<XML><RECORDS><RECORD><REFERENCE_TYPE>0</REFERENCE_TYPE><REFNUM>8463</REFNUM><AUTHORS><AUTHOR>Dubois,E.</AUTHOR><AUTHOR>Gray,P.</AUTHOR><AUTHOR>Nigay,L.</AUTHOR></AUTHORS><YEAR>2003</YEAR><TITLE>ASUR++: Supporting the design of mobile mixed systems</TITLE><PLACE_PUBLISHED>Interacting with Computers, Volume 15, Issue 4</PLACE_PUBLISHED><PUBLISHER>Elsevier Science</PUBLISHER><PAGES>497-520</PAGES><LABEL>Dubois:2003:8463</LABEL><KEYWORDS><KEYWORD>ubiquitous systems</KEYWORD></KEYWORDS<ABSTRACT>In this paper we present ASUR++, a notation for describing, and reasoning about the design of, mobile interactive computer systems that combine physical and digital objects and information: mobile mixed systems. ASUR++ helps a designer to specify the key characteristics of such systems and to focus on the relationship between physical objects and actions and digital information exchanges. Following a brief introduction to the notation, we illustrate its potential usefulness via examples based on the design of an augmented museum gallery. We conclude with a consideration of the integration of ASUR++ into the system development process and its augmentation via associated methods and tools.</ABSTRACT></RECORD></RECORDS></XML>