Christian Neuwirth

 

 


 
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Phone: +43 - (0)662 - 8044 - 7556
Fax: +43 - (0)662 - 8044 - 7588
 

Scientific profile

Christian Neuwirth is dedicated to the DK-project “Integration of spatial structure in System Dynamics simulations”, which belongs to the research cluster Time and Process.

He obtained his bachelor’s degree in Geography (2007) and his master’s degree in Applied Geoinformatics (2010) from the University of Salzburg. Between October 2009 and October 2011 he worked as a project collaborator at the Research Studio iSpace, where he was involved in the research projects CLISP (Climate Change Adaptation by Spatial Planning in the Alpine Space) and REBLAUS (Crossborder risk and natural hazard management based on regional lightning analyses).

As a consequence of his work experience he has gained a solid background in GIS and process modeling, with a preference of environmental disciplines. Moreover, due to the activities in the previously mentioned research projects, the application of risk management concepts plays a key role in his occupational history.

Research Proposal

System Dynamics evolved as a mathematical approach for modeling non-spatial systems. Although there have been recent developments in expanding SD to include systems’ spatial dependencies, the co-evolution of spatial structure and feedback between dynamic space structures and processes was neglected. Therefore, spatial System Dynamics (SSD) applications exhibit limitations when it comes to the simulation of processes changing space itself.   

This PhD is aiming at a further development of SSD with the ultimate objective of defining structural change models as part of a theory of spatial system dynamics. The development of a technical solution, evaluation of process-structure feedback and the proposal of a set of methods for quantifying spatial structures are at the core of this research.

A middleware program is proposed to tightly couple SD software to a Geographic Information System (GIS). The approach provides the required capacities for handling bidirectional and synchronized interactions of operations between SD and GIS (see figure 1).

Fig 1.: Schematic representation of synchronized operations between SD and GIS

The middleware program is used to implement three case studies. In order to illustrate the concept and techniques proposed for simulating structural changes, a fictitious environment called Daisyworld is recreated in SSD. Furthermore, a simple model on surface runoff, erosion and landform evolution and a model on structural change in agriculture are implemented by means of the middleware program.

Main Supervisor: Josef Strobl

Other Supervisor: Barbara Hofer, Markus Biberacher, Andreas Schaumberger

Research Cluster: Time and Process

PhD Thesis Topic: Integration of spatial structure in System Dynamics simulations

Recent Publications

 

Modellierung geschieberelevanter Flächen mittels digitaler Reliefanalyse Neuwirth, C. (2011). Modellierung geschieberelevanter Flächen mittels digitaler Reliefanalyse. In: Donaubauer, A & Koch, A. (Eds), Innovations in Geoinformatics. Förderpreis des Runden Tisch GIS e.V. Ausgewählte Nachwuchsbeiträge. Heidelberg: ABC.

GIS analysis of Austrian-Bavarian cloud-to-ground lightning data Prinz, T., Spitzer, W., Neuwirth, C., Schulz, G., Diendorfer, G., Keul, A. (2011): GIS analysis of Austrian-Bavarian cloud-to-ground lightning data. Paper presented at the 6th European Conference on Severe Storms, Palma de Mallorca

Lightning density distribution and hazard in an alpine region Neuwirth, C., Spitzer, W. & Prinz, T. (2012). Lightning density distribution and hazard in an alpine region. Journal of Lightning Research, 4, 155-161.

A conceptual spatial system dynamics (SSD) model for structural changes in grassland farming Neuwirth, C., & Peck, A. (2013). A conceptual spatial system dynamics (SSD) model for structural changes in grassland farming. Paper presented at the 20th International Congress on Modelling and Simulation, Adelaide.

Spatial sensitivity of grassland yields to weather variations in Austria and its implications for the future Neuwirth, C., & Hofer, B. (2013). Spatial sensitivity of grassland yields to weather variations in Austria and its implications for the future. Applied Geography, 45(0), 332-341

A proposal for mapping historic irrigation channels to reveal insights into agro-climatic systems - A case study in Upper Austria. Neuwirth, C., d'Oleire-Oltmanns, S. & Eisank, C. . (2013). A proposal for mapping historic irrigation channels to reveal insights into agro-climatic systems - A case study in Upper Austria. In T. Jekel, Car, A., Strobl, J. & Griesebner, G. (Eds), GI_Forum 2013 - Creating the GISociety (pp. 216-223). Salzburg, Austria: Berlin: Wichmann.

Visualizing systems: A graphical approach for simulating mountain torrent dynamics. Neuwirth, C., & Castellazzi, B. (2013). Visualizing systems: A graphical approach for simulating mountain torrent dynamics. Paper presented at the 6th International Perspective on Water Resources and the Environment, Izmir.