Table of Contents

  • Analysis of topologies of active four-quadrant rectifiers for implementing the Industry 4.0 principles in traffic power supply systems

    pg(s) 106-109

    Implementation of the principles of “INDUSTRY 4.0” into the traction power supply systems implies the introduction of power factor correction modes and the possibility of bi-directional energy transfer in the DC traction substations used on railways and subways. The article provides an overview and comparison of active rectifier circuits, which allow to realize power factor correction and eliminate the higher harmonics of the input current. A number of requirements are presented, on the basis of which the optimal scheme for the rectifier of the traction substation was chosen.

  • Methods of generating design solutions for CAD electronic products based on a single digital passport

    pg(s) 110-112

    In this paper are considered various options for the interaction stages of the life cycle of an electronic product, initiated by the application for the development or supply of products, reclamation act or application for service. At the same time, variations of procedures and product data are formed, which form a digital passport and are used to generate several types of design solutions. It is shown that the content of a digital passport allows you to automate the procedure for obtaining design solutions, for which an appropriate methodology has been developed.

  • Pencil drawn sensor for application in smart boxes for Industry 4.0

    pg(s) 113-115

    In this article, we present an idea for enhancing functionality of ordinary cardboard boxes for Industry 4.0. The simple sheet of paper and pencil were used for making an environmentally friendly sensor. By using simple technology and adhesive tape a system for opening detection was made. Emphasis was put on using off-the-shelf items; thus, everyone can replicate such sensor.

  • Implementation of INS for control of robots with a DC motor

    pg(s) 116-119

    This paper describes the activity system and the importance of INS with the possibility of implementation to the robot control. The contribution also introduces the execution of DC motor regulation utilized for the positioning of a rotary positioned arm. The motor control comprises the current regulation, angular velocity and the rotation of the motor shaft fixed to the arm regarding the required angular change course of the arm rotation. The regulation structure of the DC motor is carried out in MATLAB/Simulink program. The arm movement is investigated via the mathematical model and virtual dynamic model formed in MSC.ADAMS program.

  • Oxidative modified activated carbons as materials for purification of water contaminated with Tl

    pg(s) 120-123

    Among the methods for the contaminated water treatment for removing heavy metal ions, including those of T1, the most widely used are the adsorption methods, and among the sorbents used, the different types of carbon materials. The analysis of the metal ion sorption mechanisms from aqueous solutions of carbon materials shows the essential role of surface oxygen groups present in all carbon materials (commercial products) for the sorption process. In the presented publication, the possibility was investigated through liquid phase oxidation with nitric acid to prepare oxidized carbon materials which differ both in the parameters of the adsorption texture and the content of surface oxygen groups on the carbon surface. The efficiency of the modified samples prepared by liquid phase oxidation for Tl ions sorption from aqueous medium was investigated by adsorption process. Increased sorption possibilities were observed towards Tl ions as compared to initial carbon materials.

  • The hyper-personalized supply chains

    pg(s) 124-127

    Today’s customer has more choices than ever. Customers always have had high expectations about what is in the items they buy. This desire for clarity has heightened the need for supply chains to provide more, and more granular, content. To succeed in today’s business environment, companies need to meet consumer demand for in-depth product information across a variety of shopping channels, with greater specificity, than in the past. Excellence in business is driven by consistent information. Today technology and innovation enable a much closer connection between the buyer and seller, paving new paths for experience and sales. Using them to build the hyperpersonalized supply chain that delivers exactly what the customer wants, when, where and how they want it will become the paradigm of modern supply chain management. Personalization (creating a progressively better customer experience by using technology and data to meet and anticipate its needs in a way that makes their interactions easier) is a growing challenge, particularly for supply chains strongly influenced by global competitors. Personalization is fueled by new technologies and new data sources, all leading to more impactful customers insights. In this paper we will examine how personalization today is not only a strategic imperative for companies, but also for their supply chain partners in order to reach better profitability and increased customer lifetime value.

  • Finding anomalies with artificial neural network

    pg(s) 128-129

    Nowadays all companies and corporations have their own external and internal servers with information that require specialized software for their support and configuration. Sometimes when data is exchanged with other external or internal sources for unwanted reasons data traffic may be different than expected. In this case, artificial neural networks may be used to monitor the traction. Thanks to their ability to learn the artificial neural networks can detect an anomaly in communication traffic.

  • Increasing transport efficiency by using wireless transmissions

    pg(s) 130-133

    The main subject of this article is description of an actual two realizations of the connection between trucks and centre using GPS and GPRS and WI-FI technologies in Slovak companies. There are described advantages of the freight cars connection using wireless technologies, as advanced trends of wireless technologies using in the road transportation. There are described basic concept of wireless technologies GPS and GPRS and possibilities of using these nets in a road transport for Fleet tracking and realization of the connection between trucks and centre using WI-FI technologies.

  • Taxation and tax transformations to the digital economy conditions

    pg(s) 134-137

    The tax aspect of “digital economy” is addressed in the article, which is particularly relevant now searching for a source of economic growth and taxable base. The main prerequisites to develop the digital economy in the modern Russian economy are highlighted based on the experience analysis of international companies and new decentralized payment systems and their role in the digital economy. There is a low responsiveness of changes in the tax legislation in the current conditions of globalization. A new vector of the tax system for a structural change in the development of the digital economy in Russia is requested to identify.

  • Industry 4.0 competencies’ gap analysis

    pg(s) 138-141

    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.

  • 21st century language classroom with digital tools and resources

    pg(s) 142-145

    This paper discusses the importance of implementing alternative teaching and learning methods of instruction in the 21st century FL classroom. The focus is on integrating specific digital tools and resources in teaching English by „English through Literature Approach‟. The aim is to foster students‟ skills to interpret texts from British and American literary canon not only through traditional medium of instruction, but also technology-rich instruction regardless of time, place and electronic devices. An attempt will be made to summarise and evaluate the teaching methods, taking into account an online survey conducted with twelfth-grade students after a two-year experiment.

  • Bistable relay computer BRC44 for education in digital technologies

    pg(s) 146-149

    The contemporary high-efficiency education in the sphere of digital technologies requires the employment of such demonstration methods and tools, which enable visual representation and illustration of the computer technologies in an attractive and accessible form. The aim is to let the learners, even if unprepared in the basic scientific and technological areas – physics, mathematics, informatics, electrical and electronic engineering, etc., easily to understand the working principle of the digital computer.
    The goal of this development, the subject of the current material, is the creation of a digital computer, realized using bistable relays (BRC44). The application is with the education of students and pupils in universities and schools in the educational subjects: informatics, computer science, information technologies, electronics, and physics.
    The BRC44 computer is a 4-bit computer with 4-bit data bus to the ROM memory. The employed architecture is of the Harvard type. The computer uses only bistable relays as active electronic elements without the implementation of monostable relays, vacuum electronic tubes, transistors and integrated circuits.
    The bistable relay based computer is designed around four master printed circuit boards, on which are mounted the bistable relays, the semiconducting diodes, the light emitting diodes, etc.
    The approbation of the BRC44 prototype with students demonstrated the easy perception of the working principle of the digital computer, due to the pictorial presentation, the light indication of the current state of each relay, etc. The computer is protected with a utility model registered at the Patent Office of the Republic of Bulgaria.