Abstract: Log-periodic dipole array (LPDA) is always plagued by the gain anomaly together with pattern deflection caused by unbalanced coaxial feeding—an issue without a universal solution. In this ...
Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.
How a 1950s study of social class and mental illness in New Haven changed the way people thought about mental health.
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