https://s3.us-east-1.amazonaws.com/libra-easystore-production.lib.virginia.edu/libraetd/736665106/1_Moffat_William_2019_MS.pdf?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Checksum-Mode=ENABLED&X-Amz-Credential=AKIAIKM6AN7XWPD7CIUA%2F20260917%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20260917T041140Z&X-Amz-Expires=3600&X-Amz-SignedHeaders=host&x-id=GetObject&X-Amz-Signature=af5725ae446b875f097c45c238364e6db1a861aa77e9305a6d8961f125890345