Technology transfer: fundamental principles and innovative technical solutions 2021-12-22T14:34:13+02:00 Helen Klimashevska Open Journal Systems <p>Scientific papers from an annual conference <strong>«</strong><strong>Technology Transfer: fundamental principles and innovative technical solutions»</strong>&nbsp;address topical issues of technological advancements, the implementation of which could contribute to the development of different sectors of the economy. When assessing the quality of scientific reports submitted for publication, reviewers pay attention not only to the originality of scientific results, but also to the possibility of their transformation into the form that could become the basis for practical implementation.&nbsp;<br>Subjects of scientific reports cover all areas of scientific knowledge in engineering that could contribute to the creation and implementation of engineering products in industry: the design of technological systems, including by methods of mathematical modeling, materials science, technologies of extraction, transformation, and processing of materials, IT applications, energy supply.<br>All these works can be evaluated based on the results achieved in terms of resource and energy saving, improving the quality and competitiveness of products, reducing the environmental burden in the production process.<br>The published volumes of scientific reports are not large, but they reflect the obtained results of research in the most compact form corresponding to the standard structure of scientific papers.<br>Main users of the published scientific reports from the conference are experts-practitioners interested in the implementation of scientific developments.&nbsp;<br>The structure and content of scientific reports define the mission and tittle of the scientific conference <strong>«</strong><strong>Technology Transfer: fundamental principles and innovative technical solutions»</strong>.</p> <p><strong>Headlines of the conference:<br></strong>- Computer sciences<br>- Material science<br>- Mechanics science<br>- Fundamental and applied physics<br>- Ecology science<br>- Chemical engineering<br>- Chemical science<br>- Mechanical engineering<br>- Mathematical sciences<br>- Geology<br>- Engineering<br>- Chemistry<br>- Earth and planetary sciences</p> The intelligent monitoring and evaluation of the psychophysiological state of the workers employed on offshore oil and gas platforms 2021-12-22T14:34:13+02:00 Masuma Mammadovа Zarifa Jabrayilova <p>Oil and gas companies have an urgent need for technologies that provide complete and reliable information about the actual state of health and safety of personnel. To solve this problem, the article proposes a concept solution for the development of a system monitoring of the psychophysiological health of workers employed on offshore oil platforms. The concept is based on a person-centered approach and allows monitoring of health of employees simultaneously linking them to the context of the environment. The urgency of the problem is confirmed by statistical data, according to which workers in the oil and gas industry are 8 times more likely to get injured. The article analyzes the specific features of the professional activity of the workers employed on offshore oil platforms and shows that the deterioration of their health and psychological condition due to the long-term “sea environment” is unavoidable. It offers to develop an intelligent system for monitoring the psychophysiological condition of workers employed on offshore oil platforms and to assess its suitability for their position with the reference to the Cattell test and fuzzy patterns recognition. The development and systematic operation of such a system may timely detect undesirable consequences for the health status of workers employed on offshore oil platforms and prevent wrong decisions due to the “human factor”</p> 2021-12-22T14:04:44+02:00 Copyright (c) 2021 Masuma Mammadovа, Zarifa Jabrayilova Research on advanced technologies – design and development of cloud computing model 2021-12-22T14:34:13+02:00 Alexandra Briasouli <p>This article is a bibliographic review and focuses on a brief introduction to Cloud Computing as an innovative educational tool. Cloud technology is rapidly spreading in educational institutions, sometimes replacing the in-house infrastructure with cloud services. Education plays an important role in a country’s economy and today, the educational model in many countries has evolved with technology. Schools and universities in the world extensively use cloud Based Technology. Digital teaching – E-Learning and cloud-based technology are the latest models that have been widely adopted in the educational field. The identified trends in the use of cloud computing in education are clear, ranging from the design of cloud-oriented learning environments for future information technology specialists to the training of information technology specialists to enable them to obtain competencies in the use of cloud technologies. Cloud computing is a distributed computing paradigm, where, instead of acquiring information technology products, users access shared resources under various service models through a network, usually the Internet. The application of cloud computing is very broad and growing daily because of many advantages to the users, and is driven by the increasing use of various mobile devices (laptops, tablets and smartphones) and mobile Internet access being more available. The perspectives of its integration in the learning process are highlighted, as well as the factors that make its implementation difficult. Finally, some general conclusions presented on how technologies should be adopted to meet the educational needs of this new global challenge and some suggestions are made for more effective training through the Cloud Computing, as the need for further research emerges</p> 2021-12-22T14:07:06+02:00 Copyright (c) 2021 Alexandra Briasouli Researching a machine learning algorithm for a face recognition system 2021-12-22T14:34:13+02:00 Serhii Yevseiev Anna Goloskokova Olexander Shmatko <p>This article investigated the problem of using machine learning algorithms to recognize and identify a user in a video sequence.</p> <p>The scientific novelty lies in the proposed improved Viola-Jones method, which will allow more efficient and faster recognition of a person's face.</p> <p>The practical value of the results obtained in the work is determined by the possibility of using the proposed method to create systems for human face recognition.</p> <p>A review of existing methods of face recognition, their main characteristics, architecture and features was carried out. Based on the study of methods and algorithms for finding faces in images, the Viola-Jones method, wavelet transform and the method of principal components were chosen. These methods are among the best in terms of the ratio of recognition efficiency and work speed. Possible modifications of the Viola-Jones method are presented.</p> <p>The main contribution presented in this article is an experimental study of the impact of various types of noise and the improvement of company security through the development of a computer system for recognizing and identifying users in a video sequence.</p> <p>During the study, the following tasks were solved:</p> <p>–&nbsp;a model of face recognition is proposed, that is, the system automatically detects a person's face in the image (scanned photos or video materials);</p> <p>–&nbsp;an algorithm for analyzing a face is proposed, that is, a representation of a person's face in the form of 68 modal points;</p> <p>–&nbsp;an algorithm for creating a digital fingerprint of a face, which converts the results of facial analysis into a digital code;</p> <p>–&nbsp;development of a match search module, that is, the module compares the faceprint with the database until a match is found</p> 2021-12-22T14:08:57+02:00 Copyright (c) 2021 Serhii Yevseiev, Anna Goloskokova, Olexander Shmatko Development on advanced technologies – design and development of cloud computing model 2021-12-22T14:34:13+02:00 Alexandra Briasouli Daniela Minkovska Lyudmila Stoyanova <p>Big Data has been created from virtually everything around us at all times. Every digital media interaction generates data, from computer browsing and online retail to iTunes shopping and Facebook likes. This data is captured from multiple sources, with terrifying speed, volume and variety. But in order to extract substantial value from them, one must possess the optimal processing power, the appropriate analysis tools and, of course, the corresponding skills. The range of data collected by businesses today is almost unreal. According to IBM, more than 2.5&nbsp;times four million data bytes generated per year, while the amount of data generated increases at such an astonishing rate that 90&nbsp;% of it has been generated in just the last two years. Big Data have recently attracted substantial interest from both academics and practitioners. Big Data Analytics (BDA) is increasingly becoming a trending practice that many organizations are adopting with the purpose of constructing valuable information from BD. The analytics process, including the deployment and use of BDA tools, is seen by organizations as a tool to improve operational efficiency though it has strategic potential, drive new revenue streams and gain competitive advantages over business rivals. However, there are different types of analytic applications to consider. This paper presents a view of the BD challenges and methods to help to understand the significance of using the Big Data Technologies. This article based on a bibliographic review, on texts published in scientific journals, on relevant research dealing with the big data that have exploded in recent years, as they are increasingly linked to technology</p> 2021-12-22T14:11:14+02:00 Copyright (c) 2021 Alexandra Briasouli, Daniela Minkovska, Lyudmila Stoyanova Development of a model for energy efficiency management of a ship at different stages of its lifecycle 2021-12-22T14:34:13+02:00 Yevgeniy Kalinichenko Oleksandr Shumylo Mykhaylo Kourov <p>The problem of increasing energy efficiency in commercial shipping has been in the focus of attention of many specialists over the past few decades. The adopted and entered into force resolutions of the International Maritime Organization (IMO) require ship-owners to develop and implement energy efficiency management plans. Considerable and increased attention is now being paid to the solution of this problem.</p> <p>However, it has not yet been possible to achieve real practical results – commercial shipping already accounts for more than 3 % of greenhouse gas emissions, and this value is growing from year to year.</p> <p>The reason for this effect is the practically absence of a systematic scientifically grounded approach to the issue. Management of carbon dioxide emissions into the atmosphere is mainly in the operational phase of the ship, although the foundations are laid during the design, construction, modernization and refurbishment phases.</p> <p>This study is aimed at developing a comprehensive model for managing the energy efficiency of a ship throughout the entire life cycle. It is proposed to use the cost of a full cycle and the coefficient of energy efficiency as target functions of the model. A method for solving the problem of two-criterion optimization is proposed. The use of this model will be able to significantly reduce the amount of greenhouse gas emissions</p> 2021-12-22T14:14:02+02:00 Copyright (c) 2021 Yevgeniy Kalinichenko, Oleksandr Shumylo, Mykhaylo Kourov The effect of the filling degree of the tumbling mill chamber on the bifurcation value of the froude number 2021-12-22T14:34:13+02:00 Kateryna Deineka Yurii Naumenko Tamara Myronenko <p>The influence of the filling degree of the drum chamber on the bifurcation value of the Froude number in the case of self-excitation of self-oscillations of a two-fraction granular charge with a minimum swing is considered. Such a pulsating mode of the charge movement is used in the self-oscillating grinding process in a tumbling mill. The coarse fraction that simulated the milling bodies consisted of spherical particles of an incoherent granular material with a relative size in the chamber ψ<em><sub>b</sub></em>=0.00733. The fine fraction, simulating the material to be ground, was cement with a relative particle size ψ<em><sub>m</sub></em>≈0.092∙10<sup>-3</sup>. The value of the adopted analogue of the kinematic viscosity of the two-fraction granular loading approached the value of 10<sup>-3</sup>&nbsp;m<sup>2</sup>/s. The main variable factor in experimental studies was the filling degree of the drum chamber with loading at rest κ<em><sub>b</sub></em>=0.25, 0.35, and 0.45. An additional factor was the degree of filling the gaps between the spherical particles of the coarse fraction with particles of the fine fraction κ<em><sub>b</sub></em>=0, 0.25, 0.5, and 1. The method of visual analysis through the transparent end wall of the chamber of transient processes of the loading behavior with a smooth change and fixation of the velocity was applied. The bifurcation minimum value of the rotation speed was recorded, at which the steady-state circulation mode of the load movement turns into a transient pulsation one with a minimum swing. A decrease in the bifurcation values of the Froude number <em>Fr<sub>b</sub></em> on the cylindrical surface of the chamber with an increase in κ<em><sub>b</sub></em> has been established. An increase in the intensity of the decrease in <em>Fr<sub>b</sub></em> with an increase in κ<em><sub>m</sub></em> was revealed. The recorded effect is due to an increase in the connected properties of a two-fraction loading during self-excitation of self-excited oscillations with an increase in κ<em><sub>b</sub></em> and κ<em><sub>m</sub></em>. The numerical values of the boundaries of the range of bifurcation values of the Froude number for a tumbling mill <em>Fr<sub>b</sub></em>=0.0484–1.17 have been determined. The obtained <em>Fr<sub>b</sub></em> range corresponds to the Reynolds value in the range Re=40–197. The maximum<em> Fr<sub>b</sub></em> value is obtained with coarse grinding. An increase in the likelihood of self-excitation of self-oscillations of the intra-chamber loading with a decrease in the fineness of grinding was revealed</p> 2021-12-22T14:18:48+02:00 Copyright (c) 2021 Kateryna Deineka, Yurii Naumenko, Tamara Myronenko Incoming control parameters for PVC sheets used for the production of plastic cards 2021-12-22T14:34:13+02:00 Olena Nazarenko <p>One of the main requirements for obtaining high-quality raw materials for production is a clear formulation of the necessary parameters that the manufacturer of materials must comply with in the production of raw materials. The very observance of these parameters in the future will reduce the number of production of unsuitable products and plastic cards with defects.</p> <p>Parameter control is carried out for each separate batch of materials. The sample during inspection should be at least 0.1&nbsp;% of the total amount of material, the deviation from the parameters should be included in the tolerance.</p> <p>The tasks of the stage of product quality control should ensure the implementation of the quality policy, as well as the general economic policy of the enterprise. Control is an integral part of the activities of any enterprise, a regulator of factors that form quality at all stages of the production process and ensure the release of quality products.</p> <p>Based on the analysis and experimental studies, the main parameters that need to be monitored were determined: geometric dimensions, color, thickness, density, surface tension, tensile strength, uniformity of paint application, shrinkage during sheet sintering</p> 2021-12-22T14:21:01+02:00 Copyright (c) 2021 Olena Nazarenko Analysis of environmental hazards in the system «children's playground – urbanized area» 2021-12-22T14:34:13+02:00 Veronika Stadnik <p>The article presents the results of the study of environmental pollution by methods of biological indication. The objects of research are children's playgrounds which are influenced by the negative anthropogenic factors. A child's body is more vulnerable to anthropogenic stresses. Car exhaust gases can have a negative impact on the respiratory, cardiovascular, nervous and other systems. Excessive noise pollution not only affects your hearing, but also other organs and systems. In addition, noise can increase stress hormone levels. The aim of the study is to identify the main adverse factors affecting playgrounds in large cities. Despite there are the sanitary standards for the placement of playgrounds in large cities, it was found that about 50&nbsp;% of all playgrounds were located in violation of environmental safety standards. As part of the work, an inventory of children's playgrounds and sports grounds in the cities of Kyiv, Kharkiv and Dnipro was carried out. The author carried out experimental research on some playgrounds using biological indication methods. The method of lichen indication revealed that four out of ten playgrounds in Kharkiv have a high level of air pollution, and two out of ten in Kyiv and Dnipro. This is confirmed by the biotesting method. It was found that one of the methods of solving the problem of excessive anthropogenic load on the objects of study is planting greenery. It is experimentally established that green plantations are able to reduce the level of noise pollution by 4–6&nbsp;dB and absorb pollutants. In addition to reducing the anthropogenic load, the greening of playgrounds has an impact on improving the microclimate of the urban environment, and developing the visual qualities of urbanised landscapes</p> 2021-12-22T14:23:12+02:00 Copyright (c) 2021 Veronika Stadnik