Published: May 2021

Abstract
The article discusses the simulation modelling use to improve the industrial facilities fire hazard analysis solving the problem efficiency on a thermal power plant example. The fuel supply system in the SimInTech software environment model is presented, as well as the fire risks calculation results for the research facility using the received model pressure values in the oil pipeline. The estimated fire risk estimated by and without simulations was compared.
Development of methods for assessing the performance of teachers using of TUIT-LMS data
Authors: Alisherov F A , Iskandarov S Q , Sh Bekturdiyev S , Khujaev O K 
Published: May 2021

Abstract
The use of data mining methods is one of the current trends, which is widely used in finance, health, telecommunications, e-learning and others. Much of the research in the field of education is focused on the assessment of students’ performance. But the impact of teachers on the quality of education is also significant. The traditional way to evaluate a teacher’s performance is to conduct an assessment survey that takes into account the student’s point of view. The article solves the problem of classification of teacher’s activity using Generalized Linear Model, Deep Learning, Decision Tree, Random Forest methods based on the results of the survey and textual data based on the survey data conducted in the TUIT-LMS system and determines the reliability of the results.
Monitoring of ice formation of overhead power line wires
Authors: Panteleev V I , Maleev A V 
Published: May 2021

Abstract
Reliable operation of electric power systems is impossible without the creation of modern monitoring devices that control all processes of production and distribution of electric energy. The authors of the article developed an intelligent system for monitoring ice formation and determining the wire sag boom using machine vision technology. The monitoring system under consideration is placed on a support in close proximity to the wire and consists of the following main elements: an electronic unit, an optical sensor, a solar panel and a GSM antenna. The developed monitoring system in close proximity to the thickness of the ice wall and indirectly, by the angle of deviation of the wire relative to the horizontal position, to determine the mass of ice deposits and the arrow of the wire sag.
Effective criteria for determining the number of measurements selection
Authors: Barbashov N N , Barkova A A 
Published: May 2021

Abstract
This paper describes a method for determining the number of measurements, which allows you to increase the accuracy of measurements, as well as reduce the number of measurements in cases where the variance is small. In the same cases, when the share of random error is significant, additional measurements allow you to avoid an erroneous result, which can lead to a defective product.
Selection of rational algorithms for controlling high-precision details
Authors: Barbashov N N , Samoilova M V , Abdullina L R 
Published: May 2021

Abstract
One of the most important and complex issues in the automation of technological processes is control automation. At present, active control is the most promising, aimed at ensuring the required quality of dimensional and other parameters of products in the very process of their production, at automating high-precision technological processes, reducing losses from rejects and control costs. In modern production with the help of active control means, the problem of increasing the manufacturing accuracy can be solved by choosing a rational control algorithm. To create an effective control system for the accuracy of machining a part, active control devices are often used that work according to various algorithms. Most modern machine tools are equipped with active control sensors that allow measuring the dimensions of the manufactured parts and setting up the machines during operation. The sensors are controlled by microprocessor blocks, which allow additional control to be introduced and the machine to adapt to changing processing conditions, which increases productivity and accuracy. Modern software allows you to effectively control the processing process, therefore, the choice of a rational control algorithm plays a special role.
Development of a control and measuring method for assessing the state of patients with «HIV + tuberculosis» coinfection
Authors: Ponomarev S B , Averyanova E L , Ponomarev D S , Lakina I A 
Published: May 2021

Abstract
The scientific research presents a control and measuring method for assessing the condition of patients with HIV-associated tuberculosis. The methodology was developed using a point-based method for assessing indicators. The studied parameters were grouped into 4 clusters (anamnestic data, comorbid diseases, clinical data, laboratory studies). The metrological support of anamnestic data and clinical data was considered in particular detail. The approbation of the technique was carried out on patients who are kept in institutions of the penal system. The applicability has been proven using the methods of systems analysis (correlation, regression and analysis of variance data).
Instantaneous gas flow rate estimation in the gas-gathering system flowline by indirect measurement method
Authors: Krasnov A N , Yu Prakhova M 
Published: May 2021

Abstract
Implementation of modern automation systems on the northern gas fields located at the final stage of operation, is unprofitable economically and is not always possible technically. At the same time, the competent operation of such deposits requires constant monitoring for the state of gas wells and the shelves of the gas transmission network. In particular, the pressure and temperature is obligatory at the mouth of the well and at the end of the shelf. Also an important parameter from the point of view of regulating the modes of the wells is the instantaneous flow rate of the shelf, which is currently not measured at the old deposits. The article proposes to assess the Instantaneous consumption by an indirect method, according to the values of pressure and temperature. The algorithm for calculating the consumption is proposed, the testing of which at the Urengoy gas condensate field confirmed its adequacy. The monitoring system of technological parameters is built into gas fishery ACS. The algorithm visualization is implemented in the SCADA HMI / Cimplicity software package.
Design of Flexible Jig for Leg Manufacturing on Jack-up Plateform
Authors: Wang Shun , Hou Lixun , Wang Ji , Liu Yujun 
Published: May 2021

Abstract
Due to various designs in racks and semicircle tubes, dedicated jigs are used in the manufacturing of most jack-up legs, which decreases the productivity. In this research, a new flexible jig system with jig and support column is designed to meet different production requirements of many jack-up platforms. Firstly, two kinds of adjustment bolts i.e. position bolts and angle bolts are designed for accurate positioning and attitude adjusting. Moreover, considering supporting height differences of the legs, an integrated mode of standard and specific components is adopted in construction of the support columns. By using of the new flexible jig, productivity of many jack-up platforms construction is greatly improved.
Review on Stick-slip Vibration’s Mechanism Analysis and Its Control Strategy in Deep Drilling with Drag Bits
Authors: Shuguang Liu , Wuyang Chen , Kecheng Wu , Jia Jiang 
Published: May 2021

Abstract
The stick-slip Vibration is one of the major causes for drilling quality reduction, shorter drilling tool lifespan, drilling efficiency decrease, it also affect the drilling cost and completion period seriously. The complex situations in the process of drilling result in the slow progress in this aspect, they rarely break through. The recent advances are outlined in stick-slip vibration of the drill string in three areas: theoretical analysis, experiment research and control strategy. The main research direction, methods and existing problem in the progress are introduced, which will provide reference and guidance for further research.
Development of a self-driving car prototype for educational and research purposes
Authors: Fan X , Zhang Z , Wang Y 
Published: May 2021

Abstract
Self-driving car (SDC) is one of the most challenging topics in artificial intelligence. However, current off-the-shelf SDC platforms are expensive and difficult to modify, which prevents more researchers from working towards the improvement of self-driving technologies. This paper presents the development of a SDC prototype with low-cost sensors and an open-source software platform for educational and academic research purposes. The goal of such a SDC prototype is to serve as a testbench, which allows students and researchers to easily test new algorithms of SDC. Localization is one of the most basic and important problems in SDC. To achieve high performance using low-cost sensors, a localization method based on Lidar-INS fusion was investigated under the framework of Kalman filtering. Autonomous driving experiments were conducted on roads of a university campus environment and the results are used to show the performance.
An ADRC-based Stick-slip Vibration Control Method for Drill String
Authors: Shuguang Liu , Wuyang Chen , Kecheng Wu , Jia Jiang 
Published: May 2021

Abstract
For complex deep wells, the drill string stick-slip vibration is a intensive destructiveness torsional vibration caused by twisting vibration and down hole drag. This phenomenon can be explained that the bit is motionless for some time, and when the torque on drill string is large enough, the bit suddenly rotate at a high-speed. The stick-slip vibration has become a major problem to be solved urgently in the exploration and exploitation of deep and ultra-deep wells. In drilling operations, the stick-slip will occur in drilling for more than half of the time. Usually, the stick-slip vibration leads to the decrease of penetration rate and the increase of completion cycle. In serious cases, it leads to drill string fracture, bit failure, and even serious downhole accidents. In this thesis, the drill string torsion model is established, the drill string stick-slip vibration mechanical model is proposed, the equation of stick-slip vibration motion is analyzed and the general laws of drill string stick-slip vibration are acquired. In order to effectively suppress stick-slip vibration, an auto-disturbance rejection control (ADRC) method is adopted. Result of experiment shows that the soft-torque control method can make the actual speed of motor changed according to the torque, so as to decrease the motor torque fluctuations, eliminate stick-slip vibration and achieve the drill string soft-torque control.
Surface Topography of the Metal surface in Robot Polishing under Control Force
Authors: Zhao Wenliang , Mohsin Imran , Huang Longlong , He Kai 
Published: May 2021

Abstract
Polishing is an important finishing process in the field of manufacturing, which enhances product quality and increases its life span. Compared with manual polishing, robotics polishing has advantages in terms of cost and productivity. This paper presents a new study on the surface topography of metal workpiece in the robotic polishing test. Various workpieces with different surface roughness were polished with the industrial robot under similar polishing parameters, and the variation of surface topography with polishing was studied utilizing microscopic scanning.
Autonomous vehicle adoption: use phase environmental implications
Authors: Kontar Wissam , Ahn Soyoung , Hicks Andrea 
Published: May 2021

Abstract
This paper investigates the environmental trade offs resulting from the adoption of autonomous vehicles (AVs) as a function of modal shifts and use phase. An empirical approach is taken to formulate a mode choice model informed from a stated preference (SP) survey conducted in Madison, Wisconsin. A life cycle analysis based on well-to-wheel model is then conducted to quantify the use phase environmental impacts across different categories. The mode choice analysis reveals the potential users of AVs and its attractiveness as a mode of transportation, ultimately competing with traditional modes available. This translates into modal shifts that are shown to result in an expected increase in environmental impacts across all studied categories: energy consumption (5.93%), greenhouse gas emissions (5.72%), particulate matter (6.80%), sulfur (6.85%) and nitrogen oxides (5.70%). The adoption of electric AVs (E-AVs) is then analyzed as an offsetting strategy to combat the increase in environmental impacts. The analysis reveals that E-AVs are capable of offsetting the foreseen impacts, yet their effectiveness is dependent on the electricity generation mix and adoption rate.
How unprecedented was the February 2021 Texas cold snap?
Authors: Doss-Gollin James , Farnham David J , Lall Upmanu , Modi Vijay 
Published: May 2021

Abstract
Winter storm Uri brought severe cold to the southern United States in February 2021, causing a cascading failure of interdependent systems in Texas where infrastructure was not adequately prepared for such cold. In particular, the failure of interconnected energy systems restricted electricity supply just as demand for heating spiked, leaving millions of Texans without heat or electricity, many for several days. This motivates the question: did historical storms suggest that such temperatures were known to occur, and if so with what frequency? We compute a temperature-based proxy for heating demand and use this metric to answer the question ‘what would the aggregate demand for heating have been had historic cold snaps occurred with today’s population?’. We find that local temperatures and the inferred demand for heating per capita across the region served by the Texas Interconnection were more severe during a storm in December 1989 than during February 2021, and that cold snaps in 1951 and 1983 were nearly as severe. Given anticipated population growth, future storms may lead to even greater infrastructure failures if adaptive investments are not made. Further, electricity system managers should prepare for trends in electrification of heating to drive peak annual loads on the Texas Interconnection during severe winter storms.