Table of Contents

  • Effect of acid gas content to the dehydration process efficency

    pg(s) 3-5

    Natural gas in Republic of Croatia is being produced from three main regions: Sjeverni Jadran, Duboka Podravina and Međimurje. The natural gas produced from Međimurje region has been taken as an example for modelling the dehydration process because, compared to natural gas from Duboka Podravina region, it contains higher amount of acid gases. The associated gas with much smaller content of acid gases, currently being flared at region site called Istočna Hrvatska, has been taken as a second example. The comparison of these two cases has shown the effect of acid gases to the dehydration process efficiency. In both cases, absorption by triethylene glycol is chosen. Due to a large discrepancy in acid gas content, water content difference observation is much easier. Modelling of the dehydration process has been made in Aspen Hysys software.

  • An efficient combination of water treatment and electricity generation by different microorganisms

    pg(s) 6-7

    A sample of acid drainage waters generated after rainfall in a dump of low-grade copper ores and mining wastes was tested under laboratory conditions to combine the treatment of such waters with the subsequent generation of electricity. This combination was possible and efficient due to the fact that the same microorganisms participated in both processes, i.e. in the water treatment and in the electricity generation. These microorganisms were heterotrophs related to two main groups: of sulphate-reducing and iron-reducing bacteria. These bacteria were anaerobes, with efficient growth and activity at pH within 3.0 – 3.5 using the organic donors of energy and avoiding the precipitation of the trivalent iron

  • Geoinformation modeling

    pg(s) 8-10

    Modeling can be defined in the context of geographic information systems (GIS) as occurring whenever operations of the GIS attempt to emulate processes in the real world, at one point in time or over an extended period. Models are useful and used in a vast array of GIS applications, from simple evaluation to the prediction of future landscapes. Modeling in GIS raises a number of important issues, including the question of validation, the roles of scale and accuracy, and the design of infrastructure to facilitate sharing of models.

  • Numerical analysis of real open cycle gas turbine

    pg(s) 11-14

    The paper presents a thermodynamic analysis of gas turbine with real open cycle. Gas turbine operates in combined heat and power (CHP) system. Analysis is provided by using measured operating parameters of operating mediums (air and combustion gases) in all required operating points. Cumulative real turbine developed power amounts 78611.63 kW. In the whole gas turbine process, the highest losses occur in combustion chambers during the heat supply process and amounts 13689.24 kW. Turbine power losses are equal to 7976.22 kW, while the turbo-compressor power losses amounts 4774.24 kW. While taking into account all analyzed gas turbine components, the highest efficiency of 90.79% has turbine, followed by combustion chambers which efficiency is equal to 89.01%. Turbo-compressor efficiency amounts 88.59% and the whole gas turbine cycle has efficiency equal to 33.15%.

  • Possibilities for social entrepreneurship inwine industry: An exploratory approach

    pg(s) 15-18

    Social entrepreneurs cleverly combine business techniques and private sector approaches in order to develop solutions to social, cultural, or environmental problems, and do so in a variety of organizations. All European countries need to promote the entrepreneur spirit, to stabilize the institutional and cultural environment for innovations, and to increase the number of socially oriented small and medium sized enterprises (SMEs). This exploratory approach is focused on SMEs from wine industry, positioned in Plovdiv territorial unit, Bulgaria. It presents opportunities to enrich company’s innovation strategies with a view to increase the share of social enterprises and the motivation of employees and owners to implement “good practices” for social entrepreneurship. This study offers different perspectives for observing the phenomenon social entrepreneurship, opportunities for financing and National policies that are focused on their encouragement.

  • Barriers and challenges of transferring modern project management principles in Western Balkan region

    pg(s) 19-22

    Project management is an effective management approach that has proven to be a great value for development of the Western Balkan region. Successful project identification, preparation and implementation can help developing countries in their progress. This research focuses on Western Balkan countries and the most common project management barriers. They are analysed related to two groups of barriers, one linked to the human resource development, and other related to the government functioning. Later the barriers are connected to challenges identified by the PMBOK project management knowledge areas and how they are influencing the implementations in the analysed region.

  • Methodological approach for safety assessment in breeding and selection of sheep raised for meat

    pg(s) 27-30

    An analysis of the state, technology and technique of the pastoral system of sheep breeding, which is best suited to the specifics of the meat sector in sheep breeding, is made.
    The main types of hazards are classified for the main types of works and the conditions under which a methodological approach based on the methods of expert assessment is established to determine the significance of the different types of hazards for working in breeding sheep for meat and in breeding activities on farms .

  • The growth of the role of institutions of culture and values in the information society and economy knowledge

    pg(s) 31-34

    The concept of a society of information is considered in the article. It is proved that the knowledge economy, the core of which is the creative economy, provides the formation of a knowledge society. The cultural industry, or creative economy, is considered as a new type of industry. The essence and peculiarities of the creative potential of a specialist are determined. Scientist’s philosophers in their observance allow to build the foundations of modern accolade system of the information society. Universal values as they develop and change in the history of mankind, created the basis for the survival of civilization. Values are concepts or beliefs, are ordered by relative probability. A feature of economic value is the combination, integration in the form of a complex subconscious judgments of aesthetic, moral, legal, political, religious, and existential values. Economic mentality must be considered as a significant element of the informal subsystem of the institutional structure of the national economy.

  • The specificity of the post-information age

    pg(s) 35-37

    What makes us call a new age a post-information one? New age is created by dominating technologies. These include DNA manipulation, also human. The ability to cut and paste parts of the DNA string has created new, previously unknown possibilities to interfere in the natural processes at the cell structure level.
    The next main factor shaping the social change is holographic technology. Due to the miniaturisation of these devices phone calls will be replaced by devices for holographic transmission and reconstruction. The change in mass communication will be significant. Information in the text form will be replaced by fully sensory, spatial images. These technologies obscure the differences between the real and artificial world and prepare new forms of human life institutionalisation.
    The third element creating a new age is micro, mezo and macro robotics. The technology of learning in action and obtaining information independently by robots creates new forms of work and social interactions for man as well as areas of man’s responsibility. In my presentation I will focus on four main trends, certain agents and organisational structures of the post-information society.

  • Good practies using innovative learning methods

    pg(s) 38-40

    The present article aims to present to a wider audience selected in-depth examples of practice that have been addressed and applied in contemporary education. Using experience as an exchange of ideas for good practice from other countries gives a clear idea of training and the learner development plan. The factors contributing to success in students’ theory and practice are emphasized . All these factors and elements of good practice are interlinked to achieve sustainability and sustainability in all areas of education / leadership, vision and incentives are key at all levels.The main problems faced by students during their transition to the transition are finding the right balance between their theoretical and practical training. The effectiveness of the entire educational and educational system depends on it.
    The analysis of the results obtained from the mentioned examples of good practice in education shows that the use of one type of method is not sufficient for the correct perception of the curriculum by the students.