Vol. 21 No. 2 (2023): Spektrum Industri - October 2023

This issue contains articles from different countries Algeria, Bahrain, France, Nigeria, Colombia, Spain, Ukraine, and Indonesia. The authors/co-authors are from various institutions such as University of Oran, University of Bahrain, Centre Hospitalier de Sarrebourg, Federal University Lokoja, Universidad Industrial de Santander, University of Santiago de Compostela, Universidad de Investigacion y Desarrollo, National Academy of Sciences of Ukraine, National Technical University of Ukraine, Universitas Ahmad Dahlan, Universitas Islam Negeri Sultan Syarif Kasim Riau, and Universitas Pembangunan Nasional "Veteran" Jawa Timur.