Firdaus, Rangga and wibaba, Basuki and Khaerudin, Khaerudin (2020) Physical Model of Development of Assistance System Proficiency Test for Ubiquitous Learning-Based Information Competency Competencies. Journal of Computational and Theoretical Nanoscience. ISSN ISSN: 1546-1955 (Print) ; EISSN: 1546-1963 (Online)