Declarative modelling in ecological and environmental research
Robert Muetzelfeldt (2004)
European Commission: EUR 20918
This position paper was prepared for the Environment and Sustainable Development Programme (EU DG Research).  
Any comments welcome: please send to r.muetzelfeldt@ed.ac.uk.
Available in pdf (448KB, c.70 pages incl appendices)

Declarative modelling: A proposed 'integration methodology' for ecosystem modelling
Robert Muetzelfeldt, Oct 2002
Paper prepared for the 2002 Joint GAIM/WGCM Meeting, 9-11 Oct 2002, Victoria, Canada
Available in pdf (20KB, 3 pages)

Concept note on Declarative Modelling submitted to NERC's "Ideas Pinboard"
Robert Muetzelfeldt, 1st March 2006
This brief concept note (subject to a strict word limit) sets out the case for NERC (the UK's Natural Environment Research Council) to take the lead in promoting a declarative modelling approach in ecological and environmental research.
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A visual modelling environment for designing web services in the domain of scientific data processing and simulation
Robert Muetzelfeldt, Dec 2002
Speculative proposal for unifying the concepts of a declarative modelling environment and a workflow design environment for web services.
Available as html

Dynamic spatial modelling in the Simile visual modelling environment
Robert Muetzelfeldt and Matt Duckham, 2004
(to appear in 'Re-presenting GIS', Ed. Dave Unwin, 2005)
This paper explores Simile's ability to represent a range of rather different spatial configurations (grid squares, polygons, haxagons, etc).
Available as pdf (200KB, 20 pages)

Using Simile to make MODCOM components
Robert Muetzelfeldt, Dec 2002
Report on an exercise undertaken to demonstrate that the Simile visual modelling environment can be used to implement MODCOM components.
Available as html

Model transformation rules and model disaggregation
Robert Muetzelfeldt and Ruth Yanai, 1996
The Science of the Total Environment 183 (1996) 25-31
Discusses the use of model-transformation rules for automatically disaggregating a lumped model, or simplifying a complex one.
Avaliable as pdf (650KB, 7 pages)

COMET: Complexity Modelling Epistemics and Transformation
Robert Muetzelfeldt, Nov 2001
Unsuccessful proposal to the Leverhulme Trust under their 'Behaviour of very large complex systems' programme. Aimed to research into the transformation of complex to simple models.
Available as pdf (47 KB, 7 pages) and html

Computer-based support for model intercomparison studies in Earth Systems research: Concept Note
Robert Muetzelfeldt, January 2005
Model-intercomparison studies typically involve comparing the output of different models against the same set of data, and interpreting the results in terms of model strucure. This note outlines a possible method for automating this process, based on reasoning with declaratively-represented models.
Avaliable as pdf (300k, 7 pages)

On the declarative specification of models
Diomidis Spinellis, March 2003
Argues against the uncritical overuse of graphical drawing tools for modelling, in favour of text-based specifications.
Avalialble as pdf (3 pages) and html.

When description becomes program
Kurt Cagle, June 2003
On the use of XSLT to generate programs in conventional (imperative) programming languages from XML source documents. Warning: this is a pretty technical document.
Available as html