This paper resulted from a collaborative work between Alexander Walkowski and me, in which we tried to connect our PhD theses. We tired to identify the five big changes/revolutions that Information and Communication Technology (ICT) will undergo in the advent of sensor networks. Although this work has only been presented six years ago, the first revolution (interaction with coverages) has already partially been implemented in the context of the OGC Sensor Observation Service (SOS) and the... Read full post
During a traineeship at the Joint Research Centre (JRC) of the European Commission, I was pointed to the challenges of schema heterogeneity. This paper investigates some of the arising issues in the context of integrating Member State data at European level. It suggests a first approach to analyze existing attributes definitions of diverse data models using a shared domain ontology. Arising possibilities to infer matches are outlined using protected sites as an example. This publication... Read full post
Coming from first analysis on the semantics of sensor results (performed during my diploma thesis), this paper provides initial investigations on interoperability in the Sensor Web. It provides a brief overview of the relatively novel Observation and Measurements (O&M) standard of the Open Geospatial Consortium (OGC), outlines problems on defining the semantics of sensing results, and points to the few related ontologies, which were available at that time. Although progress has been made,... Read full post
This publication resulted from my diploma thesis, which I wrote in a tandem with Arnd Sahlmann. We tried to understand the difference between what is not the ‘classical’ Semantic Web approach of describing processing components and the approach of algebraic specifications coming from standard software engineering. Compared to logic-based reasoning, functional specifications provide a handy alternative to formal modeling. Functional programming languages (such as Haskell) make the... Read full post
In 2003, I had my first publication (German only). It presented the outcomes of a study project, where we developed a Spatial Data Infrastructure (SDI) including services for the prediction of gas dispersion and emergency routing. By the time, only few standard Geospatial Web Services were available. Nevertheless, we could prove a solution for stateless chaining.
Dr. Charvat, Präsident des "Czech Center for Sciences and Society", hat eine interessante Fragestellung auf dem Social network "LINKEDIN" (Registrierung ist erforderlich!) eingestellt:
What is a Geoportal?
With the implementation of different solutions called Geoportal, I recognize,
that there doesn’t exist, what is a Geoportal and what is the role of
... Read full post
Given the New Year and that I recently read this article: http:/
the forthcoming GI2011-X-border-SDI/GDI-Symposium ( "11. Sächsisches GIS-Forum" ) will be in year 2011 a real Cross-border event, to be held 23./24.05.2011 in "Bohemia&Saxonia Switzerland", the National Park Zentrum of Euroregion "Elbe/Labe" (EEL) on both sides of the border between Bad Schandau (SAX) and Decin (CZE).
The OPEN CALL for Presentations & Posters for GI2011 has been... Read full post
An intersesting blog entry by Amalia Velasco on the ePSIplusplatform discusses the synergy between INSPIRE and
'All the cadastral and geographical organizations are making significant efforts to harmonize our data and to provide services as the INSPIRE Directive demands. The implementation of the INSPIRE Directive contributes also to the application of the PSI principles. The document below is part of a study of costs-benefits analysis of INSPIRE in the Netherlands,... Read full post