Additional sources:
CC search
Open clip art
Duke’s Center for the Study of the Public Domain hosts this fascinating look into what could have entered the public domain in 2014 (had copyright law remained the same as it was in 1978).
When in doubt, contact me.
The tools provided by the Copyright Advisory Subcommittee of the ALA can be helpful when trying to understand the complexities of copyright.
Other resources:
Exceptions for Instructors eTool
Minnesota fair use analysis tool
Stanford Copyright & Fair Use Center
"The impact factor... was never intended to be used to evaluate individual scientists, but rather as a measure of journal quality. However, it has been increasingly misused in this way...
The misuse of the journal impact factor is highly destructive, inviting a gaming of the metric that can bias journals against publishing important papers in fields"
Bruce Alberts, Editor-in-Chief of Science.
More from the International Mathematical Union and others.
Learn about article level metrics here.