https://s3.us-east-1.amazonaws.com/libra-easystore-production.lib.virginia.edu/libraetd/tb09j625m/1_Broach_Alison_2019_PHD.pdf?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Checksum-Mode=ENABLED&X-Amz-Credential=AKIAIKM6AN7XWPD7CIUA%2F20260820%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20260820T060611Z&X-Amz-Expires=3600&X-Amz-SignedHeaders=host&x-id=GetObject&X-Amz-Signature=ffe817a4fbcc361e5da8ede0a8ab9475af8969aede8727da571e2edd7160db6c