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Abstract: Intelligent reflecting surface (IRS) is an enabling technology to engineer the radio signal propagation in wireless networks. By smartly tuning the signal reflection via a large number of ...

The silver mines of the Cerro Colorado Mining district in Santa Cruz County have attracted the attention of miners who worked the narrow quartz veins in sedimentary volcanic rocks for several hundred ...

Tucson once had an Indian School and a street named after it — but both are gone. On August 24, 1886, T.C. Kirkwood, superintendent of the Board of Home Missions of the Presbyterian Church, petitioned ...