Black Sea Science

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https://card-file.ontu.edu.ua/handle/123456789/3576

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3D-modeling of the interior of the rooms by cloud technologies
(2020) Tsybulnyk, O.
The work considers the possibility of using 3D-modeling technology for interior design of restaurant premises; criteria were determined and on-line applications designed for 3D interior design were compared, their advantages and disadvantages are defined. The example of one of the on-line services describes how to design an interior project for a pop art youth café.
A comparative approach on human capital formation in the Baltic countries and countries from the Eastern partnership. The determinants of human capital formation in the Republic of Moldova.
(2021) Mahmadbecov, R.
Human capital formation and development are some concepts that have nowadays a considerable meaning in the process of a sustainable development creation of a country and economically ans socially stable society. There are countries that, having similar economic and life representing indicators in the socialist times, have evolved differently after gaining their independences. A period of thirty years has determined the Baltic countries to improve the quality of human capital formation and to motivate people to stay home and, thus, managing to improve their performance in the Human Development Index(HDI)(Estonia occupying the place 29, Latvia - 37, Lithuania- 34 out of 189 countries, 2019) whereas other countries, such as the ones from the Eastern Partnership that took a similar pace with a lag of ten years, are performing less good and this fact has been reflected in the ranking of the HDI (Georgia occupying the place 61 , Ukraine – 74, Moldova – 90). Numerous factors have determined the Republic of Moldova to lag in the process of flourishment, all of them caused by the political and ideologiacal values and crises, corruption, low level of endowment with resources, late orientation towards new capitalistic markets, unsustainlable social security system, followed consequently by several waves of consistent migration flows. The local governments did not manage to comprehend all the variables and boost a good practice of addressing towards local people, society individuals, as a consequence having a country depending on remittances (in 2006 remittances representing 36.4% of GDP, in 2017 - about 20% of GDP, and in 2019 - 15%) and having a distorted structure of local economy, described by a high share of people involved in the retail activities and many people activating in a sphere other than the ones in which they conducted their studies of profession.The performed research has shown that policies towards human capital formation have an important impact on the economic performance of a country and its efferent position in the world rankings.
A compiler of domain-specific language for "Smart-home" applications: design principles and implementation issues
(2022) Nelipa, O.
The actuality to use of a domain-specific language (DSL) concept in such complex problem areas as the Internet of Things systems and “Smart-Home applications (SHA)” is motivated. The overview of the main methods and software tools for DSL design and implementation is done, and one possible scheme for their classifications is proposed. The approach to DSL compiler designing for SHA is proposed which is based on a configurable grammar rules system. All main functional blocks for the proposed DSL compiler are developed using such programming tools as Python and C++, and the first testing results of this implementation are obtained and analyzed. The effectiveness assessment for this compiler prototype is provided in the way to calculate of two quantitative metrics, and this one allowed to get the approximated weighted efficiency value of the compiler’s usage about 16.75%. It shows the acceptable quality of the elaborated DSL compiler’s prototype, allows to make the positive conclusions about the proposed approach, and to formulate some further work to be done in this research.
A novel two-stage ejector refrigerator with mixed refrigerants
(2018) Wang, Xuehui; Zhou, Yifan; Pan, Yini; Chen, Guangming
The energy consumption is ramping up in recent decades. Therefore, it was very important to recover and utilize the low-grade energy, such as the solar energy, the geothermal energy and low-temperature waste heat discharged to the environment. The ejector system has a good prospect in this area due to its obvious advantages :simple structure, without moving part and available for heat sources in different temperature levels, as well as long life-span. Nevertheless, the coefficient of performance of the ejector system is relatively low, so the technology to optimize the ejector refrigeration cycle has been hot topics. In this report, a novel two-stage ejector system with mixed refrigerants was proposed to improve the efficiency of the ejector system. A separator was used to divide the working fluid to high boiling point fluid and low boiling point fluid. The performance of the new system was calculated and compared with other ejector systems. It was suggested that the novel system had a higher COP than other ejector refrigeration systems. Furthermore, it could operate at a higher condensation temperature. When the condensation temperature continued to rise above 50℃, the new system could still be reliable and the COP was about 0.1
A real-world case study of a vehicle routing problem
(2022) Matusevičius, A.; Lašas, K.
The goal of this study is to create a route planning methodology. The created methodology assisgns cargo to a given set of vehicles in such a way that the profits would be maximized. When planning a route, the work hours of pick-up locations, are considered as well as when each cargo is ready to be picked up. Furthermore, cargo that is worth less than what it would cost to transport it, is removed from planning. Also, a unique feature to the original Pickup-and-Delivery problem with time windows is introduced. Namely, cargo can be redirected to depots for a fee, which lets drivers spend less time on the road and collect the redirected cargo in one place. The genetic algorithm method, proves to be a viable approach as it produces failry good results in relatively short time.
A result-oriented framework to support the low-carbon transformation of energy services market
(2021) Yevtukhova, M.
Today, the scope of energy services markets (ESMs) has expanded worldwide and covered almost all areas of production and consumption of goods and services for both industrial and public appointments, as well as households, mainly due to energy efficiency and renewable energy sources. At the same time, the incompleteness of theoretically grounded bases significantly reduces the pace of these markets development. The purpose of this study is to present the framework for the determination of directions and construct a model of structural organization and functional interaction of the ESMs participants. Such approach allows, by combining resources, capabilities and information, to expand the scope and improve the efficiency and productivity of energy services. A new structure-function model of ESMs participants’ interaction has been developed. In addition, a new organizational mechanism is proposed to support the efficient functioning of the ESMs in the form of a cycle of continuous improvement of the energy services results. The practical significance of the study is to create a conceptual framework for the organization and functioning of ESMs, which allows to systemically assess the new opportunities for such markets in both developed and developing countries.
Adaptive mobile application for the CATS learning system
(2020) Lehchylin, I.
Using mobile devices around the world has already become commonplace. There are a huge number of applications that greatly simplify everyday life: from simple planning of actions and events to paying for goods by simply touching the terminal with a mobile device. That is why the problem of integration a mobile learning application into the educational process is quite relevant. The purpose of this study is to increase the efficiency of the learning process through using CATS adaptive mobile application. During the study, existing learning systems were examined, their advantages and disadvantages were determined, requirements for the development of a new mobile application for the adaptive training system CATS were developed. The implementation of the mobile application is made in the environment of Microsoft Visual Studio Community (Mac), the programming language is C#. The proposed development has been integrated into the educational process of the Belarusian National Technical University.
Air-liquid microtube carbon dioxide capture system
(2022) Popivchak, B.; Koval, S.
Our approach lies in using an already effective and performant mechanism of the human respiratory system repurposed to filter and transform carbon dioxide instead of oxygen. This concept effectively divides posed problem into three separate tasks: capturing of CO2 (taking analogy from alveoli to increase contact area), transportation of CO2 through-out the system (optimized substance analogous to blood to provide minimum losses of gas), and utilization system (inspired by cells functionality we combine CO2 with industrial waste to produce carbonates). What is unique in our approach is the choice of materials and substances that enable us to create efficient and performant system.
An application for demonstrating and comparing sorting and retrieval algorithms
(2020) Sokolskyi, O.
The use and information and communication of their technology and in education is constantly increasing, including - when teaching professional disciplines in high school. The study of algorithms for sorting and searching data is provided by many educational programs of the specialties of the field of knowledge "Information Technologies". Using the process of presenting these sections of the information and communication means learning how a demonstration is application allows to better understand the essence of each algorithm, cf. ivnyaty them on specific examples. The purpose of the work is to develop a program (application) in the visual programming environment, which would allow students studying the algorithms for sorting and searching data , to observe the process and to analyze the advantages and disadvantages of a number of methods to better understand the principles of their work. The object of study - algorithms for sorting and searching data . The subject of the study is demonstration of a number of algorithms and their comparison. The first section looks at some algorithms and sorts and retrieves data, and analyzes existing software systems. The second section is performed to develop object-oriented model of a software system means s visual design and UML notation functional model BPWin. The third section provides a user guide and an example of how the software system model is developed.
An educational platform for sustainable development with E-learning modules and a terminology database
(2021) Razalskaya, M.
Analysis and decision of regional economic vitality and its influencing factors
(2020) Wang, Yining
Regional economic vitality is an important component of regional comprehensive competitiveness. Therefore, how to grasp the key factors and effectively improve the regional economic vitality is a research direction with practical value. Through researching a large number of related literatures, this article proposes two issues for research: 1. Taking a region as an example, establishing a relationship model of regional economic vitality influencing factors, proposing action plans, and analyzing regional economic vitality from the perspective of population and corporate vitality trends Impact of change. 2. Select a suitable index system to establish a mathematical model for measuring regional economic vitality, and rank regional economic vitality in Beijing, Shanghai, Guangzhou, Shenzhen, and some second-tier cities. For the first question, this article starts from five aspects of economic aggregate, corporate benefits, government regulation, residents' situation and environment, selects 22 indicators, uses correlation analysis method to select 8 optimal indicators, and then uses subjective weighting method and The model combined with objective weighting method obtains the weight of each indicator, scores the regional economic vitality, and obtains the relationship model of the factors that influence the regional economic vitality, and proposes an action plan. Finally, it uses regression analysis to find that the population growth rate negatively affects the regional economy. Vitality, the growth rate of the number of enterprises is positively affecting regional economic vitality. For the second question, this paper tests the relational model given in the first question. It is found that there is an error from the actual test, so it needs to be corrected. This article uses hypothesis testing model ideas and adds two correction coefficients based on a mathematical model of normal distribution, and then performs linear programming on the correction factors, and then tests the relative error to determine whether it makes the probability histogram follow a normal distribution image The relative error is less than 0.05, and then the hypothesis is justified based on the conclusion. After correction, it was found that it was indeed within the acceptable range, and the top three cities that got the economic vitality were Shanghai, Beijing, and Shenzhen. Based on the previous conclusions, this article puts forward a series of suggestions for promoting the development of talents, informatization, technological innovation, and industrial upgrading in Beijing. It provides a reference for the sustainable development of regional economic vitality and the improvement of regional competitiveness. Value.
Analysis of lip-sync technologies and possible ways to improve them
(2021) Isaiko, S.; Pohorieltsev, P.
Lip-sync technology advanced over the years. From hand drawn and synced images of first animated movies, to human live performances on stage, then on screen and finally – using advanced neural networks and variety of other techniques, to automate this process. This work covers a bit of a history behind the lip-sync, dives into technologies of present and discuses about future possible growth ways. The objective of this work is to provide reader with information about past and present techniques of lip-sync.
Analysis of mixtures at laser surfacing using computer vision
(2021) Kovalevskyi, M.
A method of contour recognition is considered, which includes several stages of processing the original image. Some methods of contour recognition are highlighted and their characteristic features are described. A certain sequence of applying the stages of processing the input image is proposed. Examples of output data after applying image processing and the results of their analysis are given. The comparison of the quality of contour recognition for each type of powder is carried out, the error of the analysis is calculated, and the corresponding conclusions are drawn.
Analysis of pharmaceutical waste management methods based on the example of the quality control department of a pharmaceutical company
(2020) Nosachenko, M.
The methods of waste management in the pharmaceutical company. Shown classification of waste generated as a result of the quality control department, in their type, a way of recycling and registration. Established line of action designed for waste management enterprises investigated, legislation of Ukraine. The process of waste management in the pharmaceutical company PDCA cycle occurs. Statistical data obtained from the relevant documentation allow us to investigate, analyze and, if necessary, to make corrective actions in the process of waste management.
Analysis of relevance of development of information resource of workflow planning for business administrators
(2020) Balaban, D.
This paper examines the relevance of creating a new workflow planning product for business administrators. In time when time management is an important part of our lives, there are many programs that help to organize the time, but all programs have their pros and cons. We will carry out the analysis of time planning on several currently relevant programs for planning the time, will consider the advantages and disadvantages, and on the basis of these data we will consider whether the creation of a new program is relevant and what functionality is needed in it.
Analytical study of the thermal conductivity processes at ceramic sintering
(2022) Grechanovskaya, M.
The analytical study of the processes of thermal conductivity at high intensity heating of dense bodies, similar to clay and plastic materials, was conducted. The conditions of applicability for the hyperbolic and parabolic equation of thermal conductivity for the composition of mathematical models of high intensity heating were explored. It was found that for the small Fourier numbers, the solution of hyperbolic equation of thermal conductivity makes it possible to determine thickness of the thermal layer and its change over time. Based on the example of manufacturing technical ceramics, it was demonstrated that the possible heating rates are considerably below the boundary rate, within which the velocity of heat propagation may be accepted as infinitely high. The conclusion was drawn that in the course of construction of mathematical models for the processes of thermal treatment in the technologies for the production of technical ceramics and the products similar to them in the intensity of heating, it is rational to take the thermal conductivity equation of parabolic type as the basis. The analytical solution, which makes it possible to calculate temperature field of the semi-restricted array under conditions of microwave heating, was obtained on the basis of the equation of thermal conductivity with internal heat sources, taking into consideration heat exchange with the environment. Results of computational experiment testify to the correctness of the proposed dependency.
Application of ARDUINO microcontroller system in the educational process
(2021) Yakovleva, K.
This paper considers the possibility of using the microprocessor system "ARDUINO" in the learning process. In today's world, students of technical schools must be well versed in digital technology, programming and have some technical skills in the use of modern microcontrollers. Microcontrollers are very complex devices and in order to understand the operation of these devices you need to spend a lot of time studying the technical documentation as well as a good knowledge of technical English. In addition, you need to know the programming language (eg C ++) and have a programmer with which to program the microcontroller. This paper presents the development of a universal laboratory stand for learning the basics of programming and studying the hardware of microcontroller technologies.
Application of image processing with multilevel thresholding for mould detection on blue cheese cut surface
(2021) Ivanov, I.; Karparov, V.; Kutryanska, M.
The techniques used by computer vision are based on signals which carry information about objects and their processing using wide range of methods. There are variety of types of signals according to their frequency or wave length. The visual range of spectrum is defined for wave with length between 380 nm and 750 nm. The waves with such length are registered by humans’ receptors and they form sensitivity for colors. The human accepts the biggest portion of information about environment through its vision. Because of this there are developed a lot of methods for storing and processing the visual information. In the last years digital information processing and especially computer based such, is widely used in every area of human activity. By this way the computer vision and especially image processing became to be very important for human life. As a part of quality of human’s life, the quality of food is also controlled by methods of computer vision. The subject of this research is one of popular dairy products – blue cheese. The characteristics taste and smell of this cheese are formed thanks to growth of mould Penicillium roqueforti. The growth of this moulds is detected by images processing with multilevel thresholding based on Otsu’s method. Samples of eight trademarks of blue cheese are used for experiments. The results show that multilevel thresholding with two levels is appropriate for mould detection but multilevel thresholding with four levels support detection of areas with high concentration of moulds Penicillium roqueforti and areas with weak growth of moulds. Based on these results, in the future a software which would be helpful in reaching a high-quality control in the dairy industry could be developed.
Application of the method of gradual formation of sets of admissible values for solving combinatorial optimization problems
(2021) Mushyn, M.
This article describes a method of gradual formation of sets of admissible values as an alternative to backtracking and account for changes methods. The mechanism of algorithms that apply these methods to solve combinatorial optimization problems is substantiated. Fragments of programs that implement these algorithms in C# programming language are given and the results of their testing in a remote computing environment are analyzed. Test results show that the implementation of the method of gradual formation of sets of admissible values cardinally reduces the execution time of programs, indicating its effectiveness.
Aquaculture – a field of the future: national property, world trends of development
(2022) Kramarenko, A.; Smilichenko, H.
The paper considers aquaculture as the fastest growing livestock sector. Aquaculture in Ukraine is the third most important source of animal protein after livestock and poultry. In addition, the development of aquaculture makes a significant contribution to the employment of the rural population and the population of coastal areas. Aquaculture in Ukraine as a whole is developing similarly for the whole of Central Europe as a whole: stagnation, and sometimes a decline in the production of marketable products, the main in the recent past in terms of aquaculture facilities. The development of small and medium-sized enterprises in the field of industrial fishing and fish farming is associated with the predominance of small and mediumsized enterprises in the fisheries sector. The paper characterizes aquaculture as a type of entrepreneurial activity, outlines the role of small business in the development of aquaculture. The study identified risk factors as groups of threats that hinder the development of the fisheries complex (external and internal), and systematized the risks that limit the development of enterprises in this sector.

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