A Decision Tree as an Explainable Artificial Intelligence Technique for Identifying Agricultural Production Predictor Variables in Mexico -- APOS Is Not Enough: Towards A More Appropriate Way to Estimate Computational Complexity in CIC Decimation Architectures -- Shape-Based Object Detection for Industrial Process Improvement -- Power- and Speed-Efficient Compressed Sensing Encoder via Multiplexed Stabilizer -- Classical Artificial Neural Networks and Seismology, Basic Steps for Training Process -- Fractals and Wavelet Fisher's information -- Firewall System for the Internet of Things -- Multimedia technology and smart cities; an inevitable combination of urban progress -- Air Quality Measurement System Using Open Hardware and IoT -- Reduction of energy consumption in a WSN by means of quantum entanglement -- A novel method based on Gunnar Farneback Method, Mathematical Morphology, and Artificial Vision for Flow Analysis in Electrochemical Reactors -- Search space reduction in road networks for the ambulance location and allocation optimization problems: a real case study -- Development of a web-based calculator to simulate link budget for mobile communications systems at urban settlements -- Scientific information management system for multidisciplinary teams -- Air Quality Prediction in Smart Cities using Wireless Sensor Networks and Associative Models -- User interface of digital platforms used TDHA patients: Case study in educational environment -- Recognition of Pollen-carrying bees using Convolutional Neural Networks and Digital Image Processing Techniques -- Predictive Models of Air Pollution through the Implementation of a Mobile Monitoring System -- Multi-labeling of Malware Samples using Behavior Reports and Fuzzy Hashing -- Computational Simulation Applied to 3.5 GHz Band Microstrip Yagi Array Antenna Design for 5G Technology Mobile Wireless Device -- 3D point cloud outliers and noise reduction using neural networks -- Development and coding of a data framing protocol for IoT/LPWAN networks based on 8-bit processing architectures -- Performance Analysis of Variable Packet Transmission Policies in Wireless Sensor Networks -- About a sentiment analysis technique on Twitter and its application to regional tourism in Quintana Roo" -- Comparative study of pattern recognition techniques in the classification of vertebral column diseases -- Security Verification on Instant Messaging Cryptographic Protocols -- Elaboration of an information system to improve operational discipline in PEMEX with LAGS Methodology. -- ICIS: a model for context-based classification of sensitive personal information -- Transformational Leadership in universities during the Pandemic by SARS-CoV-2 -- Detection of Mental Health Symptoms in the Written Language of Undergraduate Students using a Microblogging Platform -- Neural Network-Based Load Identification for Residential Electrical Installations. A review and an online experimental application -- Interactions in the digital learningecosystem in teacher learning outcomes -- CRAG: A Guideline to perform a cybersecurity risk audits -- Adversarial attack versus a bio-inspired defensive method for image classification -- Technological tools for inventory control in FAC warehouses.