I have a rottweiler puppy that will be 8 weeks old tomorrow. she is very sweet natured most of the time, but she gets aggressive with me, bites and growls at me for no apparent reason. She even tried to hump me yesturday, which i no is a sign of dominance. she doesnt do this with my partner. when she is being aggressive towards me, i tell her no, move her away and i fold me arms so she cant get my hands. when i do this though, she bites my arms. she doesnt listen to me, but when my partner tells her no, she lkistens to him!

what can i do to stop her being aggressive with me?
has anyone else had any problems with their rottweilers behaviour?