The potential condition of fishery sector is indeed quite large in Central Bangka Regency. majority fishermen Regency still use traditional fishing gear and simple technology. number units used consists 370 lift net, 1,085 gillnets, 129 bubu, 60 sero, 125 rods 4 beach seines with a fleet 1,767 (DKP 2019). These types need to be assessed for performance selected superior as form optimizing find ...

In the present article, we give a method to deal with Dahlberg-Kenig-Pipher (DPK) operators in boundary value problems on upper half plane. We nice subclass of weak DKP that generates full class under action bi-Lipschitz changes variable <m...