1. Editorial

   • Flavio Bonfatti

   Editorial Introduction Pages: 251 - 252

2. Distributed Spatial Catalog Service on the CORBA Object Bus

   • Bin Li
   • Li Zhang

   OriginalPaper Pages: 253 - 269

3. A Conceptual Model for a Feature-Based Virtual Network

   • Chenghu Zhou
   • Feng Lu
   • Qing Wan

   OriginalPaper Pages: 271 - 286

4. VARIANT: A System for Terrain Modeling at Variable Resolution

   • Leila De Floriani
   • Paola Magillo
   • Enrico Puppo

   OriginalPaper Pages: 287 - 315

5. Fast Range Searching with Delaunay Triangulations

   • Binhai Zhu

   OriginalPaper Pages: 317 - 334