You’ve probably used SUM a thousand times. Everyone has. SUM is fine for school assignments and tiny tables, but in the real ...

Learn how to sum and count Excel cells by color with 3 easy methods. Save time, reduce errors, and boost your data analysis ...

In this paper, a vector sum phase shifter system has been implemented using a novel RF variable directional coupler. The variable coupler uses micro-fluidics to vary the coupling between the through ...

In this paper, backstepping for a class of block strict-feedback nonlinear systems is considered. Since the input function could be zero for each backstepping step, the backstepping technique cannot ...