Ulrich Streit's research while affiliated with University of Münster and other places

Publications (37)

Chapter
Daten GeodatenZeitreihendatenWerkzeuge Werkzeuge zur Bearbeitung von raumbezogenen Daten Gemeinsame GIS-Plattform des SchwerpunktprogrammsDer hydrologische GIS-Werkzeugkasten T4HIMDas hydrologische Visualisierungssystem HydroVISWerkzeuge für die Bearbeitung von ZeitreihenHydrologischer Modellgenerator Werkzeuge für die GesamtmodellierungSystematisi...
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Veranlassung und ProblemSkalenfrage des ProblemsZiel der RegionalisierungStand des Wissens über Lösungen des ProblemsLösungsweg und LösungsmethodeErgebnisse GIS-Werkzeuge unter T4HIMVisualisierung mit HydroVISÜbertragbarkeit und AllgemeingültigkeitOffene FragenLiteratur GIS-Werkzeuge unter T4HIMVisualisierung mit HydroVIS
Conference Paper
The paper should be available here: http://www.corp.at/archive/CORP2003_Streit.pdf
Chapter
Für die Vermittlung dreidimensionaler, raumbezogener Sachverhalte bietet sich der Einsatz von auf der Arbeitstisch-Metapher beruhenden VR-Umgebungen ("Workbench"-Umgebungen) an. Dieser Beitrag erläutert die Arbeitsweise der dazu notwendigen Hard- und Software und gibt Hinweise zur aktuellen Einsetzbarkeit dieser jungen Technologie zur Wissensvermit...
Article
Full-text available
Efforts to integrate Geographic Information Systems (GIS) and environmental simulation models often fail due to the structure of current GIS which do not meet the requirements of complex numerical simulation techniques. Therefore research in the field of environmental modeling focuses on adequate flexible simulation methods and powerful interoperab...
Article
Suitable tools are needed to explore high-dimensional data spaces and to gain insight into the underlying geoprocesses. Especially interactive, computer-generated representations enrich our perception, so that complex phenomena can be comprehended intuitively. Although several helpful visualization techniques are available today, there is a growing...
Conference Paper
Full-text available
Die Nutzbarkeit rechnergestützter Werkzeuge hängt wesentlich von der Qualität ihrer Benutzerschnittstelle und der Intuitivität der angebotenen Interaktionsmöglichkeiten ab. Für raumbezogene Aufgabenstellungen, in denen 3D-Daten zu verarbeiten sind, bietet sich der Einsatz von auf der Arbeitstisch-Metapher beruhenden VR-Umgebungen ("Workbench-Umgebu...
Conference Paper
Full-text available
Efforts to integrate Geographic Information Systems (GIS) and environmental simulation models often fail due to the structure of current GIS which do not meet the requirements of complex numerical simulation techniques. Therefore research in the field of environ-mental modeling focuses on adequate flexible simulation methods and powerful interopera...
Conference Paper
An approach towards the use of complex atmospheric models and GIS in an integrated and interoperable system is presented. The application workflow is analyzed and specifications for a GIS-framework that allows the integration of GIS and model components. The design of a prototypical object-oriented system will be presented.
Conference Paper
Full-text available
AtmoGIS should enable the integration of atmospheric models and GIS management, analysis and visualization functions. This paper will present a first prototype of an interoperable GIS framework. The prototype is implemented based on an object-oriented database kernel and a system for scientific visualization, both of which are capable of supporting...
Article
Full-text available
An approach to an interoperable object-oriented GIS-framework for atmospheric modeling (AtmoGIS), which can be used to implement integrated information systems, is presented. The consideration of user-workflows leads to the specification of the projected system. Using an object-oriented approach, the system is based on a spatio-temporal database ma...
Article
For the production of soil contamination and impact maps, the Institute of Geoinformatics is developing methods and software components to be integrated into the Soil Information System of North-Rhine Westfalia. These go away from the convential representation of point data and focus instead on the presentation of interpolated data. Interpolation o...
Article
The development of methods for the spatial transfer of hydrological data, parameters and models is the common objective of the priority programme "Regionalization in Hydrology" in Germany. Spatial scaling has been identified as the main problem of transferring hydrological information between spatial objects. The regionalization of hydrological inf...
Article
On the instructions of the Environmental Agency of the Land NRW (North Rhine Westphalia) the methodical and DP-specific fundamentals for the establishment of digital soil pollution maps. In digital soil pollution maps, the spreading of potential pollutants in the surface soil will be represented area-widely on a scale of 1:50 000. By means of the K...
Article
Full-text available
In the next decade, the realization of GIS-supported informa­ tion systems will be one of the most important tasks for disciplines concerned with spatial planning and environmental monitoring. These information systems will often be related to specific subjects; examples are Soil Information Systems or Freshwater Information Systems. The LIFE-proje...
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Geographic information systems (GIS) are computer-assisted systems for the acquisition, management, analysis, modelling and visualisation of spatial data. In recent years they have become an essential instrument for the geo- and environmental sciences. In this paper the different aspects of geometric, topologic and thematic modelling of spatial obj...
Conference Paper
Von entscheidender Bedeutung für die Aussagekraft umweltbezogener Planungen sind Umfang und Qualität der verfügbaren Informationen über den Planungsgegenstand. Der vorliegende Beitrag erläutert das Problem der Erhebung ökologischer Grundlagendaten für Fachinformationssysteme und stellt die Konzeption eines wissensbasierten GIS-Werkzeugs zur Diskuss...
Article
The terms "artificial intelligence' (AI), "knowledge-based systems' and "expert systems' reveal a new kind of information-processing which is increasingly gaining interest in the field of geography. The manifold application posibilities of AI technology stretch from computer guided assistance for the user (i.e. the use of AI for seeking solutions i...
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Full-text available
Geodateninfrastrukturen und Geoinformationsdienste: Aktueller Stand und Forschungsprob-leme. Publikationen der Deutschen Gesellschaft für Photogrammetrie und Fernerkundung (Band 11): 11-20 Dieser Beitrag untersucht die technischen und organisatorischen Aspekte derzeit im Auf-bau befindlicher Geodateninfrastrukturen (GDI). Standardisierte Geoinforma...
Article
Full-text available
As part of a Geodata Infrastructure an OpenGIS compliant catalog service was developed. This service enables the internet based search and access to geodata and geoservices. This paper describes the system architecture and the experiences made during the development, and gives an outlook towards future activities.
Article
Full-text available
Standards to reach an interoperable geoservice architecture (OpenGIS) and a framework for interoperable dynamic simulation (High Level Architecture) emerge to a more or less stable state. This offers the chance to integrate these initiatives to support dynamic spatio-temporal monitoring and simulation. This paper shows first steps towards an archit...

Citations

... Hence, integrated quality system (IQS) has drawn the attention of the practitioners and academics. The term "integrated" refers to the fact that all the elements if a system must work together for the system to function as a whole [2,3]. An integrated system represents how an organization is structured whereby each function is related to other functions either directly or indirectly towards forming a total system [2,3]. ...
... As part of OGC's specification program, the SWE working group develops standards to integrate sensors into the Geospatial Web for enabling a specialized subtype, the Sensor Web. Therefore, SWE has specified a number of standards defining formats for sensor data and metadata as well as service interfaces which enable the interoperable access to real and virtual sensor resources (simulation models are examples for virtual sensor resources [50]). The SWE 1.0 specifications have been approved as standards between 2006 and 2007. ...
... Zur Generierung und Vorverarbeitung dieser Daten bieten heutige GIS umfassende Funktionalität (Goodchild et al. 1993, Goodchild et al. 1996, Braun 1997, Helbig 1999. Die in GIS zur Verfügung stehenden Verfahren der Geostatistik dienen der Regionalisierung von Meßdaten (Gossmann et al. 1993, Rosner 1994, Streit 1995 ...
... such a coupling is not promising. The lack of an appropriate and adaptable programming interface in commercial GISs, and the limited or missing support for managing timevariant data makes a more efficient coupling of the simulation model and the GIS as well as the development of efficient GIS-based tools for analyzing the results of the model impossible ( [BeSt96], [BBD+97]). ...
... Der Stellenwert der Visualisierung ist dabei abhängig vom Anwendungszweck (Abbildung 3, aus Schmidt et al. 1999). Bei Entwurfsaufgaben steht die Umsetzung einer Idee (z. ...
... This "raw" data material has no value until it is processed into a useable form. Different selection criteria such as spatial or temporal queries, thematic selections, deletion of outliers, smoothing operators, level-of-detail filters etc. take place in the process of the extracting the "relevant" information [45]. The usage of maximum intervals to characterize the phenomenon reduces the readability of many weather maps. ...
... Object-oriented programs that are based on the class paradigm as RDF, however, could include such approaches. They would enable the software developer to include quality controls as well as description of quality constraints directly within the classes [4]. Further research should concentrate on such issues. ...
... Geoinformation technology standards developed by the OpenGIS Consortium (OGC) and the International Organization for Standardization (ISO) provide the basis for syntactic interoperability and cataloguing of geographic data and geographic information (GI) services. Spatial data infrastructures (SDIs) like GDI 1 -NRW (Kuhn et al. 2001; Bernard & Streit 2002) show what can be accomplished by this approach, but also raise challenging interoperability issues (Bernard et al. 2003). Although SDIs provide the basis for syntactic interoperability the usability of information that is created in one context is often of limited use in other contexts. ...
... Již v dřívějších studiích (Pundt [146]) bylo deklarováno, že využití mobilních GIS technologií v terénu přispívá k větší efektivitě práce a snížení jak časových, tak finančních nákladů, které je nutné na tyto aktivity vynaložit. Podpora mobilního sběru dat zahrnuje celou řadu potenciálních služeb a návazných činností, jako je například využití diagnostických nástrojů, automatická kontrola (validace) sbíraných dat či poskytování textových a vizuálních informací (Hitchcock et al. [38]; Pundt, Kuhn [148]). Vědecko-výzkumné aktivity v oblasti kartografické vizualizace měly významný vliv na oblast GIS obecně a pro mobilní oblast dokonce ve zvýšené míře. ...
... The integration of a GPS receiver into the pen computer configuration is vital for several purposes in field data acquisition (Streit et al., 1994). It provides support, not only to position water sampling points or sites where rare species, specific to the river habitat, were detected (e.g. ...