Abstract: Three-dimensional (3D) radio environment maps (REMs) can visually represent the spectrum situation over the geographical maps, which facilitates the management of spectrum resources.

Add Yahoo as a preferred source to see more of our stories on Google. I’m on a board of The Columbus Foundation called the Green Fund, and each year, we pick grant recipients from a worthy pool of ...

Ribbit! is a free environmental magazine for young people, funded by grants and donations. The publication features articles on wildlife, geology and local nature events in the Columbus area. Produced ...

I’m on a board of The Columbus Foundation called the Green Fund, and each year, we pick grant recipients from a worthy pool of requestors. Our focus is on the environment, including educational ...