Computer-integrated Technologies Research Articles

Static modelling of qualimetric indicators of universal hydraulic excavators

Abstract. Problem. The analysis of modern methods used by leading world manufacturers in the design of construction and road machines, such as typing, unification, modular design, emphasises the need for their application in the development of domestic machinery. Training in the implementation of modern computer-integrated technologies is an urgent task that needs to be addressed throughout the entire university education, in course and diploma work, and in research activities. It is desirable to create new machines on the basis of technical information about the current state of achievements in the industry and an understanding of the trends in excavator production. The main goal. The aim of the work is to study the regularities in the formation of design parameters of a certain group of construction machines based on the establishment of features inherent in modern excavators of various types and sizes, studying the range of earthmoving equipment manufactured by well-known world companies, obtaining correlation dependencies between the main qualimetric indicators, as well as computer modelling of the design of machines within the established trends. Methodology. It consists in the widespread use of computer-integrated technologies, both in the geometric modelling of the designed components and in the dynamic modelling of functional and technological parameters, which allows us to draw certain conclusions about improving the efficiency of model creation and virtual research. The research was carried out using computer modelling in the Autodesk Inventor software. Results. The article presents the results of studies of prospects and trends in the development of modern excavator construction based on the analysis of qualimetric indicators of machines manufactured by worldfamous firms, companies and corporations, which show that the functional schemes of working equipment are becoming more developed, the number of hinge joints is increasing, which allows expanding the service area. Originality. It consists in the results of statistical modelling of the standard size series of hydraulic construction excavators and obtaining correlation dependencies between the weight and power of excavators based on the analysis of technical characteristics of 11 world-famous manufacturers. Practicalvalue. The main trend in improving the design of excavators is to expand the technological capabilities of hydraulic driven working equipment, the number of which on modern excavators can be 5-8 or even more, which should be taken into account when designing new machines.

Impact of computer-integrated technologies on cybersecurity in the defence sector

Impact of computer-integrated technologies on cybersecurity in the defence sector

Інтегрована система управління віртуальним виробництвом як основа проєктного практикуму підготовки магістрів

At article the integrated control system (ICS) of periodic manufacture, realized in the computerized lab for a design practical work of magisters of a specialty 151 "Automation and the computer-integrated technologies", is considered.

Robotization of Diagnostics of Railway Automation and Communication Systems

Purpose. The study is aimed at: gaining new knowledge about the use of electric motors in robotics; evaluation and selection of motors that are appropriate for use in robots that will move along the railway line and accurately determine the location of damage; development of a method for diagnosing railway automation and communication devices based on robotization of their maintenance and fault finding; evaluation of the use of robotics on the railways of Ukraine and the world. Methodology. The authors analyzed information on the use of electric motors in robotics, as well as the use of robots in production, which they obtained from a review of world literature, monographs, abstract, full-text and lecture databases, and scientific cooperation with leading departments of the University of Twente, the Netherlands. Findings. In the course of the study: 1) the importance of robotics, which makes it possible to replace a person in heavy and long work, was clarified; 2) a functional diagram of the robot, the manipulator drive, its components and the principle of operation was drawn up; 3) various types of drives in robots were substantiated: electric, pneumatic and hydraulic; the use of different types of motors in electric drives, their principle of operation, value and availability; 4) the prospects for the introduction of electroactive polymers and elastic nanotubes that will improve robots in the future are determined; 5) the use of robots in methods of diagnosing and detecting damage to automation and communication systems is proposed, which will facilitate and reduce maintenance time; 6) further development of scientific research and subject area in railway transport is predicted. Originality. For the first time, it is proposed to use robots to find faults in railway automation and communication lines, to introduce the latest drives that allow to improve the work of robots, reduce the number of errors in identifying line defects, and increase the accuracy and efficiency of determining the location of line damage. Practical value. Based on the research results, we can predict the further development of scientific research on robotization of diagnostics of railway automation and communication systems, the subject area of railway transport, and training in the new specialty 174 "Automation, Robotics and Computer-Integrated Technologies".This research can also be useful in organizing scientific and practical seminars, conferences, lectures, advanced training courses, etc.

Особливості створення інтегрованих систем управління виробництвом для навчання

At article the integrated control system (ICS) of periodic manufacture, realized in the computerized lab for a design practical work of bachelors of a specialty 151 "Automation and the computer-integrated technologies", is considered.

A conceptual appraisal towards the contextualization of product and process innovation in clothing manufacturing

Purpose This study aims to address the aspects of product and process innovation strategies and their determining factors to understand their characteristics in clothing manufacturing and contribution for a successful and competitive clothing industry. Design/methodology/approach This general review is based on literature data of previous studies on innovation that transcend and cover the aspects of innovation applicable in the clothing industry. Although the scope of discussion is theoretically broad, it focusses on the context of innovation strategies in clothing manufacturing and the determinant factors indicating the acquisition and implementation of product and process-related innovation activities, simultaneously exploring and linking their implications for adopting, managing and integrating enterprise activities to the values of desired innovation novel models. Findings Based on theoretical background and pragmatic generalizations, product and process innovation strategies in clothing manufacturing firms tend to incline more towards computer-integrated technologies and concepts meant to promote product development, process optimization and organizational integration. Industry, technological and R&D factors tend to significantly determine innovation capability of a clothing firm. Originality/value This review generates integrated conceptual frameworks for product and process innovation strategies applicable in clothing firms and their determinant factors as prelude to empirical validation.

USE OF THE RESULTS OF THE WORK OF THE UKRAINIAN METEOR NETWORK IN THE PROCESS OF TEACHING PHYSICS TO STUDENTS OF THE EDUCATIONAL AND SCIENTIFIC INSTITUTE OF ENERGY, AUTOMATION AND ENERGY SAVING NULES OF UKRAINE

Features of meteor fixation methods are presented by organizing a network of corresponding observation points - permanently operating observation stations located on the territory of Ukraine with appropriate technical and software support for conducting basic and one-way observations of meteors in the radio range of electromagnetic wavelengths. This contributes to solving the strategic problems of meteor research, the structure and evolution of meteor showers and streams, the interaction of meteoroids with the Earth's atmosphere and their chemical composition. Scientific and technical products of observation stations are the results of high-precision basic or one-sided observations of meteors in the radio range of electromagnetic wavelengths, fundamental and applied scientific and technical research. The purpose of the study is to consider the principle of operation of the Ukrainian meteor observation network, a separate meteor hardware and software complex for observing meteors in the radio range of electromagnetic waves using the method of direct scattering on meteor trails of signals from powerful FM radio broadcasting stations with the possibility of further processing and presentation of data by students of specialties 141 "Electric power, electrical engineering and electromechanics", 144 "Thermal power engineering", 174 "Automation, computer-integrated technologies and robotics" of the Educational and Scientific Institute of Energy, Automation and Energy Saving of NULES of Ukraine in the process of studying physics. Processing of experimental data was carried out by students of the specified specialties under the guidance of the author while studying physics. The results of statistical data processing of meteor invasions and their graphic representation by students of the specified specialties in the process of mastering physics are described. Prospects - putting into operation by the end of 2024 the seventh receiving station in the city of Kyiv (student campus of NULES of Ukraine) - the seventh meteor hardware and software complex, as a component of the Ukrainian meteor observation network.

ПОРІВНЯННЯ ЕКСПЕРТНИХ ОЦІНОК КРИТЕРІЇВ ЯКОСТІ ОСВІТНЬОЇ ПРОГРАМИ У ГАЛУЗІ КОМП’ЮТЕРНО-ІНТЕГРОВАНИХ ТЕХНОЛОГІЙ

The article presents the results of comparative expert research to establish the importance of the applied national criteria for the quality of the educational program (CQEP) of higher education institutions (HEIs). For these studies, a group expert assessment of the importance of the CQEP for the educational program (EP) in the field of computer-integrated technologies was applied. The teaching staff of two universities is involved in conducting such an evaluation: The State University of Telecommunications (Ukraine) and the Gheorghe Asachi Technical University of Iași (Romania). To conduct this research, the existing CQEP and their sub-criteria and a special algorithm of group expert evaluation were used. It has been established that the most important CQEP and their sub-criteria include, first of all, CQEP regarding human resources, the educational environment, material resources, and the structure and content of the EP. The greatest spread of experts’ opinions (from the weightiest to the least weighty) can be stated for the sub-criteria of CQEP regarding access to EP and recognition of training results and transparency and publicity. With this in mind, this CQEP sub-criteria requires close attention when revising them for a better balance of the CQEP sub-criteria system. Harmonization of the list of fields of knowledge and specialties for which higher education students are trained with the International Standard Classification of Education, as well as the national terminological and conceptual apparatus with the international one, should be considered extremely appropriate in Ukraine. The issue of prioritizing the preparation of higher educational institutions for the accreditation of the EP, meeting the most essential requirements of the sub-criteria of the CQEP, and taking into account their significant number, remains relevant. This also determines the relevance and necessity of conducting special expert studies on the comparison of the importance of CQEP for different fields of knowledge.

RESEARCH OF THE POSSIBILITIES OF THE C# PROGRAMMING LANGUAGE FOR CREATING CYBERSECURITY ANALYSIS SOFTWARE IN COMPUTER NETWORKS AND COMPUTER-INTEGRATED SYSTEMS

The object of research in the article are the tools and capabilities of the C# programming language for the implementation of cybersecurity analysis software in local computer networks and computer-integrated systems. The relevance of the study is due to the importance of information security of computer and computer-integrated systems in government, military-industrial complex, private business etc., and due to the importance of training cybersecurity professionals in higher education to consider teaching examples in popular programming languages. The goal of the work is to research the possibilities of the C# programming language for the development of software that analyzes cybersecurity in local computer networks and computer-integrated systems. The tasks to be solved are: to develop software for scanning network device ports in computer networks and computer-integrated systems for information security audit, using tools and libraries of the C# programming language, to research the benefits and possibilities of using this programming language for this task. Research methods: theory of computer networks, object-oriented programming, theory of algorithms and data structures, theory of software testing. Conclusions. In this paper the possibilities and advantages of the C# programming language for developing cybersecurity analysis software for computer and computer-integrated systems were explored. In the course of work software that analyzes information security in local computer networks and computer-integrated systems was developed. This software can be used for educational purposes in learning the C# programming language and cybersecurity of computer systems. The developed software has the potential to be further improved and applied in various fields to test the cybersecurity of local computer networks and computer-integrated technologies.

Development of hardware and software support of computer-integrated technology of complex of secondary condensation of ammonia production

The object of research is the technological complex of secondary condensation (TCSC) and the control system of a typical ammonia synthesis unit of the AM-1360 series. The analysis of the conditions of its functioning and hardware and technological design was carried out. The coordinates of the control vector are determined. The features of the proposed functional diagram and the necessary algorithmic software for the computer-integrated control technology of the TCSC with a correction subsystem for decision-making under uncertainty are established. The implementation of the proposed solutions is complicated by the use of the information and control complex TDC-300 (USA) with closed-type software installed on the existing ammonia synthesis units. The need for such a control complex to implement a decision-making subsystem under conditions of uncertainty is shown to supplement the existing control system with hardware and software of an «open» type. A computer-integrated TCSC technology based on a three-level hierarchical structure has been created. The implementation of the zero and first levels of such a structure form single software and hardware complex consisting of a programmable logic controller and an automated operator's workplace based on an industrial computer with installed software. A software implementation of decision-making on the correction of the coordinates of the control vector by additional hardware and software based on the VIPA logic controller and the Zenon SCADA system was made. A scheme of network information flows has been implemented, which illustrates the functioning of the decision-making correction subsystem in the general structure of the TCSC computer-integrated control technology. Implementation of the developed system allows, under the existing uncertainties, to reduce the secondary condensation temperature by an average of 3 °C, which ensures an annual reduction in natural gas consumption by 1 million nm3. The proposed approach to the possibility of combining «open» and «closed» type hardware and software can be applied in other industries.

Design of an intelligent system to control the technological system of ammonia production secondary condensation

This paper has analyzed the functioning conditions for the technological system of secondary condensation (TSSC) in a typical ammonia synthesis unit of the AM-1360 series with the use of a system-control approach. The coordinates of control vectors and external disturbances have been determined. An algorithm has been developed for predicting the coordinates of the control vector for the subsystem of decision support under the conditions of external disturbances for such a complex inertial object with high metal consumption as TSSC. The method of mathematical modeling was used to determine, based on the developed algorithm, the patterns and quantitative dependences of the influence of external disturbances such as the temperature of primary condensation and the flow rate of circulation gas on the efficiency of TSSC heat exchange processes. The regularity of increase in the heat flows and coordinates of control vector with an increase in the temperature of primary condensation has been established. The parametric sensitivity of the coordinates of the control vector under the conditions of change in the temperature of the primary condensation has been determined, which, compared with the circulation gas flow rate, exceeds it by more than six times. The executed software implementation of the algorithm employing the MATLAB programming environment makes it possible, owing to the embedded client part (ORC client), free software access to the current data on the technological process. The functional structure of computer-integrated TSSC technology with the proposed correction subsystem under a supervisory control mode has been designed. Correction solutions involving the additional hardware and software based on the programmable logic controller VIPA and SCADA-system Zenon have been practically implemented. The implementation of the developed system ensures the stabilization of the secondary condensation temperature at the regulatory level of −5 °C, which reduces the consumption of natural gas by almost 1 million nm3 per year.

Сучасні технології професійної іншомовної підготовки у вищій технічній школі

The article dwells upon the deductive opportunities and the analysis of the computer-integrated technologies in the context of professional training in the foreign language in post-secondary technical institutions. The article gives the methods of deductive realization of computer-integrated technologies of professional training in foreign language in post-secondary technical institutions which allowed us to identify and classify them by character, level of cooperation and complexity of application during the learning process. It dissects the main approaches to the organization of professional training in the foreign language during workshops via computer and Internet. It determines the notion of ‘remote learning’, outlines its benefits as for the organization of the learning process, the stages of pedagogical technologies of remote learning (‘professor-student’; ‘professor-students’; ‘learning via Internet’; ‘virtual-training methodology with the application of all forms of remote learning’). The author highlights the positive features .and advantages of considered computer-integrated technologies of the foreign-language training in post-secondary technical institutions. The items of integration into the global community via computer and Internet and pedagogical conditions that ensure the deductive effectiveness of application of modern computer-integrated technologies in the context of the foreign-language training in post-secondary technical institutions are considered in the abstract.

APPLICATION OF IGS GEOGEBRA IN THE STUDY OF HIGHER MATHEMATICS BY STUDENTS OF TECHNICAL INSTITUTIONS OF HIGHER EDUCATION

Introduction. Recently, the use of various packages of computer mathematics systems to improve the efficiency of the educational process has become relevant, especially during distance learning. One of the most promising areas in the technology of higher mathematics is the introduction and development of interactive geometric environments, and, as a consequence, to identify effective ways to use them in the educational process. The use of software is especially relevant in higher mathematics classes. The above software packages help to perform calculations in a short time, allow you to build graphs of functions and three-dimensional bodies and more. Purpose. Possibilities of application of the interactive geometric environment GeoGebra for the purpose of the organization of research activity of students of technical specialties during employment in higher mathematics are considered Methods. The article substantiates the relevance of using the cognitive-visual approach in the process of teaching students of technical specialties of higher mathematics in institution of higher education, considers the essence of this approach, as well as its implementation in teaching higher mathematics using educational software products using interactive geometric environment GeoGebra Results. Possibilities of separate software products of professional and educational purpose are considered, advantages of the interactive geometrical environment GeoGebra are listed, the example of its use in the course of training of higher mathematics of students of technical institution of higher education is given, namely: possibilities of application for the purpose of organization of research activity of students. in particular, remote, and the use of second-order image curves, which allows the visualization of geometric objects under study. Also, the stages of the process of preparation for the application of the interactive geometric environment GeoGebra were identified. Originality. For the first time with students majoring in 151 Automation and Computer-Integrated Technologies, we used distance learning to study one of the problems of solving problems using the interactive geometric environment GeoGebra. Conclusion. Solving our geometric problems, performed using the interactive geometric environment GeoGebra, allows students to see not only the visual construction of geometric objects, but also to form elements of the algorithm for solving practical problems in analytical geometry and lay the foundation for calculation the length of the arc, the area of the figure, the volumes of bodies in parallel section and the body of rotation, the surface area of the body of rotation, which is discussed in the next section "Application of the definite integral". The dynamic capabilities of GeoGebra to study the change in the shape of the projections of the spatial curve when changing the parameters in the equations of surfaces. The use of GeoGebra to solve problems in the course of higher mathematics in technical free economic education increases the motivation and interest of students, creates conditions for the formation of research skills, prepares students for the effective use of ICT in their future careers.

Information Model of the Computer-Integrated Technology for Wireless Monitoring of the State of Microclimate of Industrial Agricultural Greenhouses

Information Model of the Computer-Integrated Technology for Wireless Monitoring of the State of Microclimate of Industrial Agricultural Greenhouses

RESULTS OF DEVELOPMENT AND TESTING OF COMPUTER-INTEGRATED TECHNOLOGY OF GREENHOUSES ARTIFICIAL LIGHTING CONTROL

The development and implementation of the automation and digitalization technologies of growing crops production processes in industrial greenhouses is being actualized for increasing of crop yields. This fact, in turn, positively influences on the re-equipment of the software and hardware base of protected soil domestic agricultural production, which stimulates an increase of investment attractiveness and long-term sustainability of Ukrainian agricultural enterprises. The main purpose of the article is developing of the scientific approaches on creation and testing of computer-integrated technology for artificial lighting control in the protected ground agricultural production conditions. The research object is automatic control process of artificial lighting. The research subject is methods and hardware-software components of the indoor greenhouse microclimate. Research methods are analysis of existing development methods, mathematical and computer modeling, hardware and software experimental testing. In course of the research, the component base has been substantiated and the block diagram of the hardware and software for the control of lighting technology has been developed. As a result, a computer model has been synthesized and tested, which is implemented on microprocessor technology and algorithms of the fuzzy logic theory for control the intensity and spectral composition of LED lamps in greenhouses. The prototype of control system for artificial additional lighting of greenhouse crops has been implemented and experimentally investigated. The implemented hardware and software means of computer-integrated technology allow to automatically control the parameters of LED lamps, taking into account the types and periods of growing crops.

IMPLEMENTING THE FLIPPED CLASSROOM: A CASE STUDY OF TEACHING ESP TO THE BACHELORS IN AUTOMATION AND COMPUTER-INTEGRATED TECHNOLOGIES

The paper describes the experience of flipped classroom application in teaching ESP. The study was held at the National Aviation University and involved 46 undergraduate students majoring in “Automation and Computer-Integrated Technologies”. In-class learning was organized according to the university schedule and out-of-class activities were conducted by using Google Classroom and a set of digital learning tools. Our observations during teaching with their further analysis and a designed questionnaire were used to reveal the benefits and drawbacks of the flipped classroom. The analysis of the students’ responses has shown that it allows students to study at their own pace, meet their needs, develop their organizational, communication and time management skills and increase their independence and creativity. The paper specifies three main phases of the flipped classroom and determines what skills are developed at each of them. Remembering and understanding are developed at the first phase and the freed classroom time is devoted to developing the skills of applying and analyzing. The higher-order thinking skills of evaluating and creating can be formed both in the classroom and during the post-class phase. The authors have selected digital learning tools which can be recommended for learning ESP in order to facilitate students’ out-of-class activities. Their use can help to shift the emphasis from the teacher to the student, increase students’ engagement in learning and make the course versatile and appropriate to students’ needs. A student survey was conducted at the end of the academic year, and the analysis of students’ responses revealed that they had a positive attitude to implementing the flipped classroom in teaching ESP. As shown by the results of the study, the use of the flipped classroom for teaching ESP is effective as it saves much in-class time for communicative tasks enhancing the development of higher-order thinking skills, unites in-class and out-of-class learning, controls students’ achievement not only in the classroom but outside it and makes the learning process more engaging.

Requirements for the content and training of PhD in the specialty of automation and computer-integrated technologies

The aim of the article is to disclose the requirements for the content and training of PhDs in the specialty 151 Automation and computer-integrated technologies, the implementation of which will contribute to the successful accreditation of educational and scientific programs of other specialties of higher educational institutions in Ukraine. Research Methods: The study involved the analysis of the regulatory framework of documents for the training of doctors of philosophy, standards of higher education, scientific and methodological literature, educational and scientific programs of higher educational institutions. The results of the study consist in highlighting the main aspects that should be taken into account for the successful accreditation of educational and scientific programs.

Modeling of the scheme of location of active raining equipment of the closed irrigation system

The purpose of the study is to develop a procedure for determining the parameters of the layout of active sprinkler equipment in closed irrigation systems. This paper presents the importance of transforming agricultural production into a highly developed sector of the economy which is impossible without reducing its dependence on adverse climatic conditions. The introduction of modern computer-integrated technologies, including precision farming, due to the need for economic use of visible and energy resources, is considered. Closed irrigation systems with the use of reclamation equipment such as universal sprinklers have become widespread. The existing fleet of efficient sprinklers will consist of 64% of frigate sprinklers. The article considers a complex of sprinklers, which will consist of eight irrigation fields, the total number of sprinklers in the system is eight. The article discusses in detail the principle of operation of the presented closed irrigation system, namely the system of water supply pipelines to sprinklers, and equipment that controls the operation of this system, such as booster pumps, hydrants, transformers, valves, communication lines. The article considers the process of calculating the total number of options for connecting sprinklers. In the considered system 4 sprinkler installations which are connected and disconnected in pairs can be in work at the same time. Consider problems that arise in the system due to pressure jumps in the hydraulic system. Schematically, the options for placing active sprinkler equipment are presented. The possibility of specifying the structure of the connection scheme of active sprinkler equipment using a matrix is considered. The procedure of definition of parameters of the scheme of placement of the active sprinkler equipment is offered. Timely switching of modes of operation of the pumping equipment of ZSS, is possible in the presence of correctly working control system, the confirmed efficiency. The work must be based on the results of computer simulations.

CONCEPTUALIZATION OF THE PARADIGM "INTEGRATED TECHNOLOGIES AS A GLOBAL TREND IN THE DEVELOPMENT OF SHIPPING SAFETY OF AN INNOVATIVE SOCIETY"

The evolution of computer-integrated technologies as a global trend in developing the safety to navigation of the innovative society is presented. Computer integrated technologies contributed to the development of computer intelligence determined by the paradigm of information technology, which contributed to the formation of computer integrated navigation systems. It is revealed that a global phenomenon that is communicative in its scope organized according to the principle of an integration system, giving rise to the phenomenon of a control system. The emergence of a new global solution to navigation safety was facilitated by the emergence of a new form of a navigation system is a computer integrated navigation system. It is concluded that the new navigation system, which is led by integration today, is the key to safe navigation driven by computer-integrated technologies. Computer-integrated technologies are the source of reliability, security, and manageability in the age of innovation.

The dual form of education is an embodied reality

The organizational principles and results of the implementation of the pilot project of dual form of education for applicants for the second (master's) level of higher education in the specialty 151 "Automation and computer-integrated technologies" are considered. A brief retrospective look at the history of dual education is given. A comparative analysis of the institutional, individual and dual forms of education according to the most popular professional competencies in the modern labor market is given.
 Recommendations of the Working Group of the Ministry of Education and Science of Ukraine on the organization of dual education, the procedure for enrollment of students in dual education, the peculiarities of the implementation of this form of education. The enterprises that took part in the pilot project on the basis of the memorandum of cooperation are identified. The results of a pilot project on the organization and implementation of the dual form of education at the Kharkiv National University of Construction and Architecture are presented.
 For the practical implementation of the dual form of education, an integrated model was chosen – a model of a divided week, which provides for training two days a week in an educational institution, three days – in the workplace at the enterprise.
 The step-by-step algorithm of introduction of dual education is offered, practically worked out during realization of the pilot project, components of efficiency of such form of receiving education are defined.
 The connection of the pilot project with the Licensing conditions for the educational activities of educational institutions in terms of recognition of the qualifications of research and teaching staff in the relevant specialty is shown. It is proposed to use the experience of the pilot project for other technical specialties.