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Instructions

Below you will find more information about the Nexus Tools Platform to help you get started

The model review was based on the developer's model homepages, manuals, tutorials, and key literature, partly complemented or approved by the model developers. Please note that we cannot guarantee the correctness of the model specifications. Furthermore, the fact that a model is or is not included in the NTP does not mean that we endorse the model, or that a model may not be appropriate for a specific application.

The correctness and usefulness of this model comparison platform rely on feedback provided by users and developers of included modelling tools. Therefore, we welcome your comments, further information or recommendations to improve the information of the models reviewed.

If you would like any model to be added to the platform, please follow these instructions.

The current list of models you can download Icon List of models (April 2019) (19.9 KB) .

Search techniques

We use Kibana and Elasticsearch to store and visualize the data. All collected information of every model is classified according to Icon NTP models classification (April 2019) (436.5 KB)  and saved as a JSON file with fields listed in Icon NTP Fieldnames (2015) (792.6 KB) . Kibana allows you to search through this data in two possible ways:

1. By entering manually search requests according to the list of available Fieldnames and NTP model classification. Search syntax rules you can find here;

2. By clicking on the relevant fields of the respective graphs.

Those two techniques can be combined together or used separately. See the examples here.

Popularity index

Popularity index describes the demand of a model within the scientific community. There are four classes of popularity: 

1. Very high (Pr > 10);

2. High (Pr = 3-10);

3. Moderate (Pr =1-3);

4. Low (Pr = 0-1).

The index is calculated according to the next formula:

Pr formula.png

where Pr is the popularity index, nrecent is the number of publications published during the last 5 years, nall is the number of all-time published articles, nmax is set to 1,000. The factor 100 as a scaling factor was introduced in order to obtain reasonable Pr values between 0 and 100. The number of publications is obtained using the Web of Science database (WoS).

More information you can find in:

Mannschatz, T., T. Wolf, and S. Hülsmann. 2016. Nexus Tools Platform: Web-Based Comparison of Modelling Tools for Analysis of Water-Soil-Waste Nexus. Environmental Modelling & Software 76: 137–53. DOI: 10.1016/j.envsoft.2015.10.031