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- Документ3D-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.
- ДокументA novel two-stage ejector refrigerator with mixed refrigerants(2018) Wang, Xuehui; Zhou, Yifan; Pan, Yini; Chen, GuangmingThe 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
- ДокументA 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.
- ДокументA 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.
- ДокументAccounting for innovative activities of enterprises(2023) Gavrilyuk Z.Розвиток суб'єктів господарювання можливий лише за умова постійного оновлення готової продукції та послуг. Бухгалтерський облік і аналітичне забезпечення процесу інноваційної діяльності є трудомістким завданням до усвідомлення процедур обліку на кожному етапі інновації розвитку. Метою наукової роботи є вдосконалення теоретичних і методологічні засади обліку та аналізу в інноваційному процесі діяльність підприємства. Проведено експертну оцінку для виявлення бухгалтерського обліку та аналіз задач на основі анкетування із залученням бухгалтерів провідних підприємств Волині та науковці вищих навчальних закладів. Результатом стали методичні рекомендації з обліку інноваційної діяльності сформовані, які використовувалися в практичній діяльності підприємств.
- ДокументAir-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.
- ДокументAn intelligent platform for conducting ecological surveys of water bodies(2023) Nieviedrov M.У статті розглядається актуальність використання нової інтелектуальної робототехніки платформу для швидкого проведення фундаментальних досліджень з оцінки якості води у водоймах та аналізувати рельєф дна водойми, зберігаючи всі дані. Папір це доводить використання інтелектуальної платформи для аналізу води значно полегшує дослідження. Крім того, це збільшує досліджувану площу водойми. Це спрощує процес встановлення відповідності даних конкретному місцю на водоймі порівнюваного до класичних методів аналізу якості води у водосховищі. Представлена методика дозволяє проводити дослідження різних видів забруднень: радіаційних, теплових, кислотних, промислових, побутових, органічних, а також для контролю за проникненням надходження шкідливих речовин у водойми внаслідок техногенних катастроф або проведення військові дії.
- ДокументAnalysis and decision of regional economic vitality and its influencing factors(2020) Wang, YiningRegional 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.
- ДокументAnalysis of biological methods of wastewater treatment(2023) Danyliuk M.; Georgiev D.Метою роботи є аналіз існуючих водно-болотних систем, біотехнології використання гідробіонтів та аерованих лагун в очищенні стічних вод системи. Завданням роботи є розробка експериментальних очисних установок на базі його функціональні характеристики для пропозиції вдосконалених моделей. Актуальність роботи це зростання забруднення навколишнього середовища, спричинене стічними водами.
- ДокументAnalysis of color noise effect on quality of recovering the chaotic signals(2023) Stoliar O.Останнім часом, у ході розвитку сучасних систем передачі інформації, все більше уваги приділялося пошуку нових способів формування і обробка сигналів, яка може одночасно забезпечити необхідний рівень скритності і швидкість передачі інформації. Хаотичні сигнали з модуляцією OFDM задовольняють ці вимоги вимоги. Проте ефективність їх функціонування досліджена лише під час вплив «білого» шуму. Тим не менш, в реальному радіозв'язку канали є Інші види шуму, які називають кольоровим шумом. Такі шуми виникають через перешкоди в середовищі розповсюдження радіосигналів і в засобах генерації сигналів. У статті проаналізовано вплив на хаотичні сигнали з OFDM-модуляцією шуми різного кольору. Шуми згенеровані лінійним інтегральним перетворенням <білий= шум із ядром Mandelbrot9. Отримані результати показали, що якщо в отримано присутність сигналу корисний сигнал і один тип кольорового шуму (<білий=, <рожевий=, <чорний=) необхідний рівень відновлення повідомлення досягається приблизно рівним сигнал/шум співвідношення. Кількість піднесучих у хаотичному сигналі з впливом OFDM-модуляції Якість відновлення, їх підвищення призводить до підвищення необхідного співвідношення сигнал-шум коефіцієнти на стороні приймача.
- ДокументAnalysis 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.
- ДокументAnalysis 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.
- ДокументAnalytical 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.
- ДокументApplication 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.
- ДокументApplication of fuzzy logic for automated fault-finding in the power supply network(2023) Maksimenko O.; Levchenko М.У разі пошкодження комутаційного апарату на трансформаторній підстанції відключає напругу по всій лінії, де сталося пошкодження. Тоді є проблема пошуку місця пошкодження. Існуючі технічні засоби локації місця пошкодження в умовах великої протяжності та розгалуженості розподільних мереж України коштують досить дорого. Тому завдання знайти порчу іншими, менше дорогі, методи в даний час актуальні. Одним із найкращих способів зменшити негативний вплив пошкоджень є зменшення загальної суми час їх пошуку та усунення за період експлуатації. Особливо важливо роль у цьому відіграє засіб визначення місця пошкодження (ВМП). в умови пересіченої місцевості, слабка розвиненість дорожньої мережі, наявність ліній електропередачі значної довжини вдала ВМП дозволяє скоротити час пошуку пошкодження кілька разів. Робота присвячена актуальній проблемі зниження втрат від пошкодження електромереж. Ключові слова: логічне керування, пошкодження мережі, математична модель, програмне забезпечення реалізація, ЛЕП.
- ДокументApplication 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.
- ДокументApplication 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.
- ДокументAquaculture – 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.
- ДокументArtificial intelligence(2021) Cvetanov, A.The toFig of this work is artificial intelligence, what it represents, its development throughout the years, and its use in everyday life. The main purpose is to show the value of artificial intelligence to the world, and to put into perspective the way AI has been developed and utilized with the creation and evolution of intelligent machines. Artificial intelligence has had a substantial influence on people’s lives, however many people still believe that AI will one day lead to more bad than it will ever do good to the world. The main goal of this paper, is to learn and explore the world of artificial intelligence, and perhaps help readers dive deeper in order to learn new and exciting things.
- ДокументAssessment of the fuzzy state of complex systems(2020) Yakovenko, A.The paper considers the problem of estimating the state of the enterprise (on example of the IT company). The problem is presented in the form of two problems. The first problem is the aggregation of the initial information and the second problem is the identification of the state of a complex system. To solve the problem of aggregation of initial data authors used the fuzzy cluster analysis, namely the fuzzy k-means method. The results allow to formalize linguistic variables, which are characterized by the term-sets and definition range. The numerical results were approximated by analytical membership functions. The solution of the first task allows to generate a set of possible fuzzy reference situations. Each situation is characterized by the reference informational granule, which contains information about formalized linguistic variables. The second problem was solved by using the method of fuzzy logic in the MATLAB environment. In this test case, the search of the situation in which the IT-company is located was performed. At this stage, the current situation belongs to comparison with each reference situation. In this way, authors determined the most similar reference situation to the current situation. An analysis of the resulting situation allows to argue the state of the IT company. The solution of the second task allowed to establish assessment of IT company state. The theoretical and practical results can improve the efficiency of complex system management.