• Authors' Area

author's area

December 15, 2020 to April 18, 2021

December 15, 2020 to April 18, 2021

Online Submission of Abstracts
By May 25, 2021

By May 25, 2021

Presenters' registration
May 1 to June 5, 2021

May 1 to June 5, 2021

Upload of 15-minute pre-recorded presentations.
June 10 to August 31, 2021

June 10 to August 31, 2021

Full papers submission in POMA

Download the conference timetable

Important information regarding the zoom sessions was sent to all chairpersons and corresponding authors.

If you are a chairperson or presenter and didn't receive this info please contact Yorgis Androulakis.


The abstract submission is closed.


To ensure the proper execution of UACE2021, please pay special attention to the instructions below. If you have any questions or difficulties following the guidelines, please contact Yorgis Androulakis

The conference will be delivered over a professional platform, Imagina, and will be managed by a highly competent and experienced technical team. The conference platform is rich with features such as interactive personalised programme, video streaming (live or on replay), personalised push notifications, one-on-one appointments, matching and networking through video calls.

All presentations have to be pre-recorded to improve the quality of the delivery, avoid running over time and avoid any technical issue. However, speakers should be virtually present for their entire session in order to answer questions and participate in the discussion.

The virtual conference will be similar to any in-person conference. Presentations are assembled in sessions (structured or regular) according to a topic and they are assigned a virtual room. A chairperson coordinates each session. All registered attendees can attend all sessions and switch from session to session at will.

Participants access the session of their choice by entering a virtual room via Imagina’s platform (web or mobile app).

As with in-person conferences, there will also be a dedicated period for questions and discussion after each presentation. Participants will be able to use the chat feature to ask questions during and right after the presentations. The session’s chairperson will then select a few questions, depending on the time allocated for the discussion, and will read them to the presenter, who will be able to answer verbally during the session. The presenter will also be able to discuss with attendees using the one-on-one appointment feature.

Unless otherwise requested by individual participants, all presentations will be fully recorded for post-conference streaming so that all registered attendees will be able to revisit the sessions and catch up on the talks they missed. This will allow participants in less convenient time zones or life situations to catch up with content. The presentation material will be made available for a limited period spanning the virtual event.

The time allocated for each presentation is 20 minutes (15’ pre-recorded presentation followed by 5’ for questions).

If you wish to allow attendees to contact you after the conference, make sure to include your name and e-mail address on the intro slide of your presentation.

Technical staff will be assigned to each virtual session to ensure smooth transitions between presentations. A session chair will also be assigned to each session to facilitate and oversee time and question period. The 5-minute question period will take place in livestream following your presentation and you will be able to answer questions.

Instructions for Video Recording

For a pre-recorded presentation, you will have to record yourself narrating a digital version of your presentation. Videos should contain a prominent view of the presentation slides along with audio of the spoken presentation. Optionally, videos may contain a shot of the speaker's head for increased engagement (This shot should be thumbnail-sized and overlaid on the slide images).

You can use software or application of your choice to prerecord your presentation.  Much presentation software allows recording audio and video directly in the application and can export appropriate video files. Please see the notes below for detailed instructions for PowerPoint, Keynote and popular meeting platforms.

PowerPoint (suggested)

    1. Follow these instructions to record a slide show with narration and slide timings
    2. Follow these instructions to export your presentation into a MPEG-4 video (.mp4)


    1. Follow these instructions to record a voiceover narration in Keynote on Mac
    2. Follow these instructions to export your presentation into a QuickTime video (.mov)

Alternatively, you can record your presentation by using any meeting software that you prefer and have access to, as long as you obtain a good quality recording and your final file is in the MP4 format. Here are some links to instructions for recording a meeting on various common platforms: Zoom, WebEx, Google Meet, Microsoft Teams.

Finally, there are effective and free options to record your screen (and microphone) while giving the presentation,
on Linux, macOS, Windows.

Tips for recording
  • Use a quiet place for recording.
  • Avoid areas that have echo or bad acoustics.
  • Use a good microphone close to mouth BUT away from direct line of mouth to reduce “pops”. Avoid, if possible, using default built-in microphone on computer.
  • Do a test recording of a couple of minutes and review the sound and picture quality, MP4 format, and bit rate before recording the entire presentation. Make adjustments if needed.
Recording Specifications
  • Duration: 15 minutes maximum (strictly)
  • File size limit: Try to keep it below 150Mb
  • File Format: MPEG-4 (.mp4) file (use the normal H.264 video and AAC audio codecs) or QuickTime video (.mov) format.
  • Resolution: 720p HD
  • Video Size: HD (1280 x 720)
  • Aspect Ratio: 16:9
  • Bit rate: Try to keep it less than or equal to 1 Mbps: to check the bit rate, right click on the file name, click on properties, go to the details tab, and look for total bit rate.
  • Audio Quality: please double check your files before submitting to make sure the audio is clear and audible!
Upload your presentations

In order for videos to be verified by the technical team, there is considerable urgency in preparing and uploading your video. After several requests, we extented the deadline for submission of pre-recorder presentations to June 5th, 2021.
Please note that this extension applies only to submission of the pre-recorded presentations. All presenters should register using the electronic registration form by May 25, 2021 so that their presentation is included in the Conference Programme and the Book of Abstracts.

Please note that an individual may be the presenting author for a maximum of two papers. The presenting author does not have to be the first author to appear on the abstract, but he/she has to register for the conference (like every other conference participant). There is no limit to the number of papers an individual author appears in as a non-presenting co-author.

Please use the following naming convention for your video file: PaperID-PresenterSurname e.g. 1527-Papadakis.mp4 or 1527-Papadakis.mov). Accepted formats are: .mp4 or .mov

If your a corresponding author, please follow the steps below:

  1. Sign-in in your account in UACE2021.
  2. Find your abstract under SUBMISIONS > MY SUBMISSIONS side-bar menu.
  3. Click on its title to access it.
  4. Click on EDIT
    1. Revise your submitted abstract, if necessary. Minor changes are allowed. (eg: correcting typos in abstract)
    2. Upload your prerecorded presentation in .mp4 or .mov format. Make sure you see a “successfully uploaded” message before you proceed to the next step.
    3. Assign a presenter.
    4. Press the SUBMIT button and wait until you see the “Saved” message.
Conference Proceedings

Full length UACE2021 papers will be published in POMA.

Submitting a full paper to the conference is not obligatory, however, authors are encouraged to submit their full papers to Proceedings of Meetings on Acoustics (POMA), an editor-reviewed, open-access, online journal published by the Acoustical Society of America (ASA). Because of rapid editorial processing, POMA offers a timely venue for viewing the most current work in the broad field of acoustics.

Accepted manuscripts that originated as papers presented in UACE2021, will be published online within a single volume tied to UACE2021 conference.
Authors can submit their full papers between June 10th and August 31st 2021 using the online submission system of POMA. Author information regarding eligible submissions, manuscript preparation and submission, can be found at https://asa.scitation.org/pma/authors/manuscript.

The submission window for corresponding papers to be submitted to POMA is now open! Please visit : https://www.editorialmanager.com/poma/ - Submit New Manuscript.

UACE database will feature direct links to the POMA volume related to UACE2021. In addition, UACE2021 papers will also show up in searches like Google Scholar, enchancing the visibility of UACE2021 papers to the wider underwater acoustics community.