Sine Wave

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Sine Wave

Any curve plotted along an axis where the y-value moves above and below zero at a rate of y = sin(x). The Composite Index of Lagging Indicators is thought to be roughly a sine wave because interest rates and inflation, which make up the index, move in relation to each other in a way resembling the sine.
References in periodicals archive ?
1999) assumes that daily temperature follows a simple sine curve with minimum and maximum 12h apart (06:00 and 18:00, respectively).
A sine curve with a minimum and maximum adjusted to match the temperature and time of day of the actual minimum and maximum was a good fit to the actual data for the period from minimum temperature to maximum temperature, although the actual temperatures led the sine curve slightly during this period.
Therefore, the rise from minimum to maximum is symmetrical and can be modelled by a single sine curve rather than requiring a pair of curves, and so Eqns 3a and b can be combined to the single expression in Eqn 6.
Additionally, the 112 CMP assist visits and 69 LLTTs were major factors in maintaining a "steady strain on the line" and reducing the trough in the logistics readiness sine curve.
In signal measuring and manufacturing, a sine curve wave could be gotten with filtering methods.
Actually, any sine curve is corresponding to the intersection of a plane and a cylinder surface.
When the cylinder surface is folded up to a place, this ellipse become a sine curve [5].