List of Figures

Chapter I: Geospatial Web Services

Figure 1: Web service protocol stack (Source Tsalgaticlou & Pihoura 2002; Wilkes, 2005)
Figure 2: Geospatial Web service standard stack (Source ISO/TC211, 2005; Nebert, 2005; OGC, 2005a)
Figure 3: Overall architecture of OGC geospatial Web services (Source Nebert, 2005)
Figure 4: Geospatial Web Registry Server
Figure 5: A simplified illustration of ebXML information model (Source OASIS/ebXML, 2003)
Figure 6: Crawler-based geospatial Web service discovery
Figure 7: Typical composite processes for service chaining
Figure 8: Transparent geospatial Web service chaining (Source Alameh, 2001)
Figure 9: Translucent geospatial Web service chaining (Source Alameh, 2001)
Figure 10: Opaque geospatial Web service chaining (Source Alameh, 2001)
Figure 11: Part of the statistical summary of OGC specification or interface implementations (Source OGC, 2005b)
Figure 12: Data and their semantic hierarchy (Source Sheth, 1999, 2003; Sivashanmugam et al., 2003)

Figure 1: Components of an information system design theory
Figure 2: Prot g ontology editor and knowledge acquisition system newspaper example
Figure 3: Spatial information system ontology proximate commuting system instance
Figure 4: Concepts and theories ontology
Figure 5: Geographic services ontology
Figure 6: Advanced traveler information systems ontology
Figure 7: Application domains ontology
Figure 8: Spatial information system ontology library

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