Virtualization of Teaching and Learning of Engineering Students and its Impact on Self-Perception of Attitude Acquisition, in the Context of COVID-19. - Omar Chamorro-Atalaya; Soledad Olivares-Zegarra; Nestor Alvarado-Bravo; Salvador Trujillo-Perez; Almintor Torres-Quiroz; Florcita Aldana-Trejo; Victor Villanueva-Acosta (Int. J. Emerg. Technol. Learn., 2021)