Arrow vanes, devices and methods for improving arrow vane airfoils for compound arrows, crossbow arrows and traditional arrows, which improves flight characteristics over traditionally manufactured, configured andor applied vanes. In characteristic manner, said flange presents a top end of crenellated outline provided with at least one notch, said root is provided with a front rim of crenellated outline, having at least one mortise, and a rear rim between which rims there is formed an annular groove for receiving the ring which presents an axial tenon suitable for penetrating into said notch and into said mortise. The scheduler routes and load balances the traffic to the other DLBA servers in the array. The target voltage level of the power may be dependent on both a current level of the power and the power state signal. Memory cells may be tested for different threshold voltages by applying different gate-to-source voltages to memory cells being tested for different threshold voltages. The plurality of subcarriers are allocated to the at least one subscriber device based on at least one optimum value of the set of optimum values.