Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Predictive Factors of Kinematics in Traumatic Brain Injury from Head
  Impacts Based on Statistical Interpretation   Brain tissue deformation resulting from head impacts is primarily caused by
rotation and can lead to traumatic brain injury. To quantify brain injury risk
based on measurements of kinematics on the head, finite element (FE) models and
various brain injury criteria based on different factors of these kinematics
have been developed, but the contribution of different kinematic factors has
not been comprehensively analyzed across different types of head impacts in a
data-driven manner. To better design brain injury criteria, the predictive
power of rotational kinematics factors, which are different in 1) the
derivative order (angular velocity, angular acceleration, angular jerk), 2) the
direction and 3) the power (e.g., square-rooted, squared, cubic) of the angular
velocity, were analyzed based on different datasets including laboratory
impacts, American football, mixed martial arts (MMA), NHTSA automobile
crashworthiness tests and NASCAR crash events. Ordinary least squares
regressions were built from kinematics factors to the 95\% maximum principal
strain (MPS95), and we compared zero-order correlation coefficients, structure
coefficients, commonality analysis, and dominance analysis. The angular
acceleration, the magnitude, and the first power factors showed the highest
predictive power for the majority of impacts including laboratory impacts,
American football impacts, with few exceptions (angular velocity for MMA and
NASCAR impacts). The predictive power of rotational kinematics in three
directions (x: posterior-to-anterior, y: left-to-right, z:
superior-to-inferior) of kinematics varied with different sports and types of
head impacts.

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The categories of this paper are: quant-ph
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The categories of this paper are: q-fin
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The categories of this paper are: q-bio
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The categories of this paper are: nlin
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The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
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The categories of this paper are: adap-org
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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: math
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The categories of this paper are: astro-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-lat
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The categories of this paper are: alg-geom