1. Pyrena: Closing the semantic gap for access control in web-based content management systems Open Access Author: Bergstein, Adam Title: Pyrena: Closing the semantic gap for access control in web-based content management systems Graduate Program: Computer Science and Engineering Keywords: content management systemsaccess controlsecurity File: Download YourName-Dissertation.pdf Committee Members: Trent Ray Jaeger, Thesis Advisor/Co-AdvisorDr Patrick Mc Daniel, Thesis Advisor/Co-Advisor