https://s3.us-east-1.amazonaws.com/libra-easystore-production.lib.virginia.edu/libraetd/7p88ch03c/1_Burkhardt_Andrew_2018_PHD.pdf?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Checksum-Mode=ENABLED&X-Amz-Credential=AKIAIKM6AN7XWPD7CIUA%2F20260812%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20260812T221156Z&X-Amz-Expires=3600&X-Amz-SignedHeaders=host&x-id=GetObject&X-Amz-Signature=d92a157fa74a78c4e2b180a3b9450d488eccc96d800829e5cdcc2ecb573c41c9