100-year-old writes book about secret slave patterns used during Underground Railroad

Halifax County native Edith Edmunds stitches patterns in her quilts that represent codes that slaves used to navigate the Underground Railroad. She is releasing a new book called “Sacred Stitches” ...
IEEE

Computing Primitive of Fully VCSEL-Based All-Optical Spiking Neural Network for Supervised Learning and Pattern Classification

Abstract: We propose computing primitive for an all-optical spiking neural network (SNN) based on vertical-cavity surface-emitting lasers (VCSELs) for supervised learning by using biologically ...