Assessing virtual and on-site technical trainings during the first year of covid-19 pandemicVyta W. Hanifah, Didu Wahyudi, Tika Tresnawati, Amalia Ulpah, Catur O. I. Hastuti, Rahmawati, Nurhayati and Agus MuharamE3S Web Conf., 306 (2021) 03003DOI: https://doi.org/10.1051/e3sconf/202130603003