Cluster analysis of digital competencies among professors in higher education - Chahuán-Jiménez, Karime; Lara-Yergues, Eduardo; Garrido-Araya, Dominique; Salum-Alvarado, Elena; Hurtado-Arenas, Paulina; Rubilar-Torrealba, Rolando (Frontiers in Education, 2025)