Autor*innen mit den meisten Dokumenten
Auflistung nach:
Neueste Veröffentlichungen
- KonferenzbeitragWeb Usage Analysis for Assessing and Improving Metadata Quality(Managing Environmental Knowledge, 2006) Krieger, Rolf; Schöpflin-Reichmann, Elke; Sattler, Thomas; Schäfer, KerstinDue to Directive 2003/4/EC on public access to environmental information public authorities have invested large amounts of money and time in metadata management projects. For instance, in Germany the Environmental Data Catalogue was designed as a Web-based meta information system for retrieving environmental information held by public authorities. The benefits of the system depend on the quality of the metadata provided. As well-known data quality is expressed in several dimensions, e.g. accessibility, completeness, relevancy, timeliness etc.. To guarantee a high metadata quality public authorities have to develop a long-term metadata management strategy concerning the Environmental Data Catalogue. At a tactical level this requires a continuous monitoring of the usage of the Environmental Data Catalogue. One attractive strategy for analyzing the usage of the system is the analysis of log files provided by the Environmental Data Catalogue. But to our knowledge only a few German authorities, e.g. the State Institute for Environment, Measurement and Nature Conservation Baden Württemberg, have started to analyse the UDK-log files continuously in a systematic way. The reasons are: (a) The UDK-software only provides rudimentary support for managing the logging process. (b) It is difficult to analyse the log files because there are no metrics and no tool for analyzing the application-specific log files of the Environmental Data Catalogue. Due to these facts in our contribution we present procedures, metrics and a tool for analysing the specific UDK-log files. The UDK Log-File-Analyser receives the daily log files as input, aggregates and analyses the data and provides a summary report, a weekly report, an error report and a search term evaluation report as result. The reports list several metrics (e.g. number of sessions and object views, list of most popular UDK-objects, list of most popular search terms etc.). The statistics are presented in tabular and graphical form. Using our tool we analysed the daily log files of the Environmental Data Catalogue of the German State of Baden-Württemberg from October 1st, 2003 to October 31st, 2004. Thereby we identified several data quality problems with respect to content and accessibility. To solve these problems, we derived several activities from our empirical study. For instance based on the search term evaluation report produced by our tool the most popular keywords can be identified. Assigning these keywords to relevant UDK-objects improves the accessibility of the data. In addition our tool provides a list of search terms for which the Environmental Data Catalogue has not delivered relevant objects. This list can help identify missing objects. Adding these objects improves the completeness of data. In summary, with our tool and metrics public authorities have instruments for guiding their meta data management and for improving metadata quality concerning the Environmental Data Catalogue. Moreover, our results show that web usage analysis is a promising way to gain insights into the environmental information demand of the public.
- KonferenzbeitragNear Real-time Comparison of Air Quality Data Across European Cities and Regions(Managing Environmental Knowledge, 2006) van den Elshout, Sef; Leger, Karine; Heich, Hermann; Hodges, Nick; Nussion, Fabio
- KonferenzbeitragKnowledge Management Tools within the National Biological Information Infrastructure (NBII)(Managing Environmental Knowledge, 2006) Frame, Michael T.; Cotter, GladysSeveral Knowledge management tools have greatly enhanced the U.S. Geological Survey National Biological Information Infrastructure (http://www.nbii.gov) ability to deliver high quality scientific information to researchers, decision makers, and ultimately the general public. These include various cataloging, thesauri, collaboration, spatially oriented, and integrated portal tools. For instance, the use of thesauri in the retrieval of information has been in practice for the past several years. However, the use of these knowledge management systems as a framework in supporting Internet based retrieval of biological information is still relatively new. The NBII has benefited significantly from this approach in the areas of thesauri and portals through providing customized, tailored, and user driven access to information. Also, through the use of web-services, various weighting algorithms, pre defining search results, and integration with other international thesauri, biological users are able to discover information that was once not available via traditional query methods.
- KonferenzbeitragSVOD – Web Services Based Analytical Internet Tool on Cancer Epidemiology of Malignant Tumours in the Czech Republic(Managing Environmental Knowledge, 2006) Kubasek, Miroslav; Brabec, Petr; Dusek, Ladislav; Hrebicek, Jiri; Koptikova, Jana; Muzik, Jan; Vyzula, Roman; Zaloudik, JanThe new automated web portal SVOD is focused on population risk analyse related to cancer epidemiology. The portal is principally developed as a tool increasing the information potential of risk assessment studies. It is available at http://www.svod.cz.
- KonferenzbeitragSupporting the Modelling Life Cycle Through Knowledge Management(Managing Environmental Knowledge, 2006) Brito, Halison; Strauch, Julia; Souza, Jano
- KonferenzbeitragVulnerability Indicator as a Tool of Broadening the Sustainable Development Indicators of European Union(Managing Environmental Knowledge, 2006) Perga, Tatiana
- KonferenzbeitragIndicators for Water Information Systems(Managing Environmental Knowledge, 2006) Knoflacher, Helmut Markus; Gigler, UteThe basic role of indicator systems is the structured provision of information for decisions from observation and readings. The development of Indicator systems for the water management is an interdisciplinary task which contains technical, organizational and mental aspects. Despite the impulses of the European water framework directive for indicator harmonization, a need for an efficient design of the waters management and for methods for the integration of data of different qualities can be expected. By the combination of system analytical methods with operative methods of the database management as well as suitable organizational measures, in the long run the requirements of the European water framework directive can be fulfilled in the constraints of the existing financial and personnel framework conditions.
- KonferenzbeitragWorkshop „WaterINFO - Emerging Technologies and Novel Concepts for Water Information Management”(Managing Environmental Knowledge, 2006) N.N.
- KonferenzbeitragDSS Development for Complex Water Management Issues(Managing Environmental Knowledge, 2006) Kollarits, Stefan; Kuschnig, GerhardIntegrated water ressource management has to balance spring protection requirements with a variety of demands for land-use activities. This complex issue can be supported by Spatial Decision Support Systems (SDSS), which integrate data from various sources and help to make decision processes more effective and transparent. Successful application of a SDSS depends on its acceptability by stakeholders, which can be improved by integrating a broad range of practical experiences of stakeholders with formal knowledge of experts in a knowledge base. As example of SDSS implementation the trans-national Interreg project KATER will be presented, including the methodological approach and the SDSS in working examples. Main project objective was the development of a SDSS to handle the main tasks of water management: administration, crisis management and planning. The results of KATER project cover a wide range of land-use conflicts and different pre-conditions for decision making (national legislations, spatial dimension, data availability). As technological basis for SDSS development a GIS and database based approach was choosen and complemented with a knowledge base, defined as ontology, in order to support decision work-flows.
- KonferenzbeitragWATERMARK From Modules to Application(Managing Environmental Knowledge, 2006) Dünnebeil, erhard; Havlik, Dennis; Klingsreisen, Bernhard; Heiss, GerhardWATERMARK is a multi-disciplinary research initiative at the Austrian Research Centers which aims at developing intelligent knowledge-based services and solutions in order to support the implementation of the EU Water Framework Directive (WFD). One of the basic requirements for realizing the requested integrated water management approach is to develop advanced information and data management tools and applications. WATERMARK combines the research expertise of experts in water management, information technologies and environmental planning in order to develop innovative methodologies for comprehensive information management in the field of water resources management. Main objective of the WATERMARK project is to produce additional value out of the environmental data which will become available in the course of WFD implementation. This is done by integrating several data sources and modules into one coherent application. A couple of data sources easily available in house was chosen together with a handful of use cases. An architecture was defined, that allows to glue together all the data sources to one system allowing to work on the use cases. Some of these use cases were implemented together with all necessary access to the underlying data sources. Future development of WATERMARK is directed towards full ORCHESTRA (Open Architecture and Spatial Data Infrastructure for Risk Management) architecture compliance, integration of additional ORCHESTRA services, real-time access to sensor networks, and implementing further environmental management modules.