Remote Restart Issue

I work in a network computer environment and recently everyone here has learned how to remote restart other users computers using administrator rights.
It is done through the cmd prompt the way we were shown.

My question is this. Is there anyway to change security settings or prevent people from being able to remote shutdown your computer? If not, is there anyway to figure out who is doing this? Possibly a shutdown log or something of that nature.

Working in an office environment like this and having someone who's messing around, if you dont save your work every 5 minutes your work gets flushed.

Any help would be appreciated