This page shows the connectivity of water research between National Science Foundation (NSF) Specific Topics. The citation network below is based on the estimated degree of connectivity which is the probability that one topic (node) is cited by other topics. It is measured by directional citations between articles’ research topics for specific topics. The direction of the edges can be viewed by hovering over the edges that link one topic to another. The edge thickness represents the connectivity proportion, the node size represents research volume, and the node color corresponds to the NSF General Topic label. Please note that adjusting the connectivity using the drop-down menu rescales the edges, so the smaller edges may look larger in the network for legibility purposes.
To explore the degree of connectivity between NSF specific topics:
Click the drop-down menu to filter connections by citation volume range.
All connections shows all of the connections.
The strong connections button shows topics that have a maximum degree of connectivity ranging from 11% to 18%.
The medium connections button shows topics that have a medium degree of connectivity ranging from 6% to 10%.
The weak connections button shows topics that have a minimum degree of connectivity of less than 5%.
Hover over the name of the topics (nodes) to view info about what NSF General Topic it falls under, weighted in-degree, weighted out-degree, and the most- and least-cited topics.
Hover over the edges to show the connected topics,the edge direction, and their respective citation proportions. The weighted in-degree is the number of incoming topics and the weighted out-degree is the number of outgoing topics.
For a better view, zoom in or click and drag the nodes to move them around.
