Sustainable supply of energy is possible only with an optimal combination of the characteristic benefits of each of the renewable energy sources. Unlike fossil fuels, biogas is a permanently renewable fuel, produced from biomass, which is a living storehouse of solar energy through photosynthesis. The use of biogas helps to improve the energy...

By Ljiljana Tanasić, Biljana Delić, Saša Spasojević, Bojan Damnjanović

 The emergence of the COVID-19 pandemic and its unprecedented speed of transmission around the world have fundamentally shaken the habits and behavior of consumers in shopping. Keeping social distance, partially limited movement, and depending on the situation, the introduction of quarantine, has put consumers in a position to adapt to the new...

By Mladen Milić, Jelena Vitomir, Dražen Vrhovac

 Multi-criteria decision making (MCDM) methods have been used in various research areas in order to evaluate and rank finite number of alternatives based on a set of predetermined criteria. One of the main concerns when applying MCDM methods is related to the fact that different methods can yield different results in terms of the ranking of th...

By Nenad Medić, Zoran Anišić

 While Bosnian society seeks to ensure the standards of the institutions of the European Union and the Council of Europe within its own society, we face the problem of security of state borders and the growing trend of illegal migration. Una Sana Canton has become a kind of buffer zone towards "open Europe or Europe of fortresses" where all th...

By Amela Čolić, Hamdija Lipovača, Belma Bajrić

 Change management, as a constant task of managers and an integral part of managing the organization as a whole, is a general management process aimed at planning and implementing change so that the organization can function successfully and develop in conditions of continuous change in the environment. Accordingly, the change management proce...

By Biljana Bjelica, Ognjen Bakmaz, Dragan Vukasović

 Šabac is a city that has had a central wastewater treatment plant (WWTP) since 2017, which is very important from the aspect of protecting the health of the population and protecting the environment. The advantage of the plant is that it facilitates the business of economic entities in the city. They do not have to have their own waste...

By Suzana Knežević

 Alternative energy is any energy source that does not use fossil fuels (coal, natural gas, petroleum). Seven types of renewable energy are solar, wind, hydroelectric, ocean, geothermal, biomass, hydrogen energy. Solar and wind energy is widely available in Armenia due to geographic and climate conditions. A green economy is an economy that ai...

By Anna Arshak Mktchyan-Arshakyan, Marine Armen Nalbandyan

 The paper deals with the research of the theoretical setting of the phenomenon of public urban spaces through the presentation of the analysis of research that describes the structure of public urban spaces in terms of the processes that take a place within them. It analyzes public life and the user's relationship with the city life, i.e., re...

By Dubravko Aleksić, Tanja Trkulja

 Public spaces are very important for urban life, and their traditional form are the streets. Streets occupy more than 80% of the total public space. The content of the street defines its character and the built, natural, social, cultural and economic context. Also, streets must be designed to respond to the many challenges that cities face, s...

By Tanja Trkulja, Dubravko Aleksić

 Buildings consume 40% of primary energy and are responsible for 36% of greenhouse gas (GHG) emissions. Therefore, reducing energy consumption in buildings can lead to large energy savings, and thus to a reduction in GHG emissions and environmental protection. Nearly zero energy buildings have great potential for a significant reduction in ene...

By Ana Radojević, Danijela Nikolić, Jasmina Skerlić, Jasna Radulović