bluuebunny/crossref_metadata_2025_split huggingface dataset:
The dynamics simulation of knowledge potentials of agents including the feedback
Authors: Pasichnyk V V , Bomba A Y , Nazaruk M V , Kunanets N E 
Published: March 2021

Abstract
The conceptual and mathematical models of the agents’ knowledge potential redistribution considering their constituent components are constructed in the paper. A nonlinear model describing the dynamics of agents’ knowledge potentials is developed taking into account the feedback effects (agent – student) on the source of knowledge (teacher / lecturer). In particular, the procedure of constructing a multicomponent two-dimensional array of discrete values of the knowledge potential constituent components for generating procedures to enhance (improve) the professional competences of knowledge sources, is generalized and specified.
Modern technologies in the development of professional competence in teachers from professional (vocational) education schools
Authors: Radkevych V , Kravets S , Herliand T , Radkevych O , Kozak A 
Published: March 2021

AbstractThe article discloses the peculiarities of developing professional competence in professional training teachers. This process mostly involves using traditional pedagogical technologies. The article presents results of the ascertaining experiment and indicates the need for continuing professional development of teachers based on innovative principles. It also suggests using up-to-date pedagogical technologies of distance and project-based learning and production technologies to develop professional competence in actors in the educational process (teachers and students). This refers to the implementation of a competence-based approach in the professional education system. It is reflected in the development of professional competence based on some steps. They include expanding informational and educational space for actors in the educational process and individualizing learning using modern information resources (distance technologies); ensuring the interaction between actors in the educational process, as well as the joint realization of searching, cognitive and research activities (project-based technologies); organizing the educational process under the social partnership, taking into account the timely response of the professional education system to the emergence of innovations in production and the service sector (production technologies).
Developing digital competence of teachers of Humanitarian disciplines in the conditions of COVID-19 quarantine measures
Authors: Trubavina I , Dotsenko S , Naboka O , Chaikovskyi M , Meshko H 
Published: March 2021

AbstractThe relevance of the research is explained by the necessity of developing digital competence of teachers of Humanitarian disciplines at the higher education institutions (HEIs) in the conditions of the quarantine measures to prevent the spread of COVID-19. It is particularly challenging for teachers of Humanitarian disciplines, who are not specialists in the digital sphere as their profession is focused on humans. The purpose of the paper is to define the influence of the quarantine on the work of teachers at HEIs, revealing the level of the development, challenges and peculiarities of enhancing the digital competence of teachers of Humanitarian disciplines, theirs needs in education and giving recommendations how to arrange education and make administrative decisions. The methods of the research are survey, theoretical analysis, others. The results are to define the peculiarities of the influence of the quarantine on the arrangement of distance learning, the peculiarities of developing digital competence of teachers during the quarantine, their needs in education, the challenges in conducting mass distance learning, the determined complex of scientific approaches to developing digital competence. The practical significance of the research refers to developing three internship programs, based on the results of diagnosing teachers’ digital competence.
Theoretical and methodological bases of designing the educational institution information and consulting environment
Authors: Lavrentieva O , Horbatiuk R , Skripnik L , Kuchma O , Penia V , Pahuta M 
Published: March 2021

AbstractIn article the definition of the educational institution information and consulting environment has been formulated. It was found the such environment is a relevant part of the information education society, within which it becomes possible exchange of information and consultative support of subjects of the educational process via the computer focused technologies. The semantic and functional content of an educational institution information and consulting environment have been specified. Its social, spatial-object, psychological and pedagogical components have been analyzed. The criteria for assessing the quality of the information and consulting environment have been described. The main factors and leading pedagogical technologies of organizing and forming of the information and consulting environment have been determined. The pattern of the educational institution information and consulting environment covering organizational, technical methodical resource areas have been established. Based on the results of empirical research with use of content analysis and factor analysis the benefits and risks of the educational institution information and consulting environment have been reviewed and summarized. It is concluded that the organization of the educational institution information and consulting environment will promote increase the efficiency of the educational process and the quality of educational services.
Implementation of professionally oriented ICT in the process of managers training
Authors: Tkachenko L P , Dolgopol O O , Zhiglo O O , Kiryanova O V , Ivanova O A 
Published: March 2021

AbstractThe article touches upon the problem of introducing professionally oriented software products based on information and communication technologies into the educational process of training managers of the hotel, restaurant and tourism business. The purpose of the study is to prove the effectiveness of the implementation of professionally oriented software products based on ICT in the training of managers. The research is based on the analysis of recommendations of employers and managers of the specialties “Tourism” and “Hotel business”, the content of educational programs for training bachelors in management, the content of general professional and special competencies, the structural and logical scheme of disciplines. The most effective information and communication technologies using computer software products that contribute to the formation of a set of professional competencies in future managers have been identified: MS Project, Teamwork, TeamLab, Open Workbench, GanttProject, dotProject, Outlook, OneNote, EverNote, Nirvana, Wunderlist, Toggl, MS Office, Office 365, Document.Online, AllFusion Process Modeler 7, MS Visio, MS PowerPoint, MS Sway, Libre Office.Impress, FreeMind, Mind42, ViSta, MacANOVA, Matrixer. The effectiveness of these technologies has been experimentally tested in the course of practical training in the format of full-time distance learning and practical training of student managers. The research describes the technology of using professional software products in the educational process. The effectiveness of these technologies has been experimentally tested in the course of practical training in the format of full-time distance learning and practical training of student managers. The research describes the technology of using professional software products in the educational process. The results of the pedagogical experiment confirmed that the introduction of information and communication technologies contributes to the formation of professional competencies in the field of ICT among students of this specialty. The conducted research proves the need for changes in the working curricula of disciplines “Information systems and technologies”, “Practices of information and communication technologies”, “Statistics”, “Management and administration”, “Finance, money and credit”, “Accounting and audit”. “Business foreign language”, “Professional rhetoric”, “Foreign professional language”, “PR and advertising technologies”, “Business accounting”, “International business management”, “Electronic business information technologies”.
Methods for pattern detection based on colour and size features in video streams
Authors: Cuong The Nguyen , Syryamkin V I , Hoang Thuy Nguyen Trang 
Published: March 2021

Abstract
Detecting pattern in images plays a huge role in the field of computer vision. The article summarizes methods for detecting patterns by their properties, such as colours, shapes in images. And with video, the detection of patterns is also based on their movement. Human face recognition problem is also mentioned in the application of MTCNN network architecture and reconfiguring FaceNet to suit actual requirements. Test results are given and recommendations with data and program operating conditions are provided for the reference.
A facility for the research, development, and translation of advanced technologies for ion-beam therapies
Authors: Lis M. , Newhauser W. , Donetti M. , Durante M. , Weber U. , Zipfel B. , Hartmann-Sauter C. , Wolf M. , Graeff C. 
Published: March 2021

Abstract
This article describes the updated GSI radiotherapy research facility (Cave M) located at the GSI Helmholtz Center for Heavy Ion Research in Darmstadt, Germany. This facility was upgraded by modernizing the beamline that supported a pilot project in carbon ion cancer therapy in Europe from 1997 to 2008. Descriptions are provided of the modernized beamline, related hardware components and treatment delivery system. The performance specifications and general characteristics for each major component are described, along with example pre-clinical test results of selected components. These upgrades to Cave M allow for investigating novel therapy methods.

The radiotherapy research facility is located on a beamline of the heavy ion synchrotron (Schwer-Ionen-Synchrotron, or SIS-18) accelerator complex, capable of delivering 0.1 to 2 GeV/u charged particle beams, ranging from protons to uranium. This beamline contains components for fast beam gating, aborting, focusing, scanning, monitoring, and shifting the range of the beam. The beam scanning magnets, position detectors, and beam monitors are described, along with tests of functionality and performance. A dose delivery system (DDS) was adapted from a clinical unit at the National Centre for Oncological Hadrontherapy (CNAO), Pavia, Italy, and consists of modular real-time hardware and software. The DDS was modified to enable research on adaptively-managed patient motion through the use of libraries of 4D-optimized radiation treatment plans, an unsolved problem of importance for treating moving tumors. The system is modular and is designed to support future research studies, such as high dose rate (Flash) radiotherapy and radioactive ion beams.

A series of validation tests confirmed the functionality and performance of various key components and systems. For example, an end-to-end test revealed that dosimetric spatial homogeneity of over 95% was achieved for square treatment fields. More generally, all performance characteristics that were tested satisfied anticipated clinical requirements.
Direct measurements from shut-in and other abandoned wells in the Permian Basin of Texas indicate some wells are a major source of methane emissions and produced water
Authors: Townsend-Small Amy , Hoschouer Jacob 
Published: March 2021

Abstract
Oil and gas production wells are a major anthropogenic source of the greenhouse gas methane (CH4) in the United States. Oil and gas production rates from these wells fluctuate due to changes in demand, and is expected to decline over the coming decades to centuries due to the transition to renewable energy. The CH4 emissions profile from wells that are ‘shut-in’ to accommodate changes in demand has not been previously measured, and thus it is unclear whether reduced demand will actually result in reduced CH4 emissions from oil and gas production. Here we present the results of a measurement campaign of CH4 emissions from shut-in and other non-producing oil wells in the Permian Basin, Texas, the largest oil production basin on Earth. All the wells we measured were conventionally drilled oil wells, and we did not measure CH4 emissions from any shut-in unconventional wells. We found that, of 37 wells measured, two-thirds had an emission rate of less than 1 g CH4 hr−1, with the remaining seven wells ranging from 1.3 to 132.0 g CH4 hr−1. The average CH4 emission rate from all wells was 6.2 g CH4 hr−1, lower than previous measurements of CH4 emissions from active conventional wells in the Permian Basin (∼400 g CH4 hr−1) (Robertson et al (2020 Environ. Sci. Technol.
54 13926–34)). Some shut-in wells could be a substantial source of CH4 emissions if this category is not subject to leak detection and repair regulations. We also found five orphaned wells that were a source of produced water to the surface, sometimes in very large quantities (1000s of liters per minute), with evidence for emissions of CH4, hydrogen sulfide, brine, and possibly other hazardous chemicals such as oil residue. Future work should further characterize the impacts of shut-in and orphaned wells on greenhouse gas emissions, water quality and human health.
Determining of optimum operation modes of a diesel engine with a multi-component bio-fuel composition
Authors: Plotnikov S A , Kartashevich A N , Simonov M V , Glushkov M N 
Published: March 2021

Abstract
A problem of reduced number of tests was identified during the determining of optimal load and speed performance of a diesel engine with a multi-component bio-fuel composition. The planning method of the experiment for determining of effective ICE performance was improved. For factor space description, graph analyses were carried out using a semi-rotatable 2nd order Box-Behnken statistical design for three factors. The operation studies of a 4ChN 11,0/12,5 diesel engine were performed with the most stable multi-component bio-fuel composition, including the following ingredients, % wt.: RSO – 34.5; ethanol – 31.0; DF – 34.5. The analysis of regression models and 2D sections of response surfaces provided for determining of the optimum advance angle of fuel injection Θɞnp. = 23.5 deg. to TDC. By method of superposition of the 2D sections of the response surfaces of the effective efficiency ηe
and the specific effective fuel consumption ge
a search for a compromise solution on optimum combination of the levels of the factors to be studied. It was found out that the optimum area of the combination of factors is located in the range of the crankshaft rpm n = 1400…1550 min−1 of the diesel engine and in the effective load range Pe
= 0.68…0.85 MPa. Under recognition of the variable nature of the load and speed modes of a diesel engine in a real operation environment, the obtained data are of practical interest.
Development and study of ways to extend the multifuel capability of ICE
Authors: Plotnikov S A , Kartashevich A N , Kantor P Ya , Vtyurina M N 
Published: March 2021

AbstractIn the recent years, no considerable growth of use of alternative fuels by vehicle fleets has been observed, in spite of the availability of a vast volume of research data and recommendations. The identified reason is the reluctance of manufacturers to produce ICE modifications for operation with fuels different from DF. The problem could be solved by development and study of ways to extend the multifuel capability of ICE. Basic ways were identified to extend the limits of the usability of alternative fuels with different physical and chemical properties. Regressions were suggested allowing for determining the chemical nature of additives and their degree of influence on the decreasing of the kinematic viscosity of the fuel. A mathematical solution was obtained describing conditions of physical existence of a fuel emulsion. An analysis of a number of combustion inhibitors was carried out. A mechanism of inhibition of additives of new generation was analyzed. Subcaloric fuel combustion process (generator gas) was studied, ways to improve its efficiency were suggested. Based on the theoretical analysis and experimental data, generalized assessment criteria were formulated for the usability limits of non-conventional energy materials. The obtained results could help to essentially extend the fuel base of engines in real operation environments.
Electronic component base for controlling the engine, mechatronic transmission and adaptive brake force limitation system as part of the electronic platform of the Formula SAE class sports vehicle
Authors: Kulagin A , Khozerov V 
Published: March 2021

Abstract
The article presents a description of the research and development work carried out by NSTU employees as part of their participation in the international project Formula Student. The paper deals with the process of creating an electronic platform for a sports car of the Formula SAE class, which includes electronic control units for the engine, mechatronic transmission and brake system, united into a common data bus. The process of selection and adaptation of the engine control unit based on the required parameters, the prototyping process of mechatronic transmission systems is described, the concept of the development of the brake control unit is reflected
Evolution of requirements to state of order of automotive tires for traffic safety
Authors: Yerasov I A , Proshin D N , Glazunov D V 
Published: March 2021

Abstract
The paper presents the results of a study of the influence of the amendment of the requirements to the technical state of order of motor vehicles, specifically, to the design of the tires used on the front and rear axles of motor vehicles on the motor traffic safety. It has been determined that newly developed requirements aim on the reduction of the difference of the traction between the front and the rear axle for more prompt response of the braking mechanisms and improved braking efficiency. It has been demonstrated that the implementation of the design requirements to vehicles developed in 2010 an 2013 allows for reduction of the accident rates of motor vehicles using different tire types by 3%. Further tightening of the operational requirements to motor vehicles in this direction has a reserve allowing for max. 1% of further reduction of the accident rate whereafter the reserve of the traffic safety improvement will be deemed exhausted.
Experimental and calculation method for determining the parameters of a car suspension with an elastic elastomeric element
Authors: Stepanov E V , Maleev S I , Musarsky R A , Ogorodnov S M 
Published: March 2021

Abstract
We present a suspension design the elastic elements of which are made of elastomers. This allows us to reduce the weight of unsprung parts of the vehicle significantly, which affects the quality of ride in a positive way. The aim of the study is to determine the elastic characteristic, the damping coefficient, the natural oscillation frequency of the sprung masses and the specific dynamic energy intensity of the suspension with elastomeric elastic elements. The determination of these parameters is carried out on the basis of experimental data got as a results of static and dynamic loading of a package of elastomeric elements. The elastic characteristic of the elastomeric element is obtained by static reduction and is not linear. Stiffness estimation of an elastomeric element for a specific point of characteristic or for a limited area is suggested. Also, there are significant friction losses during deformation, it is quite difficult to take them into account as a separate parameter when evaluating the elastomer damping properties. It is recommended to estimate their absorption capacity using a “conditional” damping coefficient. Its value is determined by the nature of the damped oscillations process under dynamic loading of an elastomeric elements package implemented on a special pendulum copra. The method of reducing the elastic characteristic and the damping coefficient of the elastomer to the “wheel” using graphoanalytic techniques is described in detail. The values of natural oscillation frequency and the energy intensity of the suspension with elastomeric elastic element are calculated based on the values of the suspension static and dynamic deflections and the forces in the tire contact with the supporting surface. Relying on experience in analyzing the standard car suspension parameters, it is concluded that using elastomeric elastic elements in the suspension design of trucks, buses and all-terrain vehicles is advisable.
Formation of performance characteristics of a Formula SAE sports vehicle based on calculations and simulations of systemic elements
Authors: Kulagin A , Goncharov K , Kuzmichev V , Golubev M , Gulin M , Khozerov V 
Published: March 2021

Abstract
The article presents a description of the research and development carried out by NNSTU employees as part of their participation in the international project Formula Student. The paper includes the calculated assessment of the operational properties of the vehicle being designed: the calculation of the center of mass coordinates, with the presentation of data based on the configuration features of the vehicle, the calculations of stability, the efficiency of the brake system, the input parameters of the steering simulation are given, on the basis of which the graphical dependences of the angles were obtained steering wheel rotation, as well as data on prototyping mechatronic transmission systems. The data obtained is compared with the technical regulations requirements of the international student competitions «Formula SAE».
FEM design of proportional solenoid for hydraulic proportional suspension damper
Authors: Cheng Chin Yi , Renn Jyh Chyang , Xie Yi Zhe , Huang Yi Kai , Yang Chun Bin 
Published: March 2021

Abstract
In this paper, the FEM simulation package FLUX2D is utilized as a tool to design a proportional solenoid for the hydraulic proportional suspension damper. The hydraulic proportional suspension damper can be used in vehicle semi-active suspension system due to its adjustable output damping force. In addition, the proportional solenoid plays the most significant role to achieve such a variable output damping force. From previous literatures, three different structures of proportional solenoid will be discussed in this paper. The first one utilizes the stepped conical armature design. Its advantages include low cost, easy manufacturing. However, the limited available linear stroke as well as the poor linearity are its major faults. The second structure uses a special tube consisting of three metal rings that are welded together. Between two magnetic steel rings, there is a non-magnetic copper ring serving to guide the magnetic flux and to produce a linear force/stroke relation. Clearly, higher cost and complex manufacturing process are its major disadvantages. However, larger available linear stroke and good linearity are two promising advantages. In this paper, the third design of proportional solenoid is adopted. The construction of the proportional solenoid is divided into several parts. After assembling these parts together, a ring of air gap with a well-designed geometrical shape exists which can be used to replace the non-magnetic copper ring. Without the copper ring, the expensive and complex welding process can be omitted. Meanwhile, the large available linear stroke as well as good linearity are both preserved. Finally, an experimental test device for measuring the force/stroke relation of proportional solenoid is implemented in this study. It is observed that the simulation results agree quite well with the experimental results.