High-speed train systems are rapidly growing in complexity and coverage, demanding
efficient high-speed internet services. Existing radio frequency technology struggles to meet …

This paper develops a novel communication method for an ultra-high-speed train that runs
in an evacuated tube. The proposed method significantly reduces the number of needed …

Today more than half of the world's population lives in cities not yet ready for the massive
growth and adaptation required to meet global urbanization predicted for the next decades …

En la actualidad, la inseguridad vial peatonal es un problema que aqueja a la población en
diversas ciudades del mundo. En Lima-Perú, la vida del peatón está en constante peligro …

An apartment is a place to live in a building, equipped with various facilities, and is a public
area inhabited by hundreds or even thousands of people. The security system in the …