Enis Karaarslan, Assist. Prof. Dr., Mugla Sitki Kocman University (MSKU), Department of Computer Engineering, Mugla, TürkiyeHe is one of the founders of the Artificial Intelligence and Cyber ​​Security disciplines at MSKU. His research areas are; computer networks, cybersecurity, blockchain, data science, digital twin, and Metaverse. He provides consultancy to companies and research projects in the industry. He founded NetSecLab and the Metaverse research labs. He is the chief editor of the "Journal of Metaverse''. He formed MSKU Blockchain Research Group (MSKU BcRG) and has been working on the potential of blockchain since 2017. He has given various seminars and training on blockchain technology at multiple events. He taught blockchain courses at the graduate and undergraduate levels and acted as a thesis advisor. He has several publications and a patent on decentralized technologies. He founded MSKU Metaverse Research Group (MSKU MvRG) and has been conducting interdisciplinary studies there since 2021. Ömer AYDIN, Assoc. Prof. Dr., Manisa Celal Bayar University, Manisa, TürkiyeÖmer Aydın received the B.S. degree in Computer Engineering from Istanbul Technical University of Turkey in 2007. He received the M.S. degree in Electrical and Electronics Engineering from Dumlupınar University, Kütahya, Turkey, in 2014 and Ph.D. degree in Computer Engineering from Dokuz Eylül University, Izmir, Turkey, in 2019. He has been an associate professor in the Department of Electrical and Electronics Engineering at Manisa Celal Bayar University, Manisa, Turkey. His research interests include random number generation, lightweight authentication protocols, cryptography, digital twin, cyber-physical systems, security of RFID systems, and other lightweight devices. He is a member of Dokuz Eylul University Security Research Group and the founder of the Izmir Academy Association. Assoc. Prof. Ömer Aydın is also a member of the Association for Information Systems (AIS).  Umit Cali, Assoc. Prof. Dr., Norwegian University of Science and Technology, NorwayDr. Umit Cali has more than 20 years international experience in the fields of energy systems, data science, blockchain technologies, ICT, energy markets, and economics as a professor, an entrepreneur, a researcher, and a CTO. Dr. Cali is also the co-founder of US (NSF SBIR funded) and Europe-based technology startup companies which are active in advanced energy informatics and blockchain. He is working as an associate professor of Energy Informatics (AI & Blockchain) in the Norwegian University of Science and Technology. He is serving as the vice chair of IEEE Blockchain in Energy Standards WG (P2418.5), the chair of IEEE TEMS Special Interest Group on Energy DLT, and an IEEE senior member. Umit is the leading author of the “Digitalization of Power Markets and Systems using Energy Informatics” book. Moharram Challenger, Assist. Prof. Dr., University of Antwerp, Antwerpen, BelgiumProf. Moharram Challenger received his Ph.D. in IT from International Computer Institute at Ege University (Turkey) in Feb 2016. He also received his B.Sc. and M.Sc. degrees in computer engineering and software engineering in 2001 and 2005, respectively. From 2005 to 2009, he has been a faculty member, and a lecturer, in the computer engineering department at IAU-Shabestar University. From 2010 to 2013, he was a researcher and a team leader of a bilateral project between Slovenia and Turkey (TUBITAK). From 2012 to 2016, he was the R&D director of UNIT IT Ltd. involved in one national project funded by TUBITAK and two international software-intensive projects in Europe called ITEA ModelWriter and ITEA Assume. In 2017 and 2018, he was a faculty member as an assistant professor at Ege University. From January 2019 to July 2020, he was a postdoc researcher at the University of Antwerp, working on a Flanders Make projects called PACo and DTDesign. He is currently a tenure-track assistant professor in the Department of Computer Science at the University of Antwerp. He is also the core laboratory manager of AnSyMo/Cosys core laboratory of Flanders Make Strategic Research Center at the University of Antwerp. His research interests include domain-specific modeling languages, multi-agent systems, cyber-physical systems, the Internet of Things, and digital twins. Prof. Challenger is also a member of the IEEE and ACM.

• 1. Digital twin literature survey.- 2. Digital Twin in Construction.- 3. Smart Cities and Digital Twin.- 4. Digital Twins for Industry 4.0.- 5. Digital Twin and Wind turbines.

Enis Karaarslan, Assist. Prof. Dr., Mugla Sitki Kocman University (MSKU), Department of Computer Engineering, Mugla, TürkiyeHe is one of the founders of the Artificial Intelligence and Cyber ​​Security disciplines at MSKU. His research areas are; computer networks, cybersecurity, blockchain, data science, digital twin, and Metaverse. He provides consultancy to companies and research projects in the industry. He founded NetSecLab and the Metaverse research labs. He is the chief editor of the "Journal of Metaverse''. He formed MSKU Blockchain Research Group (MSKU BcRG) and has been working on the potential of blockchain since 2017. He has given various seminars and training on blockchain technology at multiple events. He taught blockchain courses at the graduate and undergraduate levels and acted as a thesis advisor. He has several publications and a patent on decentralized technologies. He founded MSKU Metaverse Research Group (MSKU MvRG) and has been conducting interdisciplinary studies there since 2021. Ömer AYDIN, Assoc. Prof. Dr., Manisa Celal Bayar University, Manisa, TürkiyeÖmer Aydın received the B.S. degree in Computer Engineering from Istanbul Technical University of Turkey in 2007. He received the M.S. degree in Electrical and Electronics Engineering from Dumlupınar University, Kütahya, Turkey, in 2014 and Ph.D. degree in Computer Engineering from Dokuz Eylül University, Izmir, Turkey, in 2019. He has been an associate professor in the Department of Electrical and Electronics Engineering at Manisa Celal Bayar University, Manisa, Turkey. His research interests include random number generation, lightweight authentication protocols, cryptography, digital twin, cyber-physical systems, security of RFID systems, and other lightweight devices. He is a member of Dokuz Eylul University Security Research Group and the founder of the Izmir Academy Association. Assoc. Prof. Ömer Aydın is also a member of the Association for Information Systems (AIS).  Umit Cali, Assoc. Prof. Dr., Norwegian University of Science and Technology, NorwayDr. Umit Cali has more than 20 years international experience in the fields of energy systems, data science, blockchain technologies, ICT, energy markets, and economics as a professor, an entrepreneur, a researcher, and a CTO. Dr. Cali is also the co-founder of US (NSF SBIR funded) and Europe-based technology startup companies which are active in advanced energy informatics and blockchain. He is working as an associate professor of Energy Informatics (AI & Blockchain) in the Norwegian University of Science and Technology. He is serving as the vice chair of IEEE Blockchain in Energy Standards WG (P2418.5), the chair of IEEE TEMS Special Interest Group on Energy DLT, and an IEEE senior member. Umit is the leading author of the “Digitalization of Power Markets and Systems using Energy Informatics” book. Moharram Challenger, Assist. Prof. Dr., University of Antwerp, Antwerpen, BelgiumProf. Moharram Challenger received his Ph.D. in IT from International Computer Institute at Ege University (Turkey) in Feb 2016. He also received his B.Sc. and M.Sc. degrees in computer engineering and software engineering in 2001 and 2005, respectively. From 2005 to 2009, he has been a faculty member, and a lecturer, in the computer engineering department at IAU-Shabestar University. From 2010 to 2013, he was a researcher and a team leader of a bilateral project between Slovenia and Turkey (TUBITAK). From 2012 to 2016, he was the R&D director of UNIT IT Ltd. involved in one national project funded by TUBITAK and two international software-intensive projects in Europe called ITEA ModelWriter and ITEA Assume. In 2017 and 2018, he was a faculty member as an assistant professor at Ege University. From January 2019 to July 2020, he was a postdoc researcher at the University of Antwerp, working on a Flanders Make projects called PACo and DTDesign. He is currently a tenure-track assistant professor in the Department of Computer Science at the University of Antwerp. He is also the core laboratory manager of AnSyMo/Cosys core laboratory of Flanders Make Strategic Research Center at the University of Antwerp. His research interests include domain-specific modeling languages, multi-agent systems, cyber-physical systems, the Internet of Things, and digital twins. Prof. Challenger is also a member of the IEEE and ACM.

• 1. Digital twin literature survey.- 2. Digital Twin in Construction.- 3. Smart Cities and Digital Twin.- 4. Digital Twins for Industry 4.0.- 5. Digital Twin and Wind turbines.

Enis Karaarslan, Assist. Prof. Dr., Mugla Sitki Kocman University (MSKU), Department of Computer Engineering, Mugla, TürkiyeHe is one of the founders of the Artificial Intelligence and Cyber ​​Security disciplines at MSKU. His research areas are; computer networks, cybersecurity, blockchain, data science, digital twin, and Metaverse. He provides consultancy to companies and research projects in the industry. He founded NetSecLab and the Metaverse research labs. He is the chief editor of the "Journal of Metaverse''. He formed MSKU Blockchain Research Group (MSKU BcRG) and has been working on the potential of blockchain since 2017. He has given various seminars and training on blockchain technology at multiple events. He taught blockchain courses at the graduate and undergraduate levels and acted as a thesis advisor. He has several publications and a patent on decentralized technologies. He founded MSKU Metaverse Research Group (MSKU MvRG) and has been conducting interdisciplinary studies there since 2021. Ömer AYDIN, Assoc. Prof. Dr., Manisa Celal Bayar University, Manisa, TürkiyeÖmer Aydın received the B.S. degree in Computer Engineering from Istanbul Technical University of Turkey in 2007. He received the M.S. degree in Electrical and Electronics Engineering from Dumlupınar University, Kütahya, Turkey, in 2014 and Ph.D. degree in Computer Engineering from Dokuz Eylül University, Izmir, Turkey, in 2019. He has been an associate professor in the Department of Electrical and Electronics Engineering at Manisa Celal Bayar University, Manisa, Turkey. His research interests include random number generation, lightweight authentication protocols, cryptography, digital twin, cyber-physical systems, security of RFID systems, and other lightweight devices. He is a member of Dokuz Eylul University Security Research Group and the founder of the Izmir Academy Association. Assoc. Prof. Ömer Aydın is also a member of the Association for Information Systems (AIS).  Umit Cali, Assoc. Prof. Dr., Norwegian University of Science and Technology, NorwayDr. Umit Cali has more than 20 years international experience in the fields of energy systems, data science, blockchain technologies, ICT, energy markets, and economics as a professor, an entrepreneur, a researcher, and a CTO. Dr. Cali is also the co-founder of US (NSF SBIR funded) and Europe-based technology startup companies which are active in advanced energy informatics and blockchain. He is working as an associate professor of Energy Informatics (AI & Blockchain) in the Norwegian University of Science and Technology. He is serving as the vice chair of IEEE Blockchain in Energy Standards WG (P2418.5), the chair of IEEE TEMS Special Interest Group on Energy DLT, and an IEEE senior member. Umit is the leading author of the “Digitalization of Power Markets and Systems using Energy Informatics” book. Moharram Challenger, Assist. Prof. Dr., University of Antwerp, Antwerpen, BelgiumProf. Moharram Challenger received his Ph.D. in IT from International Computer Institute at Ege University (Turkey) in Feb 2016. He also received his B.Sc. and M.Sc. degrees in computer engineering and software engineering in 2001 and 2005, respectively. From 2005 to 2009, he has been a faculty member, and a lecturer, in the computer engineering department at IAU-Shabestar University. From 2010 to 2013, he was a researcher and a team leader of a bilateral project between Slovenia and Turkey (TUBITAK). From 2012 to 2016, he was the R&D director of UNIT IT Ltd. involved in one national project funded by TUBITAK and two international software-intensive projects in Europe called ITEA ModelWriter and ITEA Assume. In 2017 and 2018, he was a faculty member as an assistant professor at Ege University. From January 2019 to July 2020, he was a postdoc researcher at the University of Antwerp, working on a Flanders Make projects called PACo and DTDesign. He is currently a tenure-track assistant professor in the Department of Computer Science at the University of Antwerp. He is also the core laboratory manager of AnSyMo/Cosys core laboratory of Flanders Make Strategic Research Center at the University of Antwerp. His research interests include domain-specific modeling languages, multi-agent systems, cyber-physical systems, the Internet of Things, and digital twins. Prof. Challenger is also a member of the IEEE and ACM.

• 1. Digital twin literature survey.- 2. Digital Twin in Construction.- 3. Smart Cities and Digital Twin.- 4. Digital Twins for Industry 4.0.- 5. Digital Twin and Wind turbines.