Comparing machine learning vs. humans for dietary assessment -- A method to identify graphs containing a specific subgraph -- A Scalable Smart Lighting Framework to Save Energy -- Papal Teaching on the Ethical Challenges of Artificial Intelligence -- European Union fosters ethical AI in the Public Administration -- Bias Analysis on Twitter -- Population-based methods to reduce the colors of an image -- Use of YOLOv4 and Yolov4Tiny for intelligent vehicle detection in Smart City environments. .