Agents and Systems -- Variant Approach Metaheuristics for Parallel Machines Scheduling Problem -- Technology Applied to Education -- Augmented reality to reinforce working memory in children with ASD. A case studies -- A Review of Intelligent Tutoring in Secondary Education -- Analyzing Attendance Indicators in Digital Technologies Mediated Courses in Tertiary Technician Education -- Graphic Computation, Images and Visualization -- COVID-19 signs detection in chest radiographs using convolutional neural networks -- A Digital Zen Garden For Mental Health Conditions Treatment -- Software Engineering -- Toward an Execution Trace Standard: an MDE Approach -- New Horizons for Metamorphic Relationships in Formal Verification -- Approach to Improving Java Source Code considering Non-compliance with a Java Style Guide -- Quality Management Systems and Blockchain in the 4.0 era: A literature review -- Databases and Data Mining -- Boosting the permutation index for similarity searching using an eclectic approach -- Dynamic Distal Spatial Approximation Trees -- Hardware Architectures, Networks, and Operating Systems -- Analysis of QoS and QoE Metrics of IPTV Multicast Video Traffic on a LAN TestBed -- Innovation in Software Systems -- A Query-By-Example Approach to Compose SPARQL Queries in the GF Framework for Ontology-Based Data Access -- Systematic mapping of the literature on the conceptual modeling of industry 4.0 -- SIBDaCAr: A Chronotanatodiagnostic System Prototype for the Republic of Argentina -- Signal Processing and Real-Time Systems -- A New Academic RTOS: Xinu Port to the AVR Architecture -- Innovation in Computer Science Education -- SETIC: an Educational Software about the Functioning of Computer Parts -- A Turing Machine at Secondary School -- Digital Governance and Smart Cities -- Application Programming Interface Technology to optimize the Exchange of Information between Legal Systems.