This page shows the connectivity of water research between National Science Foundation General Topics. The citation network below is an estimation of the 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 general topics. The direction of each edge is represented by drawing it clockwise from an earlier node to a later node. The direction of the edges and the citation proportion can be viewed by hovering over the edges that link one topic to another. The edge thickness represents the connectivity proportion and the node size represents research volume. 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 general 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 45% to 60%.
The medium connections button shows topics that have a medium degree of connectivity ranging from 28% to 44%.
The weak connections button shows topics that have a minimum degree of connectivity of less than 27%.
Hover over the name of the topics (nodes) to view info about the weighted in-degree, weighted out-degree, and the most- and least-cited general topics.
Hover over the edges to show the connected topics, the edge direction, and their respective citation proportions. Self-citations are depicted as edges that start and end from the same country. 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.
