We address a dynamic covering location problem of an Unmanned Aerial Vehicle Base Station (UAV-BS), where the sequence single UAV-BS in wireless communication network is determined to satisfy data demand arising from ground users. This especially relevant context smart grid and disaster relief. The vertical movement ability non-convex functions restrict utilizing classical planar approaches. Th...

In this paper, we introduce a new hub-and-spoke structure for service networks based on round-trips as practiced by some transport providers. This problem is variant of Uncapacitated Hub Location Problem wherein the spoke nodes allocated to hub node form (cycles) starting from and ending node. motivated two real-life practices in logistics runaway connections with their associated economies sca...