1) |
\log _{10}\left(C_{tk}^{*}\right)=\left\{\begin{array} M+N\log _{10}\left[\frac{S_{f}}{\omega _{sk}}\left(U-U_{crk}\right)\right]\,\,\,\,\mathrm{for}\,\,U>U_{crk}\,\,\\ 0\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\text{otherwise} \end{array}\right. |