Derivative source method for local sensitivity analysis

[ilhamv]

The method is based on this paper.

[clemekay]

From the 05/07/2025 document "MC/DC Plans Through the End of CEMeNT" :

There are several particular things need to be done before finalizing the implementation and reporting on a journal article: (1) verifying the second-order sensitivity to object dimension, and (2) comparing to the other sensitivity methods, especially differential operator sampling, CLUTCH, and the one developed by Richard Lehoucq and the SNL team. If time permits, we will also consider several improvement items, including weight window techniques for DSM and DSM application for eigenvalue problems.