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Auflistung nach Autor:in "Ráček, Jaroslav"

1 - 5 von 5
  • Konferenzbeitrag
    Blended Learning: Concepts and Frameworks and Tools for Environmental Education
    (Informatics for Environmental Protection - Networking Environmental Information, 2005) Pitner, Tomáš; Ráček, Jaroslav
    Blended Learning (also known as Hybrid Learning) has currently attracted strong attention specifically at universities where pure e-learning is considered not to be the right solution to increase flexibility and effectiveness of teaching and learning by electronic means. However, Blended Learning because of its dynamic and open nature poses specific requirements on the supporting tools. Tools built on Service-oriented Architectures, if constructed properly, fulfill these requirements best. Based on Web Services, the CEWebS system is being developed at the University of Vienna, Faculty of Informatics. It can provide the students several non-standard services like support for on-line team building, peer-to-peer evaluation of students’ projects, and other collaborative tools. In the frame of the international cooperation with University of Vienna, the CEWebS framework has already been tested and will be deployed also at Masaryk University, Faculty of Informatics in Brno. It will help to unify the runtime environment for many services that are currently planned, such as several Natural Language Processing or Semantic Web tools, while preserving the freedom of choose of development platform because of web services interoperability.
  • Konferenzbeitrag
    Development of National Environmental Reporting System
    (Informatics for Environmental Protection - Networking Environmental Information, 2005) Hřebíček, Jiří; Pitner, Tomáš; Ráček, Jaroslav
    There are presented results of the research project of the Ministry of Environment of the Czech Republic “Analysis and Design of Environmental Data Models and External Czech Environmental Information System Interfaces Compatible with the EU”. The developed web information system Central Data Model is discussed. It enables to manage and monitor obligatory reporting activities of the Czech Republic. There was designed the global central data model for environmental information exchange and reporting purposes, to perform systematic attributing and thereby provide a basis for a central output data warehouse to meet reporting obligations.
  • Konferenzbeitrag
    Environmental Geoinformatics for Emergency Management
    (Proceedings of the European conference TOWARDS eENVIRONMENT, 2009) Ráček, Jaroslav; Ludík, Tomáš; Kubíček, Petr; Mulíčková, Eva; Šafr, Gustav
  • Konferenzbeitrag
    Measurement of Workflow System Development
    (Informatics for Environmental Protection - Networking Environmental Information, 2005) Fiala, Josef; Ministr, Jan; Ráček, Jaroslav; Sedláčková, Jana
    Papers deals with cost estimation of workflow system development. A measurement of source code lines (COCOMO – Constructive Cost Model), function oriented metrics (FPA – Function Point Analysis) or metrics based on measurement of individual process activities (ABC – Activity Based Costing) can be used for this purpose. If the workflow system is mail based or document based then should be used COCOMO or Function Point Analysis. In the case of process based system the cost of process analysis and cost of process definition development can be estimated by using principles of Activity Based Costing.
  • Konferenzbeitrag
    Object Oriented Model for Cluster Analysis in Environmental Risk Management
    (Informatics for Environmental Protection - Networking Environmental Information, 2005) Huňka, František; Ráček, Jaroslav
    This paper concerns the problem of object oriented modeling of cluster analysis and applying the model on environmental risk management. Cluster analysis is an exploratory method for classification objects and its usage is namely appropriate when little or nothing is known about an internal structure of examined data. Object oriented model enables to increase the possibilities of cluster analysis considerably. One of these possibilities facilitates interactive hierarchical clustering, which means adding new clusters to the current ones and continue with hierarchical clustering from the reached level of the hierarchical clustering. Actual state of clustering is stored and retrieved by using persistent store and persistent objects. Interactive hierarchical clustering and persistency of objects enable to create hypothetical classification structure of well proven data that is used for the new objects classification. Moreover objectoriented perspective enables modeling different hierarchical clustering methods with the benefit of exploiting virtual procedure mechanism. Described approach was tested on environmental data and the results can be used in environmental data risk management. The whole application is developed using the Mjolner BETA System and the BETA language for its rich facilities of the conceptual modeling.