Figure 1
A four-quadrant diagram classifying themes by density and centrality.The image shows a two-axis quadrant diagram divided by a vertical and a horizontal line intersecting at the center. The vertical axis is labeled “Density” at the top, and the horizontal axis is labeled “Centrality” on the right side of the horizontal line. In the top-left quadrant, the text reads “Highly developed and isolated themes”. In the top-right quadrant, the text reads “Motor themes”. In the bottom-left quadrant, the text reads “Emerging or declining themes”. In the bottom-right quadrant, the text reads “Basic and transversal themes”.

Strategic diagram

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