Cultural Studies -- Progress on Yindjibarndi Ethnophysiography -- Study of Cultural Impacts on Location Judgments in Eastern China -- Cross-Cultural Similarities in Topological Reasoning -- Thalassographeïn: Representing Maritime Spaces in Ancient Greece -- Semantics -- From Top-Level to Domain Ontologies: Ecosystem Classifications as a Case Study -- Semantic Categories Underlying the Meaning of ‘Place’ -- Spatial Semantics in Difference Spaces -- Similarity -- Evaluation of a Semantic Similarity Measure for Natural Language Spatial Relations -- Affordance-Based Similarity Measurement for Entity Types -- An Image-Schematic Account of Spatial Categories -- Mapping and Representation -- Specifying Essential Features of Street Networks -- Spatial Information Extraction for Cognitive Mapping with a Mobile Robot -- Spatial Mapping and Map Exploitation: A Bio-inspired Engineering Perspective -- Scale-Dependent Simplification of 3D Building Models Based on Cell Decomposition and Primitive Instancing -- Perception and Cognition -- Degradation in Spatial Knowledge Acquisition When Using Automatic Navigation Systems -- Stories as Route Descriptions -- Three Sampling Methods for Visibility Measures of Landscape Perception -- Reasoning and Algorithms -- Reasoning on Spatial Semantic Integrity Constraints -- Spatial Reasoning with a Hole -- Geospatial Cluster Tessellation Through the Complete Order-k Voronoi Diagrams -- Drawing a Figure in a Two-Dimensional Plane for a Qualitative Representation -- Navigation and Landmarks -- Linguistic and Nonlinguistic Turn Direction Concepts -- A Uniform Handling of Different Landmark Types in Route Directions -- Effects of Geometry, Landmarks and Orientation Strategies in the ‘Drop-Off’ Orientation Task -- Uncertainty and Imperfection -- Data Quality Ontology: An Ontology for Imperfect Knowledge -- Triangulation of Gradient Polygons: A Spatial Data Model for Categorical Fields -- Relations in Mathematical Morphology with Applications to Graphs and Rough Sets.