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Auflistung nach Autor:in "Lehmann, Hanno"

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  • Konferenzbeitrag
    Easy Access to Environmental Information with PortalU
    (Managing Environmental Knowledge, 2006) Vögele, Thomas; Klenke, Martin; Kruse, Fred; Lehmann, Hanno; Riegel, Thomas
    Since the end of May 2006, PortalU, the new German Environmental Information Portal, is online. PortalU provides one-stop access to government-owned environmental information in Germany. The portal organizationally and technically integrates the access to a large number of heterogeneous and geographically distributed information sources. A user-friendly interface in addition to advanced searchand visualisation tools enables experts and nonexperts alike to find and view texts of national and regional legislation, information about environmental policies and programmes, environmental reports, monitoring data, digital maps, and many other types of environmental information and data. PortalU is part of the administration’s strategy to comply with the Arhus-Convention and EUDirective 2003/4/EC, both calling for better public access to environmental information. From a citizen’s point of view, the portal helps to find relevant information about the national, regional and local environment in a fast and effective way. PortalU replaces the former German Environmental Information Network (gein®) and integrates the Environmental Data Catalogue (UDK).
  • Konferenzbeitrag
    InGrid 1.0 – The Nuts and Bolts of PortalU
    (Managing Environmental Knowledge, 2006) Klenke, Martin; Kruse, Fred; Lehmann, Hanno; Riegel, Thomas; Vögele, Thomas
    After the official launch in May 2006, PortalU will act as the new internet portal of the German environmental authorities. The “U” in PortalU stands for “Umwelt”, the german word for the environment. PortalU will provide access to government-owned environmental information of the 16 federal German states and the German federal government. The application replaces the actual “German Environmental Information Network” gein® (Vögele et al. 2004). Moreover, the “Virtual-UDK” (Swoboda et al. 1999), currently acting as the top-level environmental metadata query component of the German environmental authorities, will be merged with PortalU. The well-established UDK metadata model, however, will retain its importance as de-facto standard within the environmental community in Germany. Hence, the ISO19115 and ISO19119 compliant model builds the basis of the metadata component of PortalU. The step from gein® and the Virtual-UDK to PortalU is accompanied by a complete technical redesign which will enhance the functionality of the PortalU predecessors in many aspects. This new set-up is needed to include, as required by the new EU-directive 2003/4/EC on public access to environmental information (EU 2003), a much larger number of providers of environmental information, including agencies on the local level. It is also needed to be able to provide better access to environmental information that is not yet online or belongs to the so-called “hidden web”. Our paper describes the concepts and architecture of the software behind PortalU: InGrid 1.0. The name InGrid relates to “Information Grid”, pinpointing to the distributed approach of the new system. To support direct access to environmental data and metadata, the new system architecture features distributed indices based on highly adaptable database interfaces and a self-administrating peer-to-peer communication infrastructure. A number of standardized interfaces, including a web catalog service conforming to ISO and OGC standards and recommendations enable PortalU and other InGrid information nodes in the network to benefit from and contribute to other data infrastructures, for example the German national geodata infrastructure GDI-DE and the EC INSPIRE initiative (RDM Working Group 2002).
  • Konferenzbeitrag
    PortalU® – a Tool to Support the Implementation of the European Environmental Information Directive
    (Environmental Informatics and Systems Research, 2007) Vögele, Thomas; Klenke, Martin; Kruse, Fred; Lehmann, Hanno; Giffei, Christiane
    With PortalU®, the environmental administration in Germany has created a technical tool in support of the implementation of the European Environmental Information Directive (EEID). PortalU® specifically addresses Article 7.1 of the directive which calls for an “active and systematic” dissemination of environmental information by “means of computer telecommunication and/or electronic technology”. PortalU® provides a central access point to web-sites, databases and online-registries of environmental information held by public authorities in Germany.