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Ongoing Drupal Updates Fiasco

When I moved the site to Linode, I cloned the existing Drupal version which was 6.36. Once it was working I updated it to 6.37, which was described as the final release of v6, and which it was necessary to upgrade to before taking the leap to v7 or v8.

Systo - a lightweight approach for browser-based modelling

Systo is a novel approach for supporting dynamic systems modelling in web pages.

User defined functions: user defined macros: Enviromental functions

Over the years I have been building a library of environmental functions (in the form of a text file usable by Simile ( This library is useful, in the main, in plant ecophysiology. To use this file save it without the .txt at the end of the name in you user functions directory ("My Documents\My Simile Files\Functions" on Windows).

Optimizing model output using the R project Simile package

Based on the Optimizing model output example using SimileScripting and the Tcllib optimization package math::optimize this post is about reimplmenting the same problem using the R project Simile model package.


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Attempting to set up login by reference to social networing sites

 I am at present attempting to configure the web site to accept login (and registration) via various social networking sites to save users form having yet another set of login  credentials for this site. 

So currently glyphs prompting login via Google Facebook etc may well appaear but not work until I have the configuration correct.

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Model catalogue (repository ) revamp

A security update of the website software (Drupal) has left our ad-hoc model catalogue code broken. (The code originates from before our use of Drupal to manage the rest of the site.)

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ModelMaker to Simile conversion basic elements

I have been working on converting ModelMaker (  version 4 models (*.mod) to Simile version 5.9.

ModelMaker compartments, variables, defines and parameters now seem to be handled. Events and tables are not yet handled.

New publications page

We are asked from time to time for a list of Simile related publications and so have added a publications page. This isn't comprehensive yet but is released now to get the ball rolling.

All registered users can add items to the list, so if you have a relevant publication or know of one we've missed please add an entry!


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Attaching files to posts

Using the File attachments section below this Body text box.

Scroll down the edit page to the File attachments section, use the Attach new file: browse button to select the file to upload the file and click the attach button.

System Dynamics modelling in the Modelica modelling language

I've been looking at a number of other modelling languages, primarily to see how models are represented in the language.   One of these is Modelica, which is mainly aimed at the development of engineering-related models. A number of modelling environments, such as Dymola, are fully Modelica-compliant. 

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