Combination categories for multiple injuries are provided for use when there is insufficient detail as to the nature of the individual conditions, or for primary tabulation purposes when it is more convenient to record a single code; otherwise, the component injuries should be coded separately.
Oscillating is the process of swinging or moving to and fro in a steady, uninterrupted manner, and oscillating motion is the movement created by the process. An oscillating motion typically refers to a single step of the process in one direction then again as it swings to and from the opposite direction.
The phase oscillator. A phase oscillator is an oscillator model where we view the state of the system as going around the simplest loop, a unit circle. In a phase oscillator model, the state variable $\theta$ is called the phase of the oscillator. The state space in which the phase $\theta$ lives is the interval $[0, 2\pi]$.