This issue consists of 8 articles from 26 authors affiliated with 13 institutions from 5 countries including:

• Nigeria (Shehu Shagari University of Education Sokoto; Ahmadu Bello University; Nigerian Institute of Transport Technology)
• South Korea (Yewon Arts University; Sungkyunkwan University)
• Italy (Politecnico di Torino)
• Pakistan (Pakistan Institute of Engineering and Applied Sciences; University of Punjab Lahore; Khwaja Fareed University of Engineering and Information Technology; The Superior University; COMSATS University Islamabad)
• Indonesia (Sultan Ageng Tirtayasa University; Universitas Pendidikan Indonesia)

This issue consists of 10 articles from 32 authors affiliated with 16 institutions from 5 countries including:

• Indonesia (Universitas Pendidikan Indonesia, Universitas Sultan Ageng Tirtayasa, Institut Teknologi Bandung, Universitas Indonesia, Universitas Negeri Makasar, UIN Sunan Gunung Djati)
• Pakistan (Government College University Lahore, Minhaj University, Agriculture University Faisalabad, Khawaja Fareed University of Engineering and Information Technology, Lahore College for Women University, University of Education Lahore, University of the Punjab, University of Engineering and Information Technology)
• Nigeria (Nwafor Orizu College of Education Nsugbe)
• Liberia (William V. S. Tubman University)
• Sweden (KTH Royal Institute of Technology)

This issue consists of 5 articles from 13 authors affiliated with 4 institutions from 2 countries including:

• Indonesia (Universitas Pendidikan Indonesia, Universitas Sultan Ageng Tirtayasa, UIN Sunan Gunung Djati Bandung)
• India (Osmania University)

This issue consists of 8 articles from 22 authors affiliated with 10 institutions from 5 countries including

• Indonesia (Sampoerna University, UIN Sunan Gunung Djati Bandung, Universitas Pendidikan Indonesia)
• India (Osmania University)
• Nigeria (Ahmadu Bello University, Nigerian Institute of Transport Technology (NITT), University of Ilorin)
• Iraq (Northern Technical University, University of Basra)
• United States (The University of Arizona)

This issue consists of 7 articles from 15 authors affiliated with 8 institutions from 4 countries including:

• Nigeria (Federal University of Technology, Enugu State University of Science and Technology)
• Indonesia (Universitas Pendidikan Indonesia, Universitas Sultan Ageng Tirtayasa)
• Malaysia (Universiti Teknologi Malaysia)
• Uzbekistan (Termez Institute of Engineering and Technology, National University of Uzbekistan, Urgench State University)

This issue consists of 10 articles from 34 authors affiliated with 20 institutions from 7 countries including:

• Algeria (University of El Oued, University of Ouargla, University of Sidi Bel Abbès, Federal University of Viçosa, University of Jijel)
• Indonesia (Universitas Pendidikan Indonesia, Universitas Sultan Ageng Tirtayasa)
• United States (Virginia Commonwealth University)
• Nigeria (Federal University of Technology, University of Benin, Science and Education Development Institute, Federal College of Agriculture, Bamidele Olomilua University of Education, Rufus Giwa Polytechnic, University of Education, Science, and Technology)
• Sweden (Royal Institute of Technology)
• Mauritania (Institut National de Recherches en Santé Publique, Université de Nouakchott Al-Aasriya)
• India (Osmania University, ICSSR Major Project)

This issue consists of 5 articles from 21 authors affiliated with 8 institutions from 5 countries including:

• Indonesia (Universitas Pendidikan Indonesia, Universitas Sultan Ageng Tirtayasa)
• Brunei Darussalam (University Brunei Darussalam)
• Malaysia (Universiti Teknologi PETRONAS (UTP), Universiti Teknologi Malaysia)
• Algeria (University of Ouargla, University El Oued)
• Mexico (Sonora Technological Institute)