Table of Contents


    • An integrated approach to modeling innovative aging

      pg(s) 3-6

      The rapid development of communication and information technologies not only reduces risk but also strongly influences the ability of industrial companies to develop innovation activities faster and more purposefully. A dynamic and difficult to predict environment has been created in which companies are forced to flexibly seek alternative solutions to the negatively influencing factors in their operations. There are numerous tools and models for strategic development and evaluation of innovation. Most of them describe the problem statically, i.e. at some point in the company’s development until the components of time and innovative aging are taken into account. The purpose of this article is to propose a new approach to modeling innovative aging. In this way, the influencing factors will already be present in the methodology for innovative development. Therefore, a new, integrated, approach of methods and tools is needed to realize an effective innovation system.

    • Apply an innovative approach to deriving the value of the synergistic effect

      pg(s) 7-10

      Synergistic value is a special value that also includes additional elements of value created by the amalgamation of two or more assets along the value chain. In addition, the synergistic value indicates the value of the combined interest of its participants and is greater than the total value of the individual assets evaluated. The purpose of this article is to analyze the situation of a number of companies generating this part of the synergistic effect. This innovative approach is based on a revenue approach and incremental cash flows are generated. The way in which the value of the synergistic effect is derived is of particular importance for all stakeholders, with the applicable
      methods being: Cost method and revenue method.


    • Aspects of efficiency from the implementation of the “MICROSYS” automated system

      pg(s) 14-17

      The effect of database implementation is to reduce production costs and design time, which will reduce the cost of the product. This necessitates a production-technological analysis and a strategy for further activity and development of the project: “Automated system for structural and technological design of microcomponents and microtechnical products – MICROSYS”.

    • Analytical study of family business in Bulgaria

      pg(s) 18-20

      On a global scale, family businesses are considered to be a key element of the local and national economy. The role and importance of family business stems from the fact that this business is an important source of economic growth and prosperity. It makes an important contribution to the formation of gross domestic product. At the same time, family business contributes significantly to employment growth and job creation. In addition, this business contributes to the socio-economic and social development of the local, regional and national level of the country. In addition, it is important to emphasize that the role and importance of the family business is also determined by the fact that it is regarded as an essential basis for training entrepreneurs. This importance is due to the fact that the family business develops an entrepreneurial spirit and a new business culture. As a result of the analytical study of the nature and characteristics of the family business in the country, recommendations and guidelines for its promotion have been presented

    • The conception “Balanced Scorecard” – tool for strategic management of higher education institutions

      pg(s) 21-24

      The paper deals with the conception of Balanced Scorecard (BSC) as an innovation strategic management system, which appears to be a superstructure of the Quality Management Systems and provides for the assessment of the basic processes in an organization. The BSC methodology and its relationship with the ISO 9001 requirements is presented and on this basis, an innovation strategy map serving the purposes of a university development has been developed.

    • Intellectual Property Rights (patents): Essentials and innovative potential in wine industry

      pg(s) 25-28

      The aim of the paper is to explore what the influence of the Intellectual Property Rights (IPRS) on the Modern economic growth is, whether there is a relationship between them, and what impact can patents have on the invention activity – positive, negative or both. It is going to explain the importance and association of technological progress with economic growth, the main goal and idea of IPRS, the way the system has been used in the period of the beginning of Modern economic growth, and research whether patents were the biggest incentive for inventors in this period as a whole and in wine industry in particular. The paper provides examples of the main European, United States and International patents available on wine production and preservation


    • Real-time urban air pollution monitoring using unmanned aerial vehicles

      pg(s) 29-32

      Measuring pollutant gases for real-time air quality monitoring is a challenging task that claims a lot of time of observation and large numbers of sensors [1]. Unmanned Aerial Vehicles (UAVs) equipped with different micro-sensors have been introduced for air quality monitoring, as they can offer new approaches and research opportunities in air pollution and emission monitoring instead of ground-based monitoring systems [2]. UAVs with mobile monitoring devices are an effective, flexible and alternative mean to collect air pollutant concentration data [3]. Hence, deployment of a fleet of UAVs could be considered as an acceptable alternative for the purpose of air monitoring [4]. The aim of this paper is to elaborate performance capabilities of UAVs for effective monitoring of air pollution, providing the ability to measure air pollutants with high sensitivities.

    • Evenness and unevenness in cylindrical milling

      pg(s) 33-36

      High-speed milling is one of the new modern technologies in machining. It is radically different from the known method of the conventional milling in fundamentally different process specified by the modified mechanism of the cutting process. This article presents a theoretical model to determine the coefficient of unevenness aimed at giving information whether already selected cutting conditions in cylindrical milling is admissible. This makes it possible to use the power of the machine most conveniently, to improve the quality of the machining and to achieve a relaxed operation. The model is based on derived mathematical equations

    • Energy (isentropic) analysis of three-cylinder steam turbine with re-heating

      pg(s) 37-40

      In this paper is presented energy (isentropic) analysis of high power, three-cylinder steam turbine with steam re-heating. A comparison of real (polytropic) and ideal (isentropic) steam expansion processes at nominal load show that observed turbine develops real power of 655.35 MW, while in ideal situation it can develop 716.18 MW. The highest energy loss and the lowest energy efficiency occur in the high pressure turbine cylinder (25.67 MW and 89.14%), while intermediate pressure cylinder has the highest energy efficiency and the lowest energy loss. The energy efficiency of the whole observed turbine is 91.51%, what is in the expected range for such high power steam turbines at nominal load. Further optimization of this steam turbine will be primarily based on the high pressure cylinder.

    • A new method for the detection of poor electrical contacts in low-voltage electrical installations characterised by the TN protection system – field validation in residential buildings

      pg(s) 41-45

      The previously developed new method for detecting poor electrical contacts in low-voltage electrical installations characterised by the TN protection system has been validated by field measurements performed in residential buildings. The method was developed by the establishment of a correlation between the measured line to earth and line to neutral short circuit loop resistances and the degree of the contact deterioration, i.e. the increase of its electrical resistance. The correlation was established by analysing the data obtained from a large number of documents related to periodic verifications of the quality of low-voltage electrical installations in industrial and administrative facilities (issued by the Laboratory for testing low-voltage electrical and lightning protection installations at the School of Electrical Engineering in Belgrade), as well as the data obtained through a large number of experiments in which the impact of poor electrical contacts on the occurrence of „hot“ spots in low-voltage electrical installations was analysed. In those experiments the influence of an incomplete overlap of the surface of the copper conductor and the contact surface at the electrical component terminal (reduction of the contact surface), a reduced pressure force between the contact surfaces of the copper conductor and the screw of the electrical component terminal (reduction of the torque), and an increased oxide layer at the point of electrical contact (old and/or corrosion-damaged contact) on electrical and thermal behaviour of electrical contacts was investigated. The developed method for detecting poor electrical contacts was applied to the verification of the quality of low-voltage electrical installations in 6 flats of old (10–60 years) residential buildings and the measurement results are presented and analysed in this paper.