bluuebunny/crossref_metadata_2025_split huggingface dataset:
Increasing wear and corrosion resistance of steel products by combined laser thermomechanical treatment
Authors: Danyleiko Oleksandr , Dzhemelinskyi Vitaliy , Lesyk Dmytro 
Published: December 2021

A technique is presented for hardening metal products, in particular, the main tools (hammers) and cases of core drilling bits made of steel 30HGSA, using thermomechanical surface treatment according to a separate scheme. The method of combined laser thermomechanical hardening used in the study consists in the use of shot peening followed by laser heat treatment. Its use makes it possible to increase the operational properties of steel products, in particular, their wear and corrosion resistance. Based on the results of theoretical and experimental studies, the paper substantiates the features of dynamic surface plastic deformation for the analysis of impact during shot peening. The advantages of using laser hardening without surface melting are presented. Experimental research methods are proposed for determining the structural-phase composition, structure of the surface layer, hardness and microhardness of the hardened zones of steel 30HGSA. The range of rational modes of impact shot peening and thermal laser treatment has been determined. A device for testing samples for wear resistance has been developed. Methods of testing for wear and corrosion resistance of the surface of samples are proposed for assessing the tribological properties and contact interaction of materials under quasi-static and dynamic loading conditions. It is concluded that rational technological modes of hardening tools made of steel 30HGSA using combined laser thermomechanical treatment allow increasing the depth of the hardened layer by ~1.5 times compared to laser heat treatment. In addition, they provide the microhardness of the surface layer of ~5400 MPa, which is ~2.5 times higher than the microhardness of the base material
Devising the technology for localizing environmental pollution during fires at spontaneous landfills and testing it in the laboratory
Authors: Bondarenko Ivan , Dudar Igor , Yavorovska Olha , Ziuz Olha , Boichenko Sergii , Kuberskyi Ihor , Shkilniuk Iryna , Komarysta Bohdana , Dzhygyrey Iryna , Bendiuh Vladyslav 
Published: December 2021

This paper reports an analysis of current issues related to storing solid household waste, and, specifically, the problem of environmental pollution when unsorted solid household waste (SHW) is ignited. A technology has been developed to improve environmental safety and ensure a reduction in the anthropogenic load on the atmosphere, hydrosphere, and lithosphere in the event of fires at the sites of solid waste storage. The operation of the proposed equipment, taking into consideration all the provided operating modes and additional options, is energy-saving and automated (or semi-automatic), which makes it especially relevant under modern conditions. The technology significantly improves the efficiency of the processes to eliminate the ignition of SHW and localize their environmental consequences for the territories adjacent to landfills.
Laboratory tests were carried out, which proved the effectiveness of practical application for the designed equipment of a new environmentally active adsorption mixture for the purpose of cleaning the waste filtrate, as well as its use for the formation of an anti-filtration screen in the mound of SHW. Experiments have shown that the tested sample of the aqueous suspension of the proposed environmentally active mixture adsorbs calcium (by 92 %), overall iron (by 91 %), overall phosphorus (by 75 %), zinc (by 31 %), and ammonium (by 19 %). This leads to a decrease in the overall toxicity of the solution and indicates the possibility of improving the environmental safety of waste fires when operating the proposed technical solution by purifying the filtrate released during fires in landfills.
The reported results, specifically, the technology for localizing the environmental consequences of uncontrolled waste ignition could be used in the process of modernizing the technical support for sanitary treatment schemes in urban areas.
Development of an estimation-experimental method for estimating the preservation indicators of single-use articles
Authors: Lanetskii Boris , Lukianchuk Vadym , Koval Igor , Khudov Hennadii , Hordiienko Andrii , Zvieriev Oleksii , Shknai Oleh , Kozlov Vadym , Bieliaiev Danylo , Grechka Alexandr 
Published: December 2021

To manage the operation of modern single-use products, it is necessary to evaluate their preservation indicators as uncontrolled, non-repairable, and maintenance-free objects. Data for assessing its parameters are considered as one-time censored samples with continuous monitoring, which does not correspond to the mode of storage of products during operation. Under the conditions of limited volumes of censored samples, it is problematic to identify the parametric model of persistence.
To solve this problem, a non-parametric estimation-experimental method has been devised, which is a set of models for data generation, estimation of the function of the distribution of the preservation period and preservation indicators.
The data generation model is represented by a scheme of operational tests and analytical relationships between the quantities of tested and failed articles. The model of estimating the distribution function describes the process of its construction on the generated data. Models for estimating preservation indicators are represented by ratios for their point and interval estimates, as functionals from the restored distribution function. Unlike the well-known ones, the developed method implements the assessment of indicators under the conditions of combined censorship.
The method can be used to assess the preservation indicators of single-use articles with an error of at least 7 %. At the same time, their lower confidence limits are estimated at 0.9 with an error not worse than 14 % with a censorship degree of not more than 0.23. The restored distribution function agrees well (reliability 0.9, error 0.1) with the actual persistence of articles with censorship degrees of not more than 0.73, which is acceptable for solving the problems of managing their operation.
Constructing a model for the dynamic evaluation of vulnerability in software based on public sources
Authors: Tatarinova Yuliia , Sinelnikova Olga 
Published: December 2021

One of the key processes in software development and information security management is the evaluation of vulnerability risks. Analysis and evaluation of vulnerabilities are considered a resource-intensive process that requires high qualifications and a lot of technical information. The main opportunities and drawbacks of existing systems for evaluation of vulnerability risks in software, which include the lack of consideration of the impact of trends and the degree of popularity of vulnerability on the final evaluation, were analyzed.
During the study, the following information was analyzed in the structured form: the vector of the general system of vulnerability evaluation, the threat type, the attack vector, the existence of the original code with patches, exploitation programs, and trends. The obtained result made it possible to determine the main independent characteristics, the existence of a correlation between the parameters, the order, and schemes of the relationships between the basic magnitudes that affect the final value of evaluation of vulnerability impact on a system.
A dataset with formalized characteristics, as well as expert evaluation for further construction of a mathematical model, was generated. Analysis of various approaches and methods for machine learning for construction of a target model of dynamic risk evaluation was carried out: neuro-fuzzy logic, regression analysis algorithms, neuro-network modeling.
A mathematical model of dynamic evaluation of vulnerability risk in software, based on the dynamics of spreading information about a vulnerability in open sources and a multidimensional model with an accuracy of 88.9 %, was developed. Using the obtained model makes it possible to reduce the analysis time from several hours to several minutes and to make a more effective decision regarding the establishment of the order of patch prioritization, to unify the actions of experts, to reduce the cost of managing information security risks
Improvement of test methods and criteria for evaluation of resistance to flame propagation of long elements of the wiring system
Authors: Kravchenko Rostyslav , Illiuchenko Pavlo , Onyshchuk Andrii , Zazymko Oleksandr 
Published: December 2021

The test methods for flame propagation of long elements of the electrical wiring system, in particular, cables, cable conduits and ducts, are analyzed, and differences in them are found in the test conditions and criteria for evaluating the resistance to flame propagation.
Using a substrate of a wooden board covered with a layer of tissue paper with an areal density of (21±9) g/m2, adopted for testing other elements of the electrical wiring system, a cable was identified that is not resistant to flame propagation. It is proposed to use this substrate for testing the flame propagation of cables instead of a substrate made of a double layer of filter paper with a surface density of (80±15) g/m2.
In one of three experiments, a cable that was not resistant to flame propagation was found based on the criterion of the presence of ignition of the substrate located under it. To reduce the risk of making an incorrect decision on compliance, it is proposed that the assessment of long elements of the wiring system be carried out according to the rules established for cable ducts, trays and ladders in EN 50085-1 and IEC 61537.
For the AVVG cable with an outer diameter of 10 mm to 60 mm, when it touches the blue flame cone of 1 kW, the correlation coefficient of the dependence of the length of the charred part on the diameter was 0.969. For a distance of 100 mm between the sample and the burner along its axis, a correlation coefficient of 0.985 was obtained. It is proposed to test cables under the second condition recommended in IEC 60695-11-2.
For two conduits, flame propagation was revealed when exposed to a 1 kW flame for 120 s and 240 s. However, for these pipelines, flame propagation did not occur under standard conditions of exposure to such a flame for 20 s and 25 s. To identify long elements of the wiring system that are not resistant to flame propagation, it is proposed to test them at a duration of exposure to a flame of 1 kW, established for cables in IEC 60332-1-2
The development of the system for arc nordugrid based grid-computing organization using virtual environments of the docker platform
Authors: Prila Olga , Kazymyr Volodymyr , Bazylevych Volodymyr , Sysa Oleksandr 
Published: December 2021

The study of modern frameworks and means of using virtualization in a grid environment confirmed the relevance of the task of automated configuration of the environment for performing tasks in a grid environment.
Setting up a task execution environment using virtualization requires the implementation of appropriate algorithms for scheduling tasks and distributed storage of images of virtual environments in a grid environment. Existing cloud infrastructure solutions to optimize the process of deploying virtual machines on computing resources do not have integration with the Arc Nordugrid middleware, which is widely used in grid infrastructures. An urgent task is to develop tools for scheduling tasks and placing images of virtual machines on the resources of the grid environment, taking into account the use of virtualization tools.
The results of the implementation of services of the framework are presented that allow to design and perform computational tasks in a grid environment based on ARC Nordugrid using the virtual environment of the Docker platform. The presented results of the implementation of services for scheduling tasks in a grid environment using a virtual computing environment are based on the use of a scheduling algorithm based on the dynamic programming method.
Evaluations of the effectiveness of the solutions developed on the basis of a complex of simulation models showed that the use of the proposed algorithm for scheduling and replicating virtual images in a grid environment can reduce the execution time of a computational task by 88 %. Such estimates need further refinement; it is predicted that planning efficiency will increase over time with an increase in the number of running tasks due to the redistribution of the storage of virtual images
Identification of benzydamine and its metabolit in the presence of certain anti-inflammatory non-steroidal drugs
Authors: Chorna Olga , Chornyi Vasyl , Сhubenko Oleksandr , Hrubnyk Ihor , Mishchenko Volodymyr , Golik Mykola 
Published: December 2021

The aim of the work. Currently, a large number of cases of non-medical use of benzydamine hydrochloride have been described. The identification of benzydamine and its metabolite, benzydamine N-oxide, in the presence of some non-steroidal anti-inflammatory drugs, has been insufficiently studied. Therefore, the development of a method for its identification in biological material is an urgent task.
Materials and methods. The subjects of the study were benzydamine hydrochloride and its metabolite, as well as some non-steroidal anti-inflammatory drugs, which are its analogues in terms of pharmacological action. The studies were carried out by methods of thin layer chromatography and high-performance liquid chromatography.
Results. At the first stage a screening method for benzydamine identification was studied using the extraction in acidic and basic conditions. It was shown that benzydamine can be isolated in both medias with subsequent development with a solution of iodoplatinate and Dragendorff's reagent according to Munier or with Mandelin reagent respectively. The mobile phase was selected and respective hRf for the target molecule were defined.
After a preliminary identification of benzydamine a reference method for the final confirmation of the drug that had led to poisoning was proposed. A robust, specific and accurate reversed phase HPLC method was chosen. It was shown that benzydamine exists in biological material mainly in a form of metabolite – benzydamine N-oxide. The selected method was able to separate and determine key analytes in biological samples after a preparative isolation by TLC method. The comparison with UV spectra of the reference standard of benzydamine hydrochloride was proposed to avoid false positive conclusion of drug identification.
Conclusions. Proposed methodology can be applied for routine identification of benzydamine poisoning in toxicological laboratories
The use of online technologies in the process of training future music teachers
Authors: Varnavska Larisa , Viktorova Margarita , Rymar Liliana 
Published: December 2021

Modern graduates of higher educational institutions should be able to independently process information and be ready to acquire and use knowledge throughout their professional life. The actual task of education in the conditions that have formed in the world is the development of new educational technologies, which are added almost every year. The virtual world is becoming more and more diverse. The use of digital platforms is a pressing issue at a time when almost all information and activities are moving into the virtual world.
The article substantiates the use of digital platforms Zoom and Padlet, which are new in teaching technology. The issues of implementation of educational technologies in the process of training future teachers of musical art are considered. The capabilities of the web interface, which is the Padlet interactive whiteboard, which makes it quite popular in the education system, are analyzed. Using the capabilities of a virtual online whiteboard refers to new educational technologies. In-depth capabilities of work on the Zoom platform are shown. It has been shown, that the use of a multifunctional service affects the development of communicative and organizational skills of students. The process of connecting digital platforms Zoom and Padlet with music computer technologies is shown with specific examples. The organizational issues of conducting a practical lesson on arranging musical works using digital platforms are considered. The stages of preparation for arrangement are presented. An algorithm for creating a phonogram of a school song using Zoom and Padlet technologies, individual work and work in groups, which is one of the main issues of modern education, is shown. At the same time, the development of an integrated approach to the organization of effective educational activities in the conditions of an information and educational environment is relevant at the present time
«Individual curriculum» as a way of planning by students of vocational and technical education of their employment
Authors: Korol Sergii , Zinchenko Anna , Hlushchenko Karina 
Published: December 2021

The article deals with the problem of student’s employment in the specialty of graduation at vocational education institutions. Considering the plans of some students on relearning or developing new skills in courses or internships, they need awareness of right specialty to choose and job preferably to find after graduation. The paper considers the relevant issue of research and development of individual planning methods for vocational education students in terms of their employment. The emphasis is made on this factor impact for future employment, namely its impact on the individual professional orientation and career, which can be planned through an individual curriculum i.e. balanced life planning.
An individual curriculum is a set of activities that help taking responsibility for the future by combining educational activities at school, college, work and in general throughout the career. It determines the sequence, form and pace of mastering the educational program components, own experience and other successful experiences, methods and activities necessary for achievement of the main planning goal. An individual plan is important as planning efficiently turns knowledge into skills.
The study considered based upon the "Individual curriculum" method and auxiliary test methods: "Success motivation and failure fear (questionnaire by Rean A.O.)", a test to determine the motive for a profession choice – the method of professional self-determination by J. Holland.
The research was implemented on the basis of the Sumy Chemical-Technological Center for Vocational Education, consisting of two stages of online testing with further explanation to students and their individual curricula development.
The first research stage involved students’ participation in an online quest, tests performance and obtaining explanations based on the methods of comprehensive interpretation.
The second research stage involved the method of "individual curriculum planning" based on a plan template according to the study year.
Potential GDP and its factors assessment
Authors: Kvasha Tetiana 
Published: December 2021

The object of the study is the reserves of economic growth in the country on the example of Ukraine. One of the problems of such studies is the calculation of potential GDP, which is not observed, but is calculated on the basis of various methods. Also problematic is the choice of method/methods of calculating potential GDP and potential values of its factors. Any estimate of the potential value of a variable is based on one or more statistical relationships and therefore contains an element of uncertainty. In order to reduce uncertainty, 2 methods were used to determine the potential values of the components of GDP – the growth rate of employment, fixed capital and TFP (total factor productivity).
The study used the methods of one-dimensional statistical filters Hodrick-Prescott and Baxter-King to estimate the potential values of GDP and the model of the production function to calculate potential GDP based on the potential values of its factors. The main reasons for the slowdown in Ukraine's GDP have been identified, the main of which is low capital productivity due to budget constraints. The second place in this ranking was taken by labor productivity, the last third – by TFP. Weak productivity and investment growth reinforced each other. Capital has the highest growth potential in Ukraine. Therefore, measures to stimulate capital investment, including in research and innovation and human capital, are important. Other factors that affect GDP through labor productivity and TFP are population aging, emigration, and tight lending conditions. To neutralize these factors, it is necessary to create new jobs, facilitate the conditions for obtaining loans by enterprises, stimulate advanced training and lifelong learning. The proposed approach to the separate calculation of potential values of GDP factors and their analysis find reserves for GDP growth. This provides the advantages of this method over other approaches.
METODOLOGIA DO ENSINO DA DANÇA: trânsito entre vida e arte
Authors: PEREIRA ARLIENE STEPHANIE MENEZES 
Published: December 2021

O curso de extensão do Instituto Federal de Educação Ciência e Tecnologia do Ceará-campus Morada Nova, agrega conhecimentos sobre práticas educativas em dança. O mesmo possui uma carga horária de 40 horas e é o primeiro curso na área de Artes e Educação Física ofertado pelo campus. Na turma estão matriculados 36 alunos, de várias cidades do vale do Jaguaribe, entre elas: Morada Nova, Limoeiro do Norte, Jaguaretama, Jaguaruana, Russas e Tabuleiro do Norte. Entre os alunos estão discentes e docentes de Educação Física, artistas, dançarinos, professores de dança e profissionais diversos da área de humanas que trabalham com a temática da dança. O curso utilizou de metodologia de aulas práticas e expositivas, e englobou conteúdos do histórico da dança, estilos de dança, planos de aula, programas, projetos e editais, composição coreográfica, atuação profissional e educativa em dança, além de apresentações artísticas. Um dos objetivos do curso que é fomentar o tripé ensino-pesquisa-extensão. Os discentes discorrem sobre a trajetória do curso como uma primeira oportunidade de se capacitarem e de apropriarem-se de conhecimentos teóricos e práticos, bem como da importância que o campus Morada Nova deu para eles e para a área, e esperam que as faculdades e universidades deem mais chances como essa para os profissionais da área.
Restrictions on Congregational Prayers and Negotiations on Religious Freedom during Pandemic in Indonesia
Authors: M. Dja'far Alamsyah 
Published: December 2021

This article discusses the policy of restricting religious rights or beliefs during the pandemic time in Indonesia. Most studies presume that restriction policy is in line with the principles and rights of religious freedom. These studies have not much directed towards answering how the restriction on the worship right, such as congregational prayers, able to accommodate and negotiate various rejections and neglects by some Islamic communities. This paper comes with the idea that policies to restrict congregational prayers should not be uniform but provide several alternative approaches. This approach needs support from central and local authorities negotiating abilities. The main research data came from the policy documents of the central government and provincial government. Secondary data came from media coverage and relevant literature. This study found that restrictions in the early days of the pandemic applied uniformly in the form of the absence of congregational prayers during the lockdown period. The policy does not provide alternatives such as still allowing it by establishing health protocols.