[mlagoo]

The second one is an absolute no brainer -- you don't have any FE in the future either -- after this hand you'll be at like 2xBB in the SB. So that's a definite push.

The first one is a BIT more interesting, because you would still have like 4xBB after folding and posting the SB, but I think it's still a push.

The fact of the matter is that in both of these situations, you really don't have FE in your future, so you may as well take this situation where you rate yourself ahead of opponent's range and put all your chips in.

edit: Misread and thought you were BB in the second one. The second one looks to be a definite fold.