This issue consists of 10 articles from 24 authors affiliated with 11 institutions from 7 countries including:

• Indonesia (Universitas Pendidikan Indonesia, University Bhayangkara Surabaya)
• South Korea (Yeungnam University)
• Italy (Politecnico di Milano)
• Nigeria (Ariosh Engineering)
• Iran (Islamic Azad University, Farvardin University, Payam Noor University)
• Malaysia (Universiti Malaysia Pahang, Universiti Teknologi Petronas)
• Netherlands (DC Eindhoven)

This issue consists of 10 articles from 25 authors affiliated with 12 institutions from 6 countries including:

• Singapore (Nanyang Technological University)
• Belgium (atholieke Universiteit Leuven, Leuven and Institute of Nanoscale Physics and Chemistry (INPAC))
• Indonesia (Bogor Agricultural University, Universitas Andalas, Universitas Hasanuddin, Universitas Papua, Universitas Pendidikan Indonesia)
• Japan (Hiroshima University, Gifu University)
• Netherlands (Tebodin Engineering & Construction, Rotterdam, DC Eindhoven)
• Malaysia (University Malaysia Pahang)