[Canadaoer] OER in Institutional Repositories

Hello, I have a question related to how people deal with open educational resources in their institutional repositories. We are trying to work through some details at UBC about how to efficiently describe OER in our institutional repository that prioritizes research materials. We were wondering if folks have suggestions for the following: Are there any best practices/processes you use for the metadata? Do you have particular Dublin Core fields and descriptors, keywords you use, or descriptive information that makes it easier to find within your repository? Thanks for any help you can give! Erin