We present a method to enhance the accuracy of platform-based, high-frequency (HF) direction-finding (DF) systems using dynamic mode selection.To improve bandwidth and efficiency, the metallic platform supporting the DF array is used as the primary radiator by employing electrically small antennas to excite linearly independent combinations of its
To date the use of computers is widely distributed throughout the world and the associated ocular complaints are found in 75-90% of the population of computer users.Symptoms frequently reported by computer users were eyestrain, tired eyes, irritation, redness, blurred vision, diplopia, burning of the eyes, and asthenopia (visual fatigue of the eyes
We study how functional constraints bound and shape evolution through an analysis of john tory hair mammalian voltage-gated sodium channels.The primary function of sodium channels is to allow the propagation of action potentials.Since Hodgkin and Huxley, mathematical models have suggested that sodium channel properties need to be tightly constraine
Energy dissipation systems in civil engineering structures are sought when manley variable mu it comes to removing unwanted energy such as earthquake and wind.Among these systems, there is combination of structural steel frames with passive energy dissipation provided by Fluid Viscous Dampers (FVD).This device is increasingly used to provide better