Modify title section and member page


I would like modify the title for the sections and the member pages on my forum.


1. For the sections of my forum I want add the word "Forum" before of the name of section:

So, for the section "tecnology", the title will be:

Forum Tecnology

2. For the member pages, I want this type of title:

Name Member - Profile on Name of my site

What template should I modify to make this? Can you help also on what variables use?