Many studies applying Brain-Computer Interfaces (BCIs) based on Motor Imagery (MI) tasks for rehabilitation have demonstrated the important role of detecting the Event-Related Desynchronization (ERD) to recognize the user's motor intention. Nowadays, the development of MI-based BCI approaches without or very few calibration stages session-by-session for different days or weeks is still an open and emergent scope. In this work, a new scheme is proposed by applying Convolutional Neural Networks (CNN) for MI classification, using an end-to-end Shallow architecture that contains two convolutional layers for temporal and spatial feature extraction. We hypothesize that a BCI designed for capturing event-related desynchronization/synchronization (ERD/ERS) at the CNN input, with an adequate network design, may enhance the MI classification with less calibration stage. The proposed system using the same architecture was tested on three public datasets through multiple experiments, including both subject-specific and nonsubject-specific training. Comparable and also superior results with respect to the state-of-the-art were obtained. On subjects whose EEG data were never used in the training process, our scheme also achieved promising results with respect to existing non-subject-specific BCIs, which is other progress to facilitate the clinical application.

X-ray methods have proven to be reliable, accurate and sensitive techniques to study activated carbons. The studying of granular activated carbon (GAC) samples through X-ray digital radiographic images using Deep Learning, more specifically convolutional neural networks (CNN) class of model, has been explored. Results were compared to hand-engineered characterization using X-Ray absorption method (XRA). It was proved that CNNs represent a fast and reliable analytical tool for indirect information on the chemical and physical characteristics of GACs. The proposed method opens possibilities for the application of Deep Learning based models on radiographic images for the characterization and comparison of exhausted and virgin porous materials.