Front matter (pp. 0–2)

Table of Contents (p. 3)

1.

César Eduardo Monroy Pérez, Belém Priego-Sánchez, Gabriela A. García-Robledo, José A. Reyes-Ortiz

Sistema geográfico para la representación de opiniones asociadas a la vacunación COVID-19 (pp. 5–16; abstract)

2.

Juan David Peña Melo, Saúl Eduardo Pomares Hernández, Lil María Xibai Rodríguez Henríquez, Julio César Pérez Sansalvador

My two Bitcoins? Implementation of Double-Spending on Fast Bitcoin Payments (pp. 17–29; abstract)

3.

Miguel Soto, Hiram Calvo, Alexander Gelbukh

Análisis de texto tóxico en redes sociales (pp. 31–45; abstract)

4.

Omar Otoniel Flores-Cortez, Bruno Alberto Gonzales Crespin

Design and Development of an IoT-based System for Truck Load Tracking and Monitoring (pp. 47–59; abstract)

Back matter (p. 61)