Over the past decade, rapid advances in web technologies, coupled with innovative models of spatial data collection and consumption, have generated a robust growth in geo-referenced information, resulting in spatial information overload. Increasing ‘geographic intelligence’ in traditional text-based information retrieval has become a prominent approach to respond to this issue and to fulfill us...

There has been an increasing interest for what could be designated as 3D Cartography or 3D Geographical Information Systems which led to the development of web based technologies for visualization and interaction of 3D city models. The Open Geographic Consortium came out with the City Geography Markup Language as a industry standard for the modelling of city landscapes and the web 3D Consortium...

Geographic Information Systems (GIS) are moving from isolated, standalone, monolithic, proprietary systems working in a client-server architecture to smaller web-based applications and components offering specific geo-processing functionality and transparently exchanging data among them. Interoperability is at the core of this new web services model. Compliance with Open Specifications (OS) ena...

A recent development in Geographic Information Systems is the use of crowd-sourcing to acquire and share information that was difficult to collect, organize and update in the past. Taking into consideration that the people entering data into the system might not have geographic training, an important concern is related to accessibility. In this paper we propose an algorithm for evaluating acces...

BACKGROUND AND OBJECTIVES: The study explored the capability of the geographic information system interface for the water erosion prediction project, a process-based model, to predict and visualize the specific location of soil erosion and sediment yield from the agricultural watershed of Taganibong. METHODS: The method involved the preparation of the fou...