ARCH

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Related to arterial arch: pharyngeal arch arteries

ARCH

Autoregressive Conditional Heteroskedasticity

A statistical measure of the average error between a best fit line and actual data that uses past data to predict future performance. General Autoaggressive Conditional Heteroskedasticity is the most common way of doing this. See also: Fractal Distribution.
References in periodicals archive ?
Lateral impaction of the fragments, inappropriate operative incision and fracture immobilization with lateral splint (that may lead to aseptic necrosis of the fracture fragments) can result in lateral calcaneal artery injury [22, 23] Borrelli et al in a study of 24 cadavers published similar results and emphasized the importance of no touch technique and arterial arch preserving when operative incision were performed.
Deep Palmar Arch: This arterial arch provides a second channel connecting the radial and ulnar arteries in the palm, the first one being the superficial palmar arch.
But in such cases, the absorption occurs along the fourth arterial arch and the embryonic right aorta becomes the right subclavian artery.