Vol. 15 No. 1, March 2022 | e-ISSN: 2407-8964 

All articles in this issue include authors from 3 universities in Indonesia (Poltekkes Kemenkes Surabaya, Department of Information Technology, Politeknik Negeri Jember, Jember, Indonesia, and Department of Health, Politeknik Negeri Jember, Jember, Indonesia ) and universities from other countries (Walchand Institute of Technology, Solapur, INDIA, Department of Electrical and Electronics Engineering. Abubakar Tafawa Balewa University, Bauchi, NIGERIA, Department of Physics, Federal University Gusau, Nigeria, Camellia Institute of Technology and Management, Hooghly, INDIA, Riphah International University, Islamabad, PAKISTAN, Uttaranchal University UIT Dehradun, INDIA).