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2-х координатна лінійка для супорта токарного станка
(Хмельницький національний університет, 2021) Корольков, Владислав Олександрович
Метою роботи є аналіз технічних засобів та порівняння підходів до побудови та функціонування електронних лінійок. Для досягнення поставленої мети у роботі сформульовані і вирішені наступні задачі 1 Розглянуті порівняльні підходи до побудови і функціонування 2-х координатних електронних ,магнітних та ег. лінійок. 2 Розглянуті варіанти переходу від старих до новіших моделей приладів електронного вимірювання. 3 Проведено аналіз технічних засобів використовуваних при обладнанні електронною лінійкою різні види станків та інших об’єктів 4 Розглянута архітектура схеми та принципи її побудови при вимірюванні проектів лінійкою. 5 Описані основні схеми вимірювання приладом . 6 Наведена схема переходу від найперших ,звичайних лінійок до надсучасних ,високоточних приладів електронного вимірювання.
3D printing in the manufacture of sewing products
(Хмельницький національний університет, 2021-10) Polishchuk, Andrii; Skyba, Mikola; Polishchuk, Oleh; Mytsa, Viktoriia
Growing consumer competence and skills developed in the garment industry in graphics programs can not only simplify and expand the production of clothing created using three-dimensional technology and 3D printing but also form a new aesthetic of the future society. With the use of 3D printing in the manufacture of garments, you can develop accurate and perfect models, reduce production time, and reduce production costs.
3D quasi-monomials
(Київський національний університет імені Тараса Шевченка, 2023-12-27) Самарук, Наталія Миколаївна
3D-конструктор дитячих майданчиків. База 3D-моделей дитячих майданчиків
(Хмельницький національний університет, 2022) Шмунь, В’ячеслав Олегович
Метою роботи є проектування та розроблення бази 3D-моделей дитячих майданчиків. Об’єктом дослідження є процес 3D-конструювання дитячих майданчиків. Предметом дослідження є база 3D-моделей дитячих майданчиків. Практичне значення має проведений комплекс розрахунків для визначення витрат, доходів та собівартості бази 3D моделей дитячих майданчиків, а також розроблення бази 3D моделей дитячих майданчиків.
3D-конструктор дитячих майданчиків. Програмно-технічні засоби 3D-конструювання дитячих майданчиків
(Хмельницький національний університет, 2022) Андрєєв, Олексій Андрійович
Метою роботи є проектування та розроблення програмно-технічних засобів 3D-конструювання дитячих майданчиків. Об’єктом дослідження є процес 3D-конструювання дитячих майданчиків. Предметом дослідження є програмно-технічні засоби 3D-конструювання дитячих майданчиків. Практичне значення має проведений комплекс розрахунків для визначення витрат, доходів та собівартості програмно-технічних засобів 3D-конструювання дитячих майданчиків, а також розроблені програмно-технічні засоби 3D-конструювання дитячих майданчиків.
3D-моделювання редукторів автокранів з використанням методу скінченних елементів
(Харківський національний автомобільно-дорожній університет, 2020) Рудик, Олександр Юхимович; Трасковецька, Лілія Михаййлівна; Максимчук, Олександр Васильович
За допомогою SolidWorks проведений перевірний розрахунок ведучої шестерні циліндричного косозубого редуктора
A brief overview of the Chinese education system
(Khmelnytskyi National University, 2021) Bidyuk, N.; Sova, M.
The article offers a brief overview of the structure and main areas of development in the Chinese education system. The transition period in China’s education system can be characterized by the following slogan: “On the way to modernization, world and future”. Indeed, systemic reforms pave the way in which the state’s policy is playing a guiding role and schools and universities a leading role in the gradual search for special Chinese ways of education development. The focus of the article is mainly on the types of education in China and the conditions for obtaining education (preschool, primary, secondary, upper secondary and postgraduate education). Besides, it is crucial to consider the structure of vocational education, which is implemented in the following types: primary, secondary, higher vocational education and vocational training. Moreover, the article describes the features and forms of education for children with special needs as an important part of general education. Emphasis is placed on the level and conditions of higher and postgraduate education in China (bachelor’s, master’s, doctoral degrees). It must be noted that the article highlights several specialized projects and comprehensive plans in the field of education aimed at reforming and improving the status of education, including “Project No 211” and “Project No 985”. It also outlines the main milestones of “The Implementation Plan” and “The Plan until the Year of 2035”, as well as the measures taken to realize many other goals despite the COVID-19 pandemic. Particular attention is paid to the support provided by the Chinese government to the education system during the COVID-19 pandemic. It has affected all its levels to not allow the educational process to become radically different and manage to strengthen in the global crisis. Finally, the article addresses several controversial issues in China’s education sector, including reforming the system of education quality assessment and reformatting private education.
A comparative analysis of professional training of future physical culture teachers in leading European countries
(Хмельницький національний університет, 2019) Khimich, Vita; Homoniuk, Olena; Rudnichenko, Mykola
The article deals with analysis of undergraduate courses for professional training of future physical culture teachers in Poland, Germany, France, and Ukraine. These countries set a number of requirements to higher educational establishments that have professionally oriented programmes for such specialists and are almost similar in majority of the countries. It has been revealed that the content of studies is oriented on current demands of the labor market and personal needs of future physical culture teachers. Forms of organization of undergraduate courses for future physical culture teachers (lectures, seminars, practical classes, individual and group projects, individual work) have been analyzed. Undergraduate courses in Poland have been analyzed. They are oriented on search of new educational training programs that would correspond to changes on national, regional, and global educational services markets and labor markets. It has been revealed that educational system in Poland includes state and private educational establishments. The research showed that the system of higher education in Poland is regulated by state legislative acts. It has been revealed that all higher educational establishments in Germany are divided into the following groups: universities, higher vocational schools giving specialized vocational training, higher educational schools (colleges) of arts and music. The research showed that each of federal lands has certain autonomy and can independently regulate educational policy and term of educational reforms implementation. It has been revealed that demands are made to teachers, namely to professional competence, knowledge, professional ability, preparedness, and skills needed for teachers to be able to solve certain educational problems. Studies consist of compulsory and elective modules. French system of education that has vivid national specifics has been analyzed in the article. It has been revealed that France has its own system of diplomas and academic degrees. It has been described that in France, university training of specialists in physical education and sport focuses on combination of fundamental theoretical education and professional practice. The author tackles present-day requirements to professional activity of teachers and professional training of future physical culture teachers in Ukraine. The structure of higher education in Ukraine has been built based on the structure of education on developed countries approved by UNESCO, UN and other international organizations.
A comparative analysis of professional training of future physical culture teachers in leading European countries
(2019) Khimich, Vita; Homoniuk, Olena; Rudnichenko, Mykola
The article deals with analysis of undergraduate courses for professional training of future physical culture teachers in Poland, Germany, France, and Ukraine. These countries set a number of requirements to higher educational establishments that have professionally oriented programmes for such specialists and are almost similar in majority of the countries. It has been revealed that the content of studies is oriented on current demands of the labor market and personal needs of future physical culture teachers. Forms of organization of undergraduate courses for future physical culture teachers (lectures, seminars, practical classes, individual and group projects, individual work) have been analyzed. Undergraduate courses in Poland have been analyzed. They are oriented on search of new educational training programs that would correspond to changes on national, regional, and global educational services markets and labor markets. It has been revealed that educational system in Poland includes state and private educational establishments. The research showed that the system of higher education in Poland is regulated by state legislative acts. It has been revealed that all higher educational establishments in Germany are divided into the following groups: universities, higher vocational schools giving specialized vocational training, higher educational schools (colleges) of arts and music. The research showed that each of federal lands has certain autonomy and can independently regulate educational policy and term of educational reforms implementation. It has been revealed that demands are made to teachers, namely to professional competence, knowledge, professional ability, preparedness, and skills needed for teachers to be able to solve certain educational problems. Studies consist of compulsory and elective modules. French system of education that has vivid national specifics has been analyzed in the article. It has been revealed that France has its own system of diplomas and academic degrees. It has been described that in France, university training of specialists in physical education and sport focuses on combination of fundamental theoretical education and professional practice. The author tackles present-day requirements to professional activity of teachers and professional training of future physical culture teachers in Ukraine. The structure of higher education in Ukraine has been built based on the structure of education on developed countries approved by UNESCO, UN and other international organizations.
A comparison of phase reflectometry methods for location fault in telecommunication cables
(Khmelnytskyi National University, 2017) Horiaschenko, K.L.; Zemlanskiy, O.E.; Горященко, К.Л.; Землянський, О.Е.
Aging wiring in buildings, transportation systems, consumer products and industrial machinery is among the most significant potential causes of catastrophic failure and maintenance cost in these structures. Smart wire monitoring can therefore have a substantial impact on the overall health monitoring of the system. Well known reflectometry is commonly used for locating faults on wires and cables for a long time. This paper compares Time domain reflectometry (TDR), frequency domain reflectometry (FDR), mixed signal reflectometry (MSR), sequence time domain retlectometry (STDR), spread spectrum time domain reflectometry (SSTDR) in terms of their accuracy, convenience, cost, size, and ease of use. Advantages and limitations of each method are outlined and evaluated for cables. The results in this paper can be extrapolated to other types of wire and cable systems
A comparison of reflectometry methods for location fault in telecommunication cables
(Хмельницький національний університет, 2017) Horiaschenko, K.L.; Zemlanskiy, O.E.; Горященко, К.Л.; Землянський, О.Е.
Aging wiring in buildings, transportation systems, consumer products and industrial machinery is among the most significant potential causes of catastrophic failure and maintenance cost in these structures. Smart wire monitoring can therefore have a substantial impact on the overall health monitoring of the system. Well known reflectometry is commonly used for locating faults on wires and cables for a long time. This paper discuss and compares several types of reflectometry methods as time domain reflectometry (TDR), frequency domain reflectometry (FDR), mixed signal reflectometry (MSR), sequence time domain retlectometry (STDR), spread spectrum time domain reflectometry (SSTDR) in terms of their accuracy, convenience, cost, size, and ease of use. Common problems of TDR are the inability to see small reflections and errors in the velocity of propagation are sources of errors. Other sources of errors in TDR are hardware errors – classical measurement error, where some variation in measurements is seen, even without making any changes to the wire under test, its connection. TDR is a most hardest in hardware realization because required highquality generator with precise stability of width and amplitude of pulses. FDR require lowfrequency generator with sinusoidal waveform, but require large memory area to store data from measuring process. All existing FDR methods do not allow eliminating "blind spots" at all. As a result, advantages and limitations of each method are outlined and evaluated for cables. The results in this paper can be extrapolated to other types of wire and cable systems.
A criterion of aggregating expert estimations into consensus pairwise comparison matrix by a given comparison scale within the corresponding space of positive inverse-symmetric matrices
(Хмельницький національний університет, 2016) Romanuke, V.V.; Романюк, В.В.
An approach of aggregating expert estimations into consensus pairwise comparison matrix is suggested. The aggregation criterion is minimization of the weighted distance between the consensus pairwise comparison matrix and pairwise comparison matrices of experts. The matrix distance is Euclidean-based metric in the space of all positive inversesymmetric matrices whose subset is the space of all pairwise comparison matrices. The consensus is found slightly simpler for experts with identical competences. Expert estimations are treated consistent if they do not differ badly. For checking consistency or concordance of expert estimations, two inequalities are controlled. The first inequality addresses maximal distance among weighted pairwise comparison matrices of experts. The second one addresses maximal difference among entries of these matrices. For experts with identical competences, the two inequalities are stated simpler, without weighting. The suggested approach is applicable, regardless the comparison scale, for solving hierarchical multicriteria problems by finite number of alternatives.
A flat contact problem the interaction two prestressed stripes with an infinite stringer
(Khmelnytskyi National University, 2019) Dikhtyaruk, N.N.; Poplavskaya, E.A.
The article is devoted to the research of problems of contact interaction of infinite elastic stringer with two identical clamped along one edge of pre-stressed strips. In general, the research was carried out for the theory of great initial and different variants of the theory of small initial deformations within the framework of linearized theory of elasticity with the elastic potential having arbitrary structure. The integral integer-differential equations are obtained using the integral Fourier transform. Their solution is represented in the form of quasiregular infinite systems of algebraic equations. In the article alsaw was investigated the influence of the initial (residual) stresses in strips on the law of distribution of contact stresses along the line of contact with an infinite stringer. The system is solved in a closed forms using transformation of Fourier. Expressions of stresses are represented by Fourier integrals with a simple enough structure. Influence of initial stress on the distribution of contact stresses is study and discovered the mechanical effects under the influence of concentrated loads.
A flipped learning approach in teaching English as a major discipline
(2019) Мартинюк, Олена Володимирівна; Martynyuk, O.
The paper deals with the flipped learning approach according to which the usual process of in-class learning is inverted. Hence, students study the material before attending classes and at classes they try to get deeper understanding of the topics by discussing them with their groupmates and performing problem-solving activities that are encouraged and monitored by teachers. After classes, students are involved in the reflection upon the feedback they were provided in order to use it extending their learning. Flipped learning can be rather efficient in foreign language learning due to its focus on target language use in classroom while students are working on interactive activities.
A forecast model of energy security level in the system of managing energy efficiency at enterprises
(2020) Voynarenko, M.; Mykoliuk, O.; Bobrovnyk, V.; Greguš, M.; Svistunov, O.
Abstract .he paper emphasizes the importance of managing an energy-efficient development of enterprises by designing a forecast model of energy security level in the system of enterprise management. The paper aims to forecast likely scenarios for enhancing energy security, identify major priorities and discover new ways to ensure energy efficiency at enterprises. The paper employs the following research methods: synthesis and analysis – to identify the essence and value of scenario modelling; theoretical generalization – to determine the main components of energy security at enterprises; classification – to study the impact of each component of energy security at enterprises on the choice of optimal scenario development; logical generalization – to justify the relevance, aim and objectives of the research; the method of rising from the abstract to the concrete – to develop and substantiate forecast trends in the changes of energy security level. Results: weight coefficients of energy security components based on scenarios have been formed; an algorithm for forecasting energy security level at enterprises based on scenarios has been built; forecast trends in the changes of energy security level have been determined; forecast trend models of energy security level at enterprises based on the proposed scenarios have been designed.
A framework for exploring and modeling neural architecture search methods
(CEUR-WS, 2020-05-14) Radiuk, Pavlo; Hrypynska, Nadiia
For the past years, many researchers and engineers have been developing and optimising deep neural networks (DNN). The process of neural architecture design and tuning its hyperparameters remains monotonous, timeconsuming, and do not always ensure optimal results. In his regard, the automatic design of machine learning (AutoML) has been widely utilised, and neural architecture search (NAS) has been actively developing in recent years. Despite meaningful advances in the field of NAS, a unified, systematic approach to explore and compare search methods has not been established yet. In this paper, we aim to close this knowledge gap by summarising search decisions and strategies and propose a schematic framework. It applies quantitative and qualitative metrics for prototyping, comparing, and benchmarking the NAS methods. Moreover, our framework enables categorising critical areas to search for better neural architectures.
A Framework for Exploring and Modelling Neural Architecture Search Methods
(2020) Radiuk, Pavlo; Hrypynska, Nadiia
For the past years, many researchers and engineers have been developing and optimising deep neural networks (DNN). The process of neural architecture design and tuning its hyperparameters remains monotonous, timeconsuming, and do not always ensure optimal results. In his regard, the automatic design of machine learning (AutoML) has been widely utilised, and neural architecture search (NAS) has been actively developing in recent years. Despite meaningful advances in the field of NAS, a unified, systematic approach to explore and compare search methods has not been established yet. In this paper, we aim to close this knowledge gap by summarising search decisions and strategies and propose a schematic framework. It applies quantitative and qualitative metrics for prototyping, comparing, and benchmarking the NAS methods. Moreover, our framework enables categorising critical areas to search for better neural architectures.
A mental model approach for making decisions in IT project management
(Khmelnytskyi National University, 2021-11) Radiuk, P.M.
Over the past decades, numerous researchers and practitioners have focused on the use case modeling for information technology project management. However, few studies have examined ways to improve the discovery phase of an information technology project through modifying use case diagrams. In this work, a mental model approach is suggested to integrate a visualization stage into the discovery phase by creating a conceptual mental model before constructing the use case diagram. Structuring a mental model from the users’ perspective improves junior analysts’ ability to capture, analyze, and define functional system requirements. Moreover, junior business analysts can extrapolate from the workflow presented in the conceptual mental model to determine the system’s actions to benefit the associated actor, which must appear in the use case diagram.
A method for determining the effectiveness of a distributed system for detecting abnormal manifestations
(Хмельницький національний університет, 2022) Savenko, Bohdan; Kashtalian, Antonina; Савенко, Богдан; Каштальян, Антоніна
Studying the effectiveness of self-organized distributed anomaly detection systems in computer systems is an important mandatory step, which is carried out to confirm the correctness, feasibility and feasibility of the developed solutions, including architecture, method of maintaining system integrity. In order to conduct a study on the effectiveness of the use of self-organized distributed systems, anomalies in computer systems were identified in relation to the evaluation criteria. Determining the specifics of the application of the system also affects the choice of criteria for evaluating effectiveness. The method of determining the effectiveness of the proposed solutions for the developed self-organized distributed system for detecting anomalies in computer systems has been developed. Software has been developed to ensure the functioning of a self-organized distributed anomaly detection system in computer systems to confirm the feasibility of the proposed solutions. Experimental studies with the developed implementation of a self-organized distributed system for detecting anomalies in computer systems according to the obtained coefficients confirmed the effectiveness of the proposed solutions and the developed distributed system for its operation in the computer network.
A method of resume-training of discontinuous wear state trackers for composing boosting high-accurate ensembles needed to regard statistical data inaccuracies and shifts
(Хмельницький національний університет, 2015) Romanuke, V.V.; Романюк, В.В.
For tracking metal wear states at bad statistical data inaccuracies and shifts, there is a method of resume-training of discontinuous wear state trackers for boosting them within high-accurate ensembles. These trackers are Gaussian-noiseddata- trained two-layer perceptrons. An ordinary tracker is selected and, if its performance is satisfactory, it is resumed-trained cyclically. Number of additional passes of training sets is limited. The resume-training procedure wholly can be cycled.
A model of foreign language teachers training in the information-educational environment of higher educational institutions
(2019) Гуревич, Роман Семенович; Рогульська, Оксана Олександрівна; Тарасова, Ольга Володимирівна; Магдюк, Ольга Вікторівна; Gurevych, Roman S.; Rogulska, Oksana O.; Tarasova, Olha V.; Magdiuk, Olha V.
The article addresses the expediency of creating and maintaining information-educational environment at higher educational institutions. The views of scholars on the definition of the “information- educational environment of higher educational institutions” are analyzed. The information-educational environment of Khmelnytskyi National University is described and the peculiarities of the future foreign language teachers training in the conditions of the information-educational environment of higher educational institutions are revealed. It is proved that the information-educational environment has considerable potential for improving the quality of education of the future foreign language teachers. It promotes students’ awareness of the specifics of their future professional activities, develops personal and professional qualities necessary for their future career; gives the possibility to construct individual educational paths and develop students’ creative abilities. A model of the future foreign language teachers training system in the conditions of the information- educational environment of higher educational institutions is theoretically grounded. The model contains the following blocks: target; theoretical and methodological; content and technological; control-productive. The target block of the model reveals the purpose of training and social requirements for a competitive future foreign language teacher. The target block generates other elements of the model necessary to achieve the expected result. The theoretical and methodological block includes the fundamentals of the concept of the future foreign language teachers training for professional activities; methodological approaches, didactic and specific principles. The content and technological block contains organizational and pedagogical conditions describing the main methods and forms of professional training, means and technologies for its implementation. The educational content of the model includes: compulsory and elective courses of the curriculum and practical training sessions aimed at the professional training of the future foreign language teachers. The other element of the model is the identification of stages of its implementation: theoretical and practical, correction and stabilization, reflexive and fixing. The control-productive block determines the formation of components that ensure the readiness of the future foreign language teachers for professional activity (motivational and axiological, cognitive and communicative, pragmatic and practical, functional and personal, evaluative and reflexive), criteria (motivational, educational, operational, personal, reflexive) and levels(low (reproductive), middle (productive) or high (professional).
A model of foreign language teachers training in the information-educational environment of higher educational institutions
(Institute of Information Technologies and Learning Tools, 2019-09-24) Гуревич, Роман; Магдюк, Ольга Вікторівна; Рогульська, Оксана Олександрівна; Тарасова, Ольга Володимирівна; Gurevych, Roman; Rogulska, Oksana; Tarasova, Olha; Magdiuk, Olha
The article addresses the expediency of creating and maintaining information-educational environment at higher educational institutions. The views of scholars on the definition of the “information- educational environment of higher educational institutions” are analyzed. The information-educational environment of Khmelnytskyi National University is described and the peculiarities of the future foreign language teachers training in the conditions of the information-educational environment of higher educational institutions are revealed. It is proved that the information-educational environment has considerable potential for improving the quality of education of the future foreign language teachers. It promotes students’ awareness of the specifics of their future professional activities, develops personal and professional qualities necessary for their future career; gives the possibility to construct individual educational paths and develop students’ creative abilities. A model of the future foreign language teachers training system in the conditions of the information- educational environment of higher educational institutions is theoretically grounded. The model contains the following blocks: target; theoretical and methodological; content and technological; control-productive. The target block of the model reveals the purpose of training and social requirements for a competitive future foreign language teacher. The target block generates other elements of the model necessary to achieve the expected result. The theoretical and methodological block includes the fundamentals of the concept of the future foreign language teachers training for professional activities; methodological approaches, didactic and specific principles. The content and technological block contains organizational and pedagogical conditions describing the main methods and forms of professional training, means and technologies for its implementation. The educational content of the model includes: compulsory and elective courses of the curriculum and practical training sessions aimed at the professional training of the future foreign language teachers. The other element of the model is the identification of stages of its implementation: theoretical and practical, correction and stabilization, reflexive and fixing. The control-productive block determines the formation of components that ensure the readiness of the future foreign language teachers for professional activity (motivational and axiological, cognitive and communicative, pragmatic and practical, functional and personal, evaluative and reflexive), criteria (motivational, educational, operational, personal, reflexive) and levels(low (reproductive), middle (productive) or high (professional).
A multi-criteria approach to decision-making in telecommunication network components selection
(Харків, ХАІ, 2023) Pidchenko, Sergiy; Kucheruk, Oksana; Pyvovar, Oleh; Stetsiuk, Viktor; Mishan, Viktor
The problem of decision-making regarding the selection of the optimal composition of telecommunication network components is very urgent. The subject of the research in the article is a multi-criteria approach to the selection of telecommunication network components. This approach is related to the evaluation of possible options based on a set of indicators. The set of such indicators is determined by the specifics of a telecommunication network. One of the most dominant devices in telecommunication (mobile) systems is speech codecs. When choosing the appropriate codec configuration, there is a need to make a decision considering a set of contradicting criteria. The use of MCDM (Multiple Criteria Decision Making) methods when making decisions is a promising approach to solving such problems. The current article increases the efficiency of the multi-criteria approach to decision-making in the process of selecting telecommunication network components, in particular, a speech codec. The following methods were used: MARCOS (Measurement Alternatives and Ranking according to COmpromise Solution), entropy, CRITIC (Criteria Importance Through Inter-criteria Correlation) and BWM (Best–Worst method). The following results were obtained. Determining the weight of the criteria by which alternatives are evaluated is one of the key problems that arise when making multi-criteria decisions. Objective methods of entropy, CRITIC, and subjective BWM methods were used to find weighting factors of criteria. Different methods of determining the weights of the criteria give different values. The use of the combined BWM-CRITIC method is proposed, which balances the subjective opinions of experts and assessments made solely based on the decision matrix data. The values of the correlation coefficients showed a close relationship between the weights of the criteria determined by different methods. However, the strongest connection with other methods was shown by the combined BWM-CRITIC method. The MARCOS method was used to rank the alternatives and select the best alternative. A ranking of the set of speech codecs is obtained, which allows for determining the best alternative Conclusion. A comprehensive approach to the telecommunication network component selection is proposed, namely the multi-criteria BWM-CRITIC-MARCOS model, based on a combination of MCDM methods. The integration of methods into the proposed model provides a systematic approach to the assessment and selection of telecommunication network components.
A New Technology of Bactericidal Processing of Koch’s Bacillus on the Basis of Pulsed Electromagnetic Radiation
(2018-04-24) Chumakov, Vladimir; Taranchuk, Alla; Michan, Victor; Stetsiuk, Victor
The technology of bactericidal and sterilizing processing of Koch’s Bacillus on the basis of pulsed electromagnetic ultraviolet (UV) radiation has been proposed. This technology is based on the pulse method of bactericidal processing of objects with low-temperature plasma using pulse sterilizer developed by the authors. The mathematical model of generating broadband pulsed radiation by the source of powerful optical radiation, based on the technique of charged particles accelerator, has been developed. The structure of the electromagnetic radiation source of the high-intensity optical range has been presented. The research of the bactericidal effect of pulsed UV radiation on Koch’s bacillus has been conducted.
A novel feature vector for ECG classification using deep learning
(CEUR-WS, 2023-04-14) Kovalchuk, Oleksii; Radiuk, Pavlo; Barmak, Oleksander; Petrovskyi, Sergіi; Krak, Iurii
In the past decade, deep learning techniques have been widely used in the healthcare industry to detect heartbeats and diagnose heart conditions. However, these tools have been criticized for being a “black box” and lacking transparency. Therefore, in this paper, we propose a new approach to making the classification results obtained by deep learning more comprehensible. We suggest forming a vector of features based on ECG signals that correspond to specific heart conditions. This vector includes measurable characteristics of the cardiac cycle, such as wave durations and amplitudes, which are typical and understandable to healthcare professionals. This feature vector serves as input data for a deep neural network that acts as a feature encoder and classifier. Our computational experiments with the handcrafted feature vector achieved an average accuracy of 98.69%, comparable to other deep learning tools based on the complete cardiac cycle. The results of this study suggest that future research should focus on developing interpretable deep learning tools that are transparent and comprehensible to healthcare professionals.
A Novel Method for Determining Weighting Coefficients in the Block Convolution Model of the Managerial Decisions Effectiveness Comprehensive Assessment
(2023) Hryhoruk, Pavlo; Khrushch, Nila; Grygoruk, Svitlana
The development of effective managerial decisions is the most crucial stage in management activities, a necessary condition for ensuring the competitiveness of a business entity. The complexity and high dynamism of the market environment make it essential to consider a large number of partial criteria when choosing the most effective alternative. The analysis of modern studies showed that despite many different approaches to evaluating alternatives, they are mainly based on aggregating initial criteria. Such a procedure can be carried out by applying the technology of comprehensive index assessment. A large number of partial criteria complicates the procedure for constructing a comprehensive index, makes it cumbersome, reduces its informativeness and discriminating ability, and negatively affects the significance of the weighting coefficients. To eliminate these shortcomings, the article considers the procedure of block convolution, in which the initial criteria are first divided into groups according to specific rules. A partial comprehensive index is constructed for each group. At the next stage, they are integrated into a comprehensive index of the effectiveness of alternatives by weighted convolution. For the case of two partial comprehensive indexes, a method of dynamic weighting coefficients has been developed to evaluate each component's importance in their convolution. Its feature is the consideration of a more significant partial comprehensive indicator obtained at the first stage of convolution, which allows for reducing the compensatory influence of another one. For the interpretation of alternatives' evaluation results and the selection of the most suitable as a managerial decision, it is proposed to use the Harrington scale. The paper contains a graphic interpretation of the proposed approach and its practical approbation, which confirms its effectiveness
A prestressed elastic strip with elastic reinforcements
(2002-11) Діхтярук, Микола Миколайович; Рудницький, В‘ячеслав Броніславович; Dikhtyaruk, N.N.; Rudnitskii, V.B.
A contact problem is studied for a prestressed elastic strip with an elastic reinforcement. The integral Fourier transform is used to construct an influence function for an infinite strip with one face fixed. A unit concentrated force is applied to the strip at an arbitrary angle. The contact problem on force transfer from a thin infinite stringer to the prestressed strip is solved. The problem is mathematically formulated as a system of integro-differential equations for the unknown contact stresses on the assumption that the beam bending model and the uniaxial stress model are valid for the stringer, which is subjected to both vertical and horizontal forces. This system is solved in a closed form using the integral Fourier transform. The contact stresses are expressed in terms of Fourier integrals in a quite simple form. The influence of the initial stresses on the contact stress distribution is analyzed, and effects of concentrated load are revealed.
A program tool for practicing the model of searching an active object as multistage diagonal game
(Донецький національний технічний університет, 2010) Romanuke, V.V.
There has been represented a model of searching an active object within a closed checkered area as multistage diagonal game. The evolving from stage to stage solution of this game may be found with the developed and represented program tool. The tool returns the solutions and plots bar-like distribution of their elements up with the prior sojourn probabilities distribution over the area.
A self-organized automated system to control unmanned aerial vehicles for object detection
(CEUR-Workshop Proceedings, 2023) Melnychenko, O.; Savenko, O.
Dynamic acquisition of an image in three-dimensional space in dynamic mode with its subsequent processing in recognizing structural objects of the exact nature is an urgent task. It needs to ensure the high accuracy of the recognition result and the correct, complete definition of an image. Further calculation of the number of such objects is required. Moreover, it is essential to ensure detection functions inside such a self-organized system in case of classifying input data. In this work, we propose a novel self-organized automated system in which one or several UAVs are controlled and monitored to acquire images of detected objects, considering one object at a time. The outcome of this study serves as the basis for the creation of new means that can launch and monitor unmanned aerial vehicles over subsets of the studied space area according to the given initial data. The architecture designed in this way allows for achieving the appropriate level of organization when determining the next steps in functioning subsystems and components. The conducted experiments confirm the possibility of practical implementation of the proposed architectural solutions.
A theorem on continuum of the projector optimal behaviors in antagonistic model of building resources distribution under segment uncertainties with incorrectly pre-evaluated one left and one right endpoints
(Хмельницький національний університет, 2011) Romanuke, V.V.
Abrasive and Fretting Wear Resistance of Refractory Cobalt Alloy Specimens Manufactured by the Method of Selective Laser Melting
(2014) Tarasova, T.V.; Nazarov, A.P.; Shalapko, Yu.I.
This paper reports the results of comparative studies of the abrasive and fretting wear resistance of specimens manufactured by the method of selective laser melting and casting. The materials of specimens are powdered CoCrMo cobalt refractory alloy and the cast KKhS D cobalt based alloy
Academic communication: a foundational skill for scholarly and educational success
(Riga, Latvia : «Baltija Publishing», 2025-11) Lysak, Halyna
The main aim of the article is to provide a comprehensive overview of academic communication by explaining its nature, key characteristics, and various types, while highlighting the challenges students face and offering strategies to enhance effectiveness. The article seeks to help students, educators, and researchers understand how academic communication functions across different contexts and platforms, enabling them to develop stronger academic literacy, critical thinking, and meaningful participation in scholarly communities.
Academic english as a component of curriculum for esl students (foreign experience)
(Хмельницький національний університет, 2019-03) Садовець, Олеся; Sadovets, Olesia
It has been substantiated that Academic English must be an integral component of ESL students’ study at foreign languages departmentssyllabus, to achieve success as professionals and be ready to realize themselves in a demanding world of today. We have defined the main problem on the way to it, namely the insufficient provision of the Academic English discipline in curricula of foreign language departments or its absence. The necessity to elaborate a syllabus for Academic English discipline being taught throughout all the course of study has been substantiated. Educational programs of Academic English in a number of foreign educational establishments of Great Britain, the USA, Canada and Australia have been analyzed and their defining features have been outlined. Strategies and conditions for effective teaching of Academic English have been characterized. It has been defined that in general, in spite of slight differences in the topics covered by different EAP programs, all of them are aimed at: developing strategies and vocabulary for reading and understanding academic texts; finding, understanding, describing and evaluating information for academic purposes; developing active listening and effective note-taking skills; building on language skills to describe problems and cause-and-effect; gathering a range of information, using the skills learned, to integrate it into a written report; engaging in peer-to-peer feedback before finalising one’s piece of academic work. Requirements for students’ achievements at the end of the course have been determined. As a basis for Academic English syllabus elaboration has been chosen a course by M. Hewings and C. Thaine (upper-intermediate and advanced levels). On its basis we have defined units to be covered by the course as well as skills to be developed. Recommendations as to better and more efficient teaching of the discipline have been outlined.
Academic writing as a part of curriculum for ESL students
(Сумський державний педагогічний університет імені А. С. Макаренка, 2018-11) Садовець, Олеся Володимирівна; Sadovets, Olesia
Academic writing should be included into ESL students’ curriculum in the form of a separate discipline or at least a module of Scientific Research Basics Course. Its availability testifies to students’ ability to demonstrate that they are knowledgeable about the latest information in their discipline; can develop an argument and reason on the basis of evidence; can design and conduct independent research; are prepared for graduate employment in a particular profession; can reflect on how they and other people feel and think.
Accounting of the use of profits for financing social projects
(Riga, Latvia: Publishing House “Baltija Publishing”, 2020-06) Fesun, Iryna
Support for socially responsible projects requires significant financial costs and is initiated by the owners of capital (business). The latter require reliable information support to make management decisions on such investments, which is formed in accounting
Accuracy improvement in wear state discontinuous tracking model regarding statistical data inaccuracies and shifts with boosting miniensemble of two-layer perceptrons
(Khmelnitskiy National University, 2014) Romanuke, V.V.; Романюк, В.В.
There is presented a method of improving accuracy in tracking metal tool wear states discontinuously, when the states’ finite set has been statistically tied to the set of representative wear influencing factors. Range of wear states is presumed to be wholly sampled into those factors. The tracker is a static model based on boosting mini-ensemble of three twolayer perceptrons with nonlinear transfer functions. It regards statistical data inaccuracies and shifts. For making the ensemble, the AdaBoost technique is used. A distinction of the presented method of boosting from the AdaBoost is in the rule for finding the decreasing coefficient in order to re-distribute weights over training samples. Another one is that the ensemble is aggregated at once. The averaged gain of the boosting mini-ensemble in tracking 24 wear states with 16 influencing factors exceeds 50 %. The wear state tracking model is going to be perfected on optimizing two parameters of the training set and the naive rule for finding the decreasing coefficient before re-distributing training samples’ weights.
Achievements in training of future technology teachers: European experience
(Khmelnytskyi National University, 2015) Sheludko, I.
The article discusses the possibilities and prospects of using the experience of training future technology teachers in European countries. Its structure and content in accordance with national traditions and European standards led to the success of the educational components of the European Higher Pedagogical School. This fact encourages local scientists and teachers to identify ways of educational achievements use in European education system of technology teachers training. According to the above, we have defined the following tasks: summarize the progressive trends and approaches to quality training of European teachers of technology in national high school; formulate guidelines that will help improve training efficiency of Ukrainian technology teachers and, consequently, ensure the successful integration of the national educational system to the European Higher Education Area.
Achieving environmental security with economic impact
(Національний технічний університет «Дніпровська політехніка», м. Дніпро., 2020-12-17) Нестер, Анатолій Антонович; Нікітін, Олександр Олексійович; Романішина, Ольга Валеріївна; Мітюк, Людмила Олексіївна; Полукаров, Юрій Олексійович; Nester, A.A.; Nikitin, O.O.; Romanishina, O.V. ; Mitiuk, L.O. ; Polukarov, Yu.O.
Скидання та збереження на території підприємств відпрацьованих травильних розчинів призводить до забруднення навколишнього середовища, вимагає значних витрат при їх знешкодженні на підприємстві й на очисних спорудах у місцях розташування виробництв.
Acoustic emission application for nondestructive strength diagnostics of printed circuit boards
(Хмельницький національний університет, 2018-01) Ковтун, Ігор Іванович; Бойко, Юлій Миколайович; Петращук, Світлана Анатоліївна; Kovtun, I.; Boiko, J.; Petrashchuk, S.
The paper represents developing nondestructive method for strength diagnostics of solder joints on printed circuit boards with application of acoustic emission method. Solder joints studied in the current research were performed by throughhole technology. The research methods involved static mechanical tensile and bend tests, and acoustic emission method. First solder joint strength research was conducted by static mechanical tensile tests. The batch of solder joints were tested in three equal groups: solder joints, which had no defects; solder joints, which had “cold solder” defect; solder joints, which had “low solder adhesion” defect. The load was applied with the constant speed. During the test the following acoustic emission parameters were recorded: amplitude; activity; total count in order to assess acoustic emission parameters against types of defects and find their possible correlation. Strength diagnostics conducted for solder joints performed by throughhole technology on printed circuit boards by using methods of mechanical tests with simultaneous monitoring both mechanical characteristics and acoustic emission parameters allowed to find the relationship between parameters of acoustic emission and such defects of solder joints as “cold joint” and “low solder adhesion”. The pure bending technique has been developed to perform flexure tests on printed circuit boards, which provides equal testing stress condition over the printed circuit board and allows to estimate maximal acceptable load for nondestructive tests. The testing was considered to conduct in multiple load and unload cycles. The tests were conducted for the batch of double sided fiberglass foil laminated printed circuit boards, which were prepared and sorted into three equal groups by defects embedded into their solder joints. Acoustic emission data analysis indicated total count as the most informative parameter to correlate with various types of solder joint defects. Conducted experiments gave the reason to use identified character of acoustic emission to develop methods for strength diagnostics of solder joints on printed circuit boards.
Acoustic emission application for nondestructive strength diagnostics of printed circuit boards
(Хмельницький національний університет, 2018) Kovtun, I.; Boiko, J.; Petrashchuk, S.; Ковтун, І.; Бойко, Ю.М.; Петращук, С.А.
The paper represents developing nondestructive method for strength diagnostics of solder joints on printed circuit boards with application of acoustic emission method. Solder joints studied in the current research were performed by through-hole technology. The research methods involved static mechanical tensile and bend tests, and acoustic emission method. First solder joint strength research was conducted by static mechanical tensile tests. The batch of solder joints were tested in three equal groups: solder joints, which had no defects; solder joints, which had “cold solder” defect; solder joints, which had “low solder adhesion” defect. The load was applied with the constant speed. During the test the following acoustic emission parameters were recorded: amplitude; activity; total count in order to assess acoustic emission parameters against types of defects and find their possible correlation. Strength diagnostics conducted for solder joints performed by throughhole technology on printed circuit boards by using methods of mechanical tests with simultaneous monitoring both mechanical characteristics and acoustic emission parameters allowed to find the relationship between parameters of acoustic emission and such defects of solder joints as “cold joint” and “low solder adhesion”. The pure bending technique has been developed to perform flexure tests on printed circuit boards, which provides equal testing stress condition over the printed circuit board and allows to estimate maximal acceptable load for nondestructive tests. The testing was considered to conduct in multiple load and unload cycles. The tests were conducted for the batch of double sided fiberglass foil laminated printed circuit boards, which were prepared and sorted into three equal groups by defects embedded into their solder joints. Acoustic emission data analysis indicated total count as the most informative parameter to correlate with various types of solder joint defects. Conducted experiments gave the reason to use identified character of acoustic emission to develop methods for strength diagnostics of solder joints on printed circuit boards.

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