Regional officials have confirmed at least 40 people are dead after a high-speed rail collision in southern Spain. The crash ...

Spanish police say at least 39 people are confirmed dead in a high-speed train collision in the south of the country. The ...

Abstract: A safe time-varying formation (TVF) control framework is proposed in this article for heterogeneous multiagent systems under the constraints of denial of service (DoS) attacks, ...

Abstract: In the contemporary landscape, the escalating deployment of drones across diverse industries has ushered in a consequential concern, including ensuring the security of drone operations. This ...

When the solar system began to form, everything was chaos. A slew of rocky material was smashing together in a maelstrom that would eventually become the baby protoplanets, comets and asteroids that ...