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Computer architecture. Operating systems --- Information systems --- Computer. Automation --- ICT (informatie- en communicatietechnieken) --- IR (information retrieval) --- multimedia --- informatiesystemen --- database management --- computernetwerken

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These proceedings contain the papers selected for presentation at the Seventh International Symposium on Web and Wireless Geographical Information Systems (W2GIS 2007). The symposium was organized locally by the University of Glamorgan (UK) and held in Cardiff (UK) in November 2007. It was the latest in a series of annual events that started in Kyoto 2001 and now alternate locations each year between East Asia and Europe. As in previous years, the aim of the symposium was to provide an up-to-date review of advances and recent developments in theoretical and technical issues relating to Web and wireless GIS technologies. The symposium organizers received 45 full papers in response to the call for papers. These papers went through a thorough review process, with each paper being assessed by at least three reviewers. The quality of papers was high, and 21 were selected for presentation and inclusion in these proceedings. It was particularly pleasing to note that 19 different countries are represented by the authors of selected papers. The keynote address was delivered by Jonathan Raper of City University, London, in which he talked about his research work in the areas of location-based services and mobile information needs. We wish to thank all the authors that submitted papers to this symposium. Our special thanks go to all those who attended, and particularly those who presented.

Geographic information systems --- World Wide Web --- Wireless Internet --- Mobile computing --- Systèmes d'information géographique --- Web --- Internet mobile --- Informatique mobile --- Congresses. --- Congrès --- Computer Science --- Geography-General --- Engineering & Applied Sciences --- Geography --- Earth & Environmental Sciences --- Computer science. --- Computer communication systems. --- Database management. --- Information storage and retrieval. --- Multimedia information systems. --- Computer Science. --- Database Management. --- Information Storage and Retrieval. --- Information Systems Applications (incl. Internet). --- Multimedia Information Systems. --- Computer Communication Networks. --- Computer-based multimedia information systems --- Multimedia computing --- Multimedia information systems --- Multimedia knowledge systems --- Information storage and retrieval systems --- Data base management --- Data services (Database management) --- Database management services --- DBMS (Computer science) --- Generalized data management systems --- Services, Database management --- Systems, Database management --- Systems, Generalized database management --- Electronic data processing --- Communication systems, Computer --- Computer communication systems --- Data networks, Computer --- ECNs (Electronic communication networks) --- Electronic communication networks --- Networks, Computer --- Teleprocessing networks --- Data transmission systems --- Digital communications --- Electronic systems --- Information networks --- Telecommunication --- Cyberinfrastructure --- Network computers --- Informatics --- Science --- Distributed processing --- Information storage and retrieva. --- Multimedia systems. --- Information storage and retrieval systems. --- Automatic data storage --- Automatic information retrieval --- Automation in documentation --- Computer-based information systems --- Data processing systems --- Data storage and retrieval systems --- Discovery systems, Information --- Information discovery systems --- Information processing systems --- Information retrieval systems --- Machine data storage and retrieval --- Mechanized information storage and retrieval systems --- Computer systems --- Electronic information resources --- Data libraries --- Digital libraries --- Information organization --- Information retrieval --- Application software. --- Application computer programs --- Application computer software --- Applications software --- Apps (Computer software) --- Computer software

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Plant genetics. Plant evolution --- Plant ecology. Plant sociology --- Air pollution. Air purification