Technology audit and production reserves 2022-11-25T01:21:51+02:00 Liliia Frolova Open Journal Systems <p align="justify"><strong>The aim</strong> of the «Technology audit and production reserves» journal is to publish research papers dealing with the search for opportunities to reduce costs and improve the competitiveness of products in industry. The peculiarity is that <strong>each problem is considered from two sides - the economist’s and the engineer’s</strong>, for example, in the context of forming the «price – quality» criterion, in which the first component concerns research in the field of business economics, and the second - engineering. The research result at the intersection of these disciplines can be used in the actual production to identify reserves, providing the opportunity to reduce costs and improve product competitiveness.</p> Development of an axonometric model of photoelastic interaction in an acousto-optic delay line and its approbation 2022-11-25T01:21:51+02:00 Afig Hasanov Ruslan Hasanov Asad Rustamov Elgun Agayev Vugar Eynullayev Rovshan Ahmadov Masud Sadikhov <p><em>The object of research is a mathematical model of the photoelastic interaction in an acousto-optic delay line (AODL). </em><em>Two possible cases are discussed as applied to the ratio of the input pulse duration to the time of crossing the optical beam by an elastic wave packet. It is shown that in both cases the voltage at the output of the device is found as the sum of three components, which are formed by different mechanisms. If the duration of the input pulse is longer than the time of crossing the optical beam by an elastic wave packet, then the first component is determined by the process of entry of the leading edge of the elastic wave packet into the optical beam, the second – by the process of complete interaction of the optical beam with the elastic wave packet, and the third – by the process of exit of the trailing edge of the elastic wave packet from the optical beam. In the second case, i. e. when the duration of the input pulse is less than the time of crossing the optical beam by an elastic wave packet, the first term is determined by the process of entry of the elastic wave packet into the optical beam, the second – by the process of advancing the elastic wave packet in the aperture of the optical beam, and the third – by the process of exit of the elastic wave packet from the aperture of the optical beam. The corresponding equations for calculating the parameters of the output pulse were obtained by applying a rectangular pulse to the AODL input. It is proved that if the pulse duration at the AODL input is longer than the time of intersection of the optical beam by an elastic wave packet, then the pulse duration at its output will be equal to the duration of the input pulse. In the case when the duration of the input pulse is less than the time of crossing the optical beam by an elastic wave packet, the duration of the output pulse will be determined by the time of propagation of the elastic wave packet in the aperture of the optical beam. The obtained equations are confirmed by numerical calculations. The results of the numerical analysis were tested experimentally, which confirms the unequivocal adequacy of the proposed model of photoelastic interaction in an AODL.</em></p> 2022-11-25T00:00:00+02:00 Copyright (c) 2022 Afig Hasanov, Ruslan Hasanov, Asad Rustamov, Vugar Eynullayev, Rovshan Ahmadov, Masud Sadikhov Research of possibilities of default refactoring actions in Swift language 2022-10-21T14:23:34+03:00 Andrii Tkachuk Bogdan Bulakh <p><em>The object of research in the paper is a built-in refactoring mechanism in the Swift programming language. Swift has gained a lot of popularity recently, which is why there are many new challenges associated with the need to support and modify the source code written in this programming language. The problem is that the more powerful refactoring mechanism that can be applied to Swift is proprietary and cannot be used by other software. Moreover, even closed-source refactoring software tools are not capable of performing more complex queries.</em></p> <p><em>To explore the possibilities of expanding the built-in refactoring, it is suggested to investigate the software implementation of the sourcekit component of the Swift programming language, which is responsible for working with «raw» source code, and to implement new refactoring action in practice. To implement the research plan, one refactoring activity that was not present in the refactoring utilities (adding an implementation of the Equatable protocol) was chosen. Its implementation was developed using the components and resources provided within the sourcekit component. To check the correctness and compliance with the development conditions, several tests were created and conducted.</em></p> <p><em>It has been discovered that both refactoring mechanisms supported by the Swift programming language have a limited context and a limited scope and application. That is why the possibility of expanding the functionality should not be based on the local level of code processing, but on the upper level, where it is possible to combine several source files, which often happens in projects. The work was directed to the development of the own refactoring action to analyze and obtain a perfect representation of the advantages and disadvantages of the existing component. As a result, a new approach to refactoring was proposed, which will allow solving the problems described above.</em></p> 2022-10-24T00:00:00+03:00 Copyright (c) 2022 Andrii Tkachuk, Bogdan Bulakh Application of the associative recovery method in the challenges of increase informativity of distorted images and detection of minor changes in stored samples 2022-10-31T23:02:03+02:00 Olena Husak <p><em>The object of research is optical-electronic methods and related digital information processing. One of the most problematic areas is the reconstruction of missing parts of the stored data and the inability to detect minor changes in the stored samples, as well as the reconstruction of the entire corrected template from its incomplete version.</em></p> <p><em>As part of the study, a correlation-optical approach to the problem of holographic associative memory was used, which made it possible to achieve highly efficient heteroassociative reconstruction of the entire corrected template from its incomplete version.</em> <em>The analysis of hologram models with phantom images and nonlinearly recorded holograms read in the associative mode shows a wide range of useful possibilities. It is primed not only in the tasks of reconstruction of data, but also in the case of insignificant changes in savings, highly effective heteroassociative reconstruction based on a non-interference mechanism.</em> <em>The analysis of the results of the correlation-optical approach to the problem of holographic associative memory shows that the described</em><em> method opens up additional opportunities for solving the problems of detecting small changes in the object scene, which is important, in particular, for early registration of events and phenomena. It is related to the fact that the detection and localization of changes is carried out according to the difference in intensity across the image field (the effect of brightness inversion in the phantom image of referenceless hologram): the brightness of the image of the changed area is higher, and to a greater extent, the smaller the changes compared to the reference image. It should be especially noted that the specified properties of the nonlinear-holographic associative memory are realized not algorithmically, but physically, taking into account the fundamental nonlinearity of all natural processes, which is neglected when conducting a superficial (in the first approximation) analysis. Physical modeling of associative memory based on second-order holograms does not involve any circuit complications compared to the standard holographic procedure.</em></p> 2022-10-31T00:00:00+02:00 Copyright (c) 2022 Olena Husak Exploring ML-based classification system for digital learning platforms: a mapping technique of massive open online courses 2022-11-17T18:01:21+02:00 Ayse Kok Arslan <p><em>The object of research is massive open online courses. One of the most problematic areas in online learning is how to improve the quality assurance of digital learning systems. Analysis and classification of massive open online courses is a difficult task, given the variability of massive open online courses structures, contents, designs, platforms, providers, and learner profiles. To overcome this challenge, this study aims to propose an automatic and large-scale machine learning based classification system for massive open online courses according to their learning objectives by making use of the six cognitive levels of Bloom’s taxonomy. During the course of the research, it is shown that analyzing learning objectives associated with modules and programs can further enhance the quality of digital learning system. As a result of the research, a representation and a detailed analysis of the dataset for experimentation with the different models are provided. Further research can focus on the privacy implications of the current control on developments of artificial intelligence taking into account creativity, and innovation which can hardly be performed by machines.</em></p> 2022-11-18T00:00:00+02:00 Copyright (c) 2022 Ayse Kok Arslan Development of force distribution methodology and means of communication for the grouping of troops (forces) in operations 2022-09-12T18:22:51+03:00 Oleg Sova Yurii Zhuravskyi Andrii Shyshatskyi Oleksandr Zhuk Taras Hurskyi Oleksii Nalapko Roman Vozniak Serhiy Hatsenko Anna Lyashenko Oksana Havryliuk <p><em>The most characteristic features of the construction of communication systems of groups of troops (forces) during the conduct of hostilities (operations) are a high degree of a priori uncertainty regarding the operational situation and a small amount of initial data for communication planning. In such conditions, it is important to correctly choose the apparatus for evaluating the made management decisions, which will allow the officials of the bodies (points) of the control system of the communication system of the groups of troops (forces) to be confident in the decisions being made. That’s why the issue of increasing the efficiency of the distribution of forces and devices of communication of groups of troops (forces) in the course of operations is an important issue. The object of the research is the communication system of the group of troops (forces). The subject of the study is the effectiveness of the communication system of the group of troops (forces) in accordance with the purpose of the operation. In the research, the method for the distribution of forces and devices of communication of groupings of troops (forces) in operations was developed. The novelty of the proposed method consists in taking into account the type of uncertainty regarding the operational situation in the operational space. As well as taking into account the number of members of the group (users of communication services) of troops (forces) in operations. Also, the novelty of the developed method consists in taking into account the duration of the operation (fighting) and the calculation of the labor costs necessary to meet the needs of the communication services of groups of troops (forces) while planning measures for the distribution and use of forces and radio communication devices. The specified method is proposed to be implemented:</em></p> <p><em>– in planning documents during planning of the deployment and operation of forces and radio communication devices;</em></p> <p><em>– in the software, during operational management of the communication system of troop groups.</em></p> 2022-09-23T00:00:00+03:00 Copyright (c) 2022 Oleg Sova, Yurii Zhuravskyi, Andrii Shyshatskyi, Oleksandr Zhuk, Taras Hurskyi, Oleksii Nalapko, Roman Vozniak, Serhiy Hatsenko, Anna Lyashenko, Oksana Havryliuk Descriptors of sound insulation of building structures in residential buildings in Ukraine and Europe 2022-10-18T02:03:11+03:00 Dmytro Bida Vitalii Didkovskyi <p><em>The object of the research is the descriptors (indices/parameters) of sound insulation of construction structures of residential buildings.</em></p> <p><em>The work presents a brief overview of modern generally accepted construction technologies in Eastern Europe. The most common sources of noise and the consequences of their impact on people's health and life have been studied. An analysis of the levels of airborne sound insulation indicators of building structures in European countries and Ukraine was carried out. Partitions for standard types of housing (private houses, townhouses, multi-story residential buildings) are considered. As a result, a great diversity of sound insulation requirements in different European countries was shown. And this leads to an imbalance and worsens the quality of connections in the construction sector, due to possible confusion and can cause certain problems in trade and exchange of experience. It is also shown that the difference between the numerical indicators of the sound insulation levels of air noise is not entirely appropriate within the EU, since the subjective indicators of the sound insulation of the population have approximately the same data. Comfortable conditions for people from different countries should be the same. Examples of descriptors of air noise sound insulation indicators of 35 European countries are given. Numerical norms of sound insulation levels of EU countries are detailed. General characteristics and differences between states are highlighted.</em></p> <p>The paper also examines the diversity of housing types and the relationship between detached, semi-detached (terrace/terraced) and multi-apartment buildings in many countries. This allows for some approximations to calculate the number of neighbors in these countries with adjoining walls and floors in attached housing. Having data on European countries, a conclusion was made with similar characteristics used in Ukraine. On the basis of the obtained data, the strengths and weaknesses of the Ukrainian noise protection regulations were determined, which consist in a small variety of modern types of housing, taken into account in the building regulations, and in a relatively low general level of requirements for sound insulation of building structures. Finally, the quality of life aspect of building occupants and the importance of good design, construction and control are discussed. We hope that the work gained will be used to achieve the goal of creating European-level housing. The already mentioned topic will be of interest to noise and sound insulation specialists, acoustic engineers, ecologists, urban planners and city planners.</p> 2022-10-18T00:00:00+03:00 Copyright (c) 2022 Dmytro Bida, Vitalii Didkovskyi Justification of approaches to development of the standard civil society organization based on international experience 2022-11-21T18:38:33+02:00 Kateryna Pylypko Leonora Adamchuk Artem Antoniv Sedat Sevin <p><em>The object of the research is the principles of the quality management system and the interaction of different approaches to the quality assessment of civil society organizations (CSOs). In many countries, regulatory documents have not been developed regarding the quality management of the CSO activities. Let’s consider this problem using the example of Ukraine, since there has been an increase in the number of public associations by more than 85,000 during the last decade. Along with it, the principles of implementing DSTU ISO 9001:2015 for non-commercial, in particular civil organizations, are not sufficiently clear, given the various socio-cultural and economic prerequisites.</em></p> <p><em>Based on theoretical and analytical methods, it is proposed to conduct an in-depth analysis of the problem and further justification of the implementation of the practice of compliance with Quality Standards and good governance in civil society organizations. That is primarily due to the desire of CSOs themselves to self-organize, reinforced by the need to establish partnership relations with state authorities and commercial organizations, which is accompanied by the fulfillment of requirements for transparency, accountability, and effectiveness of CSOs activities. Adherence to Quality Standards forms a commitment on the part of CSOs to generally accepted ethical principles and standards of behavior, which further contributes to the achievement of social legitimacy.</em></p> <p><em>Based on the analyzed regulatory and technical documentation, the need to develop a Quality Standard of Ukraine for CSOs based on the complementarity of different approaches to evaluating the quality of organizations according to the «Quality Standard of CSOs» and DSTU ISO 9001:2015 is substantiated.</em></p> <p><em>The results of the analysis of registered public associations by organizational and legal forms in Ukraine confirm the tendency to increase their number, which is a prerequisite for the implementation of the international experience of using the CSO Quality Standard. Taking into account the results of a comparative assessment of the principles of the CSO Quality Standard and DSTU ISO 9001:2015, wit is possible to state that there are no differences in the main approaches to managing the quality system of organizations. The governance aspects of the Modified Organizational Capacity Assessment Tool are similar to those of the «Quality Standard of CSOs», based on the subcategories: authorities; values, vision, and mission of the organization; management style and leadership; strategic planning.</em></p> 2022-10-31T00:00:00+02:00 Copyright (c) 2022 Kateryna Pylypko, Leonora Adamchuk, Artem Antoniv, Sedat Sevin