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Auflistung nach Autor:in "Klenke, Martin"

1 - 10 von 20
  • Konferenzbeitrag
    A New and Flexible Architecture for the German Environmental Information Network
    (Informatics for Environmental Protection - Networking Environmental Information, 2005) Vögele, homas; Klenke, Martin; Kruse, Fred; Groschupf, Stefan
    Since the year 2000, the German Environmental Information Network gein® provides access to government-owned environmental information of 15 German federal states and the German federal government. In response to the new requirements for public access to environmental information based on EU-directive 2003/4/EC, gein® currently undergoes a complete technical re-design. The resulting new software (InGrid 1.0) will be used to build Portal-U, an improved central information portal which replaces gein®. In addition, InGrid offers state- and municipal authorities a tool to set up their own information portals and to construct a flexible network of interconnected information nodes. This new technical infrastructure is needed to include, as required by the EU-directive, 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”. 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 P2P communication infrastructure. A number of standardized interfaces, including a web catalog service conforming to OGC standards, enable Portal-U and other information nodes in the network to benefit from and contribute to other data infrastructures, like the German national geodata infrastructure (GDI-DE) and INSPIRE.
  • Konferenzbeitrag
    Approach to Build a Soil Information Portal for Europe Based on the PortalU Technology
    (Proceedings of the European conference TOWARDS eENVIRONMENT, 2009) Uhrich, Stefanie; Klenke, Martin; Kruse, Fred; Giffei, Christiane
  • Konferenzbeitrag
    Aufbau eines europäischen Bodeninformations-Portals im Rahmen des eContentplus-Projekts GS Soil als Baustein für SEIS auf Basis von PortalU®-Technologie
    (Integratives Datenmanagement – Beispiele aus der Umweltbeobachtung, 2009) Klenke, Martin; Konstantinidis, Stefanie; Kruse, Fred
    The availability and accessibility of environmental information has become a key concern for public and private bodies within Europe in the recent years. The European Environmental Information Directive (EEID, 2003/4/EC), the Directive for establishing an Infrastructure for Spatial Information (INSPIRE, 2007/2/EC) as well as the newest initiatives of the EU like the Shared Environmental Information System (SEIS) and the Single Information Space for the Environment (SISE) emphasizes the European-wide need to improve the access to environmental information. Especially the web-based supply of the huge amount of spatial environmental data deserves particularly attention because high organisational efforts and financial expenses are necessary to improve the access to this kind of data. While the INSPIRE Directive and its Implementing Rules (IR) give the framework to establish a European spatial data infrastructure, vital obstacles in reference to harmonization and interoperability of data and services as well as in reference to the organisational structure are not removed yet. The project GS Soil, which was handed in as proposal in the eContentplus call 2008 in June 2008, aims to make a contribution to remove these obstacles by establishing a European web portal for soil information (GS Soil Portal). Within the project 34 partners from 17 European Member States are involved. Soil data are thereby provided for all 17 states mainly on national level and partly on regional level. InGrid, the technology of the German Environmental Information Portal PortalU®, will be used as technical base in the project. It will be used to build up a European GS Soil Portal, where all decentralized distributed soil information of the 18 states is bundled.
  • Konferenzbeitrag
    Building a Soil Information Portal for Europe based on the PortalU Technology
    (Environmental Informatics and Industrial Environmental Protection: Concepts, Methods and Tools, 2009) Feiden, Katharina; Klenke, Martin; Kruse, Fred; Konstantinidis, Stefanie
    The availability and accessibility of environmental information has become a key concern for public and private bodies within Europe in the recent years. The European Environmental Information Directive (EEID, 2003/4/EC), the Directive for establishing an Infrastructure for Spatial Information (INSPIRE, 2007/2/EC) as well as further initiatives of the EU like the Shared Environmental Information System (SEIS) emphasizes the European-wide need to improve the access to environmental information. Especially the web-based supply of the huge amount of spatial environmental data deserves particularly attention because high organisational efforts and financial expenses are necessary to improve the access to this kind of data. While INSPIRE and its Implementing Rules (IR) give the framework to establish a European spatial data infrastructure, vital obstacles in reference to harmonization and interoperability of data and services as well as in reference to the organisational structure are not removed yet. The project GS Soil “Assessment and strategic development of INSPIRE compliant Geodata-Services for European Soil Data” aims to make a contribution to remove these obstacles by establishing a European web portal for soil information (GS Soil Portal). Within the project 34 partners from 18 European member states are involved and the project is co-funded by the European Community programme eContentplus. The project duration is from June 2009 until May 2012. Overall it will focus on data organisation, data harmonisation as well as semantic and technical interoperability with the objective to produce seamless spatial information in terms of INSPIRE (European Union 2007). Both the description and harmonisation of European spatial soil data and the operation of a corresponding spatial data infrastructure will take centre stage. Out of the 34 partners, soil data are provided for all 18 involved European member states mainly on national level and partly on regional level. That means 67 % of the 27 European Member States will provide soil data for the project. These data build a sufficient base to analyse and improve the access to the different kinds of digital content. As technical base InGrid®, the technology of the German Environmental Information Portal PortalU®, will be used to build up the GS Soil Portal, where all decentralized distributed soil data are bundled. In the GS Soil Portal all soil related information from web pages, over data bases to data catalogues will be made available and accessible. Search results will be ranked and listed in shared result lists and spatial soil data from OGC compatible Web Mapping Services (WMS) and Web Feature Services (WFS) will be visualized in a map viewer.
  • Konferenzbeitrag
    Current state of the German Environmental Information Portal PortalU®
    (Environmental Informatics and Industrial Environmental Protection: Concepts, Methods and Tools, 2009) Konstantinidis, Stefanie; Kruse, Fred; Klenke, Martin
    The German environmental information portal PortalU® is now more than three years accessible via www.portalu.de for both citizens and environmental experts. This paper aims at drawing up an interim balance of the development from PortalU®. What was the starting point for PortalU®? What was the motivation to build up the portal? Which features offer PortalU® today? And which development perspectives arise for the technology from today’s point of view? Both important technical aspects as well as important organizational and content aspects will be thereby high lighted.
  • 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
    Einbindung von Kommunen in das Umweltportal Deutschland am Beispiel des Kommunalen PortalU® Niedersachsens
    (Environmental Informatics and Industrial Ecology, 2008) Kruse, Fred; Klenke, Martin; Uhrich, Stefanie; Giffei, Christiane; Peters, Sybille
    Das Umweltportal Deutschland PortalU® (www.portalu.de) ist bisher ein Portal für Umweltinformationen von Bund und Ländern. Mittelfristig soll es um kommunale Umweltinformationen erweitert werden. Eine direkte Einbindung der Informationsangebote der Kommunen sprengt den Rahmen der derzeitigen organisatorischen Struktur des Portals. Es werden zwei Ansätze dargestellt, wie die organisatorische Struktur erweitert werden kann, um eine Einbindung kommunaler Umweltinformationen zu gewährleisten.
  • Konferenzbeitrag
    Einführung von SOS-Diensten für den Austausch®und die Darstellung numerischer Daten in PortalU
    (Integratives Datenmanagement – Beispiele aus der Umweltbeobachtung, 2009) Heidmann, Carsten; Kazakos, Wassilios; Klenke, Martin; Kunz, Siegbert
    It was the aim of the project to define the possibilities for the usage of SOS services within the german environmental portal (PortalU®). The concept includes both the client side as the server side of the application. Including SOS services shall enable PortalU to access data from the german environmental administration and to provide a way to give access to a visualization across administrative and domain borders. The article reports on the initial requirements and the challenges occuring during the creation of the concept.
  • Konferenzbeitrag
    Flexible und modulare Systemarchitektur für InGrid 1.0 und Portal-U
    (Workshop des Arbeitskreises „Umweltdatenbanken“ der Fachgruppe „Informatik im Umweltschutz“, 2005) Vögele, Thomas; Kruse, Fred; Klenke, Martin
  • Konferenzbeitrag
    From Simple Dara Sources to a Complex Information System: Integrating Heterogeneous Data Models into an Information Infrastructure for the Puplic Administration
    (Integration of Environmental Information in Europe, 2010) Schenk, Franz; Kruse, Fred; Klenke, Martin
    Granting access to governmental data has become a matter of public interest since long. There are national and international regulations like the German environmental information act (UIG) or the European infrastructure for spatial information (INSPIRE). Both encourage governmental institutions to make information available to the public. Despite the fast-paced development in information technology many problems with data integration are far from being solved. The availability of distributed data demands for standardised procedures in service discovery and invocation, in data processing and integration. Although there are many efforts for a standardisation of web services and data exchange formats, on the level of the administrative institutions heterogeneous data structures and service interfaces are still the normal case. Hence, the complexity of granting access to environmental information in a uniform way with respect to the aforementioned regulations is very high. The German environmental information portal PortalU (www.portalu.de) is a publicly financed information infrastructure. It offers a single point of entry for all information with environmental relevance held by public authorities. Here, the key problem is not how to deliver the information or how to present the results of a query, but how to integrate the plethora of heterogeneous data sources. The aim is to allow for the integration of data in as many formats as possible and give access to all sources with a uniform query mechanism. The architecture of PortalU contributes to this situation with its flexible and extensible concept of specialised data source plug-ins. From the point of view of the query facility in PortalU, all information sources are treated uniformly as they all deliver their search results in the same way (the ranking of the results can be influenced, though). Data sources of very different structure can be connected, indexed and queried. The key component is the iBus, a communication broker that distributes queries to all connected data sources and collects, combines, and delivers the answers in return. One of the strong points in the architecture of PortalU is the wide range of data formats and the diversity of information systems that are supported.