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communicate via portal using video, audio, and text. Thefollowing multimedia events are proposed: lecture –teacher is giving knowledge to students; round table – allactive participants are equal; moderated discussion –moderator is supervising the discussion.Not to limit the number of multimedia eventparticipants, only a part of speakers are showncontinuously but others speak one at a time when theyare entitled to. Those from the audience who want to takean active part in multimedia event should be equippedwith hardware and software means for audio/videostream creation and transmission. In all cases there maybe need to show documents. Sometimes it may be donein the same window showing the speaker, sometimes –for convenience/better quality/or some other reason – itmay be done in a special document panel showingpicture from a separate video stream. Technicalcoordinator who supports the event while it runs preparesall multimedia events.The presentation on this device (see the Figure 6)includes the following information levels andfunctionalities:• General information about e-learning scenarios(multimedia data); display of different types ofmaps;• Visualisation of objects on the map and their detailsincluding multimedia content, such as pictures,movies and sounds;• Display lists of objects with filter-capabilities;visualisation of the current GPS-position if availableand display objects within a user-defined distance.Data acquisition is realised by the followingfunctionalities:• Record tracks and points via GPS while being in thefield and linking of photos or voice notes recordedwith the PDA to those objects;• Keeping a digital, location aware, personal diary ofyour trip.MOBILE APPLICATIONSThe mobile applications are developed for a PDArunning “Microsoft Pocket PC 2003”, or higher, incombination with a GPS functionality (Almer et al.2003). This device fits well for the presentation of e-learning content and for the presentation of spatial data.Cartographic and object data can be added offline to thePDA or can be installed by downloading packages fromthe Internet. These packages can be configured online,giving the user the chance to define which maps, regionsand types of object data he wants to download,depending on his needs, bandwidth, and available storagespace on his PDA. The functionalities of the mobileapplications can be divided into the presentation- and thedata acquisition-part.CONCLUSIONSThis paper described the general objectives of theNNR project. These are the provision of a web portal forthe improvement of knowledge and the provision ofeducation concerning all aspects of SustainableDevelopment. The project will further develop anddemonstrate prototype technology and educationalprogrammes towards implementing the European Union'sStrategy for Sustainable Development.ACKNOWLEDGEMENTThe presented activity is supported by the 6 thFramework Program Specific Target Research ProjectSUSTDEV-2004-3.VIII.2.e 004074 NaturNet-Redime“New Education and Decision Support Model for ActiveBehaviour in Sustainable Development Based onInnovative Web Services and Qualitative Reasoning”.REFERENCESAlmer A., Schnabel T., Schardt M., Stelzl H. 2004. Real-Time Visualization of Geo-Information Focusing onTourism Applications. ISPRS WG V/6 - Visualizationand Animation. 18-20 November 2004, Pitsanulok,Thailand.Figure 6. PDA use for navigation and spatial datavisualisation.Almer A., Luley P., Nischelwitzer A. 2003. LocationBased Tourism Information Systems on MobileMultimedia Devices. GNSS2003 Global NavigationSatellite System – Graz, 22-25.04.2003.Annual Proceedings of Vidzeme University College “ICTE in Regional Development”, 200640