.. _audience:

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Target audience
*****************

The GAINS model is targeting two main user categories at various degree of intensities:

    - **Experts** (e.g. from ministries):  This largest target audience concerns experts willing to use scientific information related to high-level air quality assessment. 
    - **(Academic) researchers**: This second target audience is using GAINS for its own research purposes, to e.g. enhance its own mitigation scenarios or directly collect data.


Prerequisites
==============

GAINS is an online model directly accessible through a `web interface`_. Hence, no other hardware/software requirements than having one of the latest browsers (e.g. Google Chrome, Mozilla Firefox, Opera, Microsoft Edge) installed on one's personal laptop/desktop computer is required for using it. 

For the more advanced users willing to benefit from the various functionalities of GAINS' :ref:`extensions`, the following prerequisites are relevant: 

    - :ref:`pygains`: Basic data post-processing skills in Python language;
    - :ref:`optimization`: Knowledge of the GAMS language and of mathematical optimization.

.. _`web interface`: http://gains.iiasa.ac.at/models/gains_models4.html

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