Auflistung nach Autor:in "Lukács, Gergely"
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- 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.
- KonferenzbeitragDecision Support for Consumers — Information Services for a More Sustainable World(The Information Society and Enlargement of the European Union, 2003) Lukács, GergelyA set of revolutionary new information services for consumer decision support are described in this paper. The paper argues for a new environmental law stating the right of consumers for information on how to make environmentally conscious consumer decisions. The two issues are closely related: the new information services cannot be developed properly and will not find widespread use without relevant (preferably European) legislation, and new laws cannot be implemented without highly sophisticated new information services. The emphasis in this paper is on the consumer’s view of the information services and on general issues such as the proposed legal and organisational background. Nevertheless, the technical solutions worked out in a PhD thesis at the University of Karlsruhe are also summarized.
- KonferenzbeitragICT Applications as a Key Element in Sustainable Consumption in Europe(Environmental Informatics and Industrial Environmental Protection: Concepts, Methods and Tools, 2009) Lukács, GergelyThis paper argues that information systems have a great potential in supporting sustainable consumption. It describes a number of scenarios where, due to insufficient information, citizens have difficulty finding sustainable consumption alternatives. It then gives an overview of information systems, prototypes and production systems supporting sustainable consumption, concerning all major areas such as mobility, food & drinks, housing and general consumption. It lists the advantages of providing information electronically as opposed to traditional media. In addition, the paper argues that comprehensive European legislation is required, stating the right of consumers for information on how to make environmentally friendly consumer decisions. The implementation of such legislation would be ambitious but viable through the use of appropriate, innovative information systems.
- KonferenzbeitragIntegrierte Umweltdatenbanken: Geodatenhaltung, Architekturalternativen, Inhaltliche und technische Aspekte der Modellierung(Workshop des Arbeitskreises „Umweltdatenbanken / Umweltinformationssysteme“ der Fachgruppe „Informatik im Umweltschutz“, 2008) Lukács, Gergely; Kazakos, Wassilios; Kumer, DominikAbstract For many tasks regarding environmental protection the observation of rather complex situations is characteristic. As support for these tasks integrated environmental information systems are necessary. This paper gives an overview over some approaches which allow the development of either integrated environmental data bases or ones that can be extended and integrated at a later date. Firstly, the basic approach for integrated environmental databases is presented – the data warehouse (DW) with integrated management of geographical data – as well as alternatives: DWs with integrated application for data collection, with external management of geographical data, and with specific applications for mass data such as measured values. Secondly, some aspects of data modelling with respect to content and techniques are pointed out; in detail these are units, chemical substances, biological taxonomy, (aggregated) measured values, conventions for database schemata, object type catalogues and version management.