Chalid Nalampoon creator Vilas Wuwongse Chairperson Vatcharaporn Esichaikul Examination Committee Janecek, Paul Examination Committee RTG Fellowship Scholarship donor text series technical report th Pathum Thani, Thailand Asian Institute of Technology 2005 continuing eng 33 p. : ill. This thesis proposes a framework as an extension to an access control markup language (XACML) to be able to handle and utilize spatial/temporal information at its best. The information is associated to subjects that request access to the system. The framework is implemented based on XML Declarative Description (XDD) using XML Equivalent Transformation (YET) as a tool for programming. Evaluation process is done by comparing the proposed framework with two prominent implementations; Sun's XACML implementation and Parthenon's XACML Evaluation Engine. A hospital related scenario is chosen for building a prototype A thesis submitted in pa1tial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies Thesis (M. Eng.) - Asian Institute of Technology, 2005 Spatial systems Access control XML (Document markup language) Access control Asian Institute of Technology. http://203.159.5.9/ait-thesis/detail.php?q=B09465 http://203.159.5.9/ait-thesis/detail.php?q=B09465 060428 20260817161400.0