1. Editorial: Quality is the Future of Geoprocessing

   • John Herring

   Editorial Introduction Pages: 323 - 325

2. Graphical Information Portals—The Application of Smart Maps in G≻eoN≻et 4D

   • Gertraud Peinel
   • Thomas Rose

   OriginalPaper Pages: 327 - 344

3. Progressive Transmission of Vector Map Data over the World Wide Web

   • Michela Bertolotto
   • Max J. Egenhofer

   OriginalPaper Pages: 345 - 373

4. Spatio-Temporal Modeling in Video and Multimedia Geographic Information Systems

   • Niki Pissinou
   • Ivan Radev
   • Kia Makki

   OriginalPaper Pages: 375 - 409