https://scidar.kg.ac.rs/handle/123456789/8215 Mon, 04 May 2026 17:42:39 GMT 2026-05-04T17:42:39Z https://scidar.kg.ac.rs/handle/123456789/23052 Title: Blockchain-Driven Approaches For Sustainable Digital Marketing Authors: Paunovic, Lidija; Milunović Koprivica, Sandra Abstract: Digital marketing, as a dynamic and rapidly evolving field, closely follows the development of technique and technology and changes in market requirements, facing constant turbulence. This inherent dynamism brings forth certain challenges that digital marketing addresses with varying degrees of success and adaptability. In such an environment, it is not easy to effectively confront these challenges and overcome the limitations that arise in daily implementation. One potential solution to these limitations has been identified in modern and emerging technologies. This paper demonstrates the transformative impact of blockchain technology on digital marketing, and maps its contribution to both business and environmental sustainabi lity, demonstrating how innovative blockchain-driven approaches can foster a more efficient, secure, and sustainable digital marketing ecosystem. Thu, 01 Jan 2026 00:00:00 GMT https://scidar.kg.ac.rs/handle/123456789/23052 2026-01-01T00:00:00Z https://scidar.kg.ac.rs/handle/123456789/22922 Title: Računarstvo u oblaku Authors: Milošević, Marjan; Bogićević, Žarko Thu, 01 Jan 2026 00:00:00 GMT https://scidar.kg.ac.rs/handle/123456789/22922 2026-01-01T00:00:00Z https://scidar.kg.ac.rs/handle/123456789/22891 Title: The impact of green organizational culture on employee satisfaction in Serbia Authors: Rendulic Davidovic, Gordana; Radosavljevic, Nikola Abstract: This study examines the impact of green organizational culture on overall job satisfaction and its specific dimensions among employees in Serbia. Data were collected from 82 respondents across different industries and analyzed using regression techniques. The results show that green organizational culture has a significant and positive effect on job satisfaction, explaining 44.7% of its variance, with the strongest effects observed in communication, working conditions, and rewards. This study contributes to by providing an overview of the current state of green organizational culture and its relationship with job satisfaction in Serbia, highlighting that fostering a green organizational culture not only supports environmental sustainability but also increases employee well-being and workplace attitudes. Limitations of this study include the small sample size and the use of a shortened green organizational scale. Wed, 01 Jan 2025 00:00:00 GMT https://scidar.kg.ac.rs/handle/123456789/22891 2025-01-01T00:00:00Z https://scidar.kg.ac.rs/handle/123456789/22842 Title: Active condensation in hot and superheated water boilers Authors: Karamarkovic, Rade; Marjanović, Milan; Nikolić, Miloš; Todorović, Dušan; Obradović, Marko Abstract: Return temperatures in hot and superheated water boilers are frequently higher than the corresponding flue gas dew point temperature. To utilize the fuel’s higher heating value in such boilers, active condensation (AC) systems must be employed. However, these systems require additional energy to transfer heat from below the dew point to above the return water temperature. This paper analyzes three AC systems in three case studies: (i) a compressor heat pump (HP) in a boiler room supplying a hot water district heating (DH) system; (ii) a superheated water DH system fueled by natural gas, using a flue gas condenser coupled with a compressor HP-based AC system; and (iii) the same system as (ii) but with an absorption HP. The case studies are based on experimental investigations of DH systems in Loznica (i) and Kraljevo (ii and iii). Numerical models were developed using experimental data and findings from other researchers, combined with material and energy balances. The results address the following key questions: (i) When is AC implementation economically feasible? (ii) What type of HP should be used, and under what conditions? (iii) What HP design specifications are required? (iv) What is the optimal flue gas temperature for AC systems? (v) Under what circumstances is coupling flue gas condensation with AC viable? (vi) When is an absorption HP economically justified? Wed, 01 Jan 2025 00:00:00 GMT https://scidar.kg.ac.rs/handle/123456789/22842 2025-01-01T00:00:00Z