Satja Hongyok creator Vilas Wuwongse Chairperson Janecek, Paul Examination Committee Vatcharaporn Esichaikul Examination Committee Asian Institute of Technology Fellowship Scholarship donor text series technical report th Pathum Thani, Thailand Asian Institute of Technology 2005 continuing eng 41 p. : ill. The security is one of the most important issues in information protection of the digital repository system. The integration between access control and version control emerges as a new technique in security for a recent year. This thesis introduces a framework that enhances access control in the digital repository system by integrating access control and version control with time constraint. Even though previous access control researches mostly use subject attributes and resources attributes for a decision making, in this framework, only resource attributes and time constraint are used for requesting document construction. The access control policy document is created by analyzing a changed content in each version of protected documents. Moreover, the dependency of access control policy document and XML versioned relevancy-based access control are also introduced A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Advanced Technologies Thesis (M.Sc.) - Asian Institute of Technology, 2005 XML (Document markup language) Access control Digital libraries Access control Asian Institute of Technology. http://203.159.5.9/ait-thesis/detail.php?q=B09506 http://203.159.5.9/ait-thesis/detail.php?q=B09506 060502 20260817161400.0