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 ...

tutorial for making simple jewelry from copper wire from LanAnhHandmade In this video you will learn how to make a simple flower ring from spherical stones and small sparkling crystals. The method is ...

Want to attract hummingbirds to your yard? More than 300 species of hummingbirds exist worldwide. However, only about 18 are regularly found in the U.S., including nine common species in Texas. By ...

Ten species of hummingbirds have been seen in San Diego County; most of them are just migrating through the area. However, three Sand Diego resident hummingbird species can be spotted in the area on a ...