Technologies and Innovation : 7th International Conference, CITI 2021, Guayaquil, Ecuador, November 22-25, 2021, Proceedings - Valencia-García, Rafael; Bucaram-Leverone, Martha; Del Cioppo-Morstadt, Javier; Jácome-Murillo, Emma; Vera-Lucio, Néstor (Cham Springer International Publishing AG, 2021)