Data security in a mobile context is a critical issue. Over the last few years a new category of location-based services, the Enterprise LBS (ELBS), has emerged focusing on the demands of mobility in organisations. These applications pose challenging requirements, including the need of selective access to ELBS based on the position of mobile users and spatially bounded organisational roles. To ...

The last two decades have shown a major shift from stand-alone software systems to networked ones. As with all information system domains, Geographic Information Systems (GISs) have been influenced to a large extent by recent internet developments, resulting in an increasing availability of client/server applications using distributed geo-(web-)services, such as interactive maps, route planners...

Light detection and ranging technology allows for the creation of detailed 3D point clouds physical objects environments. Therefore, it has potential to provide valuable information operation various kinds cyber-physical systems that need be aware of, interact with, their surroundings, such as autonomous vehicles robots. Point can also become basis digital representations different assets a sys...

In the last few years, network construction from climate data has developed to a promising analysis method. We discuss challenges for the interactive visual analysis of such geo-referenced networks and present first ideas for addressing the challenges. In particular, we present visualizations of 3D geo-spatial networks and of large networks within cartographic contexts.

According to EuroGeoSurveys, the European Geological Surveys association, “Geological spatial data and models describe the solid Earth’s surface and subsurface on-shore and off-shore, its nature, structure, properties, dynamics and evolution over time; including its related (geo)resources and (geo) hazards”. This illustrates a modern vision of the core mission that National Geological Surveys h...

When multiple geo-spatial datasets are integrated, the process should be done in several stages. In each stage two datasets are fused to one. Since different sequences may lead to different results, it is important to select a sequence that would lead to the required results. Two approaches, namely the sequential and hierarchical, for selecting the sequence are presented, and their results are ...

Capturing application semantics and allowing a human analyst to express his focus in mining have been the motivation for several recent studies on constrained mining. In this paper, we introduce and study the problem of constrained clustering| nding clusters that satisfy certain user-speci ed constraints. We argue that this problem arises naturally in practice. Two types of constraints are disc...

Advance increasing interest in large-scale, highresolution, real-time geographic information system (GIS) applications and spatial big data processing, traditional GIS are not efficient enough to handle due to limited computational capabilities. Geospatial analytics in big data needed new approaches that are flexible, non-parametric and should be able for dynamic modeling with non-linear proces...