https://s3.us-east-1.amazonaws.com/libra-easystore-production.lib.virginia.edu/libraetd/6m311p68v/1_Wilson_Katy_2018_PHD.pdf?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Checksum-Mode=ENABLED&X-Amz-Credential=AKIAIKM6AN7XWPD7CIUA%2F20260817%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20260817T131539Z&X-Amz-Expires=3600&X-Amz-SignedHeaders=host&x-id=GetObject&X-Amz-Signature=4141c810fb8f87caec3ea57475200a593203654128dcaadca928f9f7c73ec574