1. ​Trends in the Development of Transport Services Offered on Transport Exchanges during the Covid-19 Pandemic 2. Use Cases and C-ITS Communication Analysis as s Step Toward the Connected Mobility3. Use of a Software Application to Calculate the Efficiency of Municipalities Using the Method of Data Envelope Analysis 4. Mobile Application for Remote HR Management5. Mathematical Modelling of Drive and Dynamic Load of Teeth of Cylindrical Worm Gear6. Research into the Impact of Modern Marketing Strate-gies on the Competitiveness of the Company and In-creasing the Economic Potential of the Company 7. Use of Marker AR by implementation on production equipment for education of students of technical fields: A study8. Increasing the Client Satisfaction by Exploitation of Customer Relationship Management in Construction Projects9. Use of Probabilistic Risk Assessment Methodology for Providers of Services in a Virtual Environment10. Challenges of Improving the Railway Passenger Information System in the Republic of Croatia11. Spammer Detection approaches in Online Social Network (OSNs): A Survey12. Overview of Wi-Fi-based Automatic Passenger Counting Solutions in Public Urban Transport13. Impact of Dynamic Characteristics of Gears on the Reliability of Prilling Equipment14. Security and Privacy of Cloud based Online Social Media: A Survey15. Monitoring the energy consumption of FDM device based on the variation of operating parameters: A study