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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 ?
Fiber-reinforced polymer composites have been used as arch wires for more than a decade.
Spire Biomedical, a wholly-owned subsidiary of Spire Corporation (Nasdaq:SPIR) and a provider of surface treatment services for implantable medical devices, announced on Tuesday that the National Institutes of Health (NIH), National Institute of Dental and Craniofacial Research (NIDCR), has awarded Spire a nine-month Small Business Innovation Research (SBIR) Phase I Grant of USD114,173, to develop coatings for dental arch wires used in orthodontics.
Active interaction [12] is the term used for the system where the seating forces on round arch wire are continuous.
Orthodontists, or dentists who specialize in straightening teeth, often use stainless steel for the arch wire.
At the start of each test, a trial run was performed with no load on the power arm to check that bracket was not binding on the arch wire.
Patients were asked to complete a Visual Analog Scale (VAS) Questionnaire, at 24 hours after arch wire insertion, then at 24 hours, and 7th day.
Canales et al birth death technique in orthodontic brackets proved to be a bio mechanical stimulation for placement of continuous arch wires.
Fracture resistance of ceramic brackets during arch wire torsion.
amp; l) (pack of 10 each),stainless steel arch wire blanks- 0.
d) Provision by the arch wire of sufficient stiffness to resist deformation by the forces applied to it as the canine is extruded.
By adjusting the ceramic/polymer proportions, these wires can be manufactured in a wide range of clinically relevant levels of elastic stiffness, allowing practitioners to use variable-modulus orthodontic techniques without having to change arch wire materials as treatment progresses.
005"),calcium hydroxide + iodoform paste (premixed),stainless steel orthodontic arch wire straight length (0.