“Early humans used chewing sticks, twigs, bird feathers, animal bones, and plant fibers to remove debris from their teeth,” ...

Abstract: The vehicle routing problem with backhauls (VRPBs) is a challenging problem commonly studied in computer science and operations research. Featured by linehaul (or delivery) and backhaul (or ...

Imagine hopping in a time machine and telling someone a hundred years ago that today, if you can afford it, you could walk ...

Imagine hopping in a time machine, going back a century, and telling someone that today, if you have the money for it, you ...