2) Istanbul Smart Grids and Cities Congress and Fair (April 2018 )
3) Öztaş S., Bektaş N., (2018), “Sustainable Solid Waste Management Applications for Smart City Consept”, YTU Eurasia Waste Management, İstanbul -Poster
4) ÖztaşS.,BektaşN (2018“ImportanceofRecyclingUrbanSolidWastestotheEconomy”, 1st Environmental Engineering Resource Recovery International Congress (November 2018-Istanbul)- (Poster Presentation)
5) Bektaş N., Öztaş S., (2019), “Circular Economy and Zero Waste Approach”, Local Administrations Symposium in the Presidential Government System (2019-Ankara)- Sustainable Waste Management, (Presentation)
6) Öztaş S., Bektaş N., (2019), “The Use of LCA in Environmental Engineering”, 1st International Conference on Environment, Technology and Management, ICETEM, Niğde
7) Öztaş S., Bektaş N., (2019), “The Importance of Recycling Urban Solid Wastes to the Economy”, XIII. National- I. International Environmental Engineering Congress, GTU, Kocaeli–(Presentation + Paper)
8) Öztaş S., Bektaş N., (2019), “Urban Solid Waste Management with Zero Waste Approach”, Kartepe Urbanism and Happy Cities Summit, Kocaeli – (Presentation/International Academic Papers Handbook)
10)Bektaş N., Öztaş S., (2021), “Smart Cities Overview and Environmental Applications (Kocaeli BB-Smart City Workshop, Kocaeli.
11) Öztaş S., (2021), “Speech reports of sessions on “Re-and Together for Climate Justice”, “Rethinking Local Green Policy with Data”, “Environmental Impact Assessment in Waste Management with Value Chain Analysis Approach”, MARUF21 (Marmara Urban Forum, Panel Kitabı, İstanbul.
12)Demirkaya Z., Öztaş S., Bektaş N., (2021), “Evaluation of Different Solid Waste Management Alternatives of Gebze District Using Life Cycle Analysis”, 5th International Conference on Natural Resources and Sustainable Environmental Management, NRSEM, Kıbrıs.
13) Öztaş S., Bektaş N., (2021), “Sustainable Solid Waste Management with Zero Waste Approach”, 5th International Conference on Natural Resources and Sustainable Environmental Management, NRSEM, Kıbrıs.
14) Öztaş S., Bektaş N., (2022), “Evaluation of the Environmental Dimensions of Sustainability in Terms of Businesses”, 6th Eurasia Waste Management Symposium YTU, İstanbul. Sunum + Bildiri)
15) Öztaş S., Erses Yay S., Bektaş N., (2022), ‘‘Evaluating municipal solid waste management using life cycle analysis: a case study’’, Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 44:4, 9255-9271, DOI: 10.1080/15567036.2022.2128938