The $L^2$ theory of the $\bar\partial$ operator on domains in $\mathbb{C}^n$ is predicated establishing a good basic estimate. Typically, one proves not single estimate but family estimates that we call strong closed range estimates. Using this $(0,q)$-forms as our starting point, establish necessary geometric and potential theoretic conditions. The paper concludes with several applications. ...

the radars that use medium prf, have either range ambiguity or doppler ambiguity, but these ambiguities can be resolved with selecting a prf set. avoiding ghost targets detection and minimizing blind zones are two important points that we should consider in targets detection. then, using this set, coincident algorithm and clustering the closely detected points, we resolve ambiguity and detect t...

Novel reconfigurable frequency selective surfaces (RFSS) are designed using a finite-difference time-domain with periodic boundary condition (FDTD/PBC) algorithm. The FSS are reconfigured using two techniques: the first technique providing a wide frequency tuning range is based on using diodes to change the current distribution over the FSS surface, and the second technique exhibiting a finer f...