Abstract: The ability of coupled, nonlinear oscillator arrays to produce simultaneous beam steering and null generation is presented. This technique, which extends the capabilities of such arrays to ...

In this direction, electrically steerable parasitic array radiator (ESPAR ... the SPA yields a wide beam and a null in the opposite direction. By selecting different sets of three consecutive ...

Common ductwork noises; how to overseed a dead lawn; repairing cracked foundation stucco. Ross Trethewey explains common nuisance noises that can come from ductwork and offers some solutions; Lee ...

And Mauro helps a homeowner remove some scaly shellac. Mark: Oh, my gosh. Arch: Oh, wow. Mark: It came right off. Kevin: On "Ask This Old House." Ross: I'm headed to Miami, Florida, to help a ...