Table of Contents

  • Modeling and simulation of circulating fluidized bed biomass gasifiers in view of Industry 4.0

    pg(s) 150-152

    Cyber-physical systems are structures that are controlled and monitored by computer-based algorithms consisting of physical components. The energy industry is becoming a large and complex cyber physical system with the industrial revolution. These developments in the energy sector have a positive effect on Industry 4.0. Developments in the fields of production, transmission and distribution, retail sales, trade and consumption from the elements of the energy sector are increasing day by day via sensor-based communicable autonomous systems. U.N. Industrial Revolution in its report in 2017 elaborate the relevancy between the Sustainable Development Goals no. 7 and 9 about sustainable energy and inclusive industry development that Industry 4.0 and sustainable energy transition share crucial concerns that can be interconnected to pursue a sustainable energy transition. Sustainable energy is defined to have two main components: energy efficiency and renewable energy. UNIDO’s initial hypothesis tells that a comprehensive shift in manufacturing may change the behavior in energy consumption, including energy efficiency and renewable energy usage. Circulating fluidized bed (CFB) technology is one of the important factors contributing to the above mentioned concept of sustainable energy.

  • Industry 4.0 competencies’ gap analysis

    pg(s) 153-156

    Because of emergence of Industry 4.0, the manufacturing systems are becoming extremely complex and, despite increasing IT support, they need a new generation of professionals with competences ranging from basic manufacturing processes to information technologies. Worldwide academia is adapting existing courses and is introducing new courses and study programmes to prepare university graduates to face the challenges of Industry 4.0. Such an endeavour is the Erasmus+ project MSIE 4.0 that unites universities from Thailand, Portugal, Poland and Romania. First project’s aim was to determine the real needs for specific competences, by analysing the curricula from several universities. Also, it was organised a survey on needed competences with industrial organisations and students from industrial engineering programmes. Based on the results obtained in these activities, an analysis was performed in order to determine the gap between the required and the actual sets of competences. The results obtained in Romania are presented in this paper.

  • Modeling of the natural environment through geographic information systems

    pg(s) 157-160

    It is anticipated that the potential benefits of GIS in environmental assessment will continue to increase. Environmental studies are related to the implementation of monitoring and modeling activities that require the use of reliable databases and validated technologies. For these purposes, conventional terrestrial measurements and methods continue to apply, but geographic information systems (GIS) and remote sensing are increasingly used.

  • Occurrence channel of leakage of the acoustic due to the modulation of the visible light

    pg(s) 161-163

    The development of microelectronics forms new channels of confidential information leakage. The transmission of acoustic information by digitally modulating the light output of LEDs has now become physically realizable. Theoretical calculations showed a high potential sensitivity of MEMS microphones. The combined use of digital MEMS microphones and LED room lighting controllers allows you to transmit a digital data stream of 40 800 Bits / s over 100 meters with minimal signal-to-noise ratios. Conducted research reveals a new information leakage channel and describes its characteristics, which will make it possible to develop administrative and technical

  • Multi-criteria optimization of tracked vehicle transmissions

    pg(s) 164-166

    The article is devoted to the problem of computer modeling of rational design of tracked vehicle transmissions with multiple criteria. The problems of finding optimal geometric parameters that satisfy several quality criteria. All the complexity of the layout and the relationship of the parameters make difficult their choice, which is simplified when using approaches of mathematical optimization. Using the famous pseudo-random method LPτ-search with the author’s modification made it possible to avoid problems associated with the discreteness and the number of parameters. The main optimization criteria for transmission are minimum center distance, minimum length, minimum mass, and maximum uptime probability. To solve this problem, the problem was formulated and design parameters with constraints were specified, criteria were recorded and a transformation from multicriteria to a single criterion was proposed. The approach is based on analysis of test points that obtained using LPτ-search, and further processing of the information received. The approach of transformation from many criteria to one is proposed by introducing the scale of importance by the designer and assigning the importance of each of the criteria, finding the desired solution for each trial point of relative offset, which is proposed to be used as a unifying criterion. Basic schemes and flowcharts of the algorithm elements are provided. The implementation of the computer model was carried out in the Delphi 7 environment.

  • Creating a 3D model of dental splint for bruxism

    pg(s) 167-170

    The present study examines the possibilities of applying modern technologies in the field of dental science and specifically in the treatment of bruxism. Based on an optimized methodology, a prototype, and digital and real dental splint models have been developed using biocompatible material and specialized equipment including a 3D scanner and a 3D printer. The details of the production of the models are precisely designed, taking into consideration the medical and technical requirements.

  • Automated software testing framework “Stаssy”

    pg(s) 171-174

    Over the last two decades, software testing has expanded in terms of both the tools used to perform different types of activities and mind-set of the people using those tools. Automated testing involves use of strategies and instruments that perform testing activities of a software product and where the interference of a person is mainly related to the research of the results of these activities. Automated testing processes are popular because of the benefits that make them an indispensable tool in everyday work for testing activities. The main advantage of automation is the abstraction of rehearsal processes within the tested system. In this way, a complete separation of the human operations from the system is achieved, as only the functionality that needs to be programmed. This article presents the development of an automation-based testing framework “Stassy” – System Stable Testing, which supports and helps to implement easily new tests related to Web platforms. The implementation includes the following structure: Object repository, Functional libraries, Global variables and Constants, Data Provider, Test scripts, Configuration files, Recovery scenarios, Loggers, Clean-up scripts and Reporting mechanism. With the advantages of Page Object Pattern and using of the following technologies: Java programming language, JUnit and TestNG extended libraries. The created scripts represent automated acceptance, functional and non-functional tests in which Page Object is used to separate those tests into individual fragments and subsequently call them in a different order according to the automation requirements and business logic. We will track the overall preparation and creation of “Stassy” automated framework and explain the benefits of such approach.

  • Super inkjet technology machine development for additive 3D manufacturing

    pg(s) 175-178

    The novel approach of fully digital and maskless manufacturing of electronic devices requires new technology set for electronic device manufacturing. These demands can be achieved by designing of technology equipment that can support such concept at technology level as well as on hardware and software levels.
    One of the promising technology is the Electrodynamic coating that can perfume nanomaterials deposition to create structures for printed 3D electronics devices.

  • Analysis of the smart grid concept for dc power supply systems

    pg(s) 179-193

    The Smart Grid network system is a concept of a fully integrated, self-regulating and renewable power system with a network topology and includes all generating sources, main and distribution networks and all types of electrical energy consumers controlled by a single network of information and control devices and systems in real of time. The article proposes the introduction of the Smart Grid concept into the traction power supply systems, an analysis of the necessary steps to upgrade the traction substations, and the boundaries of the energy-saving effect from its implementation.

  • The ambient temperature influence on deaerator exergy efficiency and exergy losses

    pg(s) 183-186

    The exergy analysis of deaerator at three different steam power plant loads is performed in this paper. Also, the influence of the ambient temperature change on deaerator exergy efficiency and losses is analyzed. From the exergy viewpoint, deaerator operation shows the best characteristics at middle and high power plant loads. The lowest deaerator exergy destruction of 363.94 kW and the highest exergy efficiency of 93.27 % will be obtained at middle power plant load and at the ambient temperature of 5 °C. The highest deaerator exergy destruction of 1349.99 kW and the lowest exergy efficiency of 81.83 % will be obtained at low power plant load and at the ambient temperature of 45 °C. Deaerator operation is preferable at the lowest possible ambient temperature, regardless of the current power plant load.

  • Analysis of cross-country differentiation of conformity of wages and level of education

    pg(s) 187-190

    The early 21st century introduced a new market paradigm: a high level of education of the employed should ensure high productivity and correspond to a high level of wages. Countries with developed economies provide promising opportunities for education, but efficiency of human resources use is still different. Differentiation in the correlation between labor productivity and wages in the “high income” and “upper-middle income” countries is a fairly high. The efficiency improvement of national economies should be based on the diversification of the sectoral structures based on technologies that would replace labor with capital, ensure high wages and the demand for a sufficiently high level of education of employees.

  • Green building training through web modules – exchange of good practices

    pg(s) 191-194

    Achieving EU objectives for the efficient use of natural resources leads to the use of new materials, techniques, norms and standards in the construction sector that require the acquisition of new skills and competencies of employees in the sector. The main task in this study is in line with the EU Skills Program for Europe, 10.06.2016, and in particular the Green Skills Program. The lack of green skills in the professions in the construction sector is already present and, unfortunately, traditional educational institutions cannot meet this demand. The report considers the possibility of creating within the Erasmus+ project an educational product of 4 interactive multimedia modules to improve the green skills and skills of workers in the construction sector.

  • Massive open online course “CS50 introduction to computer science” by Harvard university implementation into Ukrainian educational process

    pg(s) 195-197

    Nowadays online learning is among the most progressive and most popular educational practices in the world. Both European and United States universities try to implement this way of learning into the educational process. Further development and popularity, the continued blended learning implementation in Ukrainian higher education institutions, requires high-quality new online courses in various fields of knowledge, adaptations and translations of existing courses for the further leading teaching methodologies used in the educational process. Among the best courses in the world for teaching and learning computer science’s basics is “CS50 Introduction to Computer Science” by Harvard University and professor David J. Malan. This course was translated in Ukrainian and introduces in the blended format in top-rated Ukrainian higher educational facilities. The comprehensive analysis makes possible further blended learning implementation in the technical educational process in Ukraine.

  • Professional-cognitive interests – a way of support

    pg(s) 198-199

    They speak about a variety of children’s phenomena in the recent years – crystal, indigo children, etc. This data brings number of challenges before the professional preparation of the future teachers. Alongside, the children with Special Educational Needs /SEN/, children with intellectual potential within the norms of their age and ones that are talented also present in the educational environment. These features of educational environment put the teacher’s role at a different level – of creator and mediator.