Auflistung nach Autor:in "Briesen, Marcus"
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- KonferenzbeitragData Integration in the Field of Environmental Monitoring(Environmental Communication in the Information Society - Proceedings of the 16th Conference, 2002) Briesen, Marcus; Hofmann, Claus; Otterstätter, Arnd; Nikolai, Ralf; Mirtl, Michael; Schentz, Herbert; Vogel, WilhelmIn order to improve the quality of the environment national and international legislation increasingly asks for monitoring systems as an appropriate basis for decision making at all levels. The fundamental basis for all decisions is an integrated access to data from various programmes, databases, provinces, states etc. In this article we analyze the needs and requirements of data integration based on the examples of the water framework directive and integrated monitoring. Depending on the power of the local systems already in place we suggest two different ways of fulfilling these requirements: 1.) Providing a system that has a common user interface and various data connectors to access existing data in a uniform way. 2.) To establish a super database for (nearly) any kind of environmental data. A combination of both approaches would provide a tool kit which significantly decreases the effort for integration of existing and new data including uniform, polysemantic views and enabling substantial analysis and reporting.
- KonferenzbeitragData Warehouse for Water Management – Geographic Data and ETL Processes(The Information Society and Enlargement of the European Union, 2003) Lukács, Gergely; Otterstätter, Arnd; Hofmann, Claus; Briesen, Marcus; Vogt, Gunter; Lienau, Gerhild; Neumann, Hans; Schuchardt, Volker; Weber, DirkA data warehouse for water management has been set up in the German state of Lower Saxony, in order to support the implementation of the European Water Framework Directive and other state-wide, comprehensive water management tasks. The data warehouse covers a very wide range of relevant data sets, including geographic data. In this paper, the general architecture of the data warehouse is summarized. The handling of geographic data in the data warehouse, using the geographical functionality of the database management system Oracle 9i and the platform disy Cadenza, is described in detail. The extraction, transformation and loading (ETL) processes responsible for filling the data warehouse with data are also discussed. The major design criterion for all issues was the easy extensibility and adaptability of the system to changes in the requirements.
- KonferenzbeitragInformation System for Implementing the European Directive on Environmental Noise in Bavaria(Managing Environmental Knowledge, 2006) Briesen, Marcus; Lukacs, Gergely; Hofmann, Claus; Leibold-Strobl, Thomas; Brand, JürgenThe European directive relating to the assessment and management of environmental noise prescribes an integrative, comprehensive approach to assessing and reducing environmental noise and its harmful effects. In this paper, the Bavarian implementation of the directive is described. The Bavarian State Agency for Environment Protection is responsible for the implementation of the law. It is setting up a central database, integrating related source data and the result of acoustic calculations and numeric models. The contents, the technical solutions of the data management, the applications and the evaluation scenarios are presented.
- KonferenzbeitragIntegrated Analysis and Reporting of Environmental Data Through Cooperation and Technical Innovations – Despite Organisational Changes, Increasing Requirements and Decreasing Budgets(Informatics for Environmental Protection - Networking Environmental Information, 2005) Mayer-Föll, Roland; Keitel, Andree; Hofmann, Claus; Lukács , Gergely; Briesen, Marcus; Otterstätter, ArndAlmost all state and federal level environmental authorities in Germany cooperate by joining their financial resources and competences, making new dimensions of software solutions for environmental protection possible. The cooperation was initiated in 1994 by Baden-Württemberg, a German state with an outstanding environmental information system. disy Informationssysteme GmbH is, among other companies, working in the related umbrella projects. disy is a spin-off of the Universität Karlsruhe, one of the leading universities in computer science worldwide. The knowhow and the platform disy Cadenza for data integration, analysis and reporting is a result of the ideas and requirements developed by the customers – German environmental authorities with very high standards – and of a top R&D and technical competence in information systems, geographic information systems, decision support, databases, human- computer interaction and software technology. This paper gives an overview of the two issues: the organisational background of the cooperation and the innovative technical solutions at disy.
- KonferenzbeitragNOKIS++ Informationsinfrastrukturen für Nord- und Ostseeküste(Workshop des Arbeitskreises „Umweltdatenbanken“ der Fachgruppe „Informatik im Umweltschutz“, 2005) Kazakos, Wassilios; Briesen, Marcus; Lehfeldt, Rainer; Reimers, Hans-Christian
- KonferenzbeitragUsing ISO 19115 Metadata and WebServices to Facilitate Data Access, Visualization and Processing(Informatics for Environmental Protection - Networking Environmental Information, 2005) Kazakos, Wassilios; Briesen, Marcus; Lehfeldt, Rainer; Reimers, Hans-ChristianIt is nowadays commonly accepted that metadata and metadata systems are useful and necessary for organizational and inter-organizational networking, information flow and retrieval. ISO 19115 and its XML-representation ISO 19139 have become de facto standard for metadata descriptions in the environmental community. Many initiatives are formed to establish a wide network of metadata repositories. They collect metadata about geographic and nongeographic information or create broker architectures and systems to allow retrieval through distributed repositories. We want go one step further and describe how we use Metadata to access, to process and to visualize data. The means to achieve this are Web services. In this paper we describe the general idea of our service oriented architecture for environmental information handling and show the advantages and possibilities of our comprehensive approach to wrap and bridge isolated applications through services. Special focus is put on the basic principles of the architecture and the workflow to support the users. To exemplify our approach and to show that environmental information handling goes beyond OGC-conformance, we focus on integrated coastal zone management (ICZM). The scenarios used throughout this paper reflect the new challenges addressed in the NOKIS++ project.