Physics of Luxury Hotel in Outer Space

This book provides mechanics of advance material frame that would revolutionize material technologies to build luxury hotels in outer space with strutures that generate artifical gravity for centuries but science is also involved in understanding artificial greenhouse eco systems. Now the bottom of the circular frame can be used for more science. Since gravity is produced, in space there is no top and no bottom.
So, another building structure can be constructed at the bottom for other works that would understand how the structural dynamics can be improved and bigger artificial gravity sphere be constructed. It could also be a bio engineering laboratory.