**3. Sensitivity Analysis**

In structural reliability, the key quantities of interest are the failure probability *P<sup>f</sup>* and the design quantiles *F<sup>d</sup>* and *Rd*. In order to analyse the reliability, ROSA must be focused on the same key quantity of interest: *P<sup>f</sup>* , *Fd*, and *Rd*. Local and global types of ROSA are applied in this article.
