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Submission instructions

Extended abstracts and full papers are to be submitted online through a system called Ex Ordo. Please note that submission of full papers is now closed and we are only accepting Extended abstracts.

Create an account

  1. On the right side of this page, click Log In / Create an Account.
  2. Fill in the New to Ex Ordo? form.
  3. Click on the button labelled Create Account.

Submit an extended abstract or full paper*

Before uploading a file, please check you have followed the instructions for authors and used the correct template.

  1. Login to Ex Ordo.
  2. Look for the Submit abstract card on your Dashboard or the My Submissions button in the menu across the top of the screen.
  3. Click New submission and follow through 6 steps.
  4. When all steps are complete click the Done (Save Submission) button.

Note you can edit your submission if you need to. Just go to My Submissions and click on any submission in the list to see options to Edit or Withdraw.

If you need help, please send an email to

*Note you are not required to submit any form of shortened abstract before you submit your full paper. Your only submission should be the full intended final version in the correct template.

At MODSIM2021, delegates will have a choice of presentation type – oral or poster. Each delegate can specify their preferred presentation type (oral or poster), but the final decision on presentation type (oral or poster) will be made by the organisers based on the quality of the submission and the need to keep the number of oral presentations to a manageable number. It is anticipated that each delegate will receive one oral presentation with additional presentations likely to be given as posters. The maximum number of oral presentations granted will be two per person. Please do not enter more than two submissions with the same author marked as presenting author.