"Person"@en . "Person"@en . "Education"@en . . . "Ruffin, Christopher"@en . . . _:b1 . _:b1 "initial version"@en . _:b1 "2023-09-11T14:43:24-05:00" . _:b1 "Laura Ramirez" . "Source: University of Houston Electronic Theses and Dissertations."@en . .