\(F_{\text{SKj}}=\sum_{i}{F_{SRi,SKj}+F_{Fw,SKj}}\text{\ \ \ }\forall\ j\) (1)
\(\sum_{i}{F_{SRi,SKj}C_{\text{SRi}}+F_{Fw,SKj}C_{\text{Fw}}\leq F_{\text{SKj}}Z_{\text{SKj}}\text{\ \ \ }\forall\ j\ \ \forall\ k}\) (2)