A Sterilization Unit includes: a UV-C radiation source configured to emit UV-C radiation； and a room partition selectably configurable between two or more different partition geometrics and configured, in each of the two or more different partition geometrics, to (a) physically separate floor space of a room into sterilization target area and a non-target area, and (b) direct the UV-C radiation to the target area from at least two different directions while shielding the non-target area from the UV-C radiation.
