A Review on the Fabrication of Surface Composites via Friction Stir Processing and its Modeling using ANN -- A Statistical Study of Consumer Perspective Towards The Supply Chain Management of Food Delivery Platforms -- Design of an Auxiliary 3D Printed Soft Prosthetic Thumb -- Prediction of Material Removal Rate and Surface Roughness in CNC Turning of Delrin using various Regression techniques and Neural Networks and Optimization of Parameters using Genetic Algorithm -- Finding Accuracies of Various Machine Learning Algorithms by Classification of Pulsar Stars -- Fibre-Reinforced Composites and their Applications in Student Competitions: A Case Study.