Barely Significant

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9 K x = 1 2 π e - x 2 2 Center of gravity and standard deviation ellipse model Center of gravity model The center of gravity model is used to describe the direction and distance of the center of gravity movement of certain attribute values in the region, this model has been widely used in existing literature, for example, Gai and Zhan studied the movement path of the center of gravity of marine eco-efficiency in China's coastal provinces and found that the spatial distribution range of the center of gravity of the efficiency showed a trend of expanding and then shrinking 40 .
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In fact, certain nodes with relatively lower degrees can be more effective at controlling information spread, such as node 2594 identified by the mDC, which is not among the top 5 nodes identified by DC. From the above analysis, we can find that in the study of epidemic spreading, discovering effective immunization strategies to place nodes in an immune state in order to prevent the spread of diseases is a highly significant and meaningful research area.
The lack of articulated fossils, scarce due to the cartilaginous skeleton of Chondrichthyes, prevented the possibility of identifying a clear trend of evolution (unlike for lungfishes and amphibians, where the use of bone lacunae as an indirect estimate of fossil cell, and hence genome size, showed low values as the general ancestral condition 85 , 86 ).
This is due to the fact that the chain rule leads to gradient vanishing and overfitting problems, and its convergence speed will have a decreasing trend; whereas the IDAE adds direct paths between layers by incorporating techniques such as residual connectivity, which allows the signal to bypass the nonlinear transforms of some layers and propagate directly to the later layers.