Digital Elevation Models (DEM) and 3D spatial data plays an important role in typical earth science applications. Numerous simulations, e.g. flood modeling, and spatial analysis, requires very exact terrain data. During the acquisition of these data, for an example by means of laserscanning, very large data sets results due to the high measuring point density (up to four points per square meter...

Spatial Data Infrastructures (SDIs) provide access to geospatial data and operations through interoperable Web services. These data and operations can be chained to set up specialized geospatial business processes, and these processes can give support to different applications. End users can benefit from these applications, while experts can integrate the Web services in their own business proc...

Mapping data using geostatistics can be a time-consuming process because of the many parameters to define. automap, a geostatistical package written in R, was developed to define automatically a spatial correlation model, a step that is considered to be the biggest obstacle for automating the spatial interpolation process with geostatistical algorithms. The implementation of automap into a Serv...

In the literature a number of taxonomies are present which categorize the functions of GIS. While such taxonomies used to be more of scientific interest they are now getting more practical relevance due to the adoption of the OGC Web Processing Service (WPS) specification. While this standard currently allows specifying arbitrary geoprocessing functionalities, for ensuring interoperability we a...

Flooding in general is insignificant event worldwide and also in Thailand. The Central plain, the Northern plain and the northeast of Thailand are frequently flooded areas, caused by yearly monsoons. The Thai government has extra expenditure to provide disaster relief and for the restoration of flood affected structures, persons, livestock, etc. Current flood detection in real time or near real...

Abstract. This paper discusses the state of art in Geodesign, as a result from evolution use geospatial data for shared and co-creative planning. The Geographic Information Systems (GIS) led to significant advances geovisualization, cartographic via Internet construction SDIs (Spatial Data Infrastructures). These fostered emergence Geodesign one foundations territorial text will also introduce ...

The latest issues in simulating and analyzing different Earth Science phenomena require the development of complex algorithms, based on satellite images in different formats. The main goal of this paper is to process these data in a standard manner and to automatically publish the execution results by using the latest Web Processing Services (WPS). The development of these services needs to be ...

  Network and processing overhead associated with web services is a significant challenge to its performance. As a result, web service providers often announce a service level agreement. This ensures that consumers, who pay for the service, can get the service at a given quality level. In this paper, we study the competition between two providers offering functionally the same web services, whe...

quality of service (qos) is an important issue in the design and management of web service composition. qos in web services consists of various non-functional factors, such as execution cost, execution time, availability, successful execution rate, and security. in recent years, the number of available web services has proliferated, and then offered the same services increasingly. the same web ...

The recently approved OGC Web Processing Service (WPS) specification defines a generic interface for providing geo-processing functionality in a standardized way. Web Services in general can be composed in service chains for carrying out more complex tasks. This paper presents an approach for offering a chaining tool for WPS processes in a simple as possible way. Basic functionalities can be co...